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991.
Xi ZHANG Yong GENG Yen Wah TONG Harn Wei KUA Huijuan DONG Hengyu PAN 《Frontiers in Energy》2021,15(2):473
Low-carbon energy technology (LC) innovation contributes to both environmental protection and economic development. Using the panel data of 30 provinces/autonomous regions/municipalities in China from 1998 to 2017, this paper constructs a two-layer logarithmic mean Divisia index (LMDI) model to uncover the factors influencing the variation of the innovation of LC in China’s industrial sectors, including the alternative energy production technology (AEPT) and the energy conversation technology (ECT). The results show that China’s industrial LC patent applications rapidly increased after 2005 and AEPT patent applications outweighed ECT patent applications all the time with a gradually narrowing gap. Low-carbon degree played the dominant role in promoting the increase in China’s industrial LC patent applications, followed by the economic scale, R&D (research and development) efficiency, and R&D share. Economic structure contributed to the increases in LC patent applications in the central and the western regions, while led to the decreases in the eastern region, the north-eastern region, and Chinese mainland Xizang(Tibet) Autonoomous Region is not considered due to lack of data. This note applies to the entire article. . Low-carbon degree and economic scale were two main contributors to the growths of both industrial AEPT patent applications and ECT patent applications in Chinese mainland and the four regions. Several policy recommendations are made to further promote industrial innovation in China. 相似文献
992.
Zhenyang Cai Daxu Zhang Xinxiang Chen Yuntong Huang Yuqing Peng Canhui Xu Siyu Huang Rong Pu Sainan Liu Xiaojun Zhao Lairong Xiao 《Journal of the European Ceramic Society》2019,39(7):2277-2286
To protect refractory metal against oxidation at ultra-high temperatures, a MoSi2-TaSi2 ceramic coating was prepared on a pure tantalum (Ta) substrate using a novel three-step process, which included dip-coating with a molybdenum slurry, vacuum sintering, and halide-activated pack cementation (HAPC). The original coating had a MoSi2-TaSi2 double-layer structure from the surface to the substrate. After oxidation at 1700°C for 8 h in air, the coating exhibited a complex multi-layer structure composed of SiO2-Mo5Si3-MoSi2-(Mo,Ta)5Si3-TaSi2-Ta5Si3 from the outer layer to the inner layer, due to the high-temperature phase transition and diffusion of Si and O. The coating effectively protected the Ta substrate at 1700°C for 12 h without failure, thereby demonstrating great improvement to its service life in an ultra-high-temperature aerobic environment. The protective effect was attributed to the integrity of the ceramic coating and the formation of a dense, uniform SiO2 film that effectively lowered the inward oxygen diffusion rate. 相似文献
993.
《Energy Policy》2015
Chinese policymakers have attached great importance to energy intensity reduction. However, the unprecedented urbanization process exercises additional pressure on the realization of energy intensity reduction targets. A better understanding of the impacts of urbanization is necessary for designing effective policies aimed at reaching the next energy intensity reduction targets. This paper empirically investigates the impacts of urbanization on China's aggregate and disaggregated energy intensities using a balanced panel dataset of 30 provinces covering the period from 2000 to 2012 and panel estimation techniques. The results show that urbanization significantly increases aggregate energy intensity, electricity intensity and coal intensity. 相似文献
994.
Angela Ki Che Leung 《Centaurus; international magazine of the history of science and medicine》2020,62(2):257-262
This paper looks at the role of state and society in the history of epidemic governance in China for an appreciation of the way China manages the current COVID-19 epidemic. 相似文献
995.
TiO2/PSS自组装薄膜的光催化性能 总被引:11,自引:2,他引:11
利用静电自组装工艺在石英衬底上制备了结构有序的TiO2/PSS纳米复合膜,并采用UV-Vis-NIR分光光度计、原子力显微镜(AFM)对复合膜的结构与光催化性能进行了深入的研究。结果表明:有序多孔TiO2颗粒膜具有良好的光催化性能,能够在短时间内降解掉复合膜中有机成分,烧结处理薄膜的光催化性能明显优于紫外照射处理的样品。 相似文献
996.
基于精益生产的企业价值流的研究 总被引:5,自引:0,他引:5
精益生产通过降低成本,资源浪费和生产时间,最大化地增加产品的价值,企业进行精益生产的过程实际上是形成一个连续的价值增值流的过程,本文阐述了价值流和价值流图的概念,并探讨了反映价值流动的价值流图的形式化描述以及价值流图和过程的关系。 相似文献
997.
998.
简要介绍了国家自然科学基金委员会机械工程学科8年来的资助项目及成果概况。总结了资助项目的5个特点,提出了正确处理基础研究中的前沿与应用、前沿与创新、前沿与基础等3个关系。 相似文献
999.
Xie XishanHigh Temperature Materials Testing Research Laboratories University of Science Technology Beijing Beijing ChinaLin Fusheng Cheng ShichangShanghai Power Equipment Research Institute Central Iron Steel Re 《机械工程学报(英文版)》2002,15(3):257-265
In the past half century China has developed and formed her own system of high temperature materials for power, automobile and aero-engine industries in the temperature range from 550 。C 1 100 。C. These high temperature materials include heat-resisting steels, iron-base, nickel-iron-base and nickel-base superalloys. Some achievements in high temperature strength study, new technologies and new alloy development are also discussed. 相似文献
1000.
A data base of lead isotope ratio of ancient Chinese bronzes is set up. There are 2 888 members, including bronze objects, casting remains, and related ores, etc. in the file. The file contents of data base are made from analysis work on Chinese bronze previously carried out in several laboratories in China, Japan and USA. The main body of the file contents is formed from records, analysis data, reference documents, and images. The data base is designed for sharing information in provenance study on raw metal material for bronze production in China Bronze Age. 相似文献