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Does disturbance regime change community assembly of angiosperm plant communities in the boreal forest?

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Journal of Plant Ecology 2014年第2期7卷 188-201页

作者： Jian Zhang Stephen J.mayor Fangliang He Department of Renewable Resources University of AlbertaEdmontonAlberta T6G 2H1Canada Department of Biological Science University of AlbertaEdmontonAlberta T6G 2E9Canada

Aims To examine if and how species and phylogenetic diversity change in relation to disturbance,we conducted a review of ecological literature by testing the consistency of the relationship between phylogenetic diversity and disturbance and compared taxonomic groups,type of disturbance and ecosystem/habitat *** provide a case study of the phylogenetic diversity–disturbance relationship in angiosperm plant communities of a boreal forest region,compared with types of natural and anthropogenic disturbances and plant growth *** Using a large-scale sampling plot network along a complete(0–100%)anthropogenic disturbance gradient in the boreal biome,we compared the changes of angiosperm plant community structure and composition across *** estimated natural disturbance with historical records of major *** then calculated phylogenetic diversity indexes and determined species richness in order to compare linear and polynomial trends along disturbance *** also compared the changes of community structure for different types of anthropogenic disturbances and examined how the relationships between species and phylogenetic diversity and disturbance regimes vary among three different life forms(***,graminoids and woody plants).Important Findings Phylogenetic diversity was inconsistently related to disturbance in previous studies,regardless of taxon,disturbance type or ecosystem *** the understudied boreal ecosystem,angiosperm plant communities varied greatly in species richness and phylogenetic diversity along anthropogenic disturbance gradients and among different disturbance *** general,a quadratic curve described the relationship between species richness and anthropogenic disturbance,with the highest richness at intermediate anthropogenic disturbance ***,phylogenetic diversity was not related to disturbance in any consistent manner and species richness was not correlated with phylogenetic *** rel

关键词： community assembly community phylogenetics community structure biodiversity human disturbance phylogeny taiga

BOMBAY THROUGH THE AGES

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技术经济与管理研究 1998年第3期 17-18页

作者： Vishakha Raut, mayor of Mumbai

Lupeol:An antioxidant triterpene in Ficus pseudopalma Blanco(Moraceae)

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Asian Pacific Journal of Tropical Biomedicine 2014年第2期4卷 109-118页

作者： Librado A Santiago Anna Beatriz R.mayor Research Center for the Natural and Applied Sciences.University of Santo Tomas Manila.Philippines Department of Biochemistry Faculty of Pharmacy.University of Santo TomasManila.Philippines The Graduate School.University of Santo Tomas Manila.Philippines

Objective:To assess the antioxidant activity of Ficus pseudopalma Blanco(Moraceae)(***) and characterize the active components present in ***:Column chromatography of crude ethanol leaf extract of *** was performed and seven fractions were obtained,labeled as Ft.F2,F3,F4.F5,F6,***,Criess,Kenton and superoxide radical scavenging assays were performed to assess the antioxidant ability of the *** layer chromatography(TLC),high performance liquid chromatography and Fourier transfer infrared spectroscopy(FTIR) were performed to identify and characterize the bioactive component present in each fractions of ***:DPPH and FRAP assay showed that F5.F6 and F7 exhibited the good proton accepting ability and reducing power as compared to the other *** fractions exhibited a good nitric oxide radical scavenging activity wherein F1,F2 and F3 showed the highest ***,all of the fractions exhibited a stimulatory activity on hydroxyl and superoxide *** matched one of the spots on the thin layer chromatography chromatogram of the *** gradient high performance liquid chromatography and spiking of lupeol with the fraction revealed the presence of 5.84 mg/L lupeol in *** spectra of the fractions revealed the presence of C-C,OH,aromatic C=C and C=O ***:The identified lupeol in *** may be responsible for the exhibited antioxidant property of the ***,knowing the antioxidant capability of the plant,*** can be developed into products which can help prevent the occurrence of oxidative stress related diseases.

关键词： Antioxidant Oxidative stress Free radical scavenging Reducing power Phenolic acids Ficus pseudopalma Blanco

Direct electrification of silicon microfluidics for electric field applications

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Microsystems & Nanoengineering 2023年第3期9卷 145-157页

作者： Diego Monserrat Lopez Philipp Rottmann Gabriel Puebla-Hellmann Ute Drechsler Marcel mayor Sven Panke Martin Fussenegger Emanuel Lörtscher IBM Research Europe-Zurich Säumerstrasse 4CH-8803 RüschlikonSwitzerland ETH Zürich Department of Biosystems Science and EngineeringMattenstrasse 264058 BaselSwitzerland University of Basel Department of ChemistrySt.Johanns-Ring 19CH-4056 BaselSwitzerland Institute for Nanotechnology(INT) Karlsruhe Institute of Technology(KIT)P.O.Box 364076021 KarlsruheGermany University of Basel Faculty of Life ScienceBaselSwitzerland

Microfluidic systems are widely used in fundamental research and industrial applications due to their unique behavior, enhanced control, and manipulation opportunities of liquids in constrained geometries. In micrometer-sized channels, electric fields are efficient mechanisms for manipulating liquids, leading to deflection, injection, poration or electrochemical modification of cells and droplets. While PDMS-based microfluidic devices are used due to their inexpensive fabrication, they are limited in terms of electrode integration. Using silicon as the channel material, microfabrication techniques can be used to create nearby electrodes. Despite the advantages that silicon provides, its opacity has prevented its usage in most important microfluidic applications that need optical access. To overcome this barrier, silicon-on-insulator technology in microfluidics is introduced to create optical viewports and channel-interfacing electrodes. More specifically, the microfluidic channel walls are directly electrified via selective, nanoscale etching to introduce insulation segments inside the silicon device layer, thereby achieving the most homogeneous electric field distributions and lowest operation voltages feasible across microfluidic channels. These ideal electrostatic conditions enable a drastic energy reduction, as effectively shown via picoinjection and fluorescence-activated droplet sorting applications at voltages below 6 and 15 V, respectively, facilitating low-voltage electric field applications in next-generation microfluidics.

关键词： injection walls overcome

Agronomic evaluation of eight 41 B×110 richter grapevine genotypes as rootstock candidates for mediterranean viticulture

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Horticultural Plant Journal 2023年第4期9卷 720-728页

作者： Diana Marín Carlos Miranda Francisco Javier Abad Jorge Urrestarazu Blanca mayor Ana Villa-Llop Luis Gonzaga Santesteban Department of Agronomy Biotechnology and Food SciencePublic University of NavarreCampus ArrosadiaPamplona 31006NavarraSpain Institute for Multidisciplinary Research in Applied Biology(IMAB-UPNA) Public University of NavarreCampus ArrosadiaPamplona 31006NavarraSpain Institute for Agri-food Technology and Infrastructure of Navarre(INTIA) Edificio de PeritosAvda.Serapio Huici 22Villava 31610NavarraSpain

Choosing the most appropriate rootstock(s)is a key decision for the profitability of vineyards;therefore,there must be a sufficient range of rootstocks in the market adapted to different environmental conditions and production ***,rootstock-breeding programs have been scarce in recent decades,and most of the rootstocks used today were bred a century ago,when the needs of the sector were very different from *** this work,we aimed to evaluate new rootstock candidates before their introduction in the *** agronomic evaluation was conducted on eight novel rootstock genotypes obtained from the first generation of the cross-pollination of 41 B Millardet et de Grasset(41 B)and 110 Richter(110 R)grafted with‘Syrah’and‘Tempranillo’and planted in a typical vineyard of the Ebro Valley in *** the four consecutive growing seasons(2016–2019),growth,yield and berry composition parameters at harvest were collected.A linear mixed-effects model was constructed,considering year and block as random *** factor analysis and hierarchical clustering on principal components were performed to establish clusters of genotypes with similar *** rootstock candidates showed a very wide performance range compared to their *** trial allowed us to identify two very promising candidates(RG8 and RG10),whose registration as commercial rootstocks is already in progress.

关键词： Vitis vinifera Graft Phenolic quality Vigour Yield

英国研究发现,16岁以下儿童在放学途中具有最高的遇刺风险

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英国医学杂志中文版 2019年第4期22卷 201-202页

作者： Susan mayor 周全(译) 伦敦北京世纪坛医院病理科

英国一项大型研究发现:16岁以下儿童在放学途中具有最高的遇刺风险。“大部分儿童遇刺事件发生在刚放学后,且主要发生在接近学校和家的地方”,来自英国伦敦玛丽皇后大学(Queen Mary University of London )创伤医学中心由Paul Vulliamy... 详细信息

英国一项大型研究发现:16岁以下儿童在放学途中具有最高的遇刺风险。“大部分儿童遇刺事件发生在刚放学后,且主要发生在接近学校和家的地方”,来自英国伦敦玛丽皇后大学(Queen Mary University of London )创伤医学中心由Paul Vulliamy领导的研究团队声明。

关键词：英国儿童风险医学中心研究团队

研究提示：夜班轮班工作会降低DNA损伤修复水平

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英国医学杂志中文版 2018年第1期21卷 11-12页

作者： Susan mayor 赵梦西伦敦首都医科大学临床医学七年制2012级北京天坛医院神经内科

一项针对轮班的医务工作者的观察性研究表明，夜班工作与DNA损伤修复水平下降有关，研究提示此种效应是由褪黑素受抑制引起的。

关键词：夜班轮班工作 DNA 损伤修复水平

研究发现:常规基层医疗中对高危患者的靶向筛查肺癌检出率为2%

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英国医学杂志中文版 2020年第6期23卷 319-320页

作者： Susan mayor 崔晶(译者) 不详北京同仁医院体检科

英国的1项研究1表明,在常规基层医疗中对吸烟或既往吸烟的高危人群进行年度慢性阻塞性肺疾病(COPD)的筛查发现,有2%的人患有肺癌,而且多数在早期阶段,并可治愈。南泰恩赛德和桑德兰国家健康体系(NHS)基金机构的Helen Grover为研究的作... 详细信息

英国的1项研究1表明,在常规基层医疗中对吸烟或既往吸烟的高危人群进行年度慢性阻塞性肺疾病(COPD)的筛查发现,有2%的人患有肺癌,而且多数在早期阶段,并可治愈。南泰恩赛德和桑德兰国家健康体系(NHS)基金机构的Helen Grover为研究的作者之一,她解释道:"我们针对参加年度COPD检查的个人申报了1项新的NHS委托服务。这项服务已经在常规的NHS临床实践中建立,使得贫困地区肺癌患病率为2%、处于疾病进展期的人参与进来。"该计划是对南泰恩赛德和桑德兰地区参与COPD年度评估的55~74岁、吸烟超过10包年(相当于每天吸1包20支烟,达10年以上)的患者进行低剂量计算机断层扫描(LDCT)检查。

关键词：基层医疗高危患者疾病进展临床实践泰恩赛德高危人群早期阶段

研究发现。磁共振成像增加前列腺癌检出并减少过度诊断

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英国医学杂志中文版 2018年第7期21卷 373-374页

作者： Susan mayor 彭浩(译) 伦敦北京煤炭总医院肿瘤科

与标准的经直肠超声引导下活检相比，根据磁共振成像（MRI）结果指导靶向活检可使具有临床意义的前列腺癌栓出率提高12％。这是首次比较2种方法在疑似前列腺癌患者中应用的一项大型随机试验.

关键词：还原剂前列腺 MRI 癌症学习