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Article
Radiation contrast improvement by suitable choice of x-ray radiation spectrum
تحسين التباين الاشعاعي بالاختيار المناسب لطيف الاشعة السينية

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Abstract

Different bremsstrahlung spectra from tungsten anode x-ray tube generated at 30, 40 and 50 kV have been examined theoretically and experimentally for an attempt to find a most suitable spectrum to radiograph a test object of 0.01 cm thickness of Cu and Ag. The high contrast using this suitable spectrum is demonstrated and the possible effects of fluorescent radiation are discussed.

تم اختيار اطياف اشعة كبح مختلفة منبعثة من انبوب الاشعة السينية باستخدام هدف التنكستن بفرق جهد 30 ,40 و 50 كيلو فولت نظريا وعمليا في محاولة لايجاد طيف مناسب لتصوير الجسم الاختباري المتكون من النحاس والفضة بسمك 0.01 سم شعاعيا.جرى تحقيق التباين الاشعاعي العالي باستخدام هذا الطيف المناسب وكذلك توضيح تاثيرات الاشعة التفلورية.


Article
Histopathological Study Of The Effect Of Low Level Laser And Biatain Ag Non-Adhesive Dressing On The Avulsion Wound Healing In Rabbits

Authors: Ammar Maatoq hashim --- Luay Ahmed Naeem --- Saleh Kadhim Majeed --- Abdulbari A Sahi
Journal: Kufa Journal For Veterinary Medical Sciences مجلة الكوفة للعلوم الطبية البيطرية ISSN: 20779798 Year: 2014 Volume: 5 Issue: 2 Pages: 154-167
Publisher: University of Kufa جامعة الكوفة

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Abstract

The aims of this study was to compare between the effect of Low level Laser and Biatain Ag non-adhesive dressing on healing of avulsion wound in rabbits. Eighteen adult healthy rabbits were used. It is divided in to two equal groups , Laser group , and Biatain Ag group, also each group divide into three equal sub group for histopathological study at 1 week , 2 week and 3 week post operation. The avulsion wound was done on the back(dorsal) after general anesthesia by blade 1 cm . post-operation , in laser group, the rabbits were exposed to low level laser for 5 minute/daily to period 1week, 2week ,3week continuously , but in Biatain Ag group, the avulsion wound was dressing by Biatain Ag non-adhesive dressing and it fixed on wound by blaster and continuous to 1week, 2week, 3week. The histopathological examination appear in first week, both groups showed ulceration but in biotin group showed more ulceration than laser group. In two week, laser group some animals showed absence of ulceration with dermal fibrosis. In two week, in biatain group showed reduce the size ulcer with dermal fibrosis. In three week, laser group showed complete healing with moderate thickening of epidermis and hyperkeratosis with dermal fibrosis. While biatain group showed complete healing with marked dermal fibrosis but presence of foci of hair folliculitis. Conclusion In two week, laser group all showed healing of ulcer except one animal while biatain group there was only reduce size of ulcer but not complete healing.

Keywords

Laser --- Biatain --- wound --- Radiation


Article
Radiation protection evaluation from radio diagnostic departments in Erbil hospitals
تقييم الحماية من الإشعاع من أقسام التشخيص الشعاعي في مستشفيات أربيل

Authors: Sameeah Abdulrahman Rashid --- Runak Taher Ali --- Saeed Nadhim Younis
Journal: Zanco Journal of Medical Sciences مجلة زانكو للعلوم الطبية ISSN: 19955588/19955596 Year: 2014 Volume: 18 Issue: 1 Pages: 625-631
Publisher: Hawler Medical Univeristy جامعة هولير الطبية

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Abstract

Background and objective: Radiation is used in some aspects of medicine, researches and in industries. These radiation applications are useful to society. However radiation can also have detrimental effects. It was important to establish rules and resolutions governing these uses to balance the positive against the negative effects. Dose limits have been established for groups who use radiation in their work as well as for population at large. The rules used in most countries have been worked out by the International Commission on Radiological Protection (ICRP). The aim of this study was to evaluate the radiation protective measures in different diagnostic radiological departments in Erbil hospitals.Methods: Data on the number of diagnostic procedures using x-ray examinations in five hospitals were collected. The palm RAD 907 Nuclear Radiation Meter and Contamination Monitor CoMo 170 were used to measure radiation leakage. Questionnaire was also used to elicit information from the most senior personnel of the hospital.Results: The finding showed that the facilities for safety were grossly inadequate and the dose rates of 16.4μSv/hr and 20μSv/hr were recorded at places for paramedics and technician room respectively. Dose rate in front of window of the monitor room was 113μSv/hr and in the reception was 20μSv/hr indicating higher health risk to the paramedic, visitors and personnel at the hospital.Conclusion: Radiation protection facilities in the radiological departments of Erbil hospitals are in general poor including both public & private sectors indicating high health risk to the paramedics, visitors and personnel at the hospitals.


Article
Thermal Performance of a Domestic Solar Water Heater
الأداء الحراري لسخان ماء شمسي محلي الصنع

Author: Hala K. Saleh هالة قيدار محمد صالح
Journal: Rafidain journal of science مجلة علوم الرافدين ISSN: 16089391 Year: 2012 Volume: 23 Issue: 1E Pages: 137-143
Publisher: Mosul University جامعة الموصل

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Abstract

An integrated solar water heater was designed and built using local materials and labor. The system consists of 1 m x 1 m x 0.03 m rectangular tank. The total cost of the system is 125000 ID. The working principle of the unit is fairly simple. An absorbent surface absorbs solar radiation to heat water.The performance of the system was tested for four days in April during different atmospheric conditions. In three days, the water temperature reached 60 °C and higher in partly cloudy, sunny/showers, and sunny/clear sky conditions. However, on a dusty/cloudy day solar radiation was severely reduced keeping the highest water temperature slightly below 30 °C.The chronic shortage of power supply in Mosul, the abundant sunshine hours in winter and the reasonable cost of the system all serve as good reasons to acquire and install a solar water heater to meet household needs for hot water.

تم تصميم وبناء سخان ماء شمسي متكامل باستخدام مواد وعمل محلي. ذي أبعاد 1م x 1م x 0,03 م والكلفة الكلية للمنظومة كانت 125,000 دينار عراقي. مبدأ عمل هذه المنظومة بسيط جدا. هنالك سطح امتصاص يقوم بامتصاص إشعاع الشمس لتسخين الماء.لقد اختبر أداء هذه المنظومة في ظروف جوية متباينة لأربعة أيام من شهر نيسان 2009. ففي ثلاثة أيام وصلت درجة حرارة الماء الى 60 °سليزية وأعلى في ظروف جوية هي: غائم جزئي، مشمس/ممطر، وصحو في سماء صافية. لكن في يوم غائم مغبر شدة إشعاع الشمس انخفضت وكانت أعلى درجة حرارة للماء اقل قليلا من 30 °سليزية.إن النقص المزمن في تجهيز الطاقة الكهربائية في الموصل، ووفرة الأيام المشمسة في الشتاء وكذلك الكلفة غير العالية لهذه المنظومة كلها أسباب جيدة تستدعي عمل ونصب سخان ماء شمسي لسد الاحتياجات المنزلية للماء الحار.


Article
Determination of Radon Concentrations in AL-NAJAF Governorate by Using Nuclear Track Detector CR-39

Authors: Nada F. Tawfiq --- Hussein M. Nasir --- Rafaat Khalid
Journal: Al-Nahrain Journal of Science مجلة النهرين للعلوم ISSN: (print)26635453,(online)26635461 Year: 2012 Volume: 15 Issue: 1 Pages: 83-87
Publisher: Al-Nahrain University جامعة النهرين

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Abstract

Appeared different cases of cancer in certain districts in Al-Najaf governorate and it had assumed several hypotheses. Including the existence of radon in the air inside homes, where the radon gas is the largest and the most important variables contributing to the exposure to natural radiation in the world. Radon cup technique was used, which is a cylindrical chamber 5 cm in diameter and height of 7 cm inside the detector impact in solid state nuclear track detector CR-39 and these detectors was etched with 6.25 N from sodium hydroxide at a temperature of 70o C in a time of 12 hours. Values of radon concentrations ranged between 74.2804 ± 42.6048 Bq/m3 to 478.1301 ± 53.325 Bq/m3, also found that the rate of radon concentration in Al-Najaf governorate, up to 183.682 Bq/m3 with standard deviation of up to 104.231 Bq/m3. High cancer rates in some neighborhoods in Al-Najaf governorate can be attributed to high concentrations of radon gas in these areas.

قد ظهرت حالات مختلفة من الإصابة بالسرطان في بعض المناطق من محافظة النجف وقد تعهدت بها العديد من الفرضيات. بما في ذلك وجود غاز الرادون في الهواء الموجود داخل المنازل, حيث يعتبر عاز الرادون من أوسع واهم المتغيرات المساهمة في التعرض للإشعاع الطبيعي في العالم. كما استخدمت تقنية كوب الرادون وهو عبارة عن حجرة اسطوانية بقطر 5سم وارتفاع 7سم بداخلها كاشف الأثر النووي من المادة الصلدة CR-39 , وتم قشط مادة الكاشف بمادة هيدروكسيد الصوديوم وبعياريه 6.25 N وبدرجة حرارة 70o C وبزمن 12 ساعة. تراوحت قيم تركيز الرادون مابين 74.2804±42.6048 Bq/m3 الى Bq/m3 478.1301±53.325, حيث وجد إن معدل تركيز الرادون في محافظة النجف بحدود 183.682 Bq/m3 وبانحراف معياري 104.231 Bq/m3. كما إن ارتفاع معدلات الإصابة بالسرطان في بعض الأحياء من محافظة النجف يمكن أن يعزى إلى ارتفاع تبركيز غاز الرادون في هذه المناطق.

Keywords

Radon --- Cancer --- SSNTD --- Radiation Exposure


Article
New approach in Bisecting angle technique

Author: Dr. Mona Abdul Hadi Al-Safi B.D.S. , M.Sc.* د. منى عبد الهادي
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2006 Volume: 3 Issue: 1 Pages: 92-96
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

Since the conventional radiograph was introduced in 1901, it seems that it has wide spectrum in it use in medical, dentistry & engineering branches.The importance came from its value in diagnosis and predicate the causes of different effects. This lead to more researches for more advanced programs , which continued through last century lead to an advanced radiography like digital one, C.T. scan and M.R.I. Still the conventional radiographs are the baseline for this progress a far farther for future progression.Aim of the study is to prove a new approach in "Bisecting angle technique".The present study indicate the new approach in using the bisecting angle technique since the old one give instructions on three main lines:-A. Patients positioning in the dental chair.B. Positioning of dental intraoral film inside patient mouth.C. The position of the cone of X-ray machine in both vertical and horizontal angles.But Al-Safi method gives instructions number D- about the anatomical landmarks that lead to the apex of the tooth to which central beam is directed, by drawing a line from ala of the nose to the tragus of the ear called ala tragus line indicate the apecies of maxillary teeth , for the mandibular arch a line draw indicate apices of mandibular teeth from the angle of the chin to the angle of the mandible in proper manner.In present study, two groups of fifth years students in the college of Dentistry in Baghdad had been taken. The first group had given instructions A-B-C-, second group had given instructions A-B-C- and D- according to Al-Safi method.The statically analysis using t-test shows , a significant difference between the first and second group in the effectiveness of sharpness and allignments artifacts , from the same point of view there were no significant difference between members of second group while there is a significant difference between members of the first group.The results indicate that the new approach in instructing the second group of students were gave wide predictors for their work and better results in decreasing the technical errors and dental artifacts.


Article
CHOOSING OF SOME BLOOD PARAMETERS AND HEPATIC ENZYMES AS INDICATORS FOR RADIATION EXPOSURE IN EXPERIMENTAL RABBITS
اختيار بعض مقاييس الدموية والانزيمات الكبدية كموشر للتعرض للاشعاع في الارانب المختبرية

Author: Hanaa Salman Kadhim هناء سلمان كاظم
Journal: Basrah Journal of Veterinary Research. مجلة البصرة للابحاث البيطرية ISSN: 18138497 Year: 2006 Volume: 5 Issue: 1 Pages: 37-43
Publisher: Basrah University جامعة البصرة

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Abstract

Injection of l mg / kg of uranyle acetate caused an obvious changes in the numbers of white bloodcells with progressing time ofexperiment, specially in the numbers of neutropiiiles and monocytes whichdecreased significantly, while the numbers of eosinophiles has increased significantly after the first weekof injection and then decreased significantly in the 2nd and 3rd week of exposure as compared withcontrol group. Also, the injection caused significant decreasing in Hb and PCV values, while theactivities of hepatic enzymes GPT, and GOT were not affected in comparison with control group.. So, it may be useful to use this variation of WBC percentage as a primary indication to persons who Dexposed to different doses of radioactive compound


Article
Effect of the Scattered Solar Radiation on the Atmospheric Ozone Measurements

Author: W.M. Yokoshvilly
Journal: Iraqi Journal of Applied Physics المجلة العراقية للفيزياء التطبيقية ISSN: 18132065 23091673 Year: 2006 Volume: 2 Issue: 1-2 Pages: 11-15
Publisher: iraqi society for alternative and renewable energy sources and techniques الجمعية العراقية لمصادر وتقنيات الطاقة البديلة والمستجدة

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Abstract

The spectrometer-ozonometer was used for measurement of radiation atnine wavelengths in the ultraviolet range to register the passed solarradiation. The applicability limits of the Lambert’s law for the calculationof atmospheric ozone content by the multi-wavelength method were studied.It was found that the deviations from this law which allow to use thestandard method only under solar zenith angles below 80° were due to thelight scattering processes. A model proposed in this work made it possible totake into account the light scattering processes, which become importantunder oblique beam propagation. The model was compared with thecalculations on the basis of the multi-wave method. The reflectioncoefficients for several wavelengths were calculated using the four-fluxmodel.


Article
Cytomorphological changes in the sputum after Radiation Therapy for patients with Bronchogenic Carcinoma

Author: Mazin J. Al-baldawy , M.Sc. pathology د. مازن جودي البلداوي
Journal: Journal of the Faculty of Medicine مجلة كلية الطب ISSN: 00419419 Year: 2007 Volume: 49 Issue: 2 Pages: 253-256
Publisher: Baghdad University جامعة بغداد

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Abstract

Summary:Background : Bronchogenic carcinoma is a common malignancy in iraq and radiotherapy is one of treatment methods for this disease . This study is cytopathological study dealing with sputum samples for bronchogenic carcinoma before and after radiotherapy .Objectives : To find morphological changes of the malignant cells as seen in cytopathological examination of the sputum after radiotherapy to the chest . Patients and Methods : Twenty five patients with a recent diagnosis of bronchogenic carcinoma presented to the Institute of Radiotherapy and Nuclear Medicine for the treatment in the period between 20th july 2004 and 25th june 2005 , sputum samples were obtained from these patients before and after they received radiation therapy to the chest (850 rad from cobalt 60 machine) .The malignant cells were studied by light microscope , cytological features of the malignant cells are compared before and after irradiation . Chi square test and P value were used as statistical methods for comparison of the changes in the malignant cells .Results : Squamous cell carcinoma was the most common type in this study. Cytoplasmic vacuolations in the malignant cells after radiation were not significant ( p value>0.05),nuclear changes following irradiation were significant (p value<0.05) .Conclusion : malignant cells are affected by radiation with cytoplasmic and nuclear changes .Key Words : Cytomorphological changes ,Bronchogenic carcinoma , radiation __________________________________________________________________________________________


Article
Assessment of Genetic Effects of Bacterial Cells After Exposure to Mobile Phone Radiation Using RAPD Technique
تقييم التأثيرات الوراثية للخلايا البكتيرية بعد التعرض لأشعة الهاتف النقال باستخدام تقنية RAPD

Author: Ibraheem A. Latif, Adnan F. AL-Azawy, Akeel H. AL-Assie
Journal: Iraqi Journal of Biotechnology المجلة العراقية للتقانات الحياتية ISSN: 18154794 Year: 2013 Volume: 12 Issue: 2 Pages: 63-74
Publisher: Baghdad University جامعة بغداد

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Abstract

Abstract: In this study the random amplified polymorphic DNA (RAPD) technique was used to evaluate the genetic effects of the DNA of Escherichia coli and Staphylococcus aureus bacteria after exposed to various durations (15, 30, and 45 min) of radiofrequency (RF) radiation used in cellular phone communications at a frequency of 900 MHz compared with control (unexposed). Genomic DNA were obtained from all bacterial cells, then amplified individually by RAPD technique with fourteen different 10-mer arbitrary primers. Change in the genome revealed by RAPD technique included variation in band intensity; loss of normal bands and appearance of new bands compared with control. The results display that exposition to various durations of mobile phone radiation induced great changes in RAPD profiles of genomic DNA of bacterial cells compared with control and genomic DNA of E. coli bacteria was more affected than S. aureus. In addition, the results demonstrated that RAPD technique is useful for detection of alterations in the DNA produced by mobile phone radiation.

الخلاصــة:في هذه الدراسة استخدمت تقنيـــة التضاعف العشوائي المتعدد الأشكال لسلســــة الدنا (RAPD) لتقييم التأثيرات الوراثيــــة للحامض النـــووي DNA) )لبكتريا الإشيريشيا القولونية والبكتيريا العنقودية الذهبية بعد التعرض لفترات مختلفة (15، 30، 45 دقيــقة) من الموجات الراديوية المستخدمة في اتصالات الهاتف النقال عند التردد 900 ميغاهيرتز مقارنة مع السيطرة (غير المعرضة). تم الحصول على الجينوم من جميع الخلايا البكتيرية، ضخم باستعمال تقنية RAPD مع واحد وعشرين بادءة عشرية القواعد اعتباطية التعاقب. تضمنت التغيرات في الجنيوم والتي أظهرتها تقنية RAPD التغير في كثافة الحزمة أو فقدان حزم طبيعية وظهور حزم جديدة مقارنة مع السيطرة. اظهرت النتائج ان التعرض لفترات مختلفة لأشعة الهاتف المحمول سبب تغيرات كبيرة في انماط ال RAPD للخلايا البكتيرية مقارنة مع السيطرة وان جينوم بكتيريا الإشيريشيا القولونية كان أكثر تأثرا من البكتيريا العنقودية الذهبية. بالإضافة إلى أن النتائج أثبتت أن تقنية RAPD مفيدة للكشف عن التغيرات في الحامض النووي الديوكسي رايبوزي الناتجة عن إشعاع الهاتف النقال.

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