نتایج جستجو برای: crystalline silica

تعداد نتایج: 75815  

2009
E. Tranfield J. C. Rask W. T. Wallace R. Kerschmann D. J. Loftus Lyndon B. Johnson

Introduction: The chemical reactivity of lunar re-golith is one of the most important issues which impacts the human health and biological effects of lunar regolith. The constant micrometeorite bombardment of the lunar surface results in both comminution and shock melting of lunar regolith. In addition, radiation effects are likely to enhance the chemical reactivity of lunar regolith. With resp...

Journal: :Journal of occupational health 2007
Heungnam Kim Yasuo Morimoto Akira Ogami Hiroko Nagatomo Masami Hirohashi Takako Oyabu Yukiko Kawanami Etsushi Kuroda Toshiaki Higashi Isamu Tanaka

Superoxide dismutases (SODs) are antioxidant enzymes that catalyze the dismutation of superoxide into hydrogen peroxide. There are 3 kinds of isozymes: extracellular superoxide dismutase (EC-SOD), manganese-containing superoxide dismutase (Mn-SOD) and copper- and zinc-containing superoxide dismutase (CuZn-SOD). To examine the expression of SOD isozymes in lungs injured by crystalline silica, we...

Journal: :Medical History 1971
A F Woodings

AT THE end of the eleventh century a spate of intellectual activity in all fields, usually known as the Twelfth-Century Renaissance, began in Western Europe. Medical knowledge, consequently, made considerable advances with the rediscovery, mainly from Arabic sources, of Ancient Greek medical texts and with the translation of the works of skilled Arabic doctors who practised according to Greek p...

2013
M. A. Elbagermi H. G. M. Edwards A. I. Alajtal

The present paper deals with the assessment of heavy metals in soil and roadside dust around Misurata City Centre and industrial areas/roads in the period of October 2011-May 2012. The levels of Pb, Fe, Zn, Ni, Cd, Cr, and Cu in settled dust samples collected near small streets, playgrounds, gas stations and main streets in the Misurata Area have been determined by inductively coupled plasma at...

Journal: :Antimicrobial agents and chemotherapy 2012
Allaaeddin El Salabi Pardha Saradhi Borra Mark A Toleman Ørjan Samuelsen Timothy R Walsh

An Achromobacter xylosoxidans strain from the Tripoli central hospital produced a unique metallo-β-lactamase, designated TMB-1, which is related to DIM-1 (62%) and GIM-1 (51%). bla(TMB-1) was embedded in a class 1 integron and located on the chromosome. The TMB-1 β-lactamase has lower k(cat) values than both DIM-1 and GIM-1 with cephalosporins and carbapenems. The K(m) values were more similar ...

2009
A Zorgani O Shawerf K Tawil E El-Turki KS Ghenghesh

Clindamycin has been used successfully to treat pneumonia and soft-tissue infections caused by methicillin-resistant Staphylococcus aureus. However, inducible clindamycin resistance has been described as a cause of treatment failure of such infections. A total of 159 staphylococcal isolates from different clinical specimens from burn patients in Tripoli Burn Center were tested for inducible cli...

2015
Thuraya Kenan Abdussalam Elzawi Maysoun Restoum

This paper presents the conclusions of a study on the impact of ICT on collaborative learning processes in Libyan Higher Education (LHE). The quantitative analysis of the answers to a questionnaire (completed by Libyan full-time lecturers at the universities of Tripoli, Garyounis, Gharian and Ezawia) shows the necessity to design and develop more classroom activities and interactive online appl...

Journal: :Acta stomatologica Croatica 1991
M M Baccush C S Nayak

Seven hundred and twenty school children of primary school grades 5 and 6 in Hadba Sargia area in Tripoli were examined for dental caries. The mean DMFT index for the whole sample of children was 1.58. The DT component comprised 1.34 and MT component 0.21 of DMFT score, which made 42.22% and 13.33% of total children sample, respectively. The amount FT component was 0.03 (1.39%) of all children ...

2006
T. Orphanoudakis H.-C. Leligou E. Kosmatos J. D. Angelopoulos K. Kanonakis G. Prezerakos

T. Orphanoudakis, H.-C. Leligou, E. Kosmatos, J. D. Angelopoulos, K. Kanonakis, G. Prezerakos. 1: University of Peloponnese, Karaiskaki str., 22100, Tripoli, Greece 2: National Technical University of Athens, Heroon Poloytechneiou 9, Zographou Campus, Athens, Greece 3: Technological Education Institute (TEI) of Piraeus, P. Rali & Thivon 250, Aigaleo, Greece [email protected], {nelly, kosmatos, kokan...

Journal: :Journal of occupational and environmental hygiene 2015
Perry Gottesfeld Damian Andrew Jeffrey Dalhoff

Gold miners exposed to crystalline silica are at risk of silicosis, lung cancer, and experience higher incidence rates of pulmonary tuberculosis (TB). Although the hazards associated with mercury exposure in artisanal small-scale gold mining (ASGM) have been well documented, no published data was available on crystalline silica exposures in this population. Air sampling was conducted in the bre...

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