A univentricular assistant artificial heart was applied to the experiment goat, which survived for 11 days and 23 hours. During the period of survival, the parameters such as E.C.G., central venous blood pressure, respiration and temperature appeared to be essentially normal. The necessary amount of blood flow was well regulated by the pump. The driving system worked continuously, smoothly and reliably for 11 days. Postmortem patho-anatomy revealed that the chief cause of the animal’s death was acute renal failure as a result of widespread multiple embolism of renal arteries.
The successful launching of China’s first experimental communication satellite, which was propelled by a three-stage rocket and has been in operation ever since, indicates that our nation has entered a new stage in the development of carrier rockets and electronics.
When a graphite crystal is crushed, it breaks into micro-scaled laminar flakes. There are many dangling bonds on the edge of an isolated graphite micro-sheet which elevates its energy and makes it unstable. When a graphite micro-sheet curls into a nanotube, the number of dangling bonds decreases, and the system energy is reduced accordingly.
Tongue diagnosis is an important diagnostic method in traditional Chinese medicine. However, one important problem in tongue diagnosis is that its practice is subjective, qualitative and difficult in automated diagnosis. Recently it is a trend to utilize the image processing and pattern recognition technology in aid of the quantitative analysis of tongue image.
First, clamp the belly part between you right-hand fore and middle fingers, press the thumb against the bottom so that the air jar becomes concave; then lay the jar mouth on the part of the body to be cupped. Second, fix the jar mouth with the left-hand thumb and forefinger, then move the right-hand thumb and forefinger to squeeze the belly part so that the bottom of the jar becomes convex. Once the belly part is concave the jar is cupped tightly.
关键词：单晶硅 铜 沉淀
Abstract: Scanning infrared microscopy (SIRM), scanning election microscopy (SEM), and electron beam induced current (EBIC) are used to investigate the precipitation behavior of copper in as-grown Czochralski silicon. Copper-precipitate colonies could be observed through SIRM only in the specimens that experienced annealing at temperatures greater than 800°C. These results indicate that the copper precipitation temperature in the as-grown Czochralski silicon is approximately 800°C. In addition, SIRM and EBIC images show that tiny copper-precipitate colonies with high density formed in the specimens under air-cooling (30K/s), while large star-like colonies with how density generated in the specimens under slow cooling (0.3K/s). Furthermore, the recombination ability of the tiny copper-precipitate colonies. Finally, the mechanism of copper precipitation in as-grown Czochralski silicon is discussed.
Key words: silicon copper precipitation
关键词:PS条件 翻山引理 最佳嵌入常数 双调和方程
Abstract: With the help of the Mountain-Pass Theorem lacking Palais-Smale compactness condition ((PS)c condition) and by adoption of the best attained function of Sobolev embedding, the paper proves the existence of nontrivial solutions of two classes of critical biharmonic equations on boundary conditions by overcoming serial difficulties caused by loss of compactness due to Sobolev embedding.
Key words: (PS)c condition Mountain-Pass Theorem Best Embedding Constance Biharmonic Equations
关键词：客车车身设计 有限元分析 内饰设计 色彩设计
Abstract: The body design is of great important in bus design. On the basis of comparing traditional and modern design methods, the authors of this paper illustrate the research they have made on the integrated design method of body design which satisfies the requirements of the modern design method. This research helps to increase the relativity of different design phases for the realization of good cooperative design.
Key words: modeling of bus body finite element analysis interior ornament color design
24.摘要：将定性和模糊性评价合理地转化为定量评价，进而选择最优设计解，是产品创新设计过程中重要的一步。论文运用模糊综合评判与比较的方法，以Microsoft Visual Basic 5.0为软件平台，建立了一个计算机辅助的设计方案择优系统。该系统提供了对产品设计方案进行定量评价和择优，以及对择优结果存档、调用和打印等功能。
关键词：产品创新设计 方案择优 模糊综合评判
Abstract: It is a very important procedure of product design to transform rationally fuzzy and qualitative evaluation into quantitative evaluation for optimum solution. This paper introduces a computer-aided selection system for optimum solution to product design. The system is established on the platform of Microsoft Visual Basic 5.0 with the method of fuzzy comprehensive judgment and comparison. It has the functions of quantitative evaluation, selection of the optimum design solution, filling, consulting and printing of the optimized results.
Key words: innovative product design selection of optimum solution fuzzy comprehensive judgment
Abstract: The CuInSe 2(CIS) films were fabricated by selenization of evaporated metallic precursors and vacuum evaporation of stacked elemental layers(SEL) followed by a thermal annealing step. The morphology, microstructure and composition of the films were investigated by scanning electron microscopy(SEM), X-ray diffraction(XRD) and energy dispersive X-ray spectroscopy(EDX). The results show that these two thin films are both compact and uniform. The grain sizes of the two kinds of films are 1.5 μm and 1.0 μm, respectively.All the films made by the two methods are Cu-rich and show p-type conduction. However, the CIS thin films fabricated by the former method consist of a single phase of chalcopyrite structure, while those films fabricated by the later method contain impurity phases such as β-In 2Se 3 besides CIS phase. Thus the former method is better for fabricating the CIS absorber in solar cells.
Mix Selection refers to selecting and re-selecting fine plants in the fields or seed plots each year according to a definite economic purpose. Those undesirable are eliminated, the remaining fine plants are threshed together, stored together and their seeds are sowed together. Comparisons are made between the mixed fine plants and the standard ones. With such a treatment in several successive years, fine types of plants in uniform properties and shape can be selected from the mixed groups.
Scientists have developed a slimming drug that successfully suppresses appetite and results in a dramatic loss of weight without any apparent ill effects. The drug interferes with appetite control and prevents the build-up of fatty tissue. Laboratory mice given the drug lost up to a third of their total body weight. Within 20 minutes of being given the drug, called C75, the mice lost interest in eating and survived apparently content on just 10 percent of the food they would normally eat. More importantly, the drug appears to prevent a serious decline in metabolic rate—causing tiredness and lethargy—which is typically associated with living on a starvation diet. As a result, mice taking the drug lost 45 percent more weight than mice fed the same amount of food, which compensate for the lack of food by becoming more sluggish. The scientists believe that C75, which they produced synthetically in the laboratory, binds to an enzyme called fatty acid synthase, which is involved in storing excess food in take as fat. Inhibiting the enzyme caused a build-up of a chemical in the liver which acts as a precursor to fat deposition. This precursor is thought to have an indirect effect on the brain, causing appetite suppression. Normally, when animals fast, a hormone called neuropeptide Y increases sharply in the appetite-control centers of the brain, stimulating the desire for food. However, when animals are given C75, levels of this hormone fall, leading to a loss of interest in food.
This Vibration Damping Mount can keep sensitive analytical balances and other instruments from disturbing vibrations so that they work more accurately. It reduces to 9Hz the vibrations caused by nearby pumps, blenders, stirrers, and heavy-weight automobiles. It is made of black and white terrazzo with a polished surface that resists scratches and chemicals and supported by four Vibro-Absorbers with neoprene feet. With an overall height of 76mm, it can carry a weight up to 16kg.
29.摘要：本文介绍了高炉铜冷却壁(blast furnace wall with copper stave)的一种监控方法，实现了对铜冷却壁炉墙热面温度和渣皮(slag)厚度进行监控和高炉炉墙内型的可视化。从实践的角度证明了铜冷却壁炉墙监控的必要性，给出了本监控方法的实现思路，在对铜冷却壁前段渣皮进行监控过程中发现：通过监控可以在操作过程中防止铜冷却壁裸露、结瘤(wall accreditons)等异常发生;通过调整高炉操作维持适当厚度的渣皮，能实现高炉长寿和高效的结合，最优化高炉操作和最大化高炉生产。
Abstract: A monitoring method for blast furnace copper stave is introduced in this paper. Monitoring for heating surface temperature of copper stave wall and slag thickness was realized and internal profile of blast furnace wall was visible. Practice proves that monitoring of blast furnace wall with copper stave is necessary. Realization idea of the monitoring method is presented. The monitoring results show that monitoring in operation process can prevent abnormalities happened such as copper stave naked status, wall accretions and so on. Through regulation of blast furnace operation and keeping a proper thickness of slag, long campaign and high productivity as well as optimizing operation and maximum production of blast furnace can be realized.
Abstract: The occurrence of adverse drug events is recognized as an important health care issue. This paper provides a review of the computer information systems that have been developed and used for the prevention of ADEs. Following an introductory section that defines concepts and terms, the clinical manifestations, influences, and costs of ADEs are reviewed, along with the medication classes, types, and causes of ADEs. Information systems that target different stages of the drug ordering and delivery process are discussed. Different studies show that computerized physician order entry systems are essential in the prevention of ADEs. Computer-assisted decision support programs that are integrated with systems that cover each stage of the drug ordering and delivery process provide the most powerful prevention tools. Through comparison with other methods, computer-based information systems are shown to be the most cost-effective and promising strategy for preventing ADEs. Further challenges and possible improvements are also discussed.