To evaluate current status of male sperm quality and compare with the data of 110 cases in 1980's from same laboratory,434 fertile man and 346 cases of man with uncertain sperm quality were examined.The results sh...To evaluate current status of male sperm quality and compare with the data of 110 cases in 1980's from same laboratory,434 fertile man and 346 cases of man with uncertain sperm quality were examined.The results showed sperm quality was significantly declined.The changes were most obvious in the sperm counts and total number of sperm,which were decreased by 54.2%~98.9% and 39.7%~114.5% respectively.Among parameters of sperm quality,motility of sperm is most affected in overall motility,a level and a+b level motility,with percentage of abnormal case were 18.4%~42.3%,37.5%~68.1% and 39.5%~75.2% respectively.The number of cases within normal range of sperm parameters was merely 33.6% for group of fertile man and 26.0% for the group of man with uncertain sperm quality.These results suggest that it should pay more attention to the decline of sperm quality.展开更多
American Literature Education Status and its significance are: Currently, the community is generally filled with quick success; anxious atmosphere has penetrated the influence of contemporary students. No matter what...American Literature Education Status and its significance are: Currently, the community is generally filled with quick success; anxious atmosphere has penetrated the influence of contemporary students. No matter what time, we are not able to separate literature and language these two concepts to analyze literary language and it is the most important bearing carrier, and the language is the basic tool to shape the image of literature to reflect the social life and express thoughts and feelings.展开更多
文摘To evaluate current status of male sperm quality and compare with the data of 110 cases in 1980's from same laboratory,434 fertile man and 346 cases of man with uncertain sperm quality were examined.The results showed sperm quality was significantly declined.The changes were most obvious in the sperm counts and total number of sperm,which were decreased by 54.2%~98.9% and 39.7%~114.5% respectively.Among parameters of sperm quality,motility of sperm is most affected in overall motility,a level and a+b level motility,with percentage of abnormal case were 18.4%~42.3%,37.5%~68.1% and 39.5%~75.2% respectively.The number of cases within normal range of sperm parameters was merely 33.6% for group of fertile man and 26.0% for the group of man with uncertain sperm quality.These results suggest that it should pay more attention to the decline of sperm quality.
文摘American Literature Education Status and its significance are: Currently, the community is generally filled with quick success; anxious atmosphere has penetrated the influence of contemporary students. No matter what time, we are not able to separate literature and language these two concepts to analyze literary language and it is the most important bearing carrier, and the language is the basic tool to shape the image of literature to reflect the social life and express thoughts and feelings.