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Now showing items 6021-6030 of 6125
Microstructure and mechanical behavior of hot extruded aluminum/tin-bismuth composites produced by powder metallurgy
(
MDPI AG
, 2020 , Article)
In this study, Al-BiSn composites were synthesized by a combination of microwave sintering and hot extrusion processes. The structural, morphological, mechanical, and thermal properties were investigated to elucidate the ...
Magnetorheological elastomer-based variable stiffness flexible coupling for vibration isolation
(
Canadian Science Publishing
, 2021 , Article)
Rotating mechanical equipment such as pumps and motors can suffer from unattenuated torsional vibration. The causes of such vibration range from imbalance within the rotating system to misalignment, or even operating at ...
Mental health during COVID-19 in Qatar
(
BMJ Publishing Group
, 2020 , Other)
The COVID-19 pandemic has posed unprecedented health and social challenges. WHO has been working to promote the integration of mental health and psychosocial support into the COVID-19 response effort.1 It is vital that ...
Electrodeposition of Duplex Ni–B–Zn/Co Composite Coatings
(2020 , Article)
This research article focusses on the Ni–B–Zn/Co composite coatings synthesized via an electrodeposition process. Electrodeposited Ni–B composite coatings have several advantages, such as excellent corrosion as well as ...
WEALTH AND THE PERSISTENCE OF AUTHORITARIANISM IN THE GULF STATES: ECONOMIC PRIVILEGE OR A CULTURAL PHENOMENON?
(
Foundation for Good Politics
, 2021 , Article)
During the Arab Spring the idea of the Middle East as an authoritarian exception appeared to be no longer valid. Yet the Gulf states seem to be safe from political turmoil. This paper examines the persistence of authoritarianism ...
Highly crystalline and thermally stable poly(aniline-co-2-nitroaniline)
(
Springer Nature
, 2020 , Article)
Abstract: To synthesize a crystalline polymer is unconventional. Here, we found the well-defined hexagonal or rectangular cubical shape of poly(aniline-co-2-nitroaniline)s PA-co-2-NAs through scanning electron microscopy. ...
A mixed-method study of programme management resources and social enterprise sustainability: A developing-country context
(
Multidisciplinary Digital Publishing Institute (MDPI)
, 2021 , Article)
This research investigates the relationship between enterprise environmental factors (EEFs) and programme management (PgM) resources, and subsequently how PgM resources and sustain-ability integrate into social enterprise. ...
Biomolecular alterations in acute traumatic brain injury (TBI) using Fourier transform infrared (FTIR) imaging spectroscopy
(
Elsevier
, 2021 , Article)
Acute injury is one of the substantial stage post-traumatic brain injury (TBI) occurring at the moment of impact. Decreased metabolism, unregulated cerebral blood flow and direct tissue damage are triggered by acute injury. ...
Burnout and job satisfaction among psychiatrists in the Mental Health Service, Hamad Medical Corporation, Qatar
(
Elsevier
, 2021 , Article)
Background: Job satisfaction is a critical concern among medical staff and directly affects patient safety and quality of health care services. Burnout has been reported to be correlated with job satisfaction. Aims: This ...
A novel solar integrated distillation and cooling system – Design and analysis
(
Elsevier
, 2020 , Article)
To meet the high cooling and fresh water demands in hot and arid regions, a novel integrated solar cooling and solar distillation system is introduced. The system consists of a solar ejector cooling system integrated with ...