Results 21 to 30 of about 212 (157)
QU, QRCS sign MoU to strengthen research cooperation
, 2018 Qatar University (QU) signed a memorandum of understanding with Qatar Red Crescent Society (QRCS) to promote joint cooperation in social and research ...
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A New Method for Calculating the Transfer Functions in Quasiresonant Converters
Advances in Electrical and Computer Engineering, 2013 A matrix method for deriving the audiosusceptibility and the control to output transfer functions in quasiresonant converters (QRCs) is presented. The method is based on the state-space description of the parent converter and it has the advantage of ...
LASCU, M.
doaj +1 more source
QU hosts collection bus to support QRCS’ Aounak initiative
, 2022 Qatar University (QU) recently hosted a donation collection bus in support of the Qatar Red Crescent Society (QRCS)
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Current investigations at Quenching Research Centre (QRC) [PDF]
, 2022 Quenching Research Centre has been established at the beginning of 2010 by the financial support for excellence of the Ministry of Science, Education and Sport, of the Republic of Croatia. The main investigation and research possibilities and potentials of the QRC are: cooling in liquids, salt bath and high pressure gases.
Liščić, Božidar +3 more
openaire +1 more source
QRCS trains social worker students of Qatar University
, 2019 Qatar Red Crescent Society (QRCS) has trained a group of social worker students of Qatar University (QU), in partial fulfilment of their academic requirements for graduation in the academic year 2019 ...
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Quantified real constraint solving using modal intervals with applications to control [PDF]
, 2006 Les restriccions reals quantificades (QRC) formen un formalisme matemàtic utilitzat per modelar un gran nombre de problemes físics dins els quals intervenen sistemes d'equacions no-lineals sobre variables reals, algunes de les quals podent ésser ...
Herrero i Viñas, Pau
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Conversor Boost Quadrático SR-ZCS-ZVS-QRC PWM [PDF]
Eletrônica de Potência, 2012 Este artigo apresenta um conversor Boost Quadrático associado a uma célula de auxílio à comutação auto-ressonante (SR) com comutação com tensão nula na entrada de condução (ZVS). O conversor proposto possui elevado ganho de tensão, baixas perdas por comutação e interferência eletromagnética (IEM) reduzida, tornando-o apropriado para ser utilizado em ...
Leandro Sousa Vilefort +4 more
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Global and Detailed Calculation of Tube Wall Temperature in a Process Furnace Steam Superheater
Chemie Ingenieur Technik, EarlyView.This study presents a comparison between an iterative global model and multiple approaches to a new non‐iterative model with the purpose of predicting tube wall temperature of a superheater. The results show that the non‐iterative method achieves sufficient accuracy while improving the prediction of local temperature distribution and better ...
Anežka Michálková, Zdeněk Jegla
wiley +1 more source
International Journal of Chemical Kinetics, EarlyView.ABSTRACT Recent experiments by Nunes et al. have demonstrated that unprecedented control of chemical reactions is possible by narrowband infrared vibrational photo‐excitation at low temperatures in inert matrices. The generated higher energy level conformers may then undergo rotamerisation and tautomerisation reactions which provide extremely useful ...
Judith Wurmel, John M. Simmie
wiley +1 more source
International Journal of Chemical Kinetics, EarlyView.ABSTRACT We present chemical kinetic rate constants for the cis to trans isomerisation or rotamerization of monomeric seleno‐, thio‐, and formic acids and that of three of their dimeric species, based on variational transition state theory and multidimensional tunneling calculations in the gas‐phase, from 10 K to 300 K. These provide, firstly, reliable
Judith Wurmel, John M. Simmie
wiley +1 more source