331 research outputs found
Study the Effect of Lead Acetate and the Water Extracted (Melissa Officinalis) on Physiological and Antioxidative State of the Seminal Fluid of Rooster, Ross 308
أجريت الدراسة في مختبرات الكلية التقنية /المسيب وفي قسم علوم الحياة/جامعة بابل وفي حقل طيور الجفلاوي في بابل للمدة من تشرين الأول 2018 ولغاية آذار2019 لقياس تأثير كل من المستخلص المائي لحشيشة النحل Melissa officinalis وخلات الرصاص Lead acetate في المعايير الفسلجية الخاصة بالتكاثر وحالة التضاد التأكسدي في السائل المنوي لديكة دجاج Ross 308. أستعمل في الدراسة 100 ديك من سلالة Ross 308 وبعمر 60-56 أسبوع وبمعدل وزن 6-5 كغم وزعت بصورة عشوائية الى أربع مجاميع متساوية، المجموعة الأولىA)) أعطيت الماء المقطر وعدت مجموعة السيطرة، المجموعة الثانيةB) ) أعطيت المستخلص المائي لأوراق حشيشة النحل بتركيز100ملغم/كغم من وزن الجسم/لتر والمجموعة الثالثة (C) أعطيت خلات الرصاص عن طريق مياه الشرب بتركيز0.5ملغم/كغم من وزن الجسم/لتر والمجموعة الرابعة (D) أعطيت الماء الحاوي على المستخلص المائي لحشيشة النحل 100ملغم/كغم/لتر و 0.5 ملغم/كغم/لتر من خلات الرصاص في ماء الشرب. وتم جمع السائل المنوي أسبوعياً لغرض قياس حجم وتركيز النطف وقياس التشوهات ومقاومة النطف للأملاح وقياس نسبة الحركة الجماعية والفردية للنطف ثم قيست حالة التضاد التأكسدي في البلازما المنوية بفحص تركيز كل من القابلية الكلية المضادة للأكسدة TAC والمالونداي الديهايد MDA، وتمت دراسة وزن الخصى ووزن الجسم.
أظهرت الدراسة زيادة معنوية في وزن الجسم والخصية وزيادة في حجم القذفة وتركيز النطف ومقاومة الملح والحركة الفردية والجماعية في المجموعة (B) التي أعطيت المستخلص المائي لحشيشة النحل وزيادة معنوية في نسبة التشوهات في المجموعة (C) التي أعطيت خلات الرصاص بماء الشرب. كما أظهرت الدراسة زيادة عالية المعنوية في TAC في البلازما المنوية في المجموعة (B) في حين أظهرت الدراسة زيادة معنوية في MDA في البلازما المنوية في المجموعة (C) مقارنة بمجموعة السيطرة.The study was carried out in the Laboratories of Al-Mussyab Technical college and in biology Department/Babylon university and Al-Jafflawy Avian farm in Babylon. During the period from October 2018 until March 2019 to investigate the effect water extracted of Melissa officinalis and Lead acetate in drinking water on semen physiological parameter and antioxidant status of Ross 308 Roosters.
The study was held on 100 Roosters of Ross 308 at the age of 56-60 weeks with average weight 5-6 Kg. The Roosters were randomly distributed in equal groups. The First group(A) was given distilled water which regarded as control. The second group (B) was given the water extracted of Melissa officinalis leaves in the level of 100mg/Kg of body weight/L. The third group (C) was given Lead acetate in drinking water 0.5 mg/Kg of body weight/L. The Fourth group (D) which was given water extract of Melissa officinalis (100mg/Kg of B.W/L) and (0.5mg/Kg of B.W/L) of Lead acetate in drinking water. The semen was collected weekly to evaluate the ejaculated volume concentration, abnormalities, sperm resistance to salt and level of individual and mass mortality. The antioxidant status was evaluated by measuring malondialdehyde ( MDA) and total antioxidant capacity (TAC) also, body and testes weight was gain weekly.
The study demonstrated that there was a significant increase in seminal ejaculate volume and concentration, salt-resistance and individual and mass mortality in the group(B) which given the water extracted of Melissa officinalis, and there was a significant increase in seminal abnormalities in the group(C) which given Lead acetate in drinking water. So the study demonstrated that there was a significant increase in TAC Level in seminal plasma of group(B) when there was a significant increase in Level of MDA in seminal plasma of group(C)
The Effect of Load Magnitude on Fatigue Life and Thermal Behavior of Notched Fatigue Specimen
ظاهرة الكلل هي مهمة تحدث في النظم الميكانيكية والهيكلية. وعلاوة على ذلك, الفشل بسبب الحمل الكلل يسبب فشل النظام الميكانيكي. وقد أجريت العديد من الأبحاث لدراسة سلوك الكلل وتحسين تصميم النظم الميكانيكية والهيكلية من أجل زيادة مقاومة الكلل لهذه الانظمة.
في هذا العمل، تم دراسة آثار موضع الحز ومقدار الحمل على سلوك الكلل. من أجل دراسة عمر الكلل لعينات الاختبار بجعل حز بشكل (V) اتستخدمت عينات الذراع الناتئ الدوار(rotating cantilever beam). أيضا، توزيع درجة الحرارة على طول عينات الاختبار كانت مراقبة بواسطة كاميرا الأشعة تحت الحمراء خلال اختبارات الكلل. تم تنفيذ النموذج العددي باستخدام ((ANSYS Workbench 15.0. أجريت المقارنة بين النتائج العملية والعددية، كما تم قياس صلادة الأسطح التي تعرضت للكسر.
يمكن زيادة عمر الكلل لعينات الاختبار من خلال جعل الحز في الموقع المناسب. أيضا، هناك تشابه في السلوك بين النتائج العملية والعددية. أعطت كاميرا الأشعة تحت الحمراء توقعا جيدا لموقع كسر من تغيير في توزيع درجة الحرارة على طول عينات الاختبار. وأخيرا، مساحة منطقة الكسر المفاجئ في الأسطح المكسورة قلت طرديا مع مقدار الحمل وعكسيا مع تغيير موقع الشق بعيدا الى نهايه.Fatigue failure is an important phenomenon that occurred in the mechanical and structural systems. Furthermore, the failure due to fatigue load causes losing in that system. So many researches studying the fatigue behavior and improving the design of mechanical and structural systems in order to increase the fatigue resistance of these systems.
In this work, the effects of notch position and load magnitude on fatigue behavior were studied. In order to study the fatigue life of the test specimens due to make V- notched, the rotating cantilever beam samples were used. Also, the temperature distribution along testing specimens was monitoring of IR camera during the fatigue tests. Numerical model has been done by using ANSYS Workbench 15.0. The comparison between experimental and numerical results was made, also the hardness of the fractured surfaces was measured.
The results show that, the fatigue life of the test specimens can be increased by making a notch in the appropriate position. Also, there is a similarity between experimental and numerical results. IR camera gave a good expectance to the fracture position from changing in temperature distribution along the test specimens. Finally, the area of sudden fracture of the fractured surfaces reduced directly with load magnitude and inversely with notch shifting away from edge region
تقييم جودة البرامج األكاديمية في كليات العلوم التربوية في الجامعات اليمنية مقترحات تطويرها من وجهة نظر أعضاء هيئة التدريس
This study aimed at identifying the extent of applying quality standards in the academic programs in the faculties of educational science in Yemeni universities suggested solutions from the perspective of the educational staff. The study used the descriptive analytical and the qualitative approaches. The study used a questionnaire as a tool, which consisted of (110) paragraphs, distributed into ten domains. The questionnaire was administered to a sample of (97) faculty members from the faculties of educational sciences in Yemeni universities. The results of the study revealed that the extent of applying quality standards in the academic programs in the faculties of educational science in Yemeni universities from the perspectives of faculty members came in a medium score in nine dimensions. The extent of applying the quality standards in the academic programs in the dimension of civil service was low. The study came up with (21) suggestions to develop applying quality standards in the academic programs in the faculties of educational science in Yemeni universities
The Integration of FAO-CropWat Model and GIS Techniques for Estimating Irrigation Water Requirement and
ABSTRACT In the Gaza Strip irrigation practices are only based on the farmer's own experience, they determine when and how t
Sporadic Lateral Ventricular Hemangioblastoma presenting with Intraventricular and Subarachnoid Haemorrhage
Intraventricular hemangioblastoma (HB) is very rare; few cases of intraventricular HB have been reported in the literature, either sporadically or in association with von Hippel-Lindau disease. Furthermore, the incidence of ventricular haemorrhage from HB seems to be uncommon. We report a unique case of sporadic HB of the right lateral ventricle presenting with intratumoural and intraventricular haemorrhage in addition to multifocal intracranial superficial siderosis, indicating the presence of a subarachnoid haemorrhage (SAH) as well. Such a combination has not been reported before. In the future, the detection of an intraventricular mass in association with ventricular haemorrhage, with or without SAH, should include HB as a differential diagnosis, particularly when the imaging appearances are not typical of the more common intraventricular tumours
Prevalence and pattern of endocrinological abnormalities in oligospermic and azoospermic patients.
Background: Hormones have very important role in spermatogenesis and production capacity of testis. Disturbances in their vlevels can be very crucial in dysfunction of testis which results in men infertility. This study carried out to evaluate the hormonal disturbances in men infertility and its correlation with semen parameters and types of infertility.
Patients and Methods: Blood and semen samples were collected from 91 infertile men and 20 healthy and fertile control who attended Al-Kadymiah hospital and some private clinics in Baghdad from January to December 2009.Semen and serum samples were analysed for semen parameter and FSH, LH, Testosterone and prolactin levels.
Results: Fifty one (56%) of infertile men were found with azoospermia, 22(24%) were with mildoligospermia and 18(20%) were with severoligospermia.Semen analysis of infertile men showed very low quality parameters with a non homogenized hormonal results.Elevation of FSH and LH with low level of testosterone were detected in azoospermic and Severoligospermic groups, while elevation of FSH with hyperprolactinaemia were detected in mildoligospermia.
Conclusion: FSH and LH elevated levels were found to have a major role in azoospermia and severoligospermia, while prolactine and FSH elevations were correlated with mildoligospermia. Also these hormonal disturbances were found to associate with the quality of the semen where the low semen quality parameters detected in those with FSH, LH elevation and low level of testosterone. We concluded that hormonal disturbances can be considered as a reliable indicator to distinguish between non obstructive (over levels of FSH, LH and decrease level of testosterone) and obstructive (over levels of FSH,prolactin) types of infertility which is very important in therapy
Household Water Balance is a Strategy toward Water Security: Abasan Al-Kabera as a Case Study
Researchers adopt models prepared for the developed countries as solutions for environmental problems in countries lacking the technical and economic management of these models. In this study, a viable model at household level is adopted to reuse the grey water to contribute to the water balance. Abasan Al-Kabera is studied specifically due to its rural and urban characteristics. The model constitutes of rain water collection from rooftops and public buildings as well as graywater reuse in flashing the toilet while the surplus will be injected through the unit of rainwater. The total inflow to the aquifer from storm water accounted for 1,756,875 m3/year out of it 146,060 collected from the rooftops of public buildings and household rooftops while the recovery of greywater is 571,536 m3/year, additionally the estimated return flow from irrigation equals 506220 m3/year, resulted in total inflow of 2,483,256 m3/year. While the outflow components are domestic demand 738,895 m3/year and agricultural demand equals 1,687,400 m3/year assuming all the agricultural lands are planted according to the structural plan of Abasan, giving total outflow of 2,426,295. In conclusion the water balance is achieved, but it required to adopt proper storm water collection system in the level of household and from agricultural areas. Moreover the greywater treatment and reuse systems should be developed and enhanced to guarantee the quality of groundwater recharge
Cations and Anions in Sewage Sludge from Gaza Waste Water Treatment Plant
This paper determined cations and anions concentrations, Total Kjeldahl Nitrogen (TKN), and heavy metals content in sewage sludge collected from the drying beds of wastewater treatment plant in Gaza. The aim was to test the possibility of using this sewage sludge as an alternative source of mineral fertilizers. Many instruments were used in this work: flame photometry (K, Na), EDTA titration (Ca, Mg), the turbidity method ()
Physicochemical properties of sewage sludge from Gaza
This study characterized the physicochemical properties of sewage sludge collected from Gaza wastewater treatment plant. Sludge samples were collected from the drying beds, air-dried, sieved through 2 mm and stored in plastic bags at room temperature. Sludge density, particle size distribution, water holding capacity, void volume, pH, EC, total organic carbon and hydrophobicity were determined. Results showed the bulk density is about 1.18 g/cm3 whereas the real density is 2.12 g/cm3 and void volume is 50%; Particle size distribution showed that the major size of sludge is sand-like size (630-200 µm) and the minor size is silt-like size (200-20 µm) and clay-like size are less than 20 µm. Sludge has an acidic pH reaction (6.78±0.02) with an electric conductivity equal to (2.49±0.04) mS∙ cm− 1. The hydrophobicity of sludge is very high, water drop penetration time (WDPT) is 114.77±18.78 sec with a radius of 0.44±0.08 cm. In the way around, oil drop penetration time (ODPT) of sludge is 5.05±1.28 sec with a radius of 1.25±0.14 cm. The WDPT/ODPM ration is very high value 22.73 indicating extreme hydrophobicity. High value of hydrophobicity may reduce water filtration in soil when sludge applied for agriculture. These results suggest that sludge application to soil may change the physicochemical properties of soil
Effect of mixed and artificial feeding on the growth performance of Gattan Luciobarbus xanthopterus Heckel, 1843 larvae
This work aimed to study the rearing feasibility of Luciobarbus xanthopterus larvae using artificial and mixed (live (Chlorella sp.) + artificial) food and their effects on their growth performance during early development. Larvae (1.65 cm in length and 0.02 g weight) were obtained from a Marine Science Hatchery and cultured in indoor tanks for 35 days. the larvae fed mixed feed T1 and artificial feed T2 (fish meal + soybean meal). The results showed that the larvae of T1 treatment outperformed significantly in final length, final weight, final weight gain, daily and specific growth rate, which amounted to 3.44 cm, 0.3568 g, 0.3368 g, 0.0096 g/day, and 8.2185 % weight/day, respectively. Also, the results showed that larvae fed on T1 grew faster. The present study showed that applying a mixture of artificial and live food after four weeks' age i.e. after absorption of the yolk sac for feeding larvae can reduce the costs of producing and providing better growth and survival rates
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