The growth characteristic of intermetallics during the reaction of solid (Cu,Ag,Au,Fe,Co,Ni,etc) with liquid (Sn,Sb,Bi,Zn) within a very short time of 1～ 2 s at different temperatures has been studied by metallograph...The growth characteristic of intermetallics during the reaction of solid (Cu,Ag,Au,Fe,Co,Ni,etc) with liquid (Sn,Sb,Bi,Zn) within a very short time of 1～ 2 s at different temperatures has been studied by metallographic method for explaining the process in the fillet during soldering. It is indicated that the incongruent compourds often grow up as bamboo shoot form. But congruent compounds grow up basically just by spreading out as a layer along the solid border. Base on these facts,the influence of intermetallics in the fillet during soldering has been discussed.展开更多
目的观察榄香烯乳联合顺铂对恶性胸腔积液患者的治疗作用。方法经影像学、细胞学检查、胸膜穿刺活检证实的恶性胸腔积液患者70例,经采用中心静脉管行胸腔引流术排尽胸腔积液后,随机分为2组,联合组(A组)35例,单药组(B组)35例,A组静脉滴...目的观察榄香烯乳联合顺铂对恶性胸腔积液患者的治疗作用。方法经影像学、细胞学检查、胸膜穿刺活检证实的恶性胸腔积液患者70例,经采用中心静脉管行胸腔引流术排尽胸腔积液后,随机分为2组,联合组(A组)35例,单药组(B组)35例,A组静脉滴注榄香烯乳联合顺铂胸腔注入治疗恶性胸腔积液,B组单纯顺铂胸腔注入治疗恶性胸腔积液。结果治疗结束时,①胸腔积液控制情况,治疗后A组有效率(90.3%)高于B组(46.9%),2组比较差异有统计学意义(P<0.05)。②生活质量,平均生活质量评分(karnofsky point system,KPS)A组较治疗前提高(P<0.05),B组无变化。③不良反应,2组消化道反应存在,胸膜反应、肾损害轻微,未见明显心、肝损害,差异均无统计学意义(P>0.05),而B组骨髓抑制较A组严重(P<0.01)。结论静脉滴注榄香烯乳联合顺铂胸腔注入治疗恶性胸腔积液疗效优于单纯顺铂胸腔注入,榄香烯乳可增加化疗药物的抗癌作用、减轻化疗不良反应。展开更多
Phase diagrams and decomposition for systems of (C 2H 5) 2NH·HCl C 6H 10 O 4 (adipic acid) and (C 2H 5) 2NH·HCl C 10 H 18 O 4 (sebacic acid) have been investigated by DTA, DSC and visual polythermal methods....Phase diagrams and decomposition for systems of (C 2H 5) 2NH·HCl C 6H 10 O 4 (adipic acid) and (C 2H 5) 2NH·HCl C 10 H 18 O 4 (sebacic acid) have been investigated by DTA, DSC and visual polythermal methods. Both two systems are of the simple eutectic type. Eutectics are located in 50% of C 6H 10 O 4 at 94 ℃ and 55% of C 10 H 18 O 4 at 106 ℃ respectively. (C 2H 5) 2NH·HCl melts at 217 ℃ and decomposes as soon as it just melted. A polymorphic reaction of (C 2H 5) 2NH·HCl occurs at 98 ℃, the transition heat is 29.7 J/g. Experiments also revealed that adipic acid melts at 152.8—155.7 ℃ with melting heat 199.1 J/g, decomposes at 250.8—263.0 ℃ with decomposition heat 174.2 J/g; sebacic acid melts at 133.1—135.9 ℃ with melting heat 199.8 J/g and decomposes at 233.2—269.2 ℃, but no exact value of decomposition heat has been determined. [WT5HZ]展开更多
文摘The growth characteristic of intermetallics during the reaction of solid (Cu,Ag,Au,Fe,Co,Ni,etc) with liquid (Sn,Sb,Bi,Zn) within a very short time of 1～ 2 s at different temperatures has been studied by metallographic method for explaining the process in the fillet during soldering. It is indicated that the incongruent compourds often grow up as bamboo shoot form. But congruent compounds grow up basically just by spreading out as a layer along the solid border. Base on these facts,the influence of intermetallics in the fillet during soldering has been discussed.
文摘目的观察榄香烯乳联合顺铂对恶性胸腔积液患者的治疗作用。方法经影像学、细胞学检查、胸膜穿刺活检证实的恶性胸腔积液患者70例,经采用中心静脉管行胸腔引流术排尽胸腔积液后,随机分为2组,联合组(A组)35例,单药组(B组)35例,A组静脉滴注榄香烯乳联合顺铂胸腔注入治疗恶性胸腔积液,B组单纯顺铂胸腔注入治疗恶性胸腔积液。结果治疗结束时,①胸腔积液控制情况,治疗后A组有效率(90.3%)高于B组(46.9%),2组比较差异有统计学意义(P<0.05)。②生活质量,平均生活质量评分(karnofsky point system,KPS)A组较治疗前提高(P<0.05),B组无变化。③不良反应,2组消化道反应存在,胸膜反应、肾损害轻微,未见明显心、肝损害,差异均无统计学意义(P>0.05),而B组骨髓抑制较A组严重(P<0.01)。结论静脉滴注榄香烯乳联合顺铂胸腔注入治疗恶性胸腔积液疗效优于单纯顺铂胸腔注入,榄香烯乳可增加化疗药物的抗癌作用、减轻化疗不良反应。
文摘Phase diagrams and decomposition for systems of (C 2H 5) 2NH·HCl C 6H 10 O 4 (adipic acid) and (C 2H 5) 2NH·HCl C 10 H 18 O 4 (sebacic acid) have been investigated by DTA, DSC and visual polythermal methods. Both two systems are of the simple eutectic type. Eutectics are located in 50% of C 6H 10 O 4 at 94 ℃ and 55% of C 10 H 18 O 4 at 106 ℃ respectively. (C 2H 5) 2NH·HCl melts at 217 ℃ and decomposes as soon as it just melted. A polymorphic reaction of (C 2H 5) 2NH·HCl occurs at 98 ℃, the transition heat is 29.7 J/g. Experiments also revealed that adipic acid melts at 152.8—155.7 ℃ with melting heat 199.1 J/g, decomposes at 250.8—263.0 ℃ with decomposition heat 174.2 J/g; sebacic acid melts at 133.1—135.9 ℃ with melting heat 199.8 J/g and decomposes at 233.2—269.2 ℃, but no exact value of decomposition heat has been determined. [WT5HZ]
