Search
Now showing items 51-60 of 313
Nanocomposite Membranes of Silica and Polysulfone for Improved Gas Permeation
(
Elsevier, Ltd
, 2012 , Conference Paper)
Polysulfone-Silica mixed matrix hybrid membranes have been prepared by incorporating silicon dioxide nanoparticles with average particle size of 136 nm. Two types of polysulfone-silica nanocomposite membranes were prepared ...
Amino acids Y229 and F603 are involved in Bacillus thuringiensis Cry1Ac delta-endotoxin stability and toxicity
(
Blackwell Publishing
, 2012 , Article)
Bacillus thuringiensis Cry1Ac toxin shares structurally five conserved blocs with the other δ-endotoxins. To study the role of some amino acids belonging to these regions, two mutations, Y(229) P and F(603) S, were introduced ...
Simulated annealing with auxiliary knowledge for process planning optimization in reconfigurable manufacturing
(
Elsevier
, 2012 , Article)
In this paper, three simulated annealing based algorithms that exploit auxiliary knowledge in different ways are devised and employed to handle a manufacturing process planning problem for reconfigurable manufacturing. ...
How Critical Thinking is Taught in Qatari Independent Schools’ Social Studies Classrooms: Teachers’ Perspectives
(
Macrothink Institute
, 2012 , Article)
Qatar is in the midst of a massive systemic education reform Education For a New Era. A key aspect of the reform is the expectation of teachers to develop students’ critical thinking skills. In this paper, an open-ended ...
مناهج علم أصول الفقه بين التجديد المطلوب والتبديد المرفوض
(
عبد الفتاح محمود ادريس
, 2012 , Article)
يتناول البحث موضوعاً غاية في الأهمية في وقتنا الحاضر، وهو التجديد في مناهج علم أصول الفقه، لأن دعوات خرجت من الشرق والغرب تنادي بالتجديد في الفكر الإسلامي عموماً، وفي مناهج العلوم الشرعية، وعلم أصول الفقه خصوصاً، استناداً ...
Review of existing transportation sustainability initiatives and their applicability to Qatar
(
American Society of Civil Engineers (ASCE)
, 2012 , Conference Paper)
Sustainable development is Qatar's main national goal. The fact that Qatar has secured the World Cup bid for 2022 will make it the first Arab country to host the world cup. This honor and Qatar's plan to advance its ...
Date palm wood flour/glass fibre reinforced hybrid composites of recycled polypropylene: Mechanical and thermal properties
(
Elsevier, Ltd
, 2012 , Article)
Recycled polypropylene (RPP) based hybrid composites of date palm wood flour/glass fibre were prepared by different weight ratios of the two reinforcements. Mixing process was carried out in an extruder and samples were ...
Differentiating the mechanical response of hierarchical magnesium nano-composites as a function of temperature
(
Elsevier, Ltd
, 2012 , Article)
The effect of temperature change on quasi-static mechanical response of monolithic Mg alongside hierarchical Mg/Al–Al2O3 nano-composites synthesized through powder metallurgy route followed by microwave assisted rapid ...
Energy absorption capability of composite hexagonal ring systems
(
Elsevier, Ltd
, 2012 , Article)
An extensive experimental investigation of inplane crushing of composite hexagonal ring system between platens has been carried out. Woven roving glass/epoxy hexagonal ring system with different angles and arrangement were ...
Advancing Service Operations: The Changing Role of Industrial Engineering
(
OMICS International
, 2012 , Article)
Service operations are currently at the hub of economic activities in some parts of the world. Although indicators seem to suggest the existence and future dominance of service economies, such economies will only be ...