جدول المحتويات

مجلة ديالى للعلوم الصرفة

ISSN: 83732222
الجامعة: جامعة ديالى
الكلية: العلوم
اللغة: Arabic and English

This journal is Open Access

حول المجلة

مجلة جامعة ديالى للعلوم الصرفة مجلة علمية فصلية تصدر عن كلية العلوم في جامعة ديالى وباللغتين العربية وألأنكليزية وتهدف للمساهمة في تطوير المعرفة وذلك بنشر البحوث الأصيلة والمراجعات في مختلف العلوم الصرفة والتطبيقية، بحيث تكون سجلاّ للدراسات في هذين المجالين.

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معلومات الاتصال

admin@sciencesmag.uodiyala.edu.iq
diyalajps@yahoo.com

جدول المحتويات السنة: 2017 المجلد: 13 العدد: 1 - part 1

Article
Study the Morphological and Mechanical Properties of Ultra-high Molecular weight polyethylene UHMWPE: Polytetrafluroethylene PTFE binary blends
دراسة الخواص الميكانيكية و المجهرية للخلائط الثنائية لبولي اثيلين عالي الوزن الجزيئي (PTFE): بولي تترا فلورواثيلين UHMWPE

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الخلاصة

In this research, it has been investigated the effect of addition High performance polymer Polytetrafluroethylene (PTFE) on the Ultra-high molecular weight polyethylene (UHMWPE) mechanical and physical properties. It has been prepared three types of blends (95:5, 90:10 and 85:15) of UHMWPE: PTFE by compression method. Stress-Strain curves of polymer blends have been showed that higher ultimate strength and Young modulus were at 95:5 and decreased gradually as wt. % PTFE increased. FTIR inspection has been also accomplished. Finally SEM results showed incompatibility between the polymers with presence of boundaries between the binary polymers phases.


Article
Study of the relationship between Toxoplasmosis disease and progesterone , Testosterone , Estradiol and Hormone Prolactin Among for abortion women in Diyala government
دراسة العلاقة بين مرض داء المقوسات على هرمونات البروجستيرون وتستوستيرون وأستراديول والبرولاكتين لدى النساء المجهضات في محافظة ديالى

المؤلفون: Aws Zamil اوس زامل عبد الكريم
الصفحات: 1-12
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الخلاصة

The study deal with relationship of Toxoplasmosis disease for abortion women and the level of sex hormone, the study conducted through the period of 1 march until 30 June, 84 serum sample collected to detect a specific antibodies of Toxoplasmosis Igm, IgG using the ELISA technique, samples were classified into two groups : chronic toxoplasmosis (41) and acute toxoplasmosis (24) with a (19) sample wasn’t infected used as control group,The results showed statistical analysis at the level of probability of 0.001 signifferences as hormone got Estradiol on (1147 pg/ml ) and prolactin (31.5 ng/ml) and testosterone (1.155 ng/ml) was high compared to the control, while progesterone hormone was not affected by disease and chronic toxoplasmosis and showed the results of statistical analysis at the level of 0.001 significant differences reaching progesterone (52.62 ng/ml) ievel was high and hormone Estradiol (1.357 pg/ml) is low compared to compared to control was affected by the hormone prolactin and testosterone disease acute toxoplasmosis at the level of hormones depending on age groups and found that (25-20) most affected.


Article
Virulence Factors of Acinetobacter baumannii isolated from different clinical specimens in Baquba
دراسة عوامل الضراوة في جرثومة Acinetobacter baumannii المعزولة من مصادر سريرية مختلفة في بعقوبة

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الخلاصة

The study included isolation and identification of 16 isolates of Acinetobacter baumannii out of 196 samples collected from different clinical specimens in Baquba Teaching Hospital and Al-Batool Teaching Hospital from 1/10/2014 to 16/2/2015. The highest isolation rate of these bacteria from wounds and burns was (10.8% , 8.3%) respectively , and urine was 6.9% , the blood culture were to contain less proportion of these bacteria 5% . The diagnosis of isolates was based on phenotypic , microscopic characteristics and biochemical tests , in addition to use ViTEK2 device to confirm the diagnosis. The results of the investigation of virulence factors of Acinetobacter baumanniishowed that all isolates have the ability to adhere on surfaces of epithelial cells of humans (100%), while the ability of 13 isolates to produce biofilm was 81.2% , while Seven isolates had possessed efflux pumps with high efficiency (43.7%) .The investigation of the sensitivity test against4 antibiotics from B-lactam group , the results showed the highest percentage was resistant to antibiotic Cephalexin 100% and lowest resistance to antibiotic Imipenem 50% .It was determined the Minimum Inhibitory Concentration MIC for cefotaximeand ceftazidime by method of multiplying serial concentrations , the results inducted that the minimum inhibitory concentration for cefotaxime values ranging between 32-1024 μg/ml , as for the MIC ceftazidime his values ranging between 16-1024 μg/ ml.


Article
Minimizing Three Hierarchically Criteria on a Single Machine
تصغير ثلاثة مقاييس بالطريقة الهرمية على الماكنة الواحدة

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الخلاصة

The problem of minimizing a function of three criteria maximum lateness, maximum earliness and sum of completion time in hierarchical method is discussed in this paper. A set of n independent jobs has to be scheduled on a single machine that is continuously available from time zero onwards and that can handle no more than one job at a time. Job j (j=1,2,…,n) requires processing during a given positive uninterrupted time pj. Some algorithms to find exact and best possible solutions are proposed for the problem of three criteria maximum lateness, maximum earliness and sum of completion time in hierarchical case.


Article
Anatomical and Phytochemical Study of Glossostemon bruguieri (Desf.) Sterculiaceae in Kurdistan Region of Iraq
دراسة تشريحية كيمياوية للنوع (Glossostemon bruguieri (Sterculiaceae النامية في اقليم كوردستان العراق

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الخلاصة

Glossostemon bruguieri named "ARAB QŌZI" or "MOGHAT", which is used in the traditional medicine for treatment various ailments, where no such study has been conducted so far. This investigations report for the first time the anatomical characters and identify the chemical constituents of methanolic extract for different parts of G. bruguieri by using modern sensitive gas chromatography – mass spectroscopy (GC-MS).The microscopic study showed the present of internal duct in all studied parts ,also present of oil drops in the cells of root ,cells with special bodies near the vascular bundle of leaves and its petioles and the present of (Stellate, dendroid and multicellular glandular) trichome in aerial parts of the plant. GC-MS analysis revealed the presence of many compounds in different parts of G. bruguieri different between the parts in relation to the anatomical structure which reflex the importance of the aerial parts of the plant in addition to traditional use of root.


Article
Spectrophotometric determination of Naproxen in the pharmaceutical Preparations Via Oxidative Coupling of Naproxen with Ansidine
التقدير الطيفي للنابروكسين في المستحضرات الصيدلانية بالأقتران التاكسدي وبإستخدام كاشف الأنسدين

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الخلاصة

The development of a spectral method to estimate Naproxen by the oxidative coupling with the reagent of ansidine in the presence of oxidized agent N- Bromo succinimid in the acidic medium of Acetic acid to form a purple color soluble in water, showing a highest absorption at the λMAX 562 nm and according to Beer law in a concentration ranging between (1-28mg. ml-1). molar absorpitivity value reached 8.878*103L. mol-1 . cm-1 , Sandal sensitivity of 0.0350 mg cm-2 , the detection limit 0.045mg. mL-1, relative standard deviation of the method doesn’t exceed 1.24% the method has been successfully applied for the determination Naproxen in Tablets both the direct and standard additions methods ranged and found to be of 99.38-100.003%. A statistical treatment of results has been adopted using T and F at confidence interval 95℅ , to compare it with the results of standard addition method. The results of statistical treatment and showed there was no significant difference between both ways and ,as a result of that, the suggested method is valid for the application on pharmaceuticals.


Article
Thermodynamic Characterization of Binary Mixtures of Smectic Phase Liquid Crystals
تشخيص ثرموديناميكي لمزائج ثنائية لبلورات سائلة سمكتية الطور

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الخلاصة

The binary mixture of 1-(para-Chloro benzylidene amino) -4-(2-n-hexylthio-1,3,4-oxadiazole-5yl) benzene and 1-(para-Nitro benzylidene amino)-4-(2-n-hexylthio-1,3,4-oxadiazole-5yl) benzene with different mole fractions has been characterized by a hot stage polarizing optical microscope (POM) to determine the type of texture, then investigated by differential scanning calorrimetry (DSC) technique to determine the specific enthalpies and transition temperatures of phases. The enthalpies of mixing have been calculated to suggest the molecules type. Continuously, The thermodynamic excess quantities (GE, SE and HE) were calculated by utilizing activity coefficient value of eutectic and isotropic phase, so molecular interactions behavior was described.


Article
Synthesis and characterization of some palladium (II) complexes containing mixed lignds of Benzylamine and N-dimethyBenzylamine with lignds Sodium saccharinate and Thiosaccharine
تحضير وتشخيص بعض معقدات البلاديوم (II) الحاوية على مزيج من ليكاندات البنزيل امين و ثنائي مثيل بنزايل امين مع ليكاندات السكارين والثايوسكارين

المؤلفون: Mousa Saliem Hussein موسى سليم حسين
الصفحات: 46-61
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الخلاصة

The complex [Pd(BAZ)2Cl2 ] was prepared by treatment of Na2PdCl4 with banzylamine(2:1)after addition two mole of(tsac, sac) to [Pd(BAZ)2Cl2 ] to give [Pd(BAZ)2(tsac)2], [Pd(BAZ)2(tsac)2] ).(BAZ) ligand in these complexes behaves as a monodentate coordinate to the palladium through the (N) atom of amine group while( sac) coordinate to the palladium through the (N) atom while (tsac) is prepared by bonded through (S) atom of thiol group. were the two another complexes were treatment of one mole of [Pd2(N-BAZ)2(μ-Cl)2] with two moles of (Nasac) or (Htsac) to affared [Pd2(N-BAZ)2(μ-sac)2], [Pd2(N-BAZ)2(μ-tsac)2] ligand (tsac, sac) in these complexes behaves as a bidentate bonded to palladium through (N) atom of amine group and (C) atom of benzene ring while (sac) behave as abridging bidentate bonded through (N) atom and (O) atom of the carbonyl group while (tsac) behaves as abridging bidentate bonded through (N) atom and (S) atom of thiol group to palladium.


Article
Synthesis of some heterocyclic compounds derived from 1-Aryl-3-(4-hydroxy-3-methoxyphenyl) propene-1-one
تحضير بعض من المركبات الحلقية غير المتجانسة المشتقة من 1- اريل -3-(4-هيدروكسي-3-ميثوكسيفنيل) بروبين-1-اون

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الخلاصة

A series of heterocyclic compounds have been synthesized using 1–aryl-3-(4-hydroxy-3-methoxypheny) prop-2-ene-1-one (1-4) as starting material which was prepared by claisen-schmidt condensation between vanillin and substituted acetophenone.Benzoxazepine derivatives (5-8) and benzodiazepine derivatives (9-12) were synthesized from the reaction of o-aminophenol, o-phenlendiamine with compounds (1-4) respectively. Thereaction of compounds (1-4) with hydrazine hydrate afforded pyrazol derivatives (13-16). While the reaction of compounds (1-4) with hydrazine hydrates in the presences a few drops of glacial acetic acid gave 1- acetyl pyazol derivatives (17-20). Oxirane derivatives (21-24) were synthesized from the reaction of compounds (1-4) with hydrogen peroxide in the basic medium. Reaction of phenylthiourea with compounds (1-4) afforded pyrimidinethion derivative (25-27).Finally isoxazol derivatives (28-31) were synthesized by the reaction of compounds (1-4) with hydroxylamine hydrochloride in presences of triethylamine.


Article
Antimicrobial activity of Borago officinalis leaves extract against Staphylococcus Spp. and Streptococcus pyogenes
دراسة فعالية مستخلص اوراق نبات لسان الثور Borage officinalis ضد بكتريا Streptococcus pyogenes و .Staphylococcus spp

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الخلاصة

The current study was conducted to evaluate the antimicrobial activity of Aqueous and alcoholic extracts (hot) of Borago officinallis leaves against types of bacteria that include Staphylococcus aureus, Staphylococcus epidermides and Streptococcus payogene, the results showed inhibitory effect of both extracts against bacteria. A photochemical screening of both extracts was revealed the presence of (Tannins, Alkaloids, Risine , Saponin , Phenols , Flavonoides and Glycosides). Sensitivity test of isolates to antibiotics was studied and most of them were resistance to Ceftazidim, Chloramphinicol, Cefotaxime, Amoxicillin and Ampicillin. Most of isolates were sensitive to Amoxicillin /Clavulanic acid and Penicillin (G). All the isolates showed high sensitivity to Norfloxacin and Gentamicine 100%. The results show Synergism effect when Combination of Ceftazidime and Amoxicillin with hot (aqueous and alcoholic) extracts of Borago officinalis on the different type of bacteria.


Article
On The Product Of Positively Defined Operators
حول حاصل ضرب المؤثرات المعرفة تعريفا ايجابيا

المؤلفون: Mahmood Kamil Shihab محمود كامل شهاب
الصفحات: 74-77
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الخلاصة

The main result is to prove that the product of two positively defined operators is positively defined if and only if it is normal. In general, the normality is required can not be dropped.


Article
Evaluation of Antimicrobial and Antioxidant activity of secondary metabolites isolated from endophytic bacterium Bacillus megaterium isolated from wheat root in Iraq
تقييم الفعالية الضد ميكروبية والضدتأكسدية للايض الثانوي المعزول من بكتريا Bacillus megaterium المعزولة من النسيج الداخلي لجذور نبات الحنطة في العراق

المؤلفون: Rashid Rahim Hateet رشيد رحيم حتيت
الصفحات: 78-88
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الخلاصة

The present study was carried out to find out the antimicrobial activity of endophytic bacteria isolated from wheat plant root by surface sterilization method. Bacterial strain was identified as Bacillus megaterium. Secondary metabolites was carried out by ethyl acetate solvent .Secondary metabolites were demonstrated for antimicrobial activity against Gram-:Negative Bacteria namely; Escherichia coli ,Salmonella typhi and Pseudomonas aeruginosa which range between (16.5-31.0)mm and range between(29.5-33.0)mm against Gram-Positive Bacteria and antifungal activates tested against yeasts test namely; Candida albicans with inhibition zone 16.0mm and 12.0mm against Candida kruzi. Minimum inhibitory concentrations were in the range between (6.25- 12.25) and (3.12-25.0) μg/ ml against Gram-Negative and Gram-Positive bacteria respectively and(50)μg/ml against yeasts test and minimal bactericidal concentrations ranged from (12.5 to 25.0) μg/ ml and (6.12-50)μg/ ml against Gram-Negative and Gram- -Positive bacteria respectively and minimal fungicidal concentrations (100) μg/ ml against yeasts. The antioxidant activity was analyzed using2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging assays have shown high rates of inhibition .A verification of non toxicity of the bacterial secondary metabolites against human blood revealed a negative test. The metabolite produced by the endophytic bacteria could be an alternative source of antimicrobial and antioxidants.


Article
Effect of Melia azedarach on The Reproductive Efficiency in Female Rabbits
تأثير نبات السبحبح Melia azedarach في الكفاءة التناسلية لإناث الأرانب

المؤلفون: Mayada Nazar Al-Khafaji ميادة نزار الخفاجي
الصفحات: 89-102
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الخلاصة

Various types of contraceptives were developed. These contraceptives are prepared from natural as well as synthetic sources. The study was conducted on 15 mature adult females, and males of rabbits.10 from each female and male rabbits were treated with Melia azedarach in powder form at a dose rate of 6 g / kg b.wt. orally mixed with feed daily for 53days, the remaining 5 from each of female and male rabbits remain non treated. In 28th day post exposure to Melia; the animals were divided into 3 groups. Group I represented females non treated with plant crossed with treated males. Group II represented treated females crossed with non treated males. Group III represented non treated females crossed with non treated males. The mixing continued for 10 days. All females were examined for pregnancy by sonar weekly. At 56th day post treatment with plant 3 females from each group were killed, while others 2 female rabbits were left till birth. Size, weight and characters of naturally birthed fetuses and those found during explore the uterine horns of killed rabbits were fixed. Other dependent parameters in this study were hematological and some of constituents of serum. The results of the study revealed a non significant decrease in body weight, body temperature, heart rates, respiratory rate, clotting time and bleeding time. Erythrocytes counts, PCV, MCV values were not significantly increased in treated group, while in non treated group these were not significantly decreased. Hb, MCH, MCHC were not significantly changed in both groups. Total leucocytes count in treated group were decreased, whilst increased in non treated group. Heterophils% were decreased in treated group. Lymphocytes percentage in treated group were increased, on other hand monocytes, eosinophil and basophils percentages did not show any significant changes. The results revealed that infertility index was 0, 20 and 100% in group I, II and III respectively. Significant decrease in numbers, body weight, body length and width of skull of fetuses from females treated with extract of Melia, and those crossed with treated male in comparison with those of non treated females and males. The results revealed that treatment with Melia extract for 53 days did not affect the length of pregnancy in female treated with Melia extract. The results revealed that levels of ALT, AST and AP were higher in treated females in comparison with those of non treated rabbits. Values of FSH, LH, Prolactin and testosterone were less than normal levels,


Article
The aggregation and segregation in wild plants at degradation environment at Muradia, Baquba, Iraq
التجمع والتفرق في النباتات البرية في بيئة متدهورة في المرادية، بعقوبة، العراق

المؤلفون: Alhan M. Alwan الحان محمد
الصفحات: 103-116
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الخلاصة

The study was conducted in October to November 2015 at the neglected and degradation area at the University of Diyala of abandoned spaces, without planting or building between Science and Agriculture Colleges, about 2500m2. Soil were bulldozed and paved dirt road in its. In this degradation area were found 17 wild plant species belonging to 10 families, (5 species are Poaceae, and 2 species are Fabiaceae). Chosen. 9 species as target plants, because they relatively abundance. The targets plants were: Alhagi graecorium, Capparis spinosa, Cynodon dactylon, Imperata cylindrica, Lycium shawii, Phragmites australis, Prosopis farcta, Shanginia aegyptica, and Sorghum halepanse. Those individuals species plant were taken at central of quadrates for six replicates, in 100cm radius, which record all the species within four regions, 25, 50, 75, and 100 cm. The results showed that A. graecorium, C. dactylon, I.cylindrica, P australis, and S. aegyptica were surrounded by about same species (aggregated species). Whereas C. spinosa, P. farcta and L. shawii and S. halepanse surrounded by different species (segregated species), which dependent on abundance values for each one. Sample of soil have been taken under the same plants in six replications. The control soil samples were taken from the spaces between the plants. pH, electrical conductivity (EC), and organic matter (OM) were measured. The results showed that pH under L. shawii and C. dactylon gave closed value and had significant difference with the rest of species. The electrical conductivity was found to be closed value C. spinosa and S. bicolor with each other and the values of low in significant difference with the rest of the target species. Control treatments is significantly different from other in organic matter.


Article
Study the possible role of CMV and EBV infections to initiate high blood pressure in some groups of hypertensive Iraqi patients
دراسة الدور المحتمل للإصابة بالفيروس المضخم للخلايا و فيروس ابشتاين بار في ارتفاع ضغط الدم في بعض الفئات من المرضى العراقيين المصابين بارتفاع ضغط الدم

المؤلفون: Jasim M. Muhsin جاسم محمد محسن
الصفحات: 117-129
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الخلاصة

The main purposes of this study were to find out the possible correlation of CMV & EBV infections with high blood pressure initiation in some groups of hypertensive Iraqi patients, also to determine the relationship of between EBV & CMV infections with some clinico – pathological factors which were involved in this study. The present study was designed as a prospective research with (90) serum samples as (45) specimens from hypertensive patients (cases) and another (45) specimens from individuals with normal blood pressure (controls), collected from Baghdad teaching hospital & teaching laboratories Medical city Baghdad, from the period of March (2015) to April (2015). All samples had been subjected into ELISA test for CMV IgG & EA EBV IgG detection in private laboratory , from the period of 1st – 8th of April (2015). Statistically significant differences detected in the presence of IgG to CMV (p = 0.006 ) and EBV-EA IgG (p= 0.01) regarding to the negative results of selected study groups. According to the history of heart diseases it was with high significant difference (p= 0.000) regarding to the CMV IgG positive results comparing with the presence of EA EBV IgG (p= 0.084). Interestingly, the positive results of CMV IgG & EA EBV IgG were associated with hypertension progression. Finally, the EBV & CMV infection maybe play a significant role in the increasing of the blood pressure as a suitable co-factors.


Article
Heavy Metals Tolerance and Antibiotics Susceptibilty Profiles of Staphylococcus aureus Strains Isolated From Clinical Sources in Baquba city
نسق التحمل للمعادن الثقيلة والحساسية للمضادات الحيوية لبكتريا Staphylococcus aureus المعزولة من مصادر سريرية في مدينة بعقوبة

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الخلاصة

Twenty- one Staphylococcus aureus isolated from various clinical samples (wound , ear , pus , urin and burn ) collected from Baquba General Hospital over a period ( April 2015 to June 2015 ).Out of 21 Staphylococcus aureus isolates , 17 (80.95%) were resistant to methicillin , while 4 (19.04%) were methicillin susceptible. Results of antimicrobial susceptibility showed high resistance to amoxicillin , amoxicillin/clavulanic acid , trimethoprime and cefotaxime with ratio 100% , 76.1% , 76.1% and 71.4% respectively, while isolates resistant oflaxacin with 4.7%. The results showed that 15 isolates of the total (21) of Staphylococcus aureus could produce β-lactamase with percentage (71.4%) , 5 isolates produce of Metalloβ-lactamase with (23.80% ) , and 4 isolates (19.04%) produce ESβLs. Staphylococcus aureus isolates have ability to tolerant the highest concentration of heavy metals like (Cobalt , Copper , iron , Mercury , Zinc) with ratio (57.1% , 52.3% , 66.6% , 33.3% , 61.9%) respectively. Additionally result of plasmid profile presented that all isolates of Staphylococcus aureus contained two band s of plasmid vary in size . Plasmid curing was carried out by acridin orang (256μg/ml) , cobalt and zinc resistance character was found to be present on the chromosomal DNA rather than the plasmid DNA whereas iron , copper and mercury resistance characters were found to be present on the plasmid . Curing result showed the loss of antibiotic and heavy metal resistance property for (cefotaxim , amoxicillin , erythromycin , ciprofloxacin , iron , copper and mercury ) from the isolates and confirms a relationship between antibiotic and heavy metal resistance with plasmid.


Article
Influence of Thickness Variation on Optical Properties of (Poly Vinyl Alcohol : violet Methyl) Composite
تأثير اختلاف السمك على الخصائص البصرية لمركب (بولي فينيل الكحول : المثيل البنفسجي)

المؤلفون: Yaqoob M. Jawad يعقوب محمد جواد
الصفحات: 145-153
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الخلاصة

Poly(vinyl alcohol) doped by (Violet methyl) films with different thicknesses were prepared by casting method . The effects of thicknesses on the optical Characterization of poly (vinyl alcohol) films have been studied. The films show indirect allowed interband transitions that influenced by the thicknesses , the optical energy gap has been increased with increasing the thickness and the localized tail widths have been decreased with increasing the thickness.


Article
Semantic Pattern Recognition Based on Linear Algebra and Latent Semantic Analysis
تمييز نمط الدلالي بالاعتماد على الجبر الخطي والتحليل الدلالي الكامن

المؤلفون: Amjed Abbas Ahmed امجد عباس احمد
الصفحات: 154-165
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الخلاصة

Pattern recognition is a process of identifying vector of correlated/uncorrelated attributes and discriminate it among other patterns. Pattern recognition is synonymous to machine learning, data mining and Knowledge Discovery in Database (KDD).In this research work we investigate decomposing pattern (i.e., attribute vector) space into subspaces in which patterns cluster around basis of the subspaces. This paper introduces a theory which states that in case of having space of vectors and having basis then Signal Value Decomposition (SVD) can perform excellent in discovering thesis basis, hence, in pattern recognition a space can be decomposed to sub-spaces to reach clustering around basis. Results are collected and discussed and it has proven that SVD and its extension Latent Segment Analysis (LSA) can optimize the process of machine learning and showed a great tendency to converge toward cognitive based recognition.


Article
A new Algorithm for Encrypt Arabic Text by using first Order Equation for Three Variables
الخوارزمية الجديدة لتشفير النصوص العربية باستخدام معادلة من الدرجة الاولى لثلاث متغيرات

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الخلاصة

In this days many data exchanged over the Internet, so finding the best solution that offer the necessary protection against the information hackers becomes the basic goals of many researches. Many researches focus on the Encryption algorithms that play a main role in information security systems. The goal of every encryption algorithm is to make it as hard as possible. If a good encryption algorithm is used, there is no technique considerably better than trying every possible key to break the cipher text. It is difficult to define the quality of an encryption algorithm. Sometimes algorithms look strong and complicated but turn out to be very easy to break.In this research, a new encryption method is proposed to encrypt Arabic text by using the standard of first order equation for three variables. The sender and the recipient will share a first order equation for three variables and two randomly constants represent the values of y, z which represent the keys of used in encryptiondecryption process. The result of the equation xored with randomly shared value between both sides which is represent the third key for the proposed method to get final cipher text of the proposed method. By applying different cryptanalysis techniques such as berlekamp Massey cryptanalysis, linear feedback shift register (LFSR), autocorrelation attack, brute force attack , frequency attack, m-138 cipher text only attack and side – channel attack to test the inevitability of the proposed method, the results showed that the proposed method is hard to be broken by the crypt analytics and attackers. Moreover, comparing the timing and performance of the proposed method with the block and stream ciphers showed the proposed method is better than the block and stream ciphers in these measures.


Article
Retrieving Encrypted Query from Encrypted Database Depending on Symmetric Encrypted Cipher System Method
استرجاع الاستعلام المشفر من قاعدة البيانات المشفرة بالاعتماد على طريقة تشفير متماثلة

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الخلاصة

More and more data is available on database every day. The greater the amount of data in database led to create a problem in process and retrieving the required data. Security is one of the significant challenges that people are faced over the entire world in every aspect of their lives. Databases are vulnerable to attack from internal and external threats. One of security dialogues is data encryption/decryption whenever data being transmitted over communication lines may be protected by encrypting the data, which can be decrypted only by the authorized person. The retrieval from big encrypted database stills a big problem. The proposed system presents a new method used to retrieve data from (encrypted database; encrypted compressed database or encrypted dynamic clusters). These data retrieved represents the answers to the user query. In this research the retrieving from big encrypted database was processed by matching cipher query with encrypted database. The proposed system uses clustering technique to build block of data according to the encrypted user query (entries or requirements). The comparison includes the retrieving time that was required from matching plain query with plain data and cipher query with cipher data. In traditional system the retrieving was done by decrypting the entire database or decrypting part of it to find the data that matched the user query. This would be consumed too large time. The work of this paper allows to the users to query over encrypted database without decrypting the database, instead of that, it work on comparing cipher query with encrypted database and retrieving the results in cipher form. The data retrieval process is considered the main objective of this research and not the encryption process. So, the simple encryption operation was used to measure the performance of the data retrieving method (by matching encrypted query with encrypted data).

جدول المحتويات السنة: المجلد: العدد: