检索结果-南通市图书馆

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

数字财富 2002年第9期 14-15页

中国生物工程技术走向领先刚刚成立三年的北京基因研究所就已经能够在几个月的时间内成功地破解水稻基因组结构;而去年北京的研究人员在一只老鼠身上培植了狗类的膀胱组织。在长沙,研究者宣布他们已经在世界上首次克隆出可产生主干细... 详细信息

中国生物工程技术走向领先刚刚成立三年的北京基因研究所就已经能够在几个月的时间内成功地破解水稻基因组结构;而去年北京的研究人员在一只老鼠身上培植了狗类的膀胱组织。在长沙,研究者宣布他们已经在世界上首次克隆出可产生主干细胞的人类晶胚。这些成果都无一例外地极大地震惊了西方科技界。

关键词：在线游戏策略儿童恐怖主义游戏玩家 media 数字财富生物工程技术膀胱组织 CEO 游戏机游艺机玩具

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

数字财富 2002年第8期 16-17页

可口可乐品牌价值696.4亿美元,比去年略有上升,继续高居首位,微软品牌价值有所下降,但仍以640.9亿美元位居第二。在前10大品牌中,美国占了8家,其中国际商用机器公司(IBM)以511.9亿美元的品牌价值排名第三,通用电气

关键词：品牌价值安达信 media 美元本位币

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

数字财富 2002年第12期 16-17页

清华大学紧追MIT 随着中国科技研究的日渐深入以及科技市场的逐渐成熟,清华大学凭借自己的人才优势,逐渐加快了科技从理论向市场转化的步伐。尤其是在鼓励在校学生进行科技创业方面,更取得了不少丰富的经验。就科技转化为商品的规模来... 详细信息

清华大学紧追MIT 随着中国科技研究的日渐深入以及科技市场的逐渐成熟,清华大学凭借自己的人才优势,逐渐加快了科技从理论向市场转化的步伐。尤其是在鼓励在校学生进行科技创业方面,更取得了不少丰富的经验。就科技转化为商品的规模来看,清华大学还远远不能与MIT(麻省理工学院)相比。由MIT学生和教师开办

关键词：股票期权 MIT 股票选择权 media 清华大学学生创业市场转化数字财富企业企业管理公司丑闻蜂窝创业园

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

数字财富 2002年第11期 14-15页

巴菲特:永远的“金手指” 虽然巴菲特沉痛地说:“高技术泡沫的破裂对于整个美国经济产生了大范围的影响,这可能是我一生当中迄今为止见过的最大规模的行业泡沫破裂现象。”有投资“金手指”之称的沃伦·巴菲特对于这次的高技术泡沫破裂... 详细信息

巴菲特:永远的“金手指” 虽然巴菲特沉痛地说:“高技术泡沫的破裂对于整个美国经济产生了大范围的影响,这可能是我一生当中迄今为止见过的最大规模的行业泡沫破裂现象。”有投资“金手指”之称的沃伦·巴菲特对于这次的高技术泡沫破裂并没有感到不安,在他的脸上看不到遗憾、惋惜或是后悔,也许原因是巴菲特本人对于这次的高技术泡沫破裂没有任何责任。事实上,现在回想起来,巴菲特此前坚持的很多理论和看法都是正确的,其中包

关键词：巴菲特金手指高技术投资财政管理风险投资公司 media

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

数字财富 2003年第3期 14-15页

在制造电脑硬件的效率方面,没有能出戴尔之右者。在去年350亿的收入中,生产费用最多只占10％,相比而言,惠普是21％,捷威是25％。没有不必要的费用:这是著名的“戴尔直销”商业模式奉

关键词：戴尔模式公开上市美元本位币 media Google

Lured by Tradition A famous Chinese vlogger is using social media to promote intangible cultural heritage

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

ChinAfrica 2025年第1期17卷 56-58页

作者： LI XIAOYU 不详

In the digital age,where traditional culture is in danger of gradually disappearing,one iconic figure has taken it upon herself to reverse the trend by reviving traditional skills.A prominent Chinese vlogger,Li Ziqi,whose birth name is Li Jiajia,has amassed a vast online following by reinterpreting traditions that date back thousands of *** a threeyear absence from social media,she made a highly anticipated return with the release of three new videos in mid-November *** videos represent the culmination of several months of behind-the-scenes work.

关键词： media return interpreting

Effect of corrosive media on galvanic corrosion of complicated tri-metallic couples of 2024 Al alloy/Q235 mild steel/304 stainless steel

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2019年第9期35卷 1886-1893页

作者： Linjun Shi Xiuying Yang Yingwei Song Dan Liua Kaihui Dong Dayong Shan En-Hou Han Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology o f ChinaHefei 230026China Shenyang Institute of Technology Fushun 113122China

Galvanic corrosion of tri-metallic couples is more complicated than that of bi-metallic couples. In this study, the effect of the pH of corrosive media on the galvanic corrosion of 2024 A1 alloy/Q235 mild steel/304 stainless steel tri-metallic couples was investigated using potentiodynamic polarization, scanning electron microscopy, scanning vibrating electrode technique and a multi-channel galvanic corrosion meter. The results show that 2024 always acts as the only anode in 3.5 wt% NaCl at pH 5.56,9.72 and 12.0, while both Q235 and 2024 act as anodes at pH 2.39 in the initial stage and then the role of Q235 changes at longer coupling time, which can be attributed to the effect of pH on the surface film of 2024. It is also found that the galvanic current density of a tri-metallic couple is the superposition of two bi-metallic couples when cathodic reactions are controlled by the diffusion of oxygen, otherwise it is smaller than that of the sum of two bi-metallic couples. The localized corrosion instead of uniform corrosion of anodic metal is accelerated by galvanic corrosion.

关键词： Galvanic corrosion Tri-metallic couples Corrosive media Scanning vibrating electrode technique Zero resistance ammeter

维普期刊数据库

Interactions between gas flow and reversible chemical reaction in porous media

在线全文

学校读者我要写书评

暂无评论

Journal of Central South University 2017年第5期24卷 1144-1154页

作者： JIANG Yuan-yong XU Zeng-he ZHANG Meng-zhou BAI Li-yuan School of Resources and Civil Engineering Northeastern UniversityShenyang 110819China College of Applied Technology Liaoning Technical UniversityFuxin 123000China Environmental Monitoring Center Station of Tangshan City Tangshan 063000China

Taking into consideration the gas compressibility and chemical reaction reversibility, a model was developed to study the interactions between gas flow and chemical reaction in porous media and resolved by the finite volume method on the basis of the gas-solid reaction aA(g)+bB(s)cC(g)+dD(s).The numerical analysis shows that the equilibrium constant is an important factor influencing the process of gas-solid reaction. The stoichiometric coefficients, molar masses of reactant gas, product gas and inert gas are the main factors influencing the density of gas mixture. The equilibrium constant influences the gas flow in porous media obviously when the stoichiometric coefficients satisfy a/c≠1.

关键词： porous media compressible gas flow reversible chemical reaction interaction

维普期刊数据库

Learning-based real-time imaging through dynamic scattering media

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2024年第10期13卷 2131-2144页

作者： Haishan Liu Fei Wang Ying Jin Xianzheng Ma Siteng Li Yaoming Bian Guohai Situ shanghai Institute of Optics and Fine Mechanics Chinese Academy of SciencesShanghai 201800China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences100049 BejingChina Department of Engineering Science University of OxfordOxfordUk Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesHangzhou 310024China

Imaging through dynamic scattering media is one of the most challenging yet fascinating problems in optics,with applications spanning from biological detection to remote *** this study,we propose a comprehensive learning-based technique that facilitates real-time,non-invasive,incoherent imaging of real-world objects through dense and dynamic scattering *** conduct extensive experiments,demonstrating the capability of our technique to see through turbid water and natural *** experimental results indicate that the proposed technique surpasses existing approaches in numerous aspects and holds significant potential for imaging applications across a broad spectrum of disciplines.

关键词： dynamic media holds