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目的:描述2002年拉萨市成年居民超重和肥胖、高血压的患病情况。方法:利用2002年中国居民营养与健康状况调查西藏调查点的数据分析不同年龄组的超重和肥胖患病率;高血压水平、高血压患病率以及高血压的知晓率、治疗率和控制率情况;血脂异常患病情况。结果:2002年拉萨市成年居民超重率为29.0%,肥胖率为15.9%;高血压患病率为41.0%,高血压的知晓率、治疗率和控制率分别为33.5%、25.9%、5.4%。结论:拉萨市成年居民的慢性病患病率较高,慢性病已成为拉萨居民的一个重要健康问题,应开展行之有效的措施实施干预和治疗。 相似文献
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Amphiphilic ethyl cellulose (EC)-g-poly(acrylic acid) (PAA) copolymers were synthesized by atom transfer radical polymerization (ATRP). Firstly, ethyl cellulose macro-initiators with the degree of the 2-bromoisobutyryl substitution of 0.04 and 0.25 synthesized by the esterification of the hydroxyl groups remained in EC macromolecular chains and the 2-bromoisobutyryl bromides. Secondly, tert-butyl acrylate was polymerized by ATRP with the ethyl cellulose macro-initiator and EC-g-PtBA copolymers were prepared. Finally, the EC-g-PAA copolymers were prepared by hydrolyzing tert-butyl group of the EC-g-PtBA copolymers. The grafting copolymers were characterized by means of GPC, 1H NMR and FTIR spectroscopies. The molecular weight of graft copolymers increased during the polymerization and the polydispersity was low. A kinetic study showed that the polymerization was first-order. Meanwhile, EC-g-PAA copolymers were self-assembled to micelles or particles with diameters of 5 nm and 100 nm in water (pH = 10) when the concentration was 1.0 mg/ml. 相似文献
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随着手持设备的迅猛发展,新疆作为我国面向中西亚国家促进合作、交流的桥头堡,在智能手机等嵌入式产品中支持快速高效的阿拉伯文输入显得尤为重要。讨论如何在Qtopia4中设计和实现阿拉伯文智能学习输入法。详细阐述基于Qtopia4平台的阿拉伯文本地化解决方案、该输入法的词库构建与算法设计。实现单词智能联想和整句输入,具备自我学习功能。最终将该输入法移植到广州友善之臂ARM11开发板Mini6410的Qtopia 4.4.3 Mobile版中。 相似文献
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The self-assembly of the dense graft copolymers ethyl cellulose-graft-polystyrene (EC-g-PS) in acetone was investigated by using dynamic light scattering (DLS), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). It was found that EC-g-PS copolymers can self-assemble into spherical micelles in acetone. The micelles' size increases with increasing the copolymer concentration and the PS side-chain length. Moreover, the copolymers can self-assemble into multimolecular micelles at relatively high polymer concentration while unimolecular micelles can be formed at low concentration. The micelles have a core-shell structure with the ethyl cellulose main chains in the shell and the side polystyrene chains in the core of the micelles. 相似文献
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