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السجلات المعروضة 1594 -- 1613 من 48886
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Acoustic partial discharge signal denoising using power spectral subtraction
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Measuring partial discharge (PD) phenomena in power transformers is often conducted by acoustic emission (AE) method. However, many interference sources are usually encountered with the captured PD signals which negatively ... -
Acoustic Performance Evaluation of Dense-Graded Asphalt Pavements in Qatar
( Hindawi , 2021 , Article)There is pressing and growing demand from the public to design and construct roads with a low noise level. This paper investigated the acoustic performance of asphalt pavements in the State of Qatar to assist transport ... -
An Acoustic Study Of Fricative-To-Vowel Coarticulation In Arabic
( Qatar University , 1992 , Article)This study examines th carryover coarticulatory effecrs of consonantal context upon the acoustic characteristics of voqwia in Arabic. Five speaders read a list of 65 ev.c syllables containing various initial fricatives, ... -
ACPN: A novel authentication framework with conditional privacy-preservation and non-repudiation for VANETs
( IEEE Computer Society , 2015 , Article)In Vehicular Ad hoc NETworks (VANETs), authentication is a crucial security service for both inter-vehicle and vehicle-roadside communications. On the other hand, vehicles have to be protected from the misuse of their ... -
The acquisition of five English Sentential Structures by Native Speakers of Arabic
( Qatar University , 1989 , Article)This cross-dimensional, exploratory study attempts at investigating the acquisition order of five sentential structures by native speakers of Arabic. A natural elicitation technique, in the form of a test written in English, ... -
Acquisition of invasiveness by breast adenocarcinoma cells engages established hallmarks and novel regulatory mechanisms
( International Institute of Anticancer Research , 2019 , Article)Background/Aim: Proteomics of invasiveness opens a window on the complexity of the metastasis-engaged mechanisms. The extend and types of this complexity require elucidation. Materials and Methods: Proteomics, immuno ... -
Acrylic acid plasma treatment of polypropylene nonwoven fabric [Włókniny polipropylenowe poddane obróbce plazmowej z zastosowaniem kwasu akrylowego]
( Institute of Biopolymers and Chemical Fibres , 2016 , Article)Nowadays hydrogel materials are being used in medical practice for wound dressing purposes. Hydrogel/textile composites can be formed to increase the mechanical strength and handling capability of hydrogel materials. ... -
Acrylonitrile process enhancement through waste minimization: Effect of reaction conditions and degree of backmixing
( MDPI AG , 2021 , Article)Waste minimization in reactor design is an effective approach for pollution control, when compared to the traditional practice of the end-of-pipe treatment. Reactor degree of backmixing and operating conditions are important ... -
Action recognition in poor-quality spectator crowd videos using head distribution-based person segmentation
( Springer Verlag , 2019 , Article)Despite a big volume of research on action recognition, little attention has been given to individual action recognition in poor-quality spectator crowd scenes. It is an important scenario, because most of the surveillance ... -
Action Recognition in Spectator Crowds
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)Action Recognition in Spectator Crowds During the Football Association competitions held in 2013 in UK, 2,273 people were arrested due to the events of lawlessness and disorder, according to the statistics collected by ... -
Activated carbon-doped polystyrene fibers for direct contact membrane desalination
( Springer Nature , 2020 , Article)Membranes for direct contact membrane distillation were produced from electrospun polystyrene microfibers doped with activated carbon. The addition of activated carbon reduced the hydrophobicity of the fibers. Therefore, ... -
Activation and Contraction of Human “Vascular” Smooth Muscle Cells Grown From Circulating Blood Progenitors
( Frontiers Media , 2021 , Article)Blood outgrowth smooth muscle cells (BO-SMCs) offer the means to study vascular cells without the requirement for surgery providing opportunities for drug discovery, tissue engineering, and personalized medicine. However, ... -
Activation and stabilization of gallium arsenide anode in an aqueous photoelectrochemical cell
( Elsevier B.V. , 2003 , Article)The formation of a porous layer on the surface of gallium arsenide anode, n-GaAs, increases photogenerated currents significantly. This layer was formed as a result of an anodic polarization of illuminated n-GaAs in acidified ... -
Activation and stabilization of gallium arsenide anode in an aqueous photoelectrochemical cell
( Elsevier , 2003 , Article)The formation of a porous layer on the surface of gallium arsenide anode, n-GaAs, increases photogenerated currents significantly. This layer was formed as a result of an anodic polarization of illuminated n-GaAs in acidified ... -
Activation Dynamics and Immunoglobulin Evolution of Pre-existing and Newly Generated Human Memory B cell Responses to Influenza Hemagglutinin.
( Elsevier , 2019 , Article)Vaccine-induced memory B cell responses to evolving viruses like influenza A involve activation of pre-existing immunity and generation of new responses. To define the contribution of these two types of responses, we ... -
Activation of K7 channels with the anticonvulsant retigabine alleviates neuropathic pain behaviour in the streptozotocin rat model of diabetic neuropathy.
( Taylor & Francis (Routledge) , 2019 , Article)Diabetic peripheral neuropathy (DPN) is the most incapacitating complication of diabetes mellitus. Up to 50% of patients with DPN develop peripheral neuropathic pain (PNP). The underlying ionic and molecular mechanisms of ... -
Activation of kaolin with minimum solvent consumption by microwave heating
( Mineralogical Society , 2014 , Article)A kaolin clay was activated with 1.0 M H2SO4 solution at minimum liquid to solid ratio (L/S) using microwave heating. The optimum experimental conditions for activation were L/S ratio 3.0 mL 1 M H2SO4 per gram kaolin, ... -
Activation of pruritogenic TGR5, MRGPRA3, and MRGPRC11 on colon-innervating afferents induces visceral hypersensitivity
( American Society for Clinical Investigation , 2019 , Article)Itch induces scratching that removes irritants from the skin, whereas pain initiates withdrawal or avoidance of tissue damage. While pain arises from both the skin and viscera, we investigated whether pruritogenic irritant ... -
Activation of the pro-oxidant PKC?IIp66Shc Signaling pathway contributes to pericyte dysfunction in skeletal muscles of patients with diabetes with critical limb Ischemia
( American Diabetes Association Inc. , 2016 , Article)Critical limb ischemia (CLI), foot ulcers, former amputation, and impaired regeneration are independent risk factors for limb amputation in subjects with diabetes. The present work investigates whether and by which mechanism ... -
Activation of the Pro-Oxidant PKCβII-p66Shc Signaling Pathway Contributes to Pericyte Dysfunction in Skeletal Muscles of Diabetic Patients with Critical Limb Ischemia
( American Diabetes Association , 2016 , Article)Critical limb ischemia (CLI), foot ulcers, former amputation and impaired regeneration are independent risk factors for limb amputation in diabetic subjects. The present work investigates whether and by which mechanism ...
