检索结果-南通市图书馆

Pepper variome reveals the history and key loci associated with fruit domestication and diversification

Molecular Plant 2022年第11期15卷 1744-1758页

作者： Yacong Cao Kang Zhang Hailong Yu Shumin Chen Donghui Xu Hong Zhao Zhenghai Zhang Yinqing Yang Xiaozhen Gu Xinyan Liu Haiping Wang Yaxin Jing Yajie Mei Xiang Wang Véronique Lefebvre Weili Zhang Yuan Jin Dongliang An Risheng Wang Paul Bosland Xixiang Li iian paran Baoxi Zhang Giovanni Giuliano Lihao Wang Feng Cheng Key Laboratory of Vegetables Geneticsand Physiology of China Ministry of Agriculture and Rural AffairsKey Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture and Rural AffairsSino-Dutch Joint Laboratory of Horticultural GenomicsInstitute of Vegetables and FlowersCAAS(Chinese Academy of Agricultural Sciences)12 Zhongguancun South StreetBeijing 100081P.R.China INRAE GAFLUnitéde Génétique et Amélioration des Fruits et Légumes84140 MontfavetFrance Institute of Vegetables Academy of Agricultural Sciences of Guangxi174 Daxue East RoadNanning 53007P.R.China Department of Plant and Environmental Sciences NMSULas CrucesNM 88003USA Institute of Plant Sciences Agricultural Research OrganizationThe Volcani CenterRishon LeZionIsrael Biotechnology and Agroindustry Division ENEAItalian National Agency for New TechnologiesEnergy and Sustainable DevelopmentVia Anguillarese301-00123 RomaItaly

Pepper(Capsicum spp.)is an important vegetable crop that provides a unique pungent sensation when *** construction of a pepper variome map,we examined the main groups that emerged during domestication and breeding of ***,their relationships and temporal succession,and the molecular events underlying the main *** results showed that the initial differentiation in fruit shape and pungency,increase in fruit weight,and transition from erect to pendent fruits,as well as the recent appearance of large,blocky,sweet fruits(bell peppers),were accompanied by strong selection/fixation of key alleles and introgressions in two large genomic ***,we identified Up,which encodes a BIG GRAIN protein involved in auxin transport,as a key domestication gene that controls erect vs pendent fruit *** up mutation gained increased expression especially in the fruit pedicel through a 579-bp sequence deletion in its 5′upstream region,resulting in the phenotype of pendent *** function of Up was confirmed by virus-induced gene *** together,these findings constitute a cornerstone for understanding the domestication and differentiation of a key horticultural crop.

关键词： Capsicum variome domestication fruit orientation pungency fruit shape sweet pepper blocky fruit pepper narrow fruit pepper

来源：

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

An improved numerical model of ski-jump flood discharge atomization

引用

Journal of Mountain Science 2022年第5期19卷 1263-1273页

作者： LIAN Ji-jian ZHANG Shu-guang HE Jun-ling State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin UniversityTianjin 300350China School of Civil Engineering Tianjin UniversityTianjin 300350China

Atomizing rainfall caused by flood discharge of high dams poses a great threat to the safety of powerhouse and ecological *** an indispensable means,numerical calculation is widely used in the safety design of discharge *** distribution of rainfall intensity is closely related to the trajectory nappe shape,jet trajectory distances,the splashed water droplet diameter and its velocity,and the spatial distribution of downstream nappe *** this paper,an experimental result is used to verify the improved stochastic splash mathematical model under different bucket types and discharge conditions,and the sensitivity of downstream rainfall intensity distribution to the shape of trajectory nappe,discharge flow,spatial distribution of downstream nappe wind,and the corresponding relationship between the droplet diameter and its splashing velocity is *** results show that the calculation accuracy of downstream rainfall intensity distribution is significantly improved when the above factors are taken into *** is found that the bucket type and flood discharge rate play the greatest role in the rainfall intensity distribution,followed by the downstream nappe wind distribution,and finally the corresponding relationship between the diameter and velocity of splash ***,these factors should be considered comprehensively when the rainfall intensity distribution of flood discharge atomization is *** study can help us to understand the influence factors of flood discharge atomization more deeply and predict the distribution of flood discharge atomization rainfall intensity more accurately.

关键词： Flood discharge atomization Rainfall intensity distribution Numerical calculation Sensitivity analysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Perturbation Solutions for Thermal Process of Honeycomb Regenerator

引用

Journal of Iron and Steel Research(International) 2007年第4期14卷 6-10,48页

作者： AI Yuan-fang MEI Chi HUANG Guo-dong JIANG Shao-iian School of Energy Science and Engineering Central South University Changsha 410083 Hunan China

A parameter perturbation for the unsteady-state heat-transfer characteristics of honeycomb regenerator is presented. It is limited to the cases where the storage matrix has a small wall thickness so that no temperature variation in the matrix perpendicular to the flow direction is considered. Starting from a two-phase transient thermal model for the gas and storage matrix, an approximate solution for regenerator heat transfer process is derived using the multiple-scale method for the limiting case where the longitudinal heat conduction of solid matrix is far less than the convective heat transfer between the gas and the solid. The regenerator temperature profiles are expressed as Taylor series of the coefficient of solid heat conduction item in the model. The analytical validity is shown by comparing the perturbation solution with the experiment and the numerical solution. The results show that it is possible for the perturbation to improve the effectiveness and economics of thermal research on regenerators.

关键词： honeycomb regenerator thermal process asymptotic analysis semi-analytic method

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Discovery and identification of serum biomarkers of Wilms＇ tumor in mice using proteomics technology

引用

Chinese Medical Journal 2012年第10期125卷 1727-1732页

作者： JIA Zhan-kui WANG Jia-xiang YANG Jin-iian XUE Rui ZHANG Da WANG Guan-nan MA Sheng-li DUAN Zhen-feng Department of Urologic Surgery First Affiliated HospitallZhengzhou UniversityZhengzhouHenan 450052China Department of Pediatric Surgery First Affiliated HospitallZhengzhou UniversityZhengzhouHenan 450052China Department of Pathology First Affiliated HospitallZhengzhou UniversityZhengzhouHenan 450052China Department of Orthopedic Surgery Second Hospital of Kaifeng CityKaifengHenan 475002China Massachusetts General Hospital Department of Hematology/OncologyBoston 02138USA

Background Wilms＇ tumor （nephroblastoma） is a cancer of the kidneys that occurs typically in children and rarely in adults. Early diagnosis is very important for the treatment and prognosis of the disease. The aim of our study was to discover and identify potential non-invasive and convenient biomarkers for the diagnosis of Wilms＇ tumor. Methods Nude mice were used to construct a Wilms＇ tumor model by injecting nephroblastoma cells into their bilateral abdomen. We collected 94 serum samples from mice consisting of 45 samples with Wilms＇ tumor and 49 controls. The serum proteomic profiles of the samples were analyzed via surface-enhanced laser desorption/ionization time-of-flight mass spectrometry. The candidate biomarkers were purified by high-performance liquid chromatography, identified by liquid chromatography-mass spectrometry, and validated using ProteinChip immunoassays. Results We finally retrieved two differential proteins （mlz 4509.2; 6207.9）, which were identified as apolipoprotein A-II and polyubiquitin, respectively. The expression of apolipoprotein A-II was higher in the Wilms＇ tumor group than in the control group （P 〈0.01）. By contrast, the expression of polyubiquitin was lower in the Wilms＇ tumor group than in the control group. Conclusion Apolipoprotein A-II and polyubiquitin may be used as potential biomarkers for nephroblastoma in children, and the analysis of apolipoprotein A-II may help diagnose and treat Wilms＇ tumor.

关键词： proteomics Wilms tumor, biomarker

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

北方防沙带河西走廊段景观格局时空演变及其防风固沙服务响应

引用

应用生态学报 2023年第9期34卷 2518-2526页

作者：连虎刚曲张明刘春芳贺扬希西北师范大学社会发展与公共管理学院兰州730070 甘肃省土地利用与综合整治工程研究中心兰州730070

景观格局是影响生态系统服务供给和维持的重要因素,也是区域生态系统健康稳定和土地利用优化决策的基础。本研究以北方防沙带河西走廊段为研究区,运用Fragstats 4.2软件、修正风蚀模型、空间自相关分析方法量化并分析了2000—2020年间... 详细信息

景观格局是影响生态系统服务供给和维持的重要因素,也是区域生态系统健康稳定和土地利用优化决策的基础。本研究以北方防沙带河西走廊段为研究区,运用Fragstats 4.2软件、修正风蚀模型、空间自相关分析方法量化并分析了2000—2020年间景观格局和防风固沙服务的时空演变及响应关系。结果表明:2000—2020年间,研究区土地利用类型景观格局变化明显,以戈壁转向耕地以及草地与耕地间的相互转变为主,景观格局更趋于多样化、异质化和破碎化。研究区防风固沙服务空间格局总体呈现“东南高、西北低”的特点,防风固沙量呈现先增加后减少的趋势。耕地和草地的防风固沙量较高,裸地和建设用地等景观防风固沙量较低。研究期内,Shannon多样性、斑块密度和景观形状指数与防风固沙服务均呈正相关,平均斑块面积与防风固沙服务呈负相关。说明在以戈壁荒漠为主导景观的北方防沙带河西走廊段,景观异质性增加、分布越均匀、斑块数量越多、景观形状越复杂等特征对防风固沙服务有促进效应。

关键词：北方防沙带景观格局指数防风固沙服务修正风蚀方程空间自相关

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

农特产品品牌形象建构的设计探索

引用

浙江农林大学学报 2011年第5期28卷 789-793页

作者：杨文剑浙江农林大学艺术设计学院浙江临安311300

虽然农特产品已进入快速发展期,但是今日多数农特产品品牌仍处于无品牌或弱品牌阶段,相对于商业品牌建构而言,无论是数量还是质量都远远落在后面。有鉴于此,从商业设计的角度提出农特产品品牌形象可分为区域品牌形象建构与企业品牌形象... 详细信息

虽然农特产品已进入快速发展期,但是今日多数农特产品品牌仍处于无品牌或弱品牌阶段,相对于商业品牌建构而言,无论是数量还是质量都远远落在后面。有鉴于此,从商业设计的角度提出农特产品品牌形象可分为区域品牌形象建构与企业品牌形象建构。对于区域品牌建构由政府与行业协会主导设计开发整套品牌形象规范,并承担品牌推广责任。企业品牌形象又可分为中、低端品牌形象与高端品牌形象,前者可借助区域品牌进行发展,后者是区域品牌的杰出代表,应强调企业品牌个性,通过新产品新技术的研发,申请绿色食品与有机产品认证,采用生态设计理念建构高端品牌形象,培养高端消费群体。

关键词：农特产品品牌形象品牌建构区域品牌企业品牌

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Escherichia coli Expression of Lactate Dehydrogenase C Gene of Black-Lipped Pika in Western Sichuan Plateau

引用

Animal Husbandry and Feed Science 2011年第2期3卷 15-17页

作者： ZHANG Qing-iian LIU Hao-hao HE Qing-hua LIU Dong-qi LI Meng LIANG Zheng-xu Department of Lab Medicine Chengdu Medical College Chengdu 610083 China College of Life Science & Technology Southwest University for Nationalities Chengdu 610041 China Animal Husbandry and Veterinary Bureau of Aba County Aba 624000 China

[ Objective] To express lactate dehydrogenase C （LDH-C） gene in prokaryotic system and then purify the recombinant protein. E Meth- od] The LDI-I-C gene was amplified from black-lipped pika（ Ochotona curzoniae） by RT-PCR and ligated to the expression vector pET-32a. The E. coli BL21 （DE3） carrying the LDI-I-C gene was obtained and induced by IPTG （isopropy-beta-D-thiogalactoside）. The expression products were analyzed by SDS-PAGE and purified by affinity chromatography. L Result] An approximately 1.0 kbp band appeared in the RT-PCR products as the- oretically expected. As evidenced by PCR and double enzyme digestion, an approximately 1.0 kbp fragment appeared, which indicated successful construction of expression vector. As analyzed by SDS-PAGE, a fusion protein with molecular weight slightly larger than 45 kDa was expressed in form of inclusion body. And very pure fusion protein was obtained by nickel ions-charged affinity chromatography. [ Coaclusion] The LDH-C gene of black-lipped pika has been cloned and expressed in E. coil

关键词： Black-lipped pika Lactate dehydrogenase C Prokaryotic expression

来源：

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

环行桩群加承台基础结构局部冲刷试验研究

引用

长江科学院院报 2011年第11期28卷 10-13,18页

作者：张磊佘小建南京水利科学研究院河流海岸研究所南京210029

环行桩群加承台基础结构的稳定是结构安全运行的基本保障,因此该基础结构的冲刷规律试验研究意义很重要。由于受场地、模型沙选择限制,需要利用系列模型延伸法进行模型试验来研究基础结构海域局部冲刷问题。水流流态表明基础结构尾流旋... 详细信息

环行桩群加承台基础结构的稳定是结构安全运行的基本保障,因此该基础结构的冲刷规律试验研究意义很重要。由于受场地、模型沙选择限制,需要利用系列模型延伸法进行模型试验来研究基础结构海域局部冲刷问题。水流流态表明基础结构尾流旋涡和侧向绕流是影响基础结构冲刷的主要动力。局部冲刷试验表明基础结构局部冲刷部位基本在基础结构两侧和背水面地带,极端高潮位时最大冲刷深度为6.01m,冲刷深度随水位降低而减少。

关键词：环行桩群局部冲刷系列模型试验最大冲刷深度

来源：

维普期刊数据库

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

2013—2021年青岛市市北区水痘流行特征分析

引用

中国初级卫生保健 2023年第3期37卷 65-67页

作者：刘珍珠田海珍胡宝翠青岛市疾病预防控制中心山东青岛266033 青岛市市北区疾病预防控制中心山东青岛266011

目的:分析青岛市市北区水痘流行特征,为水痘防控和制定免疫策略提供科学依据。方法:通过中国疾病预防控制信息系统收集2013—2021年青岛市市北区水痘报告病例数据,采用描述性流行病学方法对病例进行“三间”分布和发病率分析。结果:2013... 详细信息

目的:分析青岛市市北区水痘流行特征,为水痘防控和制定免疫策略提供科学依据。方法:通过中国疾病预防控制信息系统收集2013—2021年青岛市市北区水痘报告病例数据,采用描述性流行病学方法对病例进行“三间”分布和发病率分析。结果:2013—2021年市北区共报告水痘病例6711例,年均发病率为68.87/10万。2013—2021年水痘发病率由94.60/10万下降至42.66/10万,不同年份间水痘发病率的差异有统计学意义(χ^(2)=1123647.38,P<0.01)。水痘发病呈现明显季节性,每年3—5月和11月—次年1月为水痘高发期。男性3489例,女性3222例,男女性别比例为1∶0.92。发病人数排前3位的年龄组分别为15~19岁、5~9岁、10~14岁,3个年龄组发病人数占总病例数的47.77%,水痘发病年龄出现后移现象。职业分布以学生为主,发病人数占总病例数的44.23%。结论:2013—2021年市北区水痘发病率明显下降,发病年龄后移,以学生为主。水痘防控应重点关注中小学生,加强综合防控措施,加强水痘疫苗接种的宣传和入学查验,提高水痘疫苗接种率。

关键词：水痘流行特征水痘疫苗防控建议

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

根据形态和叶片微形态特征讨论无芒披碱草的归并

引用

西北植物学报 2008年第7期28卷 1333-1338页

作者：张同林苏旭蔡联炳中国科学院西北高原生物研究所

通过形态学观测和叶片解剖特征分析,比较了无芒披碱草、短芒披碱草及老芒麦3个近缘种的主要性状差异,以探讨无芒披碱草的系统分类归属.结果表明,在外部形态上无芒披碱草与短芒披碱草差异甚小,难以进行区分,但与老芒麦差异明显,是典型的... 详细信息

通过形态学观测和叶片解剖特征分析,比较了无芒披碱草、短芒披碱草及老芒麦3个近缘种的主要性状差异,以探讨无芒披碱草的系统分类归属.结果表明,在外部形态上无芒披碱草与短芒披碱草差异甚小,难以进行区分,但与老芒麦差异明显,是典型的种间关系;在叶片解剖上,无芒披碱草的绝大多数特征与短芒披碱草的一致或类同,可与老芒麦的却存在明显间断.故研究认为:无芒披碱草与短芒披碱草是同一个种,无芒披碱草应作为短芒披碱草的异名.

关键词：禾本科披碱草属无芒披碱草形态变异叶片微形态

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：