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Determination of Metamizole Sodium by Cyclic Voltammetry Under Microwave Activation

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Chemical Research in Chinese Universities 2010年第4期26卷 537-540页

作者： LI Li-jun CHENG Long-jun CAI Zhuo LAN Su-mei guo Xiao-fei LI Yan-qing Department of Biological and Chemical Engineering Guangxi University of Technology Liuzhou 545006 P. R. China College of Chemistry and Chemical Engineering Guangxi University Nanning 530004 P. R. China

Microwave radiation was applied to the detection of metamizole sodium by cyclic voltammetry. The electrochemical characteristics of metamizole sodium were studied by cyclic voltammetry at GC electrode under microwave radiation and a considerable current enhancement was observed for metamizole sodium in aqueous 0.05 mol/L H2SO4. Under the optional conditions, metamizole sodium was determined in the absence and presence of microwave activation. In the absence of microwave activation cyclic voltammogram of metamizole sodium shows good linear relationship in a concentration range of 8.0×10^-5-1.0×10^-3 mol/L in aqueous 0.05 mol/L H2SO4 with a detection limit of 6.75× 10^-6 mol/L（S/N=3） and the equation of linear regression is Ip=12.973c-0.1905（R^2=0.9996, n=6）; in the presence of 80 W microwave activation cyclic voltammogram of metamizole sodiumin shows good linear relationship in a concentration range of 4.0× 10^-5-1.0×10^-3 mol/L in aqueous 0.05 mol/L H2SO4 with a detection limit of 4,41 × 10^-6 mol/L（S/N=3） and the equation of linear regression is Ip=25.107c-0.1193（R^2=0.9973, n=7）. The current in the presence of 80 W microwave activation increases to about 2 orders of magnitude compared with that in the absence of microwave activation. The proposed method in the presence of microwave activation showed high selectivity and sensitivity, and the sampling of the disposal method is simple. The method was verified by the determination of Metamizole Sodium tablet with satisfactory results.

关键词： Microwave Metamizole sodium Cyclic voltammetry

Comparative study on forming limit prediction of AA7075-T6 sheet with M−K model and Lou−Huh criterion

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Transactions of Nonferrous Metals Society of China 2020年第6期30卷 1463-1477页

作者： guo-jiang dong Zhi-wei CHEN Zhuo-yun YANG Bo-cheng FAN Hebei Key Laboratory of Special Delivery Equipment Yanshan UniversityQinhuangdao 066004China Key Laboratory of Advanced Forging&Stamping Technology and Science of Ministry of Education of China Yanshan UniversityQinhuangdao 066004China

In order to effectively predict the fracture of AA7075-T6 sheet, the forming limit curves of AA7075-T6 high-strength sheet were drawn according to Morciniak Kuczyski (M K) model and Lou Huh criterion, respectively. The errors between the predicted values of the two theoretical prediction models and experimental values were calculated by error analysis. The forming limit curves were verified by the punch stretch test to evaluate the prediction accuracy of M K model and Lou Huh criterion. The error analysis results show that the mean error of Lou Huh criterion with the optimal parameters for all tensile specimens is 25.04%, while the mean error of M K model for all tensile specimens is 74.24%. The prediction accuracy of Lou Huh criterion in predicting the fracture of AA7075-T6 sheet is higher. The punch stretch test results show that the forming limit curve drawn by Lou Huh criterion can effectively predict the fracture of AA7075-T6 sheet, but the prediction accuracy of M K model is relatively poor.

关键词： ductile fracture criterion M K model forming limit diagram AA7075-T6 sheet

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1例难治性癌痛的药物转换及药学监护

海峡药学 2024年第2期36卷 81-82页

作者：何素梅仇俊兰施怡张冠英江翊国南京大学医学院附属苏州医院药学部江苏苏州215153 南京大学医学院附属苏州医院肿瘤科江苏苏州215153

目的探讨临床药师在难治性癌痛患者中的个体化药学服务,为该类患者药学监护提供参考。方法通过参与1例晚期胃癌伴难治性癌痛患者出现阿片类药物耐受后的药学监护,临床药师对其镇痛方案分析,综合疼痛评估,及时优化给药方案,将吗啡转换为... 详细信息

目的探讨临床药师在难治性癌痛患者中的个体化药学服务,为该类患者药学监护提供参考。方法通过参与1例晚期胃癌伴难治性癌痛患者出现阿片类药物耐受后的药学监护,临床药师对其镇痛方案分析,综合疼痛评估,及时优化给药方案,将吗啡转换为氢吗啡酮,快速有效地控制疼痛。结果患者疼痛缓解,未出现爆发痛,患者生活质量改善。结论临床药师对难治性癌痛患者开展目标性药学服务,不断提高专业能力,在疼痛治疗团队中发挥了重要的协作作用。

关键词：临床药师难治性癌痛氢吗啡酮药学监护

Towards a circular metal additive manufacturing through recycling of materials: A mini review

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Journal of Central South University 2020年第4期27卷 1134-1145页

作者： XIA Yang dong Zhao-wang guo Xue-yi TIAN Qing-hua LIU Yong School of Metallurgy and Environment Central South UniversityChangsha 410083China State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China

Additive manufacturing is a new emerging technology which is ideal for low-to-zero waste production, and it is considered to be a green and clean process that has the potential to lower the cost and energy consumption of production. However, the cost of the feedstock for additive manufacturing and the additive manufactured parts is usually very high, which hinders the further application of additive manufacturing, especially for the metal additive manufacturing. The concept of circular metal additive manufacturing involves the recycling of the metal feedstock and the additive manufactured parts leading to the truly zero waste production and the most energy saving. This paper reviews the technologies that help the formation of a circular metal additive manufacturing through recycling of the feedstocks and the damaged metal parts. Reactive metals, such as titanium, tend to be contaminated easily during handling and production. Recycling of the titanium for achieving a circular titanium additive manufacturing is reviewed in detail.

关键词： recycling additive manufacturing titanium powder

Flow Field of Metallic Fluid Acted by Electromagnetic and Centrifugal Force

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Journal of Iron and Steel Research International 2004年第1期11卷 9-11页

作者： QIU Yi-qing LUO Zong-an JIA Guang-lin LIU Xiang-hua WANG guo-dong Northeastern University

According to the principle of electromagnetism and hydrodynamics,a mathematical model of flow field for metallic fluid acted by electromagnetic and centrifugal forces was *** calculation results showed that the relative velocity between metallic fluid layers rises and the absolute rotational velocity of metallic fluid falls with the increase of magnetic induction *** increase of centrifugal revolution hardly affects the relative velocity between metallic fluid layers,but can enhance the absolute rotational velocity of metallic fluid.

关键词： metallic fluid flow field electromagnetic force centrifugal force

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生物降解材料在果蔬保鲜中的应用

包装工程 2024年第13期45卷 184-193页

作者：曾仪雯李中华周恩弛梁栋李安洁梅佳睿吴湘涵李丹张春红海军军医大学上海200433 海军特色医学中心上海200433

目的满足海洋航行人员对特殊果蔬的营养需求,开发新型环保保鲜薄膜配方,以延长果蔬的储存时间。方法通过调整淀粉/可生物降解树脂/增塑剂的比例,制备热塑性淀粉/聚烯烃(TPS/PE)薄膜,并开发各种环保的保鲜膜配方,如水溶解薄膜和生物降解... 详细信息

目的满足海洋航行人员对特殊果蔬的营养需求,开发新型环保保鲜薄膜配方,以延长果蔬的储存时间。方法通过调整淀粉/可生物降解树脂/增塑剂的比例,制备热塑性淀粉/聚烯烃(TPS/PE)薄膜,并开发各种环保的保鲜膜配方,如水溶解薄膜和生物降解薄膜。实验使用了4种配方的薄膜对5种常见的蔬菜进行保鲜测试,主要通过监测蔬菜的失水率和黄化率来评估薄膜的保鲜性能。结果保鲜膜中蔬菜的腐烂率(失水率和黄化率)明显低于传统储存方法。5种易腐蔬菜的平均储存期可达55d,腐烂率不超过15%。结论4种保鲜薄膜均有良好的果蔬保鲜作用。

关键词：保鲜膜热塑性淀粉吹膜挤压水溶性

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LMNA基因突变心肌病子代传递阻断1例

中华心血管病杂志 2024年第5期52卷 538-541页

作者：赵晓燕王丹王楚楚徐家伟杜文婷赵静郭雅丽卢艳雨毛云李小威王晓娟郭艺红李凌董建增郑州大学第一附属医院心血管内科郑州450052 郑州大学生命科学学院生物信息学系郑州450000 郑州大学第一附属医院生殖医学中心郑州450052 郑州大学第一附属医院产科郑州450052

LMNA基因编码的核纤层蛋白A/C是核膜的组成成分。该基因的致病性突变可导致家族性扩张型心肌病,遗传方式为常染色体显性遗传;LMNA突变引起的家族性扩张型心肌病常累及心脏传导系统,表现为多种心律失常,包括窦房结功能障碍、心房颤动、... 详细信息

LMNA基因编码的核纤层蛋白A/C是核膜的组成成分。该基因的致病性突变可导致家族性扩张型心肌病,遗传方式为常染色体显性遗传;LMNA突变引起的家族性扩张型心肌病常累及心脏传导系统,表现为多种心律失常,包括窦房结功能障碍、心房颤动、房室传导阻滞、室性心动过速和心室颤动,最终出现心室扩张和心力衰竭,猝死风险高。该文报道1例家族性扩张型心肌病女性患者,基因检测示LMNA c.1489-1G>C突变,通过应用胚胎植入前遗传学检测筛选出不携带致病基因的囊胚进行胚胎移植,成功妊娠并生育健康后代。

关键词：心肌病 LMNA基因突变致病性变异胚胎植入前遗传学检测子代传递阻断常染色体显性遗传基因测序心律失常

CTCA定量参数对冠心病患者短期病死预测价值

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临床误诊误治 2024年第8期37卷 24-29页

作者：董小波张仲慧郭庆乐焦鹏飞开滦总医院核医学科河北唐山063000 开滦总医院CT室河北唐山063000

目的探讨CT冠状动脉造影(CTCA)定量参数对冠心病患者短期病死预测价值。方法选取2021年3月—2023年3月收治的冠心病200例,比较不同冠状动脉病变程度冠心病患者CTCA定量参数(动脉阻力指数、总斑块负荷和斑块最小密度CT值),分析CTCA定量... 详细信息

目的探讨CT冠状动脉造影(CTCA)定量参数对冠心病患者短期病死预测价值。方法选取2021年3月—2023年3月收治的冠心病200例,比较不同冠状动脉病变程度冠心病患者CTCA定量参数(动脉阻力指数、总斑块负荷和斑块最小密度CT值),分析CTCA定量参数与冠心病患者冠状动脉病变程度相关性,探讨术后1年冠心病患者病死情况,分析CTCA定量参数与冠心病患者短期病死风险关联性,评价CTCA定量参数对冠心病患者短期病死预测价值。结果不同冠状动脉病变程度冠心病患者动脉阻力指数、总斑块负荷逐渐升高,斑块最小密度CT值逐渐降低(P<0.05)。冠心病患者动脉阻力指数、总斑块负荷与疾病类型、病变支数及狭窄程度呈正相关,斑块最小密度CT值与疾病类型、病变支数及狭窄程度呈负相关(P<0.05)。冠心病200例中39例(19.50%)术后1年病死。动脉阻力指数、总斑块负荷和斑块最小密度CT值与冠心病患者短期病死有关(P<0.01)。对冠心病患者短期病死预测的受试者工作特征曲线下面积动脉阻力指数、总斑块负荷和斑块最小密度CT值三者联合明显高于单独预测(P<0.05)。结论CTCA定量参数与冠心病患者冠状动脉病变程度密切相关,且联合各参数预测冠心病患者短期病死价值较高。

关键词：冠心病 CT冠状动脉造影定量参数动脉阻力指数总斑块负荷斑块最小密度CT值冠状动脉病变程度病死

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生物操纵对常见底栖丝状绿藻的控制研究

水生态学杂志 2024年第3期45卷 112-120页

作者：张怡光张曼李玫吕绪聪张银鹏李昊钰赵慧鲁雨果秦岩李学军河南师范大学水产学院河南新乡453007

为调控水体丝状绿藻的生长,提供安全高效的绿藻暴发解决方案,通过操纵水体中不同的生物种类,探究水生动物对底栖丝状绿藻生长的抑制效果。控制实验Ⅰ研究了耳萝卜螺(Radix auricularia)、子陵吻鰕虎鱼(Rhinogobius giurinus)、中华鳑鲏(... 详细信息

为调控水体丝状绿藻的生长,提供安全高效的绿藻暴发解决方案,通过操纵水体中不同的生物种类,探究水生动物对底栖丝状绿藻生长的抑制效果。控制实验Ⅰ研究了耳萝卜螺(Radix auricularia)、子陵吻鰕虎鱼(Rhinogobius giurinus)、中华鳑鲏(Rhodeus sinensis)和日本沼虾(Macrobrachium nipponense)对底栖丝状绿藻水绵(Spirogyra sp.)的控制效果;控制实验Ⅱ研究了中华鳑鲏对水绵、水网藻(Hydrodictyon reticulatum)、刚毛藻(Cladophora sp.)生长的抑制效果。结果表明,中华鳑鲏实验Ⅰ处理组的固着态水绵生物量从实验前期的90 g/m^(2)下降到实验末期的34 g/m^(2),相对于其他生物操纵对象,中华鳑鲏对浮游态和固着态水绵表现出极显著的抑制效果(P0.05),也表明中华鳑鲏对底栖丝状绿藻的抑制效果,特别是对水绵具有显著的抑制效果。中华鳑鲏在抑制底栖丝状绿藻生长的同时,对水体中其他浮游植物和浮游动物的影响并不显著(P>0.05),表明中华鳑鲏作为控制丝状绿藻的潜在生物操纵对象具有很好的应用前景。

关键词：生物操纵丝状绿藻中华鳑鲏水绵

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