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High-order, stable, and efficient pseudospectral method using barycentric Gegenbauer quadratures

Research Abstract

NULL

Research Authors
Kareem T. Elgindy
Research Department
Research Journal
Applied Numerical Mathematics
Research Member
Research Pages
pp. 1–25
Research Publisher
Elsevier
Research Rank
1
Research Vol
Volume 113
Research Website
http://www.sciencedirect.com/science/article/pii/S016892741630215X
Research Year
2017

High-order adaptive Gegenbauer integral spectral element method for solving non-linear optimal control problems

Research Abstract

NULL

Research Authors
Kareem T. Elgindy
Research Department
Research Journal
Optimization
Research Member
Research Pages
pp. 811–836
Research Publisher
Taylor & Francis
Research Rank
1
Research Vol
Volume 66 - Issue 5
Research Website
http://www.tandfonline.com/eprint/tYdwG7sFKynUzBNwYbC5/full
Research Year
2017

On the optimization of Gegenbauer operational matrix of integration

Research Abstract

NULL

Research Authors
Kareem T. Elgindy, Kate A. Smith-Miles
Research Department
Research Journal
Advances in Computational Mathematics
Research Member
Research Pages
pp. 511–524
Research Publisher
Springer US
Research Rank
1
Research Vol
Volume 39
Research Website
http://link.springer.com/article/10.1007%2Fs10444-012-9289-5
Research Year
2013

Local discontinuous Galerkin method for distributed-order time and space-fractional convection–diffusion and Schrödinger-type equations

Research Abstract

NULL

Research Authors
Tarek Aboelenen
Research Department
Research Journal
Nonlinear Dynamics
Research Pages
NULL
Research Publisher
NULL
Research Rank
1
Research Vol
NULL
Research Website
NULL
Research Year
2018

Optical parameters and dispersion behavior of potassium magnesium
chloride sulfate single crystals doped with Co+2 ions

Research Abstract

Single crystals of potassium magnesium chloride sulfate (KMCS) doped with cobalt ions were grown by slow
cooling method. Powder XRD study confirmed the monoclinic structure of the grown crystals. The functional
group vibrations were checked through FTIR spectroscopymeasurements. In optical studies, the absorbance behavior
of the crystals and their optical energy gapwere established by Tauc plot. The refractive index, the extinction
coefficient and other optical constants were calculated for the grown crystals. The normal dispersion of the
refractive index was analyzed according to single oscillator Sellmeier's model. The Urbach's rule was applied to
analyze the localized states density in the forbidden gap

Research Authors
A. Abu El-Fadl , A.M. Abd-Elsalam
Research Department
Research Journal
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
Research Pages
pp. 367–374
Research Publisher
NULL
Research Rank
1
Research Vol
Vol. 196
Research Website
NULL
Research Year
2018

Temporal analysis of 16 STR loci in human blood drawn from two culicid mosquitoes cultured at different temperatures

Research Abstract

Female mosquitoes feed on human blood, which can be collected to analyze human short tandem repeat (STR) sequences; these are specific to each human individual. Analysis of STRs might help in identification of a person found near a crime scene. Aedes aegypti and Culex pipiens mosquitoes fed on human blood were cultured at 18°C or 40°C (median temperature for summer and winter time in Riyadh governorate, Saudi Arabia) for 3, 6, 12, 24, 48 and 72 h. In A. aegypti, human DNA concentration was reduced with time at both temperatures. At 18°C, we obtained full STR profiles up to 48 h post feeding on human blood while none of the 16 loci were obtained at 72 h. At 40°C, we missed six sites at 12 h after blood sucking, 12 at 24 h, and 15 at 48 h and 72 h. In C. pipiens cultured at 18°C, full profiles were developed up to 48 h following blood feeding while we could not amplify five sites at 72 h. At 40°C, mortality among females was 50% at 24 h and 100% at both 48 h and 72 h; however, we had full profiles in all samples including dead insects. This research addressed the possibility of using mosquitoes in forensic research by DNA genotyping by changing the mosquito culturing temperature and mosquito genus. Our findings proved that different types of mosquito change the temporal pattern of STR analysis and showed that the mosquito culturing temperature affects the integrity of DNA for STR analysis.

Research Authors
A Ibrahim, LA Alrakan, SA Alaifan, Fahd Almekhlafi and Ahmed Ch. Kassab
Research Department
Research Journal
Entomological research
Research Pages
268-274
Research Publisher
Wiley
Research Rank
1
Research Vol
45(5)
Research Website
http://onlinelibrary.wiley.com/doi/10.1111/1748-5967.12123/full
Research Year
2015

Cosmetic and pharmaceutical qualifications of Egyptian bentonite and its suitability as drug carrier for Praziquantel drug.

Research Abstract

The aim of this paper is to characterize and evaluate newly discovered bentonite deposits in Egypt for pharmaceutical and cosmetic applications as well as its suitability as carrier for Praziquantel drug. The study was performed for the raw bentonite sample, purified bentonite sample and alkali activated purified bentonite sample. The raw bentonite sample composed mainly of montmorillonite contaminated by little amounts of quartz and calcite, while the purified sample composed of montmorillonite without detected mineral impurities and matches the mineralogical properties of Wyoming bentonite as an international standard. Geochemically, the studied raw and purified samples appear to high purity with a chemical composition close to those of Wyoming bentonite and match the pharmacopeia specifications. The chemical properties in addition to the textural properties of the surface area, porosity, particle size distribution qualify the bentonite products to use as a function in powder, emulsion and creams. Investigation of pharmacopeia properties of pH, sedimentation volume and swelling capacity revealed the suitability of the raw and purified samples for pharmaceutical and cosmetic applications. Moreover, the microbiological tests indicated that the samples free from harmful microbial pathogens. At the optimum conditions of time (240 min), bentonite dose (250 mg) and reaction temperature (60 °C), the obtained encapsulation percentages of Praziquantel drug are 62%, 78.4% and 93.2% for raw bentonite, purified and alkali activated bentonite, respectively. The releasing percentage of the drug using an intestinal buffer at pH 7.4 is more efficient and the maximum obtained values were obtained after 420 min. The obtained releasing values are 71%, 79.2% and 87.4% for raw bentonite, purified bentonite and alkali

Research Authors
FM Dardir, AS Mohamed, MR Abukhadra, EA Ahmed, MF Soliman
Research Department
Research Journal
European journal of pharmaceutical sciences: official journal of the European Federation for Pharmaceutical Sciences
Research Member
Research Pages
PP.320-329
Research Publisher
NULL
Research Rank
1
Research Vol
Vol.115
Research Website
http://europepmc.org/abstract/med/29414308
Research Year
2018

Cosmetic and pharmaceutical qualifications of Egyptian bentonite and its suitability as drug carrier for Praziquantel drug.

Research Abstract

The aim of this paper is to characterize and evaluate newly discovered bentonite deposits in Egypt for pharmaceutical and cosmetic applications as well as its suitability as carrier for Praziquantel drug. The study was performed for the raw bentonite sample, purified bentonite sample and alkali activated purified bentonite sample. The raw bentonite sample composed mainly of montmorillonite contaminated by little amounts of quartz and calcite, while the purified sample composed of montmorillonite without detected mineral impurities and matches the mineralogical properties of Wyoming bentonite as an international standard. Geochemically, the studied raw and purified samples appear to high purity with a chemical composition close to those of Wyoming bentonite and match the pharmacopeia specifications. The chemical properties in addition to the textural properties of the surface area, porosity, particle size distribution qualify the bentonite products to use as a function in powder, emulsion and creams. Investigation of pharmacopeia properties of pH, sedimentation volume and swelling capacity revealed the suitability of the raw and purified samples for pharmaceutical and cosmetic applications. Moreover, the microbiological tests indicated that the samples free from harmful microbial pathogens. At the optimum conditions of time (240 min), bentonite dose (250 mg) and reaction temperature (60 °C), the obtained encapsulation percentages of Praziquantel drug are 62%, 78.4% and 93.2% for raw bentonite, purified and alkali activated bentonite, respectively. The releasing percentage of the drug using an intestinal buffer at pH 7.4 is more efficient and the maximum obtained values were obtained after 420 min. The obtained releasing values are 71%, 79.2% and 87.4% for raw bentonite, purified bentonite and alkali

Research Authors
FM Dardir, AS Mohamed, MR Abukhadra, EA Ahmed, MF Soliman
Research Department
Research Journal
European journal of pharmaceutical sciences: official journal of the European Federation for Pharmaceutical Sciences
Research Member
Research Pages
PP.320-329
Research Publisher
NULL
Research Rank
1
Research Vol
Vol.115
Research Website
http://europepmc.org/abstract/med/29414308
Research Year
2018

Cosmetic and pharmaceutical qualifications of Egyptian bentonite and its suitability as drug carrier for Praziquantel drug.

Research Abstract

The aim of this paper is to characterize and evaluate newly discovered bentonite deposits in Egypt for pharmaceutical and cosmetic applications as well as its suitability as carrier for Praziquantel drug. The study was performed for the raw bentonite sample, purified bentonite sample and alkali activated purified bentonite sample. The raw bentonite sample composed mainly of montmorillonite contaminated by little amounts of quartz and calcite, while the purified sample composed of montmorillonite without detected mineral impurities and matches the mineralogical properties of Wyoming bentonite as an international standard. Geochemically, the studied raw and purified samples appear to high purity with a chemical composition close to those of Wyoming bentonite and match the pharmacopeia specifications. The chemical properties in addition to the textural properties of the surface area, porosity, particle size distribution qualify the bentonite products to use as a function in powder, emulsion and creams. Investigation of pharmacopeia properties of pH, sedimentation volume and swelling capacity revealed the suitability of the raw and purified samples for pharmaceutical and cosmetic applications. Moreover, the microbiological tests indicated that the samples free from harmful microbial pathogens. At the optimum conditions of time (240 min), bentonite dose (250 mg) and reaction temperature (60 °C), the obtained encapsulation percentages of Praziquantel drug are 62%, 78.4% and 93.2% for raw bentonite, purified and alkali activated bentonite, respectively. The releasing percentage of the drug using an intestinal buffer at pH 7.4 is more efficient and the maximum obtained values were obtained after 420 min. The obtained releasing values are 71%, 79.2% and 87.4% for raw bentonite, purified bentonite and alkali

Research Authors
FM Dardir, AS Mohamed, MR Abukhadra, EA Ahmed, MF Soliman
Research Department
Research Journal
European journal of pharmaceutical sciences: official journal of the European Federation for Pharmaceutical Sciences
Research Pages
PP.320-329
Research Publisher
NULL
Research Rank
1
Research Vol
Vol.115
Research Website
http://europepmc.org/abstract/med/29414308
Research Year
2018

The role of calcium, silicon and salicylic acid treatment in protection
of canola plants against boron toxicity stress

Research Abstract

Boron (B) toxicity often limits crop yield and the quality of production in agricultural areas. Here, we investigated the effects of calcium (Ca), silicon (Si) and salicylic acid (SA) on development of B toxicity, B allocation in canola (Brassica napus cultivar Sarw 4) and its role in non-enzymatic antioxidants in relation to yield of this cultivar under B toxicity. Canola seedlings were subjected to four B levels induced by boric acid in the absence or presence of Ca, Si and SA. The results showed that Ca, Si and SA addition ameliorated the inhibition in canola growth, water content (WC), and improved siliqua number, siliqua weight and seed index. The B content in shoots and roots and total B accumulation in the whole plant were increased in control plants under B-toxicity-stress, and these parameters were significantly decreased by addition of Ca, Si and SA. The shoot ascorbate pool (ascorbate, AsA, and dehydroascorbate, DHA), α-tocopherol and phenolics (free and bound) were increased under B toxicity, and were significantly decreased in most cases by addition of Ca, Si and SA, except α-tocopherol, which increased at low B levels (0, 25 and 50 mg kg soil−1). The glutathione content did not obviously change by B stress, while added Ca, Si and SA inhibited its accumulation under B stress. In addition, B toxicity reduced the shoot flavonoids content; however, this reduction was not alleviated by the use of Ca, Si and SA treatments. It could be concluded that growth and yield of canola plants grown under high B concentration improved after external application of Ca, Si or SA.

Research Authors
Ashraf M. Metwally, Abeer A. Radi, Rasha M. El‑Shazoly, Afaf M. Hamada
Research Journal
Journal of Plant Research
Research Pages
14
Research Publisher
Springer
Research Rank
1
Research Vol
NULL
Research Website
https://doi.org/10.1007/s10265-018-1008-y
Research Year
2018
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