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24篇 您的检索式:作者名="He Demin"
    题名 作者 年代 出处 被引量
1LLDPE prepared by in situ polymerization using a dual-functional catalytic system of Ti(On-Bu)_4 /AlEt_3-Et(Ind)_2-ZrCl_2/MAO显示文摘Linear low-density polyethylene (LLDPE) was prepared by in situ polymerization using a dual-functional catalytic system containing Et(Ind)2ZrCl2/MAO and Ti(On-Bu)4 /AlEt3 used as co-polymerization catalyst and dimeriza-tion catalyst, respectively. The catalytic system showed high activity and the polymer with low melting point, narrow molecular weight distribution (MWD) and low crystallinity was produced.LIU Zhongyang, XU Demin, GUO Cunyue, WANG Jun, HE Dawei & HU YouliangStale Key Lab of Engineering Plastics, Center for Molecular Science, Institute of Chemistry. Chinese Academy of Sciences, Beijing 100080, China Beijing Lab of Catalysis. China National Petroleum Corporation Key Lab of Catalysis, Beijing 100080, China 2001Chinese Science Bulletin2001,46,24:7
2Preparation of long-branched polyethylene by in situ poly-merization using late transition metal and metallocene catalysts显示文摘An in situ polymerization method was investigated to prepare long-branched polyethylene (LBPE) with ethylene alone and a single cocatalyst, methylalumoxane (MAO), by using a dual functional catalytic system containing late transition metal oligomerization catalyst and metal-locene copolymerization catalyst. The obtained long-branched polyethylene has the characteristics of low melting point, high activity and well-dispersed sequence distribution.LIU Zhongyang GUO Cunyue MAZhi WANG Jun XU Demin HE Dawei HU Youliang 2001Chinese Science Bulletin2001,46,24:5
3Reactivity of Al-rich Alloys with Water Promoted by Liquid Al Grain Boundary Phases显示文摘Al–Ga–Sn, Al–Ga–In and Al–Ga–In–Sn alloys were prepared using arc melting technique. Their microstructures were investigated by X-ray diffraction and scanning electron microscopy with energy dispersed X-ray. Based on microstructure analysis, the phase constituents of alloys at Al grain boundaries were identi?ed. The melting points of Al grain boundary phases were measured using differential scanning calorimeter.The reactivities of Al–water at different water temperatures indicate that liquid Al grain boundary phases promote Al–water reactions of alloys. The melting points of Al grain boundary phases affect the reaction temperatures of Al–water, leading to different reaction temperatures of alloys. The measured H2 generation rate and yields of alloys are related to the compositions of alloys. The theory of microgalvanic cell is used to explain the observed different H2 generation rates of alloys.Tiantian He Wei Wang Wei Chen Demin Chen Ke Yang 2017Journal of Materials Science & Technology2017,33,4:3
4Simultaneous knockdown of p18^INK4C, p27^Kip1 and MAD1 via RNA interference results in the expansion of long-term culture-initiating cells of murine bone marrow cells in vitro显示文摘外来的造血的生长管理者的联合例如干细胞因素(SCF ) , interleukin (IL )-3 和 IL-6,能导致静止造血的干细胞(HSC ) 的分割,但是它通常损害 HSC 的自强能力。然而,内在的否定房间周期管理者,例如 p18 INK4c (p18 ) p27 Kip1 (p27 ) 和 MAD1,能调整 HSC 的自强。它是未知的是否一些外来的管理者的移动并且经由 RNA 干扰(RNAi ) 的内在的否定房间周期管理者击倒导致 HSC 的前 vivo 扩大。探讨这个问题, lentiviral 基于向量的 RNAi 工具被开发生产小 RNA 的二个拷贝指向多重基因到击倒内在的否定房间周期管理者 pl8, p27 和 MAD1。形成殖民地的房间,长期的开始文化的房间(LTC-IC ) 和嫁接试金被用来评估外来、内在的管理者的效果。结果证明有仅仅 SCF 的媒介,但是没有 IL-3 和 IL-6,能维持 sca-1 + 有高 LTC-IC 的 c 工具包 + 骨头髓房间频率和低房间分割。不管多么 sca-1 +c 工具包 + 骨头髓房间在有仅仅 SCF 的媒介是有教养的并且同时经由 lentiviral 将 pl8, p27 和 MAD1 的表示击倒基于向量的 RNAi,房间展出了两高 LTC-IC 频率和高房间分割,不过,嫁接失败了。因此,同时有仅仅 SCF 的媒介的 pl8, p27 和 MAD1 击倒尽管有嫁接的损失,能导致 LTC-IC 扩大能力。Yan-Yi Wang Yong Yang Qingyong Chen Jianping Yu Yongzhong Hou Lizhen Han Jun He Demin Jiao Huihui Yu 2008Acta Biochimica et Biophysica Sinica2008,40,8:3
5CD38 deficiency alleviates Ang II-induced vascular remodeling by inhibiting small extracellular vesicle-mediated vascular smooth muscle cell senescence in mice显示文摘CD38 is the main enzyme for nicotinamide adenine dinucleotide(NAD)degradation in mammalian cells.Decreased NAD levels are closely related to metabolic syndromes and aging-related diseases.Our study showed that CD38 deficiency significantly alleviated angiotensin II(Ang ll)-induced vascular remodeling in mice,as shown by decreased blood pressures;reduced vascular media thickness,media-to-lumen ratio,and collagen deposition;and restored elastin expression.However,our bone marrow transplantation assay showed that CD38 deficiency in lymphocytes led to lack of protection against Ang ll-induced vascular remodeling,suggesting that the effects of CD38 on Ang ll-induced vascular remodeling might rely primarily on vascular smooth muscle cells(VSMCs),not lymphocytes.In addition,we observed that CD38 deficiency or NAD supplementation remarkably mitigated Ang ll-induced vascular senescence by suppressing the biogenesis,secretion,and internalization of senescence-associated small extracellular vesicles(SA-sEVs),which facilitated the senescence of neighboring non-damaged VSMCs.Furthermore,we found that the protective effects of CD38 deficiency on VSMC senescence were related to restoration of lysosome dysfunction,particularly with respect to the maintenance of sirtuin-mediated mitochondrial homeostasis and activation of the mitochondria-lysosomal axis in VSMCs.In conclusion,our findings demonstrated that CD38 and its associated intracellular NAD decline are critical for Ang ll-induced VSMC senescence and vascular remodeling.Lu Gan Demin Liu Jing Liu Erya Chen Chan Chen Lian Liu Hang Hu Xiaohui Guan Wen Ma Yanzi Zhang Yarong He Bofu Liu Songling Tang Wei Jiang Jianxin Xue Hongbo Xin 2021Signal Transduction and Targeted Therapy2021,6,7:2
6Characterization of Oil Shale Processing Residues and Separated Products显示文摘Xu Yingmei He Demin Jiang Huiming 2009Oil Shale2009,26,4:1
7Influence of Calcination Temperature on Leaching Rate of Aluminum and Iron Impurities in Oil Shale Ash显示文摘Xu Yingmei He Demin Wang Dongmei 2009Oil Shale2009,26,2:1
8The influences of reaction conditions on phenanthrene hydrogenation over NiW/AI203 catalyst显示文摘WANG Kun GUAN Jun HE Demin 2012Advanced Materials Research2012,,:1
9Preparation of Amorphous Silica from Oil Shale Residue and Surface Modification by Si- lane Coupling Agent显示文摘Xu Yingmei Qi Ji He Demin 2010Oil Shale2010,27,1:1
10Influences of adjustable grafted side chains on the non-isothermal crystallization of a ternary-monomer solid phase graft copolymer of polypropylene显示文摘Hong Haoqun He Hui Jia Demin 2008Polymer and Polymer Composites2008,16,2:1
11Influence of Calcination Temperature on Leaching Rate of Aluminum and Iron Impurities in Oil Shale Ash显示文摘Xu Yingmei He Demin Wang Dongmei 2009Oil Shale2009,26,2:1
12Characterization of Oil Shale Processing Residues and Separated Products显示文摘Xu Yingmei He Demin Jiang Huiming 2009Oil Shale2009,26,4:1
13Bioengineered magnetoferritin nanozymes for pathological identification of high-risk and ruptured atherosclerotic plaques in humans显示文摘Atherosclerotic plaque rupture results in thrombus formation and vessel occlusion, and is the leading cause of death worldwide. There is a pressi ng need to identify plaque vuln erability for the treatment of carotid and coronary artery diseases. Nano materials with en zyme-like properties have attracted significant interest by providing biological, diagnostic and prognostic information about the diseases. Here we showed that bioe ngin eered mag netoferritin nan oparticles (M-HFn NPs) functionally mimic peroxidase en zyme and can intrin sically recog nize plaque-infiltrated active macrophages, which drive atherosclerotic plaque progression and rupture and are significantly associated with the plaque vulnerability. The M-HFn nanozymes catalyze the oxidation of colorimetric substrates to give a color reaction that visualizes the recognized active macrophages for one-step pathological identification of plaque vulnerability. We examined 50 carotid endarterectomy specimens from patients with symptomatic carotid disease and demonstrated that the M-HFn nanozymes could distinguish active macrophage infiltration in ruptured and high-risk plaque tissues, and M-HFn staining displayed a significant correlation with plaque vulnerability (r= 0.89, P< 0.0001).Tao Wang Jiuyang He Demin Duan Bing Jiang Peixia Wang Kelong Fan Minmin Liang Xiyun Yan 2019Nano Research2019,12,4:1
14Application of liposomal technologies for delivery of platinum analogs in oncology显示文摘Andrew Wang Chunbai He Demin Liu Wenbin Lin 2013International Journal of Nanomedicine (default)2013,,:1
15Influence of calcination temperature on leaching rate of aluminum and iron impurities in oil shale ash显示文摘Xu Yingmei He Demin Wang Dongrnei 2009Oil Shale2009,26,2:1
16Investigation of mineral composition of oil shale显示文摘Wang Dongmei Xu Yingmei He Demin 2009Asia-Pac J Chem Eng2009,4,5:1
17Characterization of oil shale processing residues and separated products显示文摘Xu Yingmei He Demin Jiang Huiming 2009Oil Shale2009,26,4:1
18Preparation of amorphous silica from oil shale residue and surface modification by silane coupling agent显示文摘Xu Yingmei Qi Ji He Demin 2010Oil Shale2010,27,1:1
19Electron-ion collider in China显示文摘Lepton scattering is an established ideal tool for studying inner structure of small particles such as nucleons as well as nuclei.As a future high energy nuclear physics project,an Electron-ion collider in China(EicC)has been proposed.It will be constructed based on an upgraded heavy-ion accelerator,High Intensity heavy-ion Accelerator Facility(HIAF)which is currently under construction,together with a new electron ring.The proposed collider will provide highly polarized electrons(with a po-larization of 80%)and protons(with a polarization of 70%)with variable center of mass energies from 15 to 20 GeV and the luminosity of(2–3)×1033 cm^(−2)·s^(−1).Polarized deuterons and Helium-3,as well as unpolarized ion beams from Carbon to Uranium,will be also available at the EicC.The main foci of the EicC will be precision measurements of the structure of the nucleon in the sea quark region,including 3D tomography of nucleon;the partonic structure of nuclei and the parton interaction with the nuclear environment;the exotic states,especially those with heavy flavor quark contents.In addition,issues fundamental to understanding the origin of mass could be addressed by measurements of heavy quarkonia near-threshold production at the EicC.In order to achieve the above-mentioned physics goals,a hermetical detector system will be constructed with cutting-edge technologies.This document is the result of collective contributions and valuable inputs from experts across the globe.The EicC physics program complements the ongoing scientific programs at the Jefferson Laboratory and the future EIC project in the United States.The success of this project will also advance both nuclear and particle physics as well as accelerator and detector technology in China.Daniele PAnderle Valerio Bertone Xu Cao Lei Chang Ningbo Chang Gu Chen Xurong Chen Zhuojun Chen Zhufang Cui Lingyun Dai Weitian Deng Minghui Ding Xu Feng Chang Gong Longcheng Gui Feng-Kun Guo Chengdong Han Jun He Tie-Jiun Hou Hongxia Huang Yin Huang KrešImir KumeričKi LPKaptari Demin Li Hengne Li Minxiang Li Xueqian Li Yutie Liang Zuotang Liang Chen Liu Chuan Liu Guoming Liu Jie Liu Liuming Liu Xiang Liu Tianbo Liu Xiaofeng Luo Zhun Lyu Boqiang Ma Fu Ma Jianping Ma Yugang Ma Lijun Mao Cédric Mezrag HervéMoutarde Jialun Ping Sixue Qin Hang Ren Craig DRoberts Juan Rojo Guodong Shen Chao Shi Qintao Song Hao Sun PawełSznajder Enke Wang Fan Wang Qian Wang Rong Wang Ruiru Wang Taofeng Wang Wei Wang Xiaoyu Wang Xiaoyun Wang Jiajun Wu Xinggang Wu Lei Xia Bowen Xiao Guoqing Xiao Ju-Jun Xie Yaping Xie Hongxi Xing Hushan Xu Nu Xu Shusheng Xu Mengshi Yan Wenbiao Yan Wencheng Yan Xinhu Yan Jiancheng Yang Yi-Bo Yang Zhi Yang Deliang Yao Zhihong Ye Peilin Yin C-PYuan Wenlong Zhan Jianhui Zhang Jinlong Zhang Pengming Zhang Yifei Zhang Chao-Hsi Chang Zhenyu Zhang Hongwei Zhao Kuang-Ta Chao Qiang Zhao Yuxiang Zhao Zhengguo Zhao Liang Zheng Jian Zhou Xiang Zhou Xiaorong Zhou Bingsong Zou Liping Zou 2021Frontiers of physics2021,16,6:1
20Pyrolysis and Co- Pyrolysis Of Chinese Longkou Oil Shale and Mongolian Huolin- he lighit显示文摘HE Demin GUAN Jun HU Haoquan 2015Oil Shale2015,32,2:1
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