Results 1 to 10 of about 836 (62)

Palladium-Catalyzed Electrochemical Dehydrogenative Aminocarbonylation of Termianl Alkynes

Youji huaxue, 2020
一氧化碳是重要的工业气体, 具有合适的氧化态、 稳定性和反应性, 可以向分子中引入羰基, 是一碳化学 的核心原料之一. 脱氢甲酰基化反应, 无需预先官能 团化, 实现 C—H 底物的直接增羰官能团化, 具有较高 的原子经济性和步骤经济性. 但常见的脱氢甲酰化反应 需要化学计量的氧化剂, 如氧气, 造成可燃助燃气体的 混合, 具有很大的安全风险. 如何实现无氧化剂条件下 的脱氢羰基化反应, 需要通过新的模式来实现.
Xuan Cheng
semanticscholar   +1 more source

Ongoing threats and the current status of snow leopard conservation in China

Biodiversity Science, 2019
[肖凌云 (2017) 三江源地区雪豹(Panthera uncia)、岩羊(Pseudois nayaur)与家畜的竞争与捕食关 系研究. 博士学位论文, 北京大学, 北京.] Xu A, Jiang Z, Li C, Guo J, Da S, Cui Q, Yu S, Wu G (2008) Status and conservation of the snow leopard Panthera uncia in the Gouli Region, Kunlun Mountains, China ...
Liao Xiaoyu, Xiao Lingyun, Li Xuchang, Cheng Chen, Feng Chen, Zhao Xiang, L. Yanlin, Bian Xiaoxing, H. Bing, Zhang Changzhi, S. Justine, Xing Rui, Hu Yahui, Awangjiumei, Xierannima, Song Dazhao, Huang Qiao-wen, Zhaxisange, Peng Kui, Y. Hang, Li Xinming, Yang Xin, Li Sheng, Shi Xiaogang, Yang Chuangming, L. Zhi, Seattle Wa Usa Snow Leopard Trust, U. Xinjiang   +27 more
semanticscholar   +1 more source

A sky-high view of the Third Pole: an interview with Tandong Yao and Weiming Fan

, 2015
青藏高原及其扩展到周边的山地，占地超过500万平方公里——将近中国大陆面积的一半。这里有着除南北极外最大的冰川面积，因此也被称作地球的“第三极”。 2012年启动的“青藏高原多圈层相互作用及其资源环境效应”项目是中国科学院B类先导战略研究专项，五年预算超过2亿元（约合4000万美元），由位于北京的中国科学院（CAS）青藏高原研究所（ITP）主导。2014年1月，中国科学院在青藏高原研究所总部设立青藏高原地球科学卓越创新中心，旨在为该领域的研究提供长期支持并提高其学术水准。
J. Qiu
semanticscholar   +1 more source

1,8-萘酰亚胺类衍生物的结构及紫外-可见吸收光谱

, 2009
QI Qi, Yue-Ming Sun, HA Yong-Quan
semanticscholar   +1 more source

Study on Flow Field Adaptability of New Inserted Electromagnetic Flowmeter

, 2017
马志垒, 李小京
semanticscholar   +1 more source

Thermodynamic analysis and optimization for a two-stage thermoelectric generator device with cylindrical tubes driven by sintering flue gas heat

, 2016
Bing Xiong, Lingen Chen, F. Meng, F. Sun
semanticscholar   +1 more source

A Dramatic Influence of Ti Atom on the Electronic Structures of (Al 16 Ti) n ± ( n =0?3) Ionic Clusters and Their Interaction with H 2 O Molecules

, 2015
Liu Yi-liang, Hua Ya-Wen, Jiang Gang, Chen Jun   +3 more
semanticscholar   +1 more source

Nonlinear Optical Properties of Green Fluorescent Protein Chromophore Coupled Diradicals

, 2013
Yu Hai-ling, 长春 吉林农业大学资源与环境学院, Zhang Meng-ying, Hong Bo, Chen Qiang, Wang Jiao, Tian Dong-mei, Qiu Yong-qing   +7 more
semanticscholar   +1 more source

[Research progress on elbow joint rehabilitation robots]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Li M, Xu F, Wang D, Xu J.
europepmc   +1 more source

[Spatial omics in pulmonary fibrosis: advancing mechanistic insights and therapeutic strategies]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Peng Y, Xie Y, Yang F, Qiao X, Tian Y.
europepmc   +1 more source