Zeitschrift fur die gesamte Hygiene und ihre Grenzgebiete最新文献

Toxic gases caused by the use of large Diesel-driven devices in underground mines may lead to impairment of health, especially in the respiratory system. By means of occupational hygiene supervision it may be checked if the effectiveness of accomplished occupational hygiene measures are sufficient. By an enlarged examination programme of the respiratory function and laboratory diagnostic investigation miners exposed to Diesel-exhaust-gas were compared within the above mentioned supervision with a non-exposed population. In this study was not found any difference between the respiratory results attributed to influence of Diesel-exhaust-gas. Among the laboratory parameters the exposition to Diesel-exhaust-gas will only affect the mercapturic acid, however, which also may be influenced by other factors. Under the conditions of the measured low degree of exposition was not found any correlation between the level of mercapturic acids and the duration of exposure as well as to the actual degree of exhaust-gas exposition.

The aim of these investigations was to study relations between the serotype of E. coli strains and the pattern of their outer membrane proteins ("OMP") in sodium dodecylsulfate polyacrylamide gel electrophoresis. Three groups of strains being well characterized at least serologically (01, 02, 018ac containing different K, H, and in part F antigens) were submitted to this analysis. In all cases a nearly complete paralellity between OMP pattern and O:K:H(F:) type was observed, provided that the strains were epidemiologically related. The possibility is discussed that the OMP type could be used as a guide marker for the complex typing of E. coli strains.

Non-specific immunological parameters were analysed in dependence of cigarette smoking. Although the serum protein levels were in the normal range, it was remarkable to find some differences between non-smokers, ex-smokers and (heavy) smokers. These differences are especially distinct in the mean levels of IgE, alpha 1 PI and ceruloplasmin.

Results are given for the experimental control of Pharaoh ants, Monomorium pharaonis L., with persistent borax baits in the laboratory and the field. DYBH-bait formulations with about 17 per cent borax are very attractive and have a good effectivity. In 5 different objects infested with this ant eradication was proved to be possible with this experimental formulations. The progress of eradication depends essentially on the good organisational preparation of control measures.

Because of the lead in street dirt and in varnishes of cars it is possible that welders in carriagebody repairs get an unnormal lead exposure. We studied the results of measurements of welddust and their lead concentrations in connection with biological monitoring for lead exposure of the welders. Seperately high lead concentrations in the air of the working zone were obtained indicated through blood lead levels higher than normal value. However the parameter for lead effect erythrocyte protoporphyrin kept normal.

Today Monomorium pharaonis still represents a threat of the hygiene regime in the objects of Public Health and Welfare, particularly for the asepsis and the "Black-White-Separation". The experiences collected throughout a successful rub out by the preparate "Lafarex N 87" in a health-resort are presented. The necessity of cooperation of all concerned persons (owners, pest control enterprises and Public Hygiene Service) are emphasized.

A review is given on the results of a study investigating the state of health and the psycho-social situation of 211 patients who underwent follow-up for malign neoplasm in the oncological Health Center of Magdeburg. In the course of a conversation the patients were questioned about social and other factors specific for their disease. For evaluating the psychic situation the questionnaire of Höck and Hess was used. The results of the study allowed to conclude that more than 50% of the patients showed psychoreactive disorders. Depending from age and sex as well as the diagnosis marked differences concerning the frequences of psychic peculiarities and the evaluation of the state of health were revealed. The results demonstrate that in addition to specific oncological knowledge the consideration of social and psychic factors is necessary for an optimum follow-up in order to recognize and prevent disorders in this field.

Wide bore capillary columns (0.4-0.75 mm ID) can be easily and inexpensively installed in packed column GCs. The analytical advantages cause an expanding market for such capillaries and interconverting hardware kits. It is illustrated with some examples that often individual exposition levels can be determined exactly only by using capillary columns: ethylbenzene may be separated from the C8-isomers also in complex mixtures, the marker PBN for rubber smoke expositions can be determined with 30 min sampling time, the detection sensitivity of the FID is sufficient also for chlorinated pesticides and the analyses of high-boiling compounds profit by the high phase ratio of wide bore capillary columns. A single capillary column substitutes a variety of different packed columns, so saving time and money and protecting the analyst from failures and frustrating compromises.