目的了解持不同生育态度的男男性接触者(Men who have sex with men,MSM)艾滋病(AIDS)相关知识、行为情况,为有效开展艾滋病干预提供依据。方法招募志愿者,通过滚雪球的方法收集调查问卷,采用频数、卡方检验统计分析方法。结果 146人中...目的了解持不同生育态度的男男性接触者(Men who have sex with men,MSM)艾滋病(AIDS)相关知识、行为情况,为有效开展艾滋病干预提供依据。方法招募志愿者,通过滚雪球的方法收集调查问卷,采用频数、卡方检验统计分析方法。结果 146人中希望生育后代的有39人(26.7%),非希望生育后代的有107人(73.3%),希望生育后代组和非希望生育后代组均与艾滋病相关知识无统计学意义(P>0.05),两组与艾滋病相关行为有统计学意义(P<0.05)。结论希望生育后代组与非希望生育后代组的艾滋病相关知识无显著性差异;艾滋病相关行为有统计学意义。提示我们在工作中应加强高危行为干预,充分发放安全套,并提倡全程正确使用安全套。展开更多
Effects of light intensity on growth, development and formation on Fagopy- rum cymosum were explored with natural light intensities at 100%（A）, 85.2%（B）, 75.8%（C） and 59.7%（D）. The results showed that the decl...Effects of light intensity on growth, development and formation on Fagopy- rum cymosum were explored with natural light intensities at 100%（A）, 85.2%（B）, 75.8%（C） and 59.7%（D）. The results showed that the decline of light intensity re- duced nutrient growth period, so that plant growth stage entered in advance and extended, which indicated that the decline of light intensity would lower leaf number and area, the number of twigs from the stem, as well as photosynthate. Further- more, the reduction degree increased upon light intensity decrease degree, and the proper shading improved stem height and leaf area enhanced before growth term.展开更多
[ Objective] This study was to understend the optimized combination of planting density, duration of disclosing plastic film and nitrogen fertilization under no-tillage cultivation. [ Method] Quadratic polynomial regr...[ Objective] This study was to understend the optimized combination of planting density, duration of disclosing plastic film and nitrogen fertilization under no-tillage cultivation. [ Method] Quadratic polynomial regression and saturated D-optimal design were employed to investigate the effects of planting density, duration of disclosing plastic film and nitrogen fertilization on the dynamics growth of rapeseed under no-tillage cultivation.[ Result] Within the experimental range, the growth dynamics of no-tillage cultivated rapeseed assumed a rise-fall tend. For the effects to the growth dynamics of no-tillage cultivated rapeseed, nitrogen application amount was higher than planting density and duration of disclosing plastic film. The interaction effect between planting density and duration of disclosing plastic film was higher than that between nitrogen application amount and planting density, and between nitrogen application amount and duration of disclosing plastic film. [ Conclusion] The optimized combination of these factors for dynamic growth of rapeseed under no-tillage cultivation was determined to be： planting density of per hectare 154 925 individuals, duration of disclosing plastic film of 110 d, nitrogen application amount of 315 kg/hm^2.展开更多
With sports as its carrier, youth hip hop culture reflects the absorption, digestion and development of foreign culture among Chinese young people. Hip-hop is popular among Chinese teenagers is not only due to the you...With sports as its carrier, youth hip hop culture reflects the absorption, digestion and development of foreign culture among Chinese young people. Hip-hop is popular among Chinese teenagers is not only due to the young people＇s psychological needs, but also because of the profound connotation of the era. Hip hop can contribute to the campus cultural construction. However, it also implies that local youth culture is missing in China. Hip hop dance was born in 1960s and classified into hip hop culture in 1970s as a typical representative of the four Hip-hop elements together with Graffiti, DJing, and MCing. It was spread into China in 1980s together with the movie Breakin： Hip hop has gradually become popular with Guangzhou, Shanghai, and Beijing as the center drawing much attention of the Chinese youth. Its educational significance cannot ignored from the perspective of youth culture, reflecting the absorption, digestion and development of foreign culture among Chinese young people,At the same time, it provides a good platform for young people to show their unique personality, passion, courage and life attitude.展开更多
文摘目的了解持不同生育态度的男男性接触者(Men who have sex with men,MSM)艾滋病(AIDS)相关知识、行为情况,为有效开展艾滋病干预提供依据。方法招募志愿者,通过滚雪球的方法收集调查问卷,采用频数、卡方检验统计分析方法。结果 146人中希望生育后代的有39人(26.7%),非希望生育后代的有107人(73.3%),希望生育后代组和非希望生育后代组均与艾滋病相关知识无统计学意义(P>0.05),两组与艾滋病相关行为有统计学意义(P<0.05)。结论希望生育后代组与非希望生育后代组的艾滋病相关知识无显著性差异;艾滋病相关行为有统计学意义。提示我们在工作中应加强高危行为干预,充分发放安全套,并提倡全程正确使用安全套。
基金Special Funds for Fundamental Work of Ministry of Science and Technology(2006BAD13B02-13)~~
文摘Effects of light intensity on growth, development and formation on Fagopy- rum cymosum were explored with natural light intensities at 100%（A）, 85.2%（B）, 75.8%（C） and 59.7%（D）. The results showed that the decline of light intensity re- duced nutrient growth period, so that plant growth stage entered in advance and extended, which indicated that the decline of light intensity would lower leaf number and area, the number of twigs from the stem, as well as photosynthate. Further- more, the reduction degree increased upon light intensity decrease degree, and the proper shading improved stem height and leaf area enhanced before growth term.
基金Supported by Key Agricultural R&D Program in Guizhou Province dur-ing the Eleventh Five-year Plan[NZ(2005)3001]~~
文摘[ Objective] This study was to understend the optimized combination of planting density, duration of disclosing plastic film and nitrogen fertilization under no-tillage cultivation. [ Method] Quadratic polynomial regression and saturated D-optimal design were employed to investigate the effects of planting density, duration of disclosing plastic film and nitrogen fertilization on the dynamics growth of rapeseed under no-tillage cultivation.[ Result] Within the experimental range, the growth dynamics of no-tillage cultivated rapeseed assumed a rise-fall tend. For the effects to the growth dynamics of no-tillage cultivated rapeseed, nitrogen application amount was higher than planting density and duration of disclosing plastic film. The interaction effect between planting density and duration of disclosing plastic film was higher than that between nitrogen application amount and planting density, and between nitrogen application amount and duration of disclosing plastic film. [ Conclusion] The optimized combination of these factors for dynamic growth of rapeseed under no-tillage cultivation was determined to be： planting density of per hectare 154 925 individuals, duration of disclosing plastic film of 110 d, nitrogen application amount of 315 kg/hm^2.
文摘With sports as its carrier, youth hip hop culture reflects the absorption, digestion and development of foreign culture among Chinese young people. Hip-hop is popular among Chinese teenagers is not only due to the young people＇s psychological needs, but also because of the profound connotation of the era. Hip hop can contribute to the campus cultural construction. However, it also implies that local youth culture is missing in China. Hip hop dance was born in 1960s and classified into hip hop culture in 1970s as a typical representative of the four Hip-hop elements together with Graffiti, DJing, and MCing. It was spread into China in 1980s together with the movie Breakin： Hip hop has gradually become popular with Guangzhou, Shanghai, and Beijing as the center drawing much attention of the Chinese youth. Its educational significance cannot ignored from the perspective of youth culture, reflecting the absorption, digestion and development of foreign culture among Chinese young people,At the same time, it provides a good platform for young people to show their unique personality, passion, courage and life attitude.
