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Article
Vitamin E Level In Friedreich’s Ataxic Phenotype Patients In Four Major Hospitals In Baghdad

Author: Ahmed Hasan Ahmed*, Ahmed Tahseen Muslim**, Basim Hanoon Jabbar** , Zaki Noah Hasan***.
Journal: Al-Kindy College Medical Journal مجلة كلية الطب الكندي ISSN: 18109543 Year: 2017 Volume: 13 Issue: 1 Pages: 132-136
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: Friedreich ataxia (FRDA) is the most common form of inherited ataxia, comprising one-half of all hereditary ataxias with a carrier rate between 1 in 60 to 1 in 90 and with a disease prevalence of 1 per 29,000. It can occur in two forms the classic form or in association with a vitamin E dependent ataxia. The precise role of Vitamin E in the nervous system is unknown; An Oxidative attack is suspected to play a role in Ataxia with Vitamin E deficiency, as well as in Friedreich ataxia. Vitamin E is the major free-radical-trapping antioxidant.Objective: The objectives of the study is to asses vitamin E level in patients with Friedreichs ataxia phenotype in Iraqi patients. Type of the study:Cross-sectional study.Method: This study was conducted at the neuroscience hospital and Baghdad teaching hospital during the period from the 1st of November 2013 through November 2014. Forty patients with friedreich's ataxia attended in neuroscience hospital and Baghdad teaching hospital during this period; there was12 male, 20 female patients and their age range between (4-50) years. Results: Regarding the level of vitamin E in patients in the present study, The study revealed that mean level of vitamin E for Friedreich ataxia patients was (10.92 μg/ml) ranging from (8-18 μg/ml),while in the control group the mean was (28.06μg/ml) ranging from (22-36μg/ml), the difference in mean level was found to be statistically significant (p=0.0001.) Thirty percents of (FRDA) patients was (8-9.9μg/ml), while half of patients (50%) were within (10-11.9 μg/ml),and low percentage (15 %)of patients were within (12-13.9 μg/ml ). The rest (5%) were had vitamin E level equal or more than 14 μg/ml. these finding revealed that majority of Friedreich ataxia patients were found with low level of vitamin E (32 patients(80%)), and low percentage with normal level (8 patients(20%.)) Patients with Friedreich ataxia were found to have a comparable level 10.47±1.79(8.4-13.5),11.48±2.61(9.4-18) and 10.66±1.26(9-12.5) for those with less than 10 years, 10-19 years , equal or more than 20 years of age respectively (p=0.382), while it was found to have a significantly decreasing level with advance in the age for the control group, 30.57±4.61(24.5-36), 27.46±3.16(23.7-33.5), 25.50±3.03 (22.9-29) for those less than 10 years, 10-19 years, 20 years or more respectively (p=0.006.) Vitamin E level in relation to Gender showed that Friedriech ataxia male patients had significantly higher vitamin E level compared to females [12.05±2.66 (9.0-18.0) compared to 10.17±1.07 (8.4-12.0)] (p=0.003), while relation to gender in the control group was not of significant value statistically [27.08±2.90 (22.9-30.0) for male compared to 29.04±4.97 (23.7-36) for females] , p=0.136. Conclusion: In the light of the results of the present study, the following conclusions were made: The level of vitamin E in friedreichs ataxic phenotype patients was subnormal than normal range representing 80% of the sample selected for the test. The level of vitamin E in male patients of freidriechs ataxic phenotype patients was higher than female patients.


Article
Controlling the Photo-Degradation Rate Constant of PS Containing Nickel(II) Complex

Authors: Zainab Hussain --- Raghda Alsayed --- Atheel Alwash --- Ahmed Ahmed --- et al.
Journal: Al-Nahrain Journal of Science مجلة النهرين للعلوم ISSN: (print)26635453,(online)26635461 Year: 2019 Volume: 22 Issue: 3 Pages: 8-17
Publisher: Al-Nahrain University جامعة النهرين

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Abstract

The complex of Ni(II) metal with 4-amino-5-(pyridyl)-4H-1,2,4-triazole-3-thiol was used as a polystyrene (PS) films photostabilizer. The PS films comprising concentrating of complex 0.5% ww were outputted by casting method from chloroform solvent. The photostabilization activities of PS films compounds with dissimilar thickness were identified by computing the photodegradation rate constant (kd) for blank and modified polystyrene. From the practical consequences obtained, a mechanism was proposed count on the installation of the complex. The PS films were irradiated utilizing a 365 nm wavelength light source with intensity 6.02 10-9 Ein dm-3 s-1 at room temperature.

Keywords

Ni --- II complex --- PS --- Photochemistry --- photodegradation.


Article
Albezi method in regression to estimate the tree synthesis model classified and compared to the model Logistics with the application
الأسلوب البيزي في مصنف الانحدار الشجري لتقدير نموذج تجميعي ومقارنته بالنموذج اللوجستي مع التطبيق

Authors: O.m.d. Omar Abdul Mohsin Ali أ.م.د. عمر عبد المحسن علي --- MM Suhad Ahmed Ahmed م.م. سهاد أحمد أحمد
Journal: Journal of Administration and Economics مجلة الادارة والاقتصاد ISSN: 18136729 Year: 2016 Issue: 109 Pages: 335-348
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

The use of Bayesian approach has the promise of features indicative of regression analysis model classification tree to take advantage of the above information by, and ensemble trees for explanatory variables are all together and at every stage on the other. In addition to obtaining the subsequent information at each node in the construction of these classification tree. Although bayesian estimates is generally accurate, but it seems that the logistic model is still a good competitor in the field of binary responses through its flexibility and mathematical representation. So is the use of three research methods data processing is carried out, namely: logistic model, and model classification regression tree, and bayesian regression tree model. Having been in this research compare these methods form a model for additive function to some nonparametric function. It was a trade-off between these process models based on the classification accuracy by misclassification error, and estimation accuracy by the root of the mean squares error: RMSE. It was the application on patients with diabetes data for those aged 15 years and below are taken from the sample size (200) was withdrawn from the Children Hospital in Al-Eskan / Baghdad.

تم استعمال الاسلوب البيزي وما يتضمنه من ميزات استدلالية لتحليل أنموذج تصنيف الانحدار الشجري للأستفادة من المعلومات السابقة من جانب، ولتجميع الأشجار للمتغيرات التوضيحية كلها معاً وعند كل مرحلة تفرّع من جانب آخر. فضلاً عن استحصال المعلومات اللاحقة عند كل عقدة تفرّع في بناء هذه الشجرة التصنيفية. وعلى الرغم من دقّة التقديرات البيزية عموماً، لكن يبدو أن النموذج اللوجستي لازال منافساً جيداً في مجال وصف الاستجابات الثنائية من خلال مرونته وتمثيله الرياضي . ولذا تم استعمال ثلاث طرائق تتم فيها معالجة بيانات البحث، وهي: النموذج اللوجستي، ونموذج مصنف الانحدار الشجري، ونموذج مصنف الانحدار الشجري البيزي. وقد تم في هذا البحث مقارنة هذه الطرائق بصيغة نموذج تجميعي لدالة لامعلمية. وتم اجراء عملية المفاضلة بين هذه النماذج بالأستناد الى معيار دقّة التصنيف المتمثل بخطأ التصنيف، ومعيار دقّة التقدير المتمثل بجذر متوسط مربعات الخطأ. وتم التطبيق على بيانات مرضى السكري لمن يبلغون من العمر (15) سنة فأقل مأخوذة من عينة بحجم (200) تم سحبها من مستشفى الطفل في الاسكان / بغداد .الكلمات الرئيسية: التصنيف الشجري، الأسلوب البيزي، النموذج اللوجستي، الطرائق اللامعلمية

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