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السجلات المعروضة 12596 -- 12615 من 51234
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Hierarchical Floor Plan For Vlsi Integrated Circuits Based On Analytical Techniques
( Qatar University , 1990 , Article)The physical design of electronic circuits consists of transforming a design specification into a representation to be used in the manufacture of the physical circuits. At Very Large Scale Integration (VLSI) level it becomes ... -
Hierarchical Fusion Using Subsets of Multi-Features for Historical Arabic Manuscript Dating
( MDPI , 2022 , Article)Automatic dating tools for historical documents can greatly assist paleographers and save them time and effort. This paper describes a novel method for estimating the date of historical Arabic documents that employs ... -
Hierarchical honeycomb auxetic metamaterials
( Nature Publishing Group , 2015 , Article)Most conventional materials expand in transverse directions when they are compressed uniaxially resulting in the familiar positive Poisson’s ratio. Here we develop a new class of two dimensional (2D) metamaterials with ... -
Hierarchical Nanostructured MWCNT MnF2 Composites With Stable Electrochemical Properties as Cathode Material for Lithium Ion Batteries
( Wiley-VCH Verlag , 2018 , Article)Multi-walled carbon nanotubes?manganese(II) fluoride (MWCNT?MnF2) composite was prepared by a simple two-step method. In the first step, a wet chemistry reaction between manganese (II) nitrate, Mn(NO3)2, and hexafluoroslicic ... -
Hierarchical ordered macro/mesoporous titania with a highly interconnected porous structure for efficient photocatalysis
( Royal Society of Chemistry , 2016 , Article)In this study, a 3-dimensional interconnected hierarchical ordered macro/mesoporous titania (HOPT) with thin walls, crystalline framework, large cavities (?420 nm), uniform mesopores (3.7 nm) and high surface area (177 m2 ... -
Hierarchical porous carbon by ultrasonic spray pyrolysis yields stable cycling in lithium-sulfur battery
( American Chemical Society , 2014 , Article)Utilizing the unparalleled theoretical capacity of sulfur reaching 1675 mAh/g, lithium-sulfur (Li-S) batteries have been counted as promising enablers of future lithium ion battery (LIB) applications requiring high energy ... -
Hierarchical Porous Carbon Nitride-Crumpled Nanosheet-Embedded Copper Single Atoms: An Efficient Catalyst for Carbon Monoxide Oxidation
( American Chemical Society , 2022 , Article)Rational design of metal single-site embedded porous graphitic carbon nitride (P-g-C3N4) nanostructures exploiting maximum atom utilization is warranted to enhance the thermal CO oxidation (COOx) reaction. Herein, a facile, ... -
Hierarchical security paradigm for iot multiaccess edge computing
( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)The rise in embedded and IoT device usage comes with an increase in LTE usage as well. About 70% of an estimated 18 billion IoT devices will be using cellular LTE networks for efficient connections. This introduces several ... -
Hierarchically Patterned Elastomeric and Thermoplastic Polymer Films through Nanoimprinting and Ultraviolet Light Exposure
( American Chemical Society , 2018 , Article)The surface relief structure of polymer films over large areas can be controlled by combining nanoscale imprinting and microscale ultraviolet-ozone (UVO) radiation, resulting in hierarchical structured surfaces. First, ... -
Hierarchy based information requirements for sustainable operations of buildings in Qatar
( Elsevier , 2017 , Article)Information flows in construction projects are generally focused on the needs of the design and construction phases. This creates disruption of workflows across the project stages and in particular with the information ... -
Hierarchy based information requirements for sustainable operations of buildings in Qatar
( Elsevier Ltd , 2017 , Article)Information flows in construction projects are generally focused on the needs of the design and construction phases. This creates disruption of workflows across the project stages and in particular with the information ... -
The hierarchy of authority based on kinship, age, and gender in the extended family in the Arab gulf states
( William S. Hein & Co., Inc , 2013 , Article)Almost all aspects of life in the Arab Gulf States, including family, have been touched by rapid, unstoppable social change. Nevertheless, certain aspects of the family remain intact. That is, although the nuclear family ... -
High and Ultra-high Performance Concretes: A Solution to Reinforced Concrete Durability under Harsh Climate of Arabian Gulf
( Qatar Univesrity Press , 2020 , Conference Paper)Reinforced concrete (RC) infrastructure in the Arabian Gulf region deteriorates under severe environmental conditions after only short service life. To overcome this problem, it is imperative to employ high-quality concretes ... -
High Brightness and High Voltage Dimmable LED Driver for Advanced Lighting System
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Article)In energy efficient system designs, LED lighting leads to reduction in global energy demand. This paper proposes a high brightness, high efficiency, dimmable LED driver based on linear current regulator technology for DC ... -
High capacity carbon dioxide adsorption by inexpensive covalent organic polymers
( Royal Society of Chemistry , 2012 , Article)Efficient CO2 scrubbing without a significant energy penalty remains an outstanding challenge for the fossil fuel-burning industry where aqueous amine solutions are still widely used. Porous materials have long been evaluated ... -
High Chili Intake and Cognitive Function among 4582 Adults: An Open Cohort Study over 15 Years.
( MDPI , 2019 , Article)We aimed to examine the association between chili intake and cognitive function in Chinese adults. This is a longitudinal study of 4852 adults (age 63.4 ± 7.7) attending the China Health and Nutrition Survey during 1991 ... -
High Consumption of Soft Drinks Is Associated with an Increased Risk of Fracture: A 7-Year Follow-Up Study
( MDPI , 2020 , Article)(1) Background: Fracture causes a substantial burden to society globally. Some studies have found that soft drinks consumption was associated with the risk of fractures. We aimed to assess the association in the Chinese ... -
High Dispersion of Platinum Nanoparticles over Functionalized Zirconia for Effective Transformation of Levulinic Acid to Alkyl Levulinate Biofuel Additives in the Vapor Phase
( MDPI , 2022 , Article)In recent years, functionalized metal oxides have been gaining popularity for biomass conversion to fuels and chemicals due to the global energy crisis. This study reports a novel catalyst based on noble metal immobilization ... -
High electrocatalytic performance of CuCoNi@CNTs modified glassy carbon electrode towards methanol oxidation in alkaline medium
( MDPI AG , 2017 , Article)A novel non-precious multiwalled carbon nanotubes (CNTs)-supported metal oxide electrocatalyst was developed for methanol electrooxidation in alkaline medium. The catalyst was fabricated by simultaneous electrodeposition ...
