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植物生态学报 2007年第4期31卷 695-710页

作者： Jonathan M.Frantz Nilton N.cometti Marc w.van Iersel Bruce Bugbee USDA ARSApplication Technology Research Unit 2801 W.BancroftMail Stop 604ToledoOH 43606USA Escola Agrotécnica Federal de colatina Cx Postal 256CEP 29709-910 ColatinaESBrasil Department of Horticulture the University of GeorgiaAthensGA 30602-7273USA crop Physiology Laboratory Department of PlantsSoilsand BiometeorologyUtah State UniversityLoganUT 84322-4820USA

Aims changes in light and temperature are among the most common and most profound environmental perturbations. The independent effects of light and temperature on photosynthesis and respiration are well studied in single leaves, but are less well studied in whole plants. The short and long term influence of light and temperature on carbon use efficiency is also poorly understood, and is commonly modeled to remain constant over a wide range of conditions. we sought to determine the primary effects of changing light at two growth temperatures on photosynthesis, respiration, and their balance, as defined by carbon use efficiency. Methods we separated respiration into growth and maintenance components using whole-canopy gas-exchange in an elevated cO2 environment in a controlled environment, and supplemented that information with tissue analysis. Important findings Decreases in light level decreased carbon use efficiency through a reduction in the maintenance coefficient, increased the growth coefficient, and reduced partitioning of N in protein. Growth temperature did not significantly affect either maintenance or growth respiration coefficients, suggesting that long-term temperature responses can differ greatly from short-term observations.

关键词：番茄光照温度环境适应性二氧化碳碳素利用率遮阳棚

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Surface Microstructure characterization of Sol-gel Derived Porous TiO_2 Thin Films

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Rare Metals 2001年第3期20卷 157-163页

作者： Jiaguo Yu, Jimmy c. Yu, Bei cheng, A. S. K. Li, Pak Kan Tse 1) Department of chemistry, The chinese University of Hong Kong, Hong Kong, china 2) State Key Lab of Advanced Technology for Materials Synthesis and Processing, wuhan University of Technology, w chinese Univ Hong Kong Dept Chem Hong Kong Hong Kong Peoples R China wuhan Univ Technol State Key Lab Adv Technol Mat Synth & Proc Wuhan 430070 Peoples R China chinese Univ Hong Kong Dept Phys Hong Kong Hong Kong Peoples R China

Porous TiO2 thin films were prepared from alkoxide solutions with and without polyethylene glycol (PEG) by sol-get route on soda lime glass, and were characterized by atomic force microscopy (AFM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The results show that TiO2 film prepared from precursor solution without PEG is composed of spherical particles of about 100 nm and several nanometer mesoporous pores. with the increase of the amount of PEG added to the precursor solution, the diameter and the depth of the pores in the resultant films increas on the decomposition of PEG during heat-treatment, which lead to them increase of the surface roughness of the films. XRD and TEM results show that the single anatase phase is precipitated and there are some orientation effects in (101) direction.

关键词： sol-gel route porous TiO2 thin films surface microstructure characterization

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ELIMINATION OF ALTERNARIA SP. FROM cARROT （DAUcUS cAROTA L.） SEEDS BY DISINFEcTION wITH DILUTED LAcTIc AcID

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ELIMINATION OF ALTERNARIA SP. FROM CARROT （DAUCUS CAROTA L....

Association of types of diabetes and insulin dependency on birth outcomes

The ⅩⅤth International Plant Protection congress

作者： J.RUEEGG w.E.HELLER c.A.BAROFFIO Federal Research Station for Fruit-Growing Viticulture and Horticulture ch-8820 Waedenswil Switzerland Federal Research Station for Fruit-Growing Viticulture and Horticulture ch-8820 Waedenswil Switzerland Federal Research Station for Fruit-Growing Viticulture and Horticulture ch-8820 Waedenswil Switzerland

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world Journal of clinical cases 2022年第7期10卷 2147-2158页

作者： Pamela K Xaverius Steven w Howard Deborah Kiel Jerry E Thurman Ethan wankum catherine carter clairy Fang Romi carriere Department of Epidemiology and Biostatistics Saint Louis UniversitySt.LouisMO 63104United States Department of Health Management and Policy Saint Louis UniversitySt.LouisMO 63104United States Department of Endocrinology Diabetes and MetabolismSSM HealthSt.CharlesMO 63303United States Division of Epidemiology Institute for Health and EquityMedical College of WisconsinMilwaukeeWI 53226United States Department of Epidemiology Fielding School of Public HealthUniversity of CaliforniaLos AngelesCA 90095United States Population Health Sciences Institute Centre for Ageing and VitalityNewcastle UniversityNewcastle upon TyneEngland NE45PLUnited Kingdom

BAcKGROUND Diabetes rates among pregnant women in the United States have been increasing and are associated with adverse pregnancy *** To investigate differences in birth outcomes(preterm birth,macrosomia,and neonatal death)by diabetes *** cross-sectional design,using linked Missouri birth and death certificates(singleton births only),2010 to 2012(n=204057).Exposure was diabetes non-diabetic,pre-pregnancy diabetes-insulin dependent(PD-I),pre-pregnancy diabetes-non-insulin dependent(PD-NI),gestational diabetes-insulin dependent(GD-I),and gestational diabetes-non-insulin dependent(GD-NI).Outcomes included preterm birth,macrosomia,and infant *** included demographic characteristics,adequacy of prenatal care,body mass index,smoking,hypertension,and previous preterm *** and multivariate logistic regression assessed differences in outcomes by diabetes *** women with PD-I,PD-NI,and GD-I remained at a significantly increased odds for preterm birth(aOR 2.87,aOR 1.77,and aOR 1.73,respectively)and having a very large baby[macrosomia](aOR 3.01,aOR 2.12,and aOR 1.96,respectively);in reference to non-diabetic *** with GDNI were at a significantly increased risk for macrosomia(aOR1.53),decreased risk for their baby to die before their first birthday(aOR 0.41)and no difference in risk for preterm birth in reference to non-diabetic *** Diabetes is associated with the poor birth *** management of diabetes during pregnancy and healthy lifestyle behaviors before pregnancy can reduce the risk for diabetes and poor birth outcomes.

关键词： Epidemiology Pregnancy Health care delivery Birth outcomes Gestational diabetes Insulin

Timescales of Magamtic Processes from U-series Disequilibria

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Timescales of Magamtic Processes from U-series Disequilibria

International conference on continental Volcanism

作者： Kenneth w. w. Sims Department of Geology and Geophysics Woods Hole Oceanographic InstitutionWoods HoleMA 025423

＜正＞The formation and transport of basaltic magma in the mantle by adiabatic decompression can be characterized in terms of the velocity of the upwelling （solid） mantle, the rate of melting, the melt velocity, the dispersivity associated with melt migration, and the delay time, or storage time, of magma before eruption. Two of these parameters, the velocity of upwelling mantle and the corresponding melting rate, can be estimated from models coupled with thermodynamic data and

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信息系统外包:主要研究方向和未来发展趋势

清华大学学报（自然科学版） 2006年第Z1期46卷 923-929页

作者：黄伟陈宏民 Faizul Huq 俄亥俄大学商学院上海交通大学安泰经济管理学院

近年来,信息系统外包已经成为众多美国财富500强的公司和一些欧洲大型跨国公司(M Nc s)所关注的问题。一份最新的调查报告显示接近1/3的财富500强公司选择了印度作为它们外包业务的所在地。自1990年以来,印度政府一直致力于支持和推动... 详细信息

近年来,信息系统外包已经成为众多美国财富500强的公司和一些欧洲大型跨国公司(M Nc s)所关注的问题。一份最新的调查报告显示接近1/3的财富500强公司选择了印度作为它们外包业务的所在地。自1990年以来,印度政府一直致力于支持和推动信息系统外包产业的发展,并取得了巨大的成效。该文试通过对一些关键问题的讨论来探索这个重要的研究领域,这些问题包括:欧美公司为何将信息系统外包,印度怎样成为了全球信息系统外包的领导国家,中国的IT产业如何迎头赶上加入信息系统外包这个有利可图的市场的竞争。

关键词：信息系统外包离岸外包业务流程外包

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cucurbit Host Range of <i>Myrothecium roridum</i>Isolated from watermelon

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American Journal of Plant Sciences 2012年第3期3卷 353-359页

作者： wayne w. Fish Benny D. Bruton Thomas w. Popham USDA-ARS Stillwater USA wes watkins Agricultural Research Laboratory USDA-ARS Lane USA

In 2010, a foliar and stem-lesion disease that produced moderate to severe defoliation of watermelon was observed in the southern Great Plains. The disease was ultimately determined to be caused by Myrothecium roridum. The objective of this study was to compare the susceptibility of the vegetation and fruit of a broad range of commercially important cucurbits to three isolates obtained from these foliar lesions on watermelon. In greenhouse foliar inoculation experiments, cantaloupe, honeydew, cucumber, squash, and watermelon were susceptible to the fungus with cantaloupe and honeydew being the most susceptible and watermelon the most resistant. Furthermore, greenhouse inoculations supported earlier field observations as differential resistance was exhibited among the watermelon cultivars as well as the cucurbit types. All tested cucurbit fruit exhibited interior lesions when inoculated sub-epidermally with M. roridum isolates. However, natural infection of watermelon and pumpkin fruit has never been reported.

关键词： Myrothecium roridum watermelon Leaf and Stem Blight cucurbits

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镀锌板粗糙度和形貌的工业在线测量

冶金分析 2012年第1期32卷 29-33页

作者： Moreas G Bilstein w Tusset V 冶金研究中心先进技术部艾默帕有限公司冶金研究中心先进解决方案和传感器部

为了实现钢带表面尤其是粗糙度(Ra)的连续控制,进而改善钢带的表面性质,冶金研究中心(cRM)开发了一种表面粗糙度传感器(SRM),并在AMEPA实现了工业化。SRM用于测量不同工业线上整条钢带的粗糙度参数。选取的测量方法基于三角测量原理:一... 详细信息

为了实现钢带表面尤其是粗糙度(Ra)的连续控制,进而改善钢带的表面性质,冶金研究中心(cRM)开发了一种表面粗糙度传感器(SRM),并在AMEPA实现了工业化。SRM用于测量不同工业线上整条钢带的粗糙度参数。选取的测量方法基于三角测量原理:一条很细的线被投影到表面,然后通过分析线的变形确定凸现。本方法通过与机械触针参照测量法对比得到验证,SRM与触针的相关范围为+/-10%。SRM被安装于不同的线和各种产品上:连续退火线、伸线(抹油表面)、镀锌线(高反射表面)和轧辊间(高反射和粗糙表面)。同样涉及的还有涂层的、未涂层的、随即(例如EDT)和确定(例如EBT)表面等。最终得到一个用于测量形貌学的在线传感器。这个传感器不久前用于欧洲某些公司及其他线的日常生产,四个传感器安装于中国某公司的连续镀锌线以及连续退火线上,这有助于理解不同生产参数对钢带表面的影响,有可能实现过程的直接控制。

关键词：粗糙度形貌学在线连续工业

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改革与加入wTO对中国农业政策意味着什么

国外社会科学 2002年第2期 111-112页

作者： w.马丁霓〔美〕

Broadleaf weed control in Sunflower (<i>Helianthus annuus</i>) with Preemergence-Applied Pyroxasulfone with and without Sulfentrazone

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Agricultural Sciences 2015年第11期6卷 1309-1316页

作者： Seshadri S. Reddy Phillip w. Stahlman Patrick w. Geier Agricultural Research center Kansas State University Hays KS USA

A field study was conducted at two locations in Kansas, USA in 2011 and 2012 to test weed control efficacy and crop response to preemergence-applied pyroxasulfone alone and in combination with sulfentrazone in sunflower. Treatments included three rates of pyroxasulfone (100, 200 and 400 g·ha-1) applied alone and tank-mixed with sulfentrazone at 70, 140 and 280 g·ha-1. commercial standards sulfentrazone at 140 g·ha-1 + pendimethalin at 1390 g·ha-1 and sulfentrazone at 140 g·ha-1 + S-metolachlor at 1280 g·ha-1 were also included. Pyroxasulfone at 100 g·ha-1 controlled Palmer amaranth 87% at 3 weeks after application (wAA), but control decreased to 76% at 6 wAA. Increasing pyroxasulfone rate to ≥200 g·ha-1 or tank mixing with sulfentazone at 140 g·ha-1 provided ≥90% Palmer amaranth control for at least 6 wAA. Sulfentrazone alone at 70 g·ha-1 controlled Palmer amaranth 77% at 3 wAA, but control dropped to 69% at 6 wAA. Increasing sulfentrazone rate from 70 to 140 or 280 g·ha-1 increased control to >90% at 3 wAA, but did not maintain acceptable control at 6 wAA. Tank mixing sulfentrazone at 140 g·ha-1 with pendimethalin at 1390 g·ha-1 or S-metolachlor at 1280 g·ha-1 controlled Palmer amaranth ≥90 and 84% at 3 wAA and 6 wAA, respectively. The lowest rate of pyroxasulfone (100 g·ha-1) controlled kochia 98% and the control was complete with all other treatments. However, no treatment provided as much as 90% puncturevine control at 3 wAA and the control was commercially unacceptable (wAA. No treatment visibly injured sunflower anytime during the season or reduced sunflower plant population.

关键词： Pyroxasulfone Sulfentrazone Sunflower weed control Palmer Amaranth Kochia