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Microwave diagnostics of magnetic field strengths in solar flaring loops

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Science China(Technological Sciences) 2021年第1期64卷 169-178页

作者： zhu Rui TAN BaoLin SU YingNa tian hui XU Yu CHEN XingYao SONG YongLiang TAN GuangYu School of Earth and Space Sciences Peking UniversityBeijing 100871China Key Laboratory of Solar Activity National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100012China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210008China School of Astronomy and Space Science University of Science and Technology of ChinaHefei 230026China School of Astronomy and Space Science Nanjing UniversityNanjing 210023China

We have performed microwave diagnostics of the magnetic field strengths in solar flaring loops based on the theory of gyrosynchrotron *** Nobeyama Radioheliograph observations of three flare events at 17 and 34 GHz,we obtained the degree of circular polarization and the spectral index of microwave flux density,which were then used to map the magnetic field strengths in post-flare *** results show that the magnetic field strength typically decreases from ~800 G near the loop footpoints to~100 G at a height of 10-25 *** of our results with magnetic field modeling using a flux rope insertion method is also *** study demonstrates the potential of microwave imaging observations,even at only two frequencies,in diagnosing the coronal magnetic field of flaring regions.

关键词： solar magnetic field solar flare microwave observation gyrosynchrotron emission

L^(p) Solutions for Multidimensional BDSDEs with Locally Weak Monotonicity Coefficients

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Chinese Annals of Mathematics,Series B 2021年第3期42卷 409-426页

作者： Dejian tian Runyu zhu School of Mathematics China University of Mining and TechnologyXuzhou 221116JiangsuChina Department of Mathematics Hohai UniversityNanjing 210098China

In this paper,the authors establish the existence and uniqueness theorem of L^(p)(1 详细信息

In this paper,the authors establish the existence and uniqueness theorem of L^(p)(1

关键词： Backward doubly stochastic differential equation Locally monotonicity condition L^(p)solution

The mechanism and risk factors for immune checkpoint inhibitor pneumonitis in non-small cell lung cancer patients

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Cancer Biology & Medicine 2020年第3期17卷 599-611页

作者： Xiaoyang Zhai Jian Zhang Yaru tian Ji Li Wang Jing Hongbo Guo hui zhu Department of Radiation Oncology Shandong Cancer Hospital and InstituteShandong First Medical University and Shandong Academy of Medical SciencesJinan 250117China Department of Thoracic Surgery Shandong Cancer Hospital and InstituteShandong First Medical University and Shandong Academy of Medical SciencesJinan 250117China Department of Radiation Oncology Shandong Cancer Hospital and Institute affiliated with Shandong UniversityJinan 250012China

Immune checkpoint inhibitors(ICIs)are new and promising therapeutic agents for non-small cell lung cancer(NSCLC).However,along with demonstrating remarkable efficacy,ICIs can also trigger immune-related adverse *** inhibitor pneumonitis(CIP)has been reported to have a morbidity rate of 3%to 5%and a mortality rate of 10%to 17%.Moreover,the incidence of CIP in NSCLC is higher than that in other tumor types,reaching 7%to 13%.With the increased use of ICIs in NSCLC,CIP has drawn extensive attention from oncologists and cancer *** high risk factors for CIP and the potential mechanism of CIP are key points in preventing and monitoring serious adverse *** this review,the results of our analysis and summary of previous studies suggested that the risk factors for CIP may include previous lung disease,prior thoracic irradiation,and combinations with other *** review also explored potential mechanisms closely related toCIP,including increasedT cell activity against associated antigens in tumor and normal tissues,preexisting autoantibodies,and inflammatory cytokines.

关键词： Immune checkpoint inhibitor non-small-cell lung cancer pneumonitis risk factors

A New Generalized Linear Exponential Distribution and Its Applications

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Acta Mathematicae Applicatae Sinica 2014年第4期30卷 1049-1062页

作者： Yu-zhu tian Mao-zai tian Qian-qian zhu School of Mathematics and Information Science Henan Polytechnic University Center for Applied Statistics School of StatisticsRenmin University of China School of Statistics Lanzhou University of Finance and Economics

A new generalized linear exponential distribution （NCLED） is considered in this paper which can be deemed as a new and more flexible extension of linear exponential distribution. Some statistical properties for the NGLED such as the hazard rate function, moments, quantiles are given. The maximum likelihood estimations （MLE） of unknown parameters are also discussed. A simulation study and two real data analyzes are carried out to illustrate that the new distribution is more flexible and effective than other popular distributions in modeling lifetime data.

关键词： generalized linear exponential distribution (GLED) linear exponential distribution Hazard ratefunction maximum likelihood estimation (MLE)

Willingness to Pay for Measures of Managing the Health Effects of Heat Wave in Beijing,China:a Cross-sectional Survey

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Biomedical and Environmental Sciences 2016年第9期29卷 628-638页

作者： ZHANG Yi CHEN Chen BAN Jie ZHAO Jin hui XU Dan Dan zhu Peng Fei LI tian tian Department of Environmental Health Risk Assessment Institute for Environmental Health and Related Product Safety Chinese Center for Disease Control and Prevention Institute of Environmental Health Beijing Center for Diseases Prevention and Control

Objective There are evidences that heat wave events cause deaths and emergency cases. This article used the contingent valuation method to find the willingness to pay for the protective measures and investigated the factors that influence the willingness to pay. Methods A cross-sectional face-to-face household survey was completed by 637 urban long-term residents and 591 rural long-term residents aged 15-79 in Beijing, China. Binary logistic regression was used to identify factors that influenced the payment rate or payment amount for the protective measures, including independent variables for district, gender, age, education, income, air conditioner ownership, heat wave experience, and chronic non-communicable disease. Results The payment rate was 41.1% for protective measures provided by the government and 39.5% by measures provided by the market. Most of the respondents were willing to pay 40 CNY per capita annually for measures provided by the government or the market. The factors influencing willingness to pay were district, gender, income, air conditioner ownership, heat wave experience, and chronic non-communicable disease. Conclusion Protective measures for heat waves need to be provided immediately. More attention should be paid to the situation of vulnerable groups, such as people who live in urban areas, those without air conditioning, and those who have experienced a heat wave in the past.

关键词： Heat wave Protective measure Willingness to pay Influencing factor

Forward-facing steps induced transition in a subsonic boundary layer

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Science China(Physics,Mechanics & Astronomy) 2017年第10期60卷 34-44页

作者： hui zhu Song Fu School of Aerospace Engineering Tsinghua University Beijing 100084 China

A forward-facing step (FFS) immersed in a subsonic boundary layer is studied through a high-order flux reconstruction (FR) method to highlight the flow transition induced by the step. The step height is a third of the local boundary-layer thickness. The Reynolds number based on the step height is 720. Inlet disturbances are introduced giving rise to streamwise vortices upstream of the step. It is observed that these small-scale streamwise structures interact with the step and hairpin vortices are quickly developed after the step leading to flow transition in the boundary layer.

关键词： forward-facing steps boundary layer transitional flow

NK cells in liver homeostasis and viral hepatitis

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Science China(Life Sciences) 2018年第12期61卷 1477-1485页

作者： hui Peng Zhigang tian Division of Molecular Medicine Hefei National Laboratory for Physical Sciences at Microscale the CAS Key Laboratory of Innate Immunity and Chronic Disease School of Life Sciences University of Science and Technology of China Institute of Immunology University of Science and Technology of China

As an important member of the innate immune system, natural killer(NK) cells are well known for their rapid and efficient immune responses against infectious agents and tumors. NK cells are widely distributed throughout the body and are particularly enriched within the liver, where they display unique phenotypic and functional properties, playing important roles in various liver diseases. Herein, we present an overview of liver NK cell properties with regard to phenotype, function, and subset composition at steady state, and we also summarize the complex reciprocal interactions between liver NK cells and other cell types within the local environment of the liver. We also provide an overview of recent advances demonstrating the roles of NK cells in viral hepatitis, including a discussion of NK cell altered states and their beneficial versus harmful effects during hepatitis B virus and hepatitis C virus infection.

关键词： NK cells liver HBV HCV

Resource allocation based on sealed-bid auction algorithm in pervasive computing

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The Journal of China Universities of Posts and Telecommunications 2010年第1期17卷 85-92页

作者： ZHANG Lei tian hui Beijing University of Civil Engineering and Architecture~ Beijing 100044 China Key Laboratory of Universal Wireless Commtmications Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China

Pervasive computing, which requires applications composed of independent and distributed components, is an important domain for dynamic ubiquitous heterogeneous environment. However, one of the critical challenges it faces is resource allocation. To overcome the difficulty, enhanced universal service terminal （UST＋） is designed as a reflective middleware combined distributed components with particular features to achieve user goals. Moreover, a novel algorithm based on microeconomics is presented to resolve conflicting resource allocation and is implemented on top of the UST＋. Besides, an example outlines how this algorithm is used in pervasive computing, and the simulation results illustrate that the proposed mechanism can achieve high performance at low cost.

关键词： resource allocation conflict resolution UST+ sealed-bid auction

Tissue-resident natural killer cells in the livers

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Science China(Life Sciences) 2016年第12期59卷 1218-1223页

作者： hui Peng Zhigang tian Institute of Immunology and The CAS Key Laboratory of Innate Immunity and Chronic Disease School of Life Sciences and Medical CenterUniversity of Science and Technology of China Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases State Key Laboratory for Diagnosis and Treatment of Infectious DiseasesFirst Affiliated HospitalCollege of MedicineZhejiang University

Nature killer （NK） cells are important lymphocytes of the innate immune system, well known for their pivotal roles in immune surveillance and defense against tumor and virus-infected cells. Current studies have revealed that NK cells are not a homogeneous population, but instead consist of distinct subsets with diverse characteristics. As an organ with predominant innate immunity, the liver is enriched with NK cells, among which two distinct NK cell subsets have recently been identified： conventional NK （cNK） ceils and tissue-resident NK （trNK） ceils. Liver trNK cells are markedly different from cNK cells in many aspects, representing a new lineage of innate lymphoid cell （ILC） family. Here, we summarize the phenotypic and functional features of liver trNK cells, and review current knowledge regarding developmental pathway of liver trNK cells. We also overview recent advances in human liver trNK cells and discuss the striking shared hallmarks of trNK cells in different tissues.

关键词： liver conventional NK cell tissue-resident NK cell development function