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17篇 您的检索式:作者名="L.Scott"
    题名 作者 年代 出处 被引量
1Leaf size versus leaf numbertradeoffs in dioecious angiosperms显示文摘Aims We explore the possible role of leaf size/number trade-offs for the interpretation of leaf size dimorphism in dioecious plant species.Methods Total above-ground biomass(both male and female)for three herbaceous dioecious species and individual shoots(from both male and female plants)for three woody dioecious species were sampled to record individual leaf dry mass,number of leaves,dry mass of residual above-ground tissue(all remaining non-leaf biomass),number of flowers/inflorescences(for herbaceous species)and number of branches.Important Findings For two out of three woody species and two out of three herbaceous species examined,male plants produced smaller leaves but with higher leafing intensity—i.e.more leaves per unit of supporting(residual)shoot tissue or plant body mass—compared with females.Male and female plants,however,did not differ in shoot or plant body mass or branching intensity.We interpret these results as possible evidence for a dimorphic leaf deployment strategy that promotes both male and female function,respectively.In male plants,capacity as a pollen donor may be favored by selection for a broadly spaced floral display,hence favoring relatively high leafing intensity because this provides more numerous axillary meristems that can be deployed for flowering,thus requiring a relatively small leaf as a trade-off.In one herbaceous species,higher leafing intensity in males was associated with greater flower production than in females.In contrast,in female plants,selection favors a relatively large leaf,we propose,because this promotes greater capacity for localized photosynthate production,thus supporting the locally high energetic cost of axillary fruit and seed development,which in turn requires a relatively low leafing intensity as a trade-off.Stephanie L.Scott Lonnie W.Aarssen 2013Journal of Plant Ecology2013,6,1:2
2Nonsteroidal antiinflammatory drugs and uncoupling of mitochondrial oxidative phosphorylation显示文摘TaherMahmud Sue S.Rafi David L.Scott John M.Wrigglesworth IngvarBjarnason 2005Arthritis & Rheumatism2005,,12:1
3Muscle transcriptomic analyses in Angus cattle with divergent tenderness显示文摘Zhao C Tian F Yu Y Luo J Hu Q Bequene B J Baldwin Vi RL.Liu G Zan L.Scott Updike M 0,,:1
4Theory, methods and tools for determining environmental flows for riparian vegetation: riparian vegetation‐flow response guilds显示文摘DAVID M.MERRITT MICHAEL L.SCOTT N.LeROY POFF GREGOR T.AUBLE DAVID A.LYTLE 2009Freshwater Biology2009,,1:1
5The analysis of skin-to-stiffener debonding in composile aerospace structures显示文摘Jeff W.H.Yap Murray L.Scott Rodney S.Thomson er al 0,,:1
6同种异体肺和复合组织序贯移植大鼠模型研究显示文摘目的探讨大鼠同种异体序贯复合组织移植(SCTA)对先前实质器官移植免疫效应的影响。方法取WKY大鼠左肺原位移植到F344大鼠,应用Cuff技术分别吻合左肺动脉、左肺静脉及主支气管。术后对F344大鼠应用环孢素(CsA)5 mg/kg隔日皮下注射,共10 d;以呼吸频率检测移植左肺功能。肺移植后第11天,取Brown Norway大鼠腹部3 cm×3 cm肌皮瓣原位移植至F344大鼠,皮瓣吻合血管为股动脉和股静脉,皮瓣移植后停止应用免疫抑制剂。同种异体复合组织移植(CTA)10 d后,取移植皮瓣和肺组织行组织病理学检查,观察排斥反应。结果大鼠肺移植手术成功率90%,CTA手术成功率100%,SCTA成功率90%。移植肺的呼吸频率从移植10 d后(应用免疫抑制剂10 d)的(61±10)次/min增加到移植20 d后(停用免疫抑制剂10 d)的(75±15)次/min。移植肺显示出典型的急性免疫排斥反应,包括血管周围及肺组织内弥漫的淋巴细胞浸润。自体移植腹壁皮瓣病理组织学检查未发现免疫排斥反应,CTA术后皮瓣显示典型血管周围及皮瓣内弥漫的淋巴细胞浸润。结论 SCTA大鼠模型的建立对于实质器官移植后CTA及二次移植免疫抑制方案的研究具有重要意义。王守宝 张睿智 刘菲 罗旭松 杨军 L.Scott Levin 2011上海交通大学学报(医学版)2011,31,12:1
7Stratifying endomorphism algebras显示文摘E.CLINE B.PARSHALL L.SCOTT 0,,591:1
8Interest Rate Risk and Equity Values of Life Insurance Companies: A GARCH–M Model显示文摘ElijahBrewer James M.Carson ElyasElyasiani IqbalMansur William L.Scott 2007Journal of Risk and Insurance2007,,2:1
9Interest Rate Risk and Equity Values of Life Insurance Companies: A GARCH–M Model显示文摘ElijahBrewer James M.Carson ElyasElyasiani IqbalMansur William L.Scott 2007Journal of Risk and Insurance2007,,2:1
10Local and global methods in representations of Hecke algebras显示文摘This paper aims at developing a 'local-global' approach for various types of finite dimensional algebras, especially those related to Hecke algebras. The eventual intention is to apply the methods and applications developed here to the cross-characteristic representation theory of finite groups of Lie type. We first review the notions of quasi-hereditary and stratified algebras over a Noetherian commutative ring. We prove that many global properties of these algebras hold if and only if they hold locally at every prime ideal. When the commutative ring is sufficiently good, it is often sufficient to check just the prime ideals of height at most one. These methods are applied to construct certain generalized q-Schur algebras, proving they are often quasi-hereditary(the 'good' prime case) but always stratified. Finally, these results are used to prove a triangular decomposition matrix theorem for the modular representations of Hecke algebras at good primes. In the bad prime case, the generalized q-Schur algebras are at least stratified, and a block triangular analogue of the good prime case is proved, where the blocks correspond to Kazhdan-Lusztig cells.Jie Du Brian J.Parshall Leonard L.Scott 2018Science China Mathematics2018,61,2:1
11Purinergic signaling systems across comparative models of spinal cord injury显示文摘Within the last several decades,the scientific community has made substantial progress in elucidating the complex pathophysiology underlying spinal cord injury.However,despite the many advances using conventional mammalian models,both cellular and axonal regeneration following spinal cord injury have remained out of reach.In this sense,turning to non-mammalian,regenerative species presents a unique opportunity to identify pro-regenerative cues and chara cterize a spinal cord microenvironment permissive to re-growth.Among the signaling pathways hypothesized to be dysregulated during spinal cord injury is the purinergic signaling system.In addition to its well-known role as energy currency in cells,ATP and its metabolites are small molecule neurotransmitte rs that mediate many diverse cellular processes within the central nervous system.While our unde rstanding of the roles of the purinergic system following spinal cord injury is limited,this signaling pathway has been implicated in all injury-induced secondary processes,including cellular death,inflammation,reactive gliosis,and neural regeneration.Given that the purinergic system is also evolutionarily conserved between mammalian and non-mammalian species,comparisons of these roles may provide important insights into conditions responsible for recovery success.Here,we compare the secondary processes between key model species and the influence of purinergic signaling in each context.As our understanding of this signaling system and pro-regenerative conditions continues to evolve,so does the potential for the development of novel therapeutic interventions for spinal cord injury.Eva E.Stefanova Angela L.Scott 2022Neural Regeneration Research2022,17,11:1
12校长与教师的信任建立——解读美国田纳西州《教师提升计划》显示文摘2009年7月24日,美国启动“竞争卓越”(Race to the Top,简称RTTT)计划,提供40多亿美元资助各州改革基础教育,尤其是加强数学和科学的学科教育改革。2011年3月,田纳西州获得美国“竞争卓越”计划的最高奖,并获得了为期四年的5.01亿美元资助经费(从2010—2011学年到2013—2014学年)。之后,在一系列法案(《2010年田纳西州捷足先登法案)(2010年田纳西州完成大学教育法案》等)的保障下,田纳西州开始实施一项全面综合的学校改革计划——《田纳西州捷足先登计划》(Tennessee First to the Top)。肖丽平 罗蓉 L.Scott Calahan 2015江西教育(管理版)(A)2015,,4:1
13手术引起的女性更年期可促进全脑缺血后的海马区淀粉样变性(英文)显示文摘背景:研究发现,过早绝经的女性患痴呆的风险加倍,死干神经功能障碍的风险也增加5倍,但其分子机制还不明确。本研究试图探讨卵巢1 7β-雌二醇(E2)持续降低是否可能促进海马区局部缺血引起的淀粉状蛋白生成。方法:用已建造的早期手术性更年期大鼠模型(双侧卵巢切除术10周),在手术后立即给予E2(短期E2缺乏,STED)或卵巢切除术后期给予E2(长期E2缺乏,LTED)。在连续1周皮下注射E2后,对于动物进行全脑缺血10 min,再评价LTED对缺血诱导的海马CA1区淀粉样蛋白生成的作用。结果:海马区β淀粉样蛋白(Aβ)水平在全脑缺血后没有明显增加,而LTED雌鼠在全脑缺血后内源性Aβ水平快速稳健提高。在STED的雌鼠,我们观察到全脑缺血后减少ADAM10在海马CA1区的表达,而E2治疗能保持ADAM10在海马CA1区的表达水平。同时,全脑缺血后引起BACEl的增强,而E2可以在相同脑区域降低BACE1水平。然而,我们在LTED雌鼠观察到E2治疗失去了在海马CA1区对ADAM 10、ADAM 17和BACE1水平的调节,说明早期内源性雌激素长期缺乏会加重脑缺血后导致的Aβ-生成。同时,我们还观察到,LTED雌鼠全脑缺血后,E2还失去了对tau蛋白高度磷酸化的调节,为体内雌激素水平下降和脑缺血所导致的粉状蛋白增加的机制提供了证据。结论:本研究部分解释了过早绝经的妇女有高风险患痴呆和过早死亡的机制,并认为及时补充E2会使得神经系统得到最大的保护作用。Erin L.Scott Quan-Guang Zhang Yan Dong Dong Han Rui-Min Wang Ratna K.Vadlamudi Darrell W.Brann 2014Journal of Sport and Health Science2014,3,3:0
14Black locust coppice stands homogenize soil diazotrophic communities by reducing soil net nitrogen mineralization显示文摘Background:Black locust(BL,Robinia pseudoacacia)is considered a promising tree species for reforestation due to its great ability to fix nitrogen.However,after two or three coppice-harvesting rotations,the productivity of BL declines.Whether soil microbial communities are affected and how these groups correlate with the nitrogen mineralization process across multi-generation stands remains unclear.Methods:We investigated the composition and structure of free-living nitrogen-fixing microorganisms(diazotrophs)by sequencing the marker gene nifH and compared these results to levels of soil nitrogen mineralization in the bulk soil and rhizosphere in black locust plantations on Mount Tai,China.Results:The results showed multi-generation BL coppice plantations decreased the total soil nitrogen(N),soil phosphorus(P),soil microbial biomass N(MBN),soil microbial biomass C(MBC),soil nitrification rate(Rn),soil ammonification rate(Ra),and net soil N mineralization rate(Rm),but significantly increased the concentration of soil NH_(4þ)-N to maintain sufficient NO_(3)^(-)N.The dominant species in bulk soil and rhizosphere changed from Rhodopseudomonas(22.62%and 15.76%),unclassified_c_Alphaproteobacteria(22.37%and 29.28%),unclassified_o_Rhizobiales(15.40%and 13.31%),Bradyrhizobium(12.00%and 11.74%)in seedling plantations to Bradyrhizobium(45.95%and 47.86%)and Rhodopseudomonas(43.56%and 41.84%)in coppice plantations,respectively.Mantel test and Redundancy analysis(RDA)revealed that Rn,Ra,and Rm were the most important factors shaping the diazotrophic communities.Conclusions:Our results suggest that the multi-generation BL coppice plantation can homogenize soil diazotrophic communities,which is mainly regulated by the available N loss caused by nitrogen mineralization.Strengthening the management technology of coppice plantations will provide more beneficial external consumption.Kun Li Huimei Tian W.Keith Moser Steven T.Overby L.Scott Baggett Ruiqiang Ni Chuanrong Li Weixing Shen 2022Forest Ecosystems2022,9,3:0
15Lower extremity amputation:the emerging role of targeted muscle reinnervation(TMR)and regenerative peripheral nerve interface(RPNI)显示文摘Lower extremity amputation is increasingly prevalent in the United States,with growing numbers of patients suffering from diabetes and peripheral vascular disease.Amputation has significant functional sequelae as more than half of patients are unable to ambulate at one year postoperatively.Improving mobility and decreasing chronic post-amputation pain can significantly improve the quality of life for these patients and reduce the cost burden on the healthcare system.Plastic and reconstructive surgery has been at the forefront of“reconstructive amputation”,in which nerve pedicles can be surgically guided to decrease painful neuroma formation as well as provide targets for myoelectric prosthesis use.We herein review post-amputation outcomes,epidemiology of chronic,post-amputation pain,and current treatments,including total muscle reinnervation and regenerative peripheral nerve interface,which are at the forefront of multidisciplinary treatment of lower extremity amputees.Yoshiko Toyoda Said Azoury Andrew Bauder L.Scott Levin Stephen Kovach 2022Plastic and Aesthetic Research2022,9,1:0
16Purinergic signaling systems across comparative models of spinal cord injury显示文摘Within the last several decades,the scientific community has made substantial progress in elucidating the complex pathophysiology underlying spinal cord injury.However,despite the many advances using conventional mammalian models,both cellular and axonal regeneration following spinal cord injury have remained out of reach.In this sense,turning to non-mammalian,regenerative species presents a unique opportunity to identify pro-regenerative cues and characterize a spinal cord microenvironment permissive to re-growth.Among the signaling pathways hypothesized to be dysregulated during spinal cord injury is the purinergic signaling system.In addition to its well-known role as energy currency in cells,ATP and its metabolites are small molecule neurotransmitters that mediate many diverse cellular processes within the central nervous system.While our understanding of the roles of the purinergic system following spinal cord injury is limited,this signaling pathway has been implicated in all injury-induced secondary processes,including cellular death,inflammation,reactive gliosis,and neural regeneration.Given that the purinergic system is also evolutionarily conserved between mammalian and non-mammalian species,comparisons of these roles may provide important insights into conditions responsible for recovery success.Here,we compare the secondary processes between key model species and the influence of purinergic signaling in each context.As our understanding of this signaling system and pro-regenerative conditions continues to evolve,so does the potential for the development of novel therapeutic interventions for spinal cord injury.Eva E.Stefanova Angela L.Scott 2023Neural Regeneration Research2023,18,3:0
17Rb-Sr ISOTOPIC GEOCHRONOLOGY OF ARCHEAN ROCKS OF EASTERN HEBEI PROVINCE显示文摘The Archean rocks in this area were divided into two groups: the lower Qianxi Group including Shangchuan Formation and Santunying Formation, and the upper Badaohe Group including Wangchang Formation, Wanzhangzi Formation and Sanmendian Formation. The rocks of the Shangchuan Fro. are pyroxene孙荣圭 RICHARD LEE ARMSTRONG KRISTA L.SCOTT 1988Chinese Science Bulletin1988,33,3:0
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