Volume 18 No. 1

استخدام اسلوب المحاكاة في تقدير معلمتي المقياس والشكل لتوزيع قاما

2018-02-04T10:34:26Z

استخدام اسلوب المحاكاة في تقدير معلمتي المقياس والشكل لتوزيع قاما أحمد, مدني محمد مدني; حمدي, أحمد محمد عبد الله; عبد اللطيف, عفراء هاشم هدفت هذه الدراسة الى تقدير معلمة المقياس (α) ومعلمة الشكل (β) لتوزيع قاما باستخدام اسلوب المحاكاة في توليد بيانات العينة باحجام مختلفة (صغيرة n=25، متوسطة n = 50 وكبيرة n = 100 ) والمقارنة بين طرق التقدير التقليدية (طريقة العزوم ، طريقة الامكان الاعظم وطريقة التباين الأقل) بواسطة مقياس متوسط مربع الأخطاء MSE للحصول علي افضل تقدير. خلصت الدراسة الى ان طريقة التباين الاقل اعطت اقل متوسط مربع اخطاء في جميع العينات وعليه تعتبر هذه الطريقة افضل من سابقتيها في تقدير معلمتي توزيع قاما، وقد اوصت الدراسة باستخدامها كما اوصت الدراسة باجراء مقارنات بين طرق التقدير التقليدية (التباين الاقل، العزوم، الامكان الأعظم .... الخ) مع طرائق بييز المختلفة في تقدير معلمتي توزيع كاما مقال

Extracorporeal Septoplasty in Correction of Deviated Nose via Closed Septorhinoplasty Approach

2018-02-01T09:44:48Z

Extracorporeal Septoplasty in Correction of Deviated Nose via Closed Septorhinoplasty Approach Ibrahim, Salim Hussain Extracorporeal septoplasty (ECS) is a surgical approach for correction of severe septal deviation. This is a retrospective case study to find the percentage, nasal septal pathology, and outcomes of ECS among patients with deviated nose treated by primary closed septorhinoplasty at Salah-Elden governorate in Iraq during six years period. The percentage of indication for ECS in correction of a deviated nose was (22.6 %, 26 out of 115 patients). The nasal septal pathology was mainly in the anterior part, in cottle's area I, pathology was found in all (26 patients,100%) and in cottle's areas II and III was (92.3%). The neoseptum with the spreader grafts was fixed dorsally by two transcutaneous sutures and caudal septum fixed into groove between medial crura and to the anterior nasal spine. Patient and surgeon satisfaction regarding the cosmetic outcomes were very good in (22 patients, 80.8%), while excellent functional outcomes happened in (25 patient, 96.2%) who get relief of nasal obstruction. Article

Effects of Lycopene on Paraoxonase and Adipokines Parameters in Streptozotocin - Induced Diabetic Rabbits

2018-01-02T08:43:27Z

Effects of Lycopene on Paraoxonase and Adipokines Parameters in Streptozotocin - Induced Diabetic Rabbits Sarhat, Entedhar R.; Saeed, Husamuldeen Salim Mohammed Background: Diabetes mellitus (DM) is a metabolic disease characterized by hyperglycaemia resulting from defects in insulin secretion, insulin action, or both, and occurs in almost all populations of the world a variable prevalence. Objectives: The current study assessed the impact of lycopene on adipokines and paraoxonase (PON) in stereptozotocin-induced diabetic rabbits. Materials and Methods: A total of one hundred of rabbits (Albino Rabbits) of both sexes weighing between 1.5-2.1 kg were completely randomized in four groups (G) comprising 25 rabbits each. Diabetes was induced by a single intraperitoneal injection of streptozotocin (35 mg/kg body weight) feeding on a high fat regimen. Rabbits in G 3,4 which were administered 10 and 20 mg/kg respectively of lycopene for 4 weeks. The serum levels of leptin, adiponectin, ghrelin, resistin, and tumour necrosis factor – α (TNF-α) were measured by enzyme-linked immunosorbent assay (ELISA), while serum PON was measured by spectrophotometric method. SPSS computer software was used for data analysis. Results:Results showed that lycopene administration at both doses significantly reduced the leptin, resistin, TNF-α, and glucose levels compared to diabetic control groupG2. Consistent significant increases (p < 0.05) were noticed in the level of paraoxonase, adiponectin, and ghrelin in diabetic rabbits dealt with lycopene in comparison with diabetic rabbits of control group G2. Conclusions: The high leptin, resistin, and TNF-α levels and oxidative damage whereas low linked with diabetes, were improved with the administration of lycopene. Article

Solar Photocatalytic Decolorization of Four Commercial Dyes in Aqueous Solution of Two Forms of Titanium Dioxide TiO2

2017-12-31T12:57:47Z

Solar Photocatalytic Decolorization of Four Commercial Dyes in Aqueous Solution of Two Forms of Titanium Dioxide TiO2 A, Yasmin A.; A, Adil; A, Elmugdad A. The photocatalytic decolorization of four commercial dyes with different structures and different substitute groups has been investigated using pure TiO2 and TiO2 sol-gel as photocatalysts in aqueous solution under solar radiation. Influence of different kinds of dye and photocatalyst on photo-catalytic process was studied. Solution temperature and daily photon flux during experiment was calculated. The result decolorization percentage of four dyes was in the following order: reactive yellow > methylene blue > tubantin blue > tubantin red; this is due to molecular structural difference among these four molecules of dyes. High decolorization when used TiO2 sol-gel due to small particle size, small surface area and wide energy gab. The daily photon flux average was nearly constant during the experiments, owing to its large surface area pure TiO2 caused higher average solution temperature than caused by TiO2 sol-gel when they are used as potocatalytic decolorizers. Article