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62.810  Articles
1 of 6.281 pages  |  10  records  |  more records»
The object of research is the type of power valves – gate valve or wedge valve. Gate valves or wedge valves take a leading place among power valve. It has minimal hydraulic resistance, an almost linear dependence of the flow rate on the degree of opening,... see more

The object of research is the type of power valves – gate valve or wedge valve. Gate valves or wedge valves take a leading place among power valve. It has minimal hydraulic resistance, an almost linear dependence of the flow rate on the degree of opening,... see more

We examined the possible relationships between pollutant concentrations and mortality at seven different locations of Castilla-León, Spain, and the relationships between such concentration levels and emergency admissions (morbidi... see more

Data on the association between air pollution and risk of ischemic stroke in China are still limited. This study aimed to investigate the association between short-term exposure to ambient air pollution and risk of ischemic strokes in Guangzhou, the most ... see more

Background: Although the effect of temperature on the incidence of acute myocardial infarction (AMI) has been extensively documented, no study has previously investigated the association between temperature and AMI in the Middle Eastern countries.Objectiv... see more

BACKGROUND: Outdoor air pollution has been considered as one of the most serious health concerns over the last decade. This study aimed to investigate the association between ambient air pollution and cardiovascular hospital admissions. METHODS: This inve... see more

By the late eighties the problem of climate change and its possible impacts had become an issue of global concern. Climate variables play an important role in controlling the water circulation and the water quality of lakes either as freshwater reservoirs... see more

The aim of this study is to evaluate the relationship between the risk of hospital admission for respiratory diseases (RD) and the daily weather types during the period 2000-2006. A synoptic climatological approach is used to investigate links between air... see more

Fireworks display during festive celebrations can cause acute short term air pollution. Deepawali –the festival of light– is celebrated in India, every year during October or November with great fireworks display. Concentration of air pollutants such as S... see more

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