4，4’－二（二乙氨基）－二苯硫酮分光光度法测定痕量铜

本文系统地研究了４,４’－二（二乙氨基）－二苯硫酮（ＢＤＰＴＫ）与铜（Ⅰ）的显色反应,在ＴｒｉｔｏｎＸ－１００增溶作用下,其摩尔吸光系数可达９．７４×１０６Ｌ·ｍｏｌ（－１）·ｃｍ（－１）。这是迄今发现的关于铜的最灵敏的显色反应。该反应的一个突出优点就是可以允许１０６倍的Ｎｉ存在。据此拟定了在水相直接测定痕量铜的分光光度法,并试用于高纯镍和血清样中痕量铜的测定,取得满意结果     

5-Br-PADAP-TritonX-100体系析相分光光度法测定矿石中痕量锰

２－（５－溴－２－吡啶偶氮）－５－二乙氨基苯酚（５－Ｂｒ－ＰＡＤＡＰ）是许多金属离子的高灵敏度显色剂［１］。有人曾用碘化物一碘－孔雀绿－苯体系吸光光度法测定痕量锰［２］,但因采用Ｍｎ（Ⅶ）氧化Ｉ－产生Ｉ３－,Ｉ３－与孔雀绿阳离子发生离子缔合反应。缔合物可被苯萃取,操作繁琐,且Ｍｎ（Ⅶ）氧化性较强,易氧化样品中一些还原性离子,因而难于控制。为了解决这一问题,并提高反应的选择性,我们试验了在表面活性剂存在下,析相光度法测定锰的可能性,发现在ＴｒｉｔｏｎＸ－１００存在下,于ｐＨ９．０的ＮＨ３·Ｈ２Ｏ－…     

新试剂3，5－二溴－4－氨基苯基荧光酮与锰（Ⅱ）的显色反应的研究及应用

研究了新显色剂３,５—二溴—４—氨基苯基荧光酮（ＤＢＡＰＦ）与锰（Ⅱ）的显色反应。在阳离子表面活性剂溴化十六烷基三甲铵（ＣＴＭＡＢ）存在下,ｐＨ９．０ＮＨ３·Ｈ２Ｏ－ＮＨ４Ｃｌ介质中,ＤＢＡＰＦ与Ｍｎ（Ⅱ）形成１∶２红色络合物,最大吸收波长５７５ｎｍ,表现摩尔吸光系数ε＝１．０５×１０５,猛（Ⅱ）的浓度在０－８．５μｇ／２５ｍｌ范围内符合比尔定律,拟定方法用于钢铁样品中微量锰的测定,结果满意。     

5－Br－PADAT分光光度法测定微量铂

本文研究了显色剂５－（５－溴－２－吡啶偶氮）－２,４－二氨基甲苯（５－Ｂｒ－ｐＡＤＡ）与铂（Ⅱ）的显色反应。在正丙醇存在下,在０．２￣１．０ｍｏｌ／ＬＨ＿３ＰＯ＿４介质,Ｈ飞介质中,放置３５ｍｉｎ,铂与５－Ｂｒ－ｐＡＤＡＴ形成稳定的１：１蓝紫色配合物,其最大吸收波长在６０２ｎｍ处,表现摩尔吸光系数为７．９×１Ｏ￣４·ｍｏｌ￣－１·ｃｍ￣－１．铂量在０～２５μｇ／２５５ｍｌ范围内符合比尔定律。应用本法测定了催化剂中微量的铂,结果满意。     

铂（Ⅳ）－硫代米酮－吐温－80显色反应的研究及应用

研究了在非离子表活性剂Ｔｗｅｅｎ－８０存在下,Ｐｔ与硫代米酮（ＴＭＫ）的显色反应,试验结果表明．在ｐＨ３．４３～３．３４的ＨＡｃ介质中,Ｐｔ与ＴＭＫ生成稳定的紫红色络合物。λｍａｘ＝５２５～５３０ｎｍ,摩尔吸光系数ε＝１．６×１０￣５Ｌ·ｍｏｌ￣（－１）·ｍｏｌ￣（－１）·ｃｍ￣（－１）,０～１０μｇＰｔ／１０ｍｌ服从比尔定律。     

1－（2－羟基－3－甲氧基苯甲醛缩氨基）－8－羟基－3，6－萘二磺酸的合成及其光度法测定硼的研究

本文研究了１－（２－羟基－３－甲氧基苯甲醛缩氨基）－８－羟基－３－,６－萘二磺酸的合成以及光度测定硼的方法。在乙酸－乙酸铁缓冲溶液中,硼与成剂形成１：２的黄色络合物,最大吸收波长在４２０ｎｍ处,摩尔吸光系数为７．１９×１０￣３Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）,Ｂ的Ｓａｎｄｅｌｌ灵敏度为０．００１５μｇ／ｃｍ￣２：。当硼量在０～３５μｇ／２５ｍｌ范围内符合比尔定律,应用于氧化镁中硼的测定获得满意结果。     

2－［2′－（6′－甲氧基－苯并噻唑）偶氮］－5－二甲氨基苯甲酸光度法连续测定铁和镍

研究了新试剂２－［２′－（６′－甲氧基－苯并噻唑）偶氮］－５－二甲氨基苯甲酸（ＭＯＢＴＡＭＢ）与Ｆｅ（Ⅱ）,Ｎｉ（Ⅱ）的显色反应。在混合表面活性剂（ＴｒｉｔｏｎＸ－１００－ＳＤＳ）存在下,于ｐＨ５．２的ＨＡｃ－ＮａＡｃ缓冲溶液中,Ｆｅ（Ⅱ）,Ｎｉ（Ⅱ）与ＭＯＢＴＡＭＢ反应均形成１：２的稳定络合物。前者最大吸收波长为６５１ｎｍ,后者最大吸收波长为６５８ｎｍ。选定６５６ｎｍ为测定波长,测得表观摩尔吸光系数分别为ε＿Ｆｅ－ＭＯＢＴＡＭＢ＝８．３×１０￣４,ε＿Ｎｉ－ＭＯＢＴＡＭＢ＝１．２９×１０￣５。铁浓度在０     

4，4＇－二偶氮苯重氮氨基偶氮苯与汞显色反应的研究及应用

研究了新显色剂４,４＇－二偶氮笨重氮氨基偶氮苯与汞（Ⅱ）的显色反应。在非离子表面活性剂ＯＰ存在下,于ｐＨ１０．０的Ｎａ＿２Ｂ＿４Ｏ＿７－ＮａＯＨ介质中,形成橙红色配合物,最大吸收波长５１５ｎｍ,表观摩尔吸光系数１．６×１０￣５Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）。汞的浓度在０～１４μｇ／２５ｍｌ范围符合比尔定律。研究了测定汞的各种条件和共存离子的影响。测定了工业废水和天然水中的微量汞,结果满意。     

铁（Ⅱ）－1－（2－吡啶偶氮）－2－萘酚－TritonX－100显色体系的研究及应用

本文研究了ＴｒｉｔｏｎＸ一１００存在下，铁（Ⅱ）与１－（２－吡啶偶氮）－２－萘酚（ＰＡＮ）的显色反应，在ＰＨ值３．０～９．０范围内，配合物的最大吸收波长为７４０ｎｍ，表现摩尔吸光系数ε＝１．６×１０￣４Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１），铁量在０～８０ｕｇ／２５ｍｌ范围内遵守比耳定律。该法用于纯铝、铝合金、铝基稀土合金中微量铁的测定，结果准确。     

锗（Ge）（Ⅳ）－P－CIPF－混合离子表面活化剂显色反应的研究和应用

本文研究了锗（Ⅳ）在混合离子表面活化剂（ＣＰＢ、ＴｒｉｔｏｎＸ－１００）存在下与Ｐ－ＣＩＰＦ形成多元配合物的显色特性。在１．５－４．０ｍｏｌ／ＬＨ＿２ＳＯ＿４介质中，Ｇｅ（Ⅳ）－Ｐ－ＣＩＰＦ－混合离子表面活化剂生成橙红色配合物，最大吸收波长（λ＿（ｍａｘ））位于５１５ｎｍ处，其摩尔吸光系数为ε＿（５１５）＝２．８×１０￣５Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）。配合物的组成比为Ｇｅ：ＣＩＰＦ＝１：３（在混合离子表面活化剂存在时）。在０－１２βμｇ／Ｇｅ５０ｍＬ范围内符合比尔定律。本法具有良好的选择性，完全不经分离或富集。已成功地用于直接测定人参、枸杞、当归、大蒜和锅炉烟尘中的微量锗。     

转炉炉壳热应力分析

根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。     

The effect of amount of possession of the trait of hostility on accuracy of perception of hostility in others.

Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comparison of rates of infection of two methods of emergency ventricular drainage

The rates of infection of two methods of external ventricular drainage in use at Atkinson Morley's Hospital--namely, (a) percutaneous drainage with Rickham reservoirs and (b) tunnelled ventriculostomies--were compared in this retrospective review. Percutaneous drainage of CSF with Rickham reservoirs was associated with a 27% rate of infection as identified by positive microbiological cultures; tunnelled ventriculostomy catheters had a 10% infection rate. The difference in the infection rate between the two methods was statistically significant (P < 0.015). Other variables examined, including the age and sex of the patients and the reasons for ventricular drainage, were not associated with an increased rate of infection. Most infections from either method were caused by a coagulase negative staphylococcus. The average duration of ventricular drainage before identification of positive cultures was 5.7 days for Rickham reservoirs and 6.0 days for ventriculostomies.     

浅析《野草》的版画特征

鲁迅先生一生热爱美术作品,对版画中木刻兴趣尤甚.<野草>作为其"写心之作",亦呈现出一些与木刻版画一致的审美特征:一是具有木刻版画的色彩特征,多对比、多冷色,有阴郁的美感;二是具有木刻版画的力度特征,环境描写、人物刻画处处刀锋毕现,遒劲有力,有一种"力之美".     

四辊破碎机车刀架的改造

针对四辊破碎机车刀架车削中存在的几个问题,详细介绍了电动车刀架的结构和工作原理,建立主要设计参数的数学表达式,并进行适当的分析。改造后,这种电动车刀架运行平稳、可靠、方便、省力,取得了预期的效果。     

焦炭热性能指标意义浅析

通过对焦炭在高炉内的历程及其变化规律的剖析,阐述焦炭热性能指标的意义,形象地把焦炭在高炉内的损耗分为三部分(M1,M2,M3)。指出M2对焦比及焦炭价格有一定的指导作用。     

Results of treatment of cancer of the cardia

Cancer of the cardia is traditionally discussed with cardiac cancer of the lower portion of the esophagus and upper gastric cancer invading the esophagus, and the specific characteristics of cancer of the cardia have never been clearly defined. We reviewed the outcome of 172 patients with adenocarcinoma of the cardia who had undergone radical surgery between 1949 and 1994 in the Division of Gastrointestinal Surgery of the Cancer Institute Hospital. The centers of the tumors were located within 2 cm above and below the boundary between the esophagus and the stomach, and their longitudinal diameter was less than 8 cm. We divided the patients into an early period (1949-1979; n = 79) and a late period (1980-1994; n = 93), and focused on the historical transition. There were no differences in patient gender or histology between the two periods. However, the late period was associated with fewer cases of esophageal invasion and shorter longitudinal diameter, as the age of the population advanced. The number of advanced cancers such as the localized and infiltrative type had decreased, and early cancer and early clinical stage had become more common, but despite the fact that the number of early cancers had increased, extended dissection, such as thoracic and paraaortic lymph node dissection, was performed more frequently. By clinical stage, the long-term outcome markedly improved in Stage I patient in the late period, and tended to improve in Stage II and III patients. This appears to have been attributable to the prevention of micrometastasis by extended dissection, although the number of early cancers is another major potential cause. There were no differences in the outcome of Stage IV patients between the two periods, and further advances in multimodality therapy must be awaited. The range of resection is basically proximal gastrectomy, and if there are adequate indications, the prognosis is favorable. In view of the status of lymphatic flow and lymph node metastasis, and long-term results, lateroaortic lymph node dissection is important. Since the number of early cancer patients has been increasing, if intraabdominal recurrence is prevented, intrathoracic lymph node dissection will contribute greatly to the outcome of such patients.     

Comparison of the results of surgical and conservative treatment of fractures of the diaphysis of the tibia

In this paper is treated the fundamental problematic of the fracture of the diaphysis of the tibia and the therapeutic results after the conservative and operative treatment are confronted. Among 518 patients with 433 open fractures and 35 with closed fractures of the diaphysis of the tibia, successful treatment of more 2/3 was obtained in the period from 1968 to 1972. Following our casuistics and literature, whose results are similar, we find out that the average total treatment of the osteosynthesis of the fracture of the diaphysis was shortened for 2,5 months depending upon the type and the localisation of the fracture. Apolied methods of the operative and conservative and conservative treatment in relation to the velocity of the medical cure as well as to the extreme anatomical-functional results are analised. We noticed that osteosynthesis, made by the intermedullary nail and the extension of the canals or by a small AO table, by the achieved stability makes conditions of immediate motions and an early rehabilitation. Because of that it gives the best functional results.