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Search Results: 1 - 10 of 91069 matches for " 周昊 "
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从同里看江南古镇保护与发展模式

工业建筑 , 2007, DOI: 10.13204/j.gyjz200704029
Abstract: 以著名江南水乡——同里古镇为例,结合江苏省吴江市同里镇总体规划(2002~2020年),借鉴国内专家关于江南古镇保护与规划若干问题的研究,并参考民意调查意见,从探索江南水乡保护与发展的实际状况出发,希望寻求到与时代同步,在传统与现代中和谐、统一的江南古镇保护与发展的平衡点。
试论我国工业建筑改造中的主要问题及其对策

工业建筑 , 2009, DOI: 10.13204/j.gyjz200908011
Abstract: 以中国现代化进程较快的城市上海为例,从城市层面和大众视角力求对旧工业建筑,特别是旧厂房改造问题进行剖析,从旧工业建筑改造的实际状况出发,探索有效的,适合国内工业建筑改造问题的应对措施,提升现有旧工业建筑物的综合价值。
银杏叶总黄酮的负压沸腾提取工艺

东北林业大学学报 , 2015,
Abstract:
高静压协同酶法处理对白果蛋白抗原性的影响

- , 2016, DOI: 10.13982/j.mfst.1673-9078.2016.8.033
Abstract: 本文研究了高静压结合酶解处理对白果蛋白抗原性的影响,分别采用4种蛋白酶水解白果蛋白,水解前分别采用不同压力的高静压对白果蛋白进行预处理,酶解产物水解率和分子量采用OPA法和SDS-PAGE测定,致敏性采用western-blotting和ELISA法测定。结果表明,木瓜蛋白酶,碱性蛋白酶或胃蛋白酶为水解酶时,高静压能显著提高白果蛋白的水解率和降低其致敏性;而中性蛋白酶为水解酶时,白果蛋白的水解和脱敏效果很差,即使高压处理也未见明显提高。木瓜蛋白酶或碱性蛋白酶在处理压力为300 MPa时,而胃蛋白酶在400 MPa时,其水解和脱敏效果最好,在此条件下白果蛋白能被水解为分子量小于15 ku的多肽,95%以上的白果蛋白致敏性能被消除,酶解产物中致敏蛋白条带全部消失。因此,高静压处理能明显提高蛋白酶对白果蛋白的水解效率和脱敏效果,但是取决于选择的蛋白酶种类和处理压力的大小。
The purpose of this paper was to study the combined effect of high hydrostatic pressure (HHP) and enzymatic hydrolysis treatments on the allergenicity of ginkgo seed proteins (GSP). Four food-grade proteases (papain, alcalase, pepsin, and neutrase) were used to hydrolyze GSP after pre-treatment with HHP (200, 300, or 400 MPa). The extent of hydrolysis and molecular weights of the hydrolysates were measured by the o-phthaldialdehyde (OPA) method and sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE), and the allergenicity was assessed by western blotting and enzyme-linked immunosorbent assay (ELISA). The results showed that HHP could significantly improve the extent of proteolysis and reduce the antigenicity of GSP when the hydrolase was papain, alcalase, or pepsin, whereas neutrase showed a low degree of proteolysis and poor anti-allergenicity on GSP, and no significant improvement was observed upon high-pressure treatment. The highest degree of proteolysis and the optimal anti-allergenicity were obtained with papain or alcalase hydrolysis combined with HHPtreatment at 300 MPa or with pepsin hydrolysis combined with HHP treatment at 400 MPa. Under the above conditions, GSP could be hydrolyzed into polypeptides with molecular weights lower than 15 ku, the antigenicity was reduced over 95%, and all immunoreactive bands disappeared in the hydrolysates obtained. These results suggest that HHP can improve the degree of hydrolysis of GSP and reduce the residual antigenicity of hydrolysates, but the effects are dependent on the protease used and the magnitude of processing pressure.
能力成熟度模型中需求管理的实践

武汉理工大学学报 , 2007,
Abstract: ?作为软件工程的一个重要领域,软件需求管理一直受到人们重视。首先介绍了cmm框架和cmm中的需求管理关键过程域,然后较详细介绍了需求确认、需求跟踪、需求变更活动。最后,阐述了需求管理的重要性和必要性。
引汉济渭工程受水区供用水过程分析
Study on the Water Supply and Water Use Processes in the Benefited Areas in Water Diversion from Han River to Wei River Project
 [PDF]

邵薇薇, 刘家宏, 徐鹤, 牛存稳, ,
Journal of Water Resources Research (JWRR) , 2013, DOI: 10.12677/JWRR.2013.25047
Abstract: 引汉济渭工程是陕西省为了解决关中地区缺水问题而规划建设的跨流域调水骨干工程。本文在社会经济发展分析基础上,对受水区水量需求结构进行了分析;并以旬为时间单位,对受水区生活、生产等用水过程进行了分析。在1955年至2007年系列年供水区可调水量及其它当地水源供水量基础上,对受水区供水过程进行了分析。由分析可知,为协调供水与用水过程不匹配问题,建设引汉济渭配套的调蓄工程成为必然选择。
Water Diversion from Han River to Wei River Project is an important water diversion project constructed to solve the shortage of water resources in the Guanzhong Area of Shannxi Province. This study analyzes the water resources demand structure of the benefited areas based on the analysis of social and economic development. Taking a period of ten days as the time scale, this study analyzes the water use process including the domestic water use and production water use. Based on the time series from 1955 to 2007, this study analyzes the water supply process, the water diversion quantity and regional water supply. It is known from this study that a regulation project as a supplement of the water diversion project is necessary to coordinate the processes of water supply and water use in the benefited areas in water diversion from Han River to Wei River Project.

中国土地一级市场中农地非农化制度之初探:财产权的观点
Preliminary Exploration of China’s Farmland Conversion in the Primary Land Market: A Property Rights Approach
 [PDF]

赖世刚,, 铭宏
Urbanization and Land Use (ULU) , 2014, DOI: 10.12677/ULU.2014.21002
Abstract: 中国自2007101日起实行物权法与2008年第十七届三中全会施行的农村政策,对中国实行社会主义的市场经济带来重大的冲击,由原本的集权城市规划转变为由市场经济主导。其对财产权的平等保护及公平竞争赋予了法律的保障,更能确保土地使用权者的权利,财产权更加明确地被界定出来,新的权利因为新的经济力量而产生。其中当农业用地转为非农业用地使用时,土地的财产权将从较低的农业土地产权,转变成与房地产开发结合成高价的城市土地产权,使得大量的财产权流入公共领域之中,对社会产生重大冲击。制度的转变是为了减少交易成本,促进市场交易,但由于中国相关法令与措施并不完善,反而造成社会对立,以及不必要的社会外部性成本,于是制度的转变反而不利弱势之农民,造成当前中国三农问题严重。就此,本研究针对中国土地一级市场导入财产权经济分析概念,分析土地一级市场制度出现的问题,使土地可以透过供需曲线加以分析,但供需分析中原先X轴的土地数量,应改为土地财产权的数量,此转变使土地变的像一般财货一样,可以在市场上移动且改变数量。透过土地一级市场的供需分析,了解中国土地一级市场受到土地征收补偿制度、农业土地移转制度、土地一级市场交易机制与房地市场政策制度的影响,而其中又以土地征收补偿制度的影响最大。
The property law enacted on October 1st, 2007 and the rural policy enacted by the third Plenary Session of the 17th Central Committee of CPC in 2008 impact the socialist market economy in China seriously, reforming the driving power of the urban planning system from centralized bureaucracy to market force. The law and policy mentioned above legally ensure the equality of property, especially for the land users whose property can be defined more clearly, and new rights come into being as a result of new economic force. When the non-agriculturalization of farmland takes place, the land property will convert from a low-value agricultural property to a high-value urban land property integrated with real estate development, which results in a large flow of property into public domain and subsequently a great influence on the whole society. Theoretically, the institutional reform is designed to reduce transaction costs and smooth market activities, however, as a result of the imperfection of relevant laws and policy, the institutional reform in China instead inflicts social divisions and unnecessary social externality cost, worsening the
新型纳米结构金属材料的力学性能及变形机制
曲绍兴,
力学进展 , 2014, DOI: 10.6052/1000-0992-14-046
Abstract: “纳米结构”化是金属及其合金材料获得优异力学性能的有效途径.纳米结构金属材料表面或内部的缺陷,包括晶界、位错、孪晶、孔洞、裂纹、第二相等,其形核、演化及互相作用对材料的强度和韧性具有重要影响.该文综述了与上述科学问题相关的新型纳米结构金属材料的微观组织结构表征及力学性能测试、强韧化机制计算模拟方面的研究进展.并讨论了急需从微观尺度上就新型纳米结构金属材料的特征力学行为和关键变形机制开展深入、系统研究.
微动白层形成的控制因素及其对磨损过程的影响
朱?,仲荣
摩擦学学报 , 2004,
Abstract: 在径向和复合(切向与径向复合)微动条件下,考察了2091铝锂合金在不同载荷水平和倾斜角度下的微动行为和损伤过程;结合不同阶段微动磨痕剖面分析,研究了微动白层(TTS)的形成条件,并详细分析了在不同微动阶段TTS的演变过程.结果表明,TTS形成的主要控制因素是表面切应力和切向位移,TTS形成过程呈现塑性变形特征;TTS对磨损过程具有重要影响.
关于复合式微动的研究
朱?,仲荣
摩擦学学报 , 2001,
Abstract: 在新型径向微动试验装置上,改变试样的倾斜角度,实现了径向微动和切向微动的复合.考察了GCr15钢球/2091铝锂合金在倾斜30°和45°以及不同外加载荷条件下的复合微动损伤行为,并分析了其磨痕特征
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