芬太尼与舒芬太尼对发育期大脑术后早期认知功能恢复的影响

目的:观察芬太尼、舒芬太尼全麻对3岁前儿童术后早期认知功能变化的影响。方法:择期行先天性巨结肠根治术的患儿60例,随机分为芬太尼组(F组)及舒芬太尼组(SF组),每组30例,分别在术前、术后4,6,24 h及48 h对每位患儿采用中国婴幼儿能力测试智力验测表,按月龄进行相应年龄段的认知评分测试。结果:与术前相比,SF组患儿术后4,6 h认知功能评分下降(P<0.05),F组患儿术后4 h认知功能评分下降(P<0.05);与F组相比,SF组6,24 h的认知功能评分降低(P<0.05)。结论:芬太尼与舒芬太尼对发育期大脑认知功能均有一过性降低作用。

Clinical Observation on Acupuncture Treatment of Cerebrovascular Dementia——A Report of 32 Cases

Cerebrovascular dementia is a common disease in the middle-aged and old people. Its incidence makes up about 10-20% of all kinds of dementia. It is mainly caused by general degeneration of the brain function resulted from cerebral arteriosclerosis and cerebral infarction. The author has treated 32 cases of cerebrovascular dementia with acupuncture in the recent years with satisfactory therapeutic results. A report follows.

Hydrophilic characteristics of soft rock in deep mines

A series of water absorption tests on dried soft rock have been conducted by the intelligent testing system for water absorption tests in deep soft rock, including tests of water absorption with and without pres- sure. The results show that the water absorbing capacity of rock with a certain pressure is larger than that of rock without pressure： however, the relationship between the water absorbing percentage and the time can be expressed by w（t） = a（l - e^-bt）. In hi-logarithmic coordinates, the hydrophilic relationship with time in tests with pressure could be characterized by linearity, while they present concave or convex in tests without pressure. Based on the hypothesis that each influential factor is irrelevant and they have a linear correlation with the water absorbing capacity, we calculated the weight coefficient of each factor according to experimental results under different conditions. The calculations demonstrate that the effec- tive porosity, content of smectite and kaolinite are all positively correlated with the water absorption capacity of rock; meanwhile, the fractal dimension of the effective pores presents a negative correlation with the water absorption capacity of rock. The water absorption capacity with pressure increases with increasing illite, chlorite and chlorite/smectite formation and a decrease in illite/smectite formation and the fractal dimension of the effective pores, while it is opposite in tests without pressure. The weight coefficient of smectite is smallest among positive factors, and the fractal dimension of the effective pores is the smallest amongst the negative factors.

Experimental research on hydrophilic characteristics of natural soft rock at high stress state

In order to study features of rock–water interaction, a self-developed experimental system called Intelligent Testing System for Water Absorption in Deep Soft Rocks(ITSWADSR) was utilized to analyze the hydrophilic behaviors of natural soft rock at high stress state. Combining X-ray diffraction and mercury injection test, main influencing factors on hydrophilic characteristics were studied. According to the results, it could be concluded as the following:(1) the effective porosity, and the content of illite, illite/smectite formation(S = 5%) and kaolinite have positive correlation with the water absorption capacity of rock; meanwhile, the initial moisture content, fractal dimension of effective pores, illite/smectite formation(S = 30%) and chlorite present negative correlation;(2) among the positive factors, the ascending order is kaolinite, illite/smectite formation(S = 5%) and illite;(3) the descending order among the negative factors are chlorite, illite/smectite formation(S = 30%) and fractal dimension of the effective pores;(4) influence of effective porosity on the pressurized water absorbing capacity of rock is minimal, while it is maximal in the process of no pressurized water absorption.

Rolling force prediction for strip casting using theoretical model and artificial intelligence

Rolling force for strip casting of 1Cr17 ferritic stainless steel was predicted using theoretical model and artificial intelligence.Solution zone was classified into two parts by kiss point position during casting strip.Navier-Stokes equation in fluid mechanics and stream function were introduced to analyze the rheological property of liquid zone and mushy zone,and deduce the analytic equation of unit compression stress distribution.The traditional hot rolling model was still used in the solid zone.Neural networks based on feedforward training algorithm in Bayesian regularization were introduced to build model for kiss point position.The results show that calculation accuracy for verification data of 94.67% is in the range of ±7.0%,which indicates that the predicting accuracy of this model is very high.

Measuring Audit Firms＇ Intellectual Capital as a Determinant of Audit Quality： A Suggested Model

The intellectual capital is a main source of competing advantage. Many studies developed measure（s） of intellectual capital of industrial and service firms. Few studies have tried to develop a reliable measure of intellectual capital in audit firms. This study extends the current models to provide more insight into the role of intellectual capital in audit firms. The aim of this study is to develop a quantitative model to measure audit firms＇ intellectual capital. The suggested model can be used to explore the relationship between the intellectual capital in audit firms and audit quality. The model combines the main components of intellectual capital （human capital, structural capital, and relational capital）. The suggested model provides a tool that may help to better manage the intellectual capital in audit firms. As this is a theoretical study, a number of hypotheses are presented for testing in the future.

胖孩子记忆力思考力下降快

随着人们生活水平的提高,肥胖对于人们来说已经成为一个不可忽视的社会问题。英国伦敦大学学院的一份研究表明,那些患有如高血压、高胆固醇等健康问题的胖子和那些一般的胖子,比起瘦子来说,他们的记忆力和脑力下降速度要快四分之一。