期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
湖南省科学技术综合水平分析
1
作者 丁碧云 潘奇才 《科技进步与对策》 CSSCI 北大核心 1994年第3期45-47,共3页
湖南省科学技术综合水平分析丁碧云,潘奇才(湖南省科委邮编.410001)1988年编制湖南省2000年科技发展规划的时候,对湖南科技投入水平、科技产出水平及科技综合水平在全国的地位作过定量研究。当时是根据1986年国... 湖南省科学技术综合水平分析丁碧云,潘奇才(湖南省科委邮编.410001)1988年编制湖南省2000年科技发展规划的时候,对湖南科技投入水平、科技产出水平及科技综合水平在全国的地位作过定量研究。当时是根据1986年国家科委《科技统计数据集》提供的自然... 展开更多
关键词 科技水平 综合水平分析 湖南
下载PDF
关于农业经济与生态环境协调发展问题研究
2
作者 徐启龙 《环渤海经济瞭望》 2021年第6期172-173,共2页
以河南省为例分析了农业经济与生态环境协调发展问题,构建了农业经济、生态环境评价指标体系,通过耦合协调模型对2016年-2020年河南省农业经济、生态环境的协调发展状况进行分析,分析显示,自2016年以来,河南省农业经济、生态环境发展水... 以河南省为例分析了农业经济与生态环境协调发展问题,构建了农业经济、生态环境评价指标体系,通过耦合协调模型对2016年-2020年河南省农业经济、生态环境的协调发展状况进行分析,分析显示,自2016年以来,河南省农业经济、生态环境发展水平均明显提升,二者的协调度、耦合度也明显增加,生态环境发挥了促进农业经济发展的作用,但为进一步促进农业发展,仍需加强生态环境治理与保护工作,提升生态环境发展水平。 展开更多
关键词 农业经济发展 农业生态环境 协调发展评估 综合水平分析
下载PDF
Study on the extra X chromosome's effect on the hormone level of Klinefelter's syndrome
3
作者 TU Zhi-ming HONG Hui-li SONG Jie 《Journal of Life Sciences》 2007年第1期7-13,共7页
Klinefelter's syndrome is an inherited (genetic) disorder found only in men caused by at least one extra X chromosome in a cell. Does the extra X chromosome have any effect on the hormone level of Klinefelter's Sy... Klinefelter's syndrome is an inherited (genetic) disorder found only in men caused by at least one extra X chromosome in a cell. Does the extra X chromosome have any effect on the hormone level of Klinefelter's Syndrome? In this paper, 25 subjects with Klinefelter's syndrome, 30 infertile subjects and 36 normal men without Klinefelter's syndrome were compared each other in endocrinology profile and cytogenetics. Subjects with Klinefelter's syndrome were identified by the karyotypes 47, XXY or 47, XXY/46XY, and positive of the X-chromatins (Barr bodies). Hormone analysis of subjects with Klinefelter's syndrome showed that the testosterone (T) values were lower than those of the normal subjects, while the FSH and LH values were higher than those of the normal people; in the infertile experiment subjects without Klinefelter's Syndrome, the karyotypes are 46, XY, with negative of the X-chromatins. The testosterone (T) values of these subjects were also lower than those of the normal people, but the FSH and LH values were within the normal range. These results indicated that endocrinological test on infertile subjects can be used to determine whether a cytogenetic analysis is necessary, and hence exclude non- Klinefelter's syndrome. The mechanism of the occurrence of this difference, its clinical applications and the relationship among the karyotypes, the endocrinological test and the severity of the phenotype are discussed. Lyon's hypothesis stating that only one of the two X-chromosomes is genetically active in female cells, but our study concluded that the extra X chromosome do have effect on the hormone level of Klinefelter's Syndrome. 展开更多
关键词 Klinefelter's syndrome HORMONE X-CHROMOSOME Barr body
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部