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Phenolic Profiles and Polyphenol Oxidase (PPO) Gene Expression of red Clover (Trifolium pratense) Selected for Decreased Postharvest Browning

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American Journal of Plant Sciences 2016年第10期7卷 1478-1489页

作者： Isabelle A. Kagan randy D. Dinkins Norman l. taylor USDA-ArS Forage-Animal Production Research Unit Agricultural Science Center North University of Kentucky Lexington KY USA Department of Plant and Soil Sciences University of Kentucky Lexington KY USA

red clover (Trifolium pratense l.) is a legume forage abundant in phenolic compounds. It tends to brown when cut for hay, due to oxidation of phenolic compounds catalyzed by polyphenol oxidase (PPO), and subsequent binding to proteins. Selecting for a greener hay may provide information about the relationship of browning, PPO, and phenolics to each other. The red clover Kenland cultivar was selected over eight breeding cycles for decreased browning after being cut and dried 48 h in the field. Expression of PPO1 and PPO3, in Kenland and three of the eight cycles, was compared by real-time quantitative PCr. Phenolic compounds in Kenland and Cycle 8, collected 0, 24, and 48 h after cutting, were quantified by high-performance liquid chromatography (HPlC). Visual browning scores decreased 12% between Kenland and Cycle 8 (P = 0.02). PPO1 and PPO3 gene expression were not affected by selection. Clovamide decreased 26% in Cycle 8 relative to Kenland (P = 0.016). Sissotrin decreased 10% in Cycle 8 (P = 0.043). Neither total formononetin nor total biochanin A was affected by selection (P = 0.63 and 0.45, respectively). These results suggest that when selecting clover for decreased postharvest browning, a decrease occurs in a phenolic compound that can bind protein independently of PPO. However, PPO1 and PPO3 gene expression, and the major red clover isoflavones, are minimally affected.

关键词： Trifolium pratense l. Browning PPO Clovamide Isoflavone HPlC

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国际古植物学1989年研究进展

地球科学进展 1990年第5期5卷 87-89页

作者： E.l.taylor T.N.taylor 刘裕生

古植物学是一个日新月异发展着的学科。每年,都有一些新的方法问世,它们结合地质学和生物学方法来研究地史时期植物的生活。其研究广度可以从1989年7月在美国首都华盛顿召开的第28届国际地质大会上明显看出。古植物学家们报告了他们关... 详细信息

古植物学是一个日新月异发展着的学科。每年,都有一些新的方法问世,它们结合地质学和生物学方法来研究地史时期植物的生活。其研究广度可以从1989年7月在美国首都华盛顿召开的第28届国际地质大会上明显看出。古植物学家们报告了他们关于“古气候”、“前寒武纪/寒武纪的过渡”、“泥炭和煤的来源”、“适应辐射”、“埋藏过程”、“特异埋藏”及南极地质等方面的研究成果;关于晚石炭世植物群的生物地理方面的文章也很多。由Gastaldo(1989)编辑的《植物埋藏学——有机沉积过程》

关键词：古植物学研究进展国际

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一种高效能的混合型四节点平面单元

北京农业工程大学学报 1983年第3期 66-77页

作者：李明瑞 r.l.taylor 加州大学土木工程系

本文基于 reissner 变分原理,用混合法思想提出一种高效能的四节点平面单元,并求出其显式积分,比之常用的 Q—4单元有精度高,计算时间省的优点。本单元定名为 r—4单元。

关键词：局部坐标系精度矩阵显式积分形心大地坐标系数学分析断面几何性质高效能

Adult female syphilis prevalence,congenital syphilis case incidence and adverse birth outcomes,Mongolia 2000e2016:Estimates using the Spectrum STI tool

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Infectious Disease Modelling 2018年第1期3卷 13-22页

作者： Erdenetungalag Enkhbat Eline l.Korenromp Jugderjav Badrakh Setsen Zayasaikhan Purevsuren Baya Enkhjargal Orgiokhuu Narantuya Jadambaa Sergelen Munkhbaatar Delgermaa Khishigjargal Narantuya Khad Guy Mahiane Naoko Ishikawa Davaalkham Jagdagsuren Melanie M.taylor Mongolia National Centre for Communicable Disease AIDS/STI Surveillance and Research DepartmentUlaanbaatar210648Bayanzurkh DistrictNam-Yan-Ju StreetMongolia Avenir Health GenevaSwitzerland1 route de Morillons/150 Route de Ferney(WCCOffice 164)PO Box 2100CH-1211 Geneva 2Switzerland World Health Organization Post Box 663Ulaanbaatar-13Mongolia Mongolia Global Fund Supported Project on AIDS and TB Peace Avenue 13/3Sukhbaatar DistrictUlaanbaatarMongolia Mongolia Center for Health Development Enkhtaivan Street-13bSukhbaatar DistrictUlaanbaatarMongolia Avenir Health 655 Winding Brook DriveGlastonburyCTCT-06033USA World Health Organization Western Pacific Regional OfficePO Box 2932(United Nations Avenue)1000 ManilaPhilippines World Health Organization Department of Reproductive Health and Research8 Avenue Appia(L152)1211 GenevaSwitzerland Centers for Disease Control and Prevention Atlanta GAUSA

Introduction:Mongolia's health ministry prioritizes control of Sexually Transmitted Infections,including syphilis screening and treatment in antenatal care(ANC).Methods:Adult syphilis prevalence trends were fitted using the Spectrum-STI estimation tool,using data from ANC surveys and routine screening over 1997e2016.Estimates were combined with programmatic data to estimate numbers of treated and untreated pregnant women with syphilis and associated incidence congenital syphilis(CS)and CS-attributable adverse birth outcomes(ABO),which we compared with CS case reports.results:Syphilis prevalence in pregnant women was estimated at 1.7%in 2000 and 3.0%in 2016.We estimated 652 CS cases,of which 410 ABO,in 2016.Far l.rger,annually increasing numbers of CS cases and ABO were estimated to have been prevented:1654 cases,of which 789 ABO in 2016thanks to increasing coverages of ANC(99%in 2016),ANC-based screening(97%in 2016)and treatment of women diagnosed(81%in 2016).The 42 CS cases reported nationally over 2016(liveborn infants only)represented 27%of liveborn infants with clinical CS,but only 7%of estimated CS cases among women found syphilis-infected in ANC,and 6%of all estimated CS cases including those born to women with undiagnosed syphilis.Discussion/Conclusion:Mongolia's ANC-based syphilis screening program is reducing CS,but maternal prevalence remains high.To eliminate CS(target:r 100,000 live births),Mongolia should strengthen ANC services,limiting losses during referral for treatment,and under-diagnosis of CS including still-births and neonatal deaths,and expand syphilis screening and prevention programs.

关键词： Syphilis Congenital syphilis Surveillance Screening Antenatal care Epidemiological modelling

MODElING POTENTIAl IMPACTS OF ClIMATE CHANGE ON INSECTS IN NOrTH AMErICAN FOrEST ECOSYSTEMS: A BASIC PHENOlOGICAl APPrOACH

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MODELING POTENTIAL IMPACTS OF CLIMATE CHANGE ON INSECTS IN N...

Survival of Juvenile <i>Acer grandidentatum</i>Nutt. (Bigtooth Maple, Aceraceae) in Central Texas Woodlands

The ⅩⅤth International Plant Protection Congress

作者： J.réGNIèrE J.A.lOGAN A.l.CArrOll l.SAFrANYIK S.W.taylor Natural.resources Canada Canadian Forest Service Quebec City QC Canada G1V 4C7

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American Journal of Plant Sciences 2020年第3期11卷 413-425页

作者： O. W. Van Auken D. l. taylor

Populations of Acer grandidentatum Nutt. (Bigtooth maple, Aceraceae = Sapindaceae) in central Texas are mostly found in isolated, deep, relatively remote, limestone canyons. Acer grandidentatum is found with a few other mostly deciduous species. recruitment of juveniles has been reported to be lacking. One population of A. grandidentatum juveniles was found in a limestone canyon in a State Natural Area in Central Texas. Fifty juveniles were located. Wire enclosures were placed around half of the seedlings with half left in the open. In an adjacent canyon, 50 juvenile seedlings were planted in a simil.r habitat with adult A. grandidentatum trees nearby. Half were in enclosures and half in the open. Plant survival was followed for four growing seasons until November 2019. At the end of that time when survivals were compared between plants in enclosures and those in the open in both canyon communities, there was a significant difference in survival in both communities (χ2, P rvival in the planted population in enclosures was 92% with 52% in the open. In the natural population in enclosures 68% survived, with 32% survivals in the open. When population extinction was compared, extinction for planted juveniles in enclosures using linear regression was 60.5 yrs and it was 11.9 yrs in the open. For native juveniles, it was 12.6 yrs in enclosures and 5.9 yrs in the open. The cause of most mortalities in the open seemed to be herbivory by white-tailed deer (Odocoleus virginianus).

关键词： Survival Mortality Populations Edwards Plateau rare Plants Seedlings Woodlands Dynamics

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结构主义宏观经济学

Decomposing the drivers of residential space cooling energy consumption in EU-28 countries using a panel data approach

1990年

作者： lance·泰勒(lance taylor)

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能源与人工环境(英文)

能源与人工环境(英文) 2020年第4期1卷 432-442页

作者： Andreas Andreou John Barrett Peter G.taylor Paul E.Brockway Zia Wadud Sustainability research Institute School of Earth and EnvironmentUniversity of LeedsLeedsLS29JTUK low Carbon Energy research Group School of Chemical and Process EngineeringUniversity of LeedsLeedsLS29JTUK Spatial Modelling and Dynamics research Group Institute for Transport StudiesUniversity of LeedsLeedsLS29JTUK

While space cooling currently represents less than 1%of final energy use in the residential sector of the Euro-pean Union(EU-28),it was the fastest growing end-use during the 2000-15 period with a mean annual growth rate of 6%per year.Currently,little is known about factors which have driven regional air-conditioning(AC)energy consumption over time,since the literature is limited to cross-sectional studies that lack differentiation between climatic and non-climatic influences.Future projections for the EU’s electricity sector may therefore neglect the potential implications of rapidly growing AC demand.We develop a novel decomposition framework,which breaks down residential space cooling energy consumption in EU-28 countries into the effect of different components from 2000 to 2015.Decomposition is extended to panel data models identifying specific drivers of space cooling’s climate-sensitive components.Finally,we expl.re scenarios of residential AC energy consumption up to 2050 and evaluate their impact on summer time peak loads.AC diffusion was found to be the key driver of space cooling energy consumption,but this effect was partly counterbalanced by efficiency gains.While weather influences AC equipment ownership rate in EU-28 households,personal income has a l.rger marginal effect.In baseline scenarios,AC diffusion saturates by 2050,while modestly increasing sectoral final energy use.Still,our range of scenario values for space cooling energy consumption in 2050 exceed the majority of those originat-ing from recently published projections.In a future renewables-driven electricity system,energy security risks may emerge from a scenario of fast AC up-take in new and renovated buildings,especially for colder European countries where modelled peak cooling electricity demand is shown to outgrow the projected expansion of sol.r capacity.These findings have important implications for the EU’s strategy to decarbonise energy supply.

关键词： Space cooling AC diffusion Decomposition analysis Panel data model Peak demand

Dislocation ordering and texture strengthening of naturally aged Al-Cu-Mg alloy

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Journal of Materials Science & Technology 2022年第23期118卷 1-14页

作者： F.liu Z.Y.liu G.Y.He l.N.Ou School of Materials Science and Engineering Central South UniversityChangsha 410083China Key laboratory of Nonferrous Metal Materials Science and Engineering Ministry of EducationCentral South UniversityChangsha 410083China National Key laboratory of Science and Technology on High-Strength Structural Materials Central South UniversityChangsha 410083China

Stability of grain structure,dislocation ordering and strengthening mechanisms of the naturally aged AlCu-Mg alloy after solution treatment are investigated by using optical microscope(OM),scanning electron microscope(SEM),electron back-scattered diffraction(EBSD),X-ray diffraction(XrD) and transmission electron microscope(TEM).results show that {100},{100},{110} and {110}slip systems can be activated after solution treatment,which can promote the formation of {110}Goss texture.The combination effect of T-Al_(20)Cu_(2) Mn_(3) phase and Goss-oriented grains with l.rge taylor factor makes the solution-treated alloys display excellent stability of grain structure.The enhanced yield strength of the alloy is ascribed to grain-refine strengthening,dispersed particles strengthening,dislocation strengthening and texture strengthening.The coarsening of the second phase is responsible for softening of the alloy after annealing at 400 ℃+solution treatment at 475 ℃.

关键词： Al-Cu-Mg alloy Dislocation ordering Goss texture Grain structure stability Texture strengthening

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