Browsing Qatar University Institutional Repository by Title
Now showing items 22465-22484 of 27817
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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 ... -
Unanswered issues on decarbonizing the aviation industry through the development of sustainable aviation fuel from microalgae
( Elsevier , 2023 , Article)Concerns have been raised about the effects of fossil fuel combustion on global warming and climate change. Fuel consumer behavior is also heavily influenced by factors such as fluctuating fuel prices and the need for a ... -
Uncertain training data set conceptual reduction: A machine learning perspective
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)Knowledge discovery from data is a challenging problem that has significant importance in many different fields such as biology, economics and social sciences. Real-world data is incomplete and ambiguous; moreover, its ... -
Uncertainty and contract flexibility in automotive supply chains: A simulation model
( Inderscience Enterprises Ltd. , 2019 , Article)Supply chains are vulnerable to uncertainties in demand and supply. Such uncertainties are often responsible for failure of contracts between buyers and suppliers. Flexible provisions in contracts are likely to reduce the ... -
Uncertainty and Equivalence Relation Analysis for Hesitant Fuzzy-Rough Sets and Their Applications in Classification
( IEEE Computer Society , 2019 , Article)The fusion of hesitant fuzzy set (HFS) and fuzzy-rough set (FRS) is explored and applied into the task of classification due to its capability of conveying hesitant and uncertainty information. In this paper, on the basis ... -
Uncertainty awareness in transmission line fault analysis: A deep learning based approach
( Elsevier Ltd , 2022 , Article)With the expansion of the modern power system, it is of increasing significance to analyze the faults in the transmission lines. As the transmission line is the most exposed element of a power system, it is prone to different ... -
Uncommon presentation of complicated internal hernia through the appendices epiploicae ring of adhesion: a clinical case study
( Frontiers Media , 2024 , Article)Background: Internal hernias are infrequent, yet serious, medical conditions with potentially severe consequences. An internal hernia resulting from an Appendices epiploicae (AE) ring is an especially rare cause, with a ...
