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Study on arsenic level in public water supply of Delhi using hydride generator accessory coupled with atomic absorption spectrophotometer 总被引：1，自引：0，他引：1
Sanjeev Lalwani T. D. Dogra D. N. Bhardwaj R. K. Sharma O. P. Murty 《Indian journal of clinical biochemistry : IJCB》2006,21(1):70-76
Exposure to arsenic has been associated with several health hazards. Worldwide the main reason for chronic human intoxication
with arsenic is intake of contaminated drinking water. Air acetylene type of atomic absorption spectrophotometer in combination
with hydride generator accessory was used to analyze arsenic level in 25 water samples collected from 25 booster pumping stations
and 313 water samples collected from tap water supply of 62 areas of Delhi. Results were analyzed using SPSS and Barlett’s
Chi Square Test. Mean arsenic level detected in water samples collected from booster pumping stations was 0.00976 ppm (Range
0.000–0.017 ppm, Standard Deviation 0.006 and Standard error of Mean 0.00118). Maximum arsenic level (0.017 ppm) was found
in water samples of booster pumping stations of Mehrauli, Punjabi Bagh and Ramjas Road. Mean arsenic level detected in samples
collected from tap water supply was 0.013 ppm (Range 0–0.0430 ppm, Standard Deviation 0.00911 and Standard error of Mean 0.000515).
In water samples of 42 areas arsenic level detected was exceeding WHO/EPA permissible limit of 0.01 ppm (10 ppb). The mean
arsenic level detected in water samples of booster pumping station was within WHO/EPA permissible limit while mean arsenic
level detected in tap water samples was marginally higher. Mixing of ground water and contamination through broken or leaking
channel could be the possible reason of higher arsenic level in tap water. Continuous monitoring of quality of drinking water
is required particularly in view of water contamination caused by industrial waste and uncontrolled ground water extraction. 相似文献
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世界卫生组织有各种类型的出版物,其内容涉及：当前医疗卫生行业急需解决的问题;有关预防保健方法、标准;现代医学最新成果;卫生防疫及免疫等诸多方面,应重视对ＷＨＯ出版物的开发利用。 相似文献
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Jing Cheng Dan Tong Qiang Zhang Yang Liu Yu Lei Gang Yan Liu Yan Sha Yu Ryna Yiyun Cui Leon Clarke Guannan Geng Bo Zheng Xiaoye Zhang Steven J Davis Kebin He 《国家科学评论(英文版)》2021,8(12)
Clean air policies in China have substantially reduced particulate matter (PM2.5) air pollution in recent years, primarily by curbing end-of-pipe emissions. However, reaching the level of the World Health Organization (WHO) guidelines may instead depend upon the air quality co-benefits of ambitious climate action. Here, we assess pathways of Chinese PM2.5 air quality from 2015 to 2060 under a combination of scenarios that link global and Chinese climate mitigation pathways (i.e. global 2°C- and 1.5°C-pathways, National Determined Contributions (NDC) pledges and carbon neutrality goals) to local clean air policies. We find that China can achieve both its near-term climate goals (peak emissions) and PM2.5 air quality annual standard (35 μg/m3) by 2030 by fulfilling its NDC pledges and continuing air pollution control policies. However, the benefits of end-of-pipe control reductions are mostly exhausted by 2030, and reducing PM2.5 exposure of the majority of the Chinese population to below 10 μg/m3 by 2060 will likely require more ambitious climate mitigation efforts such as China''s carbon neutrality goals and global 1.5°C-pathways. Our results thus highlight that China''s carbon neutrality goals will play a critical role in reducing air pollution exposure to the level of the WHO guidelines and protecting public health. 相似文献
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介绍了WPRIM （WHO西太平洋地区医学索引）的主要发展历程以及在期刊遴选、检索服务平台建设和数据采集等方面所取得的进展。用户日志分析表明,WPRIM已经初步具备了一定的国际影响力,但还不是一个相对成熟的区域性国际医学索引,并从宣传和推广、项目发展资金、期刊评审和数据采集方面提出了建议。 相似文献
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This study evaluates the effects of a behaviour change intervention, which encourages the integration of physical activity into the teaching of academic lessons, on physical activity levels of students. The main outcome is mean minutes of moderate-to-vigorous physical activity (MVPA) daily generated during the intervention lessons. Teacher's perceptions and students' enjoyment of the programme were also evaluated. Students accumulated a mean of 8 min MVPA during the intervention lessons daily. The teacher and students were very satisfied with the programme. Therefore, changing teacher behaviour towards using physically active teaching methods is a promising way of increasing children's physical activity levels. 相似文献
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对《世卫组织饮食、身体活动与健康全球战略：国家监测和评价实施情况的框架》中,关于身体活动规划指标的选择标准、指标类型和不同类型指标的功能和范围等进行梳理,结合我国全民健身计划中所用指标类型,通过分类和比较分析,研究发现世卫组织将身体活动的指标分为过程、产出和结果3大类及核心和扩展指标两个亚型,分别用于不同目的的健身活动监测,强调在政府和其他组织机构使用过程和产出指标,注重身体活动的实施过程;提出我国全民健身活动规划中,不同部门和环节等的整体框架结构、政府和非政府组织等部门和机构所采用的指标类型及重点等建议。 相似文献
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This study explores indicators describing socio-demographics, sports participation characteristics and motives which are associated with variation in sports participation across seasons. Data were drawn from the German Socio-Economic Panel which contains detailed information on the sports behaviour of adults in Germany. Overall, two different measures of seasonal variation are developed and used as dependent variables in our regression models. The first variable measures the coefficient of (seasonal) variation in sport-related energy expenditure per week. The second variable measures whether activity drops below the threshold as defined by the World Health Organization (WHO). Results suggest that the organisational setting, the intensity and number of sports practised, and the motive for participation are strongly correlated with the variation measures used. For example, both, participation in a sports club and a commercial facility, are associated with reduced seasonal variation and a significantly higher probability of participating at a volume above the WHO threshold across all seasons. These findings give some impetus for policymaking and the planning of sports programmes as well as future research directions. 相似文献
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王建智 《武汉体育学院学报》2004,38(5):30-32
世界卫生组织是一个有广泛影响的全球性国际组织,它的国际大众体育政策,对推进世界各国群众体育的发展起到了重要的作用,它通过参与沟通世界各国的奥委会、政府部门及地区性组织,为实现世界各国公众的健康目标作出了巨大贡献。 相似文献
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Increasing evidence indicates that face-to-face (offline) youth violence and online harassment are closely interlinked, but evidence from Asian countries remains limited. This study was conducted to quantitatively assess the associations between offline violence and online harassment among youth in Central Thailand. Students and out-of-school youth (n = 1,234, age: 15–24 years) residing, studying, and/or working in a district in Central Thailand were surveyed. Participants were asked about their involvement in online harassment and in verbal, physical, sexual, and domestic types of offline violence, as perpetrators, victims, and witnesses within a 1-year period. Multivariable logistic regression was used to assess independent associations between different kinds of involvement in offline violence and online harassment. Perpetration and victimization within the past year were both reported by roughly half of the youth both online and offline. Over three quarters had witnessed violence or harassment. Perpetrating online harassment was independently associated with being a victim online (adjusted odds ratio [AOR] = 10.1; 95% CI [7.5, 13.6]), and perpetrating offline violence was independently associated with being a victim offline (AOR = 11.1; 95% CI [8.1, 15.0]). Perpetrating online harassment was independently associated with perpetrating offline violence (AOR = 2.7; 95% CI [1.9, 3.8]), and being a victim online was likewise independently associated with being a victim offline (AOR = 2.6; 95% CI [1.9, 3.6]). Online harassment and offline violence are interlinked among Thai youth, as in other countries studied so far. Interventions to reduce either might best address both together. 相似文献
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