Dynamic pressure was applied on emulsion explosive by using an underwater explosion measuring apparatus, and the crystallization quantity was measured by dissolution method after emulsion explosive was pressed; the in...Dynamic pressure was applied on emulsion explosive by using an underwater explosion measuring apparatus, and the crystallization quantity was measured by dissolution method after emulsion explosive was pressed; the influence of emulsi- fier content and type was analyzed. The experimental results show that emulsifier content and type have an important effect on crystallization quantity of emulsion explosive. The crystallization quantity will reduce with Span-g0 content from 2% to 4%, so the demulsification and crystallization will decrease if the emulsifier content improves appropriately and the dynamic pressure resistance will increase. For emulsion explosive emulsified by T-152 and Span-g0, the crystallization quantity with T-152 is less than that of Span-g0 under the same dynamic pressure. This shows that the emulsifying effect ofT-152 is better than Soan-80.展开更多
The objective of this study was to assess the quality of randomized controlled trials（RCTs） on pharmaceutical care for asthma tic patients conducted by pharmacists in China's Mainland, to identify the problems i...The objective of this study was to assess the quality of randomized controlled trials（RCTs） on pharmaceutical care for asthma tic patients conducted by pharmacists in China's Mainland, to identify the problems in current studies, and to provide some references for further studies. The China National Knowledge Infrastructure（CNKI）, Wanfang Database, and VIP Database were searched for randomized controlled trials on pharmaceutical care for asthma tic patients, and only those studies undertaken by pharmacists were included. Information about the study design and reporting of selected studies was extracted and collected to systematically analyze these studies. Meanwhile, the Cochrane Collaboration＇s tool for assessing risk of bias was used to assess potential biases related to these studies. Ultimately, 14 articles were included in this study. No study determined the sample size in a scientific way. No article reported a scientific and detailed method of random sequence generation or allocation concealment. Two（14.3%） studies claimed to have implemented a double-blinding and a single-blinding respectively, but neither of them reported any details about how they performed the blinding. No study employed a blinding of outcome assessment. Five（35.7%） studies either stated statistical methods incompletely or used them incorrectly. One（7.1%） study reported an attrition without employing an intention-to-treat analysis. All studies reported eligibility criteria for participants to some extent, and all these criteria involved diagnosis of asthma, but only four（28.6%） of them reported patients＇ ages and three（21.4%） described the severity and the stage of asthma. Nine（64.3%） reported baseline data in the text rather than in a table, and 13（92.9%） involved comparisons between groups with significance tests either explicitly or implicitly. No report made a distinction between primary and secondary outcomes. Two（14.3%） mentioned informed consent of subjects, while no article reported ethical approval. ＂Unclear risk＂ made up the highest percentage of the studies analyzed according to the risk of bias assessment by the Cochrane Collaboration＇s tool. Our study demonstrates that the quality of RCTs on pharmaceutical care for asthma tic patients conducted by Chinese pharmacists is suboptimal, especially with regards to study design and reporti ng.展开更多
基金Supported by the National Natural Science Foundation of China （50574004）
文摘Dynamic pressure was applied on emulsion explosive by using an underwater explosion measuring apparatus, and the crystallization quantity was measured by dissolution method after emulsion explosive was pressed; the influence of emulsi- fier content and type was analyzed. The experimental results show that emulsifier content and type have an important effect on crystallization quantity of emulsion explosive. The crystallization quantity will reduce with Span-g0 content from 2% to 4%, so the demulsification and crystallization will decrease if the emulsifier content improves appropriately and the dynamic pressure resistance will increase. For emulsion explosive emulsified by T-152 and Span-g0, the crystallization quantity with T-152 is less than that of Span-g0 under the same dynamic pressure. This shows that the emulsifying effect ofT-152 is better than Soan-80.
文摘The objective of this study was to assess the quality of randomized controlled trials（RCTs） on pharmaceutical care for asthma tic patients conducted by pharmacists in China's Mainland, to identify the problems in current studies, and to provide some references for further studies. The China National Knowledge Infrastructure（CNKI）, Wanfang Database, and VIP Database were searched for randomized controlled trials on pharmaceutical care for asthma tic patients, and only those studies undertaken by pharmacists were included. Information about the study design and reporting of selected studies was extracted and collected to systematically analyze these studies. Meanwhile, the Cochrane Collaboration＇s tool for assessing risk of bias was used to assess potential biases related to these studies. Ultimately, 14 articles were included in this study. No study determined the sample size in a scientific way. No article reported a scientific and detailed method of random sequence generation or allocation concealment. Two（14.3%） studies claimed to have implemented a double-blinding and a single-blinding respectively, but neither of them reported any details about how they performed the blinding. No study employed a blinding of outcome assessment. Five（35.7%） studies either stated statistical methods incompletely or used them incorrectly. One（7.1%） study reported an attrition without employing an intention-to-treat analysis. All studies reported eligibility criteria for participants to some extent, and all these criteria involved diagnosis of asthma, but only four（28.6%） of them reported patients＇ ages and three（21.4%） described the severity and the stage of asthma. Nine（64.3%） reported baseline data in the text rather than in a table, and 13（92.9%） involved comparisons between groups with significance tests either explicitly or implicitly. No report made a distinction between primary and secondary outcomes. Two（14.3%） mentioned informed consent of subjects, while no article reported ethical approval. ＂Unclear risk＂ made up the highest percentage of the studies analyzed according to the risk of bias assessment by the Cochrane Collaboration＇s tool. Our study demonstrates that the quality of RCTs on pharmaceutical care for asthma tic patients conducted by Chinese pharmacists is suboptimal, especially with regards to study design and reporti ng.
