检索结果-南通市图书馆

砧木-接穗互作对巴西橡胶树产量及茎围生长的影响

在线全文

学校读者我要写书评

暂无评论

世界热带农业信息 2013年第6期 1-4页

作者： tila bento beleti cardinal 田郎巴西坎皮纳斯农业研究所中国热带农业科学院橡胶研究所

迄今为止,巴西橡胶树[Hevea brasiliensis(*** *** Juss.)Muell.-Arg.]仍以人工芽接繁殖的无性系作为主要种植材料。然而,即使是同一无性系,由于所用砧木材料不同,其生势及产量往往也会表现出很大的差异。本研究通过双列分析就砧木-接... 详细信息

迄今为止,巴西橡胶树[Hevea brasiliensis(*** *** Juss.)Muell.-Arg.]仍以人工芽接繁殖的无性系作为主要种植材料。然而,即使是同一无性系,由于所用砧木材料不同,其生势及产量往往也会表现出很大的差异。本研究通过双列分析就砧木-接穗互作对橡胶无性系生势及产量的影响进行了分析研究。试验采用裂区设计,重复4次,试验材料包括按6×6部分双列组配模式所得到的36个不同砧穗组合的芽接无性系。各种砧木和接穗一般及特殊配合力的分析结果显示,砧木PB235及IAN873不但产量性能高,而且一般配合力也相对较强。由于采用未经选择的实生苗作砧木时无性系的干胶产量及一般配合力均很低,故该材料不宜用作无性系砧木。就生势而言,几种参试砧木的表现基本相似,并无显著差异。

关键词：配合力双列分析茎围嫁接巴西橡胶树

Helicobacter heilmannii sensu lato :An overview of the infection in humans

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2014年第47期20卷 17779-17787页

作者： Mario bento-Miranda Ceu Figueiredo Department of Pathology and Oncology Faculty of Medicine of the University of Porto4200-465 PortoPortugal Institute of Molecular Pathology and Immunology of the University of Porto 4200-465 PortoPortugal

Helicobacter heilmannii sensu lato(*** s.l.)is a group of gastric non-Helicobacter pylori Helicobacter species that are morphologically indistinguishable from each *** *** the stomach of several animals and may have zoonotic *** the prevalence of these infections in humans is low,they are associated with gastric pathology,including mucosa-associated lymphoid tissue lymphoma,making them a significant health ***,the taxonomy,epidemiology,microbiology,diagnosis,and treatment of these infections will be *** gastric pathology associated with *** *** in humans will also be ***,the features of the complete bacterial genomes available and studies on species-specific pathogenesis will be *** understanding of the mechanisms that underlie gastric disease development mediated by the different bacterial species that constitute *** *** essential for developing strategies for prevention and treatment of these infections.

关键词： Helicobacter heilmannii sensu lato Gastric non-Helicobacter pylori Helicobacter species Pathogenesis Diagnosis Treatment Genomes

Air quality control in the ART laboratory is a major determinant of IVF success

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2016年第4期18卷 596-599页

作者： Sandro C Esteves Fabiola C bento ANDROFERT Center for Male Reproduction Av. Dr. Heitor Penteado 1464 Campinas SP 13075-460 Brazil.

Arecently published article described how a fertility center in the UnitedStates implemented air quality control to newly designed in vitro fertilization （IVF） laboratory.1 A highly-efficient air filtration was achieved by installing a centered system supplying filtered air to the IVF laboratory and related critical areas, combining air particulate and volatile organic compound （VOC） filtration. As a consequence, live birth rates were increased by improvements in air quality. This article highlights the key aspects of air contamination in the IVF context. The topic is important not only to IVF specialists but also to Andrologists due to the great number of male infertility patients referred to assisted reproductive technology （ART） treatments. The evidence is growing that laboratory air quality is paramount importance for improved IVF outcome.

关键词： @@

Comprehensive Survey and Critical Evaluation of the Performance of State-of-the-art LED Drivers for Lighting Systems

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 Journal of Electrical Engineering 2021年第2期7卷 21-36页

作者： Fernando bento Antonio J.Marques Cardoso CISE-Electromechatronic Systems Research Centre University of Beira InteriorCovilhã6201-001Portugal

The adoption of light-emitting diodes(LEDs)for lighting applications is becoming increasingly relevant as this recent technology is *** the recent uptake of LED lighting technologies for distinctive end-uses,the research community has also committed to the development of an ever-increasing range of power electronic converters that are suitable for yielding maximum quality lighting,high efficiency,and long *** one of the most recent and promising technologies of the moment,it is vital to fully understand the performance and merits of each state-of-the-art LED lighting ***,this paper compiles essential information about a broad range of state-of-the-art LED lighting systems,aiming to compare their performances in terms of *** on the comparative analysis,the main merits and drawbacks of each LED lighting system architecture are ***,a detailed evaluation of the performance of a particular LED lighting system and the corresponding control strategy is developed,thereby enabling a clear view of the evolution of the performance of the system as a function of parameters like supply voltage and number of driver channels.

关键词： Efficiency analysis LED lighting AC-DC converters DC-DC converters

A Comprehensive Survey on Fault Diagnosis and Fault Tolerance of DC-DC Converters

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 Journal of Electrical Engineering 2018年第3期4卷 1-12页

作者： Fernando bento Antonio J.Marques Cardoso CISE-Electromechatronic Systems Research Centre Universidade da Beira InteriorCalcada Fonte do LameiroP-6201-001 CovilhaPortugal Department of Electromechanical Engineering Universidade da Beira InteriorCalcada Fonte do LameiroP-6201-001 CovilhaPortugal

DC-DC converters are becoming more commonly used in power conversion solutions for energy management purposes,being employed in an ever-increasing range of DC-based applications,such as LED lighting,electric vehicles,energy storage solutions,and consumer electronics(laptops,smartphones,etc.).In this context,efficiency and reliability are *** research efforts made in improving reliability of DC-DC converters are still quite narrow and ***,DC-DC converters take the shape of an endless number of topologies,with different functionalities and operation principles,thus complicating the task of improving reliability of all forms of DC-DC ***,compiling the information about the main failure modes,corresponding fault diagnostic algorithms and fault tolerance strategies developed so far,in a single document,becomes increasingly ***,this paper presents an up-to-date review of the recent achievements attained regarding the improvement of availability and reliability of DC-DC converters.

关键词： DC-DC converters fault diagnosis fault tolerance reliability

An innovative approach for integrated airline network and aircraft family optimization

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 Journal of Aeronautics 2020年第2期33卷 634-663页

作者： JoséALEXANDRE T.G.FREGNANI bento S.DE MATTOS JoséA.HERNANDES Department of Aeronautical Engineering Technological Institute of Aeronautics12228-900 Sao Jose dos CamposBrazil

The determination of optimal aerial transport networks and their associated flight frequencies is crucial for the strategic planning of airlines,as well as for carrying out market research,to establish target markets,and for aircraft and crew *** addition,optimum airplane types for the selected networks are crucial to improve revenue and to provide reduced operating *** present study proposes an innovative approach to determine the optimal aerial transport network simultaneously with the determination of the optimum fleet for that network,composed of three types of airplanes(network and vehicle integrated design).The network profit is *** passenger’s demands between the airports are determined via a gravitational *** embedded linear programming solution is responsible for obtaining potential optimal network *** optimum fleet combination is determined from a database of candidate aircraft designs via genetic algorithm.A truly realistic airplane representation is made possible thanks to accurate surrogate models for engine and aerodynamics is *** accurate engine deck encompassing a compression map and an innovative engine weight calculation besides an aerodynamical artificial neural network module enable a high degree of accuracy for the mission *** proposed methodology is applied to obtain the optimum network comprised of twenty main Brazilian airports and corresponding fleet.

关键词： Air transport Aircraft design Airline economics Airline network optimization Multidisciplinary design optimization

Creativity and innovation:A contribution of behavioral economics

在线全文

学校读者我要写书评

暂无评论

International Journal of Innovation Studies 2019年第1期3卷 12-21页

作者： Jose Chavaglia Neto Jose Antonio Filipe Antonio bento Caleiro Fundacao Getulio Vargas(EESP-FGV) Itapeva StreetSao Paulo01332-000Brazil Instituto Universitario de Lisboa(ISCTE-IUL) Information SciencesTechnologies and Architecture Research Center(ISTAR-IUL)Business Research Unit-IUL(BRU-IUL)Lisbon1649-026Portugal Departamento de Economia Universidade de EvoraLargo Dos Colegiais2Evora7002-554Portugal

Innovation in products and services is seen by scholars,by specialized media in management,and by some managers as the main currency in modern *** is because it allows high average market profits,fame for innovators,or brand growth,for ***,in practice,most managers still treat innovation as a secondary issue on their *** problem results from the inability of market professionals to analyze people inside and outside their *** is not possible to develop innovative products in a systematic way without treating this point ***,in this process,creativity is a necessary,but not necessarily sufficient,condition to be fulfilled and requires behavioral *** this context,it is believed that behavioral economics can make a sufficient contribution in the form of an analytical marketing tool by offering an analysis closer to human beings'reality,and,thus,allow a better understanding of people's behavior in the process of innovation in the market.

关键词： Behavioral economics Neuroeconomics Innovation Creativity

Associations between cardiorespiratory fitness,physical activity, intraindividual variability in behavior, and cingulate cortex in younger adults

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Sport and Health Science 2019年第4期8卷 315-324页

作者： Joao bento-Torres Natali Valim Oliver bento-Torres Chelsea M.Stillman George A.Grove Jr Haiqing Huang Fatma Uyar Jennifer C.Watt Mariegold E.Wollam Kirk I.Erickson Institute of Biological Science Federal University of ParaBelemPara 66075-110Brazil College of Physical Therapy and Occupational Therapy Federal University of ParaBelemPara 66075-110Brazil Department of Psychiatry University of Pittsburgh Medical SchoolPittsburghPA 15260USA Department of Psychology University of PittsburghPittsburghPA 15260USA

*** levels of cardiorespiratory fitness(CRF)and greater amounts of physical activity have been associated with lower intraindividual variability(IIV)in executive function in children and older *** the present study,we examined whether CRF,measured as maximal oxygen uptake(VO2max),and daily volume of moderate-to-vigorous intensity physical activity(MVPA)were associated with IIV of reaction time during performance of the incongruent condition of the Stroop task in younger ***,we examined whether the thickness of the cingulate cortex was associated with regulating variability in reaction time performance in the context of CRF or physical ***:CRF(measured as VO2max),accelerometry-measured MVPA,Stroop performance,and thickness of the rostral anterior cingulate cortex(rACC)derived from magnetic resonance imaging data were collected in 48 younger adults(age=24.58±4.95 years,mean±SD).Multiple regression was used to test associations between IIV during the Stroop task and CRF,MVPA,and rACC *** was tested using maximum likelihood estimation with ***:Consistent with our predictions,higher VO2max was associated with greater rACC thickness for the right hemisphere and greater daily amounts of MVPA were associated with greater rACC thickness for both the left and right *** thickness of the right rACC was associated with lower IIV for the incongruent condition of the Stroop *** and MVPA were not directly associated with ***,we did find that IIV and both CRF and MVPA were indirectly associated via the thickness of the right ***:These results indicate that higher CRF and greater daily volume of MVPA may be associated with lower IIV during the Stroop task via structural integrity of the *** controlled trials of MVPA would provide crucial information about the causal relations between these variables.

关键词： Accelerometry Aerobic fitness Cognition Executive control Within-person fluctuations

The first high spatial resolution multi-scale daily SPI and SPEI raster dataset for drought monitoring and evaluating over China from 1979 to 2018

在线全文

学校读者我要写书评

暂无评论

Big Earth Data 2023年第3期7卷 860-885页

作者： Rongrong Zhang Virgílio A.bento Junyu Qi Feng Xu Jianjun Wu Jianxiu Qiu Jianwei Li Wei Shui Qianfeng Wang Fujian Provincial Key Laboratory of Remote Sensing of Soil Erosion and Disaster Protection/College of Environmental&Safety Engineering Fuzhou UniversityFuzhouChina Instituto Dom Luiz Faculdade de CiênciasUniversidade de LisboaLisboaPortugal Earth System Science Interdisciplinary Center University of MarylandCollege ParkMDUSA State Key Laboratory of Earth Surface Processes and Resource Ecology/Faculty of Geographical Science Beijing Normal UniversityBeijingChina Guangdong Provincial Key Laboratory of Urbanization and Geo-simulation School of Geography and PlanningSun Yat-sen UniversityGuangzhouChina College of Physics and Information Engineering Fuzhou UniversityFuzhouChina Key Lab of Spatial Data Mining&Information Sharing Ministry of Education of ChinaFuzhouChina

Standardized Precipitation Index(SPI)and Standardized Precipitation Evapotranspiration Index(SPEI),traditionally derived at a monthly scale,are widely used drought *** overcome temporalresolution limitations,we have previously developed and published a well-validated daily SPI/SPEI in situ *** having a high temporal resolution,this in situ dataset presents low spatial resolution due to the scarcity of ***,based on the China Meteorological Forcing Dataset,which is composed of data from more than 1,000 ground-based observation sites and multiple remote sensing grid meteorological dataset,we present the first high spatiotemporal-resolution daily SPI/SPEI raster datasets over *** spans from 1979 to 2018,with a spatial resolution of 0.1°×0.1°,a temporal resolution of 1-day,and the timescales of 30-,90-,and *** show that the spatial distributions of drought event characteristics detected by the daily SPI/SPEI are consistent with the monthly SPI/*** correlation between the daily value of the 12-month scale and the monthly value of SPI/SPEI is the strongest,with linear correlation,Nash-Sutcliffe coefficient,and normalized root mean square error of 0.98,0.97,and 0.04,*** daily SPI/SPEI is shown to be more sensitive to flash drought than the monthly SPI/*** improved SPI/SPEI shows high accuracy and credibility,presenting enhanced results when compared to the monthly SPI/*** total data volume is up to 150 GB,compressed to 91 GB in Network Common Data Form(NetCDF).It can be available from Figshare(https://***/10.6084/***.c.5823533)and ScienceDB(https://***/10.57760/sciencedb.j00076.00103).

关键词： Drought index climate change climatic disaster Generalized Extreme Value