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Fault-tolerant control of energy-conserving networks

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Science China(Information Sciences) 2020年第7期63卷 251-253页

作者： Hao YANG zejun zhang Chencheng zhang Bin JIANG College of Automation Engineering Nanjing University of Aeronautics and Astronautics

Dear editor,Fault-tolerant control (FTC) aims at guaranteeing a system goal to be achieved in spite of the existence of faults [1, 2]. For a network system, both the self-dynamics of each individual subsystem(when there is no coupling) and coupled-dynamics can be faulty, and the FTC design should thus be considered for the overall network system rather

关键词： cooperative control interconnected systems energy conserving network systems Fault tolerant control

The Lushan earthquake and the giant panda:impacts and conservation

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Integrative Zoology 2014年第3期9卷 376-378页

作者： zejun zhang Shibin YUAN Dunwu QI Mingchun zhang Institute of Rare Animals and Plants China West Normal UniversityNanchongChina Chengdu Breeding Base for the Giant Panda ChengduChina China Conservation and Research Center for the Giant Panda WenchuanChina

Earthquakes not only result in a great loss of human life and property,but also have profound effects on the Earth’s *** Lushan earthquake occurred on 20 Apr 2013,with a magnitude of 7.0 and an intensity of 9.0 degrees.A distance of 17.0 km from its epicenter to the nearest distribution site of giant pandas recorded in the Third National Survey was *** use of research on the Wenchuan earthquake(with a magnitude of 8.0),which occurred approximately 5 years ago,we briefly analyze the impacts of the Lushan earthquake on giant pandas and their *** earthquake may interrupt ongoing behaviors of giant pandas and may also cause injury or *** addition,an earthquake can damage conservation facilities for pandas,and result in further habitat fragmentation and ***,from a historical point of view,the impacts of human activities on giant pandas and their habitat may,in fact,far outweigh those of natural disasters such as *** taken to promote habitat restoration and conservation network reconstruction in earthquake-affected areas should be based on requirements of giant pandas,not those of humans.

关键词： conservation earthquake giant panda habitat impact

A novel lectin from mushroom Phellodon melaleucus displays hemagglutination activity,and antitumor activity in a B16 melanoma mouse model

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Food Science and Human Wellness 2023年第5期12卷 1885-1892页

作者： Yuanhui Li Peng Wang zejun zhang Qinghong Liu Department of Vegetables College of HorticultureChina Agricultural UniversityBeijing 100193China College of Food Science&Nutritional Engineering China Agricultural UniversityBeijing 100193China

A novel lectin(termed PML)was purified from fruiting bodies of the edible mushroom Phellodon melaleucus(division Basidiomycota)by ion exchange,hydrophobic interaction,and gel filtration chromatographies,with overall titer recovery~60%and 20-fold *** displayed hemagglutination activity 13319 units/mg toward rabbit ***-PAGE and gel filtration analyses revealed that PML is a homodimeric lectin with a molecular weight of 28.8 *** hemagglutination activity was not inhibited by various simple sugars or their derivatives,but was enhanced by cations Ca^(2+),Mg^(2+),Zn^(2+),and Cu^(2+).The activity was stable in pH range 6–9 and in the temperature range 20–60°*** dichroism(CD)spectroscopic analysis showed that PML was composed primarily ofβ-sheets with lowα-helix *** a B16 melanoma mouse model,PML treatment significantly inhibited tumor growth,and increased cytokine IL-10 *** findings suggest that PML is a potential anticancer therapeutic agent.

关键词： Phellodon melaleucus Lectin Hemagglutination activity Cytokine IL-10 Antitumor activity

Grazing by wild giant pandas does not affect the regeneration of Arundinaria spanostachya

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Journal of Forestry Research 2019年第4期30卷 1513-1520页

作者： Longyan zhang Xiaohong Gan Zhengyang Hou Zhisong Yang zejun zhang Key Laboratory of Southwest China Wildlife Resources Conservation(Ministry of Education) Nanchong 637009Sichuan ProvinceChina Institute of Plant Adaptation and Utilization in Southwest Mountain China West Normal UniversityNanchong 637009China

Arundinaria spanostachya is the main bamboo species on which giant pandas *** on its regeneration capacity to meet the foraging demands of pandas is important to ensure the long-term survival of *** 2014,2 plot types(grazed versus control)were selected in the winter habitat used by one wild giant *** morphological and regeneration characteristics of the bamboo were assessed in the respective plots during 2014 and *** panda avoided feeding on bamboo with a basal diameter of<6 mm,preferentially feeding on intermediate-sized *** density of new shoots and the recruitment rate of shoots were significantly higher in the grazed plots compared to the control *** annual recruitment rate of shoots was markedly higher than the annual mortality rate in the same plot *** grazing,the basal diameter and height of new bamboo were similar between the 2 *** the grazed plots,the basal diameter of new bamboo was similar to that of the *** and foraging by insects were the main factors influencing the survival of new *** results showed that grazing by giant pandas helped the clonal regeneration of *** populations,with the basal diameter of new bamboo shoots meeting the foraging demand of ***,information on the carrying capacity of *** is necessary to ensure sufficient forage matter is available for reintroduced giant ***,fertilization and insect control measures should be implemented during the shooting period to optimize *** resources.

关键词： Arundinaria spanostachya(Yi)Li Grazing Impact Population regeneration Wild giant panda

Effect of China's rapid development on its iconic giant panda

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Chinese Science Bulletin 2013年第17期58卷 2134-2139页

作者： ZHU LiFeng HU YiBo zhang zejun WEI FuWen Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of Sciences

Anthropogenic factors affect biodiversity and have led to the contraction or extinction of animal populations ***,we use historical demographic data,spanning the past 300 years,to show that a rapid distributional contraction of giant pandas took place during the 18th and 19th centuries alongside the increase in human ***-use also underwent a significant change across the areas where giant pandas were found because of government agricultural policy and the introduction of new *** impact of social development on giant pandas includes habitat loss and fragmentation,and range *** findings would facilitate the design of effective conservation strategies that seek to conserve and increase current habitats of this iconic species,especially in areas that our analysis has identified as places where pandas have suffered from high human pressure.

关键词：大熊猫栖息地标志性中国经济保护策略生物多样性种群灭绝人为因素统计数据

New Insight of Fe Valence State Change Using Leaves:A Combined Experimental and Theoretical Study

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Chinese Physics Letters 2022年第10期39卷 55-59页

作者： zejun zhang Yizhou Yang Jie Jiang Liang Chen Shanshan Liang Haiping Fang Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China School of Physics East China University of Science and TechnologyShanghai 200237China School of Physical Science and Technology Ningbo UniversityNingbo 315211China Department of Optical Engineering Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry BiomassZhejiang A&F UniversityHangzhou 311300China

Fe^(2+)is of considerable importance in plant growth and crop ***,most Fe elements in nature favor existing in the trivalent state,which often causes the deficiency of Fe^(2+)in ***,we report the Fe valence state change from Fe^(3+)to Fe^(2+)by using *** valence state change was confirmed by x-ray photoelectron spectroscopy in Fe-Cl@*** transform infrared and ultraviolet-visible spectroscopy demonstrated that aromatic ring groups were included in leaves,and cation-π𝜋interactions between Fe cations and the components containing aromatic rings in leaves were ***,density functional theory calculations revealed that the most stable adsorption site for hydrated Fe^(3+)cation was the region where hydroxyl groups and aromatic rings ***,molecular orbital and charge decomposition analysis revealed that the aromatic rings took the major part(59%)of the whole net charge transfer between leaves and Fe *** work provides a high-efficiency and eco-friendly way to transform the Fe valence state from Fe^(3+)to Fe^(2+),and affords a new insight into the valance change between plant organisms with cations.

关键词： aromatic rings valence

The mechanisms of melanogenesis inhibition by glabridin:molecular docking,PKA/MITF and MAPK/MITF pathways

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Food Science and Human Wellness 2023年第1期12卷 212-222页

作者： Chunxing Pan Xiaoying Liu Yating Zheng zejun zhang Yongliang Li Biao Che Guangrong Liu Lanyue zhang Changzhi Dong Haji Akber Aisa Zhiyun Du Zhengqiang Yuan School of Biomedical and Pharmaceutical Sciences Guangdong University of TechnologyGuangzhou 510006China Infinitus(China)Company Ltd. Guangzhou 510663China Foshan Allen Conney Biological Technology Co. Ltd.Foshan 528225China UniversitéParis Diderot Sorbonne Paris CitéITODYSUMR 7086 CNRSFrance The Key Laboratory of Plant Resources and Chemistry of Arid Zone Xinjiang Technical Institute of Physics and ChemistryChinese Academy of SciencesÜrümqi 830011China

Glabridin is the main ingredient of hydrophobic fraction in licorice extract and has been shown to have anti-melanogenesis activity in ***,the underlying mechanism(s)remain not completely *** aim of this study is thus to elucidate the possible mechanisms related to the melanogenesis suppression by glabridin in cultured B16 murine melanoma cells and in UVA radiation induced hyperpigmentation model of BALB/c mice as *** docking simulations revealed that between catalytic core residues and the *** treatment by glabridin significantly downregulated both transcriptional and/or protein expression of melanogenesis-related factors including melanocyte stimulating hormone receptor(MC1R),microphthalmia-associated transcription factor(MITF),tyrosinase(TYR),TYR-related protein-1(TRP-1)and TRP-2 in B16 *** PKA/MITF and MAPK/MITF signaling pathways were found to be involved in the suppression of melanogenesis by glabridin in B16 *** in vivo glabridin therapy significantly reduced hyperpigmentation,epidermal thickening,roughness and inflammation induced by frequent UVA exposure in mice skins,thus beneficial for skin *** data further look insights into the molecular mechanisms of melanogenesis suppression by glabridin,rationalizing the application of the natural compound for skin healthcare.

关键词： Glabridin Melanogenesis Molecular docking PKA/MITF pathway MAPK/MITF pathway

Ecological scale and seasonal heterogeneity in the spatial behaviors of giant pandas

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Integrative Zoology 2014年第1期9卷 46-60页

作者： zejun zhang James K.SHEPPARD Ronald R.SWAISGOOD Guan WANG Yonggang NIE Wei WEI Naxun ZHAO Fuwen WEI Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijingChina San Diego Zoo Institute for Conservation Research EscondidoCaliforniaUSA Institute of Rare Animals and Plants China West Normal UniversityNanchongChina Foping National Nature Reserve FopingChina

We report on the first study to track the spatial behaviors of wild giant pandas(Ailuropoda melanoleuca)using high-resolution global positioning system(GPS)*** 2008 and 2009,4 pandas(2 male and 2 fe-male)were tracked in Foping Reserve,China for an average of 305 days(±54.8 SE).Panda home ranges were larger than those of previous very high frequency tracking studies,with a bimodal distribution of space-use and distinct winter and summer centers of *** range sizes were larger in winter than in summer,although there was considerable individual *** tracked pandas exhibited individualistic,unoriented and multi-phasic movement paths,with a high level of tortuosity within seasonal core habitats and directed,linear,large-scale movements between *** moved from low elevation winter habitats to high elevation(>2000 m)summer habitats in May,when temperatures averaged 17.5°C(±0.3 SE),and these large-scale movements took<1 month to *** peak in panda mean elevation occurred in Jul,after which they began slow,large-scale movements back to winter habitats that were completed in *** adult female panda made 2 long-distance movements during the mating *** remain close to rivers and streams during winter,possi-bly reflecting the elevated water requirements to digest their high-fiber *** movement path tortuosity and first-passage-time as a function of spatial scale indicated a mean peak in habitat search effort and patch use of approximately 700 *** a high degree of spatial overlap between panda home ranges,particularly in winter,we detected neither avoidance nor attraction behavior between conspecifics.

关键词： behavior GPS habitat use movements panda spatial heterogeneity telemetry

Can science save the giant panda (Ailuropoda melanoleuca)? Unifying science and policy in an adaptive management paradigm

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Integrative Zoology 2011年第3期6卷 290-296页

作者： Ronald R.SWAISGOOD Fuwen WEI William J.MCSHEA David E.WILDT Andrew J.KOUBA zejun zhang San Diego Zoo Institute for Conservation Research EscondidoCaliforniaUSA Institute of Zoology Chinese Academy of ScienceBeijingChina Conservation&Research Center Smithsonian’s National Zoological ParkFront RoyalVirginiaUSA Memphis Zoo MemphisTennesseeUSA Institute of Rare Animals and Plants China West Normal UniversityNanchongSichuanChina

The giant panda(Ailuropoda melanoleuca David,1869)is an iconic species for global conservation,yet field research has only recently advanced to the point where adaptive management is ***,we review recent developments in giant panda conservation science and propose a strategic plan for moving panda conservation *** of scientific,funding,political,and logistical hurdles,few endangered species management programs have embraced adaptive management,wherein management decisions are shaped iteratively by targeted scientific *** threats,such as habitat destruction,anthropogenic disturbance and fragmented nonviable populations,need to be addressed simultaneously by researchers,managers and policy-makers working in concert to understand and overcome these obstacles to species *** the backing of the Chinese Govern-ment and the conservation community,the giant panda can become a high-profile test species for this much touted,but rarely implemented,approach to conservation management.

关键词： adaptive management conservation policy endangered species giant panda strategic conservation plan