حضرت جسيمات أوكسيد الزنك النانوية ZnO (NPs) بطريقة كيميائية رطبة عند درجتي حرارة مختلفتين (30-90) ̊C باستخدام كلوريد الزنك كبادئ في وسط مائي. تم توصيف جسيمات أوكسيد الزنك النانوي المحضر  باستخدام المجهر الإلكتروني الماسح (SEM) ,حيود الأشعة السينية (XRD) ، وطيف الأشعة تحت الحمراء (FTIR) ، أشارت أنماط الأشعة السينية الى بنية  سداسية (wurtizte) بمتوسط حجم بلوري (19.5-23nm) لجسيمات أوكسيد الزنك  المحضرة عند درجتي الحرارة (30-90 ̊C)على الت

صممت هذه الدراسة للكشف عن التاثير الوراثي للمستخلص الميثانولي لنبات الخلة على معامل الانقسام الخلوي,تكون النوى الصغيرة و مدى تاثيره على تحطم الدنا الوراثي في الفئران المستحثة بعقار الميتوزانترون (المضاد للسرطان). استخدمت في هذه الدراسة اربعه مجاميع للفئران: المجموعه الاولى(السيطرة الموجبة )الفئران المعاملة بعقار الميتوزانترون بتركيز (0,008 ملغم\فارة) والمجموعه الثانية (السيطرة السالبة) الفئران الغير معامله

أورام الدماغ هي نمو غير طبيعي أو كتلة من الخلايا في أنسجة المخ او ما حولها وتكون نوعان إما خبيثة (سرطانية) أو حميدة (غير سرطانية) ، يمكن لأورام الدماغ أن تصيب الأطفال وكذلك البالغين. وقد تؤثر أورام الدماغ على وظائف الدماغ البشري إذا نمت بشكل كبير بما يكفي للضغط على الأنسجة المحيطة. يعتبر ورم الدماغ خطيرًا بطبيعته ويهدد الحياة. يعتمد تشخيص ورم الدماغ على الأطباء المتخصصين، ولكن في بعض الأحيان يعطي أطباء الدماغ

Citrus fruit contain variety of flavonoids such as Hesperidin (the principal flavonoid in oranges and grapefruit). Hesperidin is found in high concentration in fruit peel of oranges and in substantially lower concentration in juice of these fruits. Hesperidin was extracted from oranges peel by treating the peels with calcium hydroxide. HPLC technique was used to determine hesperidin. Hesperidin was saperated and purified in a purity of about 90.1-95.7% and yield about 1.5 %w/w from oranges peel dry powder. Both hesperidin and oranges peel extract showed significan antibacterial activity. Sensitivity to hesperidin and oranges peel extracts were not similar for the chosen bacteriaCrude orange peel extract gave a various antimicro

    لتكن  حلقة ابدالية أحادية، وليكن   مقاساً ايسر احادي. بيان تقاطع صغير من النمط-g للمقاس  يرمز له  ,  هو بيان غير مباشر بسيط رؤوسه تقابل كل المقاسات الجزئية غير التافهة في  وكل رأسين مختلفين متجاورين أذا وفقط أذا كان التقاطع بينهما هو صغير من النمط-g. في هذا المقال، تم دراسة العلاقة بين الخصائص الجبرية الى   والخصائص البيانية الى   . أعتبر خصائص مثل الترابط، الكمال. علاوة على ذلك، يتم تحدد القطر و الطوق الى ،

Proved the validity of all mixtures or not to accept the bees and then resistant infection worm wax Minor has accepted honey bee colonies all mixtures beeswax with paraffin wax industrial all ratios used made ??of a mixture to DVD waxy full and used naturally in breeding Houdnth In store honey and pollen evendiversified Bravian and natural wax

In vitro tests have been carried out to find out the efficacy of watery extracts of garlic Allium sativum and hot pepper Capsicum spp. against the trophozoites of Entamoeba histolytica cultivated in liver infusion agar media at 37 c . The doses of ( 0.01, 0.05 ,0.1, 0.5, 1 ml )of garlic and hot pepper watery extracts were added to certain number of E. histolotica trophozoits for exposure time of 24 hrs., the mortality percentage of trophozoites treated with garlic extract were ( 14.82 %, 31.05% ,46.16% , 64.29% , 92.7%) respectively , these percentages were very close to that obtained from the treatment with the hot peper extract which were (17.86%, 32% , 44% ,66.67% ,100%) respectively . Generally these results showed that the ga

Java is a high-level , third generation programming language were introduced Javaoptics Open Source Physics (OSP) as a new simulation for design one of the most important interference optical coating called antireflection coating. It is recent developments in deign thin-film coatings. (OSP) shows multiple beam interferences from a parallel dielectric thin film and the evolution of reflection factors. It is simple to use and efficiently also can serve educational purposes. The obtained results have been compared with needle method

the study covered theoretical concering parial molal volume the applicability of jones-dole equation

The main goal of this paper is to introduce and study a new concept named d^*-supplemented which can be considered as a generalization of W- supplemented modules and d-hollow module. Also, we introduce a d^*-supplement submodule. Many relationships of d^*-supplemented modules are studied. Especially, we give characterizations of d^*-supplemented modules and relationship between this kind of modules and other kind modules for example every d-hollow (d-local) module is d^*-supplemented and by an example we show that the converse is not true.

New series of Schiff bases 2(a-j) and corresponding beta-lactam derivatives 3(a-j) were synthesized from cefalexin (1) as starting material. The compound (1) was reacted with different aldehydes and ketones to give Schiff bases derivatives 2(a-j). The synthesized Schiff bases were cyclized by chloroacetyl chloride in the presence of triethylamine to form beta-lactam derivatives 3(a-j). The compounds were characterized by deremination melting point, FT-IR and 1H NMR. The beta-lactam derivatives were screened in vitro antibacterial against some bacterial species

Some esters were prepared from reaction of different molecular weight of PVA with some acid chloride (prepared by reaction of acid with thionyl chloride or phosphorous pentachloride)in the presence of pyridine. The thermal and reological properties were studied. The increasing Of bulky groups decreasing stability of the thermal and reological properties.

74 fanners were randomily selected from the Lc:ital. of 406 fanners using the Modern Irrigation System up to November , 2000 , for the purpose of wide adoptation of such system. Rcsults indicated according to the data which has been obtained and statistically analysed by the statistical package for the Social Sciences (SPSS) program showed that the majority of the farmers adopted this new system of irrigation due to the increase in the yield up to 5" .

في السنوات القليلة الأخيرة، أصبحت التطبيقات التي تستخدم إنترنت الأشياء (IoT) في غاية الأهمية لأنها تسهل التفاعلات المستمرة والسلسة بين البشر والأجهزة من أجل تحسين نوعية الحياة. مع زيادة الأجهزة المستخدمة في التطبيق لإجراء عمليات سلسة وفعالة، أصبحت كمية البيانات التي يتم إنشاؤها عالية. اليوم، ظهرت حوسبة الضباب كنسخة موسعة من البنية التحتية السحابية التي توفر خدمات قابلة للتطوير بدرجة كبيرة وتدرك زمن الاستج

Dates are considered one of the most important foods consumed in Arab countries. Dates are commonly infested with the sawtoothed grain beetle, Oryzaephilus surinamensis. Consequently, the date yield, quantity, and quality (economic value and seed viability) are negatively affected. This study was designed to investigate the effectiveness of air evacuation as eco-friendly and safe control method against adult O. surinamensis. Insects were obtained from the infested date purchased from a private store in sakaka city, Aljouf region, Saudi Arabia. Air evacuation (using a vacuum pump) and food deprivation were applied to O. surinamensis, and insect mortality was observed daily in comparison with the control group (a

The mutagenic effect of some crucifers widely consumed Lepiduim sativum (Garden cress) and Arugula (Eruca sativa) was studied in comparison to carrot (Daucus carota), using bacterial mutagenic system composed of three bacterial isolates; (Bacillus spp)G3 (Arthrobacter spp)G12, and (Brevibacterium spp)G27 ,. Treatment of isolates with plant extracts led to reduction in survival fraction (Sx)at different levels except that Aurgula extract did not show any inhibitory effect in isolates G12 and G27. Crucifers extracts induced streptomycin resistant mutants in G12 at higher level than G3 , but not in G27. No resistance to rifimpacin was detected in all isolates.

A series of new compounds including p-bromo methyl pheno acetate [2]. N-( aminocarbonyl)–p-bromo pheno acetamide [3] , N-( aminothioyl) -p-bromo phenoacetyl amide [4], N-[4-(p-di phenyl)-1,3-oxazol-2-yl]-p-bromopheno acetamide [5],N-[4-p-di phenyl]-1,3-thiazol-2-yl-p-bromo phenoacet amide [6], p-bromopheno acetic acid hydrazide [7] , 1-N-(p-bromo pheno acetyl)-1,2-dihydro-pyridazin-3,6- dione [8], 1-N-(p-bromo pheno acetyl)-1,2-dihydro-phthalazin-3,8- dione[ 9], 1-(p-bromo pheno acetyl)-3-methylpyrazol-5-one [10] and 1-(p-bromo phenol acetyl)- 3,5-dimethyl pyrazole [11] have been synthesized. The prepared compounds were characterized by m.p.,FT-IR and 1H-NMR spectroscopy. Also ,the biological activity was evaluated .

In this paper the new starting material 2-(5-chloro-1H-benzo[d]imidazole-2-yl) aniline (1) was synthesized by the condensation reaction of 4-chloro-o-phenylenediamine and anthranilic acid .The new Mannich base derivatives were synthesized using formaldehyde and different secondary amines to synthesize a new set of benzimidazole derivatives(2-5). Also, the new Schiff-base derivatives (6-10) were synthesized from the reaction of compound (1) with various aromatic aldehydes and the closure-ring was done successfully using mercapto acetic acid to get the new thiazolidine derivatives(11-12).These new compounds were characterized using some physical techniques like:FT-IR Spectra and 1HNMR Spectra.

A simple, accurate and sensitive spectrophotometric method for the determination of Procaine penicillin (PP) is described. The method is based on charge-transfer reaction of PP with metol (N-methyl-p-hydroxy aniline) in the presence of ferric sulphate to form a purple-water soluble complex ,which is stable and has a maximum absorption at 510 nm .A graph of absorbance versus concentration shows that Beer’s low is obeyed over the concentration range of 3-80 µg /ml of PP (i.e.,3-80 ppm) with a molar absorbativity of 4.945 ×103 L.mol-1.cm-1 ,Sandell sensitivity of 0.1190 µg cm-2 ,a relative error of (-1.57)-2.79 % and a standard deviation of less than 0.59 depending on the concentration of PP.The optimum conditions for full co

An experiment was conducted at botanical garden of Department of Biology ,College of Education (Ibn-AL –Haitham ,University of Baghdad during winter season of 2010 -2011.The aim of prsent study is to investigate the effect of Garlic (Allium sativum) extract and root extract of Ginger(Ziniber officinale)in two concentration of both extracts (20% and 30%)on growth and yield of (Cicer arietinum).The result showed that both extracts increased plant hight ,Chlorophyl content ,relative growth rate (RGR).Absolute growth rate (AGR),seeds yield .seed weight average ,biological yield ,carbohydrate and protein percentages in seeds,in comparsim with control plants .

The purpose of the present work is to calculate the expectation value of potential energy for different spin states (??? ? ???,??? ? ???) and compared it with spin states (??? , ??? ) for lithium excited state (1s2s3s) and Li- like ions (Be+,B+2) using Hartree-Fock wave function by partitioning techanique .The result of inter particle expectation value shows linear behaviour with atomic number and for each atom and ion the shows the trend ??? < ??? < ??? < ???

يستخدم العاملين في الرعاية الصحية التعلم الآلي أكثر فأكثر في السنوات الأخيرة لتعزيز نتائج المرضى وخفض التكاليف عليهم. بالإضافة إلى ذلك، تم تنفيذ التعلم الآلي في مجالات مختلفة، بما في ذلك تشخيص الأمراض، وتصنيف مخاطر المرضى، واقتراحات العلاج المخصصة، وتطوير الأدوية. يمكن لخوارزميات التعلم الآلي أن تفحص كميات هائلة من البيانات من السجلات الصحية الإلكترونية، والصور الطبية، ومصادر أخرى لتحديد الأنماط والتنب

الصور الرقمية هي أحد المصادر ذات الهيمنة العالية للمعلومات والاتصالات في العصر الحديث. ولكن يمكن بكل بساطة تغيير الصورة والتعديل عليها بسبب وفرة الادوات لتحرير الصور. يمكن أن تنتقل هذه الصور التي تم التعديل عليها عبر منصات وسائل التواصل الاجتماعي للتأثير على مجموعة من الأشخاص في المجتمع وقد تكون لها آثار إيجابية او سلبية. لتلك الأسباب أصبح تطوير تقنيات اكتشاف التزوير في الصور وتحديد موقعه مسألة ذات أهمية ك

تم تحديد إنترلوكين 6 (IL-6) باعتباره مؤشرًا لشدة ووفيات فيروس كورونا (COVID-19). على الرغم من أن معدلات الإصابة بالمرض والوفيات تزيد بشكل عام مع تقدم العمر، إلا أنه لا يزال من غير المؤكد ما إذا كان هناك ارتباط بين العمر ومستويات IL-6، مما يؤدي إلى تفاقم شدة كوفيد-19 لدى المرضى. كان الهدف من هذه الدراسة هو فحص العلاقة بين العمر ومستويات IL-6 لدى مرضى كوفيد-19. كانت الدراسة عبارة عن تحليل م

The continuous growth in technology and technological devices has led to the development of machines to help ease various human-related activities. For instance, irrespective of the importance of information on the Steam platform, buyers or players still get little information related to the application. This is not encouraging despite the importance of information in this current globalization era. Therefore, it is necessary to develop an attractive and interactive application that allows users to ask questions and get answers, such as a chatbot, which can be implemented on Discord social media. Artificial Intelligence is a technique that allows machines to think and be able to make their own decisions. This research showed that the dis

تقترح هذه الورقة البحثية نظامًا جديدًا لتصميم تشفير الصور باستخدام الخرائط الفوضوية ذات النقطة الثابتة ومولدات التشفير المتسلسل (PN). يتكون النظام من خرائط فوضوية ثابتة مدمجة برقم إفتراضي (PN) مكون من 32 بت، يتم تنفيذها جميعًا باستخدام مصفوفات البوابات المنطقية القابلة للبرمجة ميدانيًا (FPGA) من خلال بيئة مولد النظام (XSG) . خرائط التشفير المعتادة المستخدمة في هذا العمل هي خرائط (Logistic) و (Lozi) وTent . تحدد متغيرات كل نوع

It is well known that sonography is not the first choice in detecting early breast tumors. Improving the resolution of breast sonographic image is the goal of many workers to make sonography a first choice examination as it is safe and easy procedure as well as cost effective. In this study, infrared light exposure of breast prior to ultrasound examination was implemented to see its effect on resolution of sonographic image. Results showed that significant improvement was obtained in 60% of cases.

The histological structure of integument in Mastacembelus mastacembelus have been investigated from skin fragments cut from nine regions at body surface. The results revealed that the integument of the fish investigated comprises three principal layers- the epidermis, the dermis (corium) and the subcutis-All the three principal layers may further be divided into secondary layers according to the function performed by their cells. The epidermis may further divided into three layers- the outermost epithelial coverage, the middle layer and the basal layer (stratum germinatiuum)-The dermis consists of a relatively thin upper layer of loose vascular connective tissue called the stratum laxum and a thick lower compact layer- the stratum compactu

Porous silicon (P-Si) has been produced in this work by photoelectrochemical (PEC) etching process. The irradiation has been achieved using diode laser of (2 W) power and 810 nm wavelength. The influence of various irradiation times on the properties of P-Si material such as P-Si layer thickness, surface aspect, pore diameter and the thickness of walls between pores as well as porosity and etching rate was investigated by depending on the scanning electron micrograph (SEM) technique and gravimetric measurements.

إن معرفة عدد الأشخاص في المباني والمنشآت يساهم بشكل كبير في المحافظة على سلامة الزائرين وكذلك توفير معلومات مفيدة لإدارة تلك المؤسسات. تهدف هذه الورقة الى استخدام الذكاء الصناعي والاستفادة من كاميرات المراقبة في معرفة عدد الأشخاص المتواجدين في مبنى ما. قام الباحثون ببناء قاعدة بيانات بسيناريوهات مختلفة لتنفيذ تجارب متنوعة لمعرفة افضل ممارسة ممكنة في استخدام هذا النوع من العدادات. ومن خلال تلك التجارب حقق