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Chinese Chemical Letters 2024年第4期35卷 502-505页

作者： Yan Cheng Hua-Peng Ruan Yan Peng Longhe Li Zhenqiang Xie Lang Liu Shiyong Zhang Hengyun Ye zhao-bo Hu Chaotic Matter Science Research Center Faculty of Materials Metallurgy and ChemistryJiangxi University of Science and TechnologyGanzhou 341000China College of Materials and Chemical Engineering Pingxiang UniversityPingxiang 337055China Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry Jiangxi University of Science and TechnologyGanzhou 341000China Key Laboratory of Jiangxi University for Functional Materials Chemistry School of Chemistry and Chemical EngineeringGannan Normal UniversityGanzhou 341000China

The application of multifunctional materials in various fields such as electronics and signal processors has attracted massive attention. Herein, a new organic-inorganic hybrid material [Et_(3)NCH_(2)Cl]_(2)[MnBr_(4)](1) is reported, which contains two organic amines cations and one [MnBr_(4)] tetrahedral ion. Compound 1 has a dielectric anomaly signal at 338 K, which proves its thermodynamic phase transition. The single crystal measurements at 200 K and 380 K show that the phase transition of compound 1 is caused by the thermal vibration of organic amine cations in the lattice. Moreover, compound 1 shows yellow-green luminescence under UV light irradiation. The magnetism measurements indicate that compound 1 shows switchable magnetic properties. This organic–inorganic material is a multifunctional material with dielectric, optical, and magnetic synergetic switchable effects, which expands a new direction for designing multifunctional materials.

关键词： Synergetic switchable effects Molecular materials Magnetism Dielectric Luminescence

Heavy ion energy influence on multiple-cell upsets in small sensitive volumes:from standard to high energies

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Nuclear Science and Techniques 2024年第5期35卷 109-121页

作者： Yang Jiao Li-Hua Mo Jin-Hu Yang Yu-Zhu Liu Ya-Nan Yin Liang Wang Qi-Yu Chen Xiao-Yu Yan Shi-Wei zhao bo Li You-Mei Sun Pei-Xiong zhao Jie Liu Institute of Modern Physics Chinese Academy of ScienceLanzhou 730000China University of Chinese Academy of Science Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China China Electronics Technology Group Corporation No.58 Research Institute Wuxi 214000China Beijing Microelectronics Technology Institute Beijing 100084China Institute of Microelectronics Chinese Academy of SciencesBeijing 100029China Key Laboratory of Science and Technology on Silicon Devices Chinese Academy of SciencesBeijing 100029China

The 28 nm process has a high cost-performance ratio and has gradually become the standard for the field of radiation-hardened devices.However,owing to the minimum physical gate length of only 35 nm,the physical area of a standard 6T SRAM unit is approximately 0.16μm^(2),resulting in a significant enhancement of multi-cell charge-sharing effects.Multiple-cell upsets(MCUs)have become the primary physical mechanism behind single-event upsets(SEUs)in advanced nanometer node devices.The range of ionization track effects increases with higher ion energies,and spacecraft in orbit primarily experience SEUs caused by high-energy ions.However,ground accelerator experiments have mainly obtained low-energy ion irradiation data.Therefore,the impact of ion energy on the SEU cross section,charge collection mechanisms,and MCU patterns and quantities in advanced nanometer devices remains unclear.In this study,based on the experimental platform of the Heavy Ion Research Facility in Lanzhou,low-and high-energy heavy-ion beams were used to study the SEUs of 28 nm SRAM devices.The influence of ion energy on the charge collection processes of small-sensitive-volume devices,MCU patterns,and upset cross sections was obtained,and the applicable range of the inverse cosine law was clarified.The findings of this study are an important guide for the accurate evaluation of SEUs in advanced nanometer devices and for the development of radiation-hardening techniques.

关键词： 28 nm static random access memory(SRAM) Energy effects Heavy ion Multiple-cell upset(MCU) Charge collection Inverse cosine law

Multilocular thymic cysts can be easily misdiagnosed as malignant tumor on computer tomography:A case report

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World Journal of Clinical Cases 2024年第8期12卷 1474-1480页

作者： Jun Sun Qing-Ning Yang Yi Guo Ping Zeng Long-Yan Ma Ling-Wen Kong bo-Ying zhao Chuan-Ming Li Department of Radiology Chongqing University Central HospitalChongqing Emergency Medical CenterChongqing 400014China Department of Pathology Chongqing University Central HospitalChongqing Emergency Medical CenterChongqing 400014China Department of Cardiothoracic Surgery Chongqing University Central HospitalChongqing Emergency Medical CenterChongqing 400014China

BACKGROUND Multilocular thymic cyst(MTC)is a rare mediastinal lesion which is considered to occur in the process of acquired inflammation.It is usually characterized by well-defined cystic density and is filled with transparent liquid.CASE SUMMARY We report on a 39-year-old male with a cystic-solid mass in the anterior mediastinum.Computer tomography(CT)imaging showed that the mass was irregular with unclear boundaries.After injection of contrast agent,there was a slight enhancement of stripes and nodules.According to CT findings,it was diagnosed as thymic cancer.CONCLUSION After surgery,MTC accompanied by bleeding and infection was confirmed by pathological examination.The main lesson of this case was that malignant thymic tumor and MTC of the anterior mediastinum sometimes exhibit similar CT findings.Caution is necessary in clinical work to avoid misdiagnosis.

关键词： Multilocular thymic cyst Computer tomography Misdiagnosis Hemorrhage Infection Case report

The benefits of PCSK9 inhibitors in patients with acute coronary syndrome:a systematic review and meta-analysis

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Emergency and Critical Care Medicine 2024年第1期4卷 28-34页

作者： Guanzhao Zhang Shuting Chang Faming zhao Xiangfeng Guan Zifan Nie Wenhao Liu bo Li Department of Cardiology Binzhou Medical UniversityZibo Central HospitalZiboShandongChina Weifang Medical University WeifangShandongChina Department of Infectious Disease Zibo Infectious Disease HospitalZiboShandongChina.

Background:Proprotein convertase subtilisin/kexin 9(PSCK9)inhibitors have been beneficial for many patients with hyperlipidemia.The objective of this study was to investigate the benefit of PSCK9 inhibitors in patients with acute coronary syndrome(ACS).Methods:We systematically searched PubMed,EMBASE,and Cochrane Clinical Trials(published before January 2023;no language restriction)to compare the treatment of patients with ACS using PCSK9 inhibitors and placebo.The primary end points were major adverse cardiovascular events,nonfatal myocardial infarction,cardiogenic death,stroke,hospitalization for recurrent ACS,and coronary revascularization.Fixed-or random-effects models were used to assess the aggregated data.Results:Of the 1686 identified studies,5 were eligible and included in our analysis(of a total of 38,005 participants,18,609 cases were placed in the PCSK9 inhibitor treatment group and 19,396 cases in the placebo group).Compared with the placebo group,PCSK9 inhibitors significantly reduced the major adverse cardiovascular events(odds ratio[OR]:0.83;95%confidence interval[CI]:0.77–0.88;P<0.00001)for patients following ACS.The incidence of nonfatal myocardial infarction(relative risk:0.80;95%CI:0.74–0.87;P<0.00001),cardiovascular death(OR:0.96;95%CI:0.83–1.10;P=0.56),stroke(OR:0.74;95%CI:0.63–0.88;P=0.0007),hospitalization for recurrent ACS(OR:0.57;95%CI:0.40–0.83;P=0.003),or coronary revascularization(OR:0.82;95%CI:0.76–0.88;P<0.00001)all demonstrated a significant decrease in the comparison between the 2 groups.Conclusion:This meta-analysis demonstrated that treatment with PCSK9 inhibitors in patients with ACS reduced the probability of multiple cardiovascular events and improved patient prognosis.

关键词： Acute coronary syndrome Cardiovascular disease PCSK9 inhibitors

Dynamical Dark Energy in Light of Cosmic Distance Measurements. Ⅰ.A Demonstration Using Simulated Datasets

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Research in Astronomy and Astrophysics 2024年第6期 9-16页

作者： Gan Gu Xiaoma Wang Xiaoyong Mu Shuo Yuan Gong-bo zhao National Astronomical Observatories Chinese Academy of Sciences University of Chinese Academy of Sciences Institute for Frontiers in Astronomy and Astrophysics Beijing Normal University

We develop methods to extract key dark energy information from cosmic distance measurements including the BAO scales and supernova(SN) luminosity distances. Demonstrated using simulated data sets of the complete DESI, LSST and Roman surveys designed for BAO and SN distance measurements, we show that using our method, the dynamical behavior of the energy, pressure, equation of state(with its time derivative) of dark energy and the cosmic deceleration function can all be accurately recovered from high-quality data, which allows for robust diagnostic tests for dark energy models.

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Perioperative remedial antiviral therapy in hepatitis B virus-related hepatocellular carcinoma resection:How to achieve a better outcome

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World Journal of Gastrointestinal Oncology 2024年第5期16卷 1833-1848页

作者： Fan Mu Liang-Shuo Hu Kun Xu Zhen zhao Bai-Cai Yang Yi-Meng Wang Kun Guo Jian-Hua Shi Yi Lv bo Wang Department of Hepatobiliary Surgery First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina Department of Anaesthesiology First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina Department of Gynaecology Wenzhou Medical University Affiliated Jiaxing Women and Children HospitalJiaxing 314000Zhejiang ProvinceChina

BACKGROUND Although the benefits of antiviral therapy for hepatitis B virus(HBV)-related hepatocellular carcinoma(HCC)have been proven,researchers have not con-firmed the differences in patient outcomes between patients who received preoperative antiviral therapy for a period of time(at least 24 wk)and patients who received remedial antiviral therapy just before radical resection for HBV-related HCC.AIM To investigate the efficacy of perioperative remedial antiviral therapy in patients with HBV-related HCC.METHODS A retrospective study of patients who underwent radical resection for HBV-related HCC at the First Affiliated Hospital of Xi’an Jiaotong University from January 2016 to June 2019 was conducted.Considering the history of antiviral therapy,patients were assigned to remedial antiviral therapy and preoperative antiviral therapy groups.RESULTS Kaplan–Meier analysis revealed significant differences in overall survival(P<0.0001)and disease-free survival(P=0.035)between the two groups.Multivariate analysis demonstrated that a history of preoperative antiviral treatment was independently related to improved survival(hazard ratio=0.27;95%confidence interval:0.08-0.88;P=0.030).CONCLUSION In patients with HBV-related HCC,it is ideal to receive preoperative long-term antiviral therapy,which helps patients tolerate more extensive hepatectomy;however,remedial antiviral therapy,which reduces preoperative HBV-DNA levels to less than 4 Log10 copies DNA/mL,can also result in improved outcomes.

关键词： Hepatectomy Hepatitis B virus Antiviral therapy Hepatocellular carcinoma Hepatitis B virus-DNA

Short-term Association of Meteorological Elements on COVID-19 Pandemic in a Semi-arid City of Northwest China,2021-2022

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Biomedical and Environmental Sciences 2024年第5期37卷 537-542页

作者： FENG Feng Liu MA Yu Xia CHENG bo Wen LIU Zong Rui zhao Yu Han YANG Jie College of Atmospheric Sciences Key Laboratory of Semi-Arid Climate ChangeMinistry of EducationLanzhou UniversityLanzhou 730000GansuChina Minhe Meteorological Bureau Minhe 810800QinghaiChina

The coronavirus disease 2019(COVID-19)outbreak in late 2019 significantly impacted global health.The virus’s rapid spread,with its long incubation period and high infection level,caused substantial disruption to regular social frameworks,production,and lifestyles^([1]).COVID-19 is primarily transmitted through close contact,long-range contaminants,and airborne routes.

关键词： Northwest COV primarily

Dynamical Dark Energy in Light of Cosmic Distance Measurements. Ⅱ. A Study Using Current Observations

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Research in Astronomy and Astrophysics 2024年第6期 17-22页

作者： Xiaoma Wang Gan Gu Xiaoyong Mu Shuo Yuan Gong-bo zhao National Astronomical Observatories Chinese Academy of Sciences University of Chinese Academy of Sciences Institute for Frontiers in Astronomy and Astrophysics Beijing Normal University

We extract key information on dark energy from current observations of BAO, OHD and H0, and find hints of dynamical behavior of dark energy. In particular, a dynamical dark energy model whose equation of state crosses-1 is favored by observations. We also find that the Universe has started accelerating at a lower redshift than expected.

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A Review of Intelligent Configuration and Its Security for Complex Networks

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Chinese Journal of Electronics 2024年第4期33卷 920-947页

作者： Yue zhao Bin YANG Fei TENG Xianhua NIU Ning HU bo TIAN Science and Technology on Communication Security Laboratory School of Computer and Information Engineering Chuzhou University School of Computing and Artificial Intelligence Southwest Jiaotong University School of Computer and Software Engineering Xihua University Cyberspace Institute of Advanced Technology Guangzhou University

Complex networks are becoming more complex because of the use of many components with diverse technologies. In fact, manual configuration that makes each component interoperable has breed latent danger to system security. There is still no comprehensive review of these studies and prospects for further research. According to the complexity of component configuration and difficulty of security assurance in typical complex networks, this paper systematically reviews the abstract models and formal analysis methods required for intelligent configuration of complex networks, specifically analyzes, and compares the current key technologies such as configuration semantic awareness, automatic generation of security configuration, dynamic deployment, and verification evaluation. These technologies can effectively improve the security of complex networks intelligent configuration and reduce the complexity of operation and maintenance. This paper also summarizes the mainstream construction methods of complex networks configuration and its security test environment and detection index system, which lays a theoretical foundation for the formation of the comprehensive effectiveness verification capability of configuration security. The whole lifecycle management system of configuration security process proposed in this paper provides an important technical reference for reducing the complexity of network operation and maintenance and improving network security.

关键词：

fast neutron absorption spectroscopy;laser plasma accelerator;photo-nuclear neutrons;single neutron count

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High Power Laser Science and Engineering 2024年第1期12卷 108-115页

作者： Wen-zhao Wang Jie Feng Xiao-Peng Zhang Yao-Jun Li Wei-Jun Zhou Wen-Chao Yan Guo-Qiang Zhang Chang-bo Fu Li-Ming Chen Key Laboratory of Laser Plasma(MoE) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghaiChina IFSA Collaborative Innovation Center Shanghai Jiao Tong UniversityShanghaiChina Institute of High Energy Physics Chinese Academy of SciencesBeijingChina Shanghai Advanced Research Institute Chinese Academy of SciencesShanghaiChina Key Laboratory of Nuclear Physics and Ion-beam Application(MoE) Institute of Modern PhysicsFudan UniversityShanghaiChina

Fast neutron absorption spectroscopy is widely used in the study of nuclear structure and element analysis. However,due to the traditional neutron source pulse duration being of the order of nanoseconds, it is difficult to obtain a high-resolution absorption spectrum. Thus, we present a method of ultrahigh energy-resolution absorption spectroscopy via a high repetition rate, picosecond duration pulsed neutron source driven by a terawatt laser. The technology of single neutron count is used, which results in easily distinguishing the width of approximately 20 keV at 2 MeV and an asymmetric shape of the neutron absorption peak. The absorption spectroscopy based on a laser neutron source has one order of magnitude higher energy-resolution power than the state-of-the-art traditional neutron sources, which could be of benefit for precisely measuring nuclear structure data.

关键词： fast neutron absorption spectroscopy laser plasma accelerator photo-nuclear neutrons single neutron count