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材料成型及控制工程专业应用型本科人才培养方案的研究与实践 总被引:1,自引:0,他引:1
在对材料成型及控制工程专业应用型本科人才的培养目标及知识、能力、素质结构进行深入分析的基础上,构建了具有一定特色的人才培养方案,较好处理了拓宽口径与专业素质教育之间的关系,突出了专业特色.较为科学地解决了人才培养方案实施中的问题,人才培养质量提高. 相似文献
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Masahiko Ozaki Junichi Minamiura Yoshinori Kitajima Shuji Mizokami Kazuhisa Takeuchi Katsunori Hatakenaka 《Journal of Marine Science and Technology》2001,6(2):51-58
Ocean sequestration of the CO2 captured from fossil-fuel burning is a possible option to mitigate the increase in CO2 concentration in the atmosphere. It can isolate huge amounts of CO2 from the atmosphere for a long time at relatively low cost, if it is acceptable from the viewpoint of the environmental impact
on the ocean. The concept of CO2 dispersion in the ocean depths by ships is a promising method for efficient dilution. That is, liquefied CO2 is delivered to the site and injected into the ocean at depths of 1000–2500 m with a suspended pipe towed by a slowly moving
ship. In addition to the horizontal movement of the release point, the vertical journey of CO2 droplets until they disappear by dissolution is effective for the dilution of CO2 in seawater. In this paper, the possibility of the generation of relatively large-sized droplets from a moving nozzle is
investigated experimentally. In addition, the terminal velocity of CO2 droplets in deep-sea circumstances is measured in a large high-pressure tank to investigate the influence of the hydrate
film formed on the surface of the droplet. Finally, it is shown by simulation that an initial dilution ratio of one to some
ten thousandths is possible on a realistic engineering scale in the moving ship type of CO2 ocean sequestration.
Received: August 7, 2001 / Accepted: September 13, 2001 相似文献
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文章阐述了美国地铁、高速列车等轨道车辆的发展水平、动态,以及铁道车辆市场现状。介绍了美国针对铁路事故而开展提高车辆强度、抗碰撞能力的研究及取得的成果。 相似文献
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Massive trading data are produced in securities market every day. Besides, the amount of relevant social media data is also growing fast. It is a vital problem of making use of these data. Facing on the growing amount of data, using big data framework is a necessary and reasonable method. Then, a big data framework for quantitative trading system is proposed in this paper. In the framework, Apache Spark is chosen as the distributed computing framework to process trading data, and Apache HBase as the distributed database is used to store data. After introducing the whole framework, we discussed data sources and the structure of quantitative trading layer in detail. 相似文献
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Yoichi Sumi Hiroshi Yajima Masahiro Toyosada Takao Yoshikawa Shuji Aihara Koji Gotoh Yoshitaka Ogawa Toshiyuki Matsumoto Kazuhiro Hirota Hideyuki Hirasawa Masanobu Toyoda Yasushi Morikage 《Journal of Marine Science and Technology》2013,18(4):497-514
The rapid enlargement of the size of container ships has led to the application of extremely thick plate in the deck structures, which may grow concerns about the fracture toughness at the butt-weld with large amount of heat input, and the arrest toughness of brittle crack propagation in the base metal of such thick plates. Also, slam-induced whipping stresses might affect the fatigue crack propagation and the initiation of a brittle crack in a container ship. In order to prevent the catastrophic failure of deck structures by brittle fracture, national joint research projects, which focused on the safety-related issues of extremely thick steel plate applied to hull of large container ships, were formed from April 2007 to March 2011 organized by the Japan Ship Technology Research Association (JSTRA) supported by the Japanese Government in collaboration with universities, national research institute, classification societies and relevant industries including shipbuilding, steel manufacturing and shipping companies. The joint research projects have carried out the investigations on crack initiation toughness of the weld, fatigue crack propagation under seaway loading, the potential of defect detection by ultrasonic testing, and the crack-arrest methods after brittle crack propagation. Practical recommendations to prevent brittle fracture of large container ships were proposed based on these comprehensive investigations. The essential parts of the above research activities are presented in this paper. 相似文献
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Objective To create transgenic rabbits by microinjecting human apolipoprotein A-Ⅱ (apoA-Ⅱ) geneinto one-cell embryos, to study apoA-Ⅱ gene function on plasma lipoprotein metabolism and atherosclerosis. Methods Superovulation and synchronization of estrus were induced in female Japanese White Rabbits by injecting hormone,then mating with male. After collected the fertilized eggs, the human apoA-Ⅱ gene was microinjected into the male pronucleus of eggs. The injected eggs were transferred into recipient female rabbits. Last, extract DNA from the new borns ear and determine whether the newborns were transgenic by polymerase chain reaction (PCR) or Southern blot analysis. Results A total of 822 embryos with microinjection of human apoA-Ⅱ gene were implanted into 28 recipient rabbits. The number of surviving newborns was 37. 3 transgenic positive surviving founders were found with humanapoA-Ⅱ. 相似文献
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Takehiro Inoue Yoshiya Yamaguchi Hiroshi Yajima ShujiAihara Hitoshi Yoshinari Kazuhiro Hirota Masanobu Toyoda Takaaki Kiyosue Tsunehisa Handa Tomoya Kawabata Tokutaka Tani 《上海造船》2011,(1):72-79
对船用钢进行长裂纹止裂特性研究表明:它们的脆性裂纹止裂能力不够。TMCP钢有足够的脆性裂纹止裂能力。对船用钢进行了两种实尺(actual-scale)模型试验,明确了脆性裂纹扩展的条件。根据试验结果提出了止裂韧度值Kca,已经归纳在"脆性裂纹止裂设计指导性文件"中。 相似文献
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