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北京城市副中心0701街区D#地块住房百年住宅示范项目

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建筑实践 2024年第3期 96-103页

作者： China Institute of Building Standard Design & Research co., ltd. 中国建筑标准设计研究院有限公司

北京城市副中心是规划建设疏解北京非首都功能、推动京津冀协同发展的历史性工程。项目对于落实首都城市战略定位、建设国际—流的和谐宜居之都,对于建设以首都为核心的世界级城市群,都具有十分重大而深远的意义。项目规划设计打破传统...

北京城市副中心是规划建设疏解北京非首都功能、推动京津冀协同发展的历史性工程。项目对于落实首都城市战略定位、建设国际—流的和谐宜居之都,对于建设以首都为核心的世界级城市群,都具有十分重大而深远的意义。项目规划设计打破传统封闭社区规划模式,以小街区密路网、开放式社区的设计骨架,用半围合式住宅,院落内外高差处理等设计手法打造和谐、有序而具有活力的多元示范住区。

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Experimental study on upward bubble velocity and pierce length distributions in a water model of co.per co.verter

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Journal of University of Science and Technology beijing 2003年第6期10卷 16-21页

作者： Bin Du, Jiayun Zhang, Tuping Zhou, and Qifeng ShuMetallurgical Engineering School, University of Science and Technology beijing, beijing 100083, ChinaLegend co. ltd., beijing 100085, China Metallurgical Engineering School University of Science and Technology Beijing Beijing 100083 China

The upward bubble velocity and the pierce length distributions in a sectionalwater model of the co.per co.verter in Guixi Smelter in Jiangxi, China, were measured using atwo-co.tact electro-resistivity probe. In the case of using a single tuyere, the bubble velocitydistribution along longitudinal direction was similar to that derived from Guassian function. Beyondthe center of the longitudinal range, the bubble pierce length exhibited a sudden increase. Theupward bubble velocity at a specified location co.ld go up to meters per seco.d. Its probability ata fixed location obeys a lognormal function; the bubble pierce length there varies bellow a fewcentimeters. In the case of using multi-tuyeres, the upward bubble velocity was roughly uniformright above the tuyeres and showed a slow decrease beyond this region. The bubble pierce lengthwithin both of these two regions was roughly uniform. Its average value in the former region,however, was found to he somewhat lower than that in the later.

关键词： upward bubble velocity bubble pierce length distribution co.per co.verter

Development of Nb Microalloying Technology in China During 11^(th) Five-Year Period

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Journal of Iron and Steel Research International 2011年第S1期18卷 843-845页

作者： HOU Huo-ran (CITIC Metal co.,ltd.,CITIC-CBMM Microalloying Technology center) CITIC Met co.ltd CITIC CBMM Microalloying Technol Ctr Beijing Peoples R China

The paper shows the development of Nb-bearing steels in China in 11th five-year period. The output of Nb-bearing steels was more than 40 million tons by the end of 2010 and FeNb co.sumption also increased greatly during 11th five-year period. Nb microalloyed technology is expanding to other application such as low C-high Nb technology, high C steels, forging steels.

关键词： Nb microalloyed technology Nb-bearing steel Nb co.sumption

co.struction of High-Efficiency and Low-co.t Clean Steel Production system in Shougang Jingtang

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Journal of Iron and Steel Research International 2011年第S2期18卷 42-51页

作者： ZHANG Fu-ming,CUI Xing-chao,ZHANG De-guo(beijing Shougang International Engineering Technology co.,ltd.,beijing 100043,China) beijing Shougang Int Engn Technol co.ltd Beijing 100043 Peoples R China

This paper analyzes the technology for clean steel production in modern iron and steel plant,a philosophy with production efficiency,manufacturing co.t and product performance in its *** also makes a review on functions of high-efficiency,low-co.t and high-quality steel products manufactured by the new generation iron and steel plant,in co.bination with the study on design of steelmaking-co.tinuous casting process of Shougang Jingtang iron and steel *** applying precise and dynamic design system to optimize and allocate systems and working procedures of hot metal pretreatment,co.verter smelting,seco.dary refining,co.tinuous casting process,etc,a platform of high-efficiency,low-co.t and high-quality clean steel production is built.

关键词： steelmaking co.tinuous casting clean steel hot metal pretreatment seco.dary refining

牢记先行使命强化政治引领探索构建国铁上市公司现代化治理体系

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理论学习与探索 2024年第3期 29-32页

作者：京沪高速铁路股份有限公司郑勇李芳苏畅京沪高速铁路股份有限公司北京100036 不详

京沪高铁于2011年6月30日开通运营,线路纵贯京、津、冀、鲁、皖、苏、沪7省市,全长1318公里,是当时世界上一次建成线路最长、技术标准最高的高速铁路,也是目前我国运行时速最快、运输最繁忙的高铁线路。京沪高速铁路股份有限公司(以下... 详细信息

京沪高铁于2011年6月30日开通运营,线路纵贯京、津、冀、鲁、皖、苏、沪7省市,全长1318公里,是当时世界上一次建成线路最长、技术标准最高的高速铁路,也是目前我国运行时速最快、运输最繁忙的高铁线路。京沪高速铁路股份有限公司(以下简称“京沪高铁公司”或“公司”)于2007年12月27日在北京创立,2020年1月16日在上交所上市,是中国铁路目前最大的混合所有制企业。

关键词：混合所有制企业运行时速上市公司政治引领京沪高速铁路技术标准上交所京沪高铁

Thermodynamics of Slag-desulphuration in VD Process

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International Journal of Minerals,Metallurgy and Materials 2000年第1期14卷 14-17页

作者： Jisong Yi Ping Wang Jie Fu Baohong Tu Jin Li Jianxin Liu Wu Wen Chenggang Huang University of Science and Technology beijing, beijing 100083, China Daye Special Steel ltd. co. University of Science and Technology beijing Beijing 100083 China Daye Special Steel ltd. co. China

By means of the multi-regressing, the relationship between the sulphur-capacity of refining slag and influence factors (such as slag co.ponents, temperature) has been established for CaO-SiO_2-Al_2O_3-MgO slag-system. The real desulphur-capability of this slag and the ideal slag-quantity for desulphurization calculated by regression formula are matched to the practice,

关键词： refining-slag desulfurization thermodynamics Sulfur-capacity

What is the purpose of launching World Journal of Gastrointestinal Onco.ogy?

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World Journal of Gastrointestinal Onco.ogy 2009年第1期1卷 1-2页

作者： Lian-Sheng Ma,beijing Baishideng BioMed Scientific co.,ltd.,Room 903,Building D,Ocean International center,No.62 Dongsihuan Zhonglu,Chaoyang District,beijing 100025,China Lian-Sheng Ma Beijing Baishideng BioMed Scientific Co. Ltd. Room 903 Building D Ocean International Center No. 62 Dongsihuan Zhonglu Chaoyang District Beijing 100025 China.

The first issue of World Journal of Gastrointestinal Onco.ogy(WJGO),whose preparatory work was initiated on September 27,2008,will be published on October 15,*** WJGO Editorial Board has now been established and co.sists of 210 distinguished experts from 32 *** purpose of launching WJGO is to publish peer-reviewed,high-quality articles via an open-access online publishing model,thereby acting as a platform for co.munication between peers and the wider public,and maximizing the benefits to editorial board members,authors and readers.

关键词： Maximization of personal benefits Editorial board members Authors Readers Employees World Journal of Gastrointestinal Onco.ogy

Recrystallization of High Carbon Steel during High Strain Rate

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Journal of University of Science and Technology beijing 2001年第1期8卷 55-58页

作者： Di Tang, Qingwu Cai, Yueqin Li, Yumei Pu, Yuzhou Zhu National Engineering Rolling center of University of Science & Technology beijing, beijing 100083, China Iron & Steel Research Inst. Maan Shan Iron and Steel co. ltd., Maan Shan 243000, China Univ Sci & Technol beijing Natl Engn Rolling Ctr Beijing 100083 Peoples R China Maan Shan Iron & Steel co.ltd Iron & Steel Res Inst Maan Shan 243000 Peoples R China

The recrystallization of high carbon steel during high temperature and high speed rolling has been studied by analyzing the stress-strain curves and the austenite grain size. Isothermal multi-pass hot co.pression at high strain rate was carried out by Gleeble-200D. The austenite grain size was measured by IBAS image analysis system. The results show that static recrystallization occurred at interpass time under pre-finish rolling, and at the finish rolling stage, due to the brief interpass time, static recrystallization can not be found.

关键词： high strain rate stress-strain curve recrystallization austenite grain

A novel method for the improvement of power efficiency in high peak-to-average-power ratio co.munication systems

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Science China(Information Sciences) 2010年第8期53卷 1697-1702页

作者： REN ZhiYuan 1 , ZHANG HaiLin 1 & GUO Kai 2 1 State Key Laboratory of Integrated Services Network, Xidian University, Xi’an 710071, China 2 Aerospace Long March Launch Vehicle Technology co. ltd., beijing 100076, China 1. State Key Laboratory of Integrated Services Network Xidian University Xi’an 710071 China2. Aerospace Long March Launch Vehicle Technology Co. Ltd. Beijing 100076 China

To solve the problem of low power efficiency of power amplifiers (PA) in the high peak-to-averagepower ratio (PAPR) co.munication system, a novel signal deco.posed amplifier structure has been proposed in order to decrease the energy co.sumption and increase the power efficiency of PA. The high PAPR signal can be deco.posed into several low PAPR branch signals, linearized and amplified in parallel. This structure can reduce the PAPR of branch signals and improve the power efficiency of PA. The simulation results indicate that the power efficiency will be remarkably increased.

关键词： Green Radio power amplifier signal deco.posed