ibrabbas7

Prof. Dr. Ibrahim A. Abbas

Professor - Department of Mathematics

Faculty of science

Address: Sohag University, Egypt.

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2018-10-03 08:18:18 Keywords Sodmein, Dokhan volcanics, , Eastern Desert, Egypt, , Geochemistry,
Petrological and geochemical investigations of Dokhan volcanics in Wadi Sodmein area, Central Eastern desert, Egypt.
Wadi Sodmein area lies to the northwest of Quseir town on the Red Sea. The studied volcanic rocks are distinguished into Dokhan Volcanics and felsites. The Dokhan Volcanics are subdivided into two rock units, an older unit of andesite-dacite composition and a younger unit of rhyolite, rhyolitic tuffs and ignimbrite. They have petrographical and geochemical features similar to calc-alkaline, subduction-related ... Read more

2018-10-03 08:18:18 Keywords Sodmein, Dokhan volcanics, , Eastern Desert, Egypt, , Geochemistry,
Petrological and geochemical investigations of Dokhan volcanics in Wadi Sodmein area, Central Eastern desert, Egypt.
Wadi Sodmein area lies to the northwest of Quseir town on the Red Sea. The studied volcanic rocks are distinguished into Dokhan Volcanics and felsites. The Dokhan Volcanics are subdivided into two rock units, an older unit of andesite-dacite composition and a younger unit of rhyolite, rhyolitic tuffs and ignimbrite. They have petrographical and geochemical features similar to calc-alkaline, subduction-related ... Read more

2018-10-03 09:07:32 Keywords Hammamat sediments, , Pan-African, W. El Miyah, , Eastern Desert, Egypt.,
Structural elements and metamorphism controlling the late Pan-African Hammamat sediments at the Up-stream of Wadi El-Miyah, Central Eastern Desert, Egypt.
The Hammamat sediments at the Upper stream of Wadi El Miyah, Central Eastern desert of Egypt, occupy two isolated basins separated from each other by metavolcanics associated with their equivalent volcanoclastics and intruded by the younger granites. In the Eastern basin, the Hammamat succession rests unconformably over the metavolcanics, with basal conglomerates up to 5 m thick, and four distinct ... Read more

2018-10-03 09:07:32 Keywords Hammamat sediments, , Pan-African, W. El Miyah, , Eastern Desert, Egypt.,
Structural elements and metamorphism controlling the late Pan-African Hammamat sediments at the Up-stream of Wadi El-Miyah, Central Eastern Desert, Egypt.
The Hammamat sediments at the Upper stream of Wadi El Miyah, Central Eastern desert of Egypt, occupy two isolated basins separated from each other by metavolcanics associated with their equivalent volcanoclastics and intruded by the younger granites. In the Eastern basin, the Hammamat succession rests unconformably over the metavolcanics, with basal conglomerates up to 5 m thick, and four distinct ... Read more

Subduction-related Wadi Dabr  metagabbro-diorite complex, intrusive gabbros and the enclosed opaques, Central Eastern Desert, Egypt.
The Dabr metagabbro-quartz diorite intrusion (DMQD), commonly described as metagabbro-diorite complex, occurring along Wadi Dabr, forms an elongated mass intruded into the metavolcanics and associated pyroclastics. It is intruded by younger gabbro (Ygb) and younger granites. The DMQD comprises metagabbro, diorites , quartz diorite and appinites.. Variation diagrams of the DMQD suggest fractional crystallization by separation of pyroxene followed by ... Read more

Subduction-related Wadi Dabr  metagabbro-diorite complex, intrusive gabbros and the enclosed opaques, Central Eastern Desert, Egypt.
The Dabr metagabbro-quartz diorite intrusion (DMQD), commonly described as metagabbro-diorite complex, occurring along Wadi Dabr, forms an elongated mass intruded into the metavolcanics and associated pyroclastics. It is intruded by younger gabbro (Ygb) and younger granites. The DMQD comprises metagabbro, diorites , quartz diorite and appinites.. Variation diagrams of the DMQD suggest fractional crystallization by separation of pyroxene followed by ... Read more

2018-09-24 17:15:50 Keywords , Diphenylcyclohexene Chromen,
Design, Synthesis and Antibacterial Evaluation of some new 3,5-Diphenylcyclohex-2-en-1-one Derivatives
The moiety of cyclohexene has been showed highly antibacterial activity. New compounds were synthesized from diphenylcyclohexenone via reaction with a variety of reagents to afford branched chain of 1,3-diphenylcyclohexene or fused heterocyclic systems including pyrazole, chromen and pyrrole derivatives. Cyclic ketoketene _s,s_-acetal can be prepared by reaction with CS2/MeI under PTC conditions which in turn used as starting material for ... Read more

Distribution and morphology of defensive acid-secreting glands in Nudipleura (Gastropoda: Heterobranchia), with an emphasis on Pleurobranchomorpha.
Secretion of acidic substances with defence and repellent properties is known in several metazoan taxa, including Gastropoda. Here we investigate and compare defensive acid-secreting cell types of various genera within the heterobranch taxon Pleurobranchomorpha by analysing the sizes and distribution of the secretory epithelial cells and subepithelial glands of the epidermis. Additionally, we investigate the median buccal gland (MBG), which ... Read more

INVESTIGATING THE EFFECTS OF CEMENT AND CEMENT KILN DUST AS A FILLER ON THE MECHANICAL PROPERTIES OF COLD BITUMINOUS EMULSION MIXTURES
The application of cold mixes is lagging behind in the research field, which is quite obvious in a developing country. Furthermore, cold mixes have more economic and environmental advantages than hot mixes. This is the principal motivation for the present research, which aims to improve the mechanical properties of cold mix asphalt. Ordinary Portland cement (OPC) and cement kiln dust ... Read more

2018-09-25 09:27:24 Keywords , ORL involvement, Pulmonary TB,
Otorhinolaryngological manifestations of pulmonary tuberculosis
Tuberculosis (TB) is an important re-emerging disease with increasing global morbidity and mortality. Pulmonary involvement is the commonest form of TB and otorhinolaryngologic (ORL) manifestations are common presentations in patients with pulmonary TB (PTB). To evaluate the prevalence of ORL lesions and their effects in these patients this study was prospectively designed. One hundred consecutive patients with newly diagnosed PTB ... Read more