Zeitschrift fur die gesamte Hygiene und ihre Grenzgebiete最新文献

Various outbreaks of Listeria registered in the USA and Europe after eating cheese were the motive to investigate different cheese sorts of the GDR-production on the occurrence of Listeria species. Out of 100 samples of different cheese brands 11 curdled milk cheeses (11%) showed Listeria innocua, an nonpathogenic Listeria species.

To assess the strain imposed by defined static loads, eleven young males were studied in four different postures at three different loads held. In addition to the usual cardiovascular parameters of heart rate and arterial blood pressure, the long-term variability of the cardiac cycle (sinus arrhythmia) and the subjective exertion assessment according to Borg were used as strain criteria. Despite a high interindividual variability, HR arrhythmia data reflect in very good terms the strain imposed by predominantly central activation at static loads and forced postures. Such a strain assessment does not replace other modes of assessment such as biomechanical model considerations. Still, it may add to an assessment made on the basis of heart rate and blood pressure.

The characteristics of the politics in science of the NS-regime included the desire for a central management of the medical-scientific societies. The paper is devoted to the authorities established for this purpose and their influence in staffing, such as the formation of new structures. The scientific organizations, however, also got freedom and possibilities of influence. A further analysis of these is to be recommended.

Advantages and disadvantages of the estimation of the mass and number fibrous dusts concentrations are discussed. By using the reference phase contrast microscopic method (1) the data of interlaboratory comparative measurements of MMMF (man-made mineral fibres/density/f.mm-2) have been got and are presented. Total mass dust concentrations and number concentrations of MMMF and/or asbestos fibres are compared. The consequent measurements were made in the same time intervals and in the same workplaces. In conclusion both measuring methods are critically evaluated and their results are compared with the prescribed MAC-values. Presented results are of use when deciding what method with respect to the kind of fibrous dust and to the working operation should be chosen.

During 18 years occurred an enormous (fivefold) increase of the country-wide registered frequency of in-patient cases with the diagnosis alcoholism. This development is connected with a decrease of the length of stay. Fife hypotheses to these findings are discussed. The dynamic is different by age, sex and hospital wards. The various length of stay indicates different contents of treatment, from the detoxication with the shortest length of stay (0-3 days) to the narcotherapy (several months) to the long-stay patients (several years).

A high performance liquid chromatography method was employed to detect DDT-type residues in milk samples collected from Ismailia governorate. o,p-DDT and p,p-DDE were the most frequent residues detected. In none of the testet samples the total DDT residues exceeded the maximum residue limit (MRL) for DDT complex.

To study chronic nonspecific respiratory diseases of people working in industrial swine confinement buildings, a cross sectional study was initiated. Based on history of diseases, clinical and parameters of ventilatory screening in 238 swine producers a frequency of chronic respiratory symptoms were found in 25.6%. The possible dependence on age, sex, smoking history, working conditions and duration of activity was investigated. The influence of professional and non professional factors had different intensity. The results of investigations of working conditions did not exceed the permitted maximal working place concentrations. So they could not prove the large frequency of respiratory diseases.