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| 1 | Comparative susceptibility and immune responses of Asian and European honey bees to the American foulbrood pathogen, Paenibacillus larvae显示文摘American foulbrood (AFB) disease is caused by Paenibacillus larvae. Currently, this pathogen is widespread in the European honey bee— Apis mellifera. However, little is known about infectivity and pathogenicity of P. lan'ae in the Asiatic cavity-nesting honey bees, Apis cerana. Moreover, comparative knowledge of P. larvae infectivity and pathogenicity between both honey bee species is scarce. In this study, we examined susceptibility, larval mortality, survival rate and expression of genes encoding antimicrobial peptides (AMPs) including defensin, apidaecin, abaecin, and hymenoptaecin in A. mellifera and A. cerana when infected with P. larvae. Our results showed similar effects of P. larvae on the survival rate and patterns of AMP gene expression in both honey bee species when bee larvae are infected with spores at the median lethal concentration (LC5 0 ) for A. mellifera. All AMPs of infected bee larvae showed significant upregulation compared with noninfected bee larvae in both honey bee species. However, larvae of A. cerana were more susceptible than A. mellifera when the same larval ages and spore concentration of P. larvae were used. It also appears that A. cerana showed higher levels of AMP expression than A. mellifera. This research provides the first evidence of survival rate, LC50 and immune response profiles of Asian honey bees, A. cerana, when infected by P. larvae in comparison with the European honey bee, A. mellifera. | Sasiprapa Krongdang Jay D.Evans Yanping Chen Wannapha Mookhploy Panuwan Chantawannakul | 2019 | Insect Science2019,26,5: | 2 |
| 2 | Crystallization of Sol–Gel‐Derived Barium Strontium Titanate Thin Films显示文摘 | Maria C.Gust Leslie A.Momoda Neal D.Evans Martha L.Mecartney | 2004 | Journal of the American Ceramic Society2004,,5: | 1 |
| 3 | Relationships between fabric,water retention,and strength of hard subsoils in the south of Western Australia显示文摘 | G.A.Kew R.J.Gilkes D.Evans | | 0,,48: | 1 |
| 4 | SERUM INSULIN‐LIKE GROWTH FACTOR‐I AND INSULIN‐LIKE GROWTH FACTOR BINDING PROTEIN‐3 FOLLOWING CHEMOTHERAPY FOR ADVANCED BREAST CANCER显示文摘 | Ian M.Holdaway Barbara H.Mason Anne E.Lethaby VijaySingh Vernon J.Harvey Paul I.Thompson Barrie D.Evans | 2003 | ANZ Journal of Surgery2003,,11: | 1 |
| 5 | Nitrogen isotope composition of tomato (Lycopersicon esculentum Mill. cv. T‐5) grown under ammonium or nitrate nutrition显示文摘 | R. D.EVANS A. J.BLOOM S. S.SUKRAPANNA J. R.EHLERINGER | 2006 | Plant, Cell & Environment2006,,11: | 1 |
| 6 | Factors contributing to the outcome of oxidative damage to nucleic acids显示文摘 | Mark D.Evans Marcus S.Cooke | 2004 | Bioessays2004,,5: | 1 |
| 7 | 生活在不平静的行星上的计划设立美国航空航天局的固体地球研究议程显示文摘现在和未来20年固体地球科学所面临的最大挑战是什么?而对美国国家航空航天局(NASA)来说,在与其他机构合作时,什么又是解决这些挑战的最好途径呢?一份《在不平静的行星上生活》的新报告,为回答这些问题提供了一份蓝图。根据这份报告,未来5年,固体地球科学领域最优先的一次新的宇宙飞船飞行行动是发射一颗干涉测量合成孔径雷达(inSAR)卫星。在NASA的要求下,固体地球科学工作组(SESWG)为太空机构未来25年固体地球科学的最优先目标制定了一个战略。该战略提出6个挑战,它们都具有基础科学的重要性,对社会有着重要意义并且能够通过在太空进行一系列共同的科学观测而取得实质性的进展。成功应对这些挑战将有赖于在其他的NASA计划方面与许多美国联邦机构以及国际合作伙伴之间进行密切合作和协作。固体地球科学工作组提出的计划分为5个观测方面,每一方面都将面对众多的科学挑战:陆地表面的形变、高分辨率地形和地形的变化、地球磁场的变异性、地球重力场的变异性以及地球变化表面的成像光谱。该工作组的评议工作已进行了两年(2000~2002年),包括与广泛的地球物理学团体之间进行卓有成效的对话。AGU2000年秋季和2001年春季会议的代表帮助达成了广泛的共识,并设立了网站,用于给出委员会的进展报告并邀请所有感兴趣的人士反馈意见。由华盛顿卡内基研究所的Solomon任主席的固体地球科学工作组由19位代表组成,分别来自大学、研究机构、美国航空航天局和美国地质调查局。总报告可以在http://gffzz214303114d034a7dhb6poq9nkpc5f6pvb.ffgz.tsg.suse.edu.cn/nasa.gov上找到。 | S.C.Solomon V.R.Baker J.Bloxham J.Booth A.Donnellan C.Elachi D.Evans E.Rignot D.Burbank B.F.Chao A.Chave A.Gillespie T.Herring R.Jeanloz J.LaBrecque B.Minster W.C.Pitman Ⅲ M.Simons D.L.Turcotte M.L.C.Zoback 盛菊琴 | 2004 | 世界地震译丛2004,35,5: | 0 |
| 8 | 超精磨的磨削液技术显示文摘由于磨削生产的速度不断加快,磨削液性能的重要性愈加显现出来。尤其在使用电镀CBN砂轮工艺时,这一点更加明显。本文着重介绍的是研究和评价新型磨削液技术性能的方法。 | Muge A.Caglar Robert D.Evans | 2002 | 现代制造2002,,9: | 0 |
| 9 | Combined flow-focus and self-assembly routes for the formation of lipid stabilized oil-shelled microbubbles显示文摘Lipid and polymer stabilized microbubbles are used in medicine as contrast agents for ultrasound imaging and are being developed for the delivery of water soluble drugs to diseased areas of the body.However,many new therapeutics exhibit poor water solubility or stability,which has led to the requirement for the development of effective hydrophobic drug delivery systems.This study presents a new method to produce microbubbles coated with an oil layer capable of encapsulating hydrophobic drugs and suitable for targeted,triggered drug release.This new method utilizes highly controllable flow-focusing microfluidics with lipid oil nanodroplets self-assembling and spreading at gas–aqueous interfaces.Oil layer inside microbubbles were produced with diameters of 2.4±0.3μm(s.d.,1.6μm)and at concentrations up to 10^(6) bubbles per milliliter.The mechanism of oil layer inside microbubble assembly and stability were characterized using methods including contact angle measurements,quartz crystal microbalance with dissipation monitoring and fluorescence resonance energy transfer imaging. | Adam H.Churchman Victoria Mico Julia Gala de Pablo Sally A.Peyman Steven Freear Stephen D.Evans | 2018 | Microsystems & Nanoengineering2018,4,1: | 0 |
| 10 | 新杀虫剂Cyhalon显示文摘本文介绍 ICI 公司的新合成拟除虫菊酯类杀虫剂——Oyhalon。开发沿革ICI 公司自1974年起从英国 NRDC 引入并开发氯菊酯和氯氰菊酯。作为本公司最早的研究课题,则为在1977年创制了菊酸部分有三氟甲基取代的新合成拟除虫菊酯类杀虫剂Cyhalon 的有效成份 cyhalothrin。 | D.Evans 戎谊 | 1990 | 农药译丛1990,12,1: | 0 |
| 11 | 圆柱滚子轴承涂抹损伤的预防显示文摘符号说明Fr:试验轴承上施加的径向载荷,kNP:平均Hertz接触应力,PaPmax:最大Hertz接触应力。 | Ryan D.Evans 铁晓艳 张振潮 | 2014 | 国外轴承技术2014,0,4: | 0 |
| 12 | 边界润滑条件下轴承表面的透射电镜观察 第一部分:矿物油润滑剂显示文摘在摩擦接触中,近表面材料(深度〈500nm)起着阻止表面超始型腐蚀和裂纹进人内部的“大门”作用,它直接影响着润滑、添加剂膜层形成和磨损。在边界润滑条件下,重要的是近表面材料的特性,其特点是由于薄层润滑膜导致的凸峰-凸峰接触以及较高概率的污染粒子的相互作用。油膜厚度参数∧,即最小润滑油膜厚度与综合表面粗糙度之比,常用来表述摩擦接触时的润滑区域特征。Fein归纳出:∧≤1时,存在边界润滑;而∧≤2时,为部分边界润滑(或混合润滑)。Kaoto用图显示出混合润滑时的类似情况,但建议∧≤0.1为边界润滑。实际上,在混合润滑时存在的凸峰-凸峰接触,如轴承的承载区,局部为边界润滑。当∧值下降时在整个接触区的凸峰接触及其带来的局部边界润滑都会增大。当钢制滚动体轴承启动、低速旋转和在高温条件下运转,或使用的润滑剂粘度比需要的低时,轴承中就可能存在边界和混合润滑区。 | Ryan D.Evans | 2007 | 国外轴承技术2007,,1: | 0 |
| 13 | 回收利用钢厂副产品——已经应用的新技术和突出问题显示文摘钢铁生产过程产生大量的副产品。尽管其颗粒物从污染控制系统中得以回收利用,通常还是固体渣在这些副产品中所占比例最大。多年来一些钢厂一直在回收利用这些炼钢副产品,但随着处理技术、材料特性及环境法规的变化,必须着手解决新的问题。本文对处理炼钢副产品以进行厂内利用或厂外应用的部分实用技术进行了研究和分析。炼钢过程中原料带入的杂质意味着不可能利用所有产生的副产品。然而,通过精心的加工处理,有可能将这些副产品转化成其它行业可以利用的形态。行业和立法者面临的挑战是创建相应环境和条件,推进技术开发,寻找钢铁副产品处理和利用的方法,增强钢铁工业的可持续性。 | D.Evans 蔡得祥 沙高原 | 2005 | 世界钢铁2005,5,3: | 0 |