检索结果-南通市图书馆

High-Resolution Imaging of Latent Fingerprints through Near-Infrared Organoboron AIEgens

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2023年第12期41卷 1465-1470页

作者： Lijie Liu Jinjin Wang Xingxiao Wang Haoran Wang Mengzhen Li Tongyuan Wu Guangqin gao Xin Zheng Guoxing Liu Liangxin Fan Wenbo Shen Guangxin Ru Zheng Zhao Ben Zhong tang College of Science Henan Agricultural University 63 Agricultural Road Zhengzhou Henan 450002 China School of Science and Engineering Shenzhen Institute of Aggregate Science and Technology The Chinese University of Hong Kong Shenzhen Guangdong 518172 China

A new class of near-infrared(NIR)fluorescent organoboron AIEgens was successfully developed for latent fingerprints(LFPs)*** exhibit real-time and in situ high-resolution imaging performance at 1-3 levels of LFPs by spraying *** addition,we systematically elucidate the fingerprint imaging mechanism of these ***,the excellent level 3 structural imaging capabilities enable the application of them for analyzing incomplete LFPs and identifying individuals in different scenarios.

关键词： Organoboron AIEgens Aggregation-induced emission Near-infrared emission High-resolution imaging of latent fingerprints

基于VOSviewer和CiteSpace的中药卷柏研究动态及前沿可视化分析

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国药物评价 2024年第4期41卷 265-274页

作者：钟文婷曹长鸿高枫吴孟华马志国曹晖张英暨南大学岭南传统中药研究中心国家中药现代化工程技术研究中心岭南资源分中心广东广州510632 曹晖全国名老中医药专家传承工作室广东广州510632 广东省中医药信息化重点实验室广东广州510632

目的:分析中药卷柏(Selaginella Herba)的国内外研究现状和发展趋势。方法:采用检索词“卷柏”和“垫状卷柏”“Selaginella Herba”“Selaginella tamariscina”和“Selaginella pulvinata”在中国知网(CNKI)和Web of Science(WOS)数据库核心集进行文献检索。基于VOSviewer和CiteSpace软件,对卷柏中英文文献的发文量、作者、发文机构、发文被引频次等进行分析。结果:纳入260篇文献,包括70篇中文文献和190篇英文文献。截至2023年12月29日,在CNKI数据库中卷柏的发文量高峰集中在2006—2011年,而在WOS数据库的高峰期集中在2017—2021年,主要的文献来源涵盖了14个国家,其中以中国、韩国等为多。此外,在中文文献研究方向从成分初步研究和实验设计阶段,逐渐演变为代谢组学等方面的深入研究,而英文文献的研究方向则从其成分的生物活性逐渐转向对药理作用和分子作用机制。结论:将中、英文文献知识图谱可视化分析可更全面地了解卷柏热点研究进展,且其现有研究正由单一学科向多学科融合的方向发展。未来,可着重关注卷柏成分鉴定与结构优化、药理学应用、代谢组学和多学科交叉研究等方面的研究,为其进一步开发与应用提供理论基础。

关键词：卷柏 Selaginella Herba VOSviewer CiteSpace 可视化分析

Perennial aneuploidy as a potential material for gene introgression between maize and Zea perennis

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2015年第5期14卷 839-846页

作者： FU Jie YANG Xiu-yan CHENG Ming-jun L Gui-hua WANG Pei WU Yuan-qi ZHENG Ming-min ZHOU Shu-feng RONG Ting-zhao tang Qi-lin Maize Research Institute Sichuan Agricultural University

Hybridization,which allows for gene flow between crops,is difficult between maize and Zea *** this study,we aim to initiate and study gene flow between maize and *** via a special aneuploid plant（MDT） derived from an interspecific hybrid of the two *** chromosome constitution and morphological characters of MDT as well as certain backcross progenies were *** from genomic in situ hybridization（GISH） indicate that aneuploid MDT consisted of nine maize chromosomes and 30 *** *** backcross progenies of MDTxmaize displayed significant diversity of vegetative and ear morphology;several unusual plants with specific chromosome constitution were founded in its *** special perennial progeny with several maize chromosomes were obtained by backcrossing MDT with ***,and the first whole chromosome introgression from maize to *** was detected in this *** this novel material and method,a number of maize-tetraploid teosinte addition or substitution lines can be generated for further study,which has great significance to maize and *** genetic research,especially for promoting introgression and transferring desirable traits.

关键词： chromosomes maize fertility pollen parental vegetative displayed tetraploid constitution sterility

在线全文

学校读者我要写书评

暂无评论

非寄主植物精油对桔小实蝇的驱避效果研究

环境昆虫学报 2024年第05期46卷 1213-1223页

作者：杨洁尹伊秀娟王丽娟李国平李裕展徐建欣高冠群詹儒林王姝逸中国热带农业科学院湛江实验站天津市农业科学院信息研究所云南农业大学热带作物学院天津农学院园艺园林学院中国热带农业科学院南亚热带作物研究所中国热带农业科学院三亚研究院天津市农业发展服务中心

桔小实蝇Bactrocera dorsalis Hendel幼虫期隐蔽性的取食习性降低了化学防治的效果，而普遍存在的杀虫剂耐药性则加剧了这一问题。利用非寄主植物挥发物驱避害虫是替代化学防治、有效控制虫害的策略之一。为了筛选更有效的植物源产卵驱... 详细信息

桔小实蝇Bactrocera dorsalis Hendel幼虫期隐蔽性的取食习性降低了化学防治的效果，而普遍存在的杀虫剂耐药性则加剧了这一问题。利用非寄主植物挥发物驱避害虫是替代化学防治、有效控制虫害的策略之一。为了筛选更有效的植物源产卵驱避剂，本研究选取23种非寄主植物精油作为候选材料，进行4轮试验，首先采用行为趋向反应试验，筛选出8种驱避率较高且选择反应率和驱避反应率差异极显著（P<0.01）的非寄主植物精油：绿花白千层、山鸡椒、广藿香、当归、茶树、茴香、薄荷、艾草；然后通过产卵驱避活性试验，筛选出4种驱避率高且处理组与对照组的产卵量差异极显著（P<0.01）的植物精油：绿花白千层、广藿香、当归、茶树。浓度梯度试验表明，浓度为5 000μg/mL时，绿花白千层、广藿香、当归驱避率最高，浓度为3 000μg/mL时，茶树精油驱避率最高；在最佳浓度下对桔小实蝇产卵驱避持效性分析，结果表明最佳浓度下4种精油处理过的果实，随着时间延长，桔小实蝇产卵孔和产卵量逐渐增加，驱避率逐渐降低，驱避产卵活性逐渐消失，前3 d降速较快，然后逐渐放缓。本研究通过行为趋向反应试验、产卵驱避活性试验、浓度梯度试验和驱避活性持效试验，从23种非寄主植物精油中，筛选到绿花白千层精油对桔小实蝇有较高的产卵驱避活性，通过剂型改良等措施有望开发成植物源驱避剂。

关键词：桔小实蝇精油非寄主植物产卵驱避驱避持效期

Emerging Variants of B.1.617 Lineage Identified Among Returning Chinese Employees Working in India—Chongqing Municipality,China,April 2021

在线全文

学校读者我要写书评

暂无评论

China CDC weekly 2021年第19期3卷 409-410页

作者： Sheng Ye Yongjun Zhang Xiang Zhao Zhen Yu Yang Song Zhangping Tan Yun tang Shuang Chen Mingyue Wang hua Ling Chongqing Center for Disease Control and Prevention ChongqingChina Chongqing Medical and Pharmaceutical College ChongqingChina National Institute for Viral Disease Control and Prevention China CDCBeijingChina.

On April 22 and 23,2021,3 confirmed COVID-19 cases in passengers on an arriving airplane from Nepal were reported by Chongqing Public Health Medical *** epidemiological investigation revealed these 3 patients,males aged 20-30 years,were coworkers of a cellphone company that has a manufacturing base in Noida,India,where they worked with their Indian colleagues since late 2019.

关键词： Chongqing India fir

Overview of bile acid signaling in the cardiovascular system

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2021年第2期9卷 308-320页

作者： Rou Zhang Wen-Qi Ma Meng-Jun Fu Juan Li Chun-hua Hu Yi Chen Mi-Mi Zhou Zhi-Jie gao Ying-Li He Department of Infectious Diseases The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shaanxi ProvinceChina

Bile acids(BAs)are classically known to play a vital role in the metabolism of lipids and in *** is now well established that BAs act as signaling molecules,activating different receptors(such as farnesoid X receptor,vitamin D receptor,Takeda G-protein-coupled receptor 5,sphingosine-1-phosphate,muscarinic receptors,and big potassium channels)and participating in the regulation of energy homeostasis and lipid and glucose *** addition,increased BAs can impair cardiovascular function in liver *** 50%of patients with cirrhosis develop cirrhotic *** to high concentrations of hydrophobic BAs has been shown to be related to adverse effects with respect to vascular tension,endothelial function,arrhythmias,coronary atherosclerotic heart disease,and heart *** BAs in the serum BA pool have relevant through their hydrophobicity,and the lipophilic BAs are more harmful to the ***,ursodeoxycholic acid is a hydrophilic BA,and it is used as a therapeutic drug to reverse and protect the harmful cardiac effects caused by hydrophobic elevated *** order to elucidate the mechanism of BAs and cardiovascular function,abundant experiments have been conducted in vitro and in *** aim of this review was to explore the mechanism of BAs in the cardiovascular system.

关键词： Bile acids Cardiovascular Arteries Receptors Signaling Cirrhosis

基于SPAD值的不同海拔烤烟采收成熟度研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

安徽农业科学 2024年第10期52卷 30-33,38页

作者：汪薇王振华唐经祥徐经年任四海郭飞汪升友朱俊俊湖南省烟草公司张家界市公司湖南张家界427000 安徽省农业科学院安徽合肥230001

为探索不同海拔下烟叶成熟度采收标准及采收时间,以张家界市主栽品种K326为研究对象,使用SPAD-502叶绿素仪测定了400和600 m海拔区域下上、中、下各部位不同成熟度鲜烟叶的SPAD值,分析不同成熟度下烟叶外观质量、感官质量及经济性状,找... 详细信息

为探索不同海拔下烟叶成熟度采收标准及采收时间,以张家界市主栽品种K326为研究对象,使用SPAD-502叶绿素仪测定了400和600 m海拔区域下上、中、下各部位不同成熟度鲜烟叶的SPAD值,分析不同成熟度下烟叶外观质量、感官质量及经济性状,找出不同海拔下各部位烟叶适宜采收的SPAD值。结果表明:400 m海拔下部烟叶适宜采收的SPAD值为26.57~29.99,中部鲜烟叶SPAD值为15.48~23.08,上部鲜烟叶SPAD值为17.19~20.81;600 m海拔下部烟叶适宜采收的SPAD值为21.60~24.06,中部鲜烟叶SPAD值为19.82~24.40,上部鲜烟叶SPAD值为13.49~16.65,烤后烟叶外观质量表现较优,感官质量属于较高档次。

关键词：烟草海拔 SPAD值成熟度烟叶质量

Mechanical Analysis of Interface in Coating Structure under Conical Concave Indenter with FEM

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 Applied Mathematics and Physics 2022年第5期10卷 1509-1524页

作者： Shi-Qing huang Pan-Jun tang Wen-hua Zhang MOE Key Lab of Disaster Forecast and Control in Engineering Jinan University Guangzhou China School of Mechanics and Construction Engineering Jinan University Guangzhou China

The evaluation of mechanical properties of coating structures has always been a very important topic in the fields of mechanics, materials, and machinery. The traditional evaluation methods are easy to produce deviation, because the ratio of coating thickness to substrate thickness is too small. Therefore, accurate analysis and calculation is particularly important. Indentation technology is an important means of coating structure analysis and measurement, the basis of standardized application and analysis of coating structure, and a classical method for accurate analysis and calculation of coating structure. The finite element method is a very good means to analyze and study this kind of problems because of its applicability. Based on the finite element method, this paper analyzes and studies the interface connection form, substrate, and local delamination effects of the indentation behavior of the coating structure under the conical concave indenter. In this paper, the finite element method, which is more convenient for analysis and calculation, is used to analyze the influence of interface connection form, substrate, and local delamination on the coating structure. The results of force displacement, interface normal stress, and interface shear stress are analyzed in detail, and the effects of the three effects on the coating structure are proved. The significance of this study is reflected in: based on the analysis of the three effects of interface connection form, substrate, and local delamination, the mechanical properties of the coating structure are more in-depth, which provides some reference for mechanical engineers to design and test the coating structure.

关键词： Coating Structure Finite Element Method Contact Mechanics Interfacial

GENETIC ENGINEERING NEURAL STEM CELL MODIFIED BY LENTIVIRUS FOR REPAIR OF SPINAL CORD INJURY IN RATS

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Medical Sciences Journal 2006年第2期21卷 120-124页

作者： Xun tang Pei-qiang Cai Yue-qiu Lin Martin Oudega Bas Blits Ling Xu Yun-kang Yang Tian-hua Zhou Department of Orthopaedics Kunming General Hospital of Chengdu Military Command Kunming 650032 The Miami Project to Cure Paralysis University of Miami School of Medicine Miami FL 33101 USA Graduate School for Neurosciences Amsterdam Netherlands Institute for Brain Research Amsterdam Postbus 7057 1007 MB the Netherlands Kunming Institute of Zoology Chinese Academy of Sciences Kunming 650000

Objective To explore the feasibility for therapy of spinal cord injury （SCI） by genetic engineering neural stem cell （NSC） modified by lentiviral vector. Methods Following the construction of the genetic engineering NSC modified by lentivirus to secrete both neurotrophic factor-3 （NT-3） and green fluorescence protein （GFP）, hemisection of spinal cord at the level of T10 was performed in 56 adult Wistar rats that were randomly divided into 4 groups （ n = 14 ）, namely 3 therapeutic groups and 1 control group. The therapeutic groups were dealed with NSC, genetic engineering NSC, and concentrated lentiviral supematant which carries both GFP and NT-3, respectively. Then used fluorescence microscope to detect the transgenic expression in vitro and in vivo, migration of the grafted cells in vivo, and used the Basso, Beattie, and Bresnahan （BBB） open-field locomotor test to assess the recovery of function. Results The transplanted cells could survive for long time in vivo and migrate for long distance. The stable transgenie expression could be detected in vivo. The hindlimb function of the injured rats in 3 therapeutic groups, especially those dealed with genetic engineering NSC, improved obviously. Concision It is feasible to combine NSC with lentivirus for the repair of SCI. NSC modified by lentivirus to deliver NT-3, acting as a source of neurotrophic factors and function cell in vivo, has the potential to participate in spinal cord repair.

关键词： lentivirus spinal cord injury neural stem cell neurotrophic factor-3