تصفح Academic حسب العنوان
السجلات المعروضة 21967 -- 21986 من 26400
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Ultrasensitive Ti3C2TX MXene/chitosan nanocomposite-based amperometric biosensor for detection of potential prostate cancer marker in urine samples
( MDPI AG , 2020 , Article)Two-dimensional layered nanomaterial Ti3C2TX (a member of the MXene family) was used to immobilise enzyme sarcosine oxidase to fabricate a nanostructured biosensor. The device was applied for detection of sarcosine, a ... -
Ultrasonic and thermal properties of γ-irradiated low-density polyethylene
( John Wiley & Sons, Inc. , 1993 , Article)The ultrasonic pulse-echo technique and differential thermal analysis were utilized to characterize and to monitor the effect of ?-irradiation on the sonic modulus and the heat effect of low-density polyethylene. The sonic ... -
Ultrasonic C-Scan Inspection Of Composite Materials
( Qatar University , 1992 , Article)Ultrasonic technique using an automated C-scan has been established as the primary inspection method for composite materials. In this paper, the principles of ultrasonic inspection, the type of defects that may be generated ... -
Ultrasonic Characterization, Tensile Testing And Thermal Properties Of Y Irradiated Low Density Polyethylene, Fb 5005
( Qatar University , 1997 , Article)Ultrasonic pulse-echo technique, tensile testing and thermal gravimetric analysis have been utilised to characterise and monitor the effect of y irradiation on the physicomechanical properties of low density polyethylene ... -
Ultrasonic Pulse Velocity Versus Strength For Concrete In Qatar
( Qatar University , 1992 , Article)Compressive strength of concrete is widely accepted as a characteristic property indicating and representing its quality. The accuracy of both ultrasonic and mechanical strength is discussed and the advantages of ultrasonic ... -
Ultrasound controlled paclitaxel releasing system—A novel method for improving the availability of coronary artery drug coated balloon
( Wiley , 2020 , Article)Objectives: The aim of this study is to improve local-drug delivery efficiency and tissue absorption using the ultrasound (US)-responsible drug coating based on a newly developed US-controlled paclitaxel release balloon. ... -
Ultrasound diagnosis of infections in pregnancy
( Elsevier , 2021 , Article)Pregnancy is a unique period in which several changes occur in the mother, to ensure that the semiallograft fetus is not rejected. Some of these changes decrease the immunity of the mother to infections. As such, some ... -
Ultrasound Intima-Media Complex (IMC) Segmentation Using Deep Learning Models
( Multidisciplinary Digital Publishing Institute (MDPI) , 2023 , Article)Common carotid intima-media thickness (CIMT) is a common measure of atherosclerosis, often assessed through carotid ultrasound images. However, the use of deep learning methods for medical image analysis, segmentation and ... -
Ultrasound-Based Image Analysis for Predicting Carotid Artery Stenosis Risk: A Comprehensive Review of the Problem, Techniques, Datasets, and Future Directions
( MDPI , 2023 , Article Review)The carotid artery is a major blood vessel that supplies blood to the brain. Plaque buildup in the arteries can lead to cardiovascular diseases such as atherosclerosis, stroke, ruptured arteries, and even death. Both ... -
Ultrastructural localization of acid and alkaline Phosphatases, glucose-6-phosphatase and odium-potassium Atpase enzymes in the neurosecretory and oesophageal Cells of earthworm
( Qatar University , 1994 , Article)In the present study we have localized acid and alkaline phosphatases, glucose-6-phosphatase and sodium-potassium ATPase (Na-K-ATPase) in ultra-thin sections of cerebral neurosecretory cells and oesophageal cells of the ... -
ultrastructural observations on the effect of the insecticide "aldrin" on some neurosecretory cells of the cerebral ganglion of the earthworm aporrectodea caliginosa
( Qatar University , 1994 , Article)The effect of the insecticide "Aldrin" on the neuroglia and neurosecretory cells of the earthworm Aporrectodea caliginosa was studied. The fine changes on the organdies of certain neurosecretory cells was observed by light ... -
Ultrastructural Study Of Type "B" Neurosecretory Cells In The Earthworm Nervous System
( Qatar University , 1991 , Article)Neurosecretory cell types Bi—B5 are widely distributed throughout the cerebral, subesophageal, nerve cord and peripheral ganglia of the oligochaete Aporrectodea caliginosa, Lumbricus terrestris, Eisenia foetida, Octolasion ... -
The ultrastructure of some stages of haemogregarina Tarentannulari infecting the gecko Tarentola annularis
( Qatar University , 1995 , Article)Certain blood and schizogonic stages of Haemogregarina larentannulari - occuring in the vertebrate host Tarenlola annularis - were studied by electron microscopy. Certain crylhrocytic stages, as well as some schizogonic ... -
Umbelliferone inhibits spermatogenic defects and testicular injury in lead-intoxicated rats by suppressing oxidative stress and inflammation, and improving Nrf2/HO-1 signaling
( Dove Medical Press , 2020 , Article)© 2020 Alotaibi et al. Introduction: Lead (Pb) is an environmental toxic metal that threatens human health. Umbelliferone (UMB) is a coumarin with known medicinal and protective properties against cytotoxicity. This study ... -
Umbilical cord hernia associated with complete evagination of the patent omphalomesenteric duct and prolapse of adjacent ileal limbs
( Elsevier , 2021 , Other)[No abstract available] -
An umbrella review of systematic reviews on contributory factors to medication errors in health-care settings
( Taylor and Francis Group , 2022 , Article Review)Introduction: Medication errors are common events that compromise patient safety and are prevalent in all health-care settings. This umbrella review aims to systematically evaluate the evidence on contributory factors to ... -
The UN Convention on the Rights of Persons with Disabilities from a Qatari Human Rights Perspective
(2016 , Presentation)For a long time disability was considered a question of social development, outside the responsibilities of official human rights institutions. Over the last three decades this approach has evolved, and disability is now ... -
The UN Convention on the Rights of Persons with Disabilities (CRPD) and its Impact on Qatar: Transitioning towards Full Implementation
(2016 , Poster)Disability: interaction between long-term physical, mental, intellectual or sensory impairments and various barriers hindering full and effective participation in society (UNCRPD) Aim of CRPD: Promote, protect and ... -
Un document inédit sur la Régence de Tunis au XVIIIe siècle : le mémoire de Guy de Villeneuve
( L'Harmattan, Paris , 2022 , Book)L’édition de ce mémoire rédigé en 1777 par le sieur Guy de Villeneuve montre l’importance des interactions diplomatiques entre les deux rives de la Méditerranée, au cours du XVIIIe siècle. Ce mémoire regorge des détails ... -
Unaligned inductance calculation using flux tube approach for rotor conducting screen-based SRM
( John Wiley and Sons Inc , 2021 , Article)This article investigates the effect of utilising rotor conducting screens within a switched reluctance machine (SRM). Conducting, non-magnetic materials such as aluminium or copper are inserted into the interpole regions ...
