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Now showing items 12266-12285 of 50233
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Heart Valves - صمامات القلب
( جامعة قطر , 2020 , Video) -
Heat Absorbers based on Recycled Polyethylene and Paraffin Wax for Energy Storage
(2016 , Master Thesis)The building sector is one of the main sectors in Qatar; however, it consumes a huge portion of primary energy sources. Today, there is a worldwide trend to utilize renewable sources of energy to cover buildings’ energetic ... -
Heat Adaptation and Nutrition Practices: Athlete and Practitioner Knowledge and Use
( Human Kinetics Publishers Inc. , 2022 , Article)Purpose: To survey elite athletes and practitioners to identify (1) knowledge and application of heat acclimation/acclimatization (HA) interventions, (2) barriers to HA application, and (3) nutritional practices supporting ... -
Heat Budget of the Southeastern Part of the Arabian Gulf
( Qatar University , 2001 , Article)The surface heat fluxes through the air-sea interface for the coastal water of the southeastern part of the Arabian Gulf have been estimated using the bulk formulas. The annual mean values of the sensible, latent and back ... -
Heat duty, heat of absorption, sensible heat and heat of vaporization of 2–Amino–2–Methyl–1–Propanol (AMP), Piperazine (PZ) and Monoethanolamine (MEA) tri–solvent blend for carbon dioxide (CO2) capture
( Elsevier Ltd , 2017 , Article)Chemical absorption using reactive amines for carbon dioxide (CO2) capture is characterized by absorption heat, heat of desorption and heat duty for regeneration (Qreg, kJ/mol CO2). This study experimentally investigated ... -
Heat powered water pump for reverse osmosis desalination
( TechConnect , 2016 , Conference Paper)Current desalination techniques are typically very energy intensive: energy consumption can account for up to 70% of the desalination costs. To improve economics of water desalination plants innovative energy efficient, ... -
Heat Preparation and Knowledge at the World Athletics Race Walking Team Championships Muscat 2022
( Human Kinetics Publishers Inc. , 2023 , Article)Purpose: To assess elite racewalkers’ preparation strategies, knowledge, and general practices for competition in the heat and their health status during the World Athletics Race Walking Teams Championships (WRW) Muscat ... -
Heat recovery in an actual LNG supply chain: Retrofitting of designed heat exchange networks (HENs) for potential fuel saving
( Elsevier B.V. , 2021 , Article)The demand for liquefied natural gas (LNG) is steadily increasing and projected to become an important component of global energy demand. Although LNG processing requires high-energy to convert the gas into liquid, it is ... -
Heat Storage In The Eastern Mediterranean
( Qatar University , 1993 , Article)Results of the monthly climatological fields of heat storage for the Eastern Mediterranean are presented. The zonal annual trend of monthly mean heat storage in the Levantine, Aegean and Ionian Seas are shown as well as ... -
Heat stress impairs proprioception but not running mechanics
( Elsevier Ltd , 2019 , Article)Objectives To determine the effects of heat stress on ankle proprioception and running gait pattern. Design Counterbalanced repeated measures. Methods 12 trained runners performed a proprioception test (active ... -
Heat transfer analysis of regenerative thermo-mechanical refrigeration system
( American Society of Mechanical Engineers (ASME) , 2020 , Conference Paper)Refrigeration systems contribute to the critical environmental concerns including global warming and ozone depletion. It is necessary to develop new systems that use renewable energy resources and waste heat to perform the ... -
Heat Transfer Attributes of Gold–Silver–Blood Hybrid Nanomaterial Flow in an EMHD Peristaltic Channel with Activation Energy
( MDPI , 2022 , Article)The heat enhancement in hybrid nanofluid flow through the peristaltic mechanism has received great attention due to its occurrence in many engineering and biomedical systems, such as flow through canals, the cavity flow ... -
Heat Transfer Characteristics of Fractionalized Hydromagnetic Fluid with Chemical Reaction in Permeable Media
( MDPI , 2022 , Article)This manuscript optimizes the conjugate heat transfer and thermal-stress analysis for hydromagnetic Brinkman fluid with chemical reaction in permeable media. The governing equations of non-Newtonian Brinkman fluid have ... -
Heat transfer enhancement of nanofluids using iron nanoparticles decorated carbon nanotubes
( Elsevier Ltd , 2016 , Article)Enhancing heat transfer in thermal fluid systems can contribute significantly towards the improvement of thermal efficiency resulting in reducing energy consumption and hence carbon emission. Conventional fluids like water ... -
Heat transfer performance of paraffin wax based phase change materials applicable in building industry
( Elsevier Ltd , 2016 , Article)Thermal characterization of phase change materials (PCMs) compose of linear low-density polyethylene (LLDPE), paraffin wax (W) with a melting point of 25 °C, and expanded graphite (EG), that are highly effective in thermal ... -
Heat-stress-induced changes in enzymatic antioxidant activities and biochemical processes in bell pepper (Capsicum annuum L.) seedlings
( Turkiye Klinikleri , 2023 , Article)Heat stress (HS) is expected to become a significant abiotic stressor with the continued rise in global temperatures, severely limiting the development and production of bell pepper (Capsicum annuum L.), especially in arid ... -
Heavy metal ions removal from industrial wastewater using magnetic nanoparticles (MNP)
( Elsevier B.V. , 2020 , Article)A novel iron oxide magnetic nanoparticles (MNPs) grafted on hyperbranched polyglycerol (HPG) polymer were synthesized, characterized and tested for heavy metals (Ni, Cu and AL) removals from secondary effluent industrial ... -
Heavy metal removal from aqueous solution by advanced carbon nanotubes: Critical review of adsorption applications
( Elsevier , 2016 , Article Review)The scarcity of water, especially in arid and semi-arid regions of the world is exerting great pressure on resources and establishing more need to provide good quality water for human and other consumptions. Water ... -
Heavy Metals Concentration Levels in some Fish Species in the Red Sea and Gulf of Aden-Yemen
( Qatar University , 2002 , Article)Level of heavy metals (Zn, Cu, Pb, and Cd) in four species of fish; manly, fish, Crenidens Crenidens, Scomberomorus Commerson, Rastrelliger Kanagurta, Thunnus Albacares were studied in the Red Sea of Yemen and the Gulf of ... -
Heavy metals concentrations in Otolithes ruber and Pampus argenteus location from the Gulf
( Qatar University , 1999 , Article)For dermination of the Concentration of six heavy metals ( Cu, Fe, Mn, Zn, Cd, Pb) in the muscle of Oyuber and Py argenteus. Eighty samples were collected from north Qeshm Island in the Persian gulf. For digestion of samples ...
