نتایج جستجو برای: coal miners
تعداد نتایج: 34103 فیلتر نتایج به سال:
The causative organisms and susceptibility factors were compared in two groups of individuals with tinea pedis, coal miners (234) and dermatological outpatients (244). Trichophyton rubrum was the commonest dermatophyte in both groups, being isolated from 71% of infected miners and 77% of infected outpatients. The incidence of atopy in the outpatients, but not the miners, was significantly highe...
Lassar Dunner (1945a) recorded the clinical and radiological findings in five men who had been exposed to " pure graphite " dust. They had been exposed for 17, 18, 20, 20, and 34 years respectively, and no other dusts were known to have been implicated. Three of the men had cough, sputum, and dyspnoea; the other two had no complaints. Radiographs showed reticulation with nodulation, and the que...
Objectives-To analyse the mortality patterns offormer Dutch coal miners, focusing on coal workers' pneumoconiosis (CWP) and chronic obstructive pulmonary diseases (COPD) in relation to pre-existing impairment oflung function. Methods-3790 selected miners, medically examined between 1952 and 1963, were followed up to the end of 1991 with the municipal population registries and the causes ofdeath...
Experimental and field work on silicosis, while concentrating attention on the danger of exposure to the dust from hard rock, has produced a sense of false security in regard to the coal miner. Mavrogordato (1918) stated: " It may be regarded as established that all forms of dust enter the lungs and that some, such as coal, are relatively harmless, while others, such as flint, are deadly ". Bro...
OBJECTIVES To understand the variations of selenium (Se) concentration relative to changes in occupational exposure to coal dust, taking into account age and changes in smoking habits in miners surveyed twice, in 1990 and 1994. To better understand the relation of Se concentration with glutathione peroxidase activities (GSH-Px) in these miners. METHODS In 1994, blood samples were obtained fro...
researchers suggested that the individual fit test be conducted to estimate the protection effectiveness of workers’ hearing protection device (hpd) while working. practically, it is convenient to conduct single, instead of multiple, fit test measurement. this study examined if a single trial of earplug fit test can represent multiple performances. additionally, it investigated how much noise e...
IRVINE, L. G., SIMSON, F. W., and STRACHAN, A. S. (1930), Proc. Intern. Conf. on Silicosis in Johannesburg, I.L.O. Studies and Reports, Series F. (Industrial Hygiene), No. I3, p. 259. JONES, W. R. (I933), ,. of Hyg., 33, 307. KETTLE, E. H. (I932), Y. Path. and Bat., 35, 395. KETTLE, E. H. (I934), Ibid., 38, 20o. KING, E. J. (I945), M.R.C. Special Report Series, No. 250, p. 73. KING, E. J. (I947...
Abnormal corpus callosum (CC) has been reported in childhood trauma-related posttraumatic stress disorder (PTSD); however, the nature of white matter (WM) integrity alterations in the CC of young adult-onset PTSD patients is unknown. In this study, 14 victims of a coal mine gas explosion with PTSD and 23 matched coal miners without experiencing the coal mine explosion were enrolled. The differe...
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