This study assessed the effectiveness of a commercially available local exhaust ventilation (LEV) system for controlling respirable dust and crystalline silica exposures during concrete grinding activities. Surface grinding was conducted at six commercial building construction sites in Seattle, WA, by cement masons. Time-integrated filter samples and direct reading respirable dust concentration...

Mohamed O. Ahmed1,3‡, Nicola J. Williams2, Peter D. Clegg2, Keith E. Baptiste4 and Malcolm Bennett3 1Department of Microbiology and Parasitology, Faculty of Veterinary Medicine, Tripoli university, Tripoli 2Department of Comparative Molecular Medicine, 3Department of Animal and Population Health, 2,3School of Veterinary Science, University of Liverpool, Leahurst, 4Department of Large Animal Sci...

Data on autism are lacking for Libya. We conducted a hospital-based study in the Neurodevelopment Clinic of AI-Khadra Hospital in Tripoli to estimate the prevalence of autistic spectrum disorders in children attending the clinic. All children referred to the clinic between 2005 and 2009 with a diagnosis of speech and language disorders or behavioural difficulties were assessed. There were 38 50...

OBJECTIVES We describe the elaboration and sensitivity analyses of a quantitative job-exposure matrix (SYN-JEM) for respirable crystalline silica (RCS). The aim was to gain insight into the robustness of the SYN-JEM RCS estimates based on critical decisions taken in the elaboration process. METHODS SYN-JEM for RCS exposure consists of three axes (job, region, and year) based on estimates deri...

A collection of 94 Gram-negative bacteria isolates, showing different antimicrobial resistance phenotypes including to the carbapenem classes was investigated. Strains were originated form clinical sources from a single hospital in Tripoli, Libya during 2015 and were identified based on cultural and phenotypic characteristics, and fully characterized by the VITEK automated system. Forty-eight p...

To The Editor: Exposure to electromagnetic radiation (EMR) from mobile phones can cause detrimental effects on cell function, chromosomal aberrations, and tissue injuries [1-6]. The rapid expansion of mobile phones has lead to widespread concern for their safety. We examined the histopathological effects of direct exposure to this EMR from mobile phones in adult male Swiss albino mice. The anim...

Objectives: The aim of the present study was to evaluate the level of Libyan general dental practitioners’ knowledge about the current guidelines of dental trauma management. In addition, association between knowledge of recommended treatment modalities and demographic data of participants was evaluated. Materials and Methods: A two-part questionnaire containing questions on demographic data an...

The purposes of this study were a) to summarize measurements of airborne (respirable) crystalline silica dust exposure levels among U.S. workers, b) to provide an update of the 1990 Stewart and Rice report on airborne silica exposure levels in high-risk industries and occupations with data for the time period 1988-2003, c) to estimate the number of workers potentially exposed to silica in indus...

Objectives It has been known for centuries that crystalline silica induces silicosis. However, there are different entities of crystalline silica. Siliceous earth is a worldwide unique blend of amorphous and cryptocrystalline silica and lamellar kaolinite. This retrospective cohort study is the first that investigated the silicosis risk of siliceous earth. Methods The cohort consists of employe...

Abduelmula R Abduelkarem is Associate Professor of Clinical Pharmacy and Pharmacy Practice, Department of Clinical Pharmacy and Pharmacy Practice, College of Pharmacy and Health Sciences, Ajman University of Science and Technology Network, Ajman, United Arab Emirates; Hawa J El-Shareif is Adult Endocrinologist, Endocrine Department, Tripoli Medical Centre (Tripoli University, Faculty of Medicin...