نتایج جستجو برای: 000 and 500 individuals
تعداد نتایج: 16858107 فیلتر نتایج به سال:
Community health practice in vari ous forms has been recorded for over 5 000 years (Anderson, 1969). The ancient Egyptians developed a community system for water supply and sewage disposal. The Hebrews focused on the promotion of health through the Mosaic code which regulated personal hygiene, food, sanitation, maternal health, and more. The Greeks (500-100 BC) emphasised values of personal hy...
doi: 10.3969/j.issn.1002-0829.2012.01.005 Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China. Correspondence: [email protected] The modern history of mental health services in China dates back to the founding of the first psychiatric hospital in Guangzhou by the missionary physician John Kerr in 1898. By the time of liberation in 1949 China’s popul...
Deep-sea and ice-core records show that interglacial periods were overall less “warm” before about 420 000 years ago than after, with relatively higher ice volume and lower greenhouse gases concentration. This is particularly the case for the interglacial Marine Isotope Stage 13 which occurred about 500 000 years ago. However, by contrast, the loess and other proxy records from China suggest an...
Abstract We studied the contribution of coal-fired power plant (CPP) emissions (SO 2 and NO x ) to air pollution levels annual excess mortality by cardiovascular respiratory diseases in Europe, based on fine particulate matter (PM2.5) concentrations computed with a regional atmospheric chemistry-transport model. The health burden European CPP emission-induced PM2.5, estimated Global Exposure Mo...
The performance of a multi-reflection time-of-flight (MR-ToF) mass spectrometer is evaluated under the use four voltage feedback loops to actively regulate its mirror potentials. Different electronic hardware characterized find most useful configuration for parallel regulation all MR-ToF analyzer’s reflecting gain in resolving power low-abundance ion species demonstrated by measuring pairs mole...
MOTIVATION A plethora of sequenced and genotyped disease cohorts is available to the biomedical research community, spread across many portals and represented in various formats. RESULTS We have gathered several large studies, including GERA and GRU, and computed population- and disease-specific genetic variant frequencies. In total, our portal provides fast access to genetic variants observe...
testing plays a vital role in any language teaching program. it allows teachers and stakeholders, including program administrators, parents, admissions officers and prospective employers to be assured that the learners are progressing according to an accepted standard (douglas, 2010). the problems currently facing language testers have both practical and theoretical implications but the first i...
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