Production Scientifique de l'Université des Sciences et de la Technologie Houari Boumediene Alger

Auteurs Titre Résumé Téléchargement
01 Farid B. Belaribi,
Ghénima Boukais-Belaribi,
Amir H. Mohammadi,
and Dominique Richon
Excess Molar Enthalpies for the Binary and Ternary Mixtures of Cyclohexane,
Tetrahydropyran, and Piperidine at 308.15 K and Atmospheric Pressure:
Experimental Measurements and Correlations
Excess molar enthalpies for the binary and ternary mixtures of cyclohexane, tetrahydropyran, and piperidine
have been measured using a Calvet microcalorimeter at 308.15 K and atmospheric pressure. All of the binary
and ternary systems show endothermic behavior. The experimental binary results are correlated using the
Redlich-Kister equation. The excess molar enthalpies for the ternary mixture are correlated using the Cibulka
equation. The capability of an artificial neural network algorithm to model these data is finally studied.
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02 Z.OUDJEBOUR, EM.BERKOUK, N.SAMI, S.BELGASMI, S. AREZKI, I. MESSAIF
Indirect space vector control of a double star induction
machine fed by two five-levels NPC VSI
This paperis a contribution to control and
feedof thedoublestatorinduction machine (DSIM).In
the first part, wedevelop a model of this machine by
using a Park transformation. Then, wepresent a five -levels NPC VSI that will feedthis machine. For that,
wedevelop a knowledgemodel of this inverter by
using ...
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03 Nabila Haddadine-Rahmouna,
Farouk Amrani,
Valeria Arrighi,
John M.G. Cowie
Interpolymer complexation and thermal behaviour of poly(styrene-co-maleic
acid)/poly(vinyl pyrrolidone) mixtures
Polymer complexation between poly(styrene-co-maleic acid), (SMA28) and (SMA50) containing 28 and
50 mol% of maleic acid and poly(vinyl pyrrolidone) (PVP), has been investigated by differential scanning
calorimeter (DSC), Fourier-transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA).
All results showed that the ideal complex composition of SMA28/PVP and SMA50/PVP leads, respectively,
to 2:1 and 1:1 mole ratio of interacting components.
For the investigated systems, theTgversus composition curve does not follow any of the usual proposed...
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04 Mehdi Bourouba
, Assia Benyelles-Boufennara
, Nadia Terki
, Esma Baraka-Kerboua
, Kamel
Bouzid
, Chafia Touil-Boukoffa
Epidermal growth factor receptor (EGFR) abundance
correlates with p53 and Bcl-2 accumulation and patient age
in a small cohort of North African nasopharyngeal carcinoma
patients
In North Africa, nasopharyngeal carcinoma (NPC) is characterized by a bimodal distribution involving a juvenile (≤30 years old) and an elder population (>30 years old). The Epstein Barr virus oncogene LMP1,
the anti-apoptotic Bcl-2 protein and the tumor suppressor p53 have recently emerged as biomarkers of the disease. EGFR/ErbB1 expression is detected in the majority of NPC tumors with advanced disease. To obtain greater
insight into the potential oncogenic mechanisms specific to these two NPC populations, we examined the correlation between EGFR expression and patient age...
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05 Hafida Harrar-Ferfera, Farouk Amrani Polymerization of Methyl Methacrylate with Nickel
(II)a-Benzoinoxime Complex
Polymerizations of methyl methacrylate
(MMA) monomer initiated by a novel Ni(II)a-benzoinoxime complex have been achieved under homogeneous conditions in the 25–608C temperature range. The activity for
polymerization increases with reaction temperature and by
carrying out the polymerization in solution of low-polarity
solvents without any induction time...
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06 T. Djama
Relativistic Quantum Newton’s Law
and Photon Trajectories
Using the relativistic quantum Hamilton-Jacobi equation within the framework of the equivalence postulate, and grounding oneself on both relativistic and quantum Lagrangians, we construct a Lagrangian of relativistic
quantum system in one dimension and derive a third order equation of
motion representing a first integral of the relativistic quantum Newton’s
law. Then, we investigate the free particle case and establish the photon’s
trajectories.
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07 Fatah Chérifi Jean-Claude Rousselle
Abdelkader Namane Fatima Laraba-Djebari
CCSV-MPase, a Novel Procoagulant Metalloproteinase
from Cerastes cerastesVenom: Purification, Biochemical
Characterization and Protein Identification
A procoagulant metalloproteinase called CCSVMPase was purified fromC. cerastesvenom by successive
chromatographic methods starting with gel-filtration
through Sephadex G-75; ion-exchange DEAE-Cellulose
A-50; affinity chromatography on Benzamidine Sepharose
6B and RP-HPLC on a C8 column. CCSV-MPase has been
isolated to an extent of about tenfolds and its molecular mass
was evaluated at 70 kDa by SDS–PAGE...
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08 Ghe´nima Boukais-Belaribi,
Amir H. Mohammadi, Farid B. Belaribi,
 and Dominique Richon
Excess Molar Enthalpies for the Binary and Ternary Mixtures of Cyclohexane,
Tetrahydropyran, and 1,4-Dioxane at 308.15 K and Atmospheric Pressure:
Experimental Measurements and Correlations
Excess molar enthalpies for the binary and ternary mixtures of cyclohexane, tetrahydropyran, and 1,4-dioxane have been measured using a Calvet microcalorimeter at 308.15 K and atmospheric pressure. The
experimental binary results are correlated using the Redlich-Kister equation. The excess molar enthalpies
for the ternary system are correlated using the Cibulka equation. The capability of the artificial neural network
algorithm to model these data is finally studied.
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09 DjameI-Eddine  Cherrak  and  SaVd Djadoun A study  of mixtures  of poly(ethylene  oxide)
with polystyrene  or poly(styrene-co-acrylic  acid)
by inverse  gas chromatography  and viscosimetry
Systems  of  poly(ethylene  oxide)/polystyrene  and  of  poly(ethy-
lene  oxide)/poly(styrene-co-acrylic  acid)  of  different  ratios
were  studied  by  inverse  gas  chromatography using  benzene  and
n-decane  as  molecule  probes  and  by  viscosimetry  in  tetrahydro-
furan.  The  transition  temperatures as  shown  in  the  retention
diagrams  and  the  interaction  parameters  as  determined by  inver-
se  gas  chromatography and  by  viscosimetry  showed  that  whereas
poly(ethylene  oxide)  is  incompatible  with  polystyrene  ......
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10 K. ALLIA
N. TAHAR
L. TOUMI
Z. SALEM
BIOLOGICAL TREATMENT OF WATER CONTAMINATED BY
HYDROCARBONS IN THREE-PHASE GAS-LIQUID-SOLID FLUIDIZED BED
Biological treatment has been carried out in two different systems: aerated closed and threephase fluidized bed reactors for hydrocarbons removal from refinery wastewaters. For the two  systems, hydrodynamic study allowed the determination of operating conditions before  treatment experiments. Then, in a second time, biological treatments have been conducted in  the same operating conditions. The obtained results showed that in the three-phase fluidized .....
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11 S. Arezki
, E.M. Berkouk
High Voltage of two Batteries – two five-levels NPC voltages sources inverters
Cascade. Application to the DSIM Drive
In this paper, the authors present the stability
problem of the input DC voltages of the five levels neutral
point clamping (NPC), when power is provided by a
continuous source constant (Batterie). In order to sabilisis these DC voltages, they present and  study a new cascade: two batteries-two capacitors filterstwo five levels NPC voltage source inverter (VSI) applies to  the double star induction machine (DSIM)...
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12 S.AREZKI ;M. BOUDOUR Behavior of a Double-fed Asynchronous Machi
Supplied by a Source: Wind - photovoltaic
  In order to extract maximum power  from the  generator  driven by a wind power,  a photovoltaic system  has been modeled to excite the  machine.  To improve the  efficiency of electromechanical  conversion and quality of  energy  supplied,  we  present  the  system  Hybrid  windphotovoltaic  for  a  doubly  fed  induction  machine.  The  results obtained are very advanced and satisfactory. Lien
13
A. Keffous
, K. Bourenane
, M. Kechouane
, N. Gabouze
, T. Kerdja;
L. Guerbous
, S. Lafane
Effect of anodization time on photoluminescence of porous thin
SiC layer grown onto silicon
A porous SiC (PSC) layer was fabricated by anodization of a 1.6mm thin SiC layer deposited onto p-type Si(1 0 0) substrate by pulsed laser deposition (PLD), using a hot-pressed 6H-SiC(p) as sputtered target. p-Type PSC layers were fabricated by anodization in HF/ ethylene glycol electrolyte (1:1 by vol.) at different etching times. The properties of the PSC layer formed by this method were.....
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14 Fatiha Bouzouia, Said Djadoun Specific Interactions in Poly(styrene-co-2-Hydroxyethyl
acrylate)/Poly(styrene-co-N, N-dimethylacrylamide)
Systems
Amphiphilic copolymers of poly(styrene-co-2-hydroxyethyl acrylate) (SHEA) and poly(styrene-co-N, Ndimethylacrylamide) (SAD) of different compositions were prepared by free radical copolymerization and characterized by different techniques. Depending on the nature of the solvent and the densities of interacting species incorporated within the polystyrene matrices,..... Lien
15 R. AIT YAHIA-DJOUADI, D. HERNANE-BOUKARI, AND D. TENIOU A STUDY OF THE INVERSE OF A FREE-SURFACE PROBLEM We prove the existence of an obstacle lying on the bottom of an infinite channel inducing a surface on the upper bound of the fluid domain. This problem is the inverse of the free-surface problem flow which has been studied by several authors. We use the implicit function theorem to establish the existence of the solution of the problem. Lien
16 Assia Siham Hadj-Hamou, Abderrahmane Habi, Said Djadoun Thermal and FTIR analysis of the miscibility and phase behaviour of poly (isobutyl methacrylate-co-4-vinylpyridine)/poly (styrene-co-acrylic acid) systems The miscibility and phase behaviour of poly (isobutyl methacrylate-co-4-vinylpyridine) containing
20 mol% of 4-vinylpyridine (IBM4VP20) and poly (styrene-co-acrylic acid) containing 27 or 32 mol% of
acrylic acid (SAA27 or SAA32) mixtures were investigated by ....
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17 R. Oussaid and B. Haraoubia Longitudinal- and transverseoperators formalism for chiral
media: Application to guided
structures filled with chiral materials
In this paper an approach based on the calculation of longitudinal and transverse operators is presented. The paper is devoted to the interesting topic of electromagnetic-wave propagation in complex (chiral) media. The studied process allows the analysis of guided structures with chiral-medium components. In this case the equations are continuously coupled. Using the longitudinal equations,... Lien
18 Lydia Salhi , Samia Bouzroura-Aichouche
, Yamina Benmalek
, Yamina
Bentarzi, Sophie Poulain-Martini, Bastien Cacciuttolo, Elisabet Dunachand Bellara Nedjar-Kolli
An efficient conversion of maleimide derivatives to2-thioxo
imidazolidinones
Starting from maleimidederivatives, a series of 2-thioxoimidazolidinones was prepared through two  different  procedures.  These  syntheses  have  achieved in  two  steps  via  reaction  between  maleimide  derivatives  1,semicarbazide  hydrochloride 9  and  isothiocyanates5,the  best  results  being  obtained  under  acid  conditions  (AcOH  or  heteropolyacid  in  ethanol  or  acétonitrile).  The  synthesized  compounds  11a-f and  substituted  thiohydantoins 6a-h, 8a-hwere screened for their in vitro anti-bacterial activity against four bacterial strains. Lien
19 Malek Rahoual, Rachid Saad Solving Timetabling Problems by Hybridizing Genetic
Algorithms and Tabu Search
 As demand for Education increases and diversifies, so does the
difficulty  of  designing  workable  timetables  for  schools  and  academic  institutions.  Besides  the  intractability  of  the  basic  problem,  there  is  an  increasing  variety  of  constraints  that  come  into  play.  In  this  paper  we  present a hybrid of two metaheuristics (genetic algorithm and tabu search)  to tackle the problem in its most general setting.  Promising experimental
results are shown.
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20 A Boutaghane , K Bouhadef , F Valensi
, S Pellerin and Y Benkedda
Theoretical  model  and  experimental  investigation  of current
density boundary condition for welding arc study
This  paper  presents  results  of  theoretical  and  experimental  investigation  of  the  welding  arc  in  Gas  Tungsten  Arc  welding  (GTAW)  and  Gas  Metal  Arc  Welding  (GMAW)
processes. A theoretical model consisting in simultaneous resolution of the set of conservation  equations for mass, momentum, energy and current,...
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21 H. Slimani
, A. Aidoud,,F.Rozé
30 Years of protection and monitoring of a steppic rangeland
undergoing desertification
Stipa tenacissimaL., which has long been recognised as the typical dominant perennial plant in the North-African arid rangelands is currently going into extinction in the steppic High Plains of Algeria. The vegetation and soil dynamics were analyzed at an initially dense stand. The trend between 1976 and 2006 was investigated using five reference years..... Lien
22 K. Azouaouia,
, S. Rechak, Z. Azari
, S. Benmedakhene
, A. Laksimi
,G.Pluvinage
Modelling of damage and failure of glass/epoxy composite plates
subject to impact fatigue
n investigation has been carried out to study the impact fatigue damage of glass/epoxy laminated composites. Accumulation
of damage, such as matrix cracking, delamination and fibre breakage, with repeated impact of the composite material may reduce the overall stiffness. These damage modes have been combined in a very complicated way to describe damage growth and fracture....
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23 Khaled Latreche, Fatma Rahmania High extracellular accumulation ofp-hydroxybenzoic acid,p-hydroxycinnamic
acid andp-hydroxybenzaldehyde in leaves ofPhoenix dactyliferaL. affected
by the brittle leaf disease
The work reported here is thefirst attempt to analyze the soluble and extracellular phenolics in the date palm affected by the brittle leaf disease. It aims to understand the biochemical basis of the date palm resistance to this pathology whose the causal agent is still unknown. The GC/EI-MS study of phenolic compounds separated from cell wall of healthy and affected leaves, revealed several modifications. In leaves presenting moderate symptoms, an enhanced extracellular accumulation ofp-hydroxybenzoic acid, Lien
24
NOUREDDINEBEGHOUL,
JEAN-LUCCHATELAIN,
MOHAMED-SALAHBOUGHACHA,
HADJBENHALLOU,
RIDA DADOU,
and AMIRAMEZIOUD-SAI¨CH
Seismic Empirical Relations for the Tellian Atlas, North Africa, and their Usefulness
for Seismic Risk Assessment
Seismic events that occurred during the past half
century in the Tellian Atlas, North Africa, are used to establish fundamental seismic empirical relations, tying earthquake magnitude to source parameters (seismic moment, fault plane area, maximal displacement along the fault,..
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25 D. Hammoudi-Triki , J. Lefort , C. Rougeot , A. Robbe-Vincent , C. Bon,
F. Laraba-Djebari , V. Choumet
Toxicokinetic and toxicodynamic analyses ofAndroctonus australis hector
venom in rats: Optimization of antivenom therapy
This paper reports the simultaneous determination of toxicokinetic and toxicodynamic properties ofAndroctonus australis hectorvenom, in the absence and presence of antivenom (F(ab′)2and Fab), in envenomed rats. After subcutaneous injection of the venom, toxins showed a complete absorption phase from the site of injection associated with a distribution into a large extravascular compartment. The injection of Fab and F(ab′)2 induced the neutralization of venom antigens in the blood compartment,.. Lien
26 E. Zemouri, Y. Chibani, and Y. Brik Enhancement of Historical Document Images by  Combining Global and Local Binarization Technique n this paper we present a combined binarization
technique  for  historical  document  images.  Usually,  many  binarization  techniques  are  implemented  in  the  literature  for  different  types  of  binarization  problems....
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27 L. Hadjadj, K. Hamdache,and D. Hamroun
An Existence Result to a Strongly Coupled Degenerated System Arising in Tumor Modeling We consider a mathematical model to describe the growth of a vascular tumor including tumor cells, macrophages, and blood vessels. The resulting system of equations is reduced to a strongly 2×2 coupled nonlinear parabolic system of degenerate type... Lien
28 K.  Mezali ,  V. zupo , p.  Francour POPULATION  DYNAMICS  OF HOLOTHURIA  (HOLOTHURIA)
TUBULOSA AND HOLOTHURIA  (LESSONOTHURIA)  POLII OF
AN  ALGERIAN POSIDONIA  OCEANICA MEADOW
eposit-feeder  holothurians  represent  a  major  component  of Posidonia  oceanica (L.)  Delile  ecosystems. They actively contribute to the turnover of organic matter by ingesting materials in the detritus layer... Lien
29 K. Bourenane, A. Keffous,
M. Kechouache,b G. Nezzal,A. Boukezzata and T. Kerdja
Morphological and photoluminescence stud of porous thin SiC layer grown onto silicon A porous SiC layer was fabricated by anodization of a 1.6µm-thin SiC layer deposited onto p-type Si(100) substrate by pulsed laser deposition (PLD), using a hot-pressed 6H-SiC(p) as sputtered target. P-type porous SiC layers were realized by anodization in HF/ethylene glycol (ETG) electrolyte (1 : 1 by vol.) at different etching times. The properties of the porous SiC layer formed
by this method were investigated by SIMS,...
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30 M.Belazzoug , A.Hellal and F.Ykhlef NewReactive Power Sources Dispatch applied to the IEEE 57 Nodes This paper deals with a new dispatching and optimisation of  reactivepowersourcesinpower systems. The methodology is first based on an optimal movement of  existing reactive sourcesasafirst phase,... Lien
31 Naima Abdellaoui-Arous, Said Djadoun Poly[2-(N,N-Dimethylamino) Ethyl Methacrylate] / Poly(Styrene-Co-Methacrylic Acid) Interpolymer Complexes Poly[2-(N,N-dimethylamino)ethyl methacrylate] (PDMAEMA), copolymers of different compositions of styrene with 2-(N,N-dimethylamino)ethyl methacrylate
(SDMAEMA) or methacrylic acid (SMA) were synthesized by free radical polymerization and characterized by several techniques....
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32 N. Tigrine-Kordjani
, B.Y. Meklati, F. Chemat
Microwave ‘dry’ distillation as an useful tool for extraction of edible essential oils Microwave ‘‘Dry’’ Distillation or microwave accelerated distillation (MAD) is proposed as a method for ‘‘green’’ extraction of edible essential oils extensively used in the fragrance, flavour,.... Lien
33 ASSIA SIHAM HADJ HAMOU,
KHALED ELMILOUDI,SAID DJADOUN
A Thermodynamic Analysis of Specific Interactions in Blends of Poly(styrene-co-N,N-dimethylacrylamide)
and Poly(styrene-co-acrylic acid). Screening and Self-Association Effects
In a first step of this contribution, the observed glass transition temperature-composition behavior of miscible blends of poly(styrene-co-N,N-dimethylacrylamide) (SAD17) containing 17 mol  ofN,N-dimethylacrylamide and poly(styrene-coacrylic acid) (SAA18, SAA27,... Lien
34 N. Tigrine-Kordjani, B.Y. Meklati
, F. Chemat
Analysis by gas chromatography–mass
spectrometry of the essential oil of Zygophyllum albumL., an aromatic and medicinal plant growingin Algeria.
he volatile constituents of the essential oil ofZygophyllum album L., growing in Algeria, extracted by hydro distillation have been analysed. A total of 100 volatile compounds were identified and (E)-b-damascenone (11.8%) was the major component of the oil. This is the first report on the chemical compounds of the essential oil of this species. Lien
35 Hacène Belbachir, Sadek Bouroubi, Abdelkader Khelladi Connection between ordinary multinomials, Fibonacci numbers, Bell polynomials and discrete uniform distribution Using an explicit computable expression of ordinary multinomials, we establish three remarkable connections, with the q-generalized Fibonacci sequence, the exponential partial Bell partition polynomials and the density of convolution powers of the discrete uniform distribution. Identities and various combinatorial relations are derived. Lien
36 Youcef Chibani Selective Synthetic Aperture Radar and
Panchromatic Image Fusion by Using the
à Trous Wavelet Decomposition
Synthetic aperture radar (SAR) imaging sensor presents an important advantage for the earth change observation independently of weather conditions. However, the SAR image provides an incomplete information (as roads) of the observed scene leading thus to an ambiguous interpretation. In order to compensate the lack of features,... Lien
37 A. Achour, K. Ait Aissa, M. Mbarek
, K. El Hadj, N. Ouldhamadouche
, N. Barreau L. Le Brizoual , M.A. Djouadi
Enhancement of near-band edge photoluminescence of ZnO film buffered with TiN ZnOfilms were deposited on Si substrate by RF-sputtering using titanium nitride (TiN) as buffer layer that was deposited at different thicknesses: 160 and 2290 nm. Despite the lattice mismatch of up to 6.35% between ZnO and TiN, the ZnOfilms deposited on TiN buffer layers show enhanced near-band-edge photoluminescence (PL) emission at room temperature which is two times higher of magnitude than those grown directly on Si. The PL enhancement intensity,... Lien
38 Hyem SAADI, Merzak FERROUKHI and Mokhtar ATTARI Development of Wireless High Immunity EEG  Recording System In this study, a single channel wireless EEG
acquisition system is developed for biomedical instrumentation.  This system is divided into two parts: analog front end circuit  and a digital processing circuit. The analog part includes a  protection circuitry,...
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39 Z. Benabdelghani,S. Djadoun,
A. Etxeberria, J. J Iruin,C. Uriarte
Phase Behavior of Binary and Ternary Blends of Poly(styrene-co-methacrylic acid), Poly(styrene-co-4-vinylpyridine), and Poly(2,6-dimethyl-1,4-phenylene oxide) Poly(styrene-co-methacrylic acid) (PSMA)
and poly(styrene-co-4-vinylpyridine) (PS4VP) of different compositions were prepared and characterized. The phase behavior of these copolymers as binary PSMA/PS4VP mixtures or with poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) as PPO/PSMA or PPO/PS4VP and PPO/PSMA/PS4VP
ternary blends was investigated by differential scanning
calorimetry (DSC)....
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40 Ahmed Bouferguene and Hassan Safouhi A complexity analysis of the Gauss–Bessel quadrature
as applied to the evaluation of multi-centre integrals
over STFs
In a previous work (Bouferguene 2005J. Phys. A: Math. Gen. 383923), we have shown that in the framework of the Gaussian integral transform, multicentre integrals over Slater type functions can be evaluated to an acceptable accuracy using a tailored Gauss quadrature in which the weight function.... Lien
41 Miloud Bagaa, Yacine Challal, Abdelraouf Ouadjaout, Noureddine Lasla, Nadjib Badache Efficient data aggregation with in-network integrity control for WSN Energy is a scarce resource in Wireless Sensor Networks (WSN). Some studies show that more than 70% of energy is consumed in data transmission in WSN. Since most of the time, the sensed information is redundant due to
geographically collocated sensors, most of this energy can be saved through data aggregation. Furthermore,....
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42 Mustapha Chellali, Abdelkader Khelladi, Frédéric Maffray EXACT DOUBLE DOMINATION IN GRAPHS In a graph a vertex is said to dominate itself and all its neighbours. A doubly dominating set of a graph G is a subset of vertices that dominates every vertex of G at least twice... Lien
43 Mohamed Houari , Boualem Hamdi , Omar Bouras , Jean-Claude Bollinger , Michel Baudu Static Sorption of Phenol and 4-Nitrophenol onto Composite
Geomaterials based on Montmorillonite, Activated Carbon and
Cement
This paper studies the sorption of phenol and 4-nitrophenol (4NP) onto solid sorbents
derived from mixtures of montmorillonite, activated carbon (AC) and cement,....
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44 Noureddine Ouadah  Lamine Ourak  Mustapha Hamerlain  Farès Boudjema Implementation of an Oriented Positioning on a Car-Like Mobile
Robot by Fuzzy Control
n this paper, a Fuzzy logic controller (FLC) is used  to implement an efficient and accurate positioning of a car-like  autonomous mobile robot with a desired orientation. To  accomplish such task,... Lien
45 D. Abdessemed, G. Nezzal Coupling softening — ultrafiltration like pretreatment of sea  water case study of the Corso plant desalination (Algiers) The demand of fresh water is increasing twice as fast as population growth, while the natural resources remain
invariable or in reduction. Otherwise, the needs of development make that the demand will be superior to
resources. To satisfy these last,...
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46 S.Benkhider , A.R. Baba-Ali , H. Drias A new generationless parallel evolutionary algorithm for  combinatorial optimization  This paper presents a new parallel evolutionary  approach where the concept of generation has been removed  and replaced by the cycle one. Indeed, ... Lien
47 Amel Bouanane-Darenfed,
Wajdi Ben Hania,Hocine Hacene,Jean-Luc Cayol,Bernard Ollivier and Marie-Laure Fardeau
Caldicoprobacter guelmensissp. nov., a
thermophilic, anaerobic, xylanolytic bacterium
isolated from a hot spring
A hyperthermophilic anaerobic bacterium, designated D2C22T
, was isolated from the hydrothermal hot spring of Guelma in north-east Algeria. The isolate was a Gram-stain-positive,...
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48 Nacéra Tigrine-Kordjani, Brahim Youcef Meklati, Farid Chemat, Fatma Zohra Guezil Kinetic Investigation of Rosemary Essential Oil by Two Methods: Solvent-Free Microwave Extraction
and Hydrodistillation
Depending on the use area of rosemary essential oil, pharmaceutical, cosmetic, or in food, the choice of both method and extraction time is fundamental, and the sample characterization is mainly based on comparing a few compounds that act as markers of a defined quality for a
precise application. In the present work,...
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49 Hassiba Nemmour, Youcef Chibani Integrating Class-Dependant Tangent Vectors into  SVMs for Handwritten Digit Recognition  Tangent vectors are one of the best tools for learning variability in handwritten digits. Many research works indicate
that tangent vectors provide a significant improvement of  accuracy especially when used with SVM classifiers. However,...
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50 N. Yahi, E. Vela, S. Benhouhou, G. De Belair,R. Gharzouli Identifying Important Plants Areas (Key Biodiversity  Areas for Plants) in northern Algeria A study was undertaken in 2010 to identify Important Plant Areas (Key  Biodiversity Areas for Plants) in the south and east Mediterranean region, ... Lien