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本文根据植物引种栽培工作的特点与经验,提出了一个多层次结构综合评判的模糊数学模型。以油橄榄为例,运用该模型计算结果作出了湖北省油橄榄宜林地区划图。对于不同植物,只需要修改其中评判因素及权重分配值进行计算。我们认为,模糊数学的综合评判方法为植物引种栽培区域的选择提供了一种有效的工具。  相似文献   

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The degree of vasodilatation achieved by various diagnostic methods (arterial occlusion, ganglionic block established by certain agents, lumbar sympathetic block, spinal anesthesia, and indirect heating) was studied by means of the pneumo-plethysmogram as well as through readings of skin temperature and skin resistance. The data obtained were interpreted as to their value in determining the type of patient with vascular disease for whom lumbar sympathectomy would be of noticeable benefit. Arterial occlusion proved itself a rapid and simple method which in most patients produced satisfactory results. As a rule, lumbar sympathectomy was effective in patients who preoperatively had shown a positive response upon release of arterial occlusion. A negative response, that is, absence of significant increase in blood flow, does not necessarily indicate organic disease, and cannot be taken to mean that lumbar sympathectomy would always be ineffective. Ganglionic block, using 2.6 dimethyl piperidinium bromide or tetraethylammonium ion, was generally less reliable in indicating the probable results of sympathectomy than lumbar sympathetic block or indirect heating. Lumbar sympathetic block with procaine was followed by a greater increase in skin temperature and blood flow than spinal anesthesia, and permitted far more accurate conclusions as to the probable outcome of sympathectomy. Subsequent to indirect heating the plethysmogram showed characteristic differences depending on the degree of vascular disease present. From the effect of this simple, safe and painless method upon the relative blood flow to the toe it becomes possible to arrive at a comparatively accurate estimate of the clinical benefit to be expected from lumbar sympathectomy.  相似文献   

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烘烤罗汉果的适宜温度探讨   总被引:2,自引:1,他引:1  
为了保证罗汉果的质量,我们对烘烤罗汉果的适宜温度进行了探讨,实验结果表明,用50—75℃温度进行加工,罗汉果的质量比较好。  相似文献   

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正TYPES OF ARTICLES1.Research articles Research articles belong to the full length article type,and should include elements as follows:title,running title,and byline;correspondent footnote;abstract and keywords;introduction;materials and methods;  相似文献   

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正TYPES OF ARTICLES 1. Research articles Research articles belong to the full length article type, and should include elements as follows:title, running title, and byline; correspondent footnote; abstract and keywords; introduction; materials and methods;results; discussion; acknowledgements; compliance; author contributions; references; figure legends and figures/tables. The article length  相似文献   

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CALL FOR PAPER     
《Bioethics》1991,5(2):vi-vi
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