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Hybrid perovskite shows temperature-dependent photoluminescence and dielectric response triggered by halogen substitution

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Chinese Journal of Structural Chemistry 2024年第6期43卷 28-33页

作者： Xiao-Tong Sun Hao-Fei Ni yi zhang Da-Wei Fu Ordered Matter Science Research Center Jiangsu Key Laboratory for Science and Applications of Molecular FerroelectricsSoutheast UniversityNanjing211189People's Republic of China Institute for Science and Applications of Molecular Ferroelectrics Key Laboratory of the Ministry of Education for Advanced Catalysis MaterialsZhejiang Normal UniversityJinhua321004People's Republic of China

Materials exhibiting dielectric switching response and photoluminescence(PL)are promising for sensors and information *** previous research,we synthesized a series of materials with red or green PL and dielectric switching capabilities by incorporating luminescent metal halides into organic ammonium ***,effective modification to synthesize organic-inorganic hybrid materials with dielectric switching response and orange PL continues to be a challenge in the respective *** PL materials are valuable for switching and sensors,and most orange light sources are derived from rare earth elements,making them harder to *** have successfully synthesized two organic-inorganic hybrid materials([CMPD]PbBr_(3)(1)and[BMPD]PbBr_(3)(2),CMPD=N-ClCH_(2)-N-methylpiperidine,BMPD=N-BrCH_(2)-N-methylpiperidine)that exhibit both orange PL and dielectric switching *** Cl in compound 1 is substituted by Br in compound 2,the phase transition temperature of the compound is elevated by 45 *** compounds exhibit captivating orange light emission when exposed to ultraviolet *** research provides insights into exploring multifunctional materials with orange PL and dielectric switching response and provides proof for halogen substitution strategies to design materials with higher phase transition temperatures.

关键词： Dielectric switching Photoluminescence Orange

邛海国家湿地公园社会生态系统服务价值变化数据集(2009、2019)研发

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全球变化数据学报（中英文） 2024年第1期8卷 98-103,V0098-V0103页

作者：李勇冯晓张予倩赵振斌新疆师范大学地理科学与旅游学院乌鲁木齐830054 陕西师范大学地理科学与旅游学院西安710119

邛海国家湿地公园规划建设引起了征地搬迁和土地利用变化,关注社区居民感知的社会生态系统服务价值变化,对于湿地生态系统的可持续管理和增进居民福祉具有重要意义。作者采用访谈、参与式制图、理论探讨等方法进行数据采集,并进行数据... 详细信息

邛海国家湿地公园规划建设引起了征地搬迁和土地利用变化,关注社区居民感知的社会生态系统服务价值变化,对于湿地生态系统的可持续管理和增进居民福祉具有重要意义。作者采用访谈、参与式制图、理论探讨等方法进行数据采集,并进行数据空间化,得到邛海国家湿地公园社会生态系统服务价值变化数据集(2009、2019)。数据集由29个数据文件组成,内容包括:(1)访谈调查表;(2)调研对象社会经济特征;(3)2009年公园建设前社会生态系统服务价值类型表;(4)2019年公园建设后社会生态系统服务价值类型表;(5)2009年公园建设前社会生态系统服务价值类型点数据;(6)2019年公园建设后社会生态系统服务价值类型点数据;(7)公园土地利用与注记点数据。数据存储为.xlsx和.shp格式,数据量为991 KB。

关键词：社会生态系统服务价值参与式制图湿地公园邛海

Advances in immunotherapy for hepatitis B virus associated hepatocellular carcinoma patients

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World Journal of Hepatology 2024年第10期16卷 1158-1168页

作者： Wei-Hua Cao ya-Qin zhang Xin-Xin Li Zi-yu zhang Ming-Hui Li Department of Hepatology Division 2 Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China Department of Hepatology Division 2 Beijing Ditan HospitalCapital Medical UniversityPeking University Ditan Teaching HospitalBeijing 100015China

Hepatitis B virus(HBV)infection plays an important role in the occurrence and development of hepatocellular carcinoma(HCC),and the rate of HBV infection in liver cancer patients in China is as high as 92.05%.Due to long-term exposure to chronic antigens from the gut,the liver needs to maintain a certain level of immune tolerance,both to avoid severe inflammation caused by non-pathogenic antigens and to maintain the possibility of rapid and violent responses to infection and ***,HBV infection interacts with the tumor microenvironment(TME)through a highly complex and intertwined signaling pathway,which results in a special TME in *** to changes in the TME,tumor cells can evade immune surveillance by inhibiting tumor-specific T cell function through cytotoxic T-lymphocy-associated protein-4(CTLA-4)and programmed cell death 1(PD-1)/programmed cell death ligand 1(PD-L1).Interferons,as a class of immune factors with strong biological activity,can improve the TME of HBV-HCC through various *** recent years,the systematic treatment of HCC has gradually come out of the *** addition to the continuous emergence of new multi-target anti-vascular tyrosine kinase inhibitor drugs,immune checkpoint inhibitors have opened up a new avenue for the systematic treatment of *** present,immunotherapy based on PD-1/L1 inhibitors has gradually become a new direction of systematic treatment for HCC,and the disease charac-teristics of patients included in global clinical studies are different from those of Chinese ***,whether a group of HCC patients with HBV background and poor prognosis in China can also benefit from immunotherapy is an issue of wide *** review aims to elucidate the advances of immuno-therapy for HBV related HCC patients with regard to:(1)Immunotherapy based on interferons;(2)Immunotherapy based on PD-1/L1 inhibitors;(3)Immunotherapy based on CTLA4 inhibitors;(4)Adoptive cell transfer;(5)Combination immunotherapy str

关键词： Hepatitis B virus Hepatocellular carcinoma Immune checkpoint inhibitors Peginterferon alpha Systematic treatment

Thienothiophene-centered ladder-type π-systems that feature distinct quinoidal π-extension

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Chinese Chemical Letters 2024年第5期35卷 249-253页

作者： Jiaxiang Guo Zeyi Li Tianyu zhang Xinyu Tian yue Wang Chuandong Dou State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials Soochow UniversitySuzhou 215123China

Quinoidalπ-conjugated structures,a kind of fundamental subunits for organicπ-systems,may produce some intriguing optical,electronic and magnetic properties of polycyclic hydrocarbons(PHs).Herein,we report two thienothiophene-centered ladder-type polycyclic molecules(1 and 2),which possess one quinoidal thienothiophene moiety and two para-quinodimethane(p-QDM)subunits,*** theoretically and experimentally studied,while 1 is a fully closed-shell molecule,2 owns an open-shell structure along with partial contribution of tetraradical state that is induced by the resonance of ***,although 2 has a largerπ-conjugated skeleton and open-shell electronic state,it exhibits larger bandgap and blue-shifted *** the other hand,the reversible oxidation activity of 1 enables the preparation of its dication 1^(2+),and the studies on its single-crystal and aromatic structures demonstrate that its two positive charges are delocalized onto the oxygen atoms,thus achieving fullyπ-extended structure and near-infrared *** study not only gains insight into quinoidalπ-subunits,but also provides an important basis for the development of antiaromatic and open-shellπ-electron materials.

关键词： Thienothiophene Quinoidal conjugation Open-shell structure Aromaticity Photophysical properties

Assessing the efficacy and safety of gemcitabine-induced thrombocytopenia/neutropenia and thrombocytopenia interventions in zebrafish

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Journal of Genetics and Genomics 2024年第9期51卷 970-973页

作者： Jialong Deng Ziyuan Zhou Wangjun Liao Qing Lin yiyue zhang Innovation Centre of Ministry of Education for Development and Diseases School of MedicineSouth China University of TechnologyGuangzhouGuangdong 510006China Department of Hematology The Sixth Affiliated HospitalSchool of MedicineSouth China University of TechnologyFoshanGuangdong 528200China Department of Oncology Nanfang HospitalSouthern Medical UniversityGuangzhouGuangdong 510515China

Cancer is a major global health issue;in 2020,there were 19.29 million new cancer cases and 9.96 million cancer deaths worldwide(Siegel et al.,2023).Despite ongoing research,chemotherapy remains the primary treatment due to its broad anti-cancer effects(Marra and Curigliano,2021).However,intravenous chemotherapeutic drugs commonly induce hematotoxicity,necessitating dose adjustments or treatment ***-induced thrombocytopenia(CIT)and neutropenia(CIN)are the primary manifestations of chemotherapy-induced hematotoxicity,which requires intervention due to the heightened risk of bleeding and infection(Blayney and Schwartzberg,2022).Currently,there are no FDA-approved treatments for CIT(Song and Al-Samkari,2023).While a CIT mouse model using 5-FU has been developed for drug evaluation(Shin et al.,2023),it lacks a comprehensive hematotoxicity assessment and the benefits of high throughput,cost-effectiveness,and ***,it is urgent to develop a high-throughput CIT model for risk assessment and safer chemotherapy strategies with clinical potential.

关键词： chemotherapy treatment visibility

Single droplet formation by controlling the viscoelasticity of polymer solutions during inkjet printing

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Chinese Chemical Letters 2024年第6期35卷 244-248页

作者： Dong Lv Xuelei Liu Wei Li Qiang zhang Xinhong yu yanchun Han State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China

Inkjet printing has emerged as a potential solution processing method for large-area patterned *** inkjet printing,a single droplet without satellite droplet is required for high-quality ***,we propose a strategy for obtaining a single droplet by adjusting the reduced concentration(c/c^(*),where c^(*)is the critical overlap concentration)in the range of *** formation can be categorized into three distinct regimes:(1)c/c^(*)2.0,no ***,an inertial-capillary balance led to the 2/3-power scaling of the minimum radius with time for the solutions of c/c^(*)y with ***,the Weissenberg number was higher than the critical value of 0.5,indicating that the polymer chains underwent coil-stretch *** viscoelastic-capillary balance dominated instead of the inertial-capillary *** resulting viscoelastic resistance reduced the length of the ligament and increased the velocity difference between the satellite and main ***,a single droplet was *** addition,the law can be successfully generalized to various molecular weights,molecular structures and solvents.

关键词： Inkjet printing Single droplet Satellite droplet Viscoelasticity Coil-stretch

Identification of Early Warning Signals of Infectious Diseases in Hospitals by Integrating Clinical Treatment and Disease Prevention

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Current Medical Science 2024年第2期44卷 273-280页

作者： Lei zhang Min-ye LI Chen ZHI Min ZHU Hui MA Sixth Medical Center Chinese PLA General HospitalBeijing100048China The Nursing Department Chinese PLA General HospitalBeijing 100853China

The global incidence of infectious diseases has increased in recent years,posing a significant threat to human *** typically serve as frontline institutions for detecting infectious ***,accurately identifying warning signals of infectious diseases in a timely manner,especially emerging infectious diseases,can be ***,there is a pressing need to integrate treatment and disease prevention data to conduct comprehensive analyses aimed at preventing and controlling infectious diseases within *** paper examines the role of medical data in the early identification of infectious diseases,explores early warning technologies for infectious disease recognition,and assesses monitoring and early warning mechanisms for infectious *** propose that hospitals adopt novel multidimensional early warning technologies to mine and analyze medical data from various systems,in compliance with national strategies to integrate clinical treatment and disease ***,hospitals should establish institution-specific,clinical-based early warning models for infectious diseases to actively monitor early signals and enhance preparedness for infectious disease prevention and control.

关键词： infectious disease disease prevention and control medical data warning signals

A real-time calibration method based on time-to-digital converter for accelerator timing system

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Nuclear Science and Techniques 2024年第9期35卷 127-140页

作者： Qi-Hao Duan Liang Ge yan-Hao Jia Jie-yu Zhu Wei zhang Institute of modern physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China

The high-intensity heavy-ion accelerator facility(HIAF)is a scientific research facility complex composed of multiple cas-cade accelerators of different types,which pose a scheduling problem for devices distributed over a certain range of 2 km,involving over a hundred *** white rabbit,a technology-enhancing Gigabit Ethernet,has shown the capability of scheduling distributed timing devices but still faces the challenge of obtaining real-time synchronization calibration param-eters with high *** study presents a calibration system based on a time-to-digital converter implemented on an ARM-based System-on-Chip(SoC).The system consists of four multi-sample delay lines,a bubble-proof encoder,an edge controller for managing data from different channels,and a highly effective calibration module that benefits from the SoC *** performance was evaluated with an average RMS precision of 5.51 ps by measuring the time intervals from 0 to 24,000 ps with 120,000 data for every *** design presented in this study refines the calibration precision of the HIAF timing *** eliminates the errors caused by manual calibration without efficiency loss and provides data support for fault *** can also be easily tailored or ported to other devices for specific applications and provides more space for developing timing systems for particle accelerators,such as white rabbits on HIAF.

关键词： HIAF White rabbit Calibration system Time-to-digital converter(TDC)

Giant Magneto-Optical Effect in van der Waals Room-Temperature Ferromagnet Fe_(3)GaTe_(2)

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Chinese Physics Letters 2024年第6期41卷 148-155页

作者：张晓敏王健朱文凯张佳茜李伟浩张菁王开友 State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China School of Materials Shenzhen Campus of Sun Yat-sen UniversityShenzhen 518107China

The discovery of ferromagnetic two-dimensional(2D)van der Waals(vdWs)materials provides an opportunity to explore intriguing physics and to develop innovative spin electronic ***,the main challenge for practical applications of vd Ws ferromagnetic crystals lies in the weak intrinsic ferromagnetism and small perpendicular magnetic anisotropy(PMA)above room ***,we report the intrinsic vd Ws ferromagnetic crystal Fe_(3)GaTe_(2),synthesized by the self-flux method,exhibiting a Curie temperature(TC)of 370 K,a high saturation magnetization of 33.47 emu/g,and a large PMA energy density of approximately 4.17×10^(5)J/m^(3).Furthermore,the magneto-optical effect is systematically investigated in Fe_(3)GaTe_(2).The doubly degenerate E_(2g)(Γ)mode reverses the helicity of incident photons,indicating the existence of pseudoangular-momentum(PAM)and ***,the non-degenerate non-chiral A_(1g)(Γ)phonon exhibits a significant magneto-Raman effect under an external out-of-plane magnetic *** results lay the groundwork for studying phonon chirality and magneto-optical phenomena in 2D magnetic materials,providing the feasibility for further fundamental research and applications in spintronic devices.

关键词： field ferromagnetic degenerate