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السجلات المعروضة 4561 -- 4570 من 18309
On the existence of positive solutions for generalized fractional boundary value problems
(
Springer
, 2019 , Article)
The existence of positive solutions is established for boundary value problems defined within generalized Riemann–Liouville and Caputo fractional operators. Our approach is based on utilizing the technique of fixed point ...
Unexpected adrenal pheochromocytoma associated with a generalized tonic-clonic seizure in a prepubertal boy: A case report.
(
Lippincott, Williams & Wilkins
, 2021 , Article)
Pheochromocytoma (PHEO) is a rare neuroendocrine tumor arising from chromaffin cells of the adrenal medulla. Most pediatric PHEOs are functional tumors, and clinical manifestations are related to catecholamine hypersecretion ...
Defective Interaction of Cam with RyR2 Cam-Binding Pocket Might Contribute to Arrhythmogenic Cardiac Disease
(
Elsevier
, 2020 , Article)
Ryanodine receptor 2 (RyR2) is a large transmembrane calcium (Ca2+) release channel that mediates Ca2 release from the sarcoplasmic reticulum to activate cardiac muscle contraction. Calmodulin (CaM) regulation of RyR2 is ...
Studies for determining antimicrobial activity of solenostemma argel (del) hayne. 1-extraction with methanol/water in different proportions
(
Qatar University
, 1994 , Article)
Aerial parts of Solenostemma argel plant were successively extracted with methanol/water in different proportions (4 fractions). The phytochemical and chromatographic screening as well as quantitative determination of the ...
Pandemic threatens to drive wedge into US-Gulf relations
(
Gulf Studies Center
, 2020 , Article)
It is early days, but first indications are that the global pandemic is entrenching long-drawn Middle Eastern geopolitical, political, ethnic, and sectarian battle lines rather than serving as a vehicle to build bridges ...
A Problem In Magneto-Thermoelasticity For A Hollow Circular Cylinder With Thermal Relaxation
(
Qatar University
, 1997 , Article)
The problem of an infinitely long annular cylinder whose inner surface is thermally insulated and whose outer surface is kept at a constant temperature is considered in the presence of an axial uniform magnetic field. The ...
Spectral method solutions of a variable aspect ratio duct flow in a uniform transverse magnetic field with two different thermal boundary conditions
(
Elsevier
, 2020 , Article)
© 2020 The Author(s) A laminar electrically-conducting flow inside an electrically-insulated rectangular duct in a uniform transverse magnetic field with both uniform surface temperature and uniform heat flux boundary ...
Karyotype, Meiosis And Sperm Formation In The Land Snail Macrochlamys Indica
(
Qatar University
, 1994 , Article)
Karyotype analysis, meiosis and sperm formation of the land snail Macrochlamys indica collected from different farms of ornamental plants in Doha city of the State of Qatar were investigated. The chromosome number is n=24 ...
Attenuation Of Bacillus Cereus Spores By Different Factors
(
Qatar University
, 1993 , Article)
The spore suspension of Bacillus cereus K] ]s was exposed to different concentrations of NaCl. NaNo3 and NaNC>2 as curing agents. The spores were able to tolerate 10% NaCl. Up to 4%, NaNC>3 had little or minor effects on ...
Enhancement in bell pepper (Capsicum annuum l.) plants with application of roholtiella sp. (nostocales) under soilless cultivation
(
MDPI
, 2021 , Article)
Cyanobacteria are found to be renewable and sustainable additives for growth improvement in crops. Extracts and biomass of three nitrogen-fixing cyanobacteria namely, Roholtiella sp. (QUCCCM97), Nostoc ellipsosporum ...