research centers


Search results: Found 3

Listing 1 - 3 of 3
Sort by

Article
Biodegradation and bioaccumulation rate of PCBs in cows
معدل تحلل وتراكم المبيدات (PCBs) في البقر

Author: Alaa Kareem Mohammed
Journal: Journal of Engineering and Sustainable Development مجلة الهندسة والتنمية المستدامة ISSN: 25200917 Year: 2012 Volume: 16 Issue: 3 Pages: 411-420
Publisher: Al-Mustansyriah University الجامعة المستنصرية

Loading...
Loading...
Abstract

The object of this research is to focus on bioaccumulation and biodegradation rate of hydrophobic, persistent pollutants namely PCBs in cows. A simple mathematical mass balance equation which represents the input and output streams of these persistent pollutants to a cow was developed. Samples were taken from rural agricultural farms in Abu-Greab in Baghdad. These samples were analyzed for input and output terms which represent vegetation, soil, concentrate, milk and feces to measure the concentration of PCBs in these samples. It was found that bioaccumulation and biodegradation rate of PCBs in cows is a bout 202.6 µg/d. and most of PCBs input the cow is by vegetation rather than concentrate or soil while PCBs input to the cow by air or water are very low values and can be neglected so as the PCBs out put the cow by urine and air. Also it was found that the output PCBs from the cow is about 62.5% by milk and 37.5% by feces.

يهدف هذا البحث الى دراسة معدل تحلل وتراكم المواد العضوية صعبة التحلل نوع ( PCBs ) التي تدخل اجسام البقر في المزارع الريفية القريبة من مناطق التلوث بهذا النوع من المواد . وضعت معادلة موازنة المادة والتي تم فيها حساب معدل دخول وخروج هذه الملوثات في اجسام البقر. اخذت نماذج عديدة من منطقة ريفية زراعية في منطقة ابي غريب في بغداد. تم تحليل النماذج التي اخذت من العلف والتربة والتقاوي والحليب وبراز البقر. لقد وجد ان معدل تحلل وتراكم المواد نوع (PCBs ) تبلغ 202.6 مايكروغرام / اليوم. وان هذه المواد تدخل البقر عن طريق الطعام (العلف) اكثر منه عن طريق التقاوي و التربة . ان تركيز الملوثات الداخلة الى البقر عن طرق الماء والهواء يكون قليل جدا ويمكن اهماله وكذلك تركيز الملوثات في البول قليل ويمكن اهماله. كذلك وجد ان 62.5% من هذه الملوثات تخرج جسم البقرة عن طريق الحليب بينما 37.5 % يخرج عن طريق البراز.


Article
Biodegradation and bioaccumulation rate of PCBs in cows

Author: Alaa Kareem Mohammed علاء كريم محمد
Journal: Journal of Engineering and Sustainable Development مجلة الهندسة والتنمية المستدامة ISSN: 25200917 Year: 2013 Volume: 17 Issue: 2 Pages: 132-142
Publisher: Al-Mustansyriah University الجامعة المستنصرية

Loading...
Loading...
Abstract

The object of this research is to focus on bioaccumulation and biodegradation rate of hydrophobic, persistent pollutants namely PCBs in cows. A simple mathematical mass balance equation which represents the input and output streams of these persistent pollutants to a cow was developed. Samples were taken from rural agricultural farms in Abu-Greab in Baghdad. These samples were analyzed for input and output terms which represent vegetation, soil, concentrate, milk and feces to measure the concentration of PCBs in these samples. It was found that bioaccumulation and biodegradation rate of PCBs in cows is a bout 202.6 µg/d. and most of PCBs input the cow is by vegetation rather than concentrate or soil while PCBs input to the cow by air or water are very low values and can be neglected so as the PCBs out put the cow by urine and air. Also it was found that the output PCBs from the cow is about 62.5% by milk and 37.5% by feces

يهدف هذا البحث الى دراسة معدل تحلل وتراكم المبيدات نوع ( PCBs ) التي تدخل اجسام البقر في المزارع الريفية التي تستخدم هذا النوع من المبيدات . وضعت معادلة موازنة المادة والتي تم فيها حساب معدل دخول وخروج هذه الملوثات في اجسام البقر. اخذت نماذج عديدة من منطقة ريفية زراعية في منطقة ابي غريب في بغداد. تم تحليل النماذج التي اخذت من العلف والتربة والتقاوي والحليب وبراز البقر. لقد وجد ان معدل تحلل وتراكم المبيدات نوع (PCBs ) تبلغ 202.6 مايكروغرام / اليوم. وان المبيدات التي تدخل البقر عن طريق الطعام (العلف) اكثر منه عن طريق التقاوي و التربة . ان تركيز الملوثات الداخلة الى البقر عن طرق الماء والهواء يكون قليل جدا ويمكن اهماله وكذلك تركيز الملوثات في البول قليل ويمكن اهماله. كذلك وجد ان 62.5% من هذه الملوثات تخرج جسم البقرة عن طريق الحليب بينما 37.5 % يخرج عن طريق البراز


Article
The Consequences of PCBs and BPA Resulting from Terrorist Operations in Three Regions of Baghdad on Thyroid Function

Authors: Alaa H. Jawad --- Sara J. Kadhim --- Zyad H. Jawad Al-Qaisi
Journal: Al-Nahrain Journal of Science مجلة النهرين للعلوم ISSN: (print)26635453,(online)26635461 Year: 2018 Volume: 21 Issue: 3 Pages: 98-104
Publisher: Al-Nahrain University جامعة النهرين

Loading...
Loading...
Abstract

Persistent organic pollutants polychlorinated biphenyls (PCBs) and bisphenol-A (BPA) are widely known of being toxicants. Exposure to a variety of dangerous toxic effects has been attached in all humans .in this paper the effect of terrorist operation on thyroid gland functions in a sample of Iraqi individual (AL-karradah and Abo-Gharib) comparison with Al-jadria rejoin as (control). The correlation between sera thyroid hormones thyroxine T4, triiodothyronine T3, Thyrotropin TSH and the levels of polychlorinated biphenyls (PCBs) and bisphenol-A (BPA) have been measured. 75 volunteers from three Iraqi areas were included in this study‎. Their ages ranged between (15-65) years. Our examination proposes an inverse relationship between BPA presentation and thyroid hormones. In this manner, increased persistent organic pollutants exposure might be a factor in the causes of hypothyroidism ‎and thyroid gland function. The result of this study showed that the effect of persistent organic pollutants polychlorinated biphenyls (PCBs) and bisphenol-A (BPA) on thyroid hormones, and the effect of military and terrorist operations on the thyroid gland. In the end we concluded that persistent organic pollutants resulting from the explosions and terrorist operations in the area of (Al-karadah, Abo-Gharib) high compared with the control (Al-jadria) as the lowest percentage of pollution, this leads to many diseases on the health of the human body and also the effect of persistent organic pollutants on the thyroid gland and its negative effect on thyroid hormones and cause thyroid disease.

Listing 1 - 3 of 3
Sort by
Narrow your search

Resource type

article (3)


Language

Arabic and English (1)

English (1)


Year
From To Submit

2018 (1)

2013 (1)

2012 (1)