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Theoretical & Applied Mechanics Letters 2022年第6期12卷 409-418页

作者： Zhangyu Ren Qi Zhang Yang ju Huimin xie School of Emergency Management and Safety Engineering China University of Mining and Technology at BeijingBeijing 100083China State Key Laboratory of Coal Resources and Safe mining China University of Mining and Technology at BeijingBeijing 100083China Qiantang Science and Technology Innovation Center Zhejiang 310018China School of Aerospace Engineering Tsinghua UniversityBeijing 100084China

The quantitative characterization of the full-field stress and displacement is significant for analyzing the failure and instability of engineering *** optical measurement techniques such as photoelasticity,moiréand digital image correlation methods have been developed to achieve this ***,these methods are difficult to incorporate to determine the stress and displacement fields simultaneously because the tested models must contain particles and grating for displacement measurement;however,these elements will disturb the light passing through the tested models using *** this study,by combining photoelasticity and the sampling moirémethod,we developed a method to determine the stress and displacement fields simultaneously in a three-dimensional(3D)-printed photoelastic model with orthogonal ***,the full-field stress was determined by analyzing 10 photoelastic patterns,and the displacement fields were calculated using the sampling moiré*** results indicate that the developed method can simultaneously determine the stress and displacement fields.

关键词： Stress fields Displacement fields Photoelasticity Sampling moirémethod 3D printing technique

Entanglement Dynamics of Multipartite Systems Under Decoherence from a Spin Environment

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Communications in Theoretical Physics 2006年第1X期46卷 73-76页

作者： xie Guo-Qiu WANG An-min MA Xiao-San Department of Modern Physics University of Science and Technology of China Hefei 230026 China Department of Electronic Information and Engineering Huangshan University Huangshan 245000 China

The entanglement evolution of multipartite quantum states under a spin environment is analyzed. Due to interaction, the extent to which the entanglement vanishes depends not only on the size of system and the structure of quantum states, but also on the exchange couplings with environment. The decoherence-free subspaces have been identified by using the linear entropy.

关键词： entanglement dynamics decoherence a spin environment

Atomic Coherent Trapping and Properties of Trapped Atom

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Communications in Theoretical Physics 2006年第3X期46卷 556-560页

作者： YANG Guo-Jian XIA Li-Xin xie min Department of Physics Beijing Normal University Beijing 100875 China

Based on the theory of velocity-selective coherent population trapping, we investigate an atom-laser system where a pair of counterpropagating laser fields interact with a three-level atom. The influence of the parametric condition on the properties of the system such as velocity at which the atom is selected to be trapped, time needed for finishing the coherent trapping process, and possible electromagnetically induced transparency of an altrocold atomic medium, etc., is studied.

关键词： velocity selective coherent population trapping ultracold atom

Properties of New Holomorphic Mappings with Respect to Conic Domains

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Acta Mathematica Sinica,English Series 2021年第6期37卷 971-991页

作者： Yan Yan CUI Yong Hong xie He ju YANG Yu Ying QIAO College of Mathematics and Statistics Zhoukou Normal UniversityZhoukou 466001P.R.China College of Mathematics and Information Science Hebei Normal UniversityShijiazhuang 050024P.R.China College of Science Hebei University of Science and TechnologyShijiazhuang 050024P.R.China

This paper is mainly about holomorphic mappings associated with conic regions which are closely connected with k-ST(α).We introduce new subclasses of starlike(spirallike)functions,namely,S^(p)_(c)(k,α)(S^(p)_(c)(k,α,β)),and discuss their coefficient estimates and the Fekete–Szego–Goluzin’s *** we generalize S^(p)_(c)(k,α,β)on the unit ball B^(n) in C^(n),that is,k-conic spirallike mappings of typeβand orderα.We obtain the growth,covering and distortion theorems of the generalized *** that,we construct k-conic spirallike mappings of typeβand orderαon B^(n) through S_(c)(k,α,β)by the generalized Roper-Suffridge extension operators.

关键词： Holomorphic mappings coefficient estimates growth theorems Roper-Suffridge operators

Tumor microenvironment: driving forces and potential therapeutic targets for breast cancer metastasis

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Chinese Journal of Cancer 2017年第3期36卷 121-130页

作者： Hong-Yan xie Zhi-min Shao Da-Qiang Li Shanghai Cancer Center and Institutes of Biomedical Sciences Shanghai Medical CollegeFudan UniversityShanghai 200032P.R.China Cancer Institute Shanghai Medical CollegeFudan UniversityShanghai 200032P.R.China Department of Oncology Shanghai Medical CollegeFudan UniversityShanghai 200032P.R.China Key Laboratory of Breast Cancer in Shanghai Shanghai Medical CollegeFudan UniversityShanghai 200032P.R.China Department of Breast Surgery Shanghai Medical CollegeFudan UniversityShanghai 200032P.R.China

Distant metastasis to specific target organs is responsible for over 90%of breast cancer?related deaths,but the underlying molecular mechanism is *** evidence suggests that the interplay between breast cancer cells and the target organ microenvironment is the key determinant of organ?specific metastasis of this lethal ***,we highlight new findings and concepts concerning the emerging role of the tumor microenvironment in breast cancer metastasis;we also discuss potential therapeutic intervention strategies aimed at targeting compo?nents of the tumor microenvironment.

关键词： Breast cancer Invasion and metastasis Tumor microenvironment

Price Competition in the Random Coefficient Attraction Choice Models with Linear Cost

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Journal of the Operations Research Society of China 2022年第3期10卷 623-658页

作者： Xiao-Yi Feng Yang-Yang xie Hou-min Yan Department of Model Risk Management The Hongkong and Shanghai Banking Corporation LimitedHong KongChina International Institute of Finance School of ManagementUniversity of Science and Technology of ChinaHefei230026AnhuiChina Department of Management Sciences College of BusinessCity University of Hong KongHong KongChina

We study the pricing game between competing retailers under various random coefficient attraction choice *** characterize existence conditions and structure properties of the ***,we explore how the randomness and cost parameters affect the equilibrium prices and profits under multinomial logit(MNL),multiplicative competitive interaction(MCI)and linear attraction choice ***,with bounded randomness,for the MCI and linear attraction models,the randomness always reduces the retailer’s ***,for the MNL model,the effect of randomness depends on the product’s value *** high-end products(i.e.,whose value gap is higher than a threshold),the randomness reduces the equilibrium profit,and vice *** results suggest high-end retailers in MNL markets exert more effort in disclosing their exact product performance to *** also reveal the effects of randomness on retailers’pricing *** results help retailers in making product performance disclosure and pricing decisions.

关键词： Pricing game Random coefficient choice models Equilibrium existence Effects of randomness

Peginterferon alfa-2a for the treatment of chronic hepatitis C in the era of direct-acting antivirals

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Hepatobiliary & Pancreatic Diseases International 2017年第5期16卷 470-479页

作者： Yan Huang ming-Hui Li min Hou Yao xie Shanghai Roche Pharmaceuticals Ltd. Shanghai 201203 China Liver Disease Center Beijing Ditan Hospital Capital Medical University Beijing 100015 China

BACKGROUND: The availability of novel direct-acting antivirals (DAAs) represents a new era of curative hepatitis C virus (HCV) treatment, with over 95% of patients infected with HCV genotype 1 achieving sustained virological response (SVR). Nevertheless, the majority of patients globally are unable to access these treatments because of cost and infrastructure constraints and, thus, remain untreated and uncured. DATA SOURCE: Relevant articles of peginterferon (PegIFN)-based treatments in HCV and sofosbuvir-based treatments, simeprevir, daclatasvir/asunaprevir, ritonavir-boosted paritaprevir/ombitasvir/dasabuvir, and grazoprevir/elbasvir, were searched in PubMed database, including general population and special population. RESULTS: PegIFN in combination with ribavirin remains an important and relevant option for some patients, achieving SVR rates of up to 79% in genotype 1 and 89% in genotype 2 or 3 infections, which increases for patients with favorable IL28B genotypes. Triple therapy of DAA plus PegIFN/ribavirin is effective in treating difficult-to-cure patients infected with HCV genotype 3 or with resistance-associated variants. Owing to its long history in HCV management, the efficacy, tolerability and long-term outcomes associated with PegIFN alfa-2a are well established and have been validated in large-scale studies and in clinical practice for many populations. Furthermore, emerging data show that IFN-induced SVR is associated with lower incidences of hepatocellular carcinoma compared with DAAs. On the contrary, novel DAAs have yet to be studied in special populations, and long-term outcomes, particularly tumor development and recurrence in patients with cirrhosis and/or hepatocellular carcinoma, and reactivation of HBV in dually infected patients, are still unclear. CONCLUSION: In this interferon-free era, PegIFN-based regimens remain a safe and effective option for selected HCV patients.

关键词： chronic hepatitis C direct-acting antivirals hepatitis C virus peginterferon alfa-2a ribavirin

Unravelling the effects of complexation of transition metal ions on the hydroxylation of catechol over the whole pH region

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Journal of Environmental Sciences 2022年第5期34卷 392-402页

作者： Zexiu An Jianfei Sun Qiong Mei BoWei mingxue Li ju xie Maoxia He Qiao Wang Environment Research Institute Shandong UniversityQingdao 266237China School of Environmental and Materials Engineering Yantai UniversityYantai 264005China College of Safety and Environmental Engineering Shandong University of Science and TechnologyQingdao 266590China School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China

Catechol pollutants(CATPs)serving as chelating agents could coordinate with many metal ions to form various CATPs-metal *** information is available on the effects of complexation of metal ions on CATPs *** work presents a systematical study of·OH-mediated degradation of catechol and catechol-metal complexes over the whole pH range in advanced oxidation processes(AOPs).Results show that the pH-dependent complexation of metal ions(Zn^(2+),Cu^(2+),Ti^(4+)and Fe^(3+))promotes the deprotonation of catechol under neutral and even acidic *** radical adduct formation(RAF)reactions are both thermodynamically and kinetically favorable for all dissociation and complexa-tion species,and-OH/-O-group-containing C positions are more vulnerable to·OH *** kinetic results show that the complexation of the four metal ions offers a wide pH range of effectiveness for catechol *** pH 7,the apparent rate constant(k_(app))values for different systems follow the order of catechol+Ti^(4+)≈catechol+Zn^(2+)>catechol+Cu^(2+)>catechol+Fe^(3+)>*** mechanistic and kinetic results would greatly improve our understanding of the degradation of CATPs-metal and other organics-metal complexes in *** toxicity assessment indicates that the·OH-based AOPs have the ability for decreasing the toxicity and increasing the biodegradability during the processes of catechol degradation.

关键词： Catechol Metal ions Complexation pH Degradation

Silazyl-Lithiums: A kind of new Initiators for the Anionic Non- equilibrium Ring-opening Polymerization of Octamethylcyclotetrasiloxane (D_4)

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Chinese Chemical Letters 2002年第12期13卷 1174-1177页

作者： Shun Xing SU Zhi Jie ZHANG Zhi min ZHENG Ze min xie State Key Laboratory of Engineering Plastics Center for Molecular ScienceInstitute of Chemistrythe Chinese Academy of SciencesBeijing 100080

The initiation reactions in the anionic non-equilibrium polymerization of octamethy- lcyclotetrasiloxane (D4) initiated by silazyllithiums were investigated. It was found that the structure of the substituents on the... 详细信息

关键词： Anionic non-equilibrium polymerization polysiloxane silazyl-lithiums.

Detection,isolation,and identification of cadmium-resistant bacteria based on PCR-DGGE

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Journal of Environmental Sciences 2007年第9期19卷 1114-1119页

作者： HU Qing DOU min-na QI Hong-yan xie Xiang-ming ZHUANG Guo-qiang YANG min Department of Environmental Biotechnology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China. Biology Science and Technology College Beijing Forestry University Beijing 100083 China

This study focused on the screening of cadmium-resistant bacterial strains from Pb-Zn tailing. We investigated the diversity of microbial community inhabiting Dong-san-cha Pb-Zn tailing in Beijing, China, by polymerase chain reaction-denaturing gradient gel electrophoresis （DGGE） of 16S rRNA gene of bacterial strain, and found two dominant strains in the DGGE profile. Using special culture media, we isolated two strong cadmium-resistant bacterial strains. On the basis of morphological, physiological, and biochemical characteristics, BIOLOG, and 16S rDNA sequencing, the two strains were identified as Bacillus cereus and Enterobacter cloacae. minimal inhibitory concentrations （MICs） of heavy metals for the bacteria were determined. E. cloacae showed higher MIC values for heavy metals and a larger range of antibiotic resistance than B. cereus.

关键词： Bacillus cereus Enterobacter cloacae PCR-DGGE cadmium resistance antibiotic resistance