Steps were taken to obtain the Kojic acid crystals from local fungal isolation A. flavus WJF81 by separating the fermentation products from the fungus mycelium from the production plant at the centrifuge at a speed of 5000 cycles for 10 minutes. The extraction was followed by ethyl acetate then supernatant concentrate by using rotary evaporator, and dried with heat oven 37ºC. Long, yellowish, pristine acid crystals were obtained that examined the optical microscope with a magnification force of 10x and 40x. The melting point of kojic acid was determined between 152.9-153.5 °C Results of the diagnosis of Kojic acid by applying High pressure liquid chromatography HPLC technique showed that the acid was at one peak, which was close to the time of detention with the peak retention time of the standard acid, which Kojic acid under study retention time was (7.054) minutes and retention time of the standard kojic acid (7.534) minutes. Results of the study of the cytotoxicity of Kojic acid on the human blood consumer solution by using concentrations (100, 300, 200, 400, 500 ppm) of acid showed absence of deposits and no appearance for any analysis of blood corpuscles of the tested concentrations.
The largest use of x-ray in medical by dentists, employers or persons that needed by patients with specific conditions, lead to higher exposure of x-ray that may cause many diseases. In the present work radiography films have been used in evaluating the efficiency of using unsaturated polyester polymer reinforced with lead oxide (PbO) as shield material for medical x-ray devices, many parameters studied like concentration and thickness that they are increasing the attenuation of x-ray in them. The results show that the attenuation of X-ray increasing with concentration of reinforced material and with thickness, and the optical density decreases with increasing concentration from 0% to 50%, we chose 30% as suitable concentration to increase
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In this study, NAC-capped CdTe/CdS/ZnS core/double shell QDs were synthesized in an aqueous medium to investigate their utility in distinguishing normal DNA from mutated DNA extracted from biological samples. Following the interaction between the synthesized QDs with DNA extracted from leukemia cases (represents damaged DNA) and that of healthy donors (represents undamaged DNA), differential fluorescent emission maxima and intensities were observed. It was found that damaged DNA from leukemic cells DNA-QDs conjugates at 585 nm while intact DNA (from healthy subjects) DNA–QDs conjugates at 574 nm. The obtained results from the optical analyses indicate that the prepared QDs could be utilized as probe for detecting disrupted DNA th
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Shaky Baghdad heavy crude oil 22 API is processed by distillation and solvent extraction. The purpose of distillation is to separate the light distillates (light fractions) which represent 35% of heavy crude oil, and to obtain the reduced crude oil. The heavy residue (9 API) is extracted with Iraqi light naphtha to get the deasphaltened oil (DAO), the extraction carried out with temperature range of 20-75 oC, solvent to oil ratio 5-15:1(ml:g) and a mixing time of 15 minutes. In general, results show that API of DAO increased twice the API of reduced crude oil while sulfur and metals content decreased 20% and 50% respectively. Deasphaltened oil produced from various operating conditions blended with the
... Show MoreObjectives: This study aims to assess and compare the micro-shear bond strength (μSBS) of a novel resin-modified glass-ionomer luting cement functionalized with a methacrylate co-monomer containing a phosphoric acid group, 30 wt% 2-(methacryloxy) ethyl phosphate (2-MEP), with different substrates (dentin, enamel, zirconia, and base metal alloy). This assessment is conducted in comparison with conventional resin-modified glass ionomer cement and self-adhesive resin cement. Materials and methods: In this in vitro study, ninety-six specimens were prepared and categorized into four groups: enamel (A), dentin (B), zirconia (C), and base metal alloys (D). Enamel (E) and dentin (D) specimens were obtained from 30 human maxillary first premolars e
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KE Sharquie, AA Al-Nuaimy, WJ Kadhum, Saudi medical journal, 2006 - Cited by 3
أن التركيب الهيكلي للجسم وقياساته الجسمية لها دورا ً كبيرا ً ومهما ً في الأداء الرياضي وتعتبر أحد أسس النجاح أو الفشل للفعالية التي يزاولها الرياضي ، كون توافر القياسات الجسمية الملائمة لمزاولة فعالية معينة تمنح الرياضي فرصة أكبر لإستيعاب الأداء الحركي السليم للمهارات ، ولكون فعالية الوثب العالي تعد واحدة من فعاليات ألعاب الساحة والميدان التي شملها التطور المتسارع في إنجازها لذا أرتأى الباحثون أن يتم أختي
... Show Moreهدفت الدراسة لالقاء الضوء على وضع المرأة في التعليم العالي في العراق خلال الاعوام الدراسية: 2008 - 2009, 2010 – 2011 و2011- 2012. تتيح القوانين والتعليمات في التعليم العالي في العراق فرص متكافئة للاناث والذكور للتسجيل في الدراسات الاولية والعليا، وكذلك عدم التمييز في الرواتب الشهرية للمنتسبين وفقا لنوع الجنس (الجندر ). بلغ متوسط عدد الاناث في مرحلة الدراسة الاولية في مؤسسات التعليم العالي في العراق لثلا
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