Although acute organophosphate (OP) pesticide poisoning is associated with the risk cardiovascular diseases (CVD), the association between chronic occupational OP pesticide exposure and CVD risk is limited. We investigated serum high-sensitivity C-reactive protein (hs-CRP) levels and QTc intervals in 45 agricultural workers who were chronically exposed to OP pesticides and 45 non-exposed subjects. Serum hs-CRP level was determined by enzyme-linked immunosorbent assay (ELISA) and a level >1.0 mg/l was regarded as CVD risk. The QT interval was measured by routine 12-lead Electrocardiogram (ECG) with Lead II rhythm, and QTc was calculated. The median value of the serum hs-CRP level [1.20 (0.67-2.38) vs 0.74 (0.41-1.17) mg/l, P <0.05] and the mean QTc interval (422.71 ± 23.73 vs 396.27 ± 18.48 ms, P <0.0001) was significantly higher in the OP pesticide exposed subjects. Pesticide exposure was significantly associated with CVD risk (Chi-Square χ 2 = 6.480, P = 0.011) and QTc interval prolongation (χ 2 = 13.846, P <0.001). A higher risk of CVD (odds ratio = 3.030; 95% confidence interval = 1.276 -7.197) was observed in the OP pesticide exposed subjects. This study suggested that OP pesticide exposure should be considered as one of the significant risk factors for CVDs.
The article is devoted to the study of the support and side stop vibration isolation system of two marine power plants DGA-
500 with a 5AL 25/30 drive diesel engine, in which a hypothesis is put forward about the imperfection of the shock absorption system.
The purpose of the research is to substantiate the imperfection of the support and side stop vibration isolation system of marine power
plants with a 5 AL 25/30 drive diesel engine.
The confirmation of this hypothesis and the achievement of this goal is justified on the basis of presentation of the results of field studies
on the project’s courts B437/11 and the personal presence during the preparation of DGA-500 to repair at the shipyard.
For the use of unbalanced engines as a drive for ship power plants, the authors, on the basis of a full-scale experimental study and
analysis of known works, recommend initially assessing the possibility and purpose of depreciation of the unit according to the Katz
unbalance criterion [1].
The objective of fixing the unit with diesel 5AL 25/30 on the criterion of imbalance Katz is soundproof, and the calculation of depreciation
should be based on the impact of side stop vibration isolators.
A significant improvement is recommended to the support 36-40 and side stop 41-52 vibration isolation system, elastic pipe fittings 8,
support frame 2 and turbocharger bracket 4 (Fig. 1).
The article is devoted to the study of the system of support and thrust depreciation of the ship power plant DGA-500 with a 5CHN 25/30 drive diesel engine, in which the hypothesis of its imperfection is put forward. The confirmation of the hypothesis put forward is substantiated on the basis of the presentation of the results of field studies on the ship and the presence during the preparation of the DGA-500 for repair at the shipyard.
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