نتایج جستجو برای: polymorph crystalline silica
تعداد نتایج: 77663 فیلتر نتایج به سال:
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...
In this paper, we report the results of quality control based in physicochemical characterization and impurities determination of three samples of fluconazole drug substances marketed in Morocco. These samples were supplied by different pharmaceuticals companies. The sample A, as the discovered product, was supplied by Pfizer, while samples B and C (generics), were manufactured by two different...
Lithium 2,2,6,6-tetramethylpiperidide (LiTMP), one of the most important polar organometallic reagents both in its own right and as a key component of ate compositions, has long been known for its classic cyclotetrameric (LiTMP)4 solid-state structure. Made by a new approach through transmetalation of Zn(TMP)2 with tBuLi in n-hexane solution, a crystalline polymorph of LiTMP has been uncovered....
The thermal behavior of two polymorphic forms of rifampicin was studied by DSC and TG/DTG. The thermoanalytical results clearly showed the differences between the two crystalline forms. Polymorph I was the most thermally stable form, the DSC curve showed no fusion for this species and the thermal decomposition process occurred around 245 °C. The DSC curve of polymorph II showed two consecutive ...
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