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Voter model in a random environment in Zd

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Frontiers of Mathematics in China 2012年第5期7卷 895-905页

作者： Zhichao shan Dayue chen School of Mathematical Sciences Peking University Beijing 100871 China Center for Statistical Science Peking University Beijing 100871 China

We consider the voter model with flip rates determined by {ue, e ∈ Ed}, where Ed is the set of all non-oriented nearest-neighbour edges in the Euclidean lattice Zd. Suppose that {ue, e ∈ Ed} are independent and identically distributed （i.i.d.） random variables satisfying ue ≥ 1. We prove that when d = 2, almost surely for all random environments, the voter model has only two extremal invariant measures： δ0 and δ1.

关键词： Voter model random walk random environment duality

Guards at the gate： physiological and pathological roles of tissue-resident innate lymphoid cells in the lung

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Protein & Cell 2017年第12期8卷 878-895页

作者： Hang cheng chengyan jin jing Wu shan Zhu Yong-Jun Liu jingtao chen Institute of Translational Medicine The First Hospital Jilin University Changchun 130061 China Department of Pediatrics The First Hospital JUin University Changchun 130021 China Department of Thoracic Surgery The Second Hospital Jilin University Changchun 130041 China Sanofi Research and Development Cambridge MA 02139 USA

The lung Is an Important open organ and the primary site of respiration. Many *** diseases develop in the lung, e.g., pneumonia, asthma, chronic obstructive pulmonary diseases （COPDs）, pulmonary fibrosis, and lung cancer. In the lung, innate Immunity serves as the frontline in both anti-irritant response and anti-tumor defense and is also critical for mucosal homeostasis; thus, it plays an important role In containing these pul- monary diseases. Innate lymphoid cells （ILCs）, charac. terized by their strict tissue residence and distinct function in the mucosa, are attracting Increased atten. tion In innate Immunity. Upon sensing the danger slg- nals from damaged epithelium, ILCs activate, proliferate, and release numerous cytoklnes with specific local functions; they also participate in mucosal immune- surveillance, Immune-regulation, and homeostasis. However, when their functions become uncontrolled, ILCs can enhance pathological states and Induce dis- eases. In this review, we discuss the physiologicel and pathological functions of ILC subsets 1 to 3 in the lung, and how the pathogenic environment affects the func- tion and plasticity of ILCs.

关键词： lung innate lymphoid cells pulmonarydiseases regional immunity

Ecological footprint and vulnerability of marine capture fisheries in China

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Acta Oceanologica Sinica 2020年第4期39卷 100-109页

作者： Qi Ding Xiujuan shan Xianshi jin Key Laboratory of Sustainable Development of Marine Fisheries Ministry of Agriculture and Rural Affairs/Shandong Provincial Key Laboratory of Fishery Resources and Ecological EnvironmentYellow Sea Fisheries Research InstituteChinese Academy of Fishery SciencesQingdao 266071China Function Laboratory for Marine Fisheries Science and Food Production Processes Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China

China(herein referred as China’s mainland,and excluding Hong Kong,Macao and Taiwan)ranks as the world’s leading fishing nation,with approximately 11.1 million tons of domestic marine catch acquired in *** fisheries resources in China are mainly exploited by its 11 coastal provinces and municipalities,and the development of fishing industry varies among ***,few studies have examined the exploitation history of the 11 coastal provinces and *** this paper,we systematically quantified the exploitation history of marine fishery resources in China and then measured the vulnerability of the 11 coastal provinces and municipalities of China to a reduction in marine *** analysis suggested that Chinese marine fisheries experienced rapid growth from the mid-1980 s to the end of the 20 th century,and this rapid increase in marine catches were mainly promoted by increased fishing *** total primary production required level amounted to approximately 80%of the average primary productivity in 2017,and Zhejiang,Fujian,shandong,Hainan and Guangdong provinces were the main fishing provinces in *** assessing three dimensions of vulnerability(exposure,sensitivity and adaptive capacity)to the impacts of a reduction in marine catches in the 11 coastal provinces and municipalities,we found that Hainan,Guangxi,Zhejiang and Fujian provinces had high or very high vulnerability,while the municipalities of shanghai and Tianjin had low *** suitable adaptation policies and management plans based on the differences in vulnerability among coastal provinces is important in sustainable fisheries management.

关键词： marine capture fisheries coastal provinces and municipalities exploitation history vulnerability

Influence of Pre-strain on the Mechanical Properties of A6111-T4P Sheet with Bake Hardening

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Acta Metallurgica Sinica(English Letters) 2015年第6期28卷 678-683页

作者： shan-shan Li Jie-Shi chen Jun chen Cedric Xia Danielle Zeng Institute of Forming Technology and Equipment School of Materials Science and Engineering Shanghai Jiao Tong University Research and Innovation Center Ford Motor Company

A6111 is an aluminum alloy, which exhibits good formability and excellent bake hardening property. This study aimed to reveal the influence of strain path, pre-strain orientation （c0 as well as pre-strain level on the mechanical properties of A6111-T4P sheet under bake treatment through uniaxial tension test. （0-5）% pre-strain, 150-170 ℃ bake temperature and 20-30 min bake time were considered in the study by referring to the actual production process. The results show that both pre-strain level and strain path play significant roles in improving the material properties. In the condition that tensile orientation （β） parallel with pre-strain orientation （β= a）, the yield strength can be remarkably improved, and much higher parameter of n in Hockett-Sherby model can be obtained than those when tensile orientation non-parallel with pre-strain orientation （a≠ β）. In addition, when the pre-strain level, paint bake process were settled and β = a, the curves obtained in five tension orientations are similar in the plastic deformation stage.

关键词： Aluminum alloy Pre-strain Bake hardening Mechanical properties

Gut microbiota in antiviral strategy from bats to humans:a missing link in COVID-19

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Science China(Life Sciences) 2021年第6期64卷 942-956页

作者： Jia Luo shan Liang Feng jin Department of Psychology Sichuan Normal UniversityChengdu 610068China Key Laboratory of Microbial Physiological and Metabolic Engineering Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China Key Laboratory of Mental Health Institute of PsychologyChinese Academy of SciencesBeijing 100101China

Bats are a potential natural reservoir for SARS-CoV-2 virus and other viruses detrimental to *** evidence has shown that,in their adaptation to a flight-based lifestyle,remodeling of the gut microbiota in bats may have contributed to immune tolerance to *** evidence from bats provides profound insights into the potential influence of gut microbiota in COVID-19 disease in ***,we highlight recent advances in our understanding of the mechanisms by which the gut microbiota helps bats tolerate deadly viruses,and summarize the current clinical evidence on the influence of gut microbiota on the susceptibility to SARS-CoV-2 infection and risk of COVID-19 leading to a fatal *** addition,we discuss the implications of gut microbiota-targeted approaches for preventing infection and reducing disease severity in COVID-19 patients.

关键词： COVID-19 SARS-CoV-2 gut microbiota bat anti-inflammatory antiviral

Elasto-plastic Analysis of Circular Tunnels in Jointed Rock Masses Satisfy the Hoek-Brown Failure Criterion

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Journal of China University of Mining and Technology 2007年第3期17卷 393-398页

作者： SUN jin-shan LU Wen-bo ZHU Qi-hu chen Ming State Key Laboratory of Water Resource and Hydropower Engineering Science Wuhan University Wuhan Hubei 430072 China

The relationship between the Hoek-Brown parameters and the mechanical response of circular tunnels is il-lustrated. Closed-form and approximate solutions are given for the extent of the plastic zone and the stress and dis-placement fields under axisymmetrical and asymmetric stress conditions. For the same rock masses and under axisym-metrical stress conditions,the radius of the plastic zone in terms of Hoek-Brown criterion is generally an approximation of the radius in terms of the Mohr-Coulomb criterion. The radius in terms of the Hoek-Brown criterion is larger under low stress conditions. For poor quality rock masses (GSI<25),measures (such as grouting,setting rock bolts,etc.) that improve the GSI of rock masses are effective in improving the stability of tunnels. It is not advisable to improve the sta-bility of the tunnels by providing a small support resistance p through shotcrete,except for very poor quality jointed rock masses. Without reference to the quality of the rock mass,the disturbance factor D should not less than 0.5. Meas-ures which disturb rock masses during tunnel construction should be taken carefully when the tunnel depth increases.

关键词： jointed rock masses circular tunnel general Hoek-Brown failure criterion elasto-plastic analysis con-struction measures

Reconfigurable Threshold Logic Element with SET and MOS Transistors

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Chinese Physics Letters 2012年第2期29卷 225-228页

作者： WEI Rong-shan chen jin-Feng chen Shou-Chang HE Ming-Hua College of Physics and Information Engineering Fuzhou UniversityFuzhou 350108

A novel reconfigurable threshold logic element (TLE) using single-electron transistors (SETs) and metal-oxide semiconductor (MOS) transistors is *** proposed TLE is highly reconfigurable,which can perform all two-variable logic functions directly or indirectly,including OR,NOR,AND,NAND,XOR and *** reconfiguration of the TLE is realized by simply configuring the input bits without changing the device *** design methodology can also be applied in the design of a multi-variable *** reconfigurable TLE demonstrates good performance at room temperature with a compact structure and ultralow power *** reconfigurable TLE can be useful in high-density high-performance reconfigurable systems and artificial neural networks.

关键词： parameters figuration simply

Comprehensive evaluation of rural courtyard utilization efficiency:A case study in shandong Province,Eastern China

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Journal of Mountain Science 2020年第9期17卷 2280-2295页

作者： LIU Ya-qiu WANG Ai-ling HOU Jie chen Xin-yu XIA jin-shan College of Resources and Environment Shandong Agricultural UniversityTaian 271018China College of Foreign Language Shandong Agricultural UniversityTaian 271018China

China is implementing the strategy of Rural *** idle and inefficient utilization courtyards is an important measure for rural *** evaluation of courtyard utilization efficiency is the basis of determining the idle and inefficient utilization courtyards in order to revitalizing *** study provided a reference for the optimal use of rural courtyard utilization and revitalization through the quantitative comprehensive evaluation of courtyard utilization efficiency and the classification of courtyard utilization *** shandong Province in Eastern China as study area,we selected eight surveyed villages by stratified sampling *** to the scale of the villages,full survey and sample survey were used,while middleaged men who familiar with the courtyards were selected as the *** a household questionnaire survey and face-to-face interviews from2017 to 2018,578 questionnaires of rural courtyardsin eight villages were *** based on the functions of rural courtyard and land resource conditions,16 comprehensive factors were formulated,involving land conditions,construction conditions and economic benefits,to build the comprehensive evaluation index system of rural courtyard utilization *** the index weight was determined by analytic hierarchy process,and the linear weighted regression model was used to evaluate the utilization efficiency of rural ***,the K-means clustering analysis was used to classify the utilization efficiency of *** results showed that among the eight villages,the average utilization efficiency of courtyards was moderate(one village was low,five were moderate,and two were high).The proportions of both idle and inefficiently utilized courtyards were *** were three vital factors leading to the idle and low efficiency of rural *** were declining rural industries,limited arable land per capita,and more farmer *** this

关键词： Rural courtyard Utilization efficiency Quantitative evaluation Obstacle factor

Characterization,expression dynamics,and potential function of OPA1 for regulation of mitochondrial morphology during spermiogenesis in Phascolosoma esculenta

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Journal of Oceanology and Limnology 2024年第1期42卷 187-200页

作者： Xinming GAO Binbin FENG chen DU Congcong HOU shan jin Daojun TANG Junquan ZHU Key Laboratory of Applied Marine Biotechnology by the Ministry of Education and Key Laboratory of Marine Biotechnology of Zhejiang Province School of Marine SciencesNingbo UniversityNingbo 315211China College of Ecology Lishui UniversityLishui 323000China

Mitochondria undergo morphological changes during spermatogenesis in some *** mechanism and role of mitochondrial morphology regulation,however,remain somewhat *** this study,we analyzed the molecular characteristics,expression dynamics and subcellular localization of optic atrophy protein 1(OPA1),a mitochondrial fusion and cristae maintenance-related protein,to reveal the possible regulatory mechanisms underlying mitochondrial morphology in Phascolosoma esculenta *** full-length cDNA of the *** opa1 gene(Pe-opa1)is 3743 bp in length and encodes 975 amino *** Pe-OPA1 protein is highly conservative and includes a transmembrane domain,a GTPase domain,two helical bundle domains,and a lipid-interacting *** and protein expression was higher in the coelomic fluid(a site of spermatid development)of male *** and increased first and then decreased from March to ***,their expression during the breeding stage was significantly higher than during the non-breeding stage,suggesting that Pe-OPA1 is involved in *** *** Pe-OPA1 protein was more abundant in components consisting of many spermatids than in components without,indicating that Pe-OPA1 mainly plays a role in the spermatid in coelomic ***,Pe-OPA1 was mainly detected in the spermatid *** experiments showed that the Pe-OPA1 are constitutively expressed and co-localized with mitochondria during spermiogenesis,suggesting its involvement in *** *** results provide evidence for Pe-OPA1's involvement in the regulation of mitochondrial morphology during spermiogenesis.

关键词： optic atrophy protein 1(OPA1) spermiogenesis Phascolosoma esculenta mitochondrial dynamics spermatid