检索结果-南通市图书馆

Fine-mapping of a candidate gene for web blotch resistance in Arachis hypogaea l.

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2024年第5期23卷 1494-1506页

作者： Xiaohui Wu Mengyuan Zhang zheng zheng Ziqi Sun Feiyan Qi Hua liu Juan Wang Mengmeng Wang Ruifang Zhao Yue Wu Xiao Wang Hongfei liu Wenzhao Dong Xinyou Zhang College of Agronomy Henan Agricultural UniversityZhengzhou 450046China Henan Academy of Agricultural Sciences/Henan Academy of Crop Molecular Breeding/Key laboratory of Oil Crops in Huang-Huai-Hai Plain Ministry of Agriculture and Rural Affairs/Henan Provincial Key Laboratory for Oil Crop ImprovementZhengzhou 450002China The Shennong laboratory Zhengzhou 450002China Shangqiu Academy of Agricultural and Forestry Sciences Shangqiu 476000China

Peanut(Arachis hypogaea l.)is a globally important oil *** blotch is one of the most important foliar diseases affecting peanut,which results in serious yield losses *** web blotch-resistant peanut varieties is the most effective and economically viable method for minimizing yield losses due to web *** the current study,a bulked segregant analysis with next-generation sequencing was used to analyze an F2:3 segregating population and identify candidate loci related to web blotch *** on the fine-mapping of the candidate genomic interval using kompetitive allele-specific PCR(KASP)markers,we identified a novel web blotch resistance-related locus spanning approximately 169 kb on chromosome *** region included four annotated genes,of which only Arahy.35VVQ3 had a non-synonymous single nucleotide polymorphism in the coding region between the two *** markers(Chr.16.12872635 and Chr.16.12966357)linked to this gene were shown to be co-segregated with the resistance of peanut web blotch by 72 randomly selected recombinant inbred lines(RIl),which could be used in marker-assisted breeding of resistant peanut varieties.

关键词： peanut web blotch bulked segregant analysis KAsP markers resistant gene

基于功率指令切换的双级式构网型光伏故障穿越控制策略

在线全文

学校读者我要写书评

暂无评论

电网技术 2024年第3期48卷 1281-1290页

作者：吕思卓郑超姜静雅中国电力科学研究院有限公司北京市海淀区100192

在新型电力系统构建中,构网型光伏将发挥巨大作用。但受限于电力电子器件过流能力,目前针对构网型光伏的故障穿越控制策略还需进一步完善。综合考虑逆变器稳态和暂态过流抑制,提出了一种基于功率指令切换和虚拟阻抗的双级式构网型光伏... 详细信息

在新型电力系统构建中,构网型光伏将发挥巨大作用。但受限于电力电子器件过流能力,目前针对构网型光伏的故障穿越控制策略还需进一步完善。综合考虑逆变器稳态和暂态过流抑制,提出了一种基于功率指令切换和虚拟阻抗的双级式构网型光伏发电故障穿越控制策略,该策略计及光伏直流侧动态响应,能够实现满足电流限幅约束的前提下向并网电压提供无功支撑,同时保持故障期间构网型光伏对系统惯性的支撑特性,提升大扰动下光伏换流器暂态功角稳定性。仿真结果表明,在电网发生严重电压跌落的情况下,所提控制策略可在保持逆变器直流侧电压稳定的同时实现故障穿越功能。

关键词：构网型光伏虚拟同步控制故障穿越控制功率指令虚拟阻抗

Using NH_(2)-MIl-125(Ti)for efficient removal of Cr(Ⅵ)and Rh B from aqueous solutions:Competitive and cooperative behavior in the binary system

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第2期136卷 437-450页

作者： lei zheng lixia Sun Jiangbo Qiu Junling Song luyi Zou Yue Teng Yongzhong Zong Hongyan Yu School of Environmental and Civil Engineering Jiangnan UniversityWuxi 214122China School of Chemical and Material Engineering Jiangnan UniversityWuxi 214122China Kunming South Water Co. Ltd.Kunming 650501China Jiangsu Key laboratory of Anaerobic Biotechnology Jiangnan UniversityWuxi 214122China

The coexistence of inorganic and organic contaminants is a challenge for real-life water treatment ***,in this research,we used NH_2-MIl-125(Ti)to evaluate the single adsorption of hexavalent chromium(Cr(Ⅵ))or Rhodamine B(RhB)in an aqueous solution and further investigate simultaneous adsorption experiments to compare the adsorption behavior *** main influencing factors,for example,reaction time,initial concentration,reaction temperature,and pH were studied in *** all reaction systems,the pseudo-second-order kinetic and langmuir isotherm models were well illuminated the adsorption progress of Cr(Ⅵ)and *** studies showed that the adsorption process was spontaneous and *** compared to the single system,the adsorption capacity of Cr(Ⅵ)in the binary system gradually decreased as the additive amount of RhB increased,whereas the adsorption capacity of RhB in the binary system was expanded *** the binary reaction system contained 100 mg/l Cr(Ⅵ),the removal rate of RhB increased to 97.58%.The formation of Cr(Ⅵ)-RhB and Cr(Ⅲ)-RhB complexes was the cause that provided facilitation for the adsorption of *** findings prove that the interactions during the water treatment process between contaminants may obtain additional benefits,contributing to a better adsorption capacity of co-existing contaminant.

关键词： Adsorption Heavy metal ion Organic dye Simultaneous removal Mechanism studies

Cellular Cd^(2+)fluxes in roots confirm increased Cd availability to rice(Oryza sativa l.)induced by soil acidifications

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第5期139卷 516-526页

作者： Xiaoyi Sun Meng Wang luyao Qin lei Yu Jing Wang Han zheng Wenneng Zhou Shibao Chen State Key laboratory of Efficient Utilization of Arid and Semi-arid Arable land in Northern China/Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural SciencesBeijing 100081China Guangdong Provincial Key laboratory of Water Quality Improvement and Ecological Restoration for Watersheds School of EcologyEnvironment and ResourcesGuangdong University of TechnologyGuangzhou 510006China

Soil acidifications become one of the main causes restricting the sustainable development of agriculture and causing issues of agricultural product *** order to explore the effect of different acidification on soil cadmium(Cd)availability,soil pot culture and hydroponic(soil potting solution extraction)were applied,and non-invasive micro-test technique(NMT)was *** three different soil acidification processes were simulated,including direct acidification by adding sulfuric acid(AP1),acid rain acidification(AP2)by adding artificial simulated acid rain and excessive fertilization acidification by adding(NH_(4))_(2)SO_(4)(AP3).The results showed that for direct acidification(AP1),DTPA-Cd concentration in field soils in liaoning(S1)and Zhejiang(S2)increased by 0.167-0.217 mg/kg and 0.181-0.346 mg/kg,respectively,compared with control *** soil pH decreased by 0.45 units in S1,the Cd content of rice stems,leaves and roots increased by 0.48 to 6.04 mg/kg and 2.58 to 12.84mg/kg,respectively,When the pH value of soil S1 and S2 decreased by 0.20 units,the average velocity of Cd^(2+)at 200μm increased by 10.03-33.11 pmol/cm~2/sec and 21.33-52.86pmol/cm^(2)/sec,respectively,and followed the order of AP3>AP2>*** summary,different acidification measures would improve the effectiveness of Cd,under the same pH reduction condition,fertilization acidification increased Cd availability most significantly.

关键词： Soil acidification Cadmium Non-invasive micro-test technique Bioavailability

Advances in doping strategies for sodium transition metal oxides cathodes:A review

在线全文

学校读者我要写书评

暂无评论

Frontiers in Energy 2024年第2期18卷 141-159页

作者： Zhijing ZHang Haoze ZHang Yaopeng WU Wei YAN Jiujun ZHang Yun zheng lanting QIAN Department of Chemical Engineering Waterloo Institute of NanotechnologyUniversity of WaterlooWaterloo ON N2L 3G1Canada School of Mechanical and Automotive Engineering South China University of TechnologyGuangzhou 510640China Institute of New Energy Materials Science and Engineering School of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China

The electrochemistry of cathode materials for sodium-ion batteries differs significantly from lithium-ion batteries and offers distinct ***,the progress of commercializing sodium-ion batteries is currently impeded by the inherent inefficiencies exhibited by these cathode materials,which include insufficient conductivity,slow kinetics,and substantial volume changes throughout the process of intercalation and deintercalation ***,numerous methodologies have been utilized to tackle these challenges,encompassing structural modulation,surface modification,and elemental *** paper aims to highlight fundamental principles and strategies for the development of sodium transition metal oxide ***,it emphasizes the role of various elemental doping techniques in initiating anionic redox reactions,improving cathode stability,and enhancing the operational voltage of these cathodes,aiming to provide readers with novel perspectives on the design of sodium metal oxide cathodes through the doping approach,as well as address the current obstacles that can be overcome/alleviated through these dopant strategies.

关键词： sodium-ion batteries transition metal cathode doping strategy

Effect of mutations on acetohydroxyacid synthase(AHAS)function in Cyperus difformis l.

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2024年第1期23卷 177-186页

作者： Xiaotong Guo Xiangju li zheng li licun Peng Jingchao Chen Haiyan Yu Hailan Cui State Key laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China College of Resources and Environmental Sciences China Agricultural UniversityBeijing 100193China

Cyperus difformis *** a troublesome weed in paddy fields and has attracted attention due to its resistance to acetohydroxyacid synthase(AHAS)*** was found that the amino acid mutation in AHAS was the primary cause for the resistance of Cyperus ***,the effect of different mutations on AHAS function is not clear in Cyperus *** confirm the effect of mutations on AHAS function,six biotypes were collected,including Pro197Arg,Pro197Ser,Pro197leu,Asp376Glu,Trp574leu and wild type,from Hunan,Anhui,Jiangxi and Jiangsu provinces,China and the function of AHAS was *** AHAS in vitro inhibition assay results indicated that the mutations decreased the sensitivity of AHAS to pyrazosulfuron-ethyl,in which the I_(50)(the half maximal inhibitory concentration)of wild type AHAS was 0.04μmol l^(-1)and Asp376Glu,Pro197leu,Pro197Arg,Pro197Ser and Trp574leu mutations were 3.98,11.50,40.38,38.19 and 311.43μmol l^(-1),*** the determination of enzyme kinetics parameters,the Km and the maximum reaction velocity(Vmax)of the wild type were 5.18 mmol l^(-1)and 0.12 nmol mg^(-1)min^(-1),respectively,and the Km values of AHAS with Asp376Glu,Trp574leu,Pro197leu and Pro197Ser mutations were 0.38-0.93 times of the wild *** Km value of the Pro197Arg mutation was 1.14times of the wild type,and the Vmax values of the five mutations were 1.17-3.33-fold compared to the wild *** was found that the mutations increased the affinity of AHAS to the substrate,except for the Pro197Arg *** a concentration of 0.0032-100 mmol l^(-1)branched-chain amino acids(BCAAs),the sensitivity of the other four mutant AHAS biotypes to feedback inhibition decreased,except for the Pro197Arg *** study elucidated the effect of different mutations on AHAS function in Cyperus difformis and provided ideas for further study of resistance development.

关键词： acetohydroxyacid synthase(AHAS) mutation enzyme function Cyperus difformis

Effects of Different Culture Conditions and Growth States on the Structure and Hemostatic Properties of Coscinodiscus sp.

在线全文

学校读者我要写书评

暂无评论

Journal of Ocean University of China 2024年第4期23卷 1121-1134页

作者： HE zheng lI Qinfeng lIU Jinfeng HUI Guangyan FENG Chao CHENG Xiaojie CHEN Xiguang College of Marine life Science Sanya Oceanographic InstitutionOcean University of ChinaQingdao 266003China laboratory for Marine Drugs and Bioproducts Qingdao Marine Science and Technology CenterQingdao 266237China Department of Stomatology Qingdao Women and Children’s HospitalQingdao 266034China Department of Stomatology Qingdao Special Servicemen Recuperation Center of PLA NavyQingdao 266071China

As a renewable marine inorganic material,Coscinodiscus *** significant potential in the field of rapid ***,the low yield of Coscinodiscus *** limits the *** this study,two new culture modes were adopted to increase the production of Coscinodiscus sp.,the effect of changes in culture conditions and growth status on the hemostatic activity of diatoms was *** prevent Coscinodiscus *** sinking in culture,the suspension culture mode was realized by adding0.5%*** semi-continuous high nutrient concentration culture mode increased the cell density of Coscinodiscus *** 11000cells m l^(-1)and shorten the culture cycle to 5 *** terms of coagulation activity,the addition of frustules reduced the in vitro coagulation time by half and the activation time of coagulation by 70%.The hemolysis rate and cytotoxicity of frustules harvested in the two culture modes did not change *** results showed that suspension culture mode and high nutrient concentration culture mode only changed the growth state of Coscinodiscus sp.,while the hemostatic performance remained stable.

关键词： diatom culture Coscinodiscus sp. frustule hemostatic material hemorrhage control

Recent progresses of exosome-liposome fusions in drug delivery

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical letters 2024年第2期35卷 107-117页

作者： lulu zheng Bo Hu Deyao Zhao Wenjing liu Qing liu Yuanyu Huang Shaobo Ruan School of life Science Advanced Research Institute of Multidisciplinary ScienceSchool of Medical TechnologyKey Laboratory of Molecular Medicine and BiotherapyKey Laboratory of Medical Molecule Science and Pharmaceutics EngineeringBeijing Institute of TechnologyBeijing 100081China Department of Radiation Oncology The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450000China Beijing Key laboratory of Drug Resistance Tuberculosis Research Beijing Tuberculosis and Thoracic Tumor Research Instituteand Beijing Chest HospitalCapital Medical UniversityBeijing 101149China

Exosomes are membrane-bound nanoscale extracellular vesicles,which produced by almost all *** to the excellent biocompatibility,long circulation time as well as low immunogenicity,exosomes as naturally-derived drug delivery carriers have experienced explosive growth over the past ***,issues such as insufficient loading efficiency,heterogeneous delivery efficiency,uncontrollable targeting ability,and low production limit their wide ***,the emerging exosome-liposome fusion strategy has become a potential approach to solve such ***,this review mainly focuses on the currently developed exosome-liposome fusion strategy and their application in drug delivery as well as disease *** review aims to shed light on the advantages of fusion strategy in drug delivery and provides a better understanding for more rational *** current challenge and future perspective regarding their clinical translation and application will also be discussed.

关键词： Exosome liposome Membrane fusion Drug delivery Disease treatment

Biomineralization of soil with crude soybean urease using different calcium salts

在线全文

学校读者我要写书评

暂无评论

Journal of Rock Mechanics and Geotechnical Engineering 2024年第5期16卷 1788-1798页

作者： Yajie Weng Junjie zheng Hanjiang lai Mingjuan Cui Xingzhi Ding School of Civil and Hydraulic Engineering Huazhong University of Science and TechnologyWuhan430074China Zijin School of Geology and Mining Fuzhou UniversityFuzhou350108China College of Civil Engineering Fuzhou UniversityFuzhou350116China

Calcium salt is an important contributing factor for calcium-based *** study the effect of calcium salt on soil biomineralization using crude soybean urease,the calcium salts,including the calcium chloride (CaCl_(2)),calcium acetate ((CH_(3)COO)_(2)Ca) and calcium nitrate (Ca(NO_(3))_(2)),were used to prepare the biotreatment solution to carry out the biomineralization tests in this *** series of biomineralization tests in solution and sand column,respectively,were *** electron microscopy (SEM) and X-ray diffraction (XRD) were performed to determine the microscopic characteristics of the precipitated calcium carbonate (CaCO_(3)) *** experimental results indicate that the biomineralization effect is the best for the CaCl2 case,followed by (CH_(3)COO)_(2)Ca,and worst for Ca(NO_(3))_(2) under the test conditions of this study (i.e.1 mol/l of calcium salt-urea).The mechanism for the effect of the calcium salt on the biomineralization of crude soybean urease mainly involves: (1) inhibition of urease activity,and (2) influence on the crystal size and morphology of CaCO_(3).Besides Ca^(2+) ,the anions in solution can inhibit the activity of crude soybean urease,and NO_(3)− has a stronger inhibitory effect on the urease activity compared with both CH_(3)COO^(−) and Cl^(−) .The co-inhibition of Ca^(2+) and NO_(3)− on the activity of urease is the key reason for the worst biomineralization of the Ca(NO_(3))_(2) case in this *** difference in biomineralization between the CaCl_(2) and (CH_(3)COO)_(2) Ca cases is strongly correlated with the crystal morphology of the precipitated CaCO_(3).

关键词： Biomineralization Crude soybean urease Calcium salt Influence mechanism