项目经理负责制在设计单位推广初探

论文对我国社会主义市场经济形势下设计单位管理现状进行了分析,对在设计单位推广项目经理负责制的设计组织形式、项目经理的职责及如何发挥项目经理的作用等方面进行了初步探讨。     

Detection and quantification of endolymphatic hydrops in the guinea pig cochlea by magnetic resonance microscopy

The experiments carried out on the model of immobilization stress permit establishing the antiulcer effect of preventive introduction of sodium succinate solution, milk serum solution and solution of milk serum with sodium succinate. A decrease in the degree and number of ulcers and in the integrative indices characterizing the ulcer process after introduction of the studied drugs was accompanied by a fall of the intensity of lipid peroxidation processes.     

双机械臂协调：以运动学为基础的模型分析与动态补偿控制方法

本文建立了双机械臂协调系统的主从式控制的非结构模型，并针对两臂具有相同特性和不同特性这两种情形作了稳定性分析，提出特性校正的方法，本文还利用内模原理设计出动态补偿器来克服标定约束的不确定性对系统控制品质的影响，最后给出了实验结果。     

CHARACTERIZATION OF PROTEINASE RECOVERED FROM PACIFIC WHITING SURIMI WASH WATER

Pacific whiting surimi wash water (SWW) proteinase was recovered by ohmic heating, ultrafiltration, and freeze-drying. By these processes, 5.9-fold purification was achieved. The most efficient step was ohmic heating, which concentrated the proteinase by 4.8 fold. Specific activity of the recovered SWW proteinase on casein and Z-Phe-Arg-NMec was 28.2 and 0.17 U/mg protein, respectively. The SWW proteinase showed good hydrolytic activity towards casein, acid-denatured hemoglobin and myofibrils. Acidification increased specific activity on all substrates tested but reduced thermal stability. β-Mercaptoethanol, dithiothreitol and urea enhanced activity against Z-Phe-Arg-NMec. Proteinase activity on Z-Phe-Arg-NMec showed an optimum pH of 4.0. The recovered proteinase showed 18.5% residual activity after 7 week storage at 4C.     

Intraperitoneal rupture of ectopic varices--a rare complication of portal hypertension

A 50 year old man presented with sudden abdominal pain, abdominal distension and shock. At emergency laparotomy a large amount of blood was found in the peritoneal cavity. There was micronodular cirrhosis of the liver and the spleen was enlarged. The bleeding was traced to distended veins in the right paracolic gutter which were oversewn and the abdomen closed. A coagulopathy was diagnosed and treatment including high dose aprotinin commenced. However, he continued to bleed and at a second laparotomy the area of previous haemorrhage was packed. Further deterioration continued until death 12 hours later. Intraperitoneal haemorrhage from ectopic varices is a rare occurrence. There is a high mortality rate usually due to an advanced coagulopathy. This is the first report of aprotinin being used in an attempt to treat this. On the basis of this report aprotinin would not seem to be of benefit for this condition.     

Effect of prolonged high-temperature loading on the structure of the KhN65VMTYu alloy

A complex analysis of changes in the structure and in the phase composition arising as a result of both a prolonged operation of articles made of the alloy KhN65VMTYu (EI893) and after conducting imitation tests of model samples. The tests for long-term strength using samples cut out from the body of a large-dimension turbine blade which was exploited for 63 622 h showed that the blade preserved a significant residual reserve of service life (at 750°C and 250 MPa, the time to failure is 4243.5 h).     

水库调水调沙回顾与展望--兼论小浪底水库运用方式研究

作者简要回顾了三门峡、恒山水库调度方式和小浪底工程设计、“八五”攻关和专题研究之运用方式以及碛口、三门峡、小浪底水库联合调度方式等。提出小浪底水库调度应坚持“多年调节泥沙 ,相机排沙”运用方式 ;调控库容应大一些 ,同时要有灵活性 ;充分利用天然大水过程排沙 ,必要时也可相机造峰 ;注重水库联合调水调沙运用及有关技术问题研究