Titre :	Effet des extraits de la plante médicinale Ruta montana) (الفيجلsur la cardiotoxicité induite par la doxorubicine et sur la multi-drug résistances (MDR) des cellules cancéreuses ovarien (A2780)
Type de document :	texte imprimé
Auteurs :	Wahiba Kara Ali, Auteur ; N. Abidli, Directeur de thèse
Editeur :	جامعة الإخوة منتوري قسنطينة
Année de publication :	2017
Importance :	160 f.
Format :	30 cm.
Note générale :	2 copies imprimées disponibles
Langues :	Français (fre)
Tags :	Ruta montana  Doxorubicine  Cardiotoxicité  Multi-drug résistance  Stress oxydant  Antioxydant  Flavonoides  Cardiotoxicity  Multidrug resistance  Oxidative stress  Antioxidant  Flavonoids  الدوكسوروبسين  السمية القلبية  المقاومة المتعددة للأدوية  الإجهاد التاكسدي  النشاط المضاد للأكسدة  الفلافونويدات
Index. décimale :	570 Sciences de la vie. Biologie
Résumé :	This study was conducted to search for the preventive effect of medicinal plant Ruta montana extract on oxidative stress induced by doxorubicine (DOX) and its properties to reverse doxorubicin resistance in ovarian cancer cell line (A2780). Organic extracts were obtained by maceration with three solvents: petroleum ether, ethyl acetate and butanol. The yields were: 15,04%, 3,55% and 25,14%.respectively. A phytochemical screening in methanol extract revealed that the plant contain the flavonoids, saponins, tannins, coumarins, reducing component and the alkaloids. The quantitative study showed that the butanolic extract (BERM) has significant amount of flavonoids (80.85±0.78mg EQ / g dry extract), followed by ethyl acetate extract (AEERM) (15.27 ±0.62 EQ / g dry extract) and petroleum ether extract has the lowest flavonoids content (PEERM) (9.71±1.13 mgEQ/g dry extract). When the total phenolic contents was: 687.5, 595.83 and 146.33 mg EGA / g dry extract, in the BERM, AEERM and PEERM respectively. The qualitative analysis of the three methanolic crude extract via thin layer chromatography (TLC) has shown the presence of the anthocyanidin 3-glycosids, flavons et flavonols glycosids (hétérosids), flavonols avec 3-OH libre, flavonons ou aurons, isoflavons, the phénolic acids, Flavonols et 4-OH chalcons. The évaluation of antioxidant activity by the reduction of free radical DPPH method showed that The highest DPPH radical scavenging activity was observed with AEERM (IC50 = 0.126 ± 0.002 mg/ ml), followed by BERM (0.135 ± 0.0006 mg/ ml) and PEERM (IC50 =0.185± 0.002 mg/ ml). The study of preventive effect of AEERM on oxidative stress induced by DOX in wistar rats clearly show that DOX (15 mg/kg i.p) induced animal cardiotoxicity characterized by an increase of cardiac enzyme activity (CKMB, LDH, l’ALAT et l’ASAT) in serum, the increase in the concentration of malondialdéhyde (MDA), antioxydant enzyme activity, catalase (CAT) and Glutathion- Stransférase (GST) and a decrease of cardiac cytosolic reduced glutathione (GSH) with a different pathological changes in the heart. However pretreated animals with EAERM (100 mg/kg orally during 15 days), showed a decrease of cardiac enzymes activities 24 %, 35, 69%, 21,25 % et 8,10 % respectively to CKMB, LDH, l’ALAT and l’ASAT. The preatretment with the extract improved antioxidant status in the heart by a decrease in the cardiac MDA concentration by 29,7 % and activity of antioxydants enzymes by 17,91% et 29,78% respectively to CAT et la GST. In addition, the pretreated rats by the extract showed an increase of GSH level (83,76 %) compared with DOX-treated animals. Histological study shows that the extract resulted in a reduction of severe cardiac damages observed in DOX-treated animals. The reversal of multidrug resistance for DOX in human ovarian adenocarcinoma, cell lines (A2780 DX3) using MTT assay showed that AEERM was very effective at reversing the resistant in dose dependent manner with the Reversion Factor (RF =8.62, 05.77 and 02.30 respectively for the concentrations 40, 10 and 2.5 mg/ml) followed by BERM (FR=05.07 and 02.43 for the concentrations 40 and 10 mg/ml respectively), then the PEERM had the lowest reversal resistance effect (RF betwen 1.01 to 1.08). The present study suggests that AEERM can ameliorate the oxidative stress involved in the pathogenesis of doxorubicine- induced cardiotoxicity and can reverse the multidrug resistance for DOX.
Diplôme :	Doctorat en sciences
En ligne :	../theses/biologie/KAR7158.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10435

Effet des extraits de la plante médicinale Ruta montana) (الفيجلsur la cardiotoxicité induite par la doxorubicine et sur la multi-drug résistances (MDR) des cellules cancéreuses ovarien (A2780) [texte imprimé] / Wahiba Kara Ali, Auteur ; N. Abidli, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2017 . - 160 f. ; 30 cm.
2 copies imprimées disponibles

Langues : Français (fre)

Tags :	Ruta montana  Doxorubicine  Cardiotoxicité  Multi-drug résistance  Stress oxydant  Antioxydant  Flavonoides  Cardiotoxicity  Multidrug resistance  Oxidative stress  Antioxidant  Flavonoids  الدوكسوروبسين  السمية القلبية  المقاومة المتعددة للأدوية  الإجهاد التاكسدي  النشاط المضاد للأكسدة  الفلافونويدات
Index. décimale :	570 Sciences de la vie. Biologie
Résumé :	This study was conducted to search for the preventive effect of medicinal plant Ruta montana extract on oxidative stress induced by doxorubicine (DOX) and its properties to reverse doxorubicin resistance in ovarian cancer cell line (A2780). Organic extracts were obtained by maceration with three solvents: petroleum ether, ethyl acetate and butanol. The yields were: 15,04%, 3,55% and 25,14%.respectively. A phytochemical screening in methanol extract revealed that the plant contain the flavonoids, saponins, tannins, coumarins, reducing component and the alkaloids. The quantitative study showed that the butanolic extract (BERM) has significant amount of flavonoids (80.85±0.78mg EQ / g dry extract), followed by ethyl acetate extract (AEERM) (15.27 ±0.62 EQ / g dry extract) and petroleum ether extract has the lowest flavonoids content (PEERM) (9.71±1.13 mgEQ/g dry extract). When the total phenolic contents was: 687.5, 595.83 and 146.33 mg EGA / g dry extract, in the BERM, AEERM and PEERM respectively. The qualitative analysis of the three methanolic crude extract via thin layer chromatography (TLC) has shown the presence of the anthocyanidin 3-glycosids, flavons et flavonols glycosids (hétérosids), flavonols avec 3-OH libre, flavonons ou aurons, isoflavons, the phénolic acids, Flavonols et 4-OH chalcons. The évaluation of antioxidant activity by the reduction of free radical DPPH method showed that The highest DPPH radical scavenging activity was observed with AEERM (IC50 = 0.126 ± 0.002 mg/ ml), followed by BERM (0.135 ± 0.0006 mg/ ml) and PEERM (IC50 =0.185± 0.002 mg/ ml). The study of preventive effect of AEERM on oxidative stress induced by DOX in wistar rats clearly show that DOX (15 mg/kg i.p) induced animal cardiotoxicity characterized by an increase of cardiac enzyme activity (CKMB, LDH, l’ALAT et l’ASAT) in serum, the increase in the concentration of malondialdéhyde (MDA), antioxydant enzyme activity, catalase (CAT) and Glutathion- Stransférase (GST) and a decrease of cardiac cytosolic reduced glutathione (GSH) with a different pathological changes in the heart. However pretreated animals with EAERM (100 mg/kg orally during 15 days), showed a decrease of cardiac enzymes activities 24 %, 35, 69%, 21,25 % et 8,10 % respectively to CKMB, LDH, l’ALAT and l’ASAT. The preatretment with the extract improved antioxidant status in the heart by a decrease in the cardiac MDA concentration by 29,7 % and activity of antioxydants enzymes by 17,91% et 29,78% respectively to CAT et la GST. In addition, the pretreated rats by the extract showed an increase of GSH level (83,76 %) compared with DOX-treated animals. Histological study shows that the extract resulted in a reduction of severe cardiac damages observed in DOX-treated animals. The reversal of multidrug resistance for DOX in human ovarian adenocarcinoma, cell lines (A2780 DX3) using MTT assay showed that AEERM was very effective at reversing the resistant in dose dependent manner with the Reversion Factor (RF =8.62, 05.77 and 02.30 respectively for the concentrations 40, 10 and 2.5 mg/ml) followed by BERM (FR=05.07 and 02.43 for the concentrations 40 and 10 mg/ml respectively), then the PEERM had the lowest reversal resistance effect (RF betwen 1.01 to 1.08). The present study suggests that AEERM can ameliorate the oxidative stress involved in the pathogenesis of doxorubicine- induced cardiotoxicity and can reverse the multidrug resistance for DOX.
Diplôme :	Doctorat en sciences
En ligne :	../theses/biologie/KAR7158.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10435

Titre :	Etudes comparatives des souches d'escherichia coli aviares et humaines
Type de document :	texte imprimé
Auteurs :	Nawel Lezzar, Auteur ; Dalila Satta, Directeur de thèse ; Charaf Chebbah, Directeur de thèse
Editeur :	جامعة الإخوة منتوري قسنطينة
Année de publication :	2017
Importance :	311 f.
Format :	30 cm.
Note générale :	2 copies imprimées disponibles
Langues :	Français (fre)
Tags :	Escherichia coli  Souches d’E. coli Aviaires  Souches d’E. coli Humaines  Antibiorésistance  Prévention  "ميكروب الآي كولاي القولونية  سلالات القولونية من الطيور  سلالات القولونية من الإنسان  مقاومة المضادات الحيوية  الوقاية
Index. décimale :	636 Sciences Vétérinaires
Résumé :	Escherichia coli infections or colibacillosis continue to be always a major cause of economic losses for poultry farms. Apart from the pathogens of Escherichia coli that are responsible for it, it is important to do shed light on the strains Escherichia coli saprophytes antibiotic-resistant wich are responsible for therapeutic failures and wich are representing the main source of the spread of this antibiotic resistance, through resistant genes, thus ensuring their transmission to other saprophytic agents and pathogenic in humans as well as in poultry (in particular) and animals (in general). In this study, we show the emergence of a multiresistance through the resistance profile of two collections of E. coli poultry Experimental (ELEX1 and ELEX2) to the 6 Quinolones tested (Flumequine (UB), Pefloxacin (PEF), Norfloxacin (NOR), Enrofloxacin (EN), Ciprofloxacin (CIP), and experimental avian influenza vaccines (ELEX1 and ELEX2), as well as a multiresistance through the resistance profile of two collections of E. coli Poultry and Humain to the 40 antibiotics tested (Ampicillin (AMX), Piperacillin (PRL), Ticarcillin (TC), Amoxicillin / Clavulanic Acid (AMC), Cefalexin (CN30), Cefazoline (CZ), Cefalotine (CF) Cefepaxime (CTX), Cefotaxime (CRT), Cefitaxone (FOX), Ceftazidime (CAZ), Cefixime (CFM), Aztreonam ), Gentamycin (CN10), Tobramycin (TOB), Amikacin (AK), Kanamycin (K), Netilmicin (NET), Streptomycin (S), Tetracycline (TE), Doxyciline (DXT), Nalidixic Acid NA), Flumequine (UB), Pefloxacin (PEF), Norfloxacin (NOR), Ofloxacin (OFX), Ciprofloxacin (CIP), Sulfonamides (SSS), Trimethoprim (TMP), Trimethoprim / Sulfamethoxazole Chloramphenicol (C), Fosfomycin (FF), Nitofurantoines (F)). Out of a total of 2635 samples, of which 264 were taken from the two experimental poultry farms (108 for ELEX1 and 156 for ELEX2), 600 collected from the 12 broiler farms (from the 06 communes of the wilaya of Constantine) and 1771 collected from patients of CHU of Constantine (hospital and ambulatory), we obtained 291 of antibiotic-resistant E. Coli strains, including 46 antibiotic-resistant E. Coli strains to the 06 quinolones (for the two collections of E. coli Experimental), 120/209 of E. coli strains (for E. coli aviary strains) and 125 of E. coli strains (for E. coli Human strains) to the 40 antibiotics tested. From the different resistance profiles obtained, the emergence of several resistance profiles follow a selection pressure for antibiotics by misuse of the latter in veterinary medicine and in human medicine (upstream) but also to the dissemination of resistance genes by failure to respect hygienic measures (downstream) and which remain the business of all.Therefore antibiotic resistance monitoring is required at all levels and at all times by the systematic application of ""broad-spectrum antibiogram » on commensal and pathogenic bacterial populations.
Diplôme :	Doctorat en sciences
En ligne :	../theses/veterinaire/LEZ7153.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10434

Etudes comparatives des souches d'escherichia coli aviares et humaines [texte imprimé] / Nawel Lezzar, Auteur ; Dalila Satta, Directeur de thèse ; Charaf Chebbah, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2017 . - 311 f. ; 30 cm.
2 copies imprimées disponibles

Langues : Français (fre)

Tags :	Escherichia coli  Souches d’E. coli Aviaires  Souches d’E. coli Humaines  Antibiorésistance  Prévention  "ميكروب الآي كولاي القولونية  سلالات القولونية من الطيور  سلالات القولونية من الإنسان  مقاومة المضادات الحيوية  الوقاية
Index. décimale :	636 Sciences Vétérinaires
Résumé :	Escherichia coli infections or colibacillosis continue to be always a major cause of economic losses for poultry farms. Apart from the pathogens of Escherichia coli that are responsible for it, it is important to do shed light on the strains Escherichia coli saprophytes antibiotic-resistant wich are responsible for therapeutic failures and wich are representing the main source of the spread of this antibiotic resistance, through resistant genes, thus ensuring their transmission to other saprophytic agents and pathogenic in humans as well as in poultry (in particular) and animals (in general). In this study, we show the emergence of a multiresistance through the resistance profile of two collections of E. coli poultry Experimental (ELEX1 and ELEX2) to the 6 Quinolones tested (Flumequine (UB), Pefloxacin (PEF), Norfloxacin (NOR), Enrofloxacin (EN), Ciprofloxacin (CIP), and experimental avian influenza vaccines (ELEX1 and ELEX2), as well as a multiresistance through the resistance profile of two collections of E. coli Poultry and Humain to the 40 antibiotics tested (Ampicillin (AMX), Piperacillin (PRL), Ticarcillin (TC), Amoxicillin / Clavulanic Acid (AMC), Cefalexin (CN30), Cefazoline (CZ), Cefalotine (CF) Cefepaxime (CTX), Cefotaxime (CRT), Cefitaxone (FOX), Ceftazidime (CAZ), Cefixime (CFM), Aztreonam ), Gentamycin (CN10), Tobramycin (TOB), Amikacin (AK), Kanamycin (K), Netilmicin (NET), Streptomycin (S), Tetracycline (TE), Doxyciline (DXT), Nalidixic Acid NA), Flumequine (UB), Pefloxacin (PEF), Norfloxacin (NOR), Ofloxacin (OFX), Ciprofloxacin (CIP), Sulfonamides (SSS), Trimethoprim (TMP), Trimethoprim / Sulfamethoxazole Chloramphenicol (C), Fosfomycin (FF), Nitofurantoines (F)). Out of a total of 2635 samples, of which 264 were taken from the two experimental poultry farms (108 for ELEX1 and 156 for ELEX2), 600 collected from the 12 broiler farms (from the 06 communes of the wilaya of Constantine) and 1771 collected from patients of CHU of Constantine (hospital and ambulatory), we obtained 291 of antibiotic-resistant E. Coli strains, including 46 antibiotic-resistant E. Coli strains to the 06 quinolones (for the two collections of E. coli Experimental), 120/209 of E. coli strains (for E. coli aviary strains) and 125 of E. coli strains (for E. coli Human strains) to the 40 antibiotics tested. From the different resistance profiles obtained, the emergence of several resistance profiles follow a selection pressure for antibiotics by misuse of the latter in veterinary medicine and in human medicine (upstream) but also to the dissemination of resistance genes by failure to respect hygienic measures (downstream) and which remain the business of all.Therefore antibiotic resistance monitoring is required at all levels and at all times by the systematic application of ""broad-spectrum antibiogram » on commensal and pathogenic bacterial populations.
Diplôme :	Doctorat en sciences
En ligne :	../theses/veterinaire/LEZ7153.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10434

Titre :	Constituants chimiques, propriétés cytotoxiques, antifongiques et antibactériennes de l’extrait chloroforme de Centaurea diluta Ait. subsp. algeriensis (Coss. & Dur.) Maire
Type de document :	texte imprimé
Auteurs :	Hanène Zater, Auteur ; Fadila Benayache, Directeur de thèse
Editeur :	جامعة الإخوة منتوري قسنطينة
Année de publication :	2017
Importance :	219 f.
Format :	30 cm.
Note générale :	2 copies imprimées disponibles
Langues :	Français (fre)
Tags :	Flavonoïdes  Lignanes  Centaurea diluta  Asteraceae  Activité cytotoxique  Activité antibactérienne directe et indirecte  CCM-bioautographie, CMI  Flavonoids  Lignans  Direct and indirect antibacterial activities  TLC- bioautography  MIC  الفلافونويد  لينيان  dilutaقنطريون  النجمية  السمية الخلوية  مضاد للجراثيم  CCM-bioautography  المباشر وغير المباشر
Index. décimale :	540 Chimie et sciences connexes
Résumé :	This work is apart of our researchunit program relating to the phytochemical and biological studies on the plants of the genus Centaurea (Asteraceae). The species of this genus are potential reserves of bioactive secondary metabolites. The present work concerned initially the in vitro evaluation of the cytotoxic, antifungal and direct and indirect antimicrobial activities of the chloroform soluble part of the hydro-alcoholic extract of the aerial parts of Centaurea diluta Ait. subsp. algeriensis (Coss. & Dur.) Maire, an endemic species to Algeria and Morocco. According to an exhaustive bibliographical research carried out on Centaurea species, no phytochemical nor biological report is available on this subspecies so far; which constitutes one of our selection criteria for this plant. Inactive against 7 tested microorganisms (plant pathogens) fungi, bacteria and yeast, and also inactive in the direct antibacterial test, this extract displayed significant cytotoxic effects on cancer cells (the A549 non-small-cell lung carcinoma, the MCF7 breast adenocarcinoma and the U373 glioblastoma). In indirect antibacterial tests, the CHCl3 extract was able to potentiate the effect of -lactam antibiotics on methicillin-resistant Staphylococcus aureus (MRSA), reducing the minimal inhibitory concentrations (MICs) by a factor of 2-32-fold. No synergy was found between the extract and streptomycin. Biological data allowed to guide the chemical composition of the extract by fractionation, separation and purification on silica gel 60 (CC and TLC). This study led to the isolation of nine components in a pure state and the identification of five of them, by the combination of several spectroscopic analyses. These products were two phenolic compounds (vanillin 1, paridol 3), a lignane [(-arctigenin 2] and two flavonoid aglycones (eupatilin 4 and jaceosidin 5). All the isolated compounds are described for the first time for this species. The 5 identified compounds were evaluated for cytotoxic and antimicrobial activities. Moderate cytotoxic effects were observed on the six tested cancer cell lines (A549, MCF7, U373, Hs683 human glioma, PC3 human prostate and B16-F10 murine melanoma) for both the flavonoid aglycones and the lignane with IC50s in the range 28 μM to 40 μM. In the direct antibacterial test by TLCbioautography, among the five isolated compounds, only jaseosidin 5 showed a moderate antimicrobial activity but this activity was relatively weak on the positive and negative Gram bacteria (MIC of 200 μg/mL on MRSA C98506, MRSA C100459, MRSA ATCC33591, MSSA ATCC6538, E. coli ATCC25922).
Diplôme :	Doctorat en sciences
En ligne :	../theses/chimie/ZAT7155.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10433

Constituants chimiques, propriétés cytotoxiques, antifongiques et antibactériennes de l’extrait chloroforme de Centaurea diluta Ait. subsp. algeriensis (Coss. & Dur.) Maire [texte imprimé] / Hanène Zater, Auteur ; Fadila Benayache, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2017 . - 219 f. ; 30 cm.
2 copies imprimées disponibles

Langues : Français (fre)

Tags :	Flavonoïdes  Lignanes  Centaurea diluta  Asteraceae  Activité cytotoxique  Activité antibactérienne directe et indirecte  CCM-bioautographie, CMI  Flavonoids  Lignans  Direct and indirect antibacterial activities  TLC- bioautography  MIC  الفلافونويد  لينيان  dilutaقنطريون  النجمية  السمية الخلوية  مضاد للجراثيم  CCM-bioautography  المباشر وغير المباشر
Index. décimale :	540 Chimie et sciences connexes
Résumé :	This work is apart of our researchunit program relating to the phytochemical and biological studies on the plants of the genus Centaurea (Asteraceae). The species of this genus are potential reserves of bioactive secondary metabolites. The present work concerned initially the in vitro evaluation of the cytotoxic, antifungal and direct and indirect antimicrobial activities of the chloroform soluble part of the hydro-alcoholic extract of the aerial parts of Centaurea diluta Ait. subsp. algeriensis (Coss. & Dur.) Maire, an endemic species to Algeria and Morocco. According to an exhaustive bibliographical research carried out on Centaurea species, no phytochemical nor biological report is available on this subspecies so far; which constitutes one of our selection criteria for this plant. Inactive against 7 tested microorganisms (plant pathogens) fungi, bacteria and yeast, and also inactive in the direct antibacterial test, this extract displayed significant cytotoxic effects on cancer cells (the A549 non-small-cell lung carcinoma, the MCF7 breast adenocarcinoma and the U373 glioblastoma). In indirect antibacterial tests, the CHCl3 extract was able to potentiate the effect of -lactam antibiotics on methicillin-resistant Staphylococcus aureus (MRSA), reducing the minimal inhibitory concentrations (MICs) by a factor of 2-32-fold. No synergy was found between the extract and streptomycin. Biological data allowed to guide the chemical composition of the extract by fractionation, separation and purification on silica gel 60 (CC and TLC). This study led to the isolation of nine components in a pure state and the identification of five of them, by the combination of several spectroscopic analyses. These products were two phenolic compounds (vanillin 1, paridol 3), a lignane [(-arctigenin 2] and two flavonoid aglycones (eupatilin 4 and jaceosidin 5). All the isolated compounds are described for the first time for this species. The 5 identified compounds were evaluated for cytotoxic and antimicrobial activities. Moderate cytotoxic effects were observed on the six tested cancer cell lines (A549, MCF7, U373, Hs683 human glioma, PC3 human prostate and B16-F10 murine melanoma) for both the flavonoid aglycones and the lignane with IC50s in the range 28 μM to 40 μM. In the direct antibacterial test by TLCbioautography, among the five isolated compounds, only jaseosidin 5 showed a moderate antimicrobial activity but this activity was relatively weak on the positive and negative Gram bacteria (MIC of 200 μg/mL on MRSA C98506, MRSA C100459, MRSA ATCC33591, MSSA ATCC6538, E. coli ATCC25922).
Diplôme :	Doctorat en sciences
En ligne :	../theses/chimie/ZAT7155.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10433

Titre :	Développement d’un système de codage distribué pour la surveillance
Type de document :	texte imprimé
Auteurs :	Nadir Boudjefdjouf, Auteur ; Said Benierbah, Directeur de thèse
Editeur :	جامعة الإخوة منتوري قسنطينة
Année de publication :	2017
Importance :	52 f.
Format :	30 cm.
Note générale :	2 copies imprimées disponibles
Langues :	Français (fre)
Tags :	LDPC  DVC  FBC  PSNR  CVD  موزع الفيديو المشفر
Index. décimale :	621 Electronique
Résumé :	The new video applications, such as video conference over wireless networks, video surveillance, PC cameras and mobile phones suffer from computation and energy resources limitation. In this context, the conventional predictive coding is not effective because its encoder is very complex. For this, it is more interesting to use low-complexity video encoders. To meet these requirements, the distributed video coding was developed having a low complexity at the encoder. Our contribution is the implementation of practical surveillance system, using distributed video coding and running on the wireless (WIFI) network. We have implemented all the operations of encoding, decoding and communication protocol between the encoder and decoder to manage the information’s exchange. We have also proposed some techniques to speed up the system, particularly for the creation of the side information and rate management.
Diplôme :	Magistère
En ligne :	../theses/electronique/BOU7151.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10432

Développement d’un système de codage distribué pour la surveillance [texte imprimé] / Nadir Boudjefdjouf, Auteur ; Said Benierbah, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2017 . - 52 f. ; 30 cm.
2 copies imprimées disponibles

Langues : Français (fre)

Tags :	LDPC  DVC  FBC  PSNR  CVD  موزع الفيديو المشفر
Index. décimale :	621 Electronique
Résumé :	The new video applications, such as video conference over wireless networks, video surveillance, PC cameras and mobile phones suffer from computation and energy resources limitation. In this context, the conventional predictive coding is not effective because its encoder is very complex. For this, it is more interesting to use low-complexity video encoders. To meet these requirements, the distributed video coding was developed having a low complexity at the encoder. Our contribution is the implementation of practical surveillance system, using distributed video coding and running on the wireless (WIFI) network. We have implemented all the operations of encoding, decoding and communication protocol between the encoder and decoder to manage the information’s exchange. We have also proposed some techniques to speed up the system, particularly for the creation of the side information and rate management.
Diplôme :	Magistère
En ligne :	../theses/electronique/BOU7151.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10432

Titre :	Secondary metabolic components and biological effectiveness study on two species Thymelaea microphyllaand Gnidia somalensis
Type de document :	texte imprimé
Auteurs :	Ali Saeed Noman Labib, Auteur ; Amar Zellagui, Directeur de thèse ; Salah Rhouati, Directeur de thèse
Editeur :	جامعة الإخوة منتوري قسنطينة
Année de publication :	2017
Importance :	234 f.
Format :	30 cm.
Note générale :	2 copies imprimées disponibles
Langues :	Anglais (eng)
Tags :	Thymelaea microphylla  antioxidant activity  antimicrobialactivity  microphybenzimidazol  antioxidant activité  antimicrobialactivités  الفعالية المضادة للأكسد  الفعالية المضادة للميكروبات
Index. décimale :	540 Chimie et sciences connexes
Résumé :	The main objective of our work is phytochemical studies and evaluation of secondary metabolite products extracted from Thymelaeaceae family which is rich in biological active phenolic compounds. So, we choose Thymelaea microphylla, which grows in Algeria. In addition to another plant from the same family; Gnidia somalensis growing in Yemen. Our study also, devoted to the evaluation and effectiveness of the plant extracts and pure compounds against cancer cells. We used the ELISA and xCELLigence assay technics for determining the inhibition of fractions and pure compounds in vitro, against HeLa cells (human uterus carcinoma) and C6 cells (rat brain tumor). Which have shown positive results, especially for fractions that have a high activity compared with the reference compound. In addition, we have got a significant results by testing the pure compounds (Prestegane B, daphnoretin and trans-tiliroside) which gave a positive results. On the other hand, we were able to isolated 10 compounds from T. microphylla: • Two lignan lactones. • One bicoumarin. • Four flavonoids. • Two spiro lactones. • One new alkaloid (microphybenzimidazole). Also, we have separated 12 phenolic compounds from the plant Gnidia somalensis: 6 polysubstituted cinnamic acid derivatives and 6 flavonoids. We used different chromatographic methods for separation and purification (Column chromatography CC, thin layer chromatography TLC), and spectroscopic tools for structure identification (HPLC LC-MS, HPLCTOF), ID (Tf -NMR, 13C- NMR and DEPT) and 2D (HMQC, HMBC and COSY).
Diplôme :	Doctorat en sciences
En ligne :	../theses/chimie/LAB7152.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10431

Secondary metabolic components and biological effectiveness study on two species Thymelaea microphyllaand Gnidia somalensis [texte imprimé] / Ali Saeed Noman Labib, Auteur ; Amar Zellagui, Directeur de thèse ; Salah Rhouati, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2017 . - 234 f. ; 30 cm.
2 copies imprimées disponibles

Langues : Anglais (eng)

Tags :	Thymelaea microphylla  antioxidant activity  antimicrobialactivity  microphybenzimidazol  antioxidant activité  antimicrobialactivités  الفعالية المضادة للأكسد  الفعالية المضادة للميكروبات
Index. décimale :	540 Chimie et sciences connexes
Résumé :	The main objective of our work is phytochemical studies and evaluation of secondary metabolite products extracted from Thymelaeaceae family which is rich in biological active phenolic compounds. So, we choose Thymelaea microphylla, which grows in Algeria. In addition to another plant from the same family; Gnidia somalensis growing in Yemen. Our study also, devoted to the evaluation and effectiveness of the plant extracts and pure compounds against cancer cells. We used the ELISA and xCELLigence assay technics for determining the inhibition of fractions and pure compounds in vitro, against HeLa cells (human uterus carcinoma) and C6 cells (rat brain tumor). Which have shown positive results, especially for fractions that have a high activity compared with the reference compound. In addition, we have got a significant results by testing the pure compounds (Prestegane B, daphnoretin and trans-tiliroside) which gave a positive results. On the other hand, we were able to isolated 10 compounds from T. microphylla: • Two lignan lactones. • One bicoumarin. • Four flavonoids. • Two spiro lactones. • One new alkaloid (microphybenzimidazole). Also, we have separated 12 phenolic compounds from the plant Gnidia somalensis: 6 polysubstituted cinnamic acid derivatives and 6 flavonoids. We used different chromatographic methods for separation and purification (Column chromatography CC, thin layer chromatography TLC), and spectroscopic tools for structure identification (HPLC LC-MS, HPLCTOF), ID (Tf -NMR, 13C- NMR and DEPT) and 2D (HMQC, HMBC and COSY).
Diplôme :	Doctorat en sciences
En ligne :	../theses/chimie/LAB7152.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10431

Titre :	Phytochemical and biological studies of two Algerian medicinal plants : Cytisus villosus Pourr. (Fabaceae) and Hypericum afrum Lam. (Hypericaceae)
Type de document :	texte imprimé
Auteurs :	Farida Larit, Auteur ; Samira Benyahia, Directeur de thèse
Editeur :	جامعة الإخوة منتوري قسنطينة
Année de publication :	2017
Importance :	353 f.
Format :	30 cm.
Note générale :	2 copies imprimées disponibles
Langues :	Anglais (eng)
Tags :	Hypericum  Cytisus  Secondary metabolites  Total phenolics  Antioxidant  Cytotoxicity  Antifungal  Antibacterial  Antimalarial  Antileishmanial  Activity  MAO-A and MAO-B  Docking  Simulation  Métabolites secondaires  Total phénoliques  Cytotoxicité  Antifongique  Antibactérienne  Antipaludique  Antileishmanienne  MAO-A et MAO-B  "MAO-A MAO-B Cytisus Hypericum تقنیات النموذجیة الجزیئیة  مضاد للاكسدة  مضاد لليشمانيا  مضاد الملاريا  مضاد التريبانوسوما"
Index. décimale :	540 Chimie et sciences connexes
Résumé :	Natural products are important sources of novel therapeutic agents. Bioactive secondary metabolites isolated from natural sources, can act as drugs or as lead compounds for synthetic drugs. In our work, two plants have been studied; the endemic species of Hypericum afrum Lam.(Hypericaceae) and Cytisus villosus Pourr. (Fabaceae). Fractions of the aerial parts of these two plants have been screened in vitro for several biological assays including cannabinoid and opioid receptors agonist assays, antifungal, antibacterial, antimalarial, antileishmanial, antiproliferative, antioxidant, anti-inflammatory and MAO inhibition. The chloroform, ethyl acetate and n-butanol fractions of H. afrum showed significant antioxidant activity and potent antitrypanosomal activity against T. brucei. The n-butanol fraction of C. villosus showed highly potent antitrypanosomal activity against T. brucei. In addition, the ethyl acetate fractions of both plants showed potent inhibition of recombinant human monoamine oxidases (MAO-A and -B). A bioassay-guided fractionation paradigm has been used for the isolation of bioactive compounds of these plants and hence the subfractions that showed significant activity were further purified. This study led to the isolation and identification of 20 compounds, three of which belonging to phloroglucinols, terpenoids and isoflavonoids are new. The structures of the isolated compounds were elucidated through various spectroscopic methods, including high- resolution mass spectrometry, one and two-dimensional nuclear magnetic resonance spectroscopy. Computational study was carried out by conformational search and docking techniques to provide insight into the binding mode of molecules on the active site of MAO’s isoenzymes.
Diplôme :	Doctorat en sciences
En ligne :	../theses/chimie/LAR7157.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10430

Phytochemical and biological studies of two Algerian medicinal plants : Cytisus villosus Pourr. (Fabaceae) and Hypericum afrum Lam. (Hypericaceae) [texte imprimé] / Farida Larit, Auteur ; Samira Benyahia, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2017 . - 353 f. ; 30 cm.
2 copies imprimées disponibles

Langues : Anglais (eng)

Tags :	Hypericum  Cytisus  Secondary metabolites  Total phenolics  Antioxidant  Cytotoxicity  Antifungal  Antibacterial  Antimalarial  Antileishmanial  Activity  MAO-A and MAO-B  Docking  Simulation  Métabolites secondaires  Total phénoliques  Cytotoxicité  Antifongique  Antibactérienne  Antipaludique  Antileishmanienne  MAO-A et MAO-B  "MAO-A MAO-B Cytisus Hypericum تقنیات النموذجیة الجزیئیة  مضاد للاكسدة  مضاد لليشمانيا  مضاد الملاريا  مضاد التريبانوسوما"
Index. décimale :	540 Chimie et sciences connexes
Résumé :	Natural products are important sources of novel therapeutic agents. Bioactive secondary metabolites isolated from natural sources, can act as drugs or as lead compounds for synthetic drugs. In our work, two plants have been studied; the endemic species of Hypericum afrum Lam.(Hypericaceae) and Cytisus villosus Pourr. (Fabaceae). Fractions of the aerial parts of these two plants have been screened in vitro for several biological assays including cannabinoid and opioid receptors agonist assays, antifungal, antibacterial, antimalarial, antileishmanial, antiproliferative, antioxidant, anti-inflammatory and MAO inhibition. The chloroform, ethyl acetate and n-butanol fractions of H. afrum showed significant antioxidant activity and potent antitrypanosomal activity against T. brucei. The n-butanol fraction of C. villosus showed highly potent antitrypanosomal activity against T. brucei. In addition, the ethyl acetate fractions of both plants showed potent inhibition of recombinant human monoamine oxidases (MAO-A and -B). A bioassay-guided fractionation paradigm has been used for the isolation of bioactive compounds of these plants and hence the subfractions that showed significant activity were further purified. This study led to the isolation and identification of 20 compounds, three of which belonging to phloroglucinols, terpenoids and isoflavonoids are new. The structures of the isolated compounds were elucidated through various spectroscopic methods, including high- resolution mass spectrometry, one and two-dimensional nuclear magnetic resonance spectroscopy. Computational study was carried out by conformational search and docking techniques to provide insight into the binding mode of molecules on the active site of MAO’s isoenzymes.
Diplôme :	Doctorat en sciences
En ligne :	../theses/chimie/LAR7157.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10430

Titre :	Elaboration par sol-gel et caracterisation d’oxyde metallique (type : α-fe2o3) aux propries photocatalytiques
Type de document :	texte imprimé
Auteurs :	Abdelmadjid Bazine, Auteur ; Mohamed-Salah Ferah, Directeur de thèse
Editeur :	جامعة الإخوة منتوري قسنطينة
Année de publication :	2017
Importance :	85 f.
Format :	30 cm.
Note générale :	2 copies imprimées disponibles
Langues :	Français (fre)
Tags :	Thin films  Sol-Gel  Fe2O3  photocatalysis  Hematite phase (α-Fe2O3)  Transmission  الشرائح الرقيقة  التحفيز الضوئي  طور Hématite (a-Fe2O3)
Index. décimale :	530 Physique
Résumé :	Thin iron oxide layers Fe2O3were synthesized successfully using (FeCLଷ, 6HଶO),as precursor, ethanol as solvent and acetic acid as catalyst according to the Sol-Gel process and spin-coating technique. The evolution of the optical, structural of these films was split into two parts. The first deals with the effect of the concentration of the solution of deposit.The second part is devoted to the effect of thickness of iron oxide layers thin films. For that, various techniques of investigation were used: The structural properties of the films were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Raman spectroscopy, and optical properties by the UV-Vis spectroscopy. Structural characterisation ofFe2O3 thin films by DRX and Raman spectroscopyhas proved theformation of Hematite phase (α-Fe2O3) size with determined structure. UV-Visible spectroscopy has been used for the determination of optical gap and for calculating crystallites size. This study shows a singular behaviour of optical transmission characterized by two bearings and a clear dependence of optoelectronic parameters with film thickness.
Diplôme :	Magistère
En ligne :	../theses/physique/BAZ7156.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10429

Elaboration par sol-gel et caracterisation d’oxyde metallique (type : α-fe2o3) aux propries photocatalytiques [texte imprimé] / Abdelmadjid Bazine, Auteur ; Mohamed-Salah Ferah, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2017 . - 85 f. ; 30 cm.
2 copies imprimées disponibles

Langues : Français (fre)

Tags :	Thin films  Sol-Gel  Fe2O3  photocatalysis  Hematite phase (α-Fe2O3)  Transmission  الشرائح الرقيقة  التحفيز الضوئي  طور Hématite (a-Fe2O3)
Index. décimale :	530 Physique
Résumé :	Thin iron oxide layers Fe2O3were synthesized successfully using (FeCLଷ, 6HଶO),as precursor, ethanol as solvent and acetic acid as catalyst according to the Sol-Gel process and spin-coating technique. The evolution of the optical, structural of these films was split into two parts. The first deals with the effect of the concentration of the solution of deposit.The second part is devoted to the effect of thickness of iron oxide layers thin films. For that, various techniques of investigation were used: The structural properties of the films were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Raman spectroscopy, and optical properties by the UV-Vis spectroscopy. Structural characterisation ofFe2O3 thin films by DRX and Raman spectroscopyhas proved theformation of Hematite phase (α-Fe2O3) size with determined structure. UV-Visible spectroscopy has been used for the determination of optical gap and for calculating crystallites size. This study shows a singular behaviour of optical transmission characterized by two bearings and a clear dependence of optoelectronic parameters with film thickness.
Diplôme :	Magistère
En ligne :	../theses/physique/BAZ7156.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10429

Titre :	Etude paramétrique des échanges convectifs turbulents dans les configurations d’intérêt pratique
Type de document :	texte imprimé
Auteurs :	Ridha Mebrouk, Auteur ; Abderrahim Boudenne, Directeur de thèse ; Yassine Kabar, Directeur de thèse
Editeur :	جامعة الإخوة منتوري قسنطينة
Année de publication :	2017
Importance :	139 f.
Format :	30 cm.
Note générale :	2 copies imprimées disponibles
Langues :	Français (fre)
Tags :	Convection turbulente  Simulation numérique  Nanofluide  Enceinte chauffée par le bas, Convection forcée  Echanges turbulents  Echangeur de chaleur  Transfert thermique conjugué  Turbulent convection  Numerical simulation  Nanofluid  Enclosure heated from below  Forced convection  Turbulent exchanges  Heat exchanger  Conjugate heat transfer  الحمل المضطرب؛ المحاكاة العددیة؛ نانومائع؛ تجویفات مسخنة من الأسفل؛ الحمل القسري؛ التبادل المضطرب، المبادلات الحراریة؛نقل الحرارة المترافقة
Index. décimale :	620 Génie Mécanique
Résumé :	This thesis presents the results of two studies: the first concerns natural turbulent convection in a rectangular cavity heated from the bottom wall and filled with a nanofluid and the second relates to the investigation of conjugate heat transfer in a fin-and-tube heat exchanger. The cavity of the first study is tall and has a heat source embedded on its bottom wall, while its left, right and top walls are maintained at a relatively low temperature. The working fluid is a water based nanofluid having three nanoparticle types: alumina, copper and copper oxide. The influence of pertinent parameters such as the Rayleigh number, the type of nanofluid and solid volume fraction of nanoparticles on the cooling performance is studied. Steady forms of two dimensional Reynolds-Averaged-Navier-Stokes equations and conservation equations of mass and energy, coupled with the Boussinesq approximation, are solved by the control volume based discretisation method employing the SIMPLE algorithm for pressure-velocity coupling. Turbulence is modeled using the standard k-ε model. The Rayleigh number, Ra, is varied from 2.49x1009 to 2.49x1011. The volume fractions of nanoparticles were varied in the interval 0≤φ≤ 6% . Stream lines, isotherms, velocity profiles and Temperature profiles are presented for various combinations of Ra, the type of nanofluid and solid volume fraction of nanoparticles. The results are reported in the form of average Nusselt number on the heated wall. It is shown that for all values of Ra, the average heat transfer rate from the heat source increases almost linearly and monotonically as the solid volume fraction increases. Finally the average heat transfer rate takes on values that decrease according to the ordering Cu, CuO and Al2O3. In the second study we determined the heat transfer and friction characteristics of a realistic fin-andtube heat exchanger . The computations assume steady-state heat transfer and fluid flow. Nusselt number and friction factor characteristics of the heat exchanger are presented for various values of Reynolds numbers. The energy conservation and the heat conduction equations in 3 dimensions have been solved in the fluid and the solid respectivelyalong with the mass and momentum conservation equations in order to determine these characteristics. Both laminar and turbulent flow regimes are considered. The effect of turbulence modeling was investigated using three different models (the one equation Spalart-Allmaras turbulence model, the standard k-ε model and the RSM model). The computations allowed the determination of the dynamic and thermal fields. Model validation was carried out by comparing the calculated friction factor f and Colburn j-factor to experimental results found in the literature. The plotted results showed a qualitatively good agreement between numerical results and experimental data. The results obtained also showed that the simplest of the three turbulence models tested(i.e. SpalartAllmaras) gives the closest values to the experimental data
Diplôme :	Doctorat en sciences
En ligne :	../theses/gmecanique/MEB7154.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10428

Etude paramétrique des échanges convectifs turbulents dans les configurations d’intérêt pratique [texte imprimé] / Ridha Mebrouk, Auteur ; Abderrahim Boudenne, Directeur de thèse ; Yassine Kabar, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2017 . - 139 f. ; 30 cm.
2 copies imprimées disponibles

Langues : Français (fre)

Tags :	Convection turbulente  Simulation numérique  Nanofluide  Enceinte chauffée par le bas, Convection forcée  Echanges turbulents  Echangeur de chaleur  Transfert thermique conjugué  Turbulent convection  Numerical simulation  Nanofluid  Enclosure heated from below  Forced convection  Turbulent exchanges  Heat exchanger  Conjugate heat transfer  الحمل المضطرب؛ المحاكاة العددیة؛ نانومائع؛ تجویفات مسخنة من الأسفل؛ الحمل القسري؛ التبادل المضطرب، المبادلات الحراریة؛نقل الحرارة المترافقة
Index. décimale :	620 Génie Mécanique
Résumé :	This thesis presents the results of two studies: the first concerns natural turbulent convection in a rectangular cavity heated from the bottom wall and filled with a nanofluid and the second relates to the investigation of conjugate heat transfer in a fin-and-tube heat exchanger. The cavity of the first study is tall and has a heat source embedded on its bottom wall, while its left, right and top walls are maintained at a relatively low temperature. The working fluid is a water based nanofluid having three nanoparticle types: alumina, copper and copper oxide. The influence of pertinent parameters such as the Rayleigh number, the type of nanofluid and solid volume fraction of nanoparticles on the cooling performance is studied. Steady forms of two dimensional Reynolds-Averaged-Navier-Stokes equations and conservation equations of mass and energy, coupled with the Boussinesq approximation, are solved by the control volume based discretisation method employing the SIMPLE algorithm for pressure-velocity coupling. Turbulence is modeled using the standard k-ε model. The Rayleigh number, Ra, is varied from 2.49x1009 to 2.49x1011. The volume fractions of nanoparticles were varied in the interval 0≤φ≤ 6% . Stream lines, isotherms, velocity profiles and Temperature profiles are presented for various combinations of Ra, the type of nanofluid and solid volume fraction of nanoparticles. The results are reported in the form of average Nusselt number on the heated wall. It is shown that for all values of Ra, the average heat transfer rate from the heat source increases almost linearly and monotonically as the solid volume fraction increases. Finally the average heat transfer rate takes on values that decrease according to the ordering Cu, CuO and Al2O3. In the second study we determined the heat transfer and friction characteristics of a realistic fin-andtube heat exchanger . The computations assume steady-state heat transfer and fluid flow. Nusselt number and friction factor characteristics of the heat exchanger are presented for various values of Reynolds numbers. The energy conservation and the heat conduction equations in 3 dimensions have been solved in the fluid and the solid respectivelyalong with the mass and momentum conservation equations in order to determine these characteristics. Both laminar and turbulent flow regimes are considered. The effect of turbulence modeling was investigated using three different models (the one equation Spalart-Allmaras turbulence model, the standard k-ε model and the RSM model). The computations allowed the determination of the dynamic and thermal fields. Model validation was carried out by comparing the calculated friction factor f and Colburn j-factor to experimental results found in the literature. The plotted results showed a qualitatively good agreement between numerical results and experimental data. The results obtained also showed that the simplest of the three turbulence models tested(i.e. SpalartAllmaras) gives the closest values to the experimental data
Diplôme :	Doctorat en sciences
En ligne :	../theses/gmecanique/MEB7154.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10428

Titre :	Caractérisation du fromage traditionnel algérien : Medeghissa
Type de document :	texte imprimé
Auteurs :	Ghania Khoualdi, Auteur ; Mohammed Nasreddine Zidoune, Directeur de thèse
Editeur :	جامعة الإخوة منتوري قسنطينة
Année de publication :	2017
Importance :	125 f.
Format :	30 cm.
Note générale :	2 copies imprimées disponibles
Langues :	Français (fre)
Tags :	Medeghissa  fromage traditionnel  enquête  diagramme de fabrication  fondu  traditional cheese  survey  manufacturing diagram  melted  مدغيسة  جبن تقليدي  تحقيق ميداني  مخطط الصناعة  جبن ذائب
Index. décimale :	640 Industrie Alimentaire
Résumé :	Medeghissa is a traditional Algerian cheese known among the Chaouia under its original name Imedeghest. It is a melted cheese, prepared by cooking semi dry Klila in whole milk from cow, goat or sheep, on low heat. The aim of our work is the characterization Medeghissa basing on two integrated and dependent axes, namely a characterization by means of a field survey carried out in the Wilaya of Oum El-Bouaghi and Affected 105 women of rural origin; And an experimental characterization of the collected samples from farms and controlled manufactures (physicochemical, microbiological and sensorial analyzes). The cheese-making diagram was based on survey results and verified on the laboratory scale. 84 women questioned know this cheese but its manufacture was limited on 3.8% of them. Madghessa is eaten as a snack and appreciated for its elasticity and taste by all women surveyed. The manufactured Madghessa has a pH average of 4.82 ± 0.15 and an acidity of 0,41±0,15 g / 100 g. The recorded dry extract is 34.78 ± 1.2 g / 100 g. This result is similar to that of the collected samples (33.64 ± 4.13 g / 100 g). This cheese has an average fat content of 7.78 ± 1.99 g / 100 g and a protein level of 25.94 ± 4.53 g / 100 g. According to codex alimentarius STAN A-6 (1978), this cheese can be classified under lean, soft cheese (MG / ES <10%), HRED> 67%). According to the microbiological analyzes on the different samples, the cheese has a good hygienic quality marked by a total absence of the contamination indicator germs and pathogenic germs namely: total and fecal coliforms, faecal streptococci, Salmonella and Staphylococus aureus As well as spores of sulfito-reducing anaerobes. Madghessa has a low microbial load in the range of 102 to 103 CFU / g for the total mesophilic flora. The mesophilic and thermophilic lactic bacteria reach values of the order 104 CFU / g. On the other hand, the number of yeasts and molds shows variability from zero to 103 CFU / g. On the organoleptic level, Madghessa is a soft cheese, with a weak acid taste. The paste of the cheese is elastic with pseudoplastic character when it is hot and becomes firm with the cooling. Its smell and aroma are mainly of the lactic family.
Diplôme :	Magistère
En ligne :	../theses/agronomie/KHO7145.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10427

Caractérisation du fromage traditionnel algérien : Medeghissa [texte imprimé] / Ghania Khoualdi, Auteur ; Mohammed Nasreddine Zidoune, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2017 . - 125 f. ; 30 cm.
2 copies imprimées disponibles

Langues : Français (fre)

Tags :	Medeghissa  fromage traditionnel  enquête  diagramme de fabrication  fondu  traditional cheese  survey  manufacturing diagram  melted  مدغيسة  جبن تقليدي  تحقيق ميداني  مخطط الصناعة  جبن ذائب
Index. décimale :	640 Industrie Alimentaire
Résumé :	Medeghissa is a traditional Algerian cheese known among the Chaouia under its original name Imedeghest. It is a melted cheese, prepared by cooking semi dry Klila in whole milk from cow, goat or sheep, on low heat. The aim of our work is the characterization Medeghissa basing on two integrated and dependent axes, namely a characterization by means of a field survey carried out in the Wilaya of Oum El-Bouaghi and Affected 105 women of rural origin; And an experimental characterization of the collected samples from farms and controlled manufactures (physicochemical, microbiological and sensorial analyzes). The cheese-making diagram was based on survey results and verified on the laboratory scale. 84 women questioned know this cheese but its manufacture was limited on 3.8% of them. Madghessa is eaten as a snack and appreciated for its elasticity and taste by all women surveyed. The manufactured Madghessa has a pH average of 4.82 ± 0.15 and an acidity of 0,41±0,15 g / 100 g. The recorded dry extract is 34.78 ± 1.2 g / 100 g. This result is similar to that of the collected samples (33.64 ± 4.13 g / 100 g). This cheese has an average fat content of 7.78 ± 1.99 g / 100 g and a protein level of 25.94 ± 4.53 g / 100 g. According to codex alimentarius STAN A-6 (1978), this cheese can be classified under lean, soft cheese (MG / ES <10%), HRED> 67%). According to the microbiological analyzes on the different samples, the cheese has a good hygienic quality marked by a total absence of the contamination indicator germs and pathogenic germs namely: total and fecal coliforms, faecal streptococci, Salmonella and Staphylococus aureus As well as spores of sulfito-reducing anaerobes. Madghessa has a low microbial load in the range of 102 to 103 CFU / g for the total mesophilic flora. The mesophilic and thermophilic lactic bacteria reach values of the order 104 CFU / g. On the other hand, the number of yeasts and molds shows variability from zero to 103 CFU / g. On the organoleptic level, Madghessa is a soft cheese, with a weak acid taste. The paste of the cheese is elastic with pseudoplastic character when it is hot and becomes firm with the cooling. Its smell and aroma are mainly of the lactic family.
Diplôme :	Magistère
En ligne :	../theses/agronomie/KHO7145.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10427

Titre :	التنوع الصنفي لنخيل التمر (.L dactylifera Phoenix) التوصيف، التوزيع وتأقلم مختلف الأصناف في منطقة الزيبان سكرة.
Type de document :	texte imprimé
Auteurs :	أحمد سي مزراق, Auteur ; محمد المنصف بن تشيكو, Auteur ; محمد المنصف بن تشيكو, Directeur de thèse
Importance :	120 ورقة
Format :	30 سم.
Note générale :	2نسخ موجودة مكتبة المركزية
Langues :	Arabe (ara)
Tags :	نخيل التمر  تنوع صنفي  توصيف مورفولوجي  توزيع  تأقلم  الزيبان
Index. décimale :	570 بيولوجيا
Résumé :	This work was carried out on 89 autochthonous varieties of date palm (Phoenix dactylifera L.) in the oasis of the Zibans region (Biskra) for three consecutive years (2010 to 2012) and was dedicated to the study of the most distinctive varieties in term of phenotypic criterion. Trough some statistical tools (PCA and FAC), we identified the discriminating characteristics and / or similar between the different genotypes. Particular attention was paid to the presence, location and distribution of these varieties in the vast region of Ziban related to the environment of this area. The results showed an efficiency of the morphological characters (quantitative and qualitative) of fruits and leaves by highlighting the differences and similarities in genetic patrimony. A very large varietal diversity was found in the oasis of Sidi Okba and Tolga, almost all of that phytogenetic potential is in adequacy with the specific bioclimatic conditions of the region.
Diplôme :	Doctorat en sciences
En ligne :	../theses/biologie/sim4162.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10426

التنوع الصنفي لنخيل التمر (.L dactylifera Phoenix) التوصيف، التوزيع وتأقلم مختلف الأصناف في منطقة الزيبان سكرة. [texte imprimé] / أحمد سي مزراق, Auteur ; محمد المنصف بن تشيكو, Auteur ; محمد المنصف بن تشيكو, Directeur de thèse . - [s.d.] . - 120 ورقة ; 30 سم.
2نسخ موجودة مكتبة المركزية

Langues : Arabe (ara)

Tags :	نخيل التمر  تنوع صنفي  توصيف مورفولوجي  توزيع  تأقلم  الزيبان
Index. décimale :	570 بيولوجيا
Résumé :	This work was carried out on 89 autochthonous varieties of date palm (Phoenix dactylifera L.) in the oasis of the Zibans region (Biskra) for three consecutive years (2010 to 2012) and was dedicated to the study of the most distinctive varieties in term of phenotypic criterion. Trough some statistical tools (PCA and FAC), we identified the discriminating characteristics and / or similar between the different genotypes. Particular attention was paid to the presence, location and distribution of these varieties in the vast region of Ziban related to the environment of this area. The results showed an efficiency of the morphological characters (quantitative and qualitative) of fruits and leaves by highlighting the differences and similarities in genetic patrimony. A very large varietal diversity was found in the oasis of Sidi Okba and Tolga, almost all of that phytogenetic potential is in adequacy with the specific bioclimatic conditions of the region.
Diplôme :	Doctorat en sciences
En ligne :	../theses/biologie/sim4162.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10426

Titre :	ظاهرة البناء الفوضوي بالمدن الكبرى الجزائرية : الواقع ورهانات التسوية في اطار الحوكمة الحضرية-حالة مدينة قسنطينة
Type de document :	texte imprimé
Auteurs :	نعيمة حمود, Auteur ; عبد الوهاب لكحل, Directeur de thèse
Editeur :	جامعة الإخوة منتوري قسنطينة
Année de publication :	2016
Importance :	365 ورقة
Note générale :	2نسخ موجودة مكتبة المركزية
Langues :	Arabe (ara)
Tags :	Algeria  Constantine  informal accommodation  urbanization phenomenon  socioeconomic characteristics space  Characteristics Adjustment  Urban Governance
Index. décimale :	711 التهيئة العمرانية
Résumé :	In recent years, non-regulatory neighborhoods attract the interest of public authorities. These are striving to bring tirelessly arrangements and new guidelines for appropriate urban governance. This area is in fact our basic premise that we have tried to elucidate throughout this thesis. It is building on a series of demographic, economic, sociological and historical settings that we managed to very convincing results which demonstrate unequivocally that the phenomenon of informal settlements in the Algerian cities is old and in no way characterizes the post-independence period with the appearance of many illegal neighborhoods in the image of the city and the city Ben Tellis, Halbedel to Constantine. To give face to this type of habitat and highlight its morphological features its socio-economic and spatial dimension, we focused our analysis as an analytical approach, quantitative. This draws in urban governance framework of typical modes of intervention according to the specificities of each area.
Diplôme :	Doctorat en sciences
En ligne :	../theses/francais/KHE1418.pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10425

ظاهرة البناء الفوضوي بالمدن الكبرى الجزائرية : الواقع ورهانات التسوية في اطار الحوكمة الحضرية-حالة مدينة قسنطينة [texte imprimé] / نعيمة حمود, Auteur ; عبد الوهاب لكحل, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2016 . - 365 ورقة.
2نسخ موجودة مكتبة المركزية

Langues : Arabe (ara)

Tags :	Algeria  Constantine  informal accommodation  urbanization phenomenon  socioeconomic characteristics space  Characteristics Adjustment  Urban Governance
Index. décimale :	711 التهيئة العمرانية
Résumé :	In recent years, non-regulatory neighborhoods attract the interest of public authorities. These are striving to bring tirelessly arrangements and new guidelines for appropriate urban governance. This area is in fact our basic premise that we have tried to elucidate throughout this thesis. It is building on a series of demographic, economic, sociological and historical settings that we managed to very convincing results which demonstrate unequivocally that the phenomenon of informal settlements in the Algerian cities is old and in no way characterizes the post-independence period with the appearance of many illegal neighborhoods in the image of the city and the city Ben Tellis, Halbedel to Constantine. To give face to this type of habitat and highlight its morphological features its socio-economic and spatial dimension, we focused our analysis as an analytical approach, quantitative. This draws in urban governance framework of typical modes of intervention according to the specificities of each area.
Diplôme :	Doctorat en sciences
En ligne :	../theses/francais/KHE1418.pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10425

Titre :	أثر النقد الأنجلو-أمريكي الجديد في النقد العربي المعاصر
Type de document :	texte imprimé
Auteurs :	أحسن دواس, Auteur ; يوسف وغليسي, Directeur de thèse
Editeur :	جامعة الإخوة منتوري قسنطينة
Année de publication :	2016
Importance :	445. ورقة
Format :	30 سم.
Note générale :	2نسخ موجودة مكتبة المركزية
Langues :	Arabe (ara)
Tags :	النقد الجديد  الموضوعية  المعادل الموضوعي  التحليل النصاني  الشكلانية  رانسم  بروكس  ريتشاردز  إليوت
Index. décimale :	810 أدب عربي
Résumé :	This thesis dealt with the study of one of the most important Western schools of literary criticism in the twentieth century, which was characterized by its revolution on the other categories of cash curriculum that preceded it such as impressionist criticism and historical, social and it focused on the idea of a return to the intrinsic and to the analysis of the literary text and especially poems as a linguistic pure entity and put out everything else, starting from the author and his biography and his environment and finishing with end the reader and his potential impact in the text. In order to understand the essence of the school of new criticism this study tried to lighten the way through the study of intellectual and philosophical backgrounds of its apostles and that contributed to the crystallization of its components as a aesthetic philosophy of Croce, and the imagism of Ezra Pound, and the poetics of Aristotle, and romanticism of Coleridge and other references that the school built on them its rules in order to highlight as an distinct critical approach which was the leader in the rigorous analysis of literary text based on new mechanisms and presents new elements such as close reading, tension in the poetry, and the paradox of language, ambiguity, and organic unity, and the intentional fallacy and affective fallacy, the objective correlative and so on. The new criticism arouse as an influential school through different visions among them we find: the Analytical criticism of Cleanth Brooks, the ontological criticism of John Crowe Ransom, the verbal analysis of I. A. Richards and Blackmore, and Frank Leavis, the types of ambiguity of William Empson, and the objective criticism of T.S Eliot. And to identify the subject of this research I have to follow the path of the school in its original Anglo-American environment and then its migration to the Arab environment. On the basis of this bilateral vision there was in front of the researcher two important missions the first was to take in all the categories of school in both the English and the American tides, these statements that have shaped the visions of the school and made of it a unique critical approach with its independent status and its own extensions. And this what makes which make the new criticism a school that controlled the West scene of literary criticism over more of seventy years. The second mission was to track the impact of this school in the Arab critical discourse, through the study of the different factors in the migration of ideas and theories from a specific milieu to another one such as translation and scientific missions and Orientalism. And finally the study the manifestations of the effect of this school on Arab critics; so many attempts appeared to adopt the principles of the school or to bring up its spirit such as the objective ;method in Rashad Rushdi and the internal vision of Anas Daoud and artistic vision of Abdul-Aziz Eldesouki. One of the most important results of this research is that the school of the new criticism is the one that paved the way to the emergence of almost all the other textual literary methods such as structuralism, semiotics, and deconstruction, etc. which they directly derived from the ideas and views and the proposals of new critics.
Diplôme :	Doctorat en sciences
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10424

أثر النقد الأنجلو-أمريكي الجديد في النقد العربي المعاصر [texte imprimé] / أحسن دواس, Auteur ; يوسف وغليسي, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2016 . - 445. ورقة ; 30 سم.
2نسخ موجودة مكتبة المركزية
Langues : Arabe (ara)

Tags :	النقد الجديد  الموضوعية  المعادل الموضوعي  التحليل النصاني  الشكلانية  رانسم  بروكس  ريتشاردز  إليوت
Index. décimale :	810 أدب عربي
Résumé :	This thesis dealt with the study of one of the most important Western schools of literary criticism in the twentieth century, which was characterized by its revolution on the other categories of cash curriculum that preceded it such as impressionist criticism and historical, social and it focused on the idea of a return to the intrinsic and to the analysis of the literary text and especially poems as a linguistic pure entity and put out everything else, starting from the author and his biography and his environment and finishing with end the reader and his potential impact in the text. In order to understand the essence of the school of new criticism this study tried to lighten the way through the study of intellectual and philosophical backgrounds of its apostles and that contributed to the crystallization of its components as a aesthetic philosophy of Croce, and the imagism of Ezra Pound, and the poetics of Aristotle, and romanticism of Coleridge and other references that the school built on them its rules in order to highlight as an distinct critical approach which was the leader in the rigorous analysis of literary text based on new mechanisms and presents new elements such as close reading, tension in the poetry, and the paradox of language, ambiguity, and organic unity, and the intentional fallacy and affective fallacy, the objective correlative and so on. The new criticism arouse as an influential school through different visions among them we find: the Analytical criticism of Cleanth Brooks, the ontological criticism of John Crowe Ransom, the verbal analysis of I. A. Richards and Blackmore, and Frank Leavis, the types of ambiguity of William Empson, and the objective criticism of T.S Eliot. And to identify the subject of this research I have to follow the path of the school in its original Anglo-American environment and then its migration to the Arab environment. On the basis of this bilateral vision there was in front of the researcher two important missions the first was to take in all the categories of school in both the English and the American tides, these statements that have shaped the visions of the school and made of it a unique critical approach with its independent status and its own extensions. And this what makes which make the new criticism a school that controlled the West scene of literary criticism over more of seventy years. The second mission was to track the impact of this school in the Arab critical discourse, through the study of the different factors in the migration of ideas and theories from a specific milieu to another one such as translation and scientific missions and Orientalism. And finally the study the manifestations of the effect of this school on Arab critics; so many attempts appeared to adopt the principles of the school or to bring up its spirit such as the objective ;method in Rashad Rushdi and the internal vision of Anas Daoud and artistic vision of Abdul-Aziz Eldesouki. One of the most important results of this research is that the school of the new criticism is the one that paved the way to the emergence of almost all the other textual literary methods such as structuralism, semiotics, and deconstruction, etc. which they directly derived from the ideas and views and the proposals of new critics.
Diplôme :	Doctorat en sciences
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10424

Titre :	السرد في الشعر العربي قبل الإسلام
Type de document :	texte imprimé
Auteurs :	راضية لرقم, Auteur ; محمد بن زاوي, Directeur de thèse
Editeur :	جامعة الإخوة منتوري قسنطينة
Année de publication :	2016
Importance :	857 ورقة.
Format :	30 سم.
Note générale :	2نسخ موجودة مكتبة المركزية
Langues :	Arabe (ara)
Tags :	السرد  الشعر العربي  فترة ما قبل الإسلام  القصة العربية السرد  الشعر  فبل الاسلام  الايقاع  القصص الشعرية
Index. décimale :	810 أدب عربي
Résumé :	This research concerns about the study and the analysis of the characteristic narrative in the Arabic poetry before Islam, and research in aesthetic and functional characteristics depending on the procedural tools modernist. Before starting this study we introduce it by a prelude which addresses the terms and concepts of search as it is fixed in its title from defining the concept of the term poetry and narrative, and the possibility of mixing them in the old Arab discourse poetic from ancient and modern Arab critiques to define the concept of the narrative poem and the poetic story; to show the possibility to achieve the interference between the narrative and poetry. Then, in the first chapter we deal with the appearance of the narrative story in the Arabic poetry before Islam in order to detect the different types of the poetic stories which have various contents appeared in the Arabic poem before Islam. This poetic story related to the poet’s narrative of his own experiences in different events or his past and his present life in his tribe. The second chapter was dedicated to the study of the types of narrative characters contained in the speech poetic narrative in the blog, and how the narrative poet shows and presents it; depending on the classification of «Fillip Hamon». In the third chapter we talk about the study and the analysis of the narrative structure of the poetic stories in the Arabic poem before Islam. Then,
Diplôme :	Doctorat en sciences
En ligne :	../theses/arabe/ALER4159.pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10423

السرد في الشعر العربي قبل الإسلام [texte imprimé] / راضية لرقم, Auteur ; محمد بن زاوي, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2016 . - 857 ورقة. ; 30 سم.
2نسخ موجودة مكتبة المركزية

Langues : Arabe (ara)

Tags :	السرد  الشعر العربي  فترة ما قبل الإسلام  القصة العربية السرد  الشعر  فبل الاسلام  الايقاع  القصص الشعرية
Index. décimale :	810 أدب عربي
Résumé :	This research concerns about the study and the analysis of the characteristic narrative in the Arabic poetry before Islam, and research in aesthetic and functional characteristics depending on the procedural tools modernist. Before starting this study we introduce it by a prelude which addresses the terms and concepts of search as it is fixed in its title from defining the concept of the term poetry and narrative, and the possibility of mixing them in the old Arab discourse poetic from ancient and modern Arab critiques to define the concept of the narrative poem and the poetic story; to show the possibility to achieve the interference between the narrative and poetry. Then, in the first chapter we deal with the appearance of the narrative story in the Arabic poetry before Islam in order to detect the different types of the poetic stories which have various contents appeared in the Arabic poem before Islam. This poetic story related to the poet’s narrative of his own experiences in different events or his past and his present life in his tribe. The second chapter was dedicated to the study of the types of narrative characters contained in the speech poetic narrative in the blog, and how the narrative poet shows and presents it; depending on the classification of «Fillip Hamon». In the third chapter we talk about the study and the analysis of the narrative structure of the poetic stories in the Arabic poem before Islam. Then,
Diplôme :	Doctorat en sciences
En ligne :	../theses/arabe/ALER4159.pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10423

Titre :	Etude de l’elimination des ions Cr(VI) par des procédés physico-chimiques application aux eaux de chromage
Type de document :	texte imprimé
Auteurs :	Imene Chaabna, Auteur ; Chahrazed Boukhalfa- Djebbar, Directeur de thèse
Editeur :	جامعة الإخوة منتوري قسنطينة
Année de publication :	2017
Importance :	172 f.
Format :	30 cm.
Note générale :	2 copies imprimées disponibles
Langues :	Français (fre)
Tags :	Cr(VI)  traitement des eaux  adsorption  échange d’ions  réduction  charbon actif  ferrihydrite  composite (charbon actif/fer)  Amberlite A21  Amberlite IRN78  eaux de chromage  water treatment  ion exchange  reduction  activated carbon  composite (activated carbon/iron)  chrome plating water  "الكروم السداسي  معالجة المیاه  الإدمصاص  التبادل الأیوني  الإرجاع  فحم منشط  فیریدریث  مركب (فحم- حدید )
Index. décimale :	540 Chimie et sciences connexes
Résumé :	The present work focuses on the development of effective, practical and inexpensive physico-chemical processes for the decontamination of water containing Cr (VI) ions. Adsorption removal was carried out using commercial activated charcoal, prepared ferrihydrite and composites (activated carbon/iron) prepared by precipitation of Fe (III) ions in the presence of coal at mass ratios (1/10) and 1/5). These adsorbents are characterized by DRX, ATR-FTIR, BET analysis, thermal analysis and by physicochemical analysis. The ion exchange removal is carried out using the Amberlite A21 resin (weak base type) and the Amberlite IRN78 resin (strong base type). The removal efficiency of Cr (VI) ions by precipitation after reduction is evaluated using ascorbic acid and sodium sulfite as reducing agents and soda and lime as precipitants. In synthetic solutions, macroscopic experiments of Cr (VI) ions removal are carried out in the absence and in the presence of competitives ions in batch and in column (according the case). kinetics, equilibrium and thermodynamics studies are carried out. The binding of Cr (VI) ions by adsorption is also studied through spectroscopic analysis. In chrome-plating waters, removal of Cr (VI) ions by these methods is evaluated as a function of pH The synthesized composites are characterized by the predominance of mesopores. Their specific surfaces are similar to that of ferrihydrite. Increasing the amount of iron involves increasing the content of basic functions and the formation of hematite. The results of macroscopic experiments show that whatever the method used, the maximum elimination of Cr (VI) ions is recorded at acidic pH. The effectiveness of sodium sulfite in reducing Cr (VI) ions decreases rapidly with increasing pH. The increase in temperature implies an increase in the elimination in the case of the resins and a decrease in the case of the adsorbents. The presence of competitive ions implies a decrease in the optimum pH range of the removal and a slowing down of adsorption and exchange processes. The removal efficiency of Cr (VI) ions by ferrihydrite, composites and resins is strongly influenced by the presence of sulfate ions. The spectroscopic analysis (ATR-FTIR) suggest that the mechanism of Cr (VI) uptake by ferrihydrite and composites depends on pH and the presence of competitive ions. At pH <6, Cr (VI) ions form inner-sphere surface complexes. Whatever the pH, the interaction of the Cr (VI) ions is essentially electrostatic in the presence of the competitive ions. In chrome-plating waters, the efficiencies of Cr (VI) removal by the used solids at pH: 3 follow the order: IRN78> CAC> CACFe (1/5)> Ferrihydrite.
Diplôme :	Doctorat
En ligne :	../theses/chimie/CHA7019.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10421

Etude de l’elimination des ions Cr(VI) par des procédés physico-chimiques application aux eaux de chromage [texte imprimé] / Imene Chaabna, Auteur ; Chahrazed Boukhalfa- Djebbar, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2017 . - 172 f. ; 30 cm.
2 copies imprimées disponibles

Langues : Français (fre)

Tags :	Cr(VI)  traitement des eaux  adsorption  échange d’ions  réduction  charbon actif  ferrihydrite  composite (charbon actif/fer)  Amberlite A21  Amberlite IRN78  eaux de chromage  water treatment  ion exchange  reduction  activated carbon  composite (activated carbon/iron)  chrome plating water  "الكروم السداسي  معالجة المیاه  الإدمصاص  التبادل الأیوني  الإرجاع  فحم منشط  فیریدریث  مركب (فحم- حدید )
Index. décimale :	540 Chimie et sciences connexes
Résumé :	The present work focuses on the development of effective, practical and inexpensive physico-chemical processes for the decontamination of water containing Cr (VI) ions. Adsorption removal was carried out using commercial activated charcoal, prepared ferrihydrite and composites (activated carbon/iron) prepared by precipitation of Fe (III) ions in the presence of coal at mass ratios (1/10) and 1/5). These adsorbents are characterized by DRX, ATR-FTIR, BET analysis, thermal analysis and by physicochemical analysis. The ion exchange removal is carried out using the Amberlite A21 resin (weak base type) and the Amberlite IRN78 resin (strong base type). The removal efficiency of Cr (VI) ions by precipitation after reduction is evaluated using ascorbic acid and sodium sulfite as reducing agents and soda and lime as precipitants. In synthetic solutions, macroscopic experiments of Cr (VI) ions removal are carried out in the absence and in the presence of competitives ions in batch and in column (according the case). kinetics, equilibrium and thermodynamics studies are carried out. The binding of Cr (VI) ions by adsorption is also studied through spectroscopic analysis. In chrome-plating waters, removal of Cr (VI) ions by these methods is evaluated as a function of pH The synthesized composites are characterized by the predominance of mesopores. Their specific surfaces are similar to that of ferrihydrite. Increasing the amount of iron involves increasing the content of basic functions and the formation of hematite. The results of macroscopic experiments show that whatever the method used, the maximum elimination of Cr (VI) ions is recorded at acidic pH. The effectiveness of sodium sulfite in reducing Cr (VI) ions decreases rapidly with increasing pH. The increase in temperature implies an increase in the elimination in the case of the resins and a decrease in the case of the adsorbents. The presence of competitive ions implies a decrease in the optimum pH range of the removal and a slowing down of adsorption and exchange processes. The removal efficiency of Cr (VI) ions by ferrihydrite, composites and resins is strongly influenced by the presence of sulfate ions. The spectroscopic analysis (ATR-FTIR) suggest that the mechanism of Cr (VI) uptake by ferrihydrite and composites depends on pH and the presence of competitive ions. At pH <6, Cr (VI) ions form inner-sphere surface complexes. Whatever the pH, the interaction of the Cr (VI) ions is essentially electrostatic in the presence of the competitive ions. In chrome-plating waters, the efficiencies of Cr (VI) removal by the used solids at pH: 3 follow the order: IRN78> CAC> CACFe (1/5)> Ferrihydrite.
Diplôme :	Doctorat
En ligne :	../theses/chimie/CHA7019.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10421

Titre :	العتباتُ النصيّة في الرواية الجزائرية
Type de document :	texte imprimé
Auteurs :	فريد حليمي, Auteur ; عليمة قادري, Directeur de thèse
Editeur :	جامعة الإخوة منتوري قسنطينة
Année de publication :	2016
Importance :	310 ورقة.
Format :	30 سم.
Note générale :	2نسخ موجودة مكتبة المركزية
Langues :	Arabe (ara)
Tags :	العتبة النصیة  النص  النص الموازي  الشعریة  النص الفوقي  النص المصاحب  Texte Seuil  texte  texte parallèle  la poésie  le texte épitaxiale  texte d'accompagnement  Text Threshold  text  parallel text  poetry  epitaxial text  accompanying text
Index. décimale :	810 أدب عربي
Résumé :	Speech text thresholds to benefit from the evolution of poetic concept in Almapad studies filial where Skip the text look Abannoyen who EXCLUDED HIM for any context or overlapping text, bringing to the text so the throes of a number of texts that complemented and fed and decorated and surrounded by Vthieddih while give it deliberative dimension and do while linking various contexts abroad text that we all contribute to the industry 'these texts that govern relations and posed mechanisms of semantic represent creative game that requires effective literacy comes not only run the interpretation and decoding mechanisms. Therefore, the way to realize this trend is the feeding of poetic speech to reach this oriented developmental concept of the text as aware of all the main points and details and it turned to look critics heralded the birth of a new critical approach in the approach to the text and read it because the throes of the text has become the product of a series of curved elements around it constitute a space textual references to a set of parallel texts stimulate tenderloin and it is surrounded by surrounding text and instant texts ranging from the creator and publisher. It is this difference functions and roles in relation to the text which makes poetic haven to the chosen creative and realistic process to the chosen publisher and darkness Mahzawrha to err reader in its
Diplôme :	Doctorat en sciences
En ligne :	../theses/arabe/AHEL4158.pdf
Format de la ressource électronique :	pdf
Permalink :	https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10420

العتباتُ النصيّة في الرواية الجزائرية [texte imprimé] / فريد حليمي, Auteur ; عليمة قادري, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2016 . - 310 ورقة. ; 30 سم.
2نسخ موجودة مكتبة المركزية

Langues : Arabe (ara)

Tags :	العتبة النصیة  النص  النص الموازي  الشعریة  النص الفوقي  النص المصاحب  Texte Seuil  texte  texte parallèle  la poésie  le texte épitaxiale  texte d'accompagnement  Text Threshold  text  parallel text  poetry  epitaxial text  accompanying text
Index. décimale :	810 أدب عربي
Résumé :	Speech text thresholds to benefit from the evolution of poetic concept in Almapad studies filial where Skip the text look Abannoyen who EXCLUDED HIM for any context or overlapping text, bringing to the text so the throes of a number of texts that complemented and fed and decorated and surrounded by Vthieddih while give it deliberative dimension and do while linking various contexts abroad text that we all contribute to the industry 'these texts that govern relations and posed mechanisms of semantic represent creative game that requires effective literacy comes not only run the interpretation and decoding mechanisms. Therefore, the way to realize this trend is the feeding of poetic speech to reach this oriented developmental concept of the text as aware of all the main points and details and it turned to look critics heralded the birth of a new critical approach in the approach to the text and read it because the throes of the text has become the product of a series of curved elements around it constitute a space textual references to a set of parallel texts stimulate tenderloin and it is surrounded by surrounding text and instant texts ranging from the creator and publisher. It is this difference functions and roles in relation to the text which makes poetic haven to the chosen creative and realistic process to the chosen publisher and darkness Mahzawrha to err reader in its
Diplôme :	Doctorat en sciences
En ligne :	../theses/arabe/AHEL4158.pdf
Format de la ressource électronique :	pdf
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