排序方式: 共有9条查询结果,搜索用时 15 毫秒
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宁陕自然保护区既是秦岭大熊猫保护区群的东缘地带,又是秦岭大熊猫保护区群向东延伸的纽带,为秦岭大熊猫保护区群最有保护价值的保护区之一.阐述了宁陕自然保护区生物资源状况、建立的重要性及大熊猫的种群状况、社区经济概况和机构设置及管理情况,并提出了保护区存在的问题及具体的保护管理对策. 相似文献
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This study assessed elemental concentrations in the serum of 154 preschool children in central Taiwan via instrumental neutron activation analysis (INAA). A total of eight elements, Br, C1, Fe, Na, Rb, Sc, Se and Zn of sera for Taiwanese preschool children living at four residential areas: Taichung city, Taichung urban townships and in a remote area inhabited by two groups of aborigines, Atayal and Bunun were determined. Standard reference materials (tomato leaves, NIST-SRM 1570a, and lichen, IAEA-336) were used as quality control standards to crosscheck the accuracy. Residential area, socioeconomic status and gender were shown to significantly influence serum levels of the eight trace elements. Statistical analysis revealed several different gender patterns via the two-tailed student's test. A quantified index of agreement (AT) was used to classify these elements. Small AT indicated a close consistency, while large AT indicated a larger fluctuation, or less agreement, such that the correlation between the elements could be interpreted using a series of quantified indices at the serum levels of preschool children. 相似文献
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检测了193例急性脑出血和15例老年性蛛网膜下腔出血患者头发中铬,硒,锰,镁,锌,铜,铁含量,结果表明,出血性中风患者发铬,硒,锰,镁,锌含量均降低,铜升高,铁正常。讨论了该病与微量元素的关系。 相似文献
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制定档案应急处置预案,建立健全有效的应对处置机制和防范于未然的档案防灾管理体系,减少因自然灾害和突发性事故等原因造成档案原件的损失,才能在面对形形色色的突发性事件中转“危”为“机”。 相似文献
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"授人以鱼"是直接把"鱼"(教学结果)给别人."授人以渔"是直接把"怎样捕鱼"(学习方法)教给别人."授人以池"是间接给人养鱼的原始材料,让别人通过"组料养鱼-学会养鱼-收获捕鱼"这个过程实践,从而获得知识和能力.笔者分析三种教学模式,学到一些教学之法. 相似文献
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“授人以鱼”是直接把“鱼”(教学结果)给别人。“授人以渔”是直接把“怎样捕鱼”(学习方法)教给别人。“授人以池”是间接给人养鱼的原始材料,让别人通过“组料养鱼一学会养鱼——收获捕鱼”这个过程实践,从而获得知识和能力。笔者分析三种教学模式,学到一些教学之法。 相似文献
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