Table of content

Iraqi Journal of Science

المجلة العراقية للعلوم

ISSN: 00672904
Publisher: Baghdad University
Faculty: Science
Language: Arabic and English

This journal is Open Access

About

The Iraqi journal of science is a quarterly specified scientific journal issued by the Faculty of Science at the University of Baghdad. The members of the Editorial Board representing the Departments of Eight Scientific departments, college of science/ Baghdad University and its related units of research, all are professors, scientists with extensive experience and considerable skills in their field of science, as well as an advisory board in support composed of professors and scientists with great reputation in their field of science from other Colleges, universities, or research institutes. The specialty of publication includes the following fields:

1.Pure and Applied Physics.
2.Mathematical Sciences.
3.Computer Science and Information Technology.
4.Science of chemistry.
5.Bio-Science technologies.
6.Earth Sciences, geo-physics, and remote sensing.
7.Astronomy, Space Sciences, and Remote Sensing Unit.
8.Science and Research of tropical area

The visions, goals, and the mechanisms of the Iraqi Journal of Science is to publish scientific research sober in the areas of Applied and Pure Sciences and instructive Iraqi society, scientific research, scientific interest large to contribute to the development of various disciplines, which provides significant support to researchers in all scientific facilities to continue to support the development plans in Iraq.

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Contact info

Baghdad University
College of Science
Baghdad
Iraq
ijs@scbaghdad.edu.iq
07903375590
http://ijs.scbaghdad.edu.iq

Table of content: 2012 volume:53 issue:3

Article
SYNTHESIS AND STUDY OF BIOLOGICAL ACTIVITIES OF2,6-DIARYLPIPERIDONE –y-DERIVATIVES
تحضير ودراسة الفعالية الحيوية لبعض مشتقات -6,2ثنائي فنيل البيبيريدون4-

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In the present study new series of2,6-diarylpiperidones-4 derivative were synthesized and these compounds are : 1-(1-oxo-2-chloro-ethyl)-3,3-dimethyl-2.6-diarylpiperidone-4(I) 1-(1-oxo-2-chloro-ethyl)-3.5-dimethyl-2,6-diarylpiperidone-4(II) 1-(1-oxo-2-imidazolyl-ethyl) -3,3-dimethyl-2,6-diphenyl piperidoe-4(III) 1-(1-oxo-2-imidazolyl-ethyl)-3,5-dimethyl-2,6-diphenylpiperidoe-4 (IV) The prepared compounds were characterized by IR,LC-MS and 1H,13C-NMR spectra .All compounds were screened for their antibacterial activity against gram positive bacteria :Bacillus subtilis and gram negative bacteria :Escherichia coli at different concentration (1000, 500, 250, 100) ppm. These compounds show good activity against gram positive more than gram negative bacteria


Article
EVALUATION OF IRAQI MONTMORILLONITE AS ADSORBENT FOR THE REMOVAL OF OXYTETRACYCLINE FROM WATER
تقييم المونتموريلونايت العراقي كعامل امتزاز في ازالة الاوكسي تتراسايكلين من الماء

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Abstract

This work is a contribution to the global interest of scientific community in the field of cleaning the environment from drug and antibiotic residues which lead to the development of new generations of bacteria with improved resistance to antibiotics. The sorption of oxytetracyclin, OTC, on an Iraqi certified clay mineral, the montmorillonite, is used as indicative for the success of the used treatments. Batch equilibration experiments were carried out to follow the sorption behavior of OTC on the clay. The concentration of OTC was determined by spectral absorption at 360 nm which presented excellent correlation with high performance liquid chromatography, HPLC, method over a wide range of concentration (R2 = 0.977). After equilibration of synthetic OTC solutions with the clay for various intervals of time and various pH values, the concentration of OTC was employed to estimate the sorption efficiency of montmorillonite. The pH of the solution has only minor effect on the sorption efficiency. The kinetic treatment of the sorption results indicated two distinctive steps for the adsorption of OTC on the clay. Montmorillonite was proved as a candidate sorption material for OTC ensuring a removal efficiency of (94-96%) even at low clay contents. Experimentally the OTC concentration could be decreased from 0.5 to 0.03 mol/L at a pH value of 5.5 by sorption onto 2.0 g clay (montmorillonite)/L.


Article
SYNTHESIS OF 1,2,3-TRIAZOLES BASED ON PHENACYL AZIDE DERIVATIVES VIA CLICK CHEMISTRY
تحضير 3,2,1-ترايزولات ابتداءً من مشتقات أزيد الفيناسيل بطريقة كيمياء النقرة

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Etherification of n-hexanol, n-heptanol and n-octanol with propargyl bromide in the presence of sodium hydroxide in DMF afforded the terminal alkynes (2) a, b and c. Phenacyl bromide, p-bromophenacyl bromide and p-phenylphenacyl bromide were converted to corresponding azides (4) a, b and c respectively by traditional SN2 reaction of the mentioned bromides and sodium azide in DMF. The cycloaddition of the propargyl ethers (2) with the prepared organic azides (4) using click conditions gave the target 1,4-disubstituted 1,2,3- triazoles (5)-(7) in good yields. All the synthesized triazoles were characterized by FT-IR while the compounds (5) a,b and c were characterized by 1H NMR and 13C NMR in addition to FT-IR technique.


Article
A HISTOLOGICAL STUDY ON THE EFFECT OF AQUEOUS EXTRACT OF Capsicum spp. ON Entamoeba histolytica IN ALBINO MICE.
دراسة نسجية لتأثير المستخلص المائي للفلفل الحار Capsicum spp.في طفيلي الزحار الاميبي Entamoeba histolytica في الفئران البيض

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The present study was conducted to determine the effect of hot pepper Capsicum spp. on the cysts and trophozoites stages of Entamoeba histolytica in albino mice. The previosly infected mice with E. histolytica were administered with two doses (0.01 and 0.03 ml) of aqueous extract of hot pepper three times daily at(morning, afternoon and evening) for a period of 7 days. The results showed that the aqueous extract of hot pepper was very effective in decreasing the numbers of cysts and trophozoites of E. histolytica in mice. The highest percentage was recorded with the dose of 0.03 ml which was100 % for trophozoites and 90.1 % for cysts. The histological study of small and large intestine and liver revealed that the low concentration was more effective to eliminate the injuries in small and large intestine and liver.


Article
REPRODUCTION OF ENTOMOPATHOGENIC NEMATODES Steinernema carpocapsae AND Heterorhabditis bacteriophora ON THE GERMAN COCKROACH Blatilla germanica AT DIFFERENT TEMPERATURES.
النشاط التكاثري للديدان الخيطية المتطفلة Steinernema carpocapsae و Heterorhabditis bacteriophora عند درجات حرارية مختلفة. Blatilla germanicaعلى الصرصر الالماني

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Adult and nymph stages of German cockroaches Blatilla germanica were infested with two entomopathogenic nematodes, Steinernema carpocapsae and Heterorhabditis bacteriophora in vitro at 15, 20, 25o C. Results showed that S. carpocapsae was more virulent than H. bacteriophora at all temperatures over the exposure times of 24, 48 and 72 h. Infection of nymphs by S. carpocapsae at 20o C caused 100% mortality after 72h and 100% mortality of adults at 25 o C after 72h. Reproduction of S. carpocapsae significantly increased at 25o C after 72 h compared to H. bacteriophora.


Article
DIAGNOSIS OF Fusarium oxysporum FUNGUS ISOLATIONS AND EVALUATION OF THE EFFICIENCY OF THE BACTERIA Bacillus subtilis AND POTASSIUM PHOSPHATE IN THE INHIBITION OF FUNGI F.oxysporum f.sp. cucumerinum and F.oxysporum f.sp. melonis
تشخيص عزلات الفطر Fusarium oxysporum وتقييم كفاءة البكتريا Bacillus subtilis وفوسفات البوتاسيوم في تثبيط الفطرين الممرضين f.sp. cucumerinum , F.oxysporum F. oxysporum f.sp. melonis

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Abstract The study aimed to isolate and diagnose types of Fusarium oxysporum from the roots of cucumbers and melons plants infected , from the fields of Al- Ssaouira, Al-Numaniya and Al-Hai in Wasit Governorate , and the possibility to control it by using the bacteria Bacillus subtilis and potassium phosphate concentration (500) mg / liter of water. Were obtained on (19) pure isolates of fungus F.oxysporum f.sp. cucumerinum and (11) pure isolates of F.oxysporum f.sp. melonis . The isolate F.oxysporum f.sp. cucumerinum (FOS 9) showed a high virulence than the rest isolates , white the isolates F.oxysporum f.sp. melonis (FOM 2) showed a high virulence than the rest isolates . The bacteria B.subtilis showed high antibiosis activity against F. oxysporum f.sp. cucumerinum and F.oxysporum f.sp. melonis and recorded (87.0%) and (92.5%) respectively.


Article
ANTIBACTERIAL ACTIVITY OF RICINNUS COMMUNIS: IN VITRO STUDY
التأثير البكتيري المضاد للخروع:دراسة مختبرية

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Ricinnus communis herb produces significant antimicrobial activity particularly against Gram negative bacteria, in comparison with standard antibiotics. Four bacterial genera were selected two Gram negative (Escherichia coli, and Pseudomonas aeruginosa); and two Gram positive (Staphylococcus aureus, Enterococcus fecalis). These bacterial isolates were incubated and subsequently adding Ricinus communis extracts which were prepared as alcoholic and aqueous solutions .The MIC (Minimal Inhibitory Concentration)was determined for ten isolates of each bacteria . Results showed that the MIC of aqueous extracts ranged between 8-32mg/ml for all selected bacteria while the MIC of the alcoholic extract ranged between 8-16mg/ml. Moreover; the lowest MIC of alcoholic extract was 8mg/ml while the lowest MIC for aqueous extract was 16mg/ml. In conclusion, the alcoholic and aqueous extract generates specific MIC, but the alcoholic extracts produce more particular effects by lower MIC (8 mg/ml). Thus; a topical application of these extracts are useful as alternative antimicrobial remedy regarding the sensitive bacteria.


Article
STUDY THE EFFECT OF THE AQUATIC AND ALCOHOLIC EXTRACTS OF Peganum harmala SEEDS ON Entamoeba histolytica IN VITRO
دراسة فعالية المستخلص المائي و الكحولي لبذور الحرمل Peganum harmala ضد طفيلي الأميبا Entamoeba histolytica خارج الجسم الحي

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In vitro test has been made to find out the efficacy of aqueous and ethanolic extract of Peganum harmala seeds against Entamoeba histolytica in three concentrations (1000, 1500, 2000 µg/ml) in an exposure time of 2hrs, preliminary chemical analysis has been performed for some chemical groups which may exist in the seeds. Results showed that all concentrations of alcohol extracts caused high mortality against parasite by using the alcohol extract in all used concentrations, this may due to the high containing of alkaloids. The highest mortality percentage achieved by alcohol extract was 97.5% while it was 90.1% by aqueous extract at 2000 µg/ml.


Article
DETECTION OF SOME BACTERIAL CAUSES OF WATERY DIARRHEA IN THE PROVINCE OF BAGHDAD AND SOME NORTHERN GOVERNORATES WITH ASTUDY OF PATHOLOGICAL EFFECTS
دراسة امراضية لضمات الكوليرا النمط الحيوي الطور وبكتريا مشابهة للضمات المعزولة من مرضى الاسهال المائي المشخصة خلال وباء 2007-2008

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The present study Investigate the study on the causes of diarrhea epidemic in the province of Baghdad and some northern governorates since been collected 140 stool samples of water of different ages for the period from the beginning of the month of October 2007 to the end of August 2008, after culture ,microscopic biochemical testing diagnosed (113) bacterial isolates was among them ( 66) isolation rate of (% 47.14) only belonging to Vibrios cholera, Vibrio cholerae are divided by (58) in a rate (% 87.87) and returned to the pattern under serum Inaba, and (5) isolates, a rate (% 7.57) and returned to the pattern under serum Ogawa, all belonging to the pattern of bio-El-Tor and three isolates by (4.54%) belonging to non-cholera vibrios NAG The study showed the presence of 10 bacterial isolates were similar in most characteristics of the cholera bacteria, vibrios with some of the differences that emerged when Biochemical tests, which gave a negative result of the examination and testing of cholera red stitching and nitrate reduction Histopathological study using experimental animals indicate similarity in pathogenesis of V. cholerae and vibrio like bacteria ,both cause congested spleen and liver and desquamation in the intestinal villi


Article
ULTRAVIOLET RADIATION DOSIMETRY BY USING OF CN-85 , CR-39, LR-115 NUCLEAR TRACK DETECTORS
تجريع الأشعة فوق البنفسجية –UV باستخدام كواشف الأثر النووي CN-85 ، CR-39, LR-115

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Ultraviolet radiation dosimetry was determined by using CN-85 , CR-39, LR-115 nuclear track detectors – NTD with measuring of ; number of track-NT , etching time-TB , nuclear track diameter - DT and etching velocity -VD . By this study appear the increasing in etching time-TB of NTD samples which irradiated by UV-radiation do not pure effect on the number of track - NT , comparing with un-irradiated samples . The increasing in UV-irradiation make decreasing in etching time- Topt for CR-39 , CN-85 , LR-115 nuclear track detectors with percent of 20% , 25% , 50% respectively , comparing with un– irradiated sample at the radiation dose 3.77x103 erg /mm2 . . The increasing of irradiation dose make increasing in nuclear track diameter-DT with increase in etching time-TB at the radiation dose 300x103erg / mm2 for LR-115 detector . This study showing there was increasing in the percent value of etching velocity -VB with increasing in radiation dose for CR-39 , CN-85 . The increasing in nuclear track diameter- DT with increasing in radiation dose was appearing as a resulted of energy of radiation and producted free radicals which interact with chemical etching solution . This study optioned by using nuclear track detectors CN-85 , CR-39 for determination the radiation dosimetry through measuring of etching velocity -VB butter than LR-115 detector . PACS:- 29.40-n,29.70-e,87.60.M


Article
STUDYING INELASTIC TRANSVERSE ELECTRON SCATTERING FORM FACTORS OF THE ISOSCALAR TRANSITIONS IN 10B NUCLEUS
دراسة عوامل التشكل غير المرنة للأستطارة الألكترونية المستعرضة للأنتقالات غير المتجهة للنواة 10B

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Abstract

The inelastic transverse electron scattering form factors are studied for the four isoscalar transitions for the states of 10B nucleus. These states are specified by =1+0 (0.718 MeV), (2.154 MeV), 2+0 (3.587 MeV) and (4.774 MeV). These form factors are analyzed in the framework of the harmonic oscillator shell model. The transverse form factors have been calculated in the framework of the multi-nucleon configuration mixing shell model using the two-body interaction of Cohen and Kurath (C-K) to generate the 1p-shell wave function. The core polarization (CP) effects are included in the calculations through effective g-factors. A higher configuration effect outside the 1p-shell model space enhances the form factors for q-values and reasonably reproduces the data. The value of the size parameter (b) is chosen to reproduce the root mean square charge radius. The present results are compared with available experimental data and with that of other models. PACS:21.60-n,21.60 Cs, 25.30Dh,27.20 th.


Article
THE STUDY OF ELECTRIC QUADRUPOLE TRANSITION (E2) IN 58Ce AND 60Nd NUCLEI
دراسة أنتقال رباعي القطب الكهربائي للنوى 58Ceو 60Nd

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Abstract

Transition strengths for gamma transition from first excited 21+states to the ground states that produced by pure electric quadrupole emission in even –even nuclei of 58Ce and 60Nd have been calculated as a function of neutron number (N). The life times for 21+ excited states together with the intensities of γ0- transitions measurements are used in calculations. The results thus obtained have shown that; the nuclei with magic neutron number such as 58Ce140 and 60Nd142 have minimum value for . The reduced transition probabilities B(E2) are also calculated and compared with the experimental data and other theoretical models. PACS:- 27.60-j, 23.20-g, 23.20.Ck, 23.20.Gq.


Article
INELASTIC LONGITUDINAL C6 ELECTRON SCATTERING FORM FACTORS IN Ti-50, (RESIDUAL INTERACTION CONSIDERATION)
عوامل التشكل للاستطاره الالكترونيه الطوليه غير المرنه متعدده الاقطاب C6 لنواةTi-50 ( أعتبارات تفاعل البقيه)

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The single orbit 1f7/2 has been adopted as a model space. The use of modern realistic M3Y effective nucleon- nucleon interaction with two sets of fitting parameters (Ried fitting (M3Y-P1), and Paris fitting (M3Y-P0)) beside the use of MSDI has been done as a residual interactions within the calculation of core polarization effects in Inelastic longitudinal electron scattering C6 form factor in Ti-50 within the framework of first order perturbation theory (microscopic theory) with 2ћω excitation energy coupling the core orbits to the higher configurations one across the model space at normal transition. Harmonic oscillator wave functions (H.O) has been adopted as a single particle wave functions in 1f7/2 and with the aid of F7MBZ model space 1f7/2 effective interaction to generate the model space wave functions. The present results have been compared with the experimental data. PACS:-21.60 Cs; 23.20-g;24.10 Cu;25.30 Dh;27.40-Z.


Article
DETERMINATION OF ACTIVITY HYDROGEOCHEMICAL AND HYDRODYNAMIC OF WATER WELLS UMERDUHUMA AQUIFER SOUTH-WESTERN IRAQ .
تحديد النشاط الهيدروجيوكيميائي والهيدروديناميكي لمياه آبار الخزان الجوفي لأم رضمة – جنوب غرب العراق

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Hydrogeochemical analyses were done for UmErduhuma aquifer in S-W Iraq which have got cation and anion concentrations . This study shows the origin of the water is rainfall except well No.2 where is marine . the chemical of the water type of the wells No. 3,4,5,6, and 7 are calisum-sulfate while the wells No. 1 and 2 are sodium- sulfate . They are useful to irrigation jobs but they are not use in a human activity without biological and chemical treatment . The hydrodynamic study shows that the hydrodynamic activity is high so that hydro carbonic accumulation is a little , except well No.(2).


Article
GROUNDWATER VULNERABILITY MAP OF BASARA BASIN, SULAIMANI GOVERNORATE, IRAQI KURDISTAN REGION
خريطة عرضة المياه الجوفية لحوض باسرة، محافظة السليمانية، إقليم كردستان العراق

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The Basara basin which is one of the most promising hydrogeological basin in Iraqi Kurdistan Region, located in north east of Iraq, 25 km west of Sulaimani city, between the 496652 - 537752 East and 3911038 - 3951906 North in Universal Transverse Mercator (UTM) and lie in Zone 38N. The basin has a rectangular shape and covering an area of 571 km². The present hydrogeological investigations have revealed three inhomogeneous and anisotropic water bearing formations: Eocene Karstic Fissured Aquifer (EKFA), Intergranular Aquifer represented by Alluvium and Pliocene (AIA) & (PIA), as well as Miocene Complex Aquifer (MCA). For the first time, not only in Kurdistan but also in Iraq, Groundwater Vulnerability Map has been constructed in this study, using DRASTIC method with the assistance of Geographic Information System (GIS) to show zonation area of high and low groundwater susceptibility to pollution. Accordingly, vulnerability classes of the study area were classified into four classes. Most of the basin shows the highest extension of the zones with very low and low vulnerability zones, in contrast the zones with high vulnerability are distributed mainly in the mountain areas, solely in the eastern Uloblagh and Kuwaik mountains, in addition to that small zones in the farthest northern corner and south western corner of the area have less or no human activity.

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Article
SEISMICITY AND SEISMOTECTONIC STUDY FOR ALTUNKOPRI DAM SITE NORTH IRAQ
دراسة زلزالية تكتونية لموقع سد التون كوبري شمال العراق

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A seismicity and seismotectonicstudy for a dam site located on latitude (35˚:48΄ – 35˚:50΄) degree North and longitude (44˚:20΄) degree East was carried out. The surrounding area within a circular area ofradius 100 km was also included to determine the seismic activity. It is found that the area was subjected to 10 historical events prior 1900 year with an intensity ranges (V - IX) degree and the area exposed to about 163 recent earthquakes with Ms=1.1 – 5.9. The maps of epicentral locations, tectonic features and lineaments of the study area were compiled and drawn. Matching was carried out for these three maps and it is found that most of earthquake epicenters coincide with the main structural and tectonic phenomena at the dam site. ISO – intensity map for the dam site was also drawn. It is found that the dam site was located between (5 -6) degree earthquake intensity on MMI Scale

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Article
COMPARISON BETWEEN BASEMENT DEPTHS ESTIMATED FROM LAND MAGNETIC AND AEROMAGNETIC SURVEYS, WEST IRAQ
مقارنة بين أعماق صخور القاعدة محسوبة من المسح المغناطيسي الأرضي والمسح الجوي غرب العراق

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Basement depth is determined from land magnetic survey along a traverse with a length of 190 Km in the western desert of Iraq. The traverse was extended from Akkashat to Um Rthuma area. The shape and depth of the basement surface is obtained through using Geomodel program. The outcome is compared with the basement depth detrmined by Compagine Generale de Geophysique (CGG), through using aeromagnetic data. There are certain variations between the two results concerning the depth values along the traverse profile. The CGG basement depth map provided a general picture and the present results indicate the importance of re-determination of basement depth from field data and use the developed and sophisticated analysis procedures to get a new look to such important topic.


Article
RIGHT (σ,τ)-DERIVATIONS ON LEFT IDEALS
المشتقات(σ,t) اليمنى على المثاليات اليسرى

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Let R be a prime ring and I a nonzero left Ideal of R which is a semi prime as a ring. For a right (σ,τ) – derivations δ:R → R, we prove the following results: (1) If δ acts as a homomorphism on I, then δ= 0 on R. (2) If δ acts as an anti- homomorphism on I, then either δ = 0 on R or I Z(R).


Article
UNSTEADY NON-NEWTONIAN FLUID FLOW PROBLEM IN PLANE SOLVING BY MAC METHOD
مسألة مائع لانيوتيني غير مستقر في المستوي محلولة باستخدام خوارزمية MAC

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In this paper consideration is given to viscose, incompressible, time-depended and non-Newtonian fluid flowing in a straight pipe with square cross-section under the action of pressure gradient. In particular consideration is given to second order fluid flow which can be represented by the equation of state of the form: i,j = 1,2 Where η viscosity coefficient and ζ is normal stress coefficient and, Tij and eij , i,j =1,2 are the stress and rate of strain respectively. Cartesian coordinate system has been used to describe the fluid motion and it is found that equations of motion are controlled by Reynolds number and non-Newtonian parameter. The motion equations are solved by an explicit method namely MAC. Our study is ended with studying the effect of Reynolds number and non-Newtonian parameter on the fluid flow.


Article
A MODIFIED DAI-YUAN CONJUGATE GRADIENT METHODS AND ITS GLOBAL CONVERGENCE

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Based on the conjugacy condition often which is satisfy by quasi-Newton method, the new version of DY nonlinear conjugate gradient method is proposed, which is descent methods even with inexact line searches. The search direction of the proposed method has the form . When exact line search is used, the proposed method reduce to the standard DY method. Convergence properties of the proposed method is discussed. Numerical results are reported.


Article
REPRESENTATION OF GROUPS BY HOMOMORPHISM
تمثيل الزمر بواسطة التشاكلات

Authors: S.A.Bedaiwi سعد عويد بديوي
Pages: 629-632
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Issacs [1] shows that if is a homomorphism ( is the multiplicative group of the field F) and is a group, then one can define which is an F-representation of of degree 1 affords as character. [2,3,4] inspires us to do the following: given a homomorphism then we define a representation of by the homomorphism from a given F-representation of as . We study this kind of representations and their associated characters.


Article
REPRESENTATION OF GROUPS BY HOMOMORPHISM
تمثيل الزمر بواسطة التشاكلات

Authors: S.A.Bedaiwi سعد عويد بديوي
Pages: 629-632
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Abstract

Issacs [1] shows that if is a homomorphism ( is the multiplicative group of the field F) and is a group, then one can define which is an F-representation of of degree 1 affords as character. [2,3,4] inspires us to do the following: given a homomorphism then we define a representation of by the homomorphism from a given F-representation of as . We study this kind of representations and their associated characters.

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Article
SOME GENERALIZATIONS ON -LIFTING MODULES
بعض تعميمات مقاسات الرفع من الصنف ( )

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In this note we study the concept -lifting and we add some new results. Also we introduce weak -lifting modules and FI- -lifting modules as two generalizations of -lifting modules. We obtain some properties, characterizations and decompositions of weak -lifting modules and FI- -lifting modules.


Article
INTEGRATION POWER SUMS OF INTEGER NUMBERS FORMULA
تكامل صيغة مجموع الأعداد الطبيعية للقوى

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In this paper we fulfill to the power sums of integer numbers formula capable of integration. , in which when we make the Integration for the (r) power sums of integer numbers formula we obtain (r+1) power sums of integer numbers formula because we rearrangement the formula was writing denoted by single variable n (the greatest number we wanted find power sums to it). The formula become able to integrate when power series rewrite denoted by variable B=n (n+1) instead of single variable n, for odd power sums of integer numbers formula. also the even power sums of integer numbers formula become able to integrate ,if we rewrite it denoted by two variables A=2n+1 & B=n(n+1) allowance single variable n. farther more in this paper we advance to locate the relationship between power sums of integer numbers formula, and each of power sums of odd integer numbers formula and power sums of even integer numbers formula.


Article
G-CENTRALIZING MAPPINGS OF SEMIPRIME G-RINGS
التطبيقات المركزية من النمط -Γ على الحلقات شبه الاولية من النمط-Γ

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Let M be a G-Ring with center Z(M) and S a non-empty subset of M. A mapping F from M to M is called G-centralizing on S if [x,F(x)]α= xαF(x)-F(x)αxZ(M) for all xS,αG . we show that a semi-prime Γ-ring M must have a non-trivial central ideal if it admits an endomorphism which is Γ-centralizing on some non-trivial one –sided ideal.


Article
PREVENTING BRUTE FORCE ATTACK THROUGH THE ANALYZING LOG
منع القوة الغاشمة من خلال تحليل السجل

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Secure Shell (SSH) is a secure remote login program which can be used in place of regular telnet. It has become the default remote access method for administration of UNIX systems. It is very common for public Internet facing servers to experience attacks that attempt to brute force username and password combinations via SSH to gain access. This paper examines these attacks depending on SSH log file to find unsuccessful logins then blocks IP addresses of unsuccessful logins for a period of time that is decided by administrator and then send an e-mail to administrator to consider whether the addresses blocked belong to users failed to access or by an attacker, finally the administrator will block attacker's IP address forever. Some attackers highly skilled and just used trusted IP address as a user name then the software will block the IP address of attacker as well as the victim IP address that is used by attacker. In this paper, an adaptive mechanism was built-in to distinguish between attacker IP address and victim IP address which may be used by an attacker, and then the program will block just attacker IP address


Article
SHOWING THE GOODNESS OF ARTIFICIAL NEURAL NETWORK MODEL FROM THE STATISTICAL MODEL
بيان جودة نموذج الشبكات العصبية الاصطناعية من النموذج الإحصائي

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The aim of this research , Principal component Is to find orthognal sets of vectors that maximize the variance of the projected dat, pca seeks a transformation nation of the data into another from of reference with as little error as possible, using fewer factors than the original datat. and find the connection among the student’s degrees through an applicative study on accountancy department for the afternoon studied who graduated in 2002- 2003 in Management and Economy- Baghdad University. After taking their marks for the last year downward to the third year , second and first year far of the fail years with using of the model of artificial neural network and the statistical model (principle component), to compared the results between the two models and show the goodness of the artificial neural network as a method could be reliable instead of the statistical model


Article
OPTIMAL PALETTE CREATE WITH THE SPECIFIED NUMBER OF COLORS USING OCTREE QUANTIZATION
خلق صفيحة لونية مثلى بعدد معين من الالوان باستخدام التكميم الثماني

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Abstract

In the current research work, improved and fast method to get a good approximation of the most important 256 colors of a RGB-Picture was introduced. In this paper, we propose a spatially-adaptive optimum octree quantization method for robust color printing. The goal of spatially-adaptive octree quantization is to use quantization well-suited for smooth areas, and to use octree quantization method better suited for edges. It may be useful for digital image compression, graphics- and game programmers. Also, this includes reduction of the overall number of colors, quantization or patterning the reduced number of colors, generating bitmap images, and even handling Boolean (on/off) transparency. The results show the suggested adaptive octree data-structure is useful for color-quantization.

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