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云量变化对净辐射的影响

大气科学学报 1987年第3期30卷 348-354页

作者：张瑛李怀钢山东省气象局

本文对全球平均、各纬带平均和几种特殊下垫面条件下大气顶和地表面的净辐射随云量变化的情况进行定量分析,并讨论了净辐射对云量变化的敏感性随各参数改变的情况。另外还定性地讨论了云在全球气候中的反馈作用以及这种反馈作用随各参... 详细信息

本文对全球平均、各纬带平均和几种特殊下垫面条件下大气顶和地表面的净辐射随云量变化的情况进行定量分析,并讨论了净辐射对云量变化的敏感性随各参数改变的情况。另外还定性地讨论了云在全球气候中的反馈作用以及这种反馈作用随各参数变化的特点。指出:一般条件下,净辐射对于云量变化是敏感的,只有当气候参数变化到临界值附近时,对气候的模拟可以不考虑云量的变化。从云量对气候的反馈来看,在气候参数发生变化时,气候系统的稳定性会发生本质的改变。

关键词：云量净辐射

The role of innate immunity in diabetic nephropathy and their therapeutic consequences

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Journal of Pharmaceutical Analysis 2024年第1期14卷 39-51页

作者： Min Yang Chun zhang Department of Nephrology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430022China

Diabetic nephropathy (DN) is an enduring condition that leads to inflammation and affects a substantial number of individuals with diabetes worldwide. A gradual reduction in glomerular filtration and emergence of proteins in the urine are typical aspects of DN, ultimately resulting in renal failure. Mounting evidence suggests that immunological and inflammatory factors are crucial for the development of DN. Therefore, the activation of innate immunity by resident renal and immune cells is critical for initiating and perpetuating inflammation. Toll-like receptors (TLRs) are an important group of receptors that identify patterns and activate immune responses and inflammation. Meanwhile, inflammatory responses in the liver, pancreatic islets, and kidneys involve inflammasomes and chemokines that generate pro-inflammatory cytokines. Moreover, the activation of the complement cascade can be triggered by glycated proteins. This review highlights recent findings elucidating how the innate immune system contributes to tissue fibrosis and organ dysfunction, ultimately leading to renal failure. This review also discusses innovative approaches that can be utilized to modulate the innate immune responses in DN for therapeutic purposes.

关键词： Innate immunity Diabetic nephropathy Inflammation Toll-like receptor Inflammasomes

OsPPG encodes a pseudouridine-5'-phosphate glycosidase and regulates rice spikelet development

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The Crop Journal 2024年第3期12卷 698-708页

作者： Rui Chen Dagang Tian Yarong lin Jiaqing Huang Qinqin Yang Yupei li Huaqing liu Shaohua Yang Jingyang Chen Shufen Zhou Feng Wang Shubiao zhang Key Laboratory of Genetics Breeding and Multiple Utilization of CropsMinistry of Education/Key Laboratory of Biological Breeding for Fujian and Taiwan CropsMinistry of Agriculture and Rural AffairsFujian Agriculture and Forestry UniversityFuzhou 350002FujianChina Fujian Key Laboratory of Genetic Engineering for Agriculture Biotechnology Research InstituteFujian Academy of Agricultural SciencesFuzhou 350003FujianChina Institute of Resources Environment and Soil FertilizerFujian Academy of Agricultural SciencesFuzhou 350013FujianChina

Florets are the basic structural units of spikelets,and their morphogenesis determines the yield and quality of rice ***,whether and how pseudouridine-5’-phosphate glycosidase participates in rice spikelet development remains an open *** this study,we identified a novel gene,OsPPG,which encodes a peroxisome-localized pseudouridine-5’-phosphate glycosidase and regulates the development of rice *** mutants exhibited abnormal sterile lemma,lemma,palea,lodicule,stamens,and pistils;male sterility;shorter panicles;and reduced plant *** was found to regulate several OsMADS genes,thereby affecting the morphogenesis of rice ***,metabolomics revealed that the OsPPG gene was involved in the decomposition of pseudouridine via the pyrimidine metabolism pathway and may affect the jasmonic acid signaling *** results suggest that OsPPG is a key regulator of rice spikelet development.

关键词： OsPPG Reproductive regulation Spikelet development Rice

Circadian disturbance induces erectile dysfunction by impairing endothelial function

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Asian Journal of Andrology 2024年第2期26卷 205-211页

作者： Tao li Yi-Ting Jiang Xin-Zhu Qi Peng Chen Jun-Hao zhang Fu Luo Jun Qiao Jiang Gu Guang-Shi Du Qiang Wang Department of Urology Affiliated Hospital of Guizhou Medical UniversityGuiyang 550004China Department of Urology Guizhou Provincial People's HospitalGuiyang 550002China Department of Otorhinolaryngology Affiliated Hospital of Guizhou Medical UniversityGuiyang 550004China Guizhou Institute for Food and Drug Control Guiyang 550004China Department of Reproductive Center Guizhou Provincial People's HospitalGuiyang 550002China Translational Medicine Research Center of Guizhou Medical University Guiyang 550025China

In order to explore the impact of circadian disturbance on erectile function,we randomly divided 24 adult male rats into groups of control(light on at 8:00 *** off at 8:00 p.m.),dark/dark(DD;constant dark),light/light(LL;constant light),and shift dark/light(DL;light off at 8:00 *** on at 8:0o p.m.).Four weeks later,erectile function was measured and corpora cavernosa were harvested for *** maximum intracavernous pressure(mlcP)and mCP/mean arterial pressure(MAP)ratio in the DD,LL,and DL groups were significantly lower than that in the control *** LL and DL groups showed significantly attenuated endothelial nitric oxide synthase(eNOS),while DD,LL,and DL showed reduced neuronal nitric oxide synthase(nNOS)at both mRNA and protein *** production of nitric oxide(NO)and cyclic guanosinemonophosphate(cGMP)was inhibited by altered light/dark cycles to varying *** disturbance impaired endothelial function and contributed to erectile *** the core circadian elements,mRNA expression of circadian locomotor output cycles kaput(Clock)and brain/muscle aryl-hydrocarbon receptor nuclear translocator-like protein 1(Bmal1)was elevated in the DL group,but their protein expression was not significantly ***,LL,and DL increased period 1(Per1)and Per3 levels,while LL and DL increased PER1 *** significant difference was found for Per2levels,and PER2 and PER3 concentrations were not significantly ***,LL and DL significantly increased cryptochrome-1(CRY1)and CRY2 at both mRNA and protein *** altered light/dark rat model showed that circadian disturbance contributed to erectile dysfunction probably by impairing endothelial ***,the core circadian elements were detected in the corpora cavernosa,but these were ***,which circadian element regulates erectile function and how it works need further analysis.

关键词： circadian disturbance endothelial function erectile function light/dark cycle NO/cGMP

Stabilization and Blow-up in an Infinite Memory Wave Equation with Logarithmic Nonlinearity and Acoustic Boundary Conditions

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Journal of Systems Science & Complexity 2024年第4期37卷 1368-1391页

作者： PENG Qingqing zhang Zhifei School of Mathematics and Statistics Huazhong University of Science and TechnologyWuhan 430074China Hubei Key Laboratory of Engineering Modeling and Scientific Computing Huazhong University of Science and TechnologyWuhan 430074China

In this paper,the authors consider the stabilization and blow up of the wave equation with infinite memory,logarithmic nonlinearity and acoustic boundary *** authors discuss the existence of global solutions for the initial energy less than the depth of the potential well and investigate the energy decay estimates by introducing a Lyapunov ***,the authors establish the finite time blow up results of solutions and give the blow up time with upper bounded initial energy.

关键词： Acoustic boundary condition finite time blow-up general decay infinite memory logarithmic nonlinearity

Game-theoretic multi-agent motion planning in a mixed environment

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Control Theory and Technology 2024年第3期22卷 379-393页

作者： Xiaoxue zhang lihua Xie School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore City 639798Singapore

The motion planning problem for multi-agent systems becomes particularly challenging when humans or human-controlled robots are present in a mixed *** address this challenge,this paper presents an interaction-aware motion planning approach based on game theory in a receding-horizon manner Leveraging the framework provided by dynamic potential games for handling the interactions among agents,this approach formulates the multi-agent motion planning problem as a differential potential game,highlighting the effectiveness of constrained potential games in facilitating interactive motion planning among ***,online learning techniques are incorporated to dynamically learn the unknown preferences and models of humans or human-controlled robots through the analysis of observed *** evaluate the effectiveness of the proposed approach,numerical simulations are conducted,demonstrating its capability to generate interactive trajectories for all agents,including humans and human-controlled agents,operating within the mixed *** simulation results illustrate the effectiveness of the proposed approach in handling the complexities of multi-agent motion planning in real-world scenarios.

关键词： Motion planning Differential potential game Multi-agent systems Constrained potential game

Planar matrices and arrays of Feynman diagrams:poles for higher k

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Communications in Theoretical Physics 2024年第4期76卷 1-13页

作者： Alfredo Guevara Yong zhang Perimeter Institute for Theoretical Physics WaterlooON N2L 2Y5Canada Department of Physics&Astronomy University of WaterlooWaterlooON N2L 3G1Canada Society of Fellows Harvard UniversityCambridgeMA 02138United States of America CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesNo.19A Yuquan RoadBejing 100049China

Planar arrays of tree diagrams were introduced as a generalization of Feynman diagrams that enable the computation of biadjoint amplitudes m_(n)(^(k))for k>*** this follow-up work,we investigate the poles of m_(n)(^(k))from the perspective of such *** general k,we characterize the underlying polytope as a Flag Complex and propose a computation of the amplitude-based solely on the knowledge of the poles,whose number is drastically less than the number of the full *** an example,we first provide all the poles for the cases(k,n)=(3,7),(3,8),(3,9),(3,10),(4,8)and(4,9)in terms of their planar arrays of degenerate Feynman *** then implement simple compatibility criteria together with an addition operation between arrays and recover the full collections/arrays for such *** the way,we implement hard and soft kinematical limits,which provide a map between the poles in kinematic space and their combinatoric *** use the operation to give a proof of a previously conjectured combinatorial duality for arrays in(k,n)and(n-k,n).We also outline the relation to boundary maps of the hypersimplex Δ_(k,n) and rays in the tropical Grassmannian Tr(k,n).

关键词： Feynman diagrams biadjoint amplitudes poles

CONVERGENCE ANALYSIS OF NONCONFORMING QUADRILATERAL FINITE ELEMENT METHODS FOR NONliNEAR COUPLED SCHRODINGER-HELMHOLTZ EQUATIONS

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Journal of Computational Mathematics 2024年第4期42卷 979-998页

作者： Dongyang Shi Houchao zhang School of Mathematics and Statistics Zhengzhou UniversityZhengzhou 450001China

The focus of this paper is on two novel linearized Crank-Nicolson schemes with nonconforming quadrilateral finite element methods(FEMs)for the nonlinear coupled Schrodinger-Helmholtz *** L^(2) and H^(1) estimates of orders O(h^(2)+τ^(2))and O(h^(2)+τ^(2))are derived respectively without any grid-ratio condition through the following two *** is that a time-discrete system is introduced to split the error into the temporal error and the spatial error,which leads to optimal temporal error estimates of order O(τ^(2))in L^(2) and the broken H^(1)-norms,as well as the uniform boundness of numerical solutions in L^(∞) *** other is that a novel projection is utilized,which can iron out the difficulty of the existence of the consistency *** leads to derive optimal spatial error estimates of orders O(h^(2))in L^(2)-norm and O(h)in the broken H^(1)-norm under the H^(2) regularity of the solutions for the time-discrete *** last,two numerical examples are provided to confirm the theoretical ***,h is the subdivision parameter,and τ is the time step.

关键词： Schrodinger-Helmholtz equations Nonconforming FEMs linearized Crank-Nicolson scheme Optimal error estimates

Public transport inclusion and active aging: A systematic review on elderly mobility

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Journal of Traffic and Transportation Engineering(English Edition) 2024年第2期11卷 312-347页

作者： Na zhang Qi Yang School of Humanities Chang'an UniversityXi'an 710064China School of Transportation Engineering Chang'an UniversityXi'an 710064China School of Economics and Management Chang'an UniversityXi'an 710064China

Global aging has brought attention to addressing the elderly mobility dilemma,and a commitment to address inclusive transport in *** inclusion for older adults aims at establishing an age-friendly transport *** a direct policy goal and promoting active aging as an indirect social goal,to help older populations gain access to transport and social *** on the analysis of scientific knowledge mapping over the past 30 years,this study visualizes the hotspots and trends in elderly mobility *** a qualitative analysis of 138 papers,this paper reviews the theoretical foundations for transport inclusion and three themes of elderly mobility research,proposes a framework for public transport(PT)inclusion research as well as future research *** study suggests that transport inclusion can help enhance elderly health,social participation,and subjective *** can improve their travel opportunities for active aging in four ways:opportunity accessibility,physical accessibility,age-friendly informationalization,and cost *** research should pay attention to examining the mechanism of perceived transport inclusion on active aging,expanding the multilevel research space of the capability approach(CA),and exploring the subjectiveobjective integrated research model for PT *** research contributes to the overall knowledge of the theoretical and empirical researches on PT inclusion for the elderly and promotes the integrated application of interdisciplinary knowledge in the field.

关键词： Transportation engineering Elderly mobility Transport-related social exclusion Transport inclusion Active aging