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Article
Study of the growth and puberty in Iraqi children with nephrotic syndrome

Authors: Najla I. Ayoub --- Huda M. Khalaf --- Sabeeha M. Al-Mefraji
Journal: Mustansiriya Medical Journal مجلة المستنصرية الطبية ISSN: 20701128 22274081 Year: 2012 Volume: 11 Issue: 1 Pages: 85-89
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

Background: Nephrotic syndrome is a chronic disease with frequent relapses and the accumulative dose of steroid play an important role in developing growth retardation.Aims: To detect the degree of growth retardation in long standing nephrotic syndrome and frequent relapsing nephrotic syndrome, and to identify the effect of nephrotic syndrome and steroid therapy on puberty.Patient and methods: A cross sectional study conducted in Child Central Teaching Hospital from the first of January to first of July 2008, on 108 patients with steroid responding nephrotic syndrome, 60 of them were males and 48 were females. All had anthropometric measurement of height and the assessment depend on Tanner growth centile for age and sex, so as the puberty staging according to Tanner staging. The ranges of the patients ages were 2-17y and the mean age was 11.5+4 y. 59.25% (64) were having steroid toxicity; no patient was on cytotoxic drug.Results: The results were shown that 52/ 108 (48.18%) of the patients have got growth retardation (2SD below the mean) Fifty of the patients were at pubertal age, 30 were males and 20 were females. 39 patients had delayed puberty (78%), 36 patients with delayed puberty had steroid toxicity (94.73%). There is a significant relationship between frequency of relapses, duration of illness and steroid toxicity with incidence of delayed puberty and growth retardation.Conclusions: There is a significant correlation between the growth retardation and the development of steroid toxicity. With frequent relapses and long standing nephrosis, there is a chance to develop growth retardation. Delayed puberty is more with steroid toxicity and it is more in males than females.


Article
Study the effect of thermal annealing on some physical properties of thin Cu2SiO3 films prepared by pulsed laser deposition
دراسة تأثير التلدين الحراري على بعض الخصائص الفيزيائية لأغشية Cu2SiO3 الرقيقة المرسبة بالليزر النبضي

Authors: Iqbal S. Naji اقبال سهام ناجي --- Najim A. Khalifa نجم عبد الله خليفة --- Huda M. Khalaf هدى محمد خلف
Journal: Iraqi Journal of Physics المجلة العراقية للفيزياء ISSN: 20704003 Year: 2017 Volume: 15 Issue: 35 Pages: 148-157
Publisher: Baghdad University جامعة بغداد

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Abstract

The Cu2SiO3 composite has been prepared from the binary compounds (Cu2O, and SiO2) with high purity by solid state reaction. The Cu2SiO3 ¬thin films were deposited at room temperature on glass and Si substrates with thickness 400 nm by pulsed laser deposition method. X-ray analysis showed that the powder of Cu2SiO3 has a polycrystalline structure with monoclinic phase and preferred orientation along (111) direction at 2θ around 38.670o which related to CuO phase. While as deposited and annealed Cu2SiO3 films have amorphous structure. The morphological study revealed that the grains have granular and elliptical shape, with average diameter of 163.63 nm. The electrical properties which represent Hall effect were investigated. Hall coefficient is negative which means that the films are n-type, and the electrical conductivity decreases with heat treatment.The sensing properties of the Cu2SiO3 sensors for NO2 gas have been studied, and the result revealed that the Cu2SiO3 films have low sensitivity at room temperature, and it's improve with increasing the operation temperature. The response time increase while the recovery time decrease with increasing operation temperature.

تم تحضير متراكب Cu2SiO3 من المركبات الثنائية (SiO2,Cu2O) وبنقاوة عالية بطريقة تفاعل الحالة الصلبة. إن أغشية Cu2SiO3 رسبت عند درجة حرارة الغرفة على أساسات من الزجاج و Si وبسمك 400 نانومتر بطريقة الترسيب بالليزر النبضي. أوضحت تحليلات الأشعة السينية بان المسحوق يمتلك تركيب متعدد البلورات وبطور أحادي الميل وباتجاه مفضل (111) عند θ2 حوالي 38.670o والتي تعود الى طور اوكسيد النحاس. بينما الأغشية المرسب والملدنة تمتلك تركيب عشوائي. أظهرت دراسة السطح بان الحبيبات تمتلك شكل حبيبي واهليجي، مع معدل قطر 163.63 نانومتر. الخصائص الكهربائية والمتمثلة بتأثير هول تم بحثها وكانت.إشارة معامل هول سالبه وهذا يعني إن الاغشيه من النوع الواهب، وان التوصيلية الكهربائية قلت مع المعاملة الحرارية. تم دراسة الخصائص التحسسية لمتحسس لغاز ثنائي اوكسيد النتروجين وان النتائج أوضحت إن أغشية تمتلك تحسسيه منخفضة عند درجة حرارة الغرفة وتتحسن مع زيادة درجة حرارة التشغيل. زمن الاستجابة يزداد بينما زمن التغطية يقل مع زيادة درجة حرارة التشغيل.

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