Medical imaging research on idiopathic hemifacial spasm

In order to have a medical imaging examination for idiopathic hemifacial spasm before surgery, we designed a new method by using vertebroarterial DSA and vertebroarterial CTA based on an aired cisternapontis, 36 patients were examined since 1989 and the compression of the facial nerve from brain stem to porus acousticus internus was showed clearly in all the cases. The arteries responsible for the compression were cerebellar inferior posterior (55.6%), cerebellar inferior anterior (44.4%), auditory internus (25.0%) and vertebroarterial (11.1%), 36% of all the cases had more than one responsible arteries, 22.2% cases had only one compression point, 38.9% had two points, 25.0% had 3 and 13.9% had more. 85.7% of the compression points located in the root zone and 14.3% near the porus acousticus internus. 24 cases were treated with decompression surgery, it indicated that the compression conditions just met the medical imaging examinationg results. After surgery the symptom disappeared in 23 cases and remarkably released in one case with no death case. We believed that this method might be helpful to idiopathic hemifacial spasm decompression surgery and other surgeries in the CP angle.     

Construction and utilization of rock caverns in Singapore Part D: Two proposed cavern schemes

This paper considers cavern schemes for crude oil storage and warehouse-shelter facilities. The crude oil storage scheme, which consists of five caverns, provides a net storage capacity for crude oil of 800,000 m³; the total cost for the facility, including civil construction, mechanical and electrical instrumentation, is in the order of S$80–100 million. The warehouse-shelter scheme consists of five storage caverns with combined storage capacity of 210,000 m³, and a defence shelter with capacity of 2000 persons. The cost for the warehouse-shelter scheme is S$66 million, including all mechanical and electrical utilities, systems for ventilation, fire prevention and smoke extraction, and pump installations for discharging leakage water.     

Nd：碲酸盐玻璃的光谱和激光性质

对比了各种激光玻璃的光谱性质，指出碲酸盐玻璃是一咱理想的激光介质，并资产在室温下实现了钛宝石激光器泵浦了Ｎｄ：碲酸盐块体玻璃的激光发射，激光阈值４．２０ｍＪ，斜率效率１４．７％。     

环件轧制中晶粒变化的计算机模拟

金属微观结构变化影响产品机械性能。本文将金属再结晶数学模型与三维热刚塑性有限元结合起来进行模拟计算，获得了环件轧制中晶粒变化的三维分布规律，及与以往不同的轧制力和力矩变化。所用方法有普遍适用性。     

COIL中BHP浓度对发生O_2(~1△)的影响

本文实验研究了BHP的浓度对产生O2（1△）的影响。实验结果表明：当BHP浓度大于3.5M时，Cl2利用率以及O2（1△）的产率将不依赖于BHP浓度的变化而变化，同时，实验结果表明，使用低浓度的BHP对COIL的操作是可行的。     

科学决策精心管理建好汾河二库

山西省是水问题非常突出的省份，充分利用水资源并消除水患，修建汾河二库是必要的，汾河二库总库容１．３３亿ｍ＾３，大坝碾压混土重力坝。二库建成后，其效益是多方面的，主要表现为：（１）防洪效益；（２）供水效益；（３）改善环境及利于养业，在设计中，对库区渗漏坝选择，基建面的确定，坝体布置，ＲＣＣ施工方法及防渗等技术问题，进行了重点研究，此外，对汾河二库工程建设的主要特点，即干旱气候条件下大仓面，全碾压，高     

非晶硅基薄膜的等离子体刻蚀光发射谱检测

本文研究了采用锁定放大相干检测技术的等离子体光发射谱检测系统。用该系统检测了仅用CF4作为刻蚀气体刻蚀非晶硅基薄膜的等离子体光发射谱。分析了检测结果和刻蚀机理。     

精轧油膜轴承密封失效机理的初步分析

对油膜轴承密封出现的进水、漏油现象作了大量的调查、测量和统计分析，找出了产生质量事故的根本原因，提出了解决措施。     

Direct measurement of single-molecule diffusion and photodecomposition in free solution

Continuous monitoring of submillisecond free-solution dynamics of individual rhodamine-6G molecules and 30-base single-stranded DNA tagged with rhodamine was achieved. Fluorescence images were recorded from the same set of isolated molecules excited either through the evanescent field at the quartz-liquid interface or as a thin layer of solution defined by micron-sized wires, giving diffraction-limited resolution of inter-connected attoliter volume elements. The single-molecule diffusion coefficients were smaller and the unimolecular photodecomposition lifetimes were longer for the dye-DNA covalent complex as compared with those of the dye molecule itself. Unlike bulk studies, stochastic behavior was found for individual molecules of each type, and smaller diffusion coefficients were observed.     

Extraction of halide quaternary salts in an organic solvent/water system: Hydrodynamics and mass transfer

The hydrodynamic characteristics and mass transfers of halide quaternary salts between two immiscible phases in a stirred membrane permeation cell were investigated. The concentration of quaternary salt, temperature, solvent and the four kinds of halide quaternary salts were evaluated to achieve the extractive optimum condition. The diffusivity, overall mass‐transfer coefficients and individual mass‐transfer coefficients were determined and correlated in terms of the conventional Sh‐Re‐Sc relationship. The transfer time of quaternary salts across the membrane and the thickness of the hydrodynamic diffusion boundary layer were determined as well, so as to characterize the extractive phenomenon of quaternary salts between the two phases that is useful in phase‐transfer catalysis.