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In this paper, the photoluminescence of as-prepared porous silicon were investigated. The visible light emission is associated with surface defects states of porous silicon. The hydrogen atoms on porous silicon surface can passivate irradiative centers and lead to the increase of emission intensity, which can be proved by the microwave-detected photoconductivity decay measurements.
There is little knowledge on whether clustering of hyperlipidemia, hyperglycemia, alcohol drinking, overweight and central obesity increases risk of hypertension in Mongolian people of rural and animal husbandry area.A cross sectional study was performed in a Mongolian population. Demographic data, lifestyle factors, family history of hypertension, blood pressure measurements, physical examination...
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