【摘 要】
：
目的 了解山东省黄河流域内地方性氟中毒流行现状,为制订防治策略提供科学依据.方法 在山东省选择9个病区县进行了流行病学调查,居民饮用水含氟量测定采用氟离子选择电极法,8
【机 构】
：
山东省地方病防治研究所,山东省地质调查院
论文部分内容阅读
目的 了解山东省黄河流域内地方性氟中毒流行现状,为制订防治策略提供科学依据.方法 在山东省选择9个病区县进行了流行病学调查,居民饮用水含氟量测定采用氟离子选择电极法,8～12儿童氟斑牙诊断采用Dean法.结果 水氟均值≤1.00 mg/L的村占34.41%(606/1761);＞1.00 mg/L的村占65.59%(1155/1761);水氟最大值为11.33 mg/L.水氟均值≤1.00 mg/L的改水降氟工程占72.65%(449/618):＞1.00mg/L的改水降氟工程占27.35%(169/618);水氟最大值为5.85 mg/L.8～12岁儿童氟斑牙总患病率为45.03%(25 579/56 804),氟斑牙指数为0.80.结论 山东省黄河流域内50.00%以上的村庄水氟超过国家标准(≤1.00 mg/L),地方性氟中毒的流行尚未得到有效控制,须尽快落实防治措施.
其他文献
Drought stress is one of the major factors affecting in wheat yield and grain quality. In order to investigate how drought stress might infl uence wheat quality
Expression proifles of ten pathogenesis-related (PR) genes during plant defense against Fusarium, Yellow dwarf virus (YDV) aphid-transmitted and Hessian fly (Hf
The plant mitochondrial genome displays complex features, particularly in terms of cytoplasmic male sterility (CMS). Therefore, research on the cotton mitochond
Reduced early crop growth and limited branching are amongst yield limiting factors of linola. Field response of seed priming treatments viz. 50 mmol L-1 salicyl
Isoprenoids are a functionally and structurally diverse class of natural organic chemicals. The universal precursors of all isoprenoids, isopentenyl diphosphate
RNA silencing is a fundamental plant defence and gene control mechanism in plants that are directed by 20-24 nucleotide (nt) small interfering RNA (siRNA) and m
Brassica campestris male fertility 19 (BcMF19;GenBank accession number GQ902048.1), a gene that is specially expressed in tapetum cells and microspores during a
Copper nanoparticle is a new material widely used in biological medicine, animal husbandry and industrial areas, but its potential toxicity to human health and
1997年的亚洲金融危机显示出个股的流动性受到市场因素的强烈影响,市场微观结构的研究开始更多地关注市场的系统性因素.本文以上海证券交易所全部A股的日交易数据为样本,证实
The objective of this 2-yr field trial, with a central composite rotatable design, was to assess and quantify the effects of separation of nitrogen fertilizer a