共查询到20条相似文献，搜索用时 15 毫秒
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煤矸石为基质的育苗试验 总被引：2，自引：0，他引：2
就煤矸石利用技术提出了一种新途径。试验中通过不同方法处理煤矸石,进行了油菜的育苗试验,统计分析表明经复合脱硫剂和碱液浸泡处理过的煤矸石,出苗率均在80%以上,幼苗根系活力、叶绿素含量、叶面积、光合速率等均大于土壤。结果表明:未经处理的煤矸石不能直接作为无土栽培的基质,而脱硫处理后就能够作为无土栽培基质被利用。 相似文献
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L R Kass 《Science (New York, N.Y.)》1971,173(998):698-702
1) We have no need to abandon either the concept of death as an event or the efforts to set forth reasonable criteria for determining that a man has indeed died. 2) We need to recover both an attitude that is more accepting of death and a greater concern for the human needs of the dying patient. But we should not contaminate these concerns with the interests of relatives, potential transplant recipients, or "society." To do so would be both wrong and dangerous. 3) We should pause to note some of the heavy costs of technological progress in medicine: the dehumanization of the end of life, both for those who die and for those who live on; and the befogging of the minds of intelligent and moral men with respect to the most important human matters. 相似文献
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新遗传资源林芝猪调查 总被引：4，自引：0，他引：4
调查了林芝猪的地理分布、产区自然环境与生态条件 ,按系统内典型群随机抽样方法以正规畜牧学和生化遗传学工艺检测了林芝猪的外貌特征、体尺体重、繁殖性能、胴体性状、肉质、肌肉保鲜特性和编码酶 -蛋白质的19个结构基因座上的基因频率分布 ,根据藏、汉、英文史籍、史料、藏学文献、民间口头记事分析了林芝猪的起源 ;拜询喇嘛教高僧、藏医、本人或亲友曾接受治疗的农牧民 ,记录归纳了林芝猪产品作为藏药材的应用。结果肯定 ,林芝猪具有潜在重大的经济价值和文化价值。 相似文献
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Thrombin-E has been produced in adequate quantity for pharmacological studies. After intravenous infusion in dogs there were no significantchanges in blood pressure, temperature, pulse rate, and respiratory movements. There were drops in platelet and white cell count, and there was an increase in bloodsugar level. Powerful fibrinolytic phenomena wereobserved. 相似文献
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LEVITT LS 《Science (New York, N.Y.)》1953,118(3075):696-697
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