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Quantum thermal field fluctuation induced corrections to the interaction between two ground-state atoms

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Communications in Theoretical Physics 2022年第12期74卷 35-44页

作者： Shijing Cheng wenting zhou Hongwei Yu School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUCASHangzhou 310024China School of Physical Sciences University of Chinese Academy of SciencesNo.19A Yuquan RoadBeijing 100049China Department of Physics School of Physical Science and TechnologyNingbo UniversityNingbo 315211China Department of Physics and Synergetic Innovation Center for Quantum Effect and Applications Hunan Normal UniversityChangsha 410081China

We generalize the formalism proposed by Dalibard, Dupont-Roc, and Cohen-Tannoudji(the DDC formalism) in the fourth order for two atoms in interaction with scalar fields in vacuum to a thermal bath at finite temperature T, and then calculate the interatomic interaction energy of two ground-state atoms separately in terms of the contributions of thermal fluctuations and the radiation reaction of the atoms and analyze in detail the thermal corrections to the van der Waals and Casimir–Polder interactions. We discover a particular region, i.e. 4(λ3β)(1/2) ■ L■λwith L, β and λ denoting the interatomic separation, the wavelength of thermal photons and the transition wavelength of the atoms respectively, where the thermal corrections remarkably render the van der Waals force, which is usually attractive, repulsive, leading to an interesting crossover phenomenon of the interatomic interaction from attractive to repulsive as the temperature increases. We also find that the thermal corrections cause significant changes to the Casimir–Polder force when the temperature is sufficiently high, resulting in an attractive force proportional to TL-3in the λ ■ β ■ L region, and a force that can be either attractive or repulsive and even vanishing in the β ■ λ ■ L region depending on the interatomic separation.

关键词： quantum thermal fluctuations van der Waals interaction Casimir-Polder interaction the fourth-order DDC formalism

Petrogenesis Significance of Chromian Spinels from Northeastern Jiangxi Province Ophiolite(NEJXO), China: Paleogeodynamic Implications

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Acta Geologica Sinica(English Edition) 2015年第A2期89卷 18-19页

作者： GUO Guolin FAN Xiujun YANG Jingsui LIU Xiaodong ZHANG Yong zhou wenting Fundamental Science on Radioactive Geology and Exploration Technology Laboratory East China Institute ofTechnology Nanchang Jiangxi 330013 China Geological Survey of Jiangxi Province Nanchang Jiangxi 330030 China CARMA State Key Laboratory of Continental Tectonic and Dynamics Institute of Geology Chinese Academy ofGeological Sciences Beijing 10003 7 China Team 209 of Yunnan Nuclear Industry Kunming Yunnan 650000 China

The northeastern Jiangxi Province ophiolite is located in the SE margin of the Yangtze Block, along the Zhangshudun （Yiyang） Xingangshan （Dexing）, ophiolite belt extending northeast for about 100kin （zhou, 1989; Li et al., 1997）. The original sequence of the NE Jiangxi ophiolite suite has been structurally disrupted and enclosed by a strongly foliated flysch sequence. Most of the dismembered peridotites of NEJXO are highly serpentinized, requiring care in applying petrochemistry and geochemistry to distinguish their tectonic setting,

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Surface Coordination Decouples Hydrogenation Catalysis on Supported Metal Catalysts

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CCS Chemistry 2023年第5期5卷 1215-1224页

作者： Qingyuan Wu wenting zhou Hui Shen Ruixuan Qin Qiming Hong Xiaodong Yi Nanfeng Zheng State Key Laboratory for Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy MaterialsNational&Local Joint Engineering Research Center for Preparation Technology of NanomaterialsCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005 Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361102

Supported metal catalysts integrating advantages of catalytic hydrogenation and stoichiometric reduction are highly desirable for the green production of fine *** catalytic hydrogenation into H_(2)activation and selective reduction taking place at different locations is expected to provide an effective strategy to fabricate such catalyst ***,we report a decoupled hydrogenation system by modifying Pt catalysts supported on reducible In2O3 with ethylenediamine(EDA).The system exhibits good catalytic performance in oximes production from nitroalkanes,an industrially important reaction,by employing H_(2).Systematic studies demonstrate that the surface coordination of EDA on Pt is crucial to passivate the Pt surface from nitro hydrogenation without inhibiting H_(2)*** activated H_(2)species can then transfer and reduce the In_(2)O_(3)support in situ to generate sustainable stoichiometric reducing agents for the chemoselective reduction of *** upon the mechanistic understanding,a sustainable strategy for the production of oximes has been successfully fabricated.

关键词： hydrogenation catalysis surface coordination reducible support selective hydrogenation of nitro compounds heterogeneous catalysis

Antitumor effects of a novel photosensitizer-mediated photodynamic therapy and its influence on the cell transcriptome

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Oncology Research 2024年第5期32卷 911-923页

作者： JINGJING CHEN DAN WANG ZEQUN WANG MENGYUAN HAN HOUQING YIN wenting zhou RIBAI YAN YAN PAN Department of Pharmacology School of PharmacyChangzhi Medical CollegeChangzhiChina2 Department of PharmacologySchool of Basic Medical SciencesHealth Science CenterPeking UniversityBeijingChina3 Beijing Key Laboratory of Tumor Systems BiologyPeking UniversityBeijingChina4 Department of PharmacologyXinjiang Medical UniversityUrumqiChina5 School of Pharmaceutical SciencesPeking UniversityBeijingChina

Photodynamic therapy(PDT)is a promising cancer *** study investigated the antitumor effects and mechanisms of a novel photosensitizer meso-5-[ρ-diethylene triamine pentaacetic acid-aminophenyl]−10,15,20-triphenyl-porphyrin(DTP)mediated PDT(DTP-PDT).Cell viability,reactive oxygen species(ROS),and apoptosis were measured with a Cell Counting Kit-8 assay,DCFH-DA fluorescent probe,and Hoechst staining,*** apoptosis-and autophagy-related proteins were examined using western *** sequencing was used to screen differentially expressed mRNAs(DERs),and bioinformatic analysis was performed to identify the major biological events after *** results show that DTP-PDT inhibited cell growth and induced ROS generation in MCF-7 and SGC7901 *** ROS scavenger N-acetyl-L-cysteine(NAC)and the P38 MAPK inhibitor SB203580 alleviated DTP-PDT-induced ***-PDT induced cell apoptosis together with upregulated Bax and downregulated Bcl-2,which could also be inhibited by NAC or *** level of LC3B-Ⅱ,a marker of autophagy,was increased by DTP-PDT.A total of 3496 DERs were obtained after *** Ontology and Kyoto Encyclopedia of Genes and Genomes analyses indicated that DERs included those involved in cytosolic ribosomes,the nuclear lumen,protein binding,cell cycle,protein targeting to the endoplasmic reticulum,and ribosomal DNA *** Ontology and Reactome enrichment analyses indicated that DERs were associated with a variety of cancers and cell cycle ***-protein interaction results demonstrated that cdk1 and rps27a ranked in the top 10 interacting ***,DTP-PDT could inhibit cell growth and induce cell apoptosis and autophagy,partly through ROS and the P38 MAPK signaling *** associated with the cell cycle,ribosomes,DNA replication,and protein binding may be the key changes in DTP-PDT-mediated cytotoxicity.

关键词： Photodynamic therapy ROS Apoptosis Autophagy Bioinformatic analysis

Non-contact biomimetic mechanism for selective hydrogenation of nitroaromatics on heterogeneous metal nanocatalysts

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Science China Chemistry 2022年第4期65卷 726-732页

作者： wenting zhou Laiyang Li Ruixuan Qin Jiaxin Zhu Shengjie Liu Shiguang Mo Zaifa Shi Huihuang Fang Pengpeng Ruan Jun Cheng Gang Fu Nanfeng Zheng State Key Laboratory for Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy Materialsand Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361005China

While the enzymatic reduction of unsaturated compounds usually has high specificity,highly selective reduction processes are hardly realized by heterogeneous industrial catalysts,which is critical for the green production of many fine ***,we report an unexpected discovery of a biomimetic behavior of dicyandiamide(DICY)-modified Pt nanocatalysts for the green hydrogenation of a wide range of *** demonstrate that the surface modification by DICY not only prevents the direct contact of nitroaromatic reactants with Pt surface but also induces an effective non-contact hydrogenation mechanism mediated by protons and *** such a process,the DICY layer serves as a“semi-permeable membrane”to allow the permeation of H_(2) molecules for being activated into electrons and protons at the Pt-DICY *** the generation of separated protons and electrons,the nitro group with strong electrophilic properties can be hydrogenated through the electron transfer followed by the proton transfer,which is facilitated by the hydrogen bonding network formed by protonated *** unique mechanism makes it highly directional toward the hydrogenation of nitro groups without side *** to its capability to largely eliminate the waste generation,the developed Pt-DICY catalysts have been successfully applied for the green industrial production of many important aniline intermediates.

关键词： hydrogenation catalysis nitroaromatics proton/electron separation non-contact hydrogenation biomimetic mechanism

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An Epidemic of Hepatitis A--Liaoning Province,2020

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China CDC weekly 2020年第30期2卷 570-574页

作者： Jing Sun Yuanqiu Li Xing Fang Yan Wang Yinan Han Yang Liu Jingyuan Cao wenting zhou Hui Zheng Wenqing Yao Liaoning Provincial Center for Disease Control and Prevention ShenyangLiaoningChina National Immunization Program Chinese Center for Disease Control and PreventionBeijingChina Institute of Preventive Medicine China Medical UniversityShenyangLiaoningChina Dalian City Center for Disease Control and Prevention DalianLiaoningChina Dandong City Center for Disease Control and Prevention DandongLiaoningChina National Institute for Viral Disease Control and Prevention Chinese Center for DiseaseControl and PreventionBeijingChina

What is already known about this topic?Hepatitis A(HA)is caused by acute hepatitis A virus(HAV)infection and was once very common in *** the 2008 introduction of the HA vaccine into the national Expanded Program on Immunization(EPI),the incidence of reported HA in China decreased ***,HA epidemics still occur in Liaoning Province every 3–5 years,although with far fewer cases than in the pre-HA-vaccination *** is added by this report?Between January 1,2020 and March 18,2020,the number of reported cases of HA in Dalian and Dandong cities of Liaoning Province increased significantly compared with the same period in previous *** cases were sporadic,and cases were seen in nearly every *** increase in HA occurred one month after local fresh seafood became available with most cases being among adults.A casecontrol study showed that consuming raw or undercooked seafood,clams,snapping shrimp,and oysters were significantly associated with the increase in *** are the implications for public health practices?Strengthening health education for residents to avoid consumption of raw seafood and encouraging HAV vaccination of adults aged 20 to 54 years are important to prevent periodic HAV endemic *** multisectoral cooperation must be emphasized on HA surveillance in areas with a high prevalence of HA.

关键词： consuming Liaoning vaccination

Surface Ligand Evolution:Sulfur-Directed Covalent Bonding of PPh_(3) on Pd_(4)S with Improved Semi-hydrogenation of Terminal Alkynes

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Precision Chemistry 2024年第5期2卷 200-207页

作者： Wentong Jing Shiguang Mo Weijie Zhang wenting zhou Kunlong Liu Jie Wei Ruixuan Qin Nanfeng Zheng New Cornerstone Science Laboratory State Key Laboratory for Physical Chemistry of Solid SurfacesCollaborative Innovation Center of Chemistry for Energy Materialsand National&Local Joint Engineering Research Center of Preparation Technology of NanomaterialsCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China China Resources Cement Technology R&D(Guangxi)Co Ltd. Nanning 530008China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361102China

Surface modification of metallic nanocatalysts with organic ligands has emerged as an effective strategy to enhance catalytic selectivity,although offten at the expense of catalytic *** this study,we demonstrate a compelling approach by surface modifying Pd2S nanocrystals with PPhz ligands,resulting in a catalyst with excellent catalytic activity and durable selectivity for the semi-hydrogenation of terminal *** and theoretical investigations reveal that the presence of S sites on the Pd surface directs PPh_(3) ligands to preferentially form covalent bonds with S,creating distinctive surface S=PPh_(3) *** configuration induces a partial positive charge on Pd,facilitating hydrogen transfer and thus promoting catalytic ***,the covalent bond between the ligand and catalyst surface forms a robust network,ensuring ligand stability and increasing the hydrogenation energy barrier of ***,the Pd_(4)S@PPhz catalyst exhibits an improved catalytic selectivity with durability in terminal alkyne *** study introduces an effective strategy for designing selective hydrogenation catalysts with an enhanced performance.

关键词： Pd nanocatalysts surface modification selective hydrogenation catalytic stability alkyne semi-hydrogenation

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运动能力的遗传学研究进展

遗传 2014年第4期36卷 301-308页

作者：周文婷哈尔滨体育学院哈尔滨150001

个体间运动能力的差异受多种因素影响,其中环境和遗传因素可能起决定作用。2008年以来涌现了大量的运动能力遗传学研究,获得了一系列有意义的结果。文章以体力活动水平、肌肉力量及耐力水平3方面为重点,着重对涉及以上3方面遗传学研究... 详细信息

个体间运动能力的差异受多种因素影响,其中环境和遗传因素可能起决定作用。2008年以来涌现了大量的运动能力遗传学研究,获得了一系列有意义的结果。文章以体力活动水平、肌肉力量及耐力水平3方面为重点,着重对涉及以上3方面遗传学研究中的研究结果(样本大小、测试表型的质量优劣、运动实验计划的质量高低、研究设计的合理性和新颖性、实验测试的控制情况以及基因分型情况等)进行了比较分析,以期为研究者提供参考。

关键词：运动能力体力活动水平肌肉力量耐力水平

A network pharmacology-based approach to analyze potential targets of Ocimum basilicum L.

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A network pharmacology-based approach to analyze potential t...