ISSN:0096-1736    

出版商:OVID    

年代:1984

数据来源: OVID

ISSN:0096-1736    

出版商:OVID    

年代:1984

数据来源: OVID

ISSN:0096-1736    

出版商:OVID    

年代:1984

数据来源: OVID

ISSN:0096-1736    

出版商:OVID    

年代:1984

数据来源: OVID

摘要:

Previous investigators have reported that amount and quality of sleep are reduced in the shiftworker. The finding that night and morning shifts lead to shortened sleeping hours is replicated in this study. Overall sleeping time, however, was not found to be different for workers on different shift schedules or for shiftworkers and nonshiftworkers. The correlation between length and quality of sleep was very low. Length of sleep was not predicted well by factors such as stress at work, noisiness of sleeping room, drinking coffee, and smoking cigarettes, although these and similar predictors were strongly related to quality of sleep. Shiftwork was found to have a consistent effect on quality of sleep, even when other variables were controlled.

ISSN:0096-1736    

出版商:OVID    

年代:1984

数据来源: OVID

摘要:

Severe respiratory tract irritation occurred in at least 74 of 100 boilermakers who were exposed to high levels of vanadium pentoxide fume during oil-to-coal conversion of a utility company power plant in a rural area of western Massachusetts. Many were welders working in confined areas with inadequate ventilation. Most frequent symptoms were productive cough, sore throat, dyspnea on exertion, and chest pain or discomfort. The illness was severe enough to cause 70 workers to consult physicians and most of them to lose time from work (median, five days). Wheezing (in 39%) was the most frequent finding on physical examination. Mild hypoxemia was noted in several workers; most (72%) had normal chest x-ray films. Expiratory flow rate over the middle 50% of the forced vital capacity was the pulmonary function test most remarkably affected (median, 57% of predicted for 24 workers tested). The Occupational Safety and Health Administration documented levels of vanadium pentoxide fume at or above the permissible exposure limit in all eight air samples taken from inside the boiler; it cited the company for inadequate mechanical ventilation and an inadequate respiratory protection program for workers. The report of this outbreak may help prevent future problems by drawing attention of physicians, workers, and managers to the potential pulmonary hazards in power plant conversion.

ISSN:0096-1736    

出版商:OVID    

年代:1984

数据来源: OVID

ISSN:0096-1736    

出版商:OVID    

年代:1984

数据来源: OVID

ISSN:0096-1736    

出版商:OVID    

年代:1984

数据来源: OVID

摘要:

It has been suggested that the nonspecific symptoms of inorganic lead intoxication are related to the effects of the blood lead on thyroid function. A cross-sectional study of the thyroid function status of a stable work force with long-term exposure to inorganic lead was conducted. No statistically significant relationship between blood lead and thyroxine (T4) or an estimate of “free T4” was identified. These results and those of another recent study cast doubt on the existence of any direct, easily identifiable relationship between moderate blood lead level elevations and the usual measurements of thyroid function.

ISSN:0096-1736    

出版商:OVID    

年代:1984

数据来源: OVID

摘要:

Boron oxide has been shown in animals to irritate the respiratory mucosa and conjunctiva. The present study was undertaken to determine whether exposures to boron oxide and its hydration product, boric acid, cause respiratory and eye irritation in humans. One hundred thirteen workers exposed to these materials and 214 unexposed workers were interviewed regarding symptoms. Statistically significant associations were found between eye irritation, dryness of the mouth, nose, or throat, sore throat, and productive cough and mean exposures of 4.1 mg/m3(which probably did not exceed 8.5 mg/m3).

ISSN:0096-1736    

出版商:OVID    

年代:1984

数据来源: OVID