كلية العلوم

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حول كلية العلوم

كلية العلوم هي احدى الكليات التابعة لجامعة الزيتونة. 

من يعمل بـكلية العلوم

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د. عبدالفتاح البشير جمعة البركي
كلية العلوم - جامعة الزيتونة
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د. نجمى منصور احمد الصاوط
كلية العلوم - جامعة الزيتونة
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د. رجب عمر محمد الوهيبي
كلية العلوم - جامعة الزيتونة

منشورات مختارة

بعض المنشورات التي تم نشرها في كلية العلوم

Pesticide Residues in Some Types of Spices Collated from Libyan Market

The investigation aimed to study the contamination of locally marketed spices in Tripoli (caraway, cumin, cinnamon, mixed spices, black pepper, and red pepper) during (2014). Sixty samples of various kinds of spices were extracted and determined for residues of organophosphorus (malathion, methylparathion, parathion, carbo-phenothiate and ethion) and organochlorine pesticides (aldrin, BHC, heptachlore, lindane, DDT, endrin, heptachlor epoxide and dieldrin).The obtained results demonstrated that organophosphorus pesticides were not detected in all of the analyzed samples except for ethion which was found in concentration of (2.3±0.03, 4.5±0.09, 0.9±0.01, 1.9±0.05, 1.4±0.07, and 2.7±0.08 μg/kg) in caraway, mixed spices, cinnamon, black pepper, cumin and red pepper, respectively. While the residues of some organochlorine pesticides (aldrin, lindane, endrin and dieldrin) were 1.57±0.04, 0.8±0.08, 2.1±0.02 and 10.76±0.1 μg/kg in caraway, respectively; 2.1±0.4, 3.4±0.07, 1.8±0.09 and 2.3±0.1μg/kg in mixed spices, respectively; 3.45±0.07, 1.2±0.01, 2.41±0.05 and 2.57±0.03 μg/kg in cinnamon, respectively; 3.1±0.03, 2.75±0.3, 1.96±0.09 and 1.3±0.7 μg/kg in black pepper, respectively; 1.4±0.08, 2.8±0.01, 1.4±0.07 and 1.2±0.03 μg/kg in red pepper, respectively; 7.6±0.1, 12.1±0.09, 9.8±0.1 and 10.2±0.2 μg/kg in cumin, respectively. However, residues of BHC, heptachlore, total DDT and heptachlore epoxide were not detected
نجمى الصاوط, (9-2017)

Simulation of Double Pendulum

In this paper, the simulation of a double pendulum with numerical solutions are discussed. The double pendulums are arranged in such a way that in the static equilibrium, one of the pendulum takes the vertical position, while the second pendulum is in a horizontal position and rests on the pad. Characteristic positions and angular velocities of both pendulums, as well as their energies at each instant of time are presented. Obtained results proved to be in accordance with the motion of the real physical system. The differentiation of the double pendulum result in four first order equations mapping the movement of the system
, , (4-2017)

Mostafa Abdoarrahem (2015) Germination genes of Bacillus thuringiensis subsp. Israelensis. Germany, LAP Lambert Academic Publishing

Bacillus thuringiensis subsp. israelensis is the most important biological insecticide for the control of mosquito vectors of disease. This bacterium produces toxins during sporulation that cause larval death by lysis of cells in their midgut. The pBtoxis plasmid of B. thuringiensis subsp. israelensis encodes all the mosquitocidal toxins and a number of other coding sequences. The plasmid also carries potential germination genes organised in a single ger operon. Comparison of the germination responses of spores from strains with and without pBtoxis revealed that this plasmid could promote activation of the spores under alkaline conditions but not following heat treatment. Introduction of the ger operon on a recombinant plasmid to the plasmidless strain established this operon as the first with an identified role in alkaline activation
Mostafa Abdoarrahem, (6-2015)
staff photo

أ. محمد فرج الطاهر عبدالصادق

الهمالي هو احد اعضاء هيئة التدريس بقسم قسم العلوم البيئيه بكلية كلية العلوم. يعمل السيد الهمالي بجامعة الزيتونة كـمحاضر مساعد منذ 2016-12-05 وله العديد من المنشورات العلمية في مجال تخصصه