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    Article original Incidence du streptocoque du groupe b (sgb) chez les nouveau-nés nés à Constantine (Algérie) et dans deux de ses banlieues. Intérêt de la détermination des sérotypesIncidence of group b streptococcus (gbs) in neonates born in Constantine (Algeria) and two of its suburbs usefullness of serotyping
    (elsevier, 2003-08) M. A. HAMIDECHI
    Aim. – Group B Streptococcus (GBS) is the germ most often responsible for neonatal infections. Several risk factors are described. The objective of this investigation was to demonstrate the effects of age, sex, and place of birth in neonates GBS infection, including serotype distribution. Method. – A 4 years-long multicentric study was carried out in Constantine and 2 of its suburbs, including 8,711 live neonates. Seven hundred and thirty-three suspected infections were recorded and sorted according to postnatal age (≤ 7 days and > 7 days), sex, and place of birth (related to the mothers’ socioprofessional status). Thirty-one cases of GBS infection were confirmed. Results. – GBS was identified in 53 out of 733 suspected cases of infection (i.e.: 7.2% or 1/14 suspected case). The incidence of early GBS infection was greater than late onset (36 vs 17 out of 53 cases). GBS colonization was not related to age. High socioprofessional status decreased the infection risk significantly in neonates. Conclusion. – This study demonstrates that favorable hygiene and the mother’s high socioprofessional status decrease the risk of neonatal GBS infection
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    Présence de Dasypoda maura Perez, 1895, en Algérie (Hym., Apoidea, Melittidae)
    (researchgate, 2007-01) Maghni Noudjoud
    Les Hyménoptères Melittidae, notamment ceux du genre Dasypoda Latreille, 1802, sont très répandus dans la région paléarctique. Cependant, les travaux se rapportant à l’Algérie et qui datent de la première moitié du 20e siècle mentionnent uniquement la présence de 6 espèces : Dasypoda brevicornis (Rossi, 1791), D. hirtipes (Fabricius, 1793), D. plumipes (Panzer, 1797), D. cingulata Erichson, 1835, D. sinuata Pérez, 1855 et D. oraniensis Perez, 1895 (SAUNDERS, 1901, 1908 ; ALFKEN, 1914 ; BENOIST, 1924, 1961 ; MORICE, 1916 ; ROTH, 1923, 1924 ; SCHULTHESS, 1924). Dans les travaux les plus récents, LOUADI & DOUMANDJI (1998 a et b) ont noté l’absence des Melittidae dans la région de Constantine. En 2003, MATALLAH relève dans la région de Skikda (36°53’ N, 6°55’ E, 42 m) la présence de Dasypoda visnaga Rossi, 1790, qui présente une distribution méditerranéenne. Au cours de nos prospections menées du 3 juin au 17 juillet 2005 dans la wilaya de Khenchela, plus exactement au mont Chelia à 2176 m (35°20’ N et 60°39’ E, nous avons récolté 24 spécimens de D. maura Perez, 1895, qui n’était connue jusqu’à présent que du Maroc (MICHEZ et al., 2004 a, b). Cette espèce fréquentait deux plantes spontanées de la famille des Asteraceae (Sylibum marianum L., 6 spécimens, et Echinops spinosus L., 18 spécimens). Cette présence au mont Chelia montre sans aucun doute que cette espèce nouvelle pour l’Algérie a une répartition plus large. D’autres investigations en cours dans des régions limitrophes nous renseigneraient certainement davantage sur sa distribution géographique.
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    Les Hyménoptères Apoidea de l’Algérie orientale avec une liste d'espèces et comparaison avec les faunes ouest-paléarctiques
    (researchgate, 2008-01) Noudjoud MAGHNI
    Hymenoptera Apoidea of eastern Algeria and comparison with western Palaearctic fauna. Our own investigations in North Eastern Algeria and data from other authors revealed the presence of 382 species of Bees belonging to 55 genera.These species were distributed into six families: Colletidae (2 genera, 25 species), Melittidae (3 genera, 9 species), Halictidae (8 genera, 60 species), Andrenidae (5 genera, 77 species), Apidae (17 genera, 111 species) and Megachilidae (20 genera, 100 species). Compared to the west Palaearctic fauna, long tongued Bees were more represented with 211 species against 171 for those with a short tongue in Algeria. In West Palaearctic the short tongued Bees constituted the majority: 253 species in Baden-Wurtenberg (Germany) against 137 long tongued species. There is a greater number of Megachilini and Osmiini (Megachilidae) in Algeria whereas in Western Europe, Bumblebees of the genus Bombus (Bombini, Apidae) are the most diverse.
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    Etude microbiologique au niveau d'une station d'Epuration "Step Timgad"
    (Abbes Laghrour University- Khenchela, 2010) Abdessemed, Zineb
    Water is self-purified by activated sludge process which makes its uniqueness. The main goal of this thesis is the microbiological and physico-chemical study of the input and output water of the wastewater treatment system plant Timgad. 89.47% of the identified biocenosis belongs to ɤ- Proteobacteria while the remaining 10.52% is equally divided between α- Proteobacteria and β- Proteobacteria. The antibiotics susceptibility profiles reveal that over 30% are wild strains while the penicillinases are often present (11.30-20%) with also other profils. The excess of oxygyen injected prevents last denitrification step but the physico-chemical quality of treated water is good for all tested parameter. L’eau est une substance unique parce qu’elle s’auto-épure par le processus de boues activées. L’objectif principal de ce mémoire est l’étude microbiologique et physico-chimique des eaux en amont et en aval dans la station d’épuration de Timgad. Il s’est avéré que 89.47% de la biocénose microbienne identifiée appartient aux ɤ- Proteobacteria, alors que α- Proteobacteria et β- Proteobacteria sont à égalité avec 5.26%. Les profils d’antibiogrammes dévoilent que les souches sauvages ont eu des pourcentages supérieurs à 30%, les bactéries pénicillinases sont souvent présente [11,30-20%] ainsi que d’autres profils. L’excès de l’oxygène injecté empêche la dernière étape de dénitrification, mais la qualité physico-chimique des eaux traitées a était bonne pour touts les paramètres analysés.
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    Étude du profil épidémiologique et des facteurs de risque alimentaires du cancer du nasopharynx dans le Nord-Est algérien
    (springer, 2010-12-06) BENDJEMANA KATIA
    Nasopharyngeal carcinoma (NPC) is one of the most important cancers in Algeria with 8 to 12 cases/ 100,000 persons a year. The pathogenesis of NPC is not clear. In Algeria and Tunisia, it represents the first most common cancer of the larynx in women and the second most common tumor inmen. This is a retrospective epidemiological study of the NPC in the North-East of Algeria and evaluates the impact of the consumption of some foods, tobacco and alcohol on the risk of development of NPC. The study of a group of 160 patients affected by NPC, using 205 people as a control group, has shown that this cancer was predominant in men, particularly in the population between 40- and 59-years-old. The analysis has shown that preservatives such askhliiseem to be a statistically significant factor related to NPC. Our results also show a strong association between alcohol consumption and tobacco use and the risk of developing NPC. However, we did not find a statistically significant relationship with other food factors. Résumé Le carcinome du nasopharynx (CNP) représente un des cancers les plus importants dans notre pays, avec une incidence moyenne de 8 à 12 cas/100 000 habitants par an. Il représente en Algérie et en Tunisie le premier cancer des voies aérodigestives chez la femme et le deuxième après le cancer du larynx chez l’homme. L’étiologie de ce cancer incrimine trois types de facteurs: le facteur viral, les facteurs génétiques et environnementaux, notamment alimentaires et tabagiques. Le but de notre travail rétrospectif est d’évaluer le profil épidémiologique du cancer du nasopharynx au niveau des régions de Khenchela et de Batna et leurs environs et d’identifier les aliments à risque pour le CNP. L’étude a concerné 160 patients ayant un CNP de type UCNT (undifferentiated carcinoma of nasopharyngeal type) recensés dans les régions et 205 témoins appariés aux malades selon l’âge, le sexe et la région géographique. Les résultats montrent que ce cancer prédominait particulièrement chez les hommes, avec une forte incidence pour la tranche d’âge de 40 à 60 ans. L’analyse des facteurs alimentaires et tabagiques montre un risque élevé de CNP lié significativement à la consommation de produits de conservation traditionnelle tels que le khlii et les saumures. Nos résultats montrent aussi une forte association entre la consommation d’alcool et de tabac et le risque de développement du CNP. Cependant, cette association n’a pas pu être démontrée pour le reste des aliments faisant l’objet de notre étude.
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    La dynamique agricole dans la zone d'El Ghrous (Biskra) : entre le boom maraîcher et la lente généralisation des systèmes de production phoenicicoles
    (2011) Laiche Aouidane
    In the current study we investigate the farming system development in the region of El Ghrous (Biskra), through evolution trend of three identified farm kinds (palm, truck farming, and mixed). The result show that the evolution of the old farms began with a partial occupation of land by the date palm followed by an introduction and extension Plasticulture then became a holding palm where other crops are marginalized. The truck farming system production in the region is profitable and has been widespread, but remains cyclical and tends to be replaced by the mixed systems (phoeniculture –gardening) to become a purpose – palm.
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    Contribution à l'étude d'un agent microbien auto-épurateur de l'eau isolée d'un écosystème aquatique continental de la région de khenchela
    (Abbes Laghrour University- Khenchela, 2011) Merradi, Manel
    L’eau comme tout autre élément dans la nature est un bon serviteur de l’homme mais celui-ci n’est pas un bon maître par ses extensions urbaines et ses déchets biologiques, il provoque une pollution microbienne de cette source précieuse de vie. Le volume d’eau potable et pure devient de plus en plus insuffisant et ne couvre pas les besoins vitaux. En effet, l’eau est dotée d’un pouvoir auto-épurateur naturel qui maintient l’équilibre écologique. Cette capacité d’autoépuration de l’eau est l’œuvre des microorganismes. L’évaluation de la qualité physicochimique et bactériologique était l’objectif de notre étude réalisée sur les eaux usées de la station d’épuration de la wilaya de Khenchela ainsi la contribution à isoler un agent microbien autoépurateur (Bdellovibrio bacteriovorus) de ces eaux. Le dénombrement des germes indicateurs de contamination microbienne exprime leur présence avec un grand pourcentage et indique une contamination fécale d’origine humaine. L’isolement de bactéries présentes dans ces eaux nous a permis de trouver des bactéries à Gram négatif comme Escherichia coli, Aeromonas hydrophila, Klebsiella pneumoniae, Pantoea spp et Pseudomonas aeruginosa ainsi que des bactéries à Gram positif comme Staphylococcus epidermidis. Bdellovibrio bacteriovorus n’a pas été isolée de ces eaux et donc on n’a pas pu étudier son pouvoir lytique envers Escherichia coli isolée.
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    Some Physiological and Biochemical Effects of NaCl Salinity on Durum Wheat (Triticum durum Desf.)
    (Advances in Biological Research, 2011) Azzedine Fercha
    Abstract: The main objective of this study was to examine the effects of NaCl on the leaf growth and some physiological and biochemical characteristics of an Algerian durum wheat (var. Waha) landrace. NaCl (150 mM),as compared to control plants, significantly reduced all the leaf-growth parameters as leaf area (33%), leaf dry weight (41%) and leaf fresh weight (32%), but did not induce any change in the leaf succulence and, consequently, in the leaf RWC. On the other hand, NaCl salinity induced the accumulation of proline (2.25 fold, P<0.05) and soluble sugars (60%, P<0.01) in the leaves of durum wheat seedlings. However, while photosynthetic pigments content do not undergo important change, total carotenoids content decreased (14%) under salt stress conditions. NaCl treatment enhanced significantly the accumulation of H2O2 (4.0-fold, P<0.01) and led to lipid peroxidation. All of these parameters and the interaction among them were analyzed usingANOVA and multiple correlation analysis. The importance of the interactions between osmolytes andantioxidants in determining the salt tolerance of durum wheat was discussed.
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    Incidence de Listeria spp. et autres bactéries psychrotrophes dans le lait cru bovin dans le Nord Est Algérien
    (researchgate, 2011-01) M. A. HAMIDECHI
    In this study a total of 104 milk samples collected from 60 dairy cattle in six farms in the North East part of Algeria were examined for the presence of Listeria spp. and other psychrotrophic bacteria. The isolation was accomplished by cold storage of milk samples followed by plating on blood agar added of Cefazoline. The isolates were identified phenotypicaly by studying cultural, morphological, biochemical criteria; and genotypicaly using the 16S rRNA gene. Psychrotrophic bacteria from numerous genera have been isolated, both gram negative “Acinetobacter spp., Aeromonas spp., Pseudomonas spp., Stenotrophomonas spp., Proteus spp., Yersinia spp., Klebsiella spp., Alcaligenes spp., and Flavobacterium spp.” and gram positive “Enterococcus spp., Listeria spp., Staphylococcus spp., and Bacillus spp.”. Enterococcus spp. was the dominant genera in different seasons. Milk contamination by Listeria spp. was seasonal, its incidence was positive in winter and in spring, however it was absent in summer and autumn.
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    IMPROVEMENT OF SALT TOLERANCE IN DURUM WHEAT BY ASCORBIC ACID APPLICATION
    (Journal of Stress Physiology & Biochemistry, 2011-01-07) Azzedine Fercha
    The main objective of this study is to examine whether exogenously applied Ascorbic acid (AsA) may enhance the salt tolerance in durum wheat (Triticum durum Desf. var. Waha). Two weeks old seedling, grown in plastic pots of 1kg, were subjected to salt stress by adding 25ml of NaCl (150mm), and treated or not with the addition of ascorbic acid (0.7 mM). Two weeks after salt stress, plants were harvested and the various measures were recorded. The effects of salt stress, in the presence and absence of vitamin C, on the leaf growth, leaf area (LA) and some physiological and biochemical changes were investigated. It was established that the application of vitamin C mitigate to variable extent the adverse effect of salt stress on plant growth, may be due, in part, to increased leaf area, improved chlorophyll and carotenoid contents, enhanced proline accumulation and decreased H2O2 content. In conclusion, we can say that treatment with ascorbic acid improve salt tolerance in durum wheat through the enhancement of multiple processes.
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    CONTRIBUTION DU DIAGNOSTIC BIOCHIMIQUE BACTERIEN DANS L’ETABLISSEMENT DES PARENTES PHYLOGENETIQUES : CAS DES Enterobacteriaceae ET Pseudomonas sp
    (Sciences& Technologie, 2011-12) M. A. HAMIDECHI
    Ten bacterial strains were isolated from clinical samples provided by the bacteriology laboratory (Daksi, Constantine). Among the ten strains studied, eight belong to the Enterobacteriaceae and two are among the Pseudomonadaceae. These strains were presumptively identified by their biochemical characteristics, susceptibility or resistance to antibiotics, and total nitrogen measured by the Kjeldahl method. A phylogenetic profile was produced by phenetic methods based on the calculation of genetic distances using the Neighbor Joining algorithm (NJ) and bioinformatics analysis of 16S rRNA sequences to compare the two phylogenies (phenotypic and genotypic). The analysis of topologies obtained showed that the biochemical phenotype has some limitations in bacterial identification and sequence analysis of 16S rRNA is a key tool in bacterial identification across the case.
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    Impact des rejets de la station d'épuration d'ElManchar sur la qualité des eaux souterraines (wilaya de Khenchela , Nord Est Algerien)
    (Abbes Laghrour University- Khenchela , 2012) Nedjar, Yamama*
    This work aims to assess the degree of contamination of groundwater in the area drained by the treated wastewater from the sewage treatment plant with activated sludge of the city of Khenchela in physicochemical elements and the indicator elements of pollution. In a first step, we performed a physicochemical analysis of samples monthly water discharge of the sewage treatment plant. The second step is intended for the analysis the groundwater of 17 water points distributed over the study area, two of which are selected like witness for reason of his distance of the zone drained by the discharges. In light of the results obtained, the treated wastewater, with the exception of biochemical demand for oxygen BOD5 and total suspended matter levels and the salinity which present important contents, are suitable for reuse in irrigation. The diagnostic quality of treated effluent shows that the original domestic and the contamination by metallic elements is not a significant threat, continuation the accumulation of the latter in sludge. The results of analyses of groundwaters clearly show a considerable accumulation of chlorides, sulphates, calcium, ammonium and out of manganese whereas zinc, copper and iron record values which do not exceed the drinking water standards. A deterioration of the quality of water was very remarkable meadows of the sewage treatment plant and downstream in the direction of flow of the tablecloth what shows the infiltration of water of rejection towards the tablecloth. The analysis of the principal components enabled us to make a distinction between two water classes, first is characterized by a low salinity and free from undesirable elements, whereas the second is strongly mineralized and polluted. That is due to the contributions of treated waste waters.
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    Evaluation microbiologique et physicochimique de l’eau du barrage de Timgad (wilaya de Batna).  Président : Darbouche Abdelhak (Prof.) Université de Khenchela  Encadreur: Houhamdi Moussa. (Prof.) Université de Guelma
    (Abbes Laghrour university -khenchela, 2012) Smail, Hizia
    In order To determine the microbiological and physic-chemical of water quality of Timgad Dam used for irrigation perimeters and the production of drinking water for the city of Banta, analyzes were made during the year 2011 and that have made mainly on the quantification of indicator bacterial contamination fecal and the search for pathogens and the determination of the concentration ofcertain physic-chemical elements in these waters. The results of chemical analysis, have shown that the variation in element concentration is closely related to several factors (rainfall, geological substrate, human activities), but these levels are still low to cause organic pollution. except that the nitrite concentration exceeds the standard set by World Health Organization (WHO) during the month of July. While the results of microbiological analysis we expose a slight fecal contamination of waters identified by the presence of fecal bacteria, as well as the presence of other bacteria responsible for infections transmitted by water, mainly caused by discharges from wastewater which are for infections probably a threat to the people and the environment.
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    Caractérisation de l’hépatite virale C. Prise en charge diagnostique et thérapeutique à Khenchela
    (Université Abbes Laghrour -Khenchela-, 2012) Benhacene Yasmina; Boukerkar Rabia; Encadreur: DEROUICHE.F
    Hepatitis C is an infectious disease caused by the hepatitis C virus (HCV) which infects the liver, The infection is often asymptomatic and is characterized by inflammation of the liver (hepatitis), but can progress to chronic hepatitis and later cirrhosis and liver cancer. This study shows the characteristics of viral hepatitis C screening and possible treatment of this disease at the hospital of Khenchela. We have demonstrated that genotype 1b (99%) is the most common in this population, but genotypes 2 and 3 are less frequent (1%). To our knowledge, this genetic variability is not mentioned in the bibliography. Among the 100 cases recorded and treated between 2008 and 2011, we found that women (2/3) are more infected than men (1/3). This infection affects different ages, with a peak at 38% the age of 60. Cirrhosis also increases with age between 40 to 70 years and it is chronic in 72% of cases. Carcinoma increases with age from 50 years and it is higher than 70 years and also very much related to cirrhosis لتهاب الكبد C هو أحد الأمراض المعدية التي يسببها فيروس التهاب الكبد HCV) C)، الذي يصيب الكبد. العدوى غالبا ما تكون بدون أعراض ويتميز التهاب في الكبد التهاب الكبد ، ولكن يمكن أن يتطور إلى التهاب الكبد المزمن وتليف الكبد وسرطان الكبد. هذه الدراسة تبين خصائص التهاب الكبد الفيروسي C الفحص والعلاج الممكن لهذا المرض في مستشفى خنشلة. لقد بينا أن النمط الوراثي B1 (%99) هو الأكثر شيوعا في هذه الفئة من السكان، ولكن الأنماط الجينية 2 و 3 نادرة(1). بحسب علمنا، لم يتم ذكر هذا التباين الوراثي في المراجع. بين 100 حالة مسجلة ومعالجة بين عامي 2008 و 2011، وجدنا أن النساء (3/2) هن أكثر إصابة من الرجال .(3/1). هذه العدوى تصيب مختلف الأعمار، و بدرجة قصوى38% عند سن 60. تليف الكبد يزيد أيضا مع التقدم في السن ما بين 40 إلى 70 سنة و المزمن في %72% من الحالات سرطان الكبد يزيد مع وأيضا يرتبط بحد كبير مع تليف التقدم في السن من 50الى 70 عاما الكبد.
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    Etude in vitro de l'effet antibactérien des associations d'antibiotiques
    (Abbes Laghrour University- Khenchela , 2012) Hamames, Mokhtar
    n order to evaluate the phenomena of bacterial resistance to antibiotics in aquatic ecosystems, particularly in surface waters, it was interested to study Sebkhet Ouled M’barek of the City of Khenchela, a water plan exposed to microbial pollution of fecal origin. In our study, we have begun by estimating the microbiological quality of water using different research methods and enumeration of test germs of fecal contamination. The results showed a significant microbial pollution of our study area. Seven bacterial species were identified: Escherichia coli, Aeromonas hydrophila, Methylobacterium mesophilicum, Shewanella putrefaciens, Comamonas testosteroni, Staphylococcus epidermidis and Enterococcus faecium. The study of antibiotic resistance showed, for E.coli, acquired resistance to Ampicillin and Ticarcillin (by a low- level penicillinase) and to Chloramphenicol (by chloramphenicol acetyltransferase). A. Hydrophila and the three other non- fermenting bacilli have a wild-type resistance. S. epidermidis has acquired resistance to penicillin (by penicillinase plasmid), Oxacillin and Erytromycin (by efflux mechanism). E. faecium have a wild-type resistance. The study of the association of antibiotics on A. Hydrophila showed greater synergy between colistin and cefotaxim. The technique of the chessboard allowed us to reveal, to these two antibiotics, the lowest concentration giving a better effect on the growth of this species. They amount respectively 166.5 and 6.25 µg / ml.
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    Apport et distribution des nutriments dans le bassin versant Seybouse à la mer
    (Université Abbes Laghrour -Khenchela-, 2012) Zouaoui Sara; Nemer Hadda
    Seybouse river drains one of the main watershed basins of the country (6500 km ) with a strong climatic hydrographic network. On this basin exerted significant anthropogenic activities from the number of inhabitant (2 million inhabitants) that grow quickly. In order to cover the drainage basin of Seybouse, six stations were sampled during our study of the winter period. For a better understanding of the chemical conditions reigning the basin, the stations are positioned according to strategic points: upstream and downstream of dams in the confines of the basin, the ultimate crossroads mouth of by-products of anthropogenic activities. What we retained from this study is the important capture of Silicon at the level of dams which will necessarily impact the coastline receiving. It should also be noted the dominance of the organic fraction of phosphorus (POD) compared to that of nitrogen which form as 17% of dissolved nitrogen. Paradoxically, in terms of nitrogen and phosphorus dissolved with a ratio of 8 deviates widely to the Redfieled report. However as Silicon is a reduction in the mouth with a report full of Si/N = 1.
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    CLASSIFICATION GEOCHIMIQUE DES EAUX DU LAC DU BARRAGE DE BABAR – KHENCHELA-
    (Université Abbes Laghrour -Khenchela-, 2012) DJEBAILI Narimene; HEZIL Sorya
    The hydrological and hydrogeochemical study of the catchment area of Wadi El Arab and the dam Babar, enabled us to have an outline on the qualitative state of the water reserve of the region. The hydrological study shows that the zone of study is characterized by a semi arid climate, with a very weak flow on the catchment area of Wadi El Arab , which translates conditions of food and very unfavorable flow in particular a strong evaporation. The hydrogeochemical study of water of the stopping shows that the evolution of the chemical elements according to time emphasizes that strong calcium and sulphate concentrations are dependent the presence of evaporitic or saliferous formations like the gypsum.
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    Elimination des phosphates par procédé biologique des eaux usées de la région de Khenchela
    (Abbes Laghrour University- Khenchela, 2012) Benammar, Leyla
    This study comes within the framework of a PNR project for the development of new sensors applied to the control and analysis of chemical pollutants in water, allowed to evaluate the removal of phosphate from wastewater by a mixed culture isolated from activated sludge of sewage wastewater from the City of Khenchela. The isolation and identification of dominant strains responsible for phosphate removal are performed in parallel. We are also interested in studying and comparing the ability of different isolates strains to remove phosphate. Evaluation of phosphate removal is achieved by the determination of phosphate by colorimetric method with ascorbic acid. The isolation of dominant strains is performed on a minimal medium agar. Identification of bacterial strains was performed using the system API20 NE-bioMérieux. This work shows the ability of the microbiota of activated sludge to remove phosphate, with rates proportional to the initial concentration of carbon source. It was found that a concentration of 5000 mg.L -1 of sodium acetate gave a better yield of phosphate removal reaches 99.23%, with an average speed of accumulation of 0.19 mg.L .The concentration of phosphate obtained after treatment is 0.13 mg.L -1 , reflecting a satisfactory treatment sight that the phosphate concentration is known as polluting beyond 1 mg.L The study of the influence of various sources of carbon on the biological phosphorus removal by mixed culture shows that the volatile fatty-acids with short chains such as acetate and lactate are the substrates most favorable to the process. The research of the dominant micro-organisms implied in this process allowed the isolation of eight bacterial species identified as being Pseudomonas aeruginosa, Moraxella lacunata, Acinetobacter junii, Alcaligenes denitrificans, Sphingobacterium spiritivorum Aeromonas hydrophila, Acinetobacter calcoaceticus, and Sphingomonas paucimobilis. It emerges that the best rate of phosphate removal by pure culture is observed with Acinetobater junii with a rate of 76.72%, followed by Alcaligenes denitrificans with 70.42% and Pseudomonas aeruginosa with a rate of about 61.78 %, followed finally by Moraxella lacunata with 50.6%.
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    Caractérisation de l’hépatite virale C. Prise en charge diagnostique et thérapeutique à Khenchela
    (Université Abbes Laghrour -Khenchela-, 2012) Benhacene Yasmina; Boukerkar Rabia; Encadreur: DEROUICHE.F
    Abstract Hepatitis C is an infectious disease caused by the hepatitis C virus (HCV) which infects the liver, The infection is often asymptomatic and is characterized by inflammation of the liver (hepatitis), but can progress to chronic hepatitis and later cirrhosis and liver cancer. This study shows the characteristics of viral hepatitis C screening and possible treatment of this disease at the hospital of Khenchela. We have demonstrated that genotype 1b (99%) is the most common in this population, but genotypes 2 and 3 are less frequent (1%). To our knowledge, this genetic variability is not mentioned in the bibliography. Among the 100 cases recorded and treated between 2008 and 2011, we found that women (2/3) are more infected than men (1/3). This infection affects different ages, with a peak at 38% the age of 60. Cirrhosis also increases with age between 40 to 70 years and it is chronic in 72% of cases. Carcinoma increases with age from 50 years and it is higher than 70 years and also very much related to cirrhosis لتهاب الكبد C هو أحد الأمراض المعدية التي يسببها فيروس التهاب الكبد HCV) C)، الذي يصيب الكبد. العدوى غالبا ما تكون بدون أعراض ويتميز التهاب في الكبد التهاب الكبد ، ولكن يمكن أن يتطور إلى التهاب الكبد المزمن وتليف الكبد وسرطان الكبد. هذه الدراسة تبين خصائص التهاب الكبد الفيروسي C الفحص والعلاج الممكن لهذا المرض في مستشفى خنشلة. لقد بينا أن النمط الوراثي B1 (%99) هو الأكثر شيوعا في هذه الفئة من السكان، ولكن الأنماط الجينية 2 و 3 نادرة(1). بحسب علمنا، لم يتم ذكر هذا التباين الوراثي في المراجع. بين 100 حالة مسجلة ومعالجة بين عامي 2008 و 2011، وجدنا أن النساء (3/2) هن أكثر إصابة من الرجال .(3/1). هذه العدوى تصيب مختلف الأعمار، و بدرجة قصوى38% عند سن 60. تليف الكبد يزيد أيضا مع التقدم في السن ما بين 40 إلى 70 سنة و المزمن في %72% من الحالات سرطان الكبد يزيد مع وأيضا يرتبط بحد كبير مع تليف التقدم في السن من 50الى 70 عاما الكبد.
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    L'influence des paramètres climatiques sur la qualité des eaux superficielles du bassin versant de Foum El Gueiss
    (Université Abbes Laghrour -Khenchela-, 2012) Bouali Mohamed
    Le bassin versant de Foum El Gueiss se situe à Nord-Est d’Algérie, Ce bassin possède actuellement des ressources hydriques souterraines et superficielles, l'utilisations des eaux du barrage de Foum El Gueiss sont beaucoup plus pour l’irrigation L’objectif de ce thème de recherche est l’étude de l’influence temporaire des paramètres climatologiques sur la qualité physico-chimique des eaux à l’irrigation Les formations d’âge quaternaire se répartissent en totalité dans le bassin versant avec la présence des alluvions récentes constituent par des sables, des graviers et des limons gris La région d’étude est soumise à un climat semi-aride, elle est caractérisée par un printemps pluvieux et un été chaud et sec La qualité chimique de l’eau est bonne à période de (mars, avril, mai, juin, novembre) avec 41.66%, et admissible à période de (janvier, février, juillet, aoûte, septembre, octobre, décembre) avec 58.44 %, résultant d’une faible salinité influencé par la lithologie de la région et les facteurs climatiques (Précipitations et températures), donc les eaux de barrage de Foum El Gueiss conviennent à l’irrigation. En fin les résultats de cette étude rependent aux questions évoquées dans la problématique de départ الملخص يقع حوض فم القيس في الشمال الشرقي الجزائري هذا الحوض مزود حاليا بمصادر مياه جوفية و كذا سطحية والمتمثلة أساسا في سد فم القيس أغلب استعمالات مياه هذا السد تستغل في النشاط الزراعي (الري) الغاية من هذا البحث هو دراسة التأثير الشهري للعوامل المناخية على النوعية الكيمائية والفيزيائية لمياه هذا السد وكذا مدى صلاحيتها للري يتميز حوض فم القيس جيولوجيا من الطي الرملي الحصوي مع بعض الطبقات الصلصالية المتوزعة داخل الحوض المنطقة المدروسة يسودها مناخ شبه جاف يتميز بربيع ممطر وصيف حار وجاف نوعية المياه جيدة في الأشهر (مارس أفريل ماي، جوان ونوفمبر) بنسبة 41.66%، ومقبولة في الأشهر (جانفي، فيفري، جويلية، أوت، سبتمبر، أكتوبرو (ديسمبر) بنسبة 58.44% وذلك لقلة ملوحتها من جهة نوعية الصخور وكذا لعوامل مناخية ( درجة الحرارة والتساقط ومنه فإن مياه سد فم القيس صالحة للري وفي الأخير نشير إلى أن النتائج المحصل عليها أجابت على إشكالية موضوع البحث