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كلية العلوم هي احدى الكليات التابعة لجامعة الزيتونة. 

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د. عبدالمنعم عبدالسلام عبدالله البركي
كلية العلوم - جامعة الزيتونة
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د. محمود اشتيوي صالح اشتيوي
كلية العلوم - جامعة الزيتونة
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د. نجمى منصور احمد الصاوط
كلية العلوم - جامعة الزيتونة

منشورات مختارة

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Optimization of Central Patterns Generators (CPGs)

The issue of how best to optimize Central Patterns Generators (CPG) for locomotion to generate motion for one leg with two degrees of freedom has inspired many researchers to explore the ways in which rhythmic patterns obtained by genetic algorithms may be utilized in uncoupled, unidirectional and bidirectional two CPGs. This paper takes as its assumption that the focus on stability analysis to decrease variation between steps brings about better results with respect to the gait locomotion, and argues that controlling the amplitude and frequency may lead to more robust results viz., stimulation for movement
عبدالفتاح البشير جمعة البركي, (3-2017)

Palynofacies and geochemical analyses of the Silurian Tanezzuft Formation, NC115 concession, Murzuq Basin, south-west Libya: Implications for source rock potential and palaeoenvironment

 A palynofacies and organic geochemical investigation has been undertaken on 46 core and cuttings samples taken from seven wells drilled in the NC115 Concession, Murzuq Basin, south-west Libya. Most of the samples yielded marine and non-marine palynomorphs in a fair to good state of preservation, which together with palynological data have been used to confirm the age, determine the environment of deposition, and evaluate the petroleum source potential of the Tanezzuft Formation. The palynological assemblage recovered from the basal Hot Shale contains an abundance of acritarchs, chitinozoans and cryptospores, with some taxa, such as Plectochitina sp., Evittia remota, and Tetrahedraletes medinensis, indicating an early–mid Rhuddanian (early Llandovery) age for this unit. The deposits overlying the Hot Shale yielded diverse assemblages of palynomorphs, the occurrence of Angochitina qusaibaensis and Leiofusa banderillae in particular indicating a late Rhuddanian–Telychian (Llandovery) age. Two palynofacies associations have been identified. The Hot Shale palynofacies (PF-A) contains Type-II ≥ I kerogen, which is highly oil-prone and reflects a distal suboxic–anoxic sedimentary environment. The palynofacies of the overlying deposits of the Tanezzuft Formation (PF-B) is dominated by Type-II/III kerogen, which is both oil- and gas-prone, and indicates depositional conditions that range from distal dysoxic–oxic shelf to mud-dominated oxic shelf (distal shelf). Rock-Eval pyrolysis results indicate that the Hot Shale is organically-rich with an average total organic carbon (TOC) content 7.23 wt%, whereas the TOC of the overlying deposits averages 0.62 wt%. The organic matter in the Hot Shale has the capability of generating more liquid hydrocarbons than the rest of the formation, which lies within the early oil-maturity window. A simulated burial history for the NC115 Concession allowed the time and magnitude of hydrocarbon generation from the main Silurian Tanezzuft Formation source rock to be determined. Oil generation from this source rock took place during the Carboniferous/mid-Cretaceous period, whereas the maturation level for gas had not been reached at this stage.
وايد الديسطي, صلاح البيلي, طارق النواري, ديفيد باتن, (3-2019)

Bifurcation and Stability of Reaction Diffusion Equations

The abstract theory applies to examples of algebraic equations and nonlinear boundary value problems are discussed, including systems of reaction diffusion equations. The link s between bifurcation and stability showing are also investigated, the study discusses how increasing a diffusion coefficient in a reaction-diffusion system can lead to bifurcation and also to a stable solution becoming unstable.
عبدالفتاح البركي, علي البشير جمعة البركي, (12-2020)
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د. جمعه صالح عيسي ابوداقل

جمعه ابوداقل هو احد اعضاء هيئة التدريس بقسم قسم الفيزياء بكلية . يعمل السيد جمعه ابوداقل بجامعة الزيتونة كـاستاذ مساعد منذ 2008-09-01 وله العديد من المنشورات العلمية في مجال تخصصه