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大药片落锤撞击感度研究 被引量:22
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作者 代晓淦 向永 +1 位作者 申春迎 吴小勇 《爆炸与冲击》 EI CAS CSCD 北大核心 2006年第4期381-384,共4页
设计建立了一种炸药大药片撞击感度试验方法。落锤质量为20kg、落高度为0~15m。对规格黟20mm×5mm、重约2.8g的大药片进行撞击感度测试。试验测试了两种典型炸药Tetryl和JOB-9003炸药的落锤撞击感度,落锤撞击Tetryl炸药和JOB-900... 设计建立了一种炸药大药片撞击感度试验方法。落锤质量为20kg、落高度为0~15m。对规格黟20mm×5mm、重约2.8g的大药片进行撞击感度测试。试验测试了两种典型炸药Tetryl和JOB-9003炸药的落锤撞击感度,落锤撞击Tetryl炸药和JOB-9003炸药的爆炸阚值落高分别约3.5m和6.5m。对落锤撞击JOB-9003炸药样品的过程进行了数值计算。计算结果与试验值相符。试验结果表明。该试验方法可以测量炸药的落锤撞击感度。 展开更多
关键词 爆炸力学 撞击感度 落锤 大药片
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Effects of sulfasalazme on biopsy mucosal pathologies and histological grading of patients with active ulcerative colitis 被引量:4
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作者 Ying-Qiang Zhong Zhao-Hua Zhu +3 位作者 Qi-Kui Chen Jun Zhan Hua-Rong Huang Lian-Chun Xing 《World Journal of Gastroenterology》 SCIE CAS CSCD 2005年第28期4435-4438,共4页
AIM: To investigate the mechanisms of sulfasalazine (SASP) in the treatment of ulcerative colitis (UC).METHODS: Changes of pathological signs and histological grading of 106 patients with active UC were observed... AIM: To investigate the mechanisms of sulfasalazine (SASP) in the treatment of ulcerative colitis (UC).METHODS: Changes of pathological signs and histological grading of 106 patients with active UC were observed before and after the treatment with SASP, 1 g, thrice daily for 6 wk.RESULTS: The effect of SASP on the vasculitis in lamina propria was 48.2% and 17.4% in the mild active UC (P〈0.001) and 68% and 26.7% in the moderate active UC (P〈0.001) before and after treatment, Fibroid necrosis of vessel wail was found in one case of mild UC and two cases of moderate UC before treatment and was not found after treatment, No thrombosis was found in mild UC before and after treatment, while thrombosis was found in one case of moderate UC before treatment, The effect on mucosal glandular abnormality was 30.4% and 13.0% in mild UC (P〈0.05), and 42% and 40% in moderate UC (P〉0.05) before and after treatment, The rate of eosinophil infiltration was 98.2% and 80,4% in mild UC (P〈0.01),and 100% and 91,1% in moderate UC (P〈0.05) before and after treatment, The effect on crypt abscess was 21.4% and 4.4% in mild UC (P〈0.05), and 48% and 13.3% in moderate UC (P〈0.001) before and after treatment. The effect on mucosal pathohistological grading was 2.00±0.84 and 0.91±0.46 in mild UC (P〈0.001), and 2.49±0.84 and 1.31±0.75 in moderate UC (P〈0.001) before and after treatment.CONCLUSION: SASP can improve small vessel lesions and crypt abscesses and reduce neutrophilic and eosinophilic leukocyte infiltration in inflammatory mucosa of UC. 展开更多
关键词 UlceraUve colitis Biopsy mucosae SULFASALAZINE PATHOLOGY
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Study on Drug Property Differences of Shexiang (Moschus) and Bingpian (Borneolum Synthcticum) Based on Analysis of Biothermodynamics
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作者 程丹红 王建 +5 位作者 曾南 夏厚林 傅勇 鄢丹 赵艳玲 肖小河 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2011年第1期21-26,共6页
Objective: To study the drug property differences of Shexiang (Moschus) and Bingpian (Borneolum Synthcticum) with biothermodynamics, and to verify the objectivity and authenticity of the drug property. Methods: The gr... Objective: To study the drug property differences of Shexiang (Moschus) and Bingpian (Borneolum Synthcticum) with biothermodynamics, and to verify the objectivity and authenticity of the drug property. Methods: The growth-thermogram curves of Escherichia coli (E. coli) affected by Shexiang (Moschus) and Bingpian (Borneolum Synthcticum) at different concentrations were determined with microcalorimetry, and the power-time curves (thermogram curves) of E. coli metabolism and characteristic parameters, such as growth rate constant (k), maximum output power (Pm), peak time (tp), total heat-output (Qt), etc. were analyzed with the principal component analysis (PCA) to find the close correlative parameters, so as to objectively reflect the drug property differences of Shexiang (Moschus) and Bingpian (Borneolum Synthcticum). Results: The values of P2 in the second exponential growth phase increased with the increase of the concentrations of Shexiang (Moschus) and Bingpian (Borneolum Synthcticum), and the P2 of Shexiang (Moschus) was larger than that of Bingpian (Borneolum Synthcticum); Q2 increased with the increase of the concentrations of Shexiang (Moschus), but for Bingpian (Borneolum Synthcticum) it was opposite. It is indicated that they have different effects on P2 and Q2 of E. coli in the second exponential growth phase, and have differences in warm and cold natures. Conclusion: The microcalorimetry can accurately and objectively appraise differences of the drug property of Shexiang (Moschus) and Bingpian (Borneolum Synthcticum) and verify the objectivity and authenticity of the drug property, so as to provide a new and useful method for studies of the drug property of Chinese drugs. 展开更多
关键词 Shexiang and Bingpian biothermodynamics properties of Chinese drugs
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