甲壳胺人工皮—CHIMEHERB治疗不同类型创面初步结果

本文报告了1989年1月至12月使用甲壳胺人工皮治疗94例不同类型创面,其中手部创伤66例,烧伤5例,其它创面17例。结果断层皮肤损伤愈合良好,小面积全层皮肤损伤愈合后有少量疤痕形成,在手外伤中,以指端损伤效果较好,采用此疗法,方法简单,易于推广。     

Friction Characteristics at the Pipe-Soil Interface

-In order to analyze the stability of pipelines on the sea bed, the friction characteristics at the pipe-soil interface were examined by means of special direct shear tests. High density polythene was used as the surface of the pipe, which is a widely-utilized material for the outer cover of the pipe to prevent sea water corrosion. Sands of different gradings were tested. The reconstituted soft clay taken from the Bohai area was consolidated to different degrees of consolidation by the vacuum preloading technique, and tested.     

Residential satisfaction and the propensity to move: an analysis of potential movers from marginal settlements in Costa Rica

The authors use 1974 survey data from three marginal communities in the city of Limon, Costa Rica, to examine the propensity of settlers in such communities to move voluntarily. In particular, the concept of residential satisifaction is examined and refined     

CO<Subscript>2</Subscript>-rich fluid inclusions with chalcopyrite daughter mineral from the Fenghuangshan Cu–Fe–Au deposit,China: implications for metal transport in vapor

CO₂-rich fluid inclusions containing opaque mineral crystals were found in the Fenghuangshan skarn-porphyry Cu–Fe–Au deposit in Tongling, Anhui, China. These inclusions show variable CO₂ contents and are accompanied by aqueous inclusions, both occurring as secondary inclusions in quartz and being locally associated with chalcopyrite mineralization. Laser Raman microspectroscopic analyses confirm the predominance of CO₂ in the vapor and the presence of H₂S as high as 8 mol%, and identify the opaque mineral with yellow reflectance color in the inclusions as chalcopyrite. More than half of the CO₂-bearing inclusions contains chalcopyrite, whereas few of the associated aqueous inclusions do so. The chalcopyrite, occupying less than 1% (volume) of the inclusions, is interpreted to be a daughter mineral, and calculated Cu concentrations in the inclusions range from 0.1 to 3.4 wt%. Copper is inferred to have been transported in CO₂-dominated fluids as HS⁻ complexes. The occurrence of chalcopyrite daughter crystals in CO₂-rich fluid inclusions indicates that CO₂-rich vapor has the capacity of transporting large amounts of Cu, and possibly Au. This finding has significant implications for metal transport and mineralization in hydrothermal systems enriched in CO₂, such as orogenic-type and granitic intrusion-related gold deposits.     

Performance studies on six heuristic global optimization methods in the location of critical slip surface

Recently, many heuristic global optimization algorithms have evolved with success for treating various types of problems. Majority of these algorithms have not been applied to slope stability problem for which the presence of soft band and convergence problem (discontinuity of the objective function) may create difficulties in the minimization process. In this paper, six heuristic optimization algorithms are applied to some simple and complicated slopes. The effectiveness and efficiency of these algorithms under different cases are evaluated, and it is found that no single method can outperform all the other methods under all cases, as different method has different behavior in different types of problems. For normal cases, the particle swarm method appears to be effective and efficient over various conditions, and this method is recommended to be used. For special cases where the objective function is highly discontinuous, the simulated annealing method appears to be a more stable solution.     

Seismic response control of a building complex utilizing passive friction damper: experimental investigation

Multi‐storey main buildings constructed with a low‐rise podium structure possess some architectural merits but the setback features of such a building complex may lead to seismic response enlargement of the main buildings. This paper explores the possibility of using passive friction dampers to connect the podium structure to the main buildings to prevent their seismic response enlargement without violating the architectural features. A series of shaking table tests were carried out on one 3‐storey and one 12‐storey building models in fully‐separated, rigidly connected, and friction damper‐linked configurations. Four sets of seismic ground motions were selected as inputs to the shaking table. The control competence of two buildings linked with friction damper was evaluated by comparison of their responses with those from fully‐separated and rigidly connected cases. Experimental results showed that unfavourable seismic response amplification did occur in the building complex in the rigidly connected case. By contrast, friction damper showed effectiveness in reducing absolute acceleration and interstorey drift responses of both buildings if friction force level was appropriately applied. Copyright © 2005 John Wiley & Sons, Ltd.     

VS型垂直摆倾斜仪标定计算程序

VS型垂直摆倾斜仪是新投入使用的一种地倾斜观测仪器，为提高其标定准确性，应用VB语言编程，进行自动取值计算，可方便快捷、准确地计算格值，提高地震观测资料的可靠性。     

台站环境实时监测的重要性及其作用

简要介绍在Adapt数字地震遥测台网系统中对台站环境因素进行实时监测的工作原理，分析和阐述了此模块功能在日常台网运行管理工作中的重要性及其主要作用。     

吉林省永胜霞石正长岩除铁试验研究

对吉林省永胜霞石正长岩进行磁选除铁试验,确定该岩体的合理选矿条件和最佳工艺流程,精矿产品的杂质含量,为我省霞石正长岩开发利用提供试验依据。     

地震前兆探测对观测技术要求的再思考

将地震前兆探测分为依赖地震孕育过程中漏能释放的第一类检测方法和不依赖漏能释放的第二类检测法二种,当前,除改进第一类方法外还应积极发展第二类前兆检测技术,根据地壳运动观测频域的高频端已建立测震台网,低频端正在建设ＧＰＳ密集台网,极重要的中频段台站稀少的现实,提出当前应积极建设定点形变观测密集台风,填补中频段的监测弱视盲区,同时定点形变观测仪器要打好基础,进一步提高观测精度和信噪比。