检索结果-南通市图书馆

Integrative Zoology 2012年第1期7卷 1-15页

作者： junbo luan Shusheng LIU Ministry of Agriculture Key Laboratory of Agricultural Entomology Institute of Insect SciencesZhejiang UniversityHangzhouChina

The invasive B whitefly and the indigenous ZHJ2 whitefly in China of the Bemisia tabaci complex represent two previously allopatric cryptic *** experiments have shown that the invasive B can displace the indigenous ***,we observed the mating behavior and mating interactions between B and ZHJ2 to elucidate the behavioral mechanisms underlying their *** 2 species are able to mate with each oth-er,although at a significantly lower frequency than that between males and females within the same ***-mated females produce only male progeny,indicating reproductive *** mating had only a marginal effect on reproduction of females in either *** observations on mating interactions between the 2 species showed that B had higher sexual activity than ZHJ2.B males were more like-ly to interrupt courtships initiated by rival males than ZHJ2 *** with ZHJ2 males,B males were also more likely to successfully interrupt courtships initiated by rival heterospecific males than by males of the same *** addition,B males guarded B females post-copulation,whereas ZHJ2 males did *** the 2 species co-occurred,the behavioral differences and interactions between them resulted in an increased propor-tion of females produced in the offspring of B but reduced proportion of females in the progeny of *** asymmetric mating interactions might be an important mechanism underlying the displacement of ZHJ2 by *** study shows that reproductive interference might contribute to the competitive exclusion between closely related species during biological invasions.

关键词： Bemisia tabaci biological invasion courtship displacement mating interactions

New insights into the transovarial transmission of the symbiont Rickettsia in whiteflies

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

Science China(Life Sciences) 2021年第7期64卷 1174-1186页

作者： Hongwei Shan Yinquan Liu junbo luan Shusheng Liu Ministry ofAgriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects Institute ofInsect SciencesZhejiang UniversityHangzhou 310058China College of Plant Protection Shenyang Agricultural UniversityShenyang 110866China

Endosymbiont transmission via eggs to future host generations has been recognized as the main strategy for its persistence in insect hosts;however,the mechanisms for transmission have yet to be ***,we describe the dynamic locations of Rickettsia in the ovarioles and eggs during oogenesis and embryogenesis in a globally significant pest whitefly Bemisia *** populations of the whitefly have a high prevalence of Rickettsia,and in all Rickettsia-infected individuals,the bacterium distributes in the body cavity of the host,especially in the midgut,fat body,hemocytes,hemolymph,and near *** distribution of Rickettsia was subjected to dynamic changes in the ovary during oogenesis,and our ultrastructural observations indicated that the bacteria infect host ovarioles during early developmental stages via two routes:(i)invasion of the tropharium by endocytosis and then transmission into vitellarium via nutritive cord and(ii)entry into vitellarium by hijacking bacteriocyte *** of the Rickettsia are degraded in the oocyte cytoplasm in late-stage ***,a few reside beneath the vitelline envelope of mature eggs,spread into the embryo,and proliferate during embryogenesis to sustain high-fidelity transmission to the next *** findings provide novel insights into the maternal transmission underpinning the persistence and spread of insect symbionts.

关键词： Bemisia tabaci Rickettsia symbiosis vertical transmission

在线全文

学校读者我要写书评

暂无评论

媒介昆虫-病毒-植物互作对生物入侵的影响

生物多样性 2010年第6期18卷 598-604页

作者：栾军波刘树生浙江大学昆虫科学研究所农业部作物病虫分子生物学重点开放实验室杭州310029

媒介昆虫-病毒-植物互作关系复杂多样。虽然相关的研究较多,然而有关三者互作对于生物入侵的影响还知之甚少。已有证据表明,寄主植物对病毒的敏感性和对媒介昆虫的适合性、媒介昆虫对寄主的适应能力等因素影响三者互作关系。当寄主植物... 详细信息

媒介昆虫-病毒-植物互作关系复杂多样。虽然相关的研究较多,然而有关三者互作对于生物入侵的影响还知之甚少。已有证据表明,寄主植物对病毒的敏感性和对媒介昆虫的适合性、媒介昆虫对寄主的适应能力等因素影响三者互作关系。当寄主植物易感病并且对媒介昆虫的适合性低,而媒介昆虫对寄主植物的适应能力强时,媒介昆虫与植物病毒之间很可能建立间接互惠关系,这种互惠可促进媒介昆虫入侵和病毒病流行。此外,媒介昆虫与植物病毒之间中性或偏害的互作关系对于外来生物入侵的促进作用也不容忽视。鉴于三者互作对于生物入侵的重要性,今后需要对不同物种所组成的多种组合进行比较研究,并采用多种方法揭示互作的生理和分子机制。

关键词：媒介昆虫植物病毒植物间接互惠生物入侵

在线全文

学校读者我要写书评

暂无评论

从社会保障角度看青少年宫的功能定位

中国青年研究 2010年第12期 46-49页

作者：李文革栾军波华中科技大学社会学系中国少先队事业发展中心中国少先队事业发展中心新媒体中心

随着我国社会化保障体系的不断完善,青少年宫作为社会公共文化体系和社会服务体系的组成部分,其社会保障功能应当进一步体现,需要我们从新的视角对青少年宫的功能定位进行理解。本文尝试从社会保障的概念与原则、现代社会保障的理念与... 详细信息

随着我国社会化保障体系的不断完善,青少年宫作为社会公共文化体系和社会服务体系的组成部分,其社会保障功能应当进一步体现,需要我们从新的视角对青少年宫的功能定位进行理解。本文尝试从社会保障的概念与原则、现代社会保障的理念与内容出发,结合我国青少年宫的发展历史和主要属性,对其功能定位的社会保障意义作一些初步探索。

关键词：社会保障青少年宫社会教育

Interaction of major facilitator superfamily domain containing 2A with the blood-brain barrier

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第8期20卷 2133-2152页

作者： Yilun Ma Taiwei Dong Fei luan Juanjuan Yang Feng Miao Peifeng Wei College of Pharmacy and First Clinical Medical College Shaanxi University of Chinese MedicineXianyangShaanxi ProvinceChina National Drug Clinical Trial Agency The Second Affiliated Hospital of Shaanxi University of Chinese Medicine/Xixian New District Central HospitalXi′anShaanxi ProvinceChina

The functional and structural integrity of the blood-brain barrier is crucial in maintaining homeostasis in the brain microenvironment;however,the molecular mechanisms underlying the formation and function of the blood-brain barrier remain poorly *** major facilitator superfamily domain containing 2A has been identified as a key regulator of blood-brain barrier *** plays a critical role in promoting and maintaining the formation and functional stability of the blood-brain barrier,in addition to the transport of lipids,such as docosahexaenoic acid,across the blood-brain ***,an increasing number of studies have suggested that major facilitator superfamily domain containing 2A is involved in the molecular mechanisms of blood-brain barrier dysfunction in a variety of neurological diseases;however,little is known regarding the mechanisms by which major facilitator superfamily domain containing 2A affects the blood-brain *** paper provides a comprehensive and systematic review of the close relationship between major facilitator superfamily domain containing 2A proteins and the blood-brain barrier,including their basic structures and functions,cross-linking between major facilitator superfamily domain containing 2A and the blood-brain barrier,and the in-depth studies on lipid transport and the regulation of blood-brain barrier *** comprehensive systematic review contributes to an in-depth understanding of the important role of major facilitator superfamily domain containing 2A proteins in maintaining the structure and function of the blood-brain barrier and the research progress to *** will not only help to elucidate the pathogenesis of neurological diseases,improve the accuracy of laboratory diagnosis,and optimize clinical treatment strategies,but it may also play an important role in prognostic *** addition,the effects of major facilitator superfamily domain containing 2A on blood-brain barrier lea

关键词： blood-brain barrier(BBB) caveolin-1 central nervous system docosahexaenoic acid endothelial cells lysophosphatidylcholine major facilitator superfamily domain containing 2A(MFSD2A) transcytosis

在线全文

学校读者我要写书评

暂无评论

辣椒碱与3种药剂对温室白粉虱的联合毒力

植物保护 2021年第4期47卷 305-309页

作者：刘国强白冰毕于慧栾军波于志国沈阳农业大学植物保护学院沈阳110866

为了筛选出对温室白粉虱Trialeurodes vaporariorum具有增效作用的农药复配组合,室内采用玻璃管饲喂法测定了辣椒碱与吡虫啉、溴氰虫酰胺、苦参碱复配对温室白粉虱初羽化成虫的联合毒力,并以共毒因子法与共毒系数法对各复配组合的联合... 详细信息

为了筛选出对温室白粉虱Trialeurodes vaporariorum具有增效作用的农药复配组合,室内采用玻璃管饲喂法测定了辣椒碱与吡虫啉、溴氰虫酰胺、苦参碱复配对温室白粉虱初羽化成虫的联合毒力,并以共毒因子法与共毒系数法对各复配组合的联合毒力进行评价。试验结果表明,共毒因子大于20的配比共6组,进一步细化配比后筛选出共毒系数大于120的复配组合,其中14组具有增效作用,辣椒碱分别与吡虫啉、溴氰虫酰胺、苦参碱按287∶1、1558∶1、423∶1复配时增效作用最显著,其共毒系数分别为257.89、255.65、248.80,LC_(50)分别为31.83、128.07、98.87 mg/L。辣椒碱与吡虫啉按287∶1复配为最佳复配组合。

关键词：温室白粉虱联合毒力共毒因子共毒系数

Postnatal development of rat retina:a continuous observation and comparison between the organotypic retinal explant model and in vivo development

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第3期20卷 900-912页

作者： Baoqi Hu Rui Wang Hanyue Zhang Xiou Wang Sijia Zhou Bo Ma Yan luan Xin Wang Xinlin Chen Zhichao Zhang Qianyan Kang Department of Ophthalmology The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’anShaanxi ProvinceChina Department of Ophthalmology The First Affiliated Hospital of Northwest UniversityXi’anShaanxi ProvinceChina Institute of Neurobiology Xi’an Jiaotong University Health Science CenterXi’anShaanxi ProvinceChina

The organotypic retinal explant culture has been established for more than a decade and offers a range of unique advantages compared with in vivo experiments and cell ***,the lack of systematic and continuous comparison between in vivo retinal development and the organotypic retinal explant culture makes this model controversial in postnatal retinal development ***,we aimed to verify the feasibility of using this model for postnatal retinal development studies by comparing it with the in vivo *** this study,we showed that postnatal retinal explants undergo normal development,and exhibit a consistent structure and timeline with retinas in ***,we used SOX2 and PAX6 immunostaining to identify retinal progenitor *** then examined cell proliferation and migration by immunostaining with Ki-67 and doublecortin,***-67-and doublecortin-positive cells decreased in both in vivo and explants during postnatal retinogenesis,and exhibited a high degree of similarity in abundance and distribution between ***,we used Ceh-10 homeodomain-containing homolog,glutamate-ammonia ligase(glutamine synthetase),neuronal nuclei,and ionized calcium-binding adapter molecule 1 immunostaining to examine the emergence of bipolar cells,Müller glia,mature neurons,and microglia,*** timing and spatial patterns of the emergence of these cell types were remarkably consistent between in vivo and explant *** study showed that the organotypic retinal explant culture model had a high degree of consistency with the progression of in vivo early postnatal retina *** findings confirm the accuracy and credibility of this model and support its use for long-term,systematic,and continuous observation.

关键词： bipolar cells differentiation in vivo microglia Müller glia organotypic retinal explant culture postnatal retina development proliferation retinal progenitor cells

Encapsulating perovskite quantum dots into 3D COF for visible light-driven CO2 reduction

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年

作者： Xinxin Wang Yucheng Jin Xiya Yang Qingyu luan Tianyu Wang Dongdong Qi Kang Wang Jianzhuang Jiang College of Chemistry and Materials Science Anhui Normal University Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials Department of Chemistry and Chemical Engineering School of Chemistry and Biological EngineeringUniversity of Science and Technology Beijing

Lead halide perovskite quantum dots（LHP QDs） have been revealed to possess great potential in photocatalytic applications including CO2reduction, which however suffer from poor stability. Herein, a high crystalline hydrazine-linked three-dimensional（3D） covalent organic framework, USTB-17, was fabricated from the reaction between 12-connected building block and 4-connected 3,5,7-tetrakis（4-aldophenyl）-adamantane. Post-modification with Ni2+affords the metallic framework USTB-17（Ni）followed by sequential deposition of the CH3NH2PbI3（MAPbI3） perovskite QDs into its pores, generating the USTB-17（Ni）@MAPbI3composite. Powder X-ray diffraction analysis together with theoretical simulations and transmission electron microscopy discloses the crystalline nature of USTB-17, USTB-17（Ni）, and USTB-17（Ni）@MAPbI3with an unprecedented noninterpenetrated hpt topology. The close contact of QDs inside the COF pores with the Ni catalytic site locating at the pore surface of COF allows a rapid transfer of the photogenerated electrons in QDs to the Ni catalytic sites, enhancing the photocatalytic activity for CO2reduction. This endows USTB-17（Ni）@MAPbI3with efficient photocatalysis performance for photocatalytic CO2reduction with CO generation rate of 365 μmol g-1h-1and CO selectivity up to 96% under visible-light irradiation, 7 times higher than that of USTB-17（Ni）. After four cycles of reactions, the photocatalytic CO generation rate remains almost unchanged, demonstrating its excellent cycle stability.

关键词：

中国农业害虫综合防治研究进展:2018年-2022年

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

植物保护 2023年第5期49卷 145-166页

作者：陆宴辉刘杨杨现明荆玉谱胡高栾军波郭兆将马罡闫硕梁沛刘杰肖海军中国农业科学院植物保护研究所植物病虫害综合治理全国重点实验室北京100193 河南大学生命科学学院棉花生物育种与综合利用全国重点实验室开封475004 南京农业大学植物保护学院南京210095 沈阳农业大学植物保护学院沈阳110866 中国农业科学院蔬菜花卉研究所蔬菜生物育种全国重点实验室北京100081 中国农业大学植物保护学院北京100193 全国农业技术推广服务中心北京100125 北京林业大学植物草业与草原学院北京100083

近5年来,我国在害虫变态发育与生殖调控、害虫滞育调控、害虫迁飞、害虫与共生微生物互作、害虫对杀虫剂的抗性、害虫与寄主植物的化学通讯、害虫对植物抗虫性的适应、害虫对作物种植结构调整的响应、害虫对全球气候变化的响应等农业害... 详细信息

近5年来,我国在害虫变态发育与生殖调控、害虫滞育调控、害虫迁飞、害虫与共生微生物互作、害虫对杀虫剂的抗性、害虫与寄主植物的化学通讯、害虫对植物抗虫性的适应、害虫对作物种植结构调整的响应、害虫对全球气候变化的响应等农业害虫发生新规律新机制解析方面取得了系列重要进展,同时推进了抗虫作物、RNA农药、行为调控和生态调控等害虫防控新技术与新产品的研发;提出迁飞性草地贪夜蛾分区治理、多食性盲蝽区域防控、地下害虫韭蛆绿色防控和抗性麦蚜精准化学防控等害虫绿色防控新模式新体系。根据国内外农业害虫综合防治科技发展趋势和中国农业高质量发展现实需求,我国需进一步重视农业昆虫交叉学科前沿和新兴技术领域,以产业需求为导向,强化害虫防控基础理论创新,创制智能监测预警和绿色防控新技术、新产品,创新集成区域绿色防控和跨区协同治理技术体系,为保障国家粮食安全、助力乡村全面振兴提供强有力的植保科技支撑。

关键词：农业害虫灾变规律监测预警综合防治绿色防控

基于PLUS模型的典型农牧交错带土地利用驱动力分析与多情景模拟

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

水土保持研究 2025年第1期32卷 368-378页

作者：张启扬刘仁志栾朝旭北京师范大学环境学院水环境模拟国家重点实验室北京100875

[目的]实现农牧交错带地区破碎化土地利用变化的精准预测,为农牧交错带土地利用预测与结构调整提供重要工具。[方法]研究针对性构建了农牧交错带土地利用模拟方法(APE-PLUS),引入土地扩张分析策略(LEAS)、基于多类型随机斑块种子的CA模... 详细信息

[目的]实现农牧交错带地区破碎化土地利用变化的精准预测,为农牧交错带土地利用预测与结构调整提供重要工具。[方法]研究针对性构建了农牧交错带土地利用模拟方法(APE-PLUS),引入土地扩张分析策略(LEAS)、基于多类型随机斑块种子的CA模型(CARS)、Markov模型和土地利用情景设计,解决农牧交错带土地利用模拟中斑块零散、景观破碎、变化机制复杂的问题。采用二调、三调土地利用数据,分析了2014-2020年土地利用变化及其驱动力,模拟了2032年科左后旗自然增长、生态优先、耕地保护和可持续发展情景下的土地利用格局。[结果](1)农牧交错带土地利用模拟方法(APE-PLUS)精度较高,Kappa系数为0.87,总体精度达到0.92;(2)科左后旗2014-2020年土地利用变化显著,全旗47.85%的土地类型发生改变,14.65%的土地由耕地转变为草地,DEM和水资源是这一时期土地利用变化的主要驱动力;(3)2032年多情景预测中,可持续发展情景耕地面积增长1.31%,林地和草地分别减少了0.77%和1.72%,其他用地面积减小28.4%,相比于其他3种情景,土地利用数量结构与空间格局更合理。此情景有助于减缓耕地扩张趋势和草地缩减趋势,有效控制水土流失、土壤沙化问题,提高生态保护与经济发展的协调程度。[结论]农牧交错带土地利用模拟方法(APE-PLUS)对科左后旗的土地利用具有较高的模拟精度,可以对农牧交错带斑块级的土地利用变化进行高精度的预测。

关键词：土地利用变化农牧交错带 PLUS模型科尔沁左翼后旗驱动因子