检索结果-南通市图书馆

Finite Temperature Magnetism in the Triangular Lattice Antiferromagnet KErTe_(2)

在线全文

学校读者我要写书评

暂无评论

chinese Physics Letters 2024年第9期41卷 140-150页

作者： Weiwei Liu Zheng Zhang Dayu Yan jianshu Li Zhitao Zhang jianting ji Feng jin Youguo shi Qingming Zhang Department of Physics Renmin University of ChinaBeijing 100872China Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field LaboratoryChinese Academy of SciencesHefei 230031China School of Physical Science and Technology Lanzhou UniversityLanzhou 730000China

After the discovery of the AREch2(A=alkali or monovalent ions,RE=rare-earth,ch=chalcogen)triangular lattice quantum spin liquid(QSL)family,a series of its oxide,sulfide,and selenide counterparts has been consistently reported and extensively *** KErTe_(2) represents the initial synthesized telluride member,preserving its triangular spin lattice,it was anticipated that the substantial tellurium ions could impart more pronounced magnetic attributes and electronic structures to this material *** study delves into the magnetism of KErTe_(2) at finite temperatures through magnetization and electron spin resonance(ESR)*** on the angular momentum j after spin-orbit coupling(SOC)and symmetry analysis,we obtain the magnetic effective Hamiltonian to describe the magnetism of Er^(3+)in R3m space *** the mean-field approximation to the Hamiltonian,we can simulate the magnetization and magnetic heat capacity of KErTe_(2) in paramagnetic state and determine the crystalline electric field(CEF)parameters and partial exchange *** relatively narrow energy gaps between the CEF ground state and excited states exert a significant influence on the *** example,small CEF excitations can result in a significant broadening of the ESR linewidth at 2 *** the fitted exchange interactions,although the values are small,given a large angular momentum j=15/2 after SOC,they still have a noticeable effect at finite ***,the heat capacity data under different magnetic fields along the𝑐axis direction also roughly match our calculated results,further validating the reliability of our analytical *** derived parameters serve as crucial tools for future investigations into the ground state magnetism of KErTe_(2).The findings presented herein lay a foundation for exploration of the intricate magnetism within the triangular-lattice delafossite family.

关键词： triangular Hamiltonian magnetization

ANIPE配体促进的铜催化联烯与亚胺和联硼试剂的不对称碳硼化反应

在线全文

学校读者我要写书评

暂无评论

有机化学 2024年第6期44卷 1884-1896页

作者：刘晓东施世良中国科学院上海有机化学研究所金属有机化学国家重点实验室上海200032

发展了温和条件下铜催化联烯与亚胺、联硼试剂的非对映选择性和对映选择性的碳硼化反应.该策略基于手性ANIPE-铜催化剂,提供了一个简便而有效的合成含两个相邻立体中心的手性高烯丙基胺的方法,具有优秀的对映和非对映选择性.此外,以醛... 详细信息

发展了温和条件下铜催化联烯与亚胺、联硼试剂的非对映选择性和对映选择性的碳硼化反应.该策略基于手性ANIPE-铜催化剂,提供了一个简便而有效的合成含两个相邻立体中心的手性高烯丙基胺的方法,具有优秀的对映和非对映选择性.此外,以醛亚胺酯和酮亚胺酯为亲电试剂时,可以制备手性α-氨基酯类化合物.

关键词：氮杂环卡宾配体铜催化手性胺碳硼化

XMe - Xiamen Molecular Electronics Code:An Intelligent and Open-Source Data Analysis Tool for Single-Molecule Conductance Measurements

在线全文

学校读者我要写书评

暂无评论

chinese journal of chemistry 2024年第3期42卷 317-329页

作者： Zhichao Pan Gang Dong chi Shang Ruihao Li Tengyang Gao Luchun Lin Huicong Duan Xiaohui Li jie Bai Yilin Lai Wenfeng Wu jia shi junyang Liu Wenjing Hong State Key Laboratory of Physical chemistry of Solid Surfaces College of Chemistry and Chemical Engineering & Institute of Artificial IntelligenceXiamen UniversityXiamenFujian361005 China School of Artificial Intelligence Guilin University of Electronic TechnologyGuilinGuangxi541004 China

charge transport characterization of single-molecule junctions is essential for the fundamental research of single-molecule physical chemistry and the development towards single-molecule electronic devices and circuits. Among the single-molecule conductance characterization techniques,the single-molecule break junction technique is widely used in tens of worldwide research laboratories which can generate a large amount of experimental data from thousands of individual measurement cycles. However,data interpretation is a challenging task for researchers with different research backgrounds,and the different data analysis approaches sometimes lead to the misunderstanding of the measurement data and even reproducibility issues of the measurement. It is thus a necessity to develop a user-friendly all-in-one data analysis tool that automatizes the basic data analysis in a standard and widely accepted way. In this work,we present the XMe Code (Xiamen Molecular Electronics Code),an intelligent all-in-one data analysis tool for the comprehensive analysis of single-molecule break junction data. XMe code provides end-to-end data analysis that takes in the original experimental data and returns electronic characteristics and even charge transport mechanisms. We believe that XMe Code will promote the transparency of the data analysis in single-molecule electronics and the collaborations among scientists with different research backgrounds.

关键词： Molecular electronics Single-molecule studies Break junction Data science Software

Nanomedicine integrating the lipidic derivative of 5-fluorouracil,miriplatin and PD-L1 si RNA for enhancing tumor therapy

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

chinese chemical Letters 2024年第6期35卷 385-391页

作者： An Lu Yuhao Guo Yi Yan Lin Zhai Xiangyu Wang Weiran Cao Zijie Li Zhixia Zhao Yujie shi Yuanjun Zhu Xiaoyan Liu Huining He Zhiyu Wang jian-cheng Wang Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking UniversityBeijing 100191China Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics School of PharmacyTianjin Medical UniversityTianjin 300070China Department of Immuno-oncology The Fourth Hospital of Hebei Medical UniversityShijiazhuang 050011China Department of Pharmacy Clinical Trial Research CenterChina-Japan Friendship HospitalBeijing 100029China Laboratory of innovative formulations and pharmaceutical excipients Ningbo Institute of Marine MedicinePeking UniversityNingbo 315832China

Immunosuppressive microenvironments present critical problems in clinical *** regulate the tumor immune microenvironment for enhancing antitumor effect,a combination of immune checkpoint inhibitors(ICIs)with chemotherapeutics has been applied *** this study,miriplatin(MiPt),the lipidic derivative of 5-fluorouracil(Fu-OA),as well as the programmed death ligand 1(PD-L1)target si RNA(siPD-L1)were integrated into Lip-Pt/Fu@siPD-L1 nanoparticles(NPs)for *** vitro results showed that Lip-Pt/Fu@siPD-L1 NPs could exhibit effective siRNA gene silencing and promote the phagocytosis of tumor cells by ***,in vivo results revealed that LipPt/Fu@siPD-L1 NPs showed significantly higher anti-tumor efficiency than that of the physical mixing of Mi Pt,5-fluorouracil,and Lip@siPD-L1 NPs(delivery of siPD-L1 by liposomes).The best anti-tumor efficiency of Lip-Pt/Fu@siPD-L1 NPs resulted from the synergistic immunotherapeutic effects of Mi Pt and siPD-L1 based on the inhibition of CD47 expression and the downregulation of PD-L1 in tumor cells,which elicited a robust anti-tumor immune response through the activation of macrophage phagocytosis and immune checkpoint *** Lip-Pt/Fu@siPD-L1 NPs provide a potential strategy for tumor chemo-immunotherapy.

关键词： chemo-immunotherapy Immune checkpoint inhibition Gene silencing Miriplatin Macrophage phagocytosis Nanotechnology

e-Nash mean-field games for stochastic linear-quadratic systems with delay and applications

在线全文

学校读者我要写书评

暂无评论

Probability, Uncertainty and Quantitative Risk 2024年第3期9卷 389-404页

作者： Heping Ma Yu shi Ruijing Li Weifeng Wang School of Science Hubei University of TechnologyWuhan 430068China School of Science Wuhan University of TechnologyWuhan 430070China School of Statistics and Mathematics Guangdong University of Finance&EconomicsGuangdong 528100China School of Mathematics and Statistics South-Central Minzu UniversityWuhan 430074China

In this paper,we focus on mean-field linear-quadratic games for stochastic large-population systems with time *** e-Nash equilibrium for decentralized strategies in linear-quadratic games is derived via the consistency *** means of variational analysis,the system of consistency conditions can be expressed by forward-backward stochastic differential *** examples illustrate the sensitivity of solutions of advanced backward stochastic differential equations to time delays,the effect of the the population's collective behaviors,and the consistency of mean-field estimates.

关键词： Mean-field game Linear-quadratic problem Time delay Large-population e-Nash equilibrium

Evaluation of preoperative blood markers for predicting intraabdominal infection during colorectal cancer resection:A commentary on recent findings

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World journal of Gastrointestinal Surgery 2024年第10期16卷 3371-3373页

作者： shi-Yan Zhang juan chen Na Cai Department of Clinical Laboratory Fuding HospitalFujian University of Traditional Chinese MedicineFuding 355200Fujian ProvinceChina

This commentary evaluates the study by Liu et *** study investigates the predictive utility of the neutrophil-lymphocyte ratio,platelet-lymphocyte ratio,systemic immune-inflammation index,and carcinoembryonic antigen levels for post-operative intra-abdominal infection following colorectal cancer(CRC)*** study highlights the critical need for analyzing diverse patient demogra-phics and delves into the potential impact of various confounding factors on the predictive accuracy of these ***,the commentary advocates for the initiation of prospective studies aimed at validating and enhancing the clinical utility of these biomarkers in the context of CRC *** commentary aims to underscore the importance of broadening the research framework to include a wider patient demographic and more comprehensive factor analyses,thereby enriching the predictive model's applicability and relevance in clinical settings.

关键词： Neutrophil-lymphocyte ratio Platelet-lymphocyte ratio Systemic immune-inflammation index Carcinoembryonic antigen Intra-abdominal infection Colorectal cancer Predictive model Nomogram

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

大国科幻:《三体》故事世界的跨媒介叙事

中国文艺评论 2024年第5期 86-96,127,128页

作者：施畅暨南大学新闻与传播学院

刘慈欣小说《三体》作为大国科幻的创作标杆,通过世界构筑、时空扩展、叙事增殖等跨媒介叙事路径,构筑了一个多元开放、持续生长的故事世界。讲好大国科幻故事,可以从《三体》跨媒介叙事实践中获得经验与启示:一是构想别样的世界秩序,... 详细信息

刘慈欣小说《三体》作为大国科幻的创作标杆,通过世界构筑、时空扩展、叙事增殖等跨媒介叙事路径,构筑了一个多元开放、持续生长的故事世界。讲好大国科幻故事,可以从《三体》跨媒介叙事实践中获得经验与启示:一是构想别样的世界秩序,精心构筑并持续扩展故事世界;二是探寻叩访中国历史,以“秘史”“别史”等书写打开多重时空褶皱;三是鼓励粉丝汇聚集体智慧,直面时代之问与世界之问,为解决人类问题贡献更多中国智慧与中国方案。

关键词：故事世界跨媒介叙事中国科幻《三体》刘慈欣

Improvement of glucose metabolism in middle-aged mice on a high-fat diet by whole-grain highland barley is related to low methionine levels

在线全文

学校读者我要写书评

暂无评论

Food Science and Human Wellness 2024年第5期13卷 2906-2916页

作者： chuanxing Feng Yueting Ge Bowen Li Xiangrong cheng Xue Tang jianjin Zhu Yuge jiang Yonghui shi Guowei Le Center for Food Nutrition and Functional Food Engineering School of Food Science and TechnologyJiangnan UniversityWuxi 214122China State Key Laboratory of Food Science and Technology Jiangnan UniversityWuxi 214122China College of Life Science xinyang Normal Universityxinyang 464000China Key Laboratory of xin'an Medicine Ministry of EducationAnhui Province Key Laboratory of R&D of Chinese MedicineAnhui University of Chinese MedicineHefei 230038China

Methionine restriction(MR)is an effective dietary strategy to regulate energy metabolism and alleviate oxidative stress and inflammation in the body,especially in the middle-aged and elderly ***,the high methionine content of meat products makes this dietary strategy impossible to combine with protein supplementation and *** barley(HB),a low-methionine cereal,not only provides the body with protein but also has improved glucose metabolism and antioxidant and anti-inflammatory ***,this study evaluated the feasibility of HB as a source of methionine-restricted dietary protein and the potential ***-aged C57BL/6j mice were fed a control diet(CON),a high-fat diet(HFD),a whole-grain HB high-fat diet(HBHF),or a HBHF+methionine diet(HBHFmet)for 25 *** results showed that the HBHF could keep the body weight,fasting glucose,insulin,homeostasis model assessment of insulin resistance(HOMA-IR),blood lipids,inflammation,and oxidative stress of HFD mice at normal *** with the HFD groups,HBHF inhibited pancreatic cell apoptosis and improved insulin secretion while improving hepatic and skeletal muscle glucose ***,these efficacies were attenuated in HBHFmet group *** findings suggest that HBHF has an MR strategy.

关键词： Methionine restriction strategy Highland barley Insulin secretion Glucose metabolism

同方期刊数据库

Wettability,reactivity,and interface structure in Mg/Ni system

在线全文

学校读者我要写书评

暂无评论

journal of Magnesium and Alloys 2024年第2期12卷 659-672页

作者： S.Terlicka N.Sobczak Ł.Maj P.Darłak j.j.Sobczak Institute of Metallurgy and Materials Science Polish Academy of Sciences25 Reymonta Str.KrakowPoland Faculty of Foundry Engineering AGH University23 Reymonta Str.KrakowPoland

The sessile drop method was applied to the experimental investigation of the wetting and spreading behaviors of liquid Mg drops on pure Ni *** comparison,the experiments were performed in two variants:(1)using the Capillary Purification(CP)procedure,which allows the non-contact heating and squeezing of a pure oxide-free Mg drop;(2)by classical Contact Heating(ch)*** high-temperature tests were performed under isothermal conditions(CP:760℃for 30 s;ch:715℃for 300 s)using Ar+5 wt%H_(2) *** the sessile drop tests,images of the Mg/Ni couples were recorded by CCD cameras(57 fps),which were then applied to calculate the contact angles of metal/substrate *** and transmission electron microscopy analyses,both coupled with energy-dispersive X-ray spectroscopy,were used for detailed structural characterization of the solidified *** was found that an oxide-free Mg drop obtained by the CP procedure showed a wetting phenomenon on the Ni substrate(an average contact angleθch procedure,where the unavoidable primary oxide film on the Mg surface blocked the spreading of liquid Mg showing apparently non-wetting behavior after 300 s contact at the test ***,in both cases,the deep craters formed in the Ni substrates under the Mg drops and significant change in the structure of initially pure Mg drops to Mg-Ni alloys suggest a strong dissolution of Ni in liquid Mg and apparent values of the final contact angles measured for the Mg/Ni system.

关键词： Magnesium-based alloys Sessile drop tests Capillary purification procedure Wettability Reactivity Contact angle