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السجلات المعروضة 391 -- 400 من 422
Surface functionalization of a polyurethane surface via radio-frequency cold plasma treatment using different gases
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MDPI AG
, 2020 , Article)
Herein, the surface treatment of polyurethane (PU) films via air, O2, N2, Ar, and their mixtures were tested. The treatment was performed to incorporate new polar functionalities on the polymer surface and achieve improved ...
Antimicrobial modification of PLA scaffolds with ascorbic and fumaric acids via plasma treatment
(
Elsevier B.V.
, 2020 , Article)
An optimal medical scaffold should be biocompatible and biodegradable and should have adequate mechanical properties and scaffold architecture porosity, a precise three-dimensional shape, and a reasonable manufacturing ...
Dry sliding tribological properties of a hard anodized aa6082 aluminum alloy
(
MDPI AG
, 2020 , Article)
The applications of aluminum and its alloys are still limited by low hardness and low wear resistance properties. Surface modifications, such anodizing and plasma electrolytic oxidation, represent a feasible way to overcome ...
Electrospun Polystyrene/PANI-Ag fibers for organic dye removal and antibacterial application
(
Elsevier Ltd
, 2020 , Article)
Herein we report superior dye-degradation performance for polyaniline-silver (PANI-Ag) nanoparticle coated on polystyrene (PS) electrospun membrane by in situ-polymerization method. Morphological study of the coated membrane ...
Fabrication of flexible electrically conductive polymer-based micropatterns using plasma discharge
(
Elsevier B.V.
, 2020 , Article)
In this work, laboratory prepared PANI and it's composite with carbon nanotubes (PANI/CNTs) were used for the fabrication of micropatterns on flexible polyethylene terephthalate (PET) substrate using the drop cast method ...
Changes in air quality during the first-level response to the COVID-19 pandemic in Shanghai Municipality, China
(
MDPI
, 2020 , Article)
Ongoing rapid urban population growth world-wide has led to serious environmental problems that affect ecosystems and also lower the security and happiness of urban residents about their living environment. The most ...
Methylmercury bioaccumulation among different food chain levels in the EEZ of Qatar (Arabian Gulf)
(
Elsevier
, 2020 , Article)
Methylmercury (MeHg) concentrations in three different species from different trophic levels with different amounts of Hg exposures were determined for the first time in the EEZ of Qatar. Sampling was conducted during ...
The relationship between sleep duration and health status in Qatar’s population
(
Elsevier
, 2020 , Article)
Knowledge of sleep duration correlates is limited to developed countries with a lack of studies in the Eastern Mediterranean Region (EMR). Qatar is a rapidly developing country in the EMR with three distinct population ...
Promoting sustainable businesses for strong local communities: Qatar's wild herbal plants industry
(
Elsevier
, 2020 , Article)
Herbal medicine can improve economic diversification and sustainable livelihoods of local communities. In fact, the demand for herbal medicine is increasing globally while policymakers also value non-economic benefits, ...
Burrowing crabs in arid mangrove forests on the southwestern Arabian Gulf: Ecological and biogeographical considerations
(
Elsevier B.V.
, 2020 , Article)
Many species of mangrove crabs are essential in the formation of mangrove ecosystems, and the bioturbation resulting from the excavation of their underground chambers is directly correlated with substrate oxygenation and ...