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السجلات المعروضة 26255 -- 26274 من 50445
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Unpacking the complexity of the PET drink bottles value chain: A chemicals perspective
( Elsevier , 2022 , Article Review)Chemicals can migrate from polyethylene terephthalate (PET) drink bottles to their content and recycling processes may concentrate or introduce new chemicals to the PET value chain. Therefore, even though recycling PET ... -
Unpacking the complexity of the polyethylene food contact articles value chain: A chemicals perspective
( Elsevier , 2023 , Article Review)Polyethylene (PE) is the most widely used type of plastic food packaging, in which chemicals can potentially migrate into packaged foods. The implications of using and recycling PE from a chemical perspective remain ... -
Unpublished coins from Al-Zubarah: Scientific and economic analysis
( Nova Science Publishers, Inc. , 2019 , Book chapter)Qatar Museums Authority (QMA) has kindly permitted the research team to study and publish a number of coins discovered in the old town of Al-Zubarah. The coins are now housed at the 19th century re-built of Al-Zubarah Fort. ... -
Unpublished Material from the Arab Museum of Modern Art at Qatar—Doha I
( American Research Center in Egypt , 2011 , Article)The aim of this article is to shed light on a decorated canopic box with four inscribed canopic jars. The box with its jars are among a corpus of Ancient Egyptian materials housed in the Arab Museum of Modern Art at Doha, ... -
Unpublished Material from the Arab Museum of Modern Art at Qatar—Doha II Osiris Naos
( American Research Center in Egypt , 2010 , Article)Publication of part of a white limestone naos with the representation of the god Osiris dedicated by a military man of the Nineteenth Dynasty, perhaps from the Abydos temple. The paper examines the iconography and text ... -
Unravel the impact of anchoring groups on the photovoltaic performances of diketopyrrolopyrrole sensitizers for dye-sensitized solar cells
( American Chemical Society , 2015 , Article)Two D-?-A dyes, one with a strong electron withdrawing cyanoacrylic acid DPP 20 and one with a weak acceptor carboxylic acid DPP 21 have been synthesized and characterized for their application in dye-sensitized solar ... -
Unraveling Gene Expression Profiles of Cardiac Genes That Participate in Embryonic Development of Congenital Heart Defects Using Chick Embryo
( Qatar University Press , 2020 , Poster)Hypoplastic left heart syndrome (HLHS) is a rare but serious subtype of congenital heart defects (CHDs) at which the hemodynamics are disturbed. In this project, HLHS was introduced surgically by left atrial ligation (LAL) ... -
Unraveling template-free fabrication of carbon nitride nanorods codoped with Pt and Pd for efficient electrochemical and photoelectrochemical carbon monoxide oxidation at room temperature
( Royal Society of Chemistry , 2019 , Article)The tailored synthesis of carbon nitrides (CNs) is of particular interest in multidisciplinary catalytic applications. However, their fabrication in the form of one-dimensional (1D) nanorods for electrocatalytic carbon ... -
Unraveling the Dysbiosis of Vaginal Microbiome to Understand Cervical Cancer Disease Etiology—An Explainable AI Approach
( Multidisciplinary Digital Publishing Institute (MDPI) , 2023 , Article)Microbial Dysbiosis is associated with the etiology and pathogenesis of diseases. The studies on the vaginal microbiome in cervical cancer are essential to discern the cause and effect of the condition. The present study ... -
UNRAVELING THE MICROBIOME DIVERSITY AND DYNAMICS IN DIFFERENT SAMPLE TYPES DURING CORONAVIRUS INFECTIONS
(2024 , Master Thesis)Background: Mucosal immunity and gut microbiome influence respiratory diseases like those caused by coronaviruses (HCoV). This study explores the relationship between HCoV infection and the respiratory and gut microbiome. ... -
Unraveling the Role of Sex Hormones on Keratinocyte Functions in Human Inflammatory Skin Diseases
( MDPI , 2022 , Article Review)The skin exerts several fundamental functions that are the first physical, chemical and immune barriers to the human body. Keratinocytes, the main cell type of the epidermis, provide mechanical defense, support skin integrity ... -
Unravelling and Reconstructing the Nexus of Salinity, Electricity, and Microbial Ecology for Bioelectrochemical Desalination
( American Chemical Society , 2017 , Article)Microbial desalination cells (MDCs) are an emerging concept for simultaneous water/wastewater treatment and energy recovery. The key to developing MDCs is to understand fundamental problems, such as the effects of salinity ... -
Unravelling the integrated information systems and management control paradox: enhancing dynamic capability through business intelligence
( Wiley , 2020 , Article)The purpose of this study is to examine whether the interactive effects of integrated information systems (IIS) and business intelligence (BI)-enabled management control system (MCS) lead to the assimilation of integrated ... -
Unreinforced Masonry Facade Assessment of a Historic Building for Excessive Displacements Due to a Nearby Subway Construction
( American Society of Civil Engineers (ASCE) , 2019 , Article)There have been numerous publications on unreinforced masonry construction in the literature; however, there is a lack of publications on the condition assessment of existing unreinforced masonry facades for disturbances ... -
Unrelated Machines Scheduling With Machine Eligibility Restrictions
( Qatar University , 2002 , Article)In this paper we present a new heuristic algorithm to minimize the makespan for scheduling jobs on unrelated parallel machines with machine eligibility restrictions ( R^ I M .1 C^^). To the best of our knowledge, the ... -
Unruliness through space and time: Reconstructing ‘peoplehood’ in the arab spring
( Taylor and Francis , 2014 , Book chapter)This chapter presents a critical account of the phenomenon of the ‘Arab Spring’. This it does via an unorthodox interpretation of why the Arab Spring élan represents a departure point from many 20th-century revolutions. ... -
Unsteady CFD simulation for high speed centrifugal compressor operating near surge
( American Society of Mechanical Engineers (ASME) , 2014 , Conference Paper)Centrifugal compressor surge and stall are an instabilities flow and system phenomenon, which can lead to a loss of engine power, large pressure transients and, in some cases, failure of the compressor and bearing system. ... -
Unsteady State Process Computations On Spreadsheets
( Qatar University , 1993 , Article)Spreadsheets are becoming increasingly popular, as a useful tool, for making process engineering calculations. This paper shows the use of spreadsheets for computations of an unsteady state process described by ordinary ... -
Unsteady State Two Phase Flow Pressure Drop Calculations
( Qatar University , 1992 , Article)A method is presented to calculate unsteady state two phase flow in a gas-liquid line based on a quasi-steady state approach. A computer program for numerical solution of this method was prepared. Results of calculations ... -
Unsteady-State Interphase Diffusion
( Qatar University , 1993 , Article)This study is concerned with the problem of unsteady interphase diffusion for multicomponent dilute solutions. An integral technique, based on an approximate boundary-layer approach is used. Results are in good agreement ...
