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6080篇 您的检索式:作者名="Lyons"
    题名 作者 年代 出处 被引量
1广州小北路黑人聚居区社会空间分析显示文摘1978年改革开放带来中国城市的快速转型。近年来,针对经济转型背景下中国大城市的社会空间研究很多,但对在全球化影响下出现的跨国移民族裔聚居区的研究尚不多见。对广州黑人聚居区展开研究,以越秀区小北路为例,探讨其社会空间特征与演进机制。研究采用微观视角,针对典型案例进行问卷调查和半结构式访谈。研究表明,广州黑人聚居区与西方同类族裔社会区存在诸多差异。小北路黑人聚居区因全球化下新的'自下而上'的跨国经济联系而生,因广州城市的商贸文化、宗教历史、贸易网络和地理气候条件而兴,其跨国移民多为来自西非地区的族裔散居者/漂泊者(Diaspora),其人口构成异质多元,且流动性强。小北路的社会空间机制既包含被动隔离也包含主动聚居,其经济形态已经开始向'族裔聚居区经济'(ethnic enclave economy)发展。李志刚 薛德升 Michael Lyons Alison Brown 2008地理学报2008,63,2:123
2施用硒、锌、铁对玉米和大豆产量与营养品质的影响显示文摘采用黄土高原低硒区典型土壤,以玉米、大豆为供试作物,研究施用硒、锌、铁对作物产量和营养品质的影响。结果表明,仅施用氮、磷、钾肥料,玉米、大豆产量无明显变化,施用适量硒、锌、铁时,玉米产量明显提高15.6%~73.8%,大豆产量提高58.9%1~15.1%。施用硒、锌、铁,玉米籽粒氮含量明显增加,而磷、钾含量无明显变化,大豆籽粒氮含量无明显变化,磷、钾含量有所下降。土施或结合叶面喷施硒、锌、铁时,玉米和大豆籽粒硒、锌、铁含量明显增加,尤其是土施结合叶面喷施硒、锌、铁时效果突出。与对照比较,玉米籽粒硒增加480.4%、锌增加106.9%、铁增加126.7% 大豆籽粒硒增加512.9%、锌增加62.2%、铁增加15.6%。综合考虑玉米、大豆产量和籽粒硒、锌、铁含量变化,锌、硒适宜土壤施用,或土施结合叶面喷施施用,叶面喷施铁可有效提高作物籽粒铁含量。昝亚玲 王朝辉 毛晖 Graham Lyons 2010植物营养与肥料学报2010,16,1:62
3黄土高原旱地小麦与豆科绿肥轮作及施氮对小麦产量和籽粒养分的影响显示文摘小麦与豆科绿肥轮作和合理施用氮肥对黄土高原旱地缺素地区具有特别重要意义。本试验以夏休闲为对照,比较了小麦与绿豆、大豆、秋豆轮作和氮肥水平(0、108、1351、62 kg/hm2)对小麦产量和籽粒养分的影响。结果表明,小麦与豆科绿肥轮作,在黄土高原旱地受水分限制影响,小麦产量降低9.7%~26.6%;同时,与休闲处理相较,小麦籽粒养分携出量显著降低或表现出降低的趋势,其中,与绿豆轮作,小麦籽粒养分携出量降低最多,为10.5%~29.3%,大豆次之,为3.1%~12.8%,与当地大豆品种秋豆轮作,小麦籽粒养分携出量降低最少,为0.98%~11.7%。然而,小麦籽粒营养元素锌、磷、钾、钙、镁的含量与休闲处理相比,分别增加22.0%、18.5%、8.8%、7.9%、7.8%。小麦与绿肥轮作后,108 kg N/hm2(当地常规施氮量的80%)获得了较高小麦生物量和产量。同时,随施氮量的增加,小麦籽粒氮、硫、钙、铁、铜、锌的含量和养分携出量均表现出增加趋势;小麦籽粒含磷量和养分携出量有下降趋势;小麦籽粒锰含量呈现降低趋势但养分携出量增加;钾、镁的含量和养分携出量随施氮量无显著变化。李可懿 王朝辉 赵护兵 赵娜 高亚军 Graham Lyons 2011干旱地区农业研究2011,29,2:27
4Enhanced recovery programme in colorectal surgery:Does one size fit all?显示文摘Enhanced recovery after surgery(ERAS) employs a multimodal perioperative care pathway with the aim of attenuating the stress response to surgery and accelerating recovery.It has been difficult to determine the relative importance of some of the individual components of these pathways such as epidural analgesia and laparoscopic colorectal surgery.Some argue that only a rigid adherence to the published ERAS protocol can achieve the proposed benefits of fast-track surgery.In this article,we explore some of the areas where the evidence base may be changing and ask whether a more flexible and individualised approach should be considered.Alison Lyon Christopher J Payne Graham J MacKay 2012World Journal of Gastroenterology2012,18,40:18
5硒、锌对甘蓝型油菜产量和营养品质的影响显示文摘采用土培试验,以甘蓝型油菜为供试作物,研究了陕西渭北旱塬低硒、低锌土壤上,硒、锌对甘蓝型油菜产量和营养品质的影响。试验结果表明,硒对油菜生物量和产量没有明显的影响。锌或硒锌配施对油菜生物量和产量有增加趋势;施硒促进油菜籽对钾、硒元素的吸收累积,而在一定程度上抑制了磷、硫、钙和镁元素的吸收。施锌促进油菜对钾、钙、铁、锰、铜、锌、硼的吸收累积,而对氮、硫的吸收有抑制作用。硒锌配合施用有利于促进油菜对硒、锌的吸收累积,而对铁的吸收有一定的抑制作用;施硒对油菜籽含油量、芥酸有增加趋势,对蛋白质、硫甙含量有降低趋势。施锌对油菜籽含油量有增加趋势,对蛋白质、硫甙、芥酸有降低趋势。硒锌配施,油菜含油量、蛋白质、硫甙无变化,芥酸明显下降。昝亚玲 王朝辉 Graham Lyons 2010中国油料作物学报2010,32,3:11
6不同轮作体系土壤残留硒锌对小麦产量与营养品质的影响显示文摘采用盆栽试验,通过玉米-小麦和大豆-小麦轮作,探讨了不同种植模式中,土壤残留硒锌对小麦产量与营养品质的影响。结果表明,土壤中残留硒锌对小麦生物量和产量的影响与作物轮作体系有关。玉米-小麦轮作,土壤残留硒锌并没有表现出增加小麦产量的趋势,而大豆-小麦轮作,土壤残留硒锌对小麦生物量和产量呈增加趋势。土壤残留硒锌可改变作物体内元素组成。玉米-小麦轮作,土壤残留硒锌有利于小麦籽粒对氮、钾、硫、钙、铁、锌、硒、铜元素的吸收累积。大豆-小麦轮作,土壤残留硒锌促进小麦对钾、硫、镁、铁、锌、硒、铜、锰、硼的吸收,而氮、磷、钙吸收减少。昝亚玲 王朝辉 Graham Lyons 2010农业环境科学学报2010,29,2:10
7硒的价态与浓度水平对6种植物种子发芽和根际生长的影响显示文摘本文研究了硒的价态(Se6+和Se4+)和浓度水平(0~100mgSe·L-1)对6种植物(大麦、小麦、花椰菜、萝卜、苜蓿和欧芹)种子萌发和根际生长特性的影响。结果表明,低浓度硒(<1mgSe·L-1)对种子发芽促进作用不明显,而高浓度硒(>4mgSe·L-1)则有显著抑制作用,不同种子对硒的抗性表现不同。根长和芽长的测定结果表明,低浓度对花椰菜和小麦种子生长具有显著促进作用,对欧芹种子表现出抑制作用。较高浓度(1~4mg·L-1)即对花椰菜、苜蓿和欧芹的根生长表现出抑制作用,高浓度对小麦、大麦和萝卜根生长有抑制作用,且使芽生长受到抑制的硒浓度高于根生长。比较价态,低硒时六价对花椰菜生长的促进作用显著高于四价,高硒时小麦和苜蓿对硒的抗性表现为六价硒强于四价硒,其余科属差异不显著。不同科属对硒的抗性为禾本科小麦和大麦最强,十字花科花椰菜和萝卜次之,豆科苜蓿较差,伞形科欧芹最差。毛晖 王朝辉 Graham Lyons Glenn McDonald 2011农业环境科学学报2011,30,10:8
8加拿大城市生活垃圾的减量化管理显示文摘以加拿大安大略省为例,分析其城市生活垃圾减量化管理的历程、政策和机构设置;并在此基础上着重分析其居民垃圾减量化管理措施,总结出加拿大减量化管理模式,为中国的垃圾减量化管理提供借鉴。刘莉 李晓红 John Middleton Paul Lyons 2007环境保护2007,35,10B:8
9Corrosion of magnesium and magnesium–calcium alloy in biologically-simulated environment显示文摘A study of biocompatibility and corrosion of both metallic magnesium(Mg) and a magnesium alloy containing 1% calcium(Mg–Ca) were investigated in in vitro culture conditions with and without the presence of bone marrow derived human mesenchymal stem cells(h MSCs).Chemical analysis of the degraded samples was performed using XRD and FEGSEM. The results from the XRD analysis strongly suggested that crystalline phase of magnesium carbonate was present on the surface of both the Mg and Mg–Ca samples. Flame absorption spectrometry was used to analyse the release of magnesium and calcium ions into the cell culture medium. Magnesium concentration was kept consistently at a level ranging from 40 to 80 m M for both Mg and Mg–Ca samples. No cell growth was observed when in direct contact with the metals apart from a few cells observed at the bottom of culture plate containing Mg–Ca alloy. In general, in vitro study of corrosion of Mg–Ca in a biologicallysimulated environment using cell culture medium with the presence of h MSCs demonstrated close resemblances to in vivo corrosion. Although in vitro corrosion of Mg–Ca revealed slow corrosion rate and no immediate cytotoxicity effects to h MSCs, its corrosion rate was still too high to achieve normal stem cell growth when cells and alloys were cultured in vitro in direct contact.Richard Harrison Diana Maradze Simon Lyons Yufeng Zheng Yang Liu 2014Progress in Natural Science:Materials International2014,24,5:8
10Quantum phase transition and entanglement in Li atom system显示文摘By use of the exact diagonalization method, the quantum phase transition and en- tanglement in a 6-Li atom system are studied. It is found that entanglement appears before the quantum phase transition and disappears after it in this exactly solvable quantum system. The present results show that the von Neumann entropy, as a measure of entanglement, may reveal the quantum phase transition in this model.SI LiMing1 & HOU JiXuan2 1 Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing 100081, China 2 Laboratoire de Chimie, UMR 5182 CNRS, Ecole Normale Supérieure de Lyon, 46, Allée d’Italie, F-69364 Lyon Cedex 07, France 2008Science China(Physics,Mechanics & Astronomy)2008,51,11:6
11Clinical applications of exosome membrane proteins显示文摘Extracellular vesicles(EVs)are small membranous particles that can mediate cell-to-cell communication and which are divided into at least three categories according to their subcellular origin and size:exosomes,microvesicles,and apoptotic bodies.Exosomes are the smallest(30–150 nm)of these EVs,and play an important role in EV-mediated cell-to-cell interactions,by transferring proteins,nucleic acids and,lipids from their parental cells to adjacent or distant cells to alter their phenotypes.Most exosome studies in the past two decades have focused on their nucleic acid composition and their transfer ofmRNAs and microRNAs to neighboring cells.However,exosomes also carry specific membrane proteins that can identify the physiological and pathological states of their parental cells or indicate their preferential target cells or tissues.Exosome membrane protein expression can also be directly employed or modified to allow exosomes to serve as drug delivery systems and therapeutic platforms,including in targeted therapy approaches.This review will briefly summarize information on exosome membrane proteins components and their role in exosome–cell interactions,including proteins associated with specific cell-interactions and diseases,and the potential for using exosome membrane proteins in therapeutic targeting approaches.Qian Hu Hang Su Juan Li Christopher Lyon Wenfu Tang Meihua Wan Tony Ye Hu 2020Precision Clinical Medicine2020,3,1:6
12A new dynamic formula for determining the coefficient of Smagorinsky model显示文摘The most common method to determine the coefficient of Smagorinsky model now is to employ the Germano identity,however it is too complex and expensive in numerical calculation. In this letter we propose a new dynamic formula for determining the coefficient,which is based on the Kolmogorov equation of filtered velocity in physical space.The simplified formula is quite easy to implement in calculation.It is then verified in both homogeneous isotropic turbulence and wall-bounded turbulence by A Priori and A...Le Fang~(1,2,a)) 1)Laboratoire International Associe,Beihang University,Beijing 100191,China 2)China and LMFA-CNRS,Universite de Lyon,Ecole Centrale de Lyon,UCBL,INSA Lyon,69134 Ecully, France 2011Theoretical & Applied Mechanics Letters2011,1,3:4
13让人抓狂的日本车名显示文摘在过去这些年里,日本车的型号名称在国际汽车界~直让人觉得可笑、轻浮又费解。Peter Lyon 乐在其中 2010疯狂英语(阅读版)2010,,3:4
14护士在睡眠医学实践及研究中的作用显示文摘睡眠健康成为全球公共卫生的重要组成部分。睡眠障碍的发病率在世界范围内迅速升高,严重影响人们的生活质量。我国睡眠专业医师、技师队伍匮乏,睡眠中心分布和医疗资源发展不平衡,这些严重制约了我国睡眠医学的发展及睡眠健康保障水平的提高。在欧美等发达国家,睡眠医学成为一门新兴的交叉学科。护士作为睡眠管理师这一职业的发展成为大势所趋,护士经过培训成为睡眠技师的主力军。这些在睡眠医学领域的成功尝试为我国从医、教、研三方面推动护理在睡眠医学中发展提供借鉴。M.Melanie Lyons 李晨阳 Susan Kohl Malone 尚少梅 张素 Terri E.Weaver 2021中华医学杂志2021,101,22:4
15Chilling Injury in Plants显示文摘J M Lyons 1973Annual Review of Plant Physiology1973,,:4
16Nat Genet:单基因突变导致过敏性皮炎的发生显示文摘最近,研究者们鉴定出了一类导致神经性皮炎发生的关键基因突变:CARDll。来自美国NIH过敏与传染病研究所的研究者们通过对四个没有血缘关系的患病家庭进行分析,发现了这一导致疾病产生的基因、Chi A Ma, Yuan Zhang, Michael A Weinreich, Jonathan J Lyons, Celeste G Nelson, Thomas DiMaggio, Kelly D Stone, Joshua D Milner Jeffrey R Stinson, Elisa Ruffo, Batsukh Dorjbal, Swadhinya Arjunaraja, Kelsey Voss, Andrew L Snow Jordan K Abbott, Pia J Hauk, Paul R Reynolds, Erwin W Gelfand Elisa Ruffo Salomé Glauzy, Natsuko Yamakawa, Eric Meffre Jennifer Stoddard, Julie Niemela, Sergio D Rosenzweig Yu Zhang, Helen F Matthews Joshua J McElwee Nina Jones Alejandro Palma, Matías Oleastro, Emma Prieto, Andrea R Bernasconi, Geronimo Dubra, Silvia Danielian, Jonathan Zaiat, Marcelo A Marti Brian Kim Megan A Cooper Neil Romberg 2017现代生物医学进展2017,17,27:3
17游离血管化髂骨瓣:26例回顾分析显示文摘该文对应用游离髂骨瓣修复颌骨缺损的病例进行回顾研究,并分析手术并发症。作者共用26块髂骨肌瓣、1块髂骨肌皮瓣修复18例下颌骨和8例上颌骨缺损。1例因微血管再灌注问题而导致手术失败:3例术后行组织瓣抢救,其中2例吻合口血栓形成,重新吻合血管后抢救成功;10例术后出现股外侧皮神经支配区皮肤麻木,3例并发切口疝,1例供区创口裂开,2例并发口鼻瘘,1例颈部创口感染,Lyons AJ James R Collyer J 王延安 2005中国口腔颌面外科杂志2005,3,3:3
18Comparative eco-toxicity of nanoscale TiO 2 , SiO 2 , and ZnO water suspensions显示文摘Laura K. Adams Delina Y. Lyon Pedro J.J. Alvarez 2006Water Research2006,,19:3
19Cover Crop and Irrigation Effects on Soil Microbial Communities and Enzymes in Semiarid Agroecosystems of the Central Great Plains of North America显示文摘盖子庄稼能由增加碳(C) 供应在土壤微生物学上有有益的效果,但是这些有益的效果能被降水条件调制。这研究的目的是比较休闲冬季小麦(Triticum aestivum L.) 旋转到在在半干旱的美国高平原的 rainfed 和灌溉条件下面的几盖子庄稼冬季小麦旋转。实验在科罗拉多在二个地点,在内布拉斯加的 Sidney,和 Akron 被执行,美国与三次在在盖子庄稼结束的 2012-2013 的土壤采样,种的小麦,和小麦成熟。实验包括了四单个种类的盖子庄稼, 10 种类混合物,和一个休闲处理。测量的变量是土壤 C 和氮(N) ,由甲基酉旨(名声) 介绍的丰满的酸的土壤社区结构,和土壤 -glucosidase,-glucosaminidase, 和 phosphodiesterase 活动。休闲处理,缺乏生活植物,在盖子庄稼结束减少了大多数名声的集中。全部的名声集中与盖子庄稼生物资源被相关(R = 0.62 在 Sidney 并且 0.44 在 Akron ) 。等到种的小麦,有灌溉的有益的效果,它在 mycorrhizal 和原生动物门标记引起了增加。在小麦成熟,土壤名声上的盖子庄稼和灌溉效果减退了,但是灌溉在 Akron 在 -glucosidase 和 phosphodiesterase 活动上有积极效果,它二个地点中是更干燥的。盖子庄稼和灌溉是慢的影响土壤 C 集中。我们的结果证明盖子庄稼在在半干旱的基于小麦的旋转和灌溉的微生物引起的社区能提高的土壤上有短命效果土壤酶活动。在半干旱的环境,更长的时间跨度可能被需要在土壤上看见盖子庄稼的有益的效果微生物引起的社区结构,土壤酶活动,和土壤 C 隐遁。Francisco J. CALDERON David NIELSEN Veronica ACOSTA-MARTINEZ Merle F. VIGIL Drew LYON 2016Pedosphere2016,26,2:3
20Chilling Injury in Plants显示文摘J M Lyons 1973Annual Review of Plant Physiology1973,,:3
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