During the last few decades most developing countries have experienced a rapid growth in population which has resulted in a rapid urbanisation in the form of an expansion of existing towns, coupled with an increasing dependence upon developed countries for implementation of new housing programmes. The purpose of this study is to point out the problems of public housing, to identify the relation...

This paper presents the results of several studies looking at the influence of national and international cultures and approaches to pedagogy on the effectiveness of designing, implementing and using e-learning systems and technology in Higher Education institutions. The authors have developed a questionnaire, which was completed by mature Libyan students enrolled for PhD studies in UK who also...

This study investigated the motivation of a heterogeneous group of students studying English as a foreign language at the International School in Tripoli area. The aim of the study was to find out the extent to which various factors affect students’ motivation and achievement in second/foreign language learning particularly as they enter the senior high school. The research also looked into the...

The Syrian conflict has displaced over 1.2 million Syrians into Lebanon. As a result of displacement, some Syrian families are turning to child marriage as a coping mechanism. The prevalence of early marriage has reportedly increased and the average age of marriage decreased during the crisis. The aim of the project was to understand the underlying factors contributing to child marriage among S...

Catalytic emulsion polymerization of ethylene with nickel catalysts in the presence of silica nanoparticles affords stable dispersions of silica/polyethylene nanocomposite particles. The modification of the surface of silica particles by grafting upon their surface of octenylor octylsilanes is a prerequisite for obtaining composites. Different morphologies of composites particles were observed ...

the silica supported platinum nanoparticles was synthesized by using the sol-gel method. the possibility of using diamminedinitro platinum (ii) as pt precursor and effect of metal precursor concentration on the final pt nanoparticle size was investigated. a stable silica sol was prepared via hydrolysis of tetraethyl orthosilicate (teos) as a metal alcoxide and condensation reaction. subsequentl...

Pure silica (SiO, ) exists at room temperature in the four different modifications: quartz, tridymite, cristobalite, and fused silica. The first three are crystalline, but fused silica is a non-crystalline solid, a glass. Tridymite, cristobalite, and fused silica are metastable, but at room temperature they do not invert within measurable time to the only thermodynamically stable modification, ...

Since 1982 standard calibration materials recommended for respirable crystalline silica analysis by the Mine Safety and Health Administration (MSHA) P7 Infrared Method and the National Institute for Occupational Safety and Health (NIOSH) X-ray Diffraction (XRD) Analytical Method 7500 have undergone minor changes in size distribution. However, a critical assumption has been made that the crystal...

Clinical detection of silicosis is currently dependent on radiological and lung function abnormalities, both late manifestations of disease. Markers of prediction and early detection of pneumoconiosis are imperative for the implementation of timely intervention strategies. Understanding the underlying mechanisms of the etiology of coal workers pneumoconiosis (CWP) and silicosis was essential in...

Amorphous silica particles, whose applications are increasing in many biomedical fields, are known to be less toxic than crystalline silica. In this study, the inflammatory effects of amorphous silica nanoparticles were investigated using 30-nm amorphous silica nanoparticles and human peripheral blood mononuclear cells (PBMCs) or purified monocytes. As a result, production of IL-1β and IL-8 wer...