轻型井点降水法在工程中的应用

介绍了轻型井点降水的施工工艺,特点,以及井点降水施工方案的选择和设备的选型,强调了在实际应用过程中的注意事项.     

Replication of liner collapse phenomenon observed in hyperbaric type IV hydrogen storage vessel by explosive decompression experiments

An experimental design based on representative sample is described in order to reproduce the detachment and deformation of the inner polymer layer (called liner) of hyperbaric hydrogen storage vessels during the emptying step. It is the first step of a better understanding of the mechanisms involved in the creation of a liner collapse. Results showed that a hydraulic testing machine fitted with a pressure hydrogen chamber enables to create a liner collapse on small samples by explosive decompression experiments. Tomographic observations have revealed that the collapse appears at the polymer liner/composite interface in areas that are not sufficiently bonded, nor consistently. Determination of liner collapse amplitudes, assessed by tomography, has underlined that, under some specific conditions, the deformation of the liner is permanent even when hydrogen has completely desorbed from the sample. In addition to liner collapses, composite cracks were also highlighted.     

巴喀致密砂岩气藏气井完井管柱设计与应用

致密砂岩气藏作为一种非常规气藏,储层具有岩性致密、低孔低渗、自然产能低等特征,如何有效开发这类气藏,是石油工程人员普遍关注的问题。本文以吐哈盆地台北凹陷柯柯亚构造带巴喀油田下侏罗统三工河及八道湾组致密砂岩气藏的开发为例,研究设计了具有气举排液、测试、生产为一体的完井管柱,对气藏的高效开发具有重要的研究意义。     

脉冲电絮凝法处理乳化液废水的实验研究

阐述了采用脉冲电絮凝的方法处理线切割乳化液废水的原理,按正交试验法安排废水处理试验,对试验数据进行回归分析,求得废水处理后COD值的回归方程,由此分析了废水处理工艺参数对COD值的影响,求得使COD值最小的废水处理的工艺参数值,并进行了实验验证。结果说明,采用脉冲电絮凝法处理线切割乳化液废水的效果很好,COD去除率高达90%。     

锆与铪分离技术的研究现状及应用前景

锆铪分离技术大体分为火法分离和湿法分离，着重介绍了湿法分离的溶剂萃取法中甲基异丁酮－硫氰酸法，三辛胺法，磷酸三丁酯法和改进的N235－H2SO4法，锆铪主要在核能工业上应用，锆铪工业的发展与核能工业紧密关联，加强锆与铪分离工艺的研究，对发展锆铪材料的生产和促进我国核电和国防工业的发展具有重要的战略意义。     

计算机辅助工业设计（CAID）技术研究与展望

工业设计人为一种新的产品设计的观念与方法，不仅已成为市场竞争的重要手段，同时也成为整个国家与国民经济发展的有力武器。工业设计使人的需求现实化与技术人性化有机结合，成为技术成果转化的桥染。本文论述了计算机辅助工业设计（Computer Aided Industrial Design-CAID)的基本内涵，技术研究现状及其发展趋势，阐明了CAID将使工业设计朝着多元化，优化，一体化的方向发展，使人机交互方式更加自然，创新设计的手段更为先进，有效。     

Fermentation by Amylolytic Lactic Acid Bacteria and Consequences for Starch Digestibility of Plantain, Breadfruit, and Sweet Potato Flours

The potential of tropical starchy plants such as plantain (Musa paradisiaca), breadfruit (Artocarpus communis), and sweet potato (Ipomoea batatas) for the development of new fermented foods was investigated by exploiting the capacity of some lactic acid bacteria to hydrolyze starch. The amylolytic lactic acid bacteria (ALAB) Lactobacillus plantarum A6 and Lactobacillus fermentum Ogi E1 were able to change the consistency of thick sticky gelatinized slurries of these starchy fruits and tubers into semiliquid to liquid products. Consequently, a decrease in apparent viscosity and an increase in Bostwick flow were observed. These changes and the production of maltooligosaccharides confirmed starch hydrolysis. Sucrose in sweet potato was not fermented by strain A6 and poorly fermented by strain Ogi E1, suggesting possible inhibition of sucrose fermentation. In all 3 starchy plants, rapidly digestible starch (RDS) was higher than slowly digestible starch (SDS) and resistant starch (RS) represented between 17% and 30% dry matter (DM). The digestibility of plantain was not affected by fermentation, whereas the RDS content of breadfruit and sweet potato decreased and the RS content increased after fermentation. Practical Application: The characteristics resulting from different combinations of gluten free starchy plants (plantain, breadfruit, sweet potato) and amylolytic lactic acid bacteria (ALAB) offer opportunities to develop new functional fermented beverages, mainly for breadfruit and sweet potato, after further investigation of their formulation, sensory attributes, nutritional, and prebiotic characteristics.     

Intergranular Oxidation of Nickel-Base Alloys: Potentialities of Focused Ion Beam Tomography

Oxidation of Metals - The present work focuses on the intergranular oxidation of Alloy 600 and its weld material Alloy 82 after exposure in simulated primary water at 340–360 °C...     

改良溶栓方案治疗静脉窦血栓形成

目的探讨改良溶栓方案（最低静脉窦内微量持续泵点尿激酶１０万u／２４h）治疗脑静脉窦血栓形成的疗效和安全性。方法对２１例患者（合并出血性梗死５例，其中病史超过１个月２例，超过３个月１例）进行机械性破栓、静脉窦内留置微导管行最低量尿激酶１０万u／２４h静脉窦直接泵点滴４８～９６h治疗。术后积极治疗原发病，抗凝治疗６个月。术后随访６～１２个月，平均１０个月。结果２１例脑静脉窦血栓形成患者，脑静脉窦均获得再通（其中１２例患者应用尿激酶１０万u／２４h效果良好，９例患者在应用尿激酶１０万u／２４h，４８h复查后增量至２５万u／２４h），无一例并发或加重脑出血，预后良好。结论改良溶栓方案可有效治疗脑静脉窦血栓形成，有效规避了大量应用溶栓药物的问题，在达到同样疗效情况下更为安全。     

旋挤法加工翻边孔工艺

旋挤加工法是利用一种特殊旋挤头作高速旋转，使工件材料发生热塑性变形面直接形成翻边孔的无切屑加工。文中叙述旋挤法加工翻边孔的成形过程中旋挤头轴向压力、变形区温度的变化以及翻边孔成形后工件材料组织与性能的变化等。