The National Institute for Occupational Safety and Health (NIOSH) in early 1974 began industrial hygiene studies of vinyl chloride exposed workers. Three VC monomer plants, three VC polymerization plants, and seven PVC fabrication plants were surveyed. V polymerization plant workers and workers in one job category in VC monomer plants were exposed to average levels above 1 ppm. The highest aver...

Hexokinase offers considerable promise for the study of phosphoryl transfer, since the three-dimensional structure of this enzyme (from yeast) is available from the work of T. A. Steitz and co-workers (Steitz et al., 1977; Anderson et al., 1978a.b; Bennett & Steitz, 1978; Anderson et al., 1979), there is a considerable body of kinetic and chemical evidence on the catalytic pathway, and a large ...

Abstract Low fertility is set to worsen economic problems in many developed countries, and maternity, paternity, parental leave have emerged as key pro-natal policies. Gender inequity the balance of domestic formal work has been identified a driver low fertility, can potentially equalise this thereby promote fertility. However, literature contends that evidence for effect on mixed. We conduct f...

SUMMARY This paper reviews neuroimaging studies of depressive disorders conducted in Chinese populations since 2000. Both cross-sectional and longitudinal studies using structural and functional imaging techniques have compared different types of depressed individuals, with and without specific genotypes, and the characteristics of depressed individuals before and after treatment with antidepre...

Linguistic errors are pervasive in second language (L2) students’ writing. Depending on their gravity, the errors may cause a minor degree of irritation to the reader or even lead to total communication breakdown. As such, errors have always been a major concern to both students and teachers, and error correction has also assumed a central position in language teaching. Students generally expec...

OBJECTIVES To determine the current prevalence of syphilis in the general population of South Korea and its trend over the past 20 years. METHODS 15,402 adults, who all were aged over 20 (6888 blood donors, 4951 physical examinees, and 3563 pregnant women) were examined from January 1999 to December 2000. All subjects were screened using a VDRL test, and positive results were confirmed by a F...

AIM OF DATABASE Danish Breast Cancer Cooperative Group (DBCG), with an associated database, was introduced as a nationwide multidisciplinary group in 1977 with the ultimate aim to improve the prognosis in breast cancer. Since then, the database has registered women diagnosed with primary invasive nonmetastatic breast cancer. The data reported from the departments to the database included detail...

The 1,4-benzodiazepines have become the most frequently prescribed of all psychotropic drugs since the introduction of the first member of this series, chlordiazepoxide, into clinical practice in 1960. The compounds are used as anxiolytics, sedative/hypnotics, anticonvulsants, and muscle relaxants. This unique spectrum of activity, together with their large therapeutic index and essential lack ...

Introduction Myocardial involvement in polymyositis has been increasingly recognized since it was first reported by Oppenheim (1899). Cardiac manifestations include congestive cardiac failure (Lynch, 1971; Bohan et al., 1977; Denbow et al., 1979), pericarditis (Lynch, 1971), atrioventricular and bundle branch block (Lynch, 1971, Schaumburg, Nielsen and Yurchak, 1971; Henderson et al., 1980) and...