检索结果-南通市图书馆

褪黑色素能抑制口腔内Candida parapsilosis生物膜的形成过程

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

褪黑色素能抑制口腔内Candida parapsilosis生物膜的形成过程

香港2005钢结构规范不需要假定有效长度的二阶分析和设计法

中华口腔医学会口腔修复学专业委员会第十次全国口腔修复学术大会

作者：杨海萍 Peter Chiu-Shun TSANG Edmond Ho-Nang POW Otto Lok-Tao lam paul Wai-Kei TSANG 浙江大学医学院附属口腔医院香港大学牙学院

目的:体外研究褪黑色素对于口腔内Candida parapsilosis生物膜的形成过程的影响方法:体外培养Candida parapsilosis生物膜,将不同浓度的褪黑色素分别加入到生物膜的形成阶段和成熟阶段,最后通过XTT方法来检测生物膜的活性。

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

建筑钢结构进展 2007年第5期9卷 57-62页

作者：彭达材关建祺陈绍礼香港特别行政区屋宇署奥雅纳工程顾问公司香港理工大学土木及结构工程系

在2003年,香港特别行政区屋宇署授权由香港理工大学和奥雅纳工程顾问(香港)有限公司所组成的联合顾问进行一项用极限状态方法进行结构钢设计的顾问研究。在此项研究中,联合顾问回顾现有香港和海外的钢结构设计和建造的标准和实践,并为... 详细信息

在2003年,香港特别行政区屋宇署授权由香港理工大学和奥雅纳工程顾问(香港)有限公司所组成的联合顾问进行一项用极限状态方法进行结构钢设计的顾问研究。在此项研究中,联合顾问回顾现有香港和海外的钢结构设计和建造的标准和实践,并为香港地区结构钢的使用起草一本极限状态设计规范。此规范重点放在基于性能的设计上,以给予工程师更多的自由选择。本文详述了这一规范在细长框架使用二阶分析设计方面的特点,设计中不需要对弯曲屈曲假定计算长度。规范中的这一新的可选设计方法比基于计算长度概念的现有设计方法更可靠、更有效,而现有设计方法在很多实际应用中发现有很多局限。

关键词：二阶分析高等分析屈曲钢结构构件缺陷框架失稳

Identification and Quantification of Allelochemicals from Selected Sweet Potato (<i>Ipomoea batatas</i>(L.) lam.) Cultivars

在线全文

学校读者我要写书评

暂无评论

American Journal of Plant Sciences 2019年第12期10卷 2354-2365页

作者： Bhawna Soni Te-Ming paul Tseng Ziming Yue Department of Plant and Soil Sciences Mississippi State University Mississippi State MS USA

Allelopathic compounds have the potential to inhibit the growth and development of other organisms in a diverse manner ranging from shifting nutrients and enhancing their growth to inflicting diseases. In addition, these compounds influence seedling growth and seed germination of various crops. The goal of this study was to identify and quantify different allelochemicals in various sweet potato cultivars through high-performance liquid chromatography techniques. Selected sweet potato slips (weight: 2.0 - 2.5 grams/slip) were propagated in separate glass tubes filled with 10.0 mL distilled water. Water extract from each glass tube was collected after 2, 4, and 6 weeks after transplanting (WAP) to identify and quantify allelochemical compounds by comparing their peaks with the retention time of standards. Results show that the concentration of allelochemicals in water extract was increased from 2 to 4 WAP but remained constant in the sixth week. Quantitative analysis revealed that the amount of chlorogenic acid was higher in all sweet potato cultivars compared to other allelochemicals. Some sweet potato cultivars, A5 and A39, exhibited higher allelopathy (18.28 - 19.37 ppm/slip) and reduced the height and biomass of Palmer amaranth the most due to the presence of increased concentration of combined allelochemicals, while other cultivars produced lesser allelochemicals (10.90 ppm/slip) and did not reduce the growth of the weed species. Allelopathic sweet potato cultivars high in chlorogenic acid production can effectively suppress Palmer amaranth with minimal dependence on chemicals to manage weeds and harmful pests under sustainable agricultural system.

关键词： Sweet Potato (Ipomoea batatas (L.) lam.) Allelochemicals High Performance Liquid Chromatography Seedling Growth Retention Time

Development of a Performant Method for Glucocapparin Determination in Boscia senegalensis lam Ex. Poir.: A Study of the Variability

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

American Journal of Analytical Chemistry 2013年第2期4卷 104-110页

作者： Momar Talla Gueye Dogo Seck Abdoulaye Diallo Danny Trisman Christophe Fischer Jean-paul Barthelemy Jean-paul Wathelet Georges Lognay Gembloux Agro-Bio Tech Unit Analysis Quality Risks—Laboratory of Analytical Chemistry University of Liege Gembloux Belgium Institute of Food Technology (ITA) Hann-Dakar Senegal Regional Centre for Research in Ecotoxicology and Environmental Safety (CERES/Locustox) Dakar Senegal University of Liege Gembloux Agro-Bio Tech Unit of General and Organic Chemistry Gembloux Belgique

This study describes a glucocapparin determination method. Based on rapeseed determination of glucosinolate (GSL), the equation of the average straight regression line is Y = 100.42X – 0.03 (R2 = 0.9998). Enzymatic hydrolysis of glucocapparin extracted from leaves and fruits of B. senegalensis, analyzed by SPME-GC-MS confirmed the presence of methylisothiocyanate as the main hydrolysis glucocapparin product. Monitoring glucocapparin contents in B. senegalensis leaves and fruits collected in 4 localities in Senegal showed differences between organs according localities and periods of harvest. Glucocapparin content was very high in dry season particularly in January and the lowest rates were recorded during the rainy period between August and November.

关键词： Boscia Senegalensis Validation Method Glucocapparin Monitoring Senegal

苯并(a)芘致毒的鱼的分子生态毒理学指标研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国环境科学 1999年第5期19卷 417-420页

作者：陈加平徐立红吴振斌张甬元林群声中国科学院水生生物研究所湖北武汉430072 香港城市大学生物及化学系

通过测定典型的多环芳烃类物质苯并（a）芘（BaP）致毒后鱼体内几种重要分子生态毒理学指标的变化，来反映苯并（a）芘致毒对鱼体的影响．结果表明，肝脏ATPase活性降低，GST活性升高，DNA加合物相对标记水平（RAL）也增大，而EROD活性... 详细信息

通过测定典型的多环芳烃类物质苯并（a）芘（BaP）致毒后鱼体内几种重要分子生态毒理学指标的变化，来反映苯并（a）芘致毒对鱼体的影响．结果表明，肝脏ATPase活性降低，GST活性升高，DNA加合物相对标记水平（RAL）也增大，而EROD活性没有明显改变．这说明苯并（a）芘致毒对鱼体正常生命活动产生了重大影响，并具有潜在的致癌性．

关键词：苯并(a)芘分子生态毒理学 DNA加合物鱼体

Geographic information science in the era of geospatial big data: A cyberspace perspective

在线全文

学校读者我要写书评

暂无评论

The Innovation 2022年第5期3卷 21-22页

作者： Xintao Liu Min Chen Christophe Claramunt Michael Batty Mei-Po kwan Ahmad MSenousi Tao Cheng Josef Strobl Arzu Cöltekin John Wilson Temenoujka Bandrova Milan Konecny paul MTorrens Fengyuan Zhang Li He Jinfeng Wang Carlo Ratti Olaf Kolditz Alexander Klippel Songnian Li Hui Lin Guonian Lu Department of Land Surveying and Geo-Informatics Hong Kong Polytechnic UniversityHong Kong SARKowloonChina Key Laboratory of Virtual Geographic Environment(Ministry of Education of PRC) Nanjing Normal UniversityNanjing 210023China The French Naval Academy Research Institute 29240 Lanveoc-PoulmicFrance The Bartlett Centre for Advanced Spatial Analysis(CASA) University College London(UCL)WC1E 6BT LondonUK Institute of Space and Earth Information Science The Chinese University of Hong KongHong Kong SARShatin 999077China Department of Civil Engineering Cairo University12613 CairoEgypt SpaceTimeLab Department of CivilEnvironmental and Geomatic EngineeringUniversity College London(UCL)WC1E 6BT LondonUK Department of Geoinformatics University of Salzburg5020 SalzburgAustria Institute of Interactive Technologies(IIT) University of Applied Sciences and Arts Northwestern Switzerland FHNW5210 WindischSwitzerland Spatial Sciences Institute University of Southern CaliforniaLos AngelesCA 90007USA Laboratory on Cartography Department of Photogrammetry and CartographyUniversity of ArchitectureCivil Engineering and Geodesy1164 SofiaBulgaria Laboratory on Geoinformatics and Cartography Department of GeographyMasaryk University61137 BrnoCeskáRepublika Computer Science and Engineering Tandon School&Center for Urban Science+ProgressNew York UniversityNew YorkNY 10012USA School of Humanities and Social Science Xi’an Jiaotong UniversityXi’an 710049China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China Department of Urban Studies and Planning Massachusetts Institute of TechnologyCambridgeMA 02139USA Centre for Environmental Research Helmholtz Centre for Environmental Research-UFZ04318 LeipzigGermany Laboratory of Geo-information Science and Remote Sensing Wageningen University&ResearchWageningen 6708the Netherlands Department of Civil Engineering Toronto Metropolitan UniversityTorontoON M5B 2K3Canada School of Geography and Env

The advent of information and communication technology and the Internet of Things have led our society toward a digital *** proliferation of personal computers,smartphones,intelligent autonomous sensors,and pervasive network interactions with individuals have gradually shifted human activities from offline to online and from in person to *** transformation has brought a series of challenges in a variety of fields,such as the dilemma of placelessness,some aspects of timelessness(no time relevance),and the changing relevance of distance in the field of geographic information science(GIScience).In the last two decades,“cyber thinking”in GIScience has received significant attention from different *** instance,human activities in“cyberspace”need to be reconsidered when coupled with the geographic space to observe the first law of geography.

关键词： computer cyber instance

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

保罗·利科的互文性圣经神学

圣经文学研究 2011年第1期 283-319页

作者：林子淳香港汉语基督教文化研究所

利科诠释圣经文本时常有意识地聚焦于叙事文类之上,以突显它与其他文类产生互动时所扮演的角色。对信仰群体而言,互文性是活生生之道的作为,它使用人的论述,以叙事作为骨干,乃至于在历史中被传递着。换句话说,由叙事文类的互文作用而产... 详细信息

利科诠释圣经文本时常有意识地聚焦于叙事文类之上,以突显它与其他文类产生互动时所扮演的角色。对信仰群体而言,互文性是活生生之道的作为,它使用人的论述,以叙事作为骨干,乃至于在历史中被传递着。换句话说,由叙事文类的互文作用而产生的转化式阅读并非一种强加于文本中的擅自主张,而是早已存在于经卷中的神学现象。在这种意义上,诠释圣经就是启动上帝之道的契机,借此一种互文性圣经神学便可被建立起来。尽管如此,原收信人和当下作为听众的信仰群体的语境和响应是不尽相同的;它们若有类近之处的话,是因它们同属一个历史性的群体,并负有见证奠基性事件的使命,这更涉及此群体的身份建构问题。这也许是利科自1980年代起愈来愈转向叙事理论和扣紧读者实践方面的讨论之原因。利科从《时间与叙事》和同期作品显示出,圣经诠释、神学建构和信仰群体的传统之间充满张力并影响着诠释者身份的形成。但通过运用实践智慧,这又能开放给具创意的崭新可能性。

关键词：利科诠释互文性叙事传统

在线全文

学校读者我要写书评

暂无评论

香港地区危害房屋建筑和农林作物的白蚁名录

住宅科技 1984年第5期 34-34页

作者：高道蓉 paul lam 香港大学动物学系南京市白蚁防治研究所

香港地区位于我国广东省南部,属亚热带气候。在W. V. Harris(1963)报导香港所有的7种螱类:麻头砂螱Cryptotermes brevis(Walker)、台湾泌乳螱Coptotermes formosanus Shiraki。福建网螱

关键词：农林作物香港

Metabolic diversity in sweet potato (Ipomoea batatas, lam.) leaves and storage roots

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Horticulture Research 2019年第1期6卷 1614-1622页

作者： Margit Drapal Genoveva Rossel Bettina Heider paul D.Fraser Biological Sciences Royal Holloway University of LondonEgham TW200EXUK International Potato Center(CIP) CGIAR Research Program on RootsTubers and BananasLima 12Peru

Sweet potato(Ipomoea batatas,lam.)is an important root vegetable in developing *** its domestication in Neotropical America,human migration led to the distribution of the sweet potato plant throughout the *** leaf and storage root are high in compounds of nutritional ***,the storage roots are of particular value due to their significant content of provitamin A(β-carotene).The breeding effort for elite sweet potato lines led to the reduction of genetic diversity and the potential to improve other *** focus of the present study was to assess the metabolic diversity of 27 sweet potato cultivars including landraces and improved varieties.A metabolite profiling approach was optimised for sweet potato leaf and storage root tissue and 130 metabolites identified with three different analysis *** data highlighted a lack of correlation between storage root phenotype and leaf ***,the metabolic diversity of storage roots was based on the secondary metabolism,including phenylpropanoids and *** cultivars of three different flesh colouration(yellow,orange and purple)showed a significant difference of the primary *** data demonstrates the value of metabolite profiling to breeding programs as a means of identifying differences in phenotypes/chemotypes and characterising parental material for future pre-breeding resources.

关键词： breeding cultivar Ipomoea