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السجلات المعروضة 4111 -- 4120 من 7093
Using the theory of planned behavior to predict the use of an upcoming public transportation service in Qatar
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Elsevier Ltd
, 2019 , Article)
Public transportation systems play a major role in accommodating public travel needs. To accommodate the need for public transportation in Qatar, a metro network is currently under construction. However, commuters have ...
A new tracking technique for mechanical angle measurement
(
Elsevier
, 2014 , Article)
Resolvers and other types of sine/cosine encoders are used for measurement of mechanical angles. These devices produce quadrature signals in the form of sine and cosine of the unknown angle, and require converters to extract ...
Selective H2S sensor based on CuO nanoparticles embedded in organic membranes
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Elsevier B.V.
, 2016 , Article)
We report on H2S gas sensors based on CuO nanoparticles that are embedded within polymer membranes of poly-vinyl-alcohol (PVA) and glycerol ionic liquid (IL). The nanoparticles were fabricated by the colloid microwave ...
High-pressure CO2/N2 and CO2/CH4 separation using dense polysulfone-supported ionic liquid membranes
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Elsevier B.V.
, 2016 , Article)
Four ionic liquids (ILs) were blended with polysulfone (PSF) to produce functional dense polymer-supported IL membranes (DPSILMs). The main aim was to investigate the applicability of the DPSILMs in industrial gas processing ...
Trait self-control: Why people with a higher approach (avoidance) temperament can experience higher (lower) subjective wellbeing
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Elsevier Ltd
, 2018 , Article)
The present study sought to examine the interrelationships between approach and avoidance temperament, trait self-control, and subjective wellbeing, and to see whether trait self-control could mediate the effect of temperament ...
Study of the effects of dust, relative humidity, and temperature on solar PV performance in Doha: Comparison between monocrystalline and amorphous PVS
(
Taylor & Francis
, 2013 , Article)
The sensitivity of various solar photovoltaic technologies to dust, temperature, and relative humidity is investigated for Doha's environment. Results obtained show that monocrystalline photovoltaics (PVs) have efficiencies ...
A solid-phase extractant based on microemulsion modified date pits for toxic pollutants
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Elsevier
, 2013 , Article)
Application of microemulsion modified raw date pits as an inexpensive solid extractant for removing methylene blue (MB), copper ion (Cu2+) and cadmium ion (Cd2+) has been presented. The results summarised herein are also ...
Adaptive thermal comfort in the different buildings of Darjeeling Hills in eastern India – Effect of difference in elevation
(
Elsevier Ltd
, 2018 , Article)
Thermal comfort standards are required to provide comfortable indoor condition which has a positive effect on the occupant. However, the Predicted Mean Vote – Percentage People Dissatisfied (PMV-PPD) model which is used ...
Seasonal weather conditions affect training program efficiency and physical performance among special forces trainees: A long-term follow-up study
(
Public Library of Science
, 2018 , Article)
The purpose of the present investigation was to follow-up the effect of specific commandos? training-cycles (SCTCs) on upper-body strength resistance and running endurance performance, as well as determine whether variation ...
Principles of time-frequency feature extraction for change detection in non-stationary signals: Applications to newborn EEG abnormality detection
(
Elsevier Ltd
, 2015 , Article)
This paper considers the general problem of detecting change in non-stationary signals using features observed in the time-frequency (t,f) domain, obtained using a class of quadratic time-frequency distributions (QTFDs). ...