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Chinese Journal of Structural Chemistry 2017年第1期36卷 135-142页

作者：欧光川廖阳向岳峰袁先友李治章 Key Laboratory of Comprehensive utilization of Advantage Plants Resources in Hunan South/department of Biology and Chemistry Hunan University of Science and Engineering

The reactions of the four-coordinated macrocyclic copper complex [CuL]（ClO4）2（L = 1,4,8,11-tetraazacyclotetradecane） with NH4VO3 under different conditions gave three inorganic-organic hybrid materials of [CuL][VO3]2·2.33H2O（1）, [CuL]3[V（10）O（28）]·8H2O（2） and [Cu L]3[V6O（18）]·8H2O（3）. Single-crystal X-ray diffraction analyses reveal that three diverse vanadium polyoxoanions, [V6O（18）]6- ring, [V（10）O（28）]6- cluster, and [V（12）O（35）]^10- ring, were isolated from the same reactant NH4VO3 under different conditions. The [CuL]^2＋ bridges the [V10O28]6- clusters to form a two-dimensional sheet in 2, and link the [V6O（18）]^6- rings in 1 and [V（12）O（35）]^10- rings in 3 into three-dimensional frameworks, respectively.

关键词： polyoxovanadate macrocyclic copper(Ⅱ) complexes hybrid materials

The autophagy gene ATG8 affects morphogenesis and oxidative stress tolerance in Sporisorium scitamineum

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Journal of Integrative Agriculture 2019年第5期18卷 1024-1034页

作者： ZHANG Bin CUI Guo-bing CHANG Chang-qing WANG Yi-xu ZHANG Hao-yang CHEN Bao-shan DENG Yi-zhen JIANG Zi-de department of Plant Pathology/State Key Laboratory for Conservation and utilization of Subtropical Agro-Bioresources South China Agricultural University Integrative Microbiology research Centre/Guangdong Province Key Laboratory of Microbial Signals and Disease Control South China Agricultural University College of Life Science and Technology/State Key Laboratory for Conservation and utilization of Subtropical Agro-Bioresources Guangxi University

The basidiomycetous fungus Sporisorium scitamineum causes sugarcane smut that leads to severe economic losses in the major sugarcane growing areas in China,India and Brazil,*** is a conserved pathway in eukaryotes for bulk degradation and cellular recycling,and was shown to be important for fungal cell growth,development,and ***,physiological function of autophagy has not been studied in *** this study,we identified a conserved Atg8 protein,named as SsAtg8 and characterized its *** results showed that autophagy was blocked in the ssatg8Δ mutant,in nitrogen *** ssatg8Δ mutant formed pseudohypha frequently and was hypersensitive to oxidative ***,mating or filamenation was unaffected in the ssatg8Δ mutant in *** we demonstrate that autophagy is dispensable for *** mating/filamentation,while critical for oxidative stress tolerance and proper morphology in sporidial stage.

关键词： Atg8 autophagy fungus Sporisorium scitamineum morphogenesis oxidative stress tolerance

Modulation of the Nogo signaling pathway to overcome amyloid-β-mediated neurite inhibition in human pluripotent stem cell-derived neurites

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Neural Regeneration research 2025年第9期20卷 2645-2654页

作者： Kirsty Goncalves Stefan Przyborski department of Biosciences Durham UniversityDurhamUK Reprocell Europe Ltd. GlasgowUK

Neuronal cell death and the loss of connectivity are two of the primary pathological mechanisms underlying Alzheimer's *** accumulation of amyloid-βpeptides,a key hallmark of Alzheimer's disease,is believed to induce neuritic abnormalities,including reduced growth,extension,and abnormal growth cone morphology,all of which contribute to decreased ***,the precise cellular and molecular mechanisms governing this response remain *** this study,we used an innovative approach to demonstrate the effect of amyloid-βon neurite dynamics in both two-dimensional and three-dimensional cultu re systems,in order to provide more physiologically relevant culture *** utilized various methodologies,including the addition of exogenous amyloid-βpeptides to the culture medium,growth substrate coating,and the utilization of human-induced pluripotent stem cell technology,to investigate the effect of endogenous amyloid-βsecretion on neurite outgrowth,thus paving the way for potential future applications in personalized ***,we also explore the involvement of the Nogo signaling cascade in amyloid-β-induced neurite *** demonstrate that inhibition of downstream ROCK and RhoA components of the Nogo signaling pathway,achieved through modulation with Y-27632(a ROCK inhibitor)and Ibuprofen(a Rho A inhibitor),respectively,can restore and even enhance neuronal connectivity in the presence of amyloid-β.In summary,this study not only presents a novel culture approach that offers insights into the biological process of neurite growth and inhibition,but also proposes a specific mechanism for reduced neural connectivity in the presence of amyloid-βpeptides,along with potential intervention points to restore neurite ***,we aim to establish a culture system that has the potential to serve as an assay for measuring preclinical,predictive outcomes of drugs and their ability to promote neurite outgrowth,both generally and in a patie

关键词： Alzheimer's disease induced pluripotent stem cell neurite outgrowth neuron Nogo Rho A ROCK stem cell three-dimensional culture

Single-atom catalysis for organic reactions

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Chinese Chemical Letters 2023年第6期34卷 121-129页

作者： Hanyu Hu Jiangbo Xi Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry Key Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationHubei Key Laboratory of Novel Reactor and Green Chemical TechnologySchool of Chemistry and Environmental EngineeringWuhan Institute of TechnologyWuhan 430205China

Metal-based catalysis,including homogeneous and heterogeneous catalysis,plays a significant role in the modern chemical *** catalysis is widely used due to the high efficiency,easy catalyst separation and ***,the metal-utilization efficiency for conventional heterogeneous catalysts needs further improvement compared to homogeneous *** tackle this,the pursing of heterogenizing homogeneous catalysts has always been attractive but *** a recently emerging class of catalytic material,single-atom catalysts(SACs)are expected to bridge homogeneous and heterogeneous catalytic process in organic reactions and have arguably become the most active new frontier in catalysis *** this review,a brief introduction and development history of single-atom catalysis and SACs involved organic reactions are *** addition,recent advances in SACs and their practical applications in organic reactions such as oxidation,reduction,addition,coupling reaction,and other organic reactions are thoroughly *** understand structure-property relationships of single-atom catalysis in organic reactions,active sites or coordination structure,metal atom-utilization efficiency(e.g.,turnover frequency,TOF calculated based on active metal)and catalytic performance(e.g.,conversion and selectivity)of SACs are comprehensively ***,the application limitations,development trends,future challenges and perspective of SAC for organic reaction are discussed.

关键词： Single-atom catalysis Active site Metal utilization Organic reaction Catalytic performance

Pion emission in α-particle interactions with various targets of nuclear emulsion detector

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Chinese Physics C 2015年第9期39卷 35-42页

作者： A.Abdelsalam Z.Abou-Moussa N.Rashed B.M.Badawy H.A.Amer W.Osman M.M.El-Ashmawy N.Abdallah Physics department Faculty of Science Cairo University Mohamed El-Nadi High Energy Lab Faculty of Science Cairo University Physics department Faculty of Science Fayoum University reactor Physics department Nuclear Research Center Atomic Energy Authority Nuclear and Radiological Regulatory Authority NRRA

The behavior of relativistic hadron multiplicity for 4He-nucleus interactions is investigated. The experi- ment is carried out at 2.1 A and 3.7 A GeV （Dubna energy） to search for the incident energy effect on the interactions inside different emulsion target nuclei. Data are presented in terms of the number of emitted relativistic hadrons in both forward and backward angular zones. The dependence on the target size is presented. For this purpose the statistical events are discriminated into groups according to the interactions with H, CNO, Em, and AgBr target nuclei. The separation of events, into the mentioned groups, is executed based on Glauber＇s multiple scattering theory approach. Features suggestive of a decay mechanism seem to be a characteristic of the backward emission of relativistic hadrons. The results strongly support the assumption that the relativistic hadrons may already be emitted during the de-excitation of the excited target nucleus, in a behavior like that of compound-nucleus disintegration. Regarding the limiting fragmentation hypothesis beyond 1 A GeV, the target size is the main parameter affecting the backward production of the relativistic hadron. The incident energy is a principal factor responsible for the forward relativistic hadron production, implying that this system of particle production is a creation system. However, the target size is an effective parameter as well as the projectile size considering the geometrical concept regarded in the nuclear fireball model. The data are analyzed in the framework of the FRITIOF model.

关键词： α-particle interactions at Dubna energies shower particle sources target size dependence FRITIOFmodel

Effects of supplementation of Brachiaria brizantha cv. Piatá and Napier grass with Desmodium distortum on feed intake,digesta kinetics and milk production in crossbred dairy cows

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Animal Nutrition 2018年第2期4卷 222-227页

作者： Mupenzi Mutimura Cyprian Ebong Idupulapati M.Rao Ignatius V.Nsahlai Rwanda Agriculture Board Department of Animal Production Association for Strengthening Agricultural research in Eastern and Central Africa International Centre for Tropical Agriculture United States department of Agriculture Agricultural Research ServicePlant Polymer Research UnitNational Center for Agricultural Utilization Research University of Kwa Zulu-Natal School of AgriculturalEarth and Environmental SciencesDepartment of Animal Science and Poultry SciencePietermaritzburg Campus

This study was planned to analyse the basis that make Brachiaria species with greater feeding value than Napier grass(Pennisetum purpureum) for lactating dairy *** lactating crossbred cows were stallfed on Brachiaria brizantha *** or Napier grass *** Cameroon supplemented(mixed on fresh matter basis) or unsupplemented with Desmodium distortum, a forage *** cows were fed on fresh matter basis under small-holder farming *** showed that *** *** had higher contents of dry matter(DM), crude protein(CP) and organic matter(OM), but lower contents of neutral detergent fibre(NDF) and acid detergent fibre(ADF) than Napier grass(P < 0.001).The legume supplementation increased intakes of CP and metabolizable energy(ME; P < 0.001), with higher effect on cows fed *** *** than on cows fed Napier *** daily milk yield was lower on diets based on Napier grass than those based on *** ***(P < 0.001).The retention time of the particle phase of digesta in the digestive tract was longer on Napier grass(83.1 h) than on *** ***(62.8 h)(P < 0.05).It was concluded that in dairy cows, legume supplementation of *** *** increases nutrient intake, hence resulting in higher milk yields than supplementation of Napier grass.

关键词： Brachiaria grass Tropical grasses Napier grass Nutrient intake Legume supplementation Retention time

Pest management with biopesticides

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Frontiers of Agricultural Science and Engineering 2018年第3期5卷 295-300页

作者： James N.SEIBER Joel COATS Stephen O.DUKE Aaron D.GROSS department of Environmental Toxicology University of CaliforniaDavis department of Entomology Iowa State University Natural Products utilization research Agricultural Research Service United States Department of AgricultureUniversityMS department of Entomology Virginia Polytechnic Institute and State University

Biopesticides are attracting interest as alternatives to conventional pesticides but without many of the non-target effects, promising a better record of safety and sustainability in pest control practices. In this article we summarize and discuss the current status and future promise of biopesticides, including how biopesticides use may increase the quality and safety of the food supply.

关键词： biopesticide GMO crops pest management

Standardized gum tapping techniques to maximize yield from high-value Indian tree,Sterculia urens

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Journal of Forestry research 2017年第3期28卷 615-619页

作者： Amol Vasishth Vipan Guleria department of Forest Products&utilization College of Horticulture&ForestryJhalrapatan-JhalawarRajasthan 326023India Regional Horticulture research&Training Station Jachh DistrictKangraHimachal PradeshIndia

Industrial applications of natural gums have been expanding tremendously, so gum collection from trees provides an important livelihood for local dwellers in drought-prone Rajasthan and its surroundings states. Traditional gum tapping is crude and unscientific; deep incision, untimely extraction and high concentration of chemicals in gum have affected Sterculia urens species in its natural habitat. In studies 2 years on trees having diameter at breast height 〉40 cm from natural stands to maximize gum collection and standardize the tapping method （bore holes vs. V blazes）, tapping season, chemical and concentration, different tapping techniques were tes- ted. For tapping maximum gum was collected using bore hole. Ethephon was better as extraction chemical than sulphuric acid. Bore-hole tapping with a 5-cm hole and ethephon at 300 mg/mL yielded the most gum （135.20 g/ tree）. Ethephon at 300 mg/mL yielded the most gum. Ethephon induced gummosis without affecting the health of tree. Tapping seasons also significantly affected the gum yield; the most gum was obtained in April-June.

关键词： Bore-hole tapping Ethephon Natural gum Sterculia urens Tapping

Ar-plasma enhanced copper-nickel alloy catalysis for ammonia synthesis

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Waste Disposal and Sustainable Energy 2022年第2期4卷 149-155页

作者： Zhou Yimeng Lv Jiabao Peng Yaqi Lin Xiaoqing Lv Xingjie Ye Qiulin Liu Shaojun Wu Angjian Li Xiaodong State Key Laboratory of Clean Energy utilization Department of Energy EngineeringZhejiang UniversityHangzhou310028China

Ammonia(NH_(3))synthesis via electrocatalytic nitrogen reduction generally suffers from low NH_(3)yield and faradaic *** with activating stable,low-solubility N_(2),the electrochemical conversion of nitrates to ammonia provides a more reasonable route for NH_(3)***,we introduce Ar-plasma to enhance the interaction between copper-nickel alloys and carbon substrate to improve the performance of NH_(3)*** NH_(3)faradaic efficiency from nitrate is nearly 100%and the yield rate is over 6000μgNH_(3)cm^(−2)h^(−1).DFT(density functional theory)calculation reveals the high performance of Cu_(50)Ni_(50)originates from the lower energy barrier on the reaction path and the closer position to the Fermi level of the d-band *** work offers a promising strategy for plasma-modified electrocatalyst to promote ammonia synthesis via nitrate reduction.

关键词： Ammonia synthesis Plasma modification Nitrate conversion Copper-nickel alloy

Characterization of Gh SERK2 and its expression associated with somatic embryogenesis and hormones level in Upland cotton

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Journal of Integrative Agriculture 2018年第3期17卷 517-529页

作者： LIU Zheng-jie ZHAO Yan-peng ZENG Ling-he ZHANG Yuan WANG Yu-mei HUA Jin-ping College of Agronomy and Biotechnology China Agricultural University/Key Laboratory of Crop Heterosis and Utilization Ministry of Education/Beijing Key Laboratory of Crop Genetic Improvement United States department of Agriculture - Agricultural research Service (USDA-ARS) Crop Genetics Research Unit research Institute of Cash Crop Hubei Academy of Agricultural Sciences

Somatic embryogenesis （SE） is one of the most important steps during regeneration of cotton, but the molecular mechanism of SE remains unclear. SOMATIC EMBRYOGENSIS RECEPTOR KINASE （SERK） gene is known to function in SE. A homolog GhSERK2 （accession number： JF430801） was cloned from Upland cotton and characterized for its functions in SE. GhSERK2 expressed in different tissues and showed higher expression level in floral organs than vegetative ones with the highest levels in ovule and anther. GhSERK2 expressed during SE with a high level at globular embryos stage. Upon treatment with indole-3-butytic acid （IBA）, the transcription level of GhSERK2 was induced and promoted SE subsequently. A 2-day treatment of 2,4-dichlorophenoxyacetic acid （2,4-D） induced the expression of GhSERK2, but treatments of 2,4-D for longer periods sharply inhibited the GhSERK2 transcription level of embryogenic callus （EC）. The levels of hormones, including 3-indoleacetic acid （IAA）, abscisic acid （ABA）, and brassinosteroid （BR）, were increased in the initial calli induced from the over-expression of GhSERK2 cotton. Our results indicated that GhSERK2 expression was associated with induction of SE and closely related to hormone levels during tissue culture in Upland cotton, and the gene might play an important role in regeneration of cotton.

关键词： GhSERK2 somatic embryogenesis hormone level expression pattern Upland cotton (Gossypium hirsutum L.)