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Morphological responses to water-level fluctuations of two submerged macrophytes, Myriophyllum spicatum and Hydrilla verticillata

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Journal of Plant Ecology 2013年第1期6卷 64-70页

作者： xiaoke zhang Xueqin Liu Qingzhang Ding Institute of Hydrobiology Chinese Academy of SciencesWuhan 430072China Graduate University of Chinese Academy of Sciences Beijing 100049China

Aims Myriophyllum spicatum and Hydrilla verticillata are common submerged macrophytes in the Yangtze River *** investigate their tolerances and adaptations to water-level fluctuations,an experiment was conducted in a *** We designed five different amplitudes of water-level fluctuations as static,615,630,660 and 690 cm during the 74 days of the *** each amplitude treatment,two cultivation methods were examined as monoculture and mixed *** Findings The results showed that *** had greater morphological responses to water-level fluctuations than *** amplitude had significant effects on branch number,shoot length and root dry weight(DW)of ***,whereas it only had significant effect on branch number of *** fluctuating amplitude and cultivation method had significant effects on total DW of ***,which was higher in monoculture than mixed *** total DW of *** was affected by fluctuating amplitude only,and the largest biomass was in the amplitude of 630 *** DW of *** was largest in the amplitude of 630 cm,high amplitude of water-level fluctuations would inhibit flowering and seed *** DW proportion was significantly affected by fluctuating amplitude and cultivation method in both species,and the root DW proportion of *** was significantly higher in the amplitude-of 690 *** conclude that moderate amplitude of water-level fluctuations can promote the distribution and growth of both species,and in order to accelerate the restoration of both species in natural habitats,the optimum amplitude should be keep at 615 to 630 cm.

关键词： Myriophyllum spicatum Hydrilla verticillata water-level fluctuations water regime adaptation

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小麦Glu-D1位点高分子量麦谷蛋白亚基对面条品质影响研究

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核农学报 2025年第1期39卷 88-95页

作者：张玉燕周红伟叶皓炫张晓科郭波莉赵海燕张影全青岛农业大学食品科学与工程学院山东青岛266109 中国农业科学院农产品加工研究所/农业农村部粮油加工综合利用技术集成实验室北京100193 中国农业科学院西部农业研究中心新疆昌吉831100 西北农林科技大学农学院陕西杨凌712100

小麦高分子量麦谷蛋白亚基(HMW-GSs)是影响面条产品质量的关键蛋白组分,其中Glu-D1位点编码的HMW-GSs对面团及面制品的品质贡献效应最大。为明确Glu-D1位点不同HMW-GS对3类主要面条产品品质的影响规律,本研究以小偃22遗传背景下Glu-D1位... 详细信息

小麦高分子量麦谷蛋白亚基(HMW-GSs)是影响面条产品质量的关键蛋白组分,其中Glu-D1位点编码的HMW-GSs对面团及面制品的品质贡献效应最大。为明确Glu-D1位点不同HMW-GS对3类主要面条产品品质的影响规律,本研究以小偃22遗传背景下Glu-D1位点HMW-GSs分别为2+12、3+12、4+12和5+10的4个BC6F4代近等基因系为试验材料,系统研究比较了4种亚基对鲜湿面、挂面以及冷冻熟面品质的影响规律。结果表明,与其他亚基相比,含有3+12亚基的鲜湿面具有较好的烹调吸水率和较低的烹调损失率,同时硬度、弹性、回复性、咀嚼性等较好;含有3+12亚基的挂面最佳煮制时间短、烹调吸水率较高、烹调损失率较低,而含有2+12亚基的挂面硬度和咀嚼性适中、黏附性低、回复性较高;含有3+12和2+12亚基的冷冻熟面冻藏稳定性较好,含有3+12亚基的冷冻熟面硬度适中,咀嚼性较高,整体质构特性表现较好。本研究结果可为面条专用小麦品种选育、专用加工原粮选择、专用粉开发等提供参考。

关键词： HMW-GS Glu-D1位点鲜湿面挂面冷冻熟面

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Mission-oriented capability evaluation for combat network based on operation loops OA

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Defence Technology（防务技术） 2024年第12期42卷 156-175页

作者： Yang Wang Junyong Tao xiaoke zhang Guanghan Bai Yunan zhang Laboratory of Science and Technology on Integrated Logistics Support College of Intelligence Science and TechnologyNational University of Defense TechnologyChangsha 410073China National Key Laboratory for Complex Systems Simulation Beijing 100101China

With continuous growth in scale,topology complexity,mission phases,and mission diversity,challenges have been placed for efficient capability evaluation of modern combat *** at the problems of insufficient mission consideration and single evaluation dimension in the existing evaluation approaches,this study proposes a mission-oriented capability evaluation method for combat systems based on operation ***,a combat network model is given that takes into account the capability properties of combat ***,based on the transition matrix between combat nodes,an efficient algorithm for operation loop identification is proposed based on the Breadth-First *** the mission-capability satisfaction of nodes,the effectiveness evaluation indexes for operation loops and combat network are proposed,followed by node importance *** a case study of the combat scenario involving space-based support against surface ships under different strategies,the effectiveness of the proposed method is *** results indicated that the ROI-priority attack method has a notable impact on reducing the overall efficiency of the network,whereas the O-L betweenness-priority attack is more effective in obstructing the successful execution of enemy attack missions.

关键词： Combat network Operation loop identification Mission-oriented Network reliability Network effectiveness evaluation Strike strategies

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Molecular and atomic manipulation of metal-organic framework-derived LiCoMnO_(4):An oxygen-deficient strategy for advanced lithium storage

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Journal of Energy Chemistry 2022年第12期75卷 216-228,I0006页

作者： Jian-En Zhou Jiahao Chen xiaoke zhang Akif Zeb Xiaoming Lin Guangzhou Key Laboratory of Materials for Energy Conversion and Storage Key Laboratory of Theoretical Chemistry of EnvironmentMinistry of EducationSchool of ChemistrySouth China Normal UniversityGuangzhou 510006GuangdongChina

As a novel class of high-voltage cathode materials,spinel lithium transition metal oxides have been faced with demerits including pronounced structural instability caused by Jahn-Teller distortion(especially at the lower voltage region)and severe capacity degradation despite their intriguing electrochemical *** extend their functionalities as broad-voltage cathodes,the sacrificial template method has been regarded as a promising way to realize structural and compositional control for desirable electrochemical ***,we report a synthetic protocol to directionally prepare Li Co Mn O_(4)(LCMO)using carboxyl-based metal-organic frameworks(MOFs)as self-sacrificing ***,LCMO derived from Co Mn-BDC(H_(2)BDC=1,4-benzenedicarboxylate)displays superior electrochemical performances with a specific capacity of 151.6 m Ah g^(-1)at 1 C(150 m A g^(-1))after 120 cycles and excellent rate capacity of 91.9 m Ah g^(-1)at 10 C due to the morphology control,microstructural modulation,and atomic manipulation of the MOF *** by the optimized atomic and electronic structure,abundant oxygen vacancies,and the nanostructure retained from MOF precursors,LCMO materials display extraordinary electrochemical properties,which have been extensively verified by both experimental and theoretical *** work not only provides guidelines for the directional design of spinel materials at molecular and atomic levels but also sheds light on the practical use of LIBs with broad range voltage.

关键词： Lithium-ion battery Cathode MOFs LiCoMnO_(4) Controllable synthesis Atomic manipulation

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Characterization and distribution of novel alleles of the vernalization gene Vrn-A1 in Chinese wheat(Triticum aestivum L.) cultivars

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The Crop Journal 2023年第3期11卷 852-862页

作者： Bo zhang Yangyang Guo Qiru Fan Ruibo Li Dongsheng Chen xiaoke zhang College of Agronomy Northwest A&F UniversityYangling 712100ShaanxiChina The Crop Research Institute Ningxia Academy of Agriculture and Forestry ScienceYinchuan 750002NingxiaChina

The ability of wheat to adapt to a wide range of environmental conditions is determined mostly by allelic diversity among genes regulating vernalization ***-1 is a major regulator of this *** this study,two novel alleles of Vrn-A1 were discovered in Chinese cultivars:vrn-A1n was identified in two landraces,Jiunong 2 and Ganchun 16,and Vrn-A1o was detected in *** novel alleles showed a linked duplication in the promoter *** common copy of these two alleles was identical to the recessive allele *** with the recessive allele vrn-A1,the other copy of vrn-A1n contained a 54-bp deletion in the promoter region and the distinct copy of Vrn-A1o contained an11-bp deletion in the promoter *** segregating populations in the greenhouse under nonvernalizing(20–25°C)and long-day(16 h light)conditions,plants with the novel vrn-A1n allele did not head earlier than those with the recessive vrn-A1 ***,plants that were either homozygous or heterozygous for the novel Vrn-A1o allele headed earlier than those with the recessive vrn-A1 *** identify the novel allele with the small-sized product and facilitate screening,a DNA marker for the novel dominant allele Vrn-A1o was *** of the novel-allele distribution showed that two cultivars carrying the vrn-A1n allele were dispersed in the northwestern spring wheat zone,and 12 cultivars carrying the dominant Vrn-A1o allele were widely distributed in the northwestern spring wheat zone,Xinjiang winter and spring wheat zone,Yellow and Huai River valley winter wheat zone,and QinghaiTibetan Plateau spring and winter wheat *** study identifies useful germplasm and a DNA marker for wheat breeding.

关键词： Common wheat Vernalization genes Novel alleles DNA marker Heading time

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Vertical Distribution of Soil Nematode Communities under Different Tillage Systems in Lower Reaches of Liaohe River

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Chinese Geographical Science 2010年第2期20卷 106-111页

作者： HOU Xuekun HU Ning zhang xiaoke LIANG Lei ZHAI Ruichang Liaoning Key Laboratory of Soil Environmental Quality and Agro-product Safety Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 China College of Plant Sciences and Technology Heilongjiang August First Reclamation University Daqing 163319 China College of Resources and Environment Liaoning University Shenyang 110036 China

Vertical distribution of soil nematode communities under conventional tillage (CT),no-tillage (NT) and fallow field (FF) treatments in the Lower Reaches of the Liaohe River was investigated at six soil depths (0-5 cm,5-15 cm,15-30 cm,30-50 cm,50-75 cm and 75-100 cm). The results show that total nematode abundance gradually decreases with depth,and the highest number of total nematodes is observed at 0-5 cm depth under NT and FF treatments. The number of fungivores and plant parasites is significantly higher under FF and NT treatments than under CT treatment at the 0-5 cm depth. There is significant soil depth effect on the abundances of bacterivores and omnivores-predators,which exhibits a similar trend to that of total nematodes; whereas,no significant tillage effect is found. Tillage effect on soil nematode communities can be reflected by values of relative tillage response of index V. Results of index V indicate that total nematodes,bacterivores,fungivores and plant parasites are mildly inhibited,and omnivores-predators is moderately inhibited under CT treatment; while,under FF treatment total nematodes is mildly,and fungivores and plant parasites are moderately stimulated,respectively.

关键词： soil nematode tillage system vertical distribution tillage response

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Effect of land use on soil nematode community composition and co-occurrence network relationship

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Journal of Integrative Agriculture 2024年第8期23卷 2807-2819页

作者： Xiaotong Liu Siwei Liang Yijia Tian Xiao Wang Wenju Liang xiaoke zhang Institute of Applied Ecology Chinese Academy of SciencesShenyang 110016China Tillage and Cultivation Research Institute Liaoning Academy of Agricultural SciencesShenyang 110161China University of Chinese Academy of Sciences Beijing 100049China Key Lab of Conservation Tillage and Ecological Agriculture in Liaoning Province Shenyang 110016China

Land use influences soil biota community composition and diversity,and then belowground ecosystem processes and *** characterize the effect of land use on soil biota,soil nematode communities in crop land,forest land and fallow land were investigated in six regions of northern *** richness,diversity,abundance and biomass of soil nematodes was the lowest in crop *** richness and diversity of soil nematodes were 28.8and 15.1%higher in fallow land than in crop land,*** significant differences in soil nematode indices were found between forest land and fallow land,but their network keystone genera composition was *** the keystone genera,50%of forest land genera were omnivores-predators and 36%of fallow land genera were *** proportion of fungivores in forest land was 20.8%lower than in fallow *** network complexity and the stability were lower in crop land than forest land and fallow *** pH,NH_(4)^(+)-N and NO_(3)^(–)-N were the major factors influencing the soil nematode community in crop land while soil organic carbon and moisture were the major factors in forest *** nematode communities in crop land influenced by artificial management practices were more dependent on the soil environment than communities in forest land and fallow *** use induced soil environment variation and altered network relationships by influencing trophic group proportions among keystone nematode genera.

关键词： soil nematode trophic groups community composition co-occurrence network land use

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Entrapping multifunctional dendritic nanoparticles into a hydrogel for local therapeutic delivery and synergetic immunochemotherapy

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Nano Research 2018年第11期11卷 6062-6073页

作者： Lei Jiang Yang Ding Xialin Xue Sensen Zhou Cheng Li xiaoke zhang Xiqun Jiang State Key Laboratory of Natural Medicines Department of Pharmaceutics China Pharmaceutical University Nanjing 210009 China MOE Key Laboratory of High Performance Polymer Materials and Technology and Department of Polymer Science & EngineeringCollege of Chemistry & Chemical Engineering Nanjing University Nanjing 210093 China

Developing multifunctional nanoparticles to support new therapy models is a promising and challenging task to address the current dilemma on antitumor treatment. Herein, we incorporated multifunctional dendritic nanoparticles into a poly(D,L-lactide-co-glycolide)-poly(ethylene glycol)-poly(D,L-lactide-co-glycolide) (PLGA-PEG-PLGA) triblock copolymers thermosensitive injectable hydrogel matrix to construct a localized drug delivery system for combining chemotherapy and immunotherapy. The multifunctional dendritic nanoparticles were designed with following expectations: i, Dendritic scaffolds provide a hydrophobic interior to load the anticancer drug, doxorubicin (DOX), for chemotherapy; and ii, dendritic scaffolds are used to build arginine-rich molecules to provide the inducible nitric oxide synthase (iNOS) substrate, L-Arg, to M1 macrophages, which can produce the cytotoxic substance nitric oxide (NO) and subsequently induce tumor cell destruction through immunotherapy. It is noteworthy that the dendritic nanoparticles-in-hydrogel delivery system is able to gel at physiological temperature and serves as a warehouse for the sustained release of the drug. Ultimately, this system showed great efficacy in treating 4T1 cells-xenografted BALB/C mice (86.62% tumor growth inhibition). Therefore, this localized drug delivery system combining chemotherapy and immunotherapy provides a novel approach for cancer therapy.

关键词： multifunctional dendritic nanoparticles peptide dendrimer cancer therapy combined chemotherapy and immunotherapy

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Effects of heavy metal pollution of highway origin on soil nematode guilds in North Shenyang, China

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Journal of Environmental Sciences 2009年第2期21卷 193-198页

作者： HAN Dechang zhang xiaoke TOMAR Vijay Vikram Singh LI Qi WEN Dazhong LIANG Wenju Key Laboratory of Terrestrial Ecological Process Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 China Biodiversity Research Laboratory Aligarh Muslim University Aligarh 202002 India Graduate University of the Chinese Academy of Sciences Beijing 100049 China

Soil samples were collected with distance at 5, 20, 40, 80, 160, and 320 m from the Shen-Ha （Shenyang-Harbin） Highway, Northeast China, to investigate the effect of heavy metals of highway origin on soil nematode guilds. The contents of soil Pb, Cu, Zn, and the nematode community structure were analyzed. The results showed that the contents of total and available Pb, Ca, Zn varied significantly with the different distances from the highway. Pb was the main pollutant in the soils in the vicinity of Shen-Ha Highway. The zone from 20 to 40 m away from the highway was the most polluted area. The highest abundance of soil nematodes was found at 5 m while the lowest at 20 m away from the highway. Thirty six genera of nematodes belonging to 23 families were identified. Nematode guilds having different responses to soil heavy metals were classified into four types. Soil nematode guilds may act as a prominent indicator to heavy metal pollution of highway origin.

关键词： soil pollution of highway origin heavy metals soil nematode guilds

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Generating ^(1)O_(2) and Co^(IV)=O through efficient peroxymonosulfate activation by ZnCo_(2)O_(4)nanosheets for pollutant control

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Nano Research 2024年第9期17卷 8025-8035页

作者： xiaoke zhang Yangyang zhang Jiaqi Tian Yadan Guo Zhongkui Zhou Zhongyi Liu Zaiwang Zhao Bin Liu Jun Li College of Chemistry Henan Institute of Advanced TechnologyZhengzhou UniversityZhengzhou 450052China State Key Laboratory of Coking Coal Resources Green Exploitation Zhengzhou UniversityZhengzhou 450001China School of Water Resources and Environmental Engineering East China University of TechnologyNanchang 330013China Department of Materials Science and Engineering City University of Hong KongHong Kong 999077China College of Energy Materials and Chemistry College of Chemistry and Chemical EngineeringInnerMongolia UniversityHohhot 010070China

Heterogeneous advanced oxidation processes(AOPs)based on non-radical reactive species are considered as a powerful technology for wastewater purification due to their long half-lives and high adaptation in a wide pH ***,we fabricate surface Co defect-rich spinel ZnCo_(2)O_(4)porous nanosheets,which can generate≡CoIV=O and ^(1)O_(2) over a wide pH range of 3.81-10.96 by the formation of amphoteric≡Zn(OH)2 in peroxymonosulfate(PMS)activation *** functional theory(DFT)calculations show Co defect-rich ZnCo_(2)O_(4)possesses much stronger adsorption ability and more electron transfer to ***,the adsorption mode changes from terminal oxygen Co-O-Co to Co-O,accelerating the polarization of adjacent oxygen,which is beneficial to the generation of≡CoIV=O and Generating ^(1)O_(2) .Co defect-rich ZnCo_(2)O_(4)porous nanosheets exhibit highly active PMS activation activity and stability in p-nitrophenol(PNP)degradation,whose toxicity of degradation intermediates is significant *** Co defect-rich ZnCo_(2)O_(4)nanosheet catalyst sponge/PMS system achieved stable and efficient removal of PNP with a removal efficiency higher than 93%over 10 *** work highlights the development of functional catalyst and provides an atomic-level understanding into non-radical PMS activation process in wastewater treatment.

关键词： advanced oxidation processes ZnCo_(2)O_(4)nanosheets peroxymonosulfate activation CoIV=O,wastewater treatment

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