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السجلات المعروضة 51 -- 60 من 528
Influence of lean premixed ratio of PCCI-DI engine fueled by diesel/biodiesel blends on combustion, performance, and emission attributes; a comparison study
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Elsevier Ltd
, 2021 , Article)
The traditional combustion mode which utilized in the DI diesel engine has high and excessive emissions so the most wanted combustion is creating new modes which produce low combustion temperatures and low emissions. The ...
Role of shamal and easterly winds on the wave characteristics off Qatar, central Arabian Gulf
(
Elsevier
, 2021 , Article)
Waves in the Arabian Gulf (Gulf) are dominated by shamal winds during winter and early summer. Although wave characteristics in the Gulf are broadly studied, features associated with various wind systems are not explicitly ...
Investigation of Fe-Doped Graphitic Carbon Nitride-Silver Tungstate as a Ternary Visible Light Active Photocatalyst
(
Hindawi
, 2021 , Article)
The rapid population growth and economic development have largely contributed to environmental pollution. Various advanced oxidation processes have been used as the most viable solution for the reduction of recalcitrant ...
Cultivating microalgae in desert conditions: Evaluation of the effect of light‐temperature summer conditions on the growth and metabolism of nannochloropsis qu130
(
MDPI
, 2021 , Article)
Temperature and light are two of the most crucial factors for microalgae production. Variations in these factors alter their growth kinetics, macromolecular composition and physiological properties, including cell membrane ...
Tandem osmotic engine based on hydrogel particles with antipolyelectrolyte and polyelectrolyte effect fuelled by both salinity gradient modes
(
MDPI
, 2021 , Article)
In this study, we propose a new approach to attain energy by salinity gradient engines with pistons based on hydrogels possessing polyelectrolyte and antipolyelectrolyte effects in a tandem arrangement, providing energy ...
عوائق النهضة: غلبة البوليتيك
(
البصائر
, 2021 , Article)
في بداية نهضات الأمم، تكون الحاجة ماسّة إلى بذل الجهد، والتضحية، ومضاعفة العمل، وتحسين الأداء، والإيثار، والتعاون، كما تكون الحاجة ماسّة إلى الصدق في القول والعمل؛ وبخاصة فيما يتعلق بتدبير الشأن العام، وقيادة المجتمع، ...
The effect of the Covid-19 on sharing economy activities
(
Elsevier Ltd
, 2021 , Article)
Activities within the sharing economy (SE) are in a precarious situation due to the Covid-19 pandemic. Even though the SE is considered a disruptive phenomenon, especially in the accommodation and transport sectors, the ...
Diesel-fired boiler performance and emissions measurements using a combination of diesel and palm biodiesel
(
Elsevier Ltd
, 2021 , Article)
Biodiesel is widely accepted as a fuel that is similar to diesel with various advantages. Biodiesel's low-temperature flow qualities are one of its characteristics that limits its use. The goal of this study was to see how ...
Numerical simulation analysis towards the effect of charge transport layers electrical properties on cesium based ternary cation perovskite solar cells performance
(
Elsevier
, 2021 , Article)
In the present study, the device modeling of inverted architecture based on ITO/HTL/perovskite absorber/ETL/Ag was performed using a one-dimensional solar cell capacitance simulation (SCAPS-1D) program. Initially, device ...
Recent advancements in the nanomaterial application in concrete and its ecological impact
(
MDPI
, 2021 , Article)
At present, nanotechnology is a significant research area in different countries, owing to its immense ability along with its economic impact. Nanotechnology is the scientific study, development, manufacturing, and processing ...