饮水过量导致痛风症2例报告

现在普遍流传着人体每天要饮八杯水,每杯水300ml;甚至提出每天饮水量要达到2500ml～ 3000ml.这么大的饮水量已经超出了人体每日饮水需求的1200ml[1],还可能超出人体的代谢能力,对健康造成损害.实验表明：过量饮水能刺激增强体内的分解代谢,蛋白质的分解可加速20％,甚至造成氮的负平衡[2].从人体物质代谢的生化特点可知,蛋白质代谢与核酸代谢相伴而行,蛋白质需要量增多则核酸合成增强,蛋白质合成减少则多余的核酸分解.当机体内的蛋白质分解增强出现“氮负平衡”,就可能伴有“核酸负平衡”.因此,饮水过量有可能导致体内核酸分解过多引起痛风症.

A Pilot-scale Demonstration of Reverse Osmosis Unit for Treatment of Coal-bed Methane Co-produced Water and Its Modeling

This study presents the first demonstration project in China for treatment of coal-bed methane(CBM) co-produced water and recycling.The work aims to provide a research and innovation base for solving the pollution problem of CBM extraction water.The reverse osmosis(RO) unit is applied to the treatment of CBM co-produced water.The results indicate that system operation is stable,the removal efficiency of the total dissolved solids(TDS) is as high as 97.98%,and Fe,Mn,and F-are almost completely removed.There is no suspended solids(SS) detected in the treated water.Furthermore,a model for the RO membrane separation process is developed to describe the quantitative relationship between key physical quantities-membrane length,flow velocity,salt concentration,driving pressure and water recovery rate,and the water recovery restriction equation based on mass balance is developed.This model provides a theoretical support for the RO system design and optimization.The TDS in the CBM co-produced water are removed to meet the "drinking water standards" and "groundwater quality standards" of China and can be used as drinking water,irrigation water,and livestock watering.In addition,the cost for treatment of CBM co-produced water is assessed,and the RO technology is an efficient and cost-effective treatment method to remove pollutants.

暴饮危害多

据报道,近日一名英国男子因为口渴饮水太多,患上罕见的水中毒虚脱而死亡。医生警告,即使是在5小时内喝5升水,也足以致命。 香港每年都发现因饮水过度而出现毛病的病例,美国曾统计有逾10万名饮水上瘾的病人。香港曾发现一名16岁少女贪靓,一日喝20升蒸馏水,最后饮水过多“中毒”昏迷入院。 专家解释,这宗狂饮水病例十分罕见。

驱赶夏季疲劳

8月是最热的季节,精神、身体都易疲劳,引发夏季疲劳三 大原因是:食欲不佳导致营养不足;身体能量消耗加大;运动量 安排不当。控制好这三个因素,“苦夏”问题即可解除。请你回 答问句中的a、b、c。