The effect of different concentrations of natural macromolecular compound on the characteristics of nutrient release in the membrane materials of organic-inorganic compound film-coated urea was discussed, and the opti...The effect of different concentrations of natural macromolecular compound on the characteristics of nutrient release in the membrane materials of organic-inorganic compound film-coated urea was discussed, and the optimal concentrations for better nutrient release was proposed. The characteristics of nutrient release of film-coated urea were evaluated by soil column leaching experiment. Organic-inorganic compound film-coated urea showed good characteristics of nutrient release, which could be well simulated by Logistic curve. The two parameters in this curve, a and r, can be used to present nutrient release of film-coated urea, and followed the order of B 〉 C 〉 A and C 〈 B 〈 A, respectively, indicating that the release was stronger with the increasing concentration of natural macromolecular compound in the membrane, which implied better controllability of nutrient release. The concentration of 5% of natural macromolecular compound showed better characteristic of nutrient release and can be utilized as a membrane material combined with inorganic mineral powders to develop film-coated slow-release fertilizer.展开更多
目的:系统评价乳癖消治疗乳腺增生症的有效性,为临床提供循证参考。方法:计算机检索中国期刊全文数据库、中国学位论文全文数据库、万方数据库、中文科技期刊数据库、Cochrane图书馆、Medline和Pub Med,收集乳癖消联合三苯氧胺(试验...目的:系统评价乳癖消治疗乳腺增生症的有效性,为临床提供循证参考。方法:计算机检索中国期刊全文数据库、中国学位论文全文数据库、万方数据库、中文科技期刊数据库、Cochrane图书馆、Medline和Pub Med,收集乳癖消联合三苯氧胺(试验组)对比单纯三苯氧胺(对照组)治疗乳腺增生症的随机对照试验(RCT),提取资料并按照修改后的Jadad评分量表和Cochrane偏倚风险评估量表评价纳入研究质量,采用Rev Man 5.3统计软件进行Meta分析。结果:共纳入23项RCT,合计2926例患者。Meta分析结果显示,试验组患者临床疗效[OR=3.60,95%CI(2.86,4.53),P〈0.00001]、孕酮P[MD=1.54,95%CI(0.71,2.37),P=0.0003]显著高于对照组,胃肠道反应[OR=0.66,95%CI(0.47,0.92),P=0.01]、月经异常发生情况[OR=0.27,95%CI(0.18,0.40),P〈0.00001]、促黄体激素LH[MD=-0.98,95%CI(-1.84,-0.12),P=0.02]、肿块大小[MD=-0.68,95%CI(-0.86,-0.49),P〈0.00001]、疼痛分级[OR=0.10,95%CI(0.04,0.22),P〈0.00001]显著低于对照组,差异均有统计学意义。血清雌激素E2[MD=-3.95,95%CI(-8.68,0.78),P=0.10]比较,差异无统计学意义。结论:乳癖消联合三苯氧胺治疗乳腺增生症疗效较好,可以显著改善患者的治疗效果,调节患者内分泌系统,减轻患者的疼痛感以及控制不良反应发生率。展开更多
基金supported by a key project of Liaoning Province (2006215005)China Ministry of Education (209032)
文摘The effect of different concentrations of natural macromolecular compound on the characteristics of nutrient release in the membrane materials of organic-inorganic compound film-coated urea was discussed, and the optimal concentrations for better nutrient release was proposed. The characteristics of nutrient release of film-coated urea were evaluated by soil column leaching experiment. Organic-inorganic compound film-coated urea showed good characteristics of nutrient release, which could be well simulated by Logistic curve. The two parameters in this curve, a and r, can be used to present nutrient release of film-coated urea, and followed the order of B 〉 C 〉 A and C 〈 B 〈 A, respectively, indicating that the release was stronger with the increasing concentration of natural macromolecular compound in the membrane, which implied better controllability of nutrient release. The concentration of 5% of natural macromolecular compound showed better characteristic of nutrient release and can be utilized as a membrane material combined with inorganic mineral powders to develop film-coated slow-release fertilizer.
文摘目的:系统评价乳癖消治疗乳腺增生症的有效性,为临床提供循证参考。方法:计算机检索中国期刊全文数据库、中国学位论文全文数据库、万方数据库、中文科技期刊数据库、Cochrane图书馆、Medline和Pub Med,收集乳癖消联合三苯氧胺(试验组)对比单纯三苯氧胺(对照组)治疗乳腺增生症的随机对照试验(RCT),提取资料并按照修改后的Jadad评分量表和Cochrane偏倚风险评估量表评价纳入研究质量,采用Rev Man 5.3统计软件进行Meta分析。结果:共纳入23项RCT,合计2926例患者。Meta分析结果显示,试验组患者临床疗效[OR=3.60,95%CI(2.86,4.53),P〈0.00001]、孕酮P[MD=1.54,95%CI(0.71,2.37),P=0.0003]显著高于对照组,胃肠道反应[OR=0.66,95%CI(0.47,0.92),P=0.01]、月经异常发生情况[OR=0.27,95%CI(0.18,0.40),P〈0.00001]、促黄体激素LH[MD=-0.98,95%CI(-1.84,-0.12),P=0.02]、肿块大小[MD=-0.68,95%CI(-0.86,-0.49),P〈0.00001]、疼痛分级[OR=0.10,95%CI(0.04,0.22),P〈0.00001]显著低于对照组,差异均有统计学意义。血清雌激素E2[MD=-3.95,95%CI(-8.68,0.78),P=0.10]比较,差异无统计学意义。结论:乳癖消联合三苯氧胺治疗乳腺增生症疗效较好,可以显著改善患者的治疗效果,调节患者内分泌系统,减轻患者的疼痛感以及控制不良反应发生率。