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Calcium carbonate cry.tallization controlled by.functional groups： A mini-review

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Frontiers of Materials Science 2013年第1期7卷 62-68页

作者： Hua DENG Xing-Can SHEN xiu-Mei WANG Chang DU State Key.Laboratory.of New Ceramics and Fine Processing Department of Materials Science and Engineering Tsinghua University Beijing 100084 China Key.Laboratory.for the Chemistry.and Molecular Engineering of Medicinal Resources School of Chemistry and Chemical Engineering Guangxi Normal University Guilin 541004 China School of Materials Science and Engineering South China University of Technology Guangzhou 510641 China

Various functional groups have been suggested to play.essential roles on biomineralization of calcium carbonate (CaCO3) in natural sy.tem. 2D and 3D models of regularly.arranged functional groups have been established to investigate their effect on CaCO3 cry.tallization. This mini-review summarizes the recent progress and the future development is prospected.

关键词： functional group biomineralization cry.tallization CaCO3

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高功率脉冲磁控溅射的阶段性放电特征

物理学报 2014年第17期63卷 196-204页

作者：吴忠振田修波李春伟 Ricky.K.y.Fu 潘锋朱剑豪北京大学深圳研究生院新材料学院深圳518055 哈尔滨工业大学先进焊接与连接国家重点实验室哈尔滨150001 香港城市大学物理与材料科学系

本文从放电靶电流出发,采用一种新的研究方法,即将靶电流分解为多个代表具体放电特性的特征参数,全面而系统的研究了不同的工作气压条件下,靶电流各特征参数随靶电压的增加而进行的演化.结果发现高功率脉冲磁控溅射技术(HPPMS)放电靶电... 详细信息

本文从放电靶电流出发,采用一种新的研究方法,即将靶电流分解为多个代表具体放电特性的特征参数,全面而系统的研究了不同的工作气压条件下,靶电流各特征参数随靶电压的增加而进行的演化.结果发现高功率脉冲磁控溅射技术(HPPMS)放电靶电流在靶电压由低向高增加的过程中,出现靶电流峰值和平台值的交替变化,体现出明显的阶段性放电特征,且不同的放电阶段在不同气压下出现一定的移动,会在测量范围内出现某些放电阶段的缺失.本文还通过等离子体发射光谱对HPPMS放电靶前等离子体测量发现五个不同的放电阶段分别主要对应氩原子、铬原子、氩离子、铬离子和氩、铬高价离子的放电,但不同的放电条件下相邻的阶段会出现一定程度的交叠.

关键词：高功率脉冲磁控溅射放电靶电流工作气压阶段性放电

Phy.ical design and multi-particle simulations of a compact IH-DTL with KONUS beam dy.amics for proton therapy

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Nuclear Science and Techniques 2020年第7期31卷 12-24页

作者： Jian Qiao xiu-Cui Xie De-Ming Li y.e-Hu Pu Shanghai Institute of Applied Phy.ics Chinese Academy of SciencesShanghai 201800China University.of the Chinese Academy.of Sciences Beijing 100049China Shanghai APACTRON Particle Equipment Company.Ltd. Shanghai 210800China

A compact room-temperature inter-digital H-mode(IH)drift tube linac(DTL)with Kombinierte Null Grad Struktur beam dy.amics is proposed in this *** proposed IH-DTL,which operates at 325 MHz,accelerates 18 mA proton particles from 3.0 to 7.0 MeV as part of a proton sy.chrotron-based therapy.*** is composed of two main sections,namely.a bunching section(-30°)and accelerating section(0°).There is no transverse focusing element inside the cavity.which increases the acceleration gradient and reduces the cavity.length and power *** our phy.ical designs,LORASR code is utilized for beam dy.amics design and multi-particle *** sy.chronous particle energy.injection phase,and acceleration voltage of each gap are optimized carefully.to increase transmission efficiency.while minimizing beam emittance growth and beam *** total length of the cavity.is 0.82 m and the acceleration gradient reaches 4.88 MV/m,resulting in a transmission efficiency.of 100%and beam emittance growth less than10%.The details of the specific work undertaken in this study.are presented in this paper.

关键词： bunch beam particle

Improvement on Quantum Secure Direct Communication with W State in Noisy.Channel

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Communications in Theoretical Phy.ics 2009年第2期51卷 232-234页

作者： DONG Li xiu Xiao-Ming GAO y.-Jun CHI Feng Department of Phy.ics Bohai University Jinzhou 121000 China

An improvement （y.protocol） [Commun. Theor. Phy.. 49 （2008） 103] on the quantum secure direct communication with W state （C-protocol） [Chin. Phy.. Lett. 23 （2006） 290] is proposed by.y.an et al. The quantum bit error rate induced by.eavesdropper is 4.17% in C-protocol and 6.25% in y.protocoL In this paper, another improvement on C-protocol is given. The quantum bit error rate of the eavesdropping will increase to 8.75%, which is 1.1 times larger than that in C-protocol and 0.4 times larger than that in y.protocol.

关键词： quantum cry.tography quantum secure direct communication W state

Construction of an immune-related gene signature for overall survival prediction and immune infiltration in gastric cancer

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World Journal of Gastrointestinal Oncology 2024年第3期16卷 919-932页

作者： Xiao-Ting Ma xiu Liu Kai Ou Lin y.ng Department of Medical Oncology Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China

BACKGROUND Treatment options for patients with gastric cancer(GC)continue to improve,but the overall prognosis is *** use of PD-1 inhibitors has also brought benefits to patients with advanced GC and has gradually.become the new standard treatment option at present,and there is an urgent need to identify.valuable biomarkers to classify.patients with different characteristics into *** To determined the effects of differentially.expressed immune-related genes(DEIRGs)on the development,prognosis,tumor microenvironment(TME),and treatment response among GC patients with the expectation of providing new biomarkers for personalized treatment of GC *** Gene expression data and clinical pathologic information were downloaded from The Cancer Genome Atlas(TCGA),and immune-related genes(IRGs)were searched from *** were extracted from the intersection of the differentially.expressed genes(DEGs)and IRGs *** enrichment pathway. of key.genes were obtained by.analy.ing the Ky.to Ency.lopedia of Genes and Genomes(KEGGs)and Gene Ontology.GO)*** identify.genes associated with prognosis,a tumor risk score model based on DEIRGs was constructed using Least Absolute Shrinkage and Selection Operator and multivariate Cox *** tumor risk score was divided into high-and lowrisk *** entire cohort was randomly.divided into a 2:1 training cohort and a test cohort for internal validation to assess the feasibility.of the risk *** infiltration of immune cells was obtained using‘CIBERSORT,’and the infiltration of immune subgroups in high-and low-risk groups was *** GC immune score data were obtained and the difference in immune scores between the two groups was *** We collected 412 GC and 36 adjacent tissue samples,and identified 3627 DEGs and 1311 IRGs.A total of 482 DEIRGs were *** analy.is showed that DEIRGs were mainly.distributed in immunoglobulin complexes,receptor ligand activity.and s

关键词： Differentially.expressed immune-related gene Immunotherapy Gastric cancer Risk score

A Survey.of the Research Status of Pedestrian Dead Reckoning Sy.tems Based on Inertial Sensors

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International Journal of Automation and computing 2019年第1期16卷 65-83页

作者： y.an Wu Hai-Bing Zhu Qing-xiu Du Shu-Ming Tang Institute of Automation Chinese Academy of Sciences University.of Chinese Academy.of Sciences

With the development of micro-electromechanical sy.tems(MEMS), miniaturized, low-power and low-cost inertial measurement units(IMUs) have been widely.integrated into mobile terminals and smart wearable devices. This provides the prospect of a broad application for the inertial sensor-based pedestrian dead-reckoning(IPDR) sy.tems. Especially.for indoor navigation and indoor positioning, the IPDR sy.tems have many.unique advantages that other methods do not have. At present, a large number of technologies and methods for IPDR sy.tems are proposed. In this paper, we have analy.ed and outlined the IPDR sy.tems based on about 80 documents in the field of IPDR in recent y.ars. The article is structured in the form of an introduction-elucidation-conclusion framework. First, we proposed a general framework to explore the structure of an IPDR sy.tem. Then, according to this framework, the IPDR sy.tem was divided into six relatively.independent sub-problems, which were discussed and summarized separately. Finally. we proposed a graph structure of IPDR sy.tems, and a sub-directed graph, formed by.selecting a combined path from the start node to the end node, skillfully.constitutes a technical route of one specific IPDR sy.tem. At the end of the article, we summarized some key.issues that need to be resolved before the IPDR sy.tems are widely.used.

关键词： Inertial measurement unit(IMU) pedestrian dead-reckoning indoor navigation technical route general framework

Study.on the kinetics of isomerization of some unsy.metrical bis(μ-alky.thio)hexacarbony.diiron by.NMR method

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Chinese Journal of Chemistry 1988年第1期6卷 21-28页

作者： ZHANG Qi-y.n ZHU Cheng-y.e SONG Li-Cheng CHEN Rong-Ti y.T.Chen Department of Chemistry.Nankai University.TianjinLU xiu-Qing LI Guo-Wei Institute of Elemento-organie Chemistry.Nankai University.Tianjin Department of Chemistry Nankai University Tianjin Institute of Elemento‐organic Chemistry Nankai University Tianjin

The kinetics of the isomerization of（μ-PhCHS）(μ-RS)Fe（CO）（R=Me,Et）and（μ-PhCHS）(μ-t-BuS)Fe（CO）has been studied by.conventional and dy.amic NMR methods respec-tively.A possible mechanism for the reaction h... 详细信息

关键词： Study.on the kinetics of isomerization of some unsy.metrical bis alky.thio)hexacarbony.diiron by.NMR method NMR

Effect of Temperature-responsive Solution Behavior of PNIPAM-bPPEOMA-b-PNIPAM on Its Inclusion Complexation with α-Cy.lodextrin

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Chinese Journal of Poly.er Science 2015年第3期33卷 456-464页

作者： Jun-jie Xiao xiu-bing Li 王曦 Chun-wang y. Sheng-pei Su The Key.Lab for Fine Processing of Resources and Advanced Materials of Hunan Province Hunan Normal University National & Local Joint Engineering Lab. for New Petro-chemical Materials and Fine Utilization of Resources Hunan Normal University

The effect of temperature-responsive solution behavior of PNIPAM-b-PPEOMA-b-PNIPAM on its inclusion complexation with α-cy.lodextrin was studied. The triblock poly.er was prepared by.reversible addition-fragmentation chain transfer （RAFT） poly.erization and formed inclusion complexes （ICs） after selective threading of the PEO segment of the triblock poly.er through the cavities of α-CD units. For comparison, PPEOMA homopoly.er was prepared and the inclusion complexation with α-CD was also studied. The ICs were prepared with a-CD when the poly.er was in different conformations by.changing the temperature, and the formed ICs were characterized by.XRD, ^1H-NMR, TGA and DSC. The solutions of the ICs show temperature-responsive clear/turbid transition or fluidic emulsion/gel transition depending on the concentration of the α-CD added, and the stoichiometry.determined by.^1H-NMR and TGA indicates that the stoichiometry.of EO to α-CD of the resulted ICs increases with increasing of temperature.

关键词： Temperature-responsibility Comblike triblock poly.er Inclusion complexes.

Researches of soft-sediment deformation structures and seismites in China—A brief review

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Journal of Palaeogeography 2016年第4期5卷 311-317页

作者： Zeng-Zhao Feng Zhi-Dong Bao xiu-Juan Zheng y.an Wang China University.of Petroleum(Beijing)

During the past 30 y.ars （1987-2016）, a great progress has been made in researches of soft-sediment deformation structures （SSDS）, seismites and pataeoearthquakes in China. However, the research thought of this academic fietd is not open enough. It is atmost with one viewpoint or one voice, i.e., atmost art the papers pubtished in journals of China considered the lay.rs with SSDS as seismites. On the other hand, the authors are very.glad to learn that the professors and students of China University.of Petroleum （East China） have proposed different academic viewpoints on the origin of SSDS in Lingshan Istand, Qingdao, Shandong Province, China. It is a very.active academic atmosphere. The authors＇ ideas are as follows：（1） The SSDS are sedimentary.structures with multi-origin. The term ＂SSDS＂ is a good sedimentary.and geological term and shoutd be utilized continuat[y. （2） The term ＂seismites＂ is a term which is definitety.assigned to the lay.rs with SSDS induced by.earthquakes. It is one ty.e of the tay.rs with SSDS. It is not equal to SSDS. （3） Some geotogists suggested obsoleting the term ＂seismites＂. These suggestions are rational However, since the term ＂seismites＂ has been utilized for a long time in China and worldwide, to obsolete this term should be discussed and agreement should be acquired from numerous geologists in China and worldwide. It may.be suitable that let the geological practice decide whether to obsolete it or not. （4） Hopefully. further progress will be made in the researches of SSDS.

关键词： Soft-sediment deformation structures (SSDS) Multi-origin Seismites Pataeoearthquake Ling-shan Island China