检索结果-南通市图书馆

measurement,associations,patterns,and promotion:Unveiling vital areas in physical activity epidemiology

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 2024年第5期13卷 605-607页

作者： Kara m.whitaker Guest editor michael J.Lamonte Department of Health&Human Physiology University of IowaIowa CityIA 52242USA Department of Epidemiology and Environmental Health University of BuffaloBuffaloNY 14214 USA

Physical activity(PA)epidemiology first emerged as a new field of study around the 1950s with publication of seminal investigations on London civil servants1 and has continued to evolve as a scientific discipline to present *** subdiscipline of epidemiology studies the frequencies,distributions,and dynamics of PA and its impact on human health,morbidity,and *** over the past 75 years has demonstrated numerous health benefits of *** on these research findings,the World Health Organization recommends adults aged 18-64 years engage in at least 150-300 min of moderate-intensity aerobic PA per week,or at least 75-150 min of vigorous-intensity aerobic PA per week,or a combination of both intensities.

关键词： epidemiology promotion continued

A roadmap for research in octoploid strawberry

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

Horticulture Research 2020年第1期7卷 2300-2316页

作者： vance m.whitaker Steven J.Knapp michael A.Hardigan Patrick P.Edger Janet P.Slovin Nahla V.Bassil Timo Hytönen Kathryn K.mackenzie Seonghee Lee Sook Jung Dorrie main Christopher R.Barbey Sujeet Verma University of Florida Institute of Food and Agricultural SciencesGulf Coast Research and Education CenterWimaumaFlorida 33598USA Department of Plant Sciences University of CaliforniaDavisCA 95616USA Department of Horticulture Michigan State UniversityEast LansingMI 48824USA USDAARS Genetic Improvement of Fruits and Vegetables Laboratory BeltsvilleMA 20705USA USDA-ARS National Clonal Germplasm Repository CorvallisOR 97333USA Department of Agricultural Sciences Viikki Plant Science CentreUniversity of HelsinkiHelsinki 00790Finland Organismal and Evolutionary Biology Research Programme Faculty of Biological and Environmental SciencesViikki Plant Science CentreUniversity of HelsinkiHelsinki 00790Finland NIAB EmR Kent ME196BJUK Department of Horticulture Washington State UniversityPullmanWA 99164USA

The cultivated strawberry(Fragaria×ananassa)is an allo-octoploid species,originating nearly 300 years ago from wild progenitors from the *** that time the strawberry has become the most widely cultivated fruit crop in the world,universally appealing due to its sensory qualities and health *** recent publication of the first highquality chromosome-scale octoploid strawberry genome(***)is enabling rapid advances in genetics,stimulating scientific debate and provoking new research *** this forward-looking review we propose avenues of research toward new biological insights and applications to *** these are the origins of the genome,characterization of genetic variants,and big data approaches to *** areas of research in molecular biology will include the control of flowering,fruit development,fruit quality,and plant–pathogen *** order to realize this potential as a global community,investments in genome resources must be continually augmented.

关键词： straw cultivated looking

Evolution of the mLO gene families in octoploid strawberry(Fragaria×ananassa)and progenitor diploid species identified potential genes for strawberry powdery mildew resistance

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Horticulture Research 2021年第1期8卷 1969-1985页

作者： Ronald R.Tapia Christopher R.Barbey Saket Chandra Kevin m.Folta vance m.whitaker Seonghee Lee Department of Horticultural Sciences University of FloridaIFAS Gulf Coast Research and Education CenterWimaumaFL 33598USA Department of Horticultural Sciences University of Florida1301 Fifield HallPO Box 110690GainesvilleFL 32611USA

Powdery mildew(Pm)caused by Podosphaera aphanis is a major fungal disease of cultivated *** Resistance Locus O(mLO)is a gene family described for having conserved seven-transmembrane *** loss-of-function in specific mLO genes can confer durable and broad resistance against Pm ***,the genomic structure and potential role of mLO genes for Pm resistance have not been characterized yet in the octoploid cultivated *** the present study,mLO gene families were characterized in four diploid progenitor species(Fragaria vesca,***,***,and ***)and octoploid cultivated(Fragaria×ananassa)strawberry,and potential sources of mLO-mediated susceptibility were *** mLO sequences were identified in *** and 68 identified in F.×*** analysis divided diploid and octoploid strawberry mLO genes into eight different clades,in which three FvemLO(mLO10,mLO17,and mLO20)and their twelve orthologs of FamLO were grouped together with functionally characterized mLO genes conferring Pm *** number variations revealed differences in mLO composition among homoeologous chromosomes,supporting the distinct origin of each subgenome during the evolution of octoploid *** genomic sequence and structural variations in candidate FamLO genes revealed their potential role associated with genetic controls and functionality in strawberry against Pm ***,the gene expression profiling and RNAi silencing of putative FamLO genes in response to the pathogen indicate the function in Pm *** results are a critical first step in understanding the function of strawberry mLO genes and will facilitate further genetic studies of Pm resistance in cultivated strawberry.

关键词： straw mLO Fragaria

Strawberry sweetness and consumer preference are enhanced by specific volatile compounds

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Horticulture Research 2021年第1期8卷 870-884页

作者： Zhen Fan Tomas Hasing Timothy S.Johnson Drake m.Garner michael L.Schwieterman Christopher R.Barbey Thomas A.Colquhoun Charles A.Sims marcio F.R.Resende vance m.whitaker Horticultural Sciences Department University of FloridaIFAS Gulf Coast Research and Education CenterWimaumaFLUSA Elo Life Systems DurhamNCUSA Department of Environmental Horticulture and Plant Innovation Center Institute of Food and Agricultural SciencesUniversity of FloridaGainesvilleFLUSA Plenty Unlimited Inc.South San FranciscoCA 94080USA Food Science and Human Nutrition Department University of FloridaGainesvilleFLUSA Horticultural Sciences Department University of FloridaGainesvilleFLUSA

Breeding crops for improved flavor is challenging due to the high cost of sensory evaluation and the difficulty of connecting sensory experience to chemical *** main goal of this study was to identify the chemical drivers of sweetness and consumer liking for fresh strawberries(Fragaria×ananassa).Fruit of 148 strawberry samples from cultivars and breeding selections were grown and harvested over seven years and were subjected to both sensory and chemical *** panel consisted of at least 100 consumers,resulting in more than 15,000 sensory data points per *** sugars,two acids and 113 volatile compounds were *** liking was highly associated with sweetness intensity,texture liking,and flavor intensity,but not sourness *** least square analyses revealed 20 volatile compounds that increased sweetness perception independently of sugars;18 volatiles that increased liking independently of sugars;and 15 volatile compounds that had positive effects on *** learning-based predictive models including sugars,acids,and volatiles explained at least 25%more variation in sweetness and liking than models accounting for sugars and acids *** compounds such asγ-dodecalactone;5-hepten-2-one,6-methyl;and multiple medium-chain fatty acid esters may serve as targets for breeding or quality control attributes for strawberry products.A genetic association study identified two loci controlling ester production,both on linkage group 6 ***-segregating makers in these regions can be used for increasing multiple esters *** study demonstrates a paradigm for improvement of fruit sweetness and flavor in which consumers drive the identification of the most important chemical targets,which in turn drives the discovery of genetic targets for marker-assisted breeding.

关键词： volatile sugar esters

Correction: Strawberry sweetness and consumer preference are enhanced by specific volatile compounds

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Horticulture Research 2021年第1期8卷 3067-3067页

作者： Zhen Fan Tomas Hasing Timothy S.Johnson Drake m.Garner michael L.Schwieterman Christopher R.Barbey Thomas A.Colquhoun Charles A.Sims marcio F.R.Resende vance m.whitaker Horticultural Sciences Department University of Florida IFAS Gulf Coast Research and Education Center Wimauma FL USA Elo Life Systems Durham NC USA Department of Environmental Horticulture and Plant Innovation Center Institute of Food and Agricultural Sciences University of Florida Gainesville FL USA Plenty Unlimited Inc. South San Francisco CA 94080 USA Food Science and Human Nutrition Department University of Florida Gainesville FL USA Horticultural Sciences Department University of Florida Gainesville FL USA

Since the publication of this article 1,the corresponding author discovered that an additional researcher contributed data and should be included as an *** ***(Plenty Unlimited,Inc.,South San Francisco,CA 94080,US)has... 详细信息

关键词： volatile specific compounds

An experimental validation of genomic selection in octoploid strawberry

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Horticulture Research 2017年第1期4卷 380-388页

作者： Salvador A Gezan Luis F Osorio Sujeet Verma vance m.whitaker School of Forest Resources and Conservation University of Florida363 Newins-Ziegler HallPO Box 110410Gainesville32611-0410FLUSA Gulf Coast Research and Education Center University of Florida14625 CR 672Wimauma33598FLUSA

The primary goal of genomic selection is to increase genetic gains for complex traits by predicting performance of individuals for which phenotypic data are not *** objective of this study was to experimentally evaluate the potential of genomic selection in strawberry breeding and to define a strategy for its *** clonally replicated field trials,two in each of 2 years comprised of a total of 1628 individuals,were established in 2013–2014 and 2014–*** complex yield and fruit quality traits with moderate to low heritability were assessed in each ***-density genotyping was performed with the Affymetrix Axiom IStraw90 single-nucleotide polymorphism array,and 17479 polymorphic markers were chosen for *** methods were compared,including Genomic BLUP,Bayes B,Bayes C,Bayesian LASSO Regression,Bayesian Ridge Regression and Reproducing Kernel Hilbert ***-validation within training populations resulted in higher values than for true validations across *** true validations,Bayes B gave the highest predictive abilities on average and also the highest selection efficiencies,particularly for yield traits that were the lowest heritability *** efficiencies using Bayes B for parent selection ranged from 74%for average fruit weight to 34%for early marketable yield.A breeding strategy is proposed in which advanced selection trials are utilized as training populations and in which genomic selection can reduce the breeding cycle from 3 to 2 years for a subset of untested parents based on their predicted genomic breeding values.

关键词： breeding straw traits

基于嵌入式网格的裂缝性致密油储层压裂生产一体化数值模拟方法

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

计算物理 2024年

作者：徐世乾郭建春 Younis m.Rami 卢聪 Texas A&m University Harold vance Department of Petroleum Engineering College Station 西南石油大学油气藏地质及开发工程国家重点实验室

有效的一体化模拟裂缝性致密油储层压裂生产过程是评价压裂设计的关键之一。为此，基于嵌入式网格的基质裂缝全域空间流固耦合数值模拟方法，进一步考虑天然裂缝影响下裂缝动态扩展、低速非线性渗流、基质与裂缝应力敏感，实现了裂缝性... 详细信息

有效的一体化模拟裂缝性致密油储层压裂生产过程是评价压裂设计的关键之一。为此，基于嵌入式网格的基质裂缝全域空间流固耦合数值模拟方法，进一步考虑天然裂缝影响下裂缝动态扩展、低速非线性渗流、基质与裂缝应力敏感，实现了裂缝性致密油储层压裂生产一体化多机理模拟。进而分析了天然裂缝、非线性渗流对裂缝扩展及生产动态的一体化影响规律。研究结果表明：模型可以在生产过程中任意时刻模拟压裂，为重复压裂、加密井的设计分析提供了有效工具。当基质岩石的抗拉强度由10.2 mPa降到2.3 mPa时，破碎带逐渐增大，滤失作用增加，导致主裂缝长度降低8%-9%，但可以增加累产油量17.5%至61.1%，影响作用显著且主要影响早期的日产油量。与启动压力梯度模型相比，低速非线性渗流可以更好地预测致密油生产动态。该方法为裂缝性致密油储层压裂生产一体化的动态预测、规律分析、工艺优化提供了高效工具。

关键词：致密油裂缝性储层流固耦合压裂生产一体化嵌入式网格

Clarifying sub-genomic positions of QTLs for flowering habit and fruit quality in U.S. strawberry (Fragaria×ananassa) breeding populations using pedigree-based QTL analysis

同方期刊数据库评论

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 2017年第1期4卷 85-93页

作者： Sujeet Verma Jason D Zurn Natalia Salinas megan m mathey Beatrice Denoyes James F Hancock Chad E Finn Nahla V Bassil vance m.whitaker IFAS/Department of Horticulture University of FloridaGulf Coast Research and Education Center14625 CR 672Wimauma33598FLUSA USDA-ARS National Clonal Germplasm Repository 33447 Peoria RoadCorvallis97333ORUSA Department of Horticulture Oregon State University4017 Agriculture and Life Sciences BuildingCorvallis97331ORUSA Department of Horticulture UMR 1332 Biologie du Fruit et PathologieINRAUniv.BordeauxVillenave d’OrnonF-33140France michigan State University East Lansing48824MIUSA USDA-ARS HCRU3420 NW Orchard AvenueCorvallis97330ORUSA

The cultivated strawberry(Fragaria×ananassa)is consumed worldwide for its flavor and nutritional *** analysis of commercially important traits in strawberry are important for the development of breeding methods and tools for this *** several quantitative trait loci(QTL)have been previously detected for fruit quality and flowering traits using low-density genetic maps,clarity on the sub-genomic locations of these QTLs was *** discoveries in allo-octoploid strawberry genomics led to the development of the IStraw90 single-nucleotide polymorphism(SNP)array,enabling high-density genetic maps and finer resolution QTL *** this study,breeder-specified traits were evaluated in the Eastern(michigan)and Western(Oregon)United States for a common set of breeding populations during 2 *** QTLs were validated for soluble solids content(SSC),fruit weight(FWT),pH and titratable acidity(TA)using a pedigree-based QTL analysis *** fruit quality,a QTL for SSC on linkage group(LG)6A,a QTL for FWT on LG 2BII,a QTL for pH on LG 4CII and two QTLs for TA on LGs 2A and 5B were *** addition,a large-effect QTL for flowering was detected at the distal end of LG 4A,coinciding with the FaPFRU *** haplotype analysis in the FaPFRU region indicated that the homozygous recessive genotype was highly predictive of seasonal *** probes in the FaPFRU region may help facilitate marker-assisted selection for this trait.

关键词： breeding straw Fragaria

Atypical clinical and pathological findings in a patient with isolated cortical vein thrombosis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2012年第31期7卷 2473-2479页

作者： Yan Ding vance Fredrickson Yicong Lin Yueshan Piao Xiangbo Wang Dehong Lu Cunjiang Li Department of Neurology Xuan wu Hospital Capital Medical University Beijing 100053 China Department of Neurological Surgery Wayne State University School of Medicine Detroit M148201 USA Department of Pathology Xuanwu Hospital Capital Medical University Beijing 100053 China

Isolated cortical vein thrombosis often produces a focal lesion. Because of the rapid development of collateral circulation, increased intracranial pressure has never been reported in a patient with isolated cortical vein thrombosis. The diagnosis of isolated cortical vein thrombosis is based mainly on mRI, catheter digital subtraction angiography, and histological findings, but may be challenging. We report a patient who presented with intermittent seizures and left-sided limb weakness. Her symptoms gradually progressed, and she eventually developed signs of increased intracranial pressure. Imaging studies showed a space-occupying lesion in the right frontal lobe of the brain. As we could not diagnose isolated cortical vein thrombosis based on the preoperative findings, surgical excision of the lesion was performed under general anesthesia. Histological examination showed destruction of the brain parenchyma with infiltration of macrophages, proliferation of reactive astrocytes and small vessels, and foci of hemorrhage. Further examination found that a number of small vessels in both the subarachnoid space and brain parenchyma were filled with thrombus, some of which was organized. Elastic fiber staining showed that the obstructed vessels were veins. We diagnosed isolated cortical vein thrombosis with atypical clinical features.

关键词： thrombosis cortical vein pathology infarction hemorrhage epilepsy hemiplegia edema increased intracranial pressure mRI CT neuroimaging neural regeneration