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Biomimetic Composite Structura. T-joints

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Journa. of Bionic Engineering 2012年第3期9卷 377-384页

作者： Vima. Kuma. Thumma.a.a.li Steven L. donaldson University of Da.ton 300 College Park Dayton Ohio 45469-0243 USA

Biologica. structura. fixed joints exhibit unique a.tributes, including highly optimized fiber pa.hs which minimize stress concentra.ions. In a.dition, since the joints consist of continuous, uncut fiber a.chitectures, the joints ena.le the orga.ism to tra.sport informa.ion a.d chemica.s from one pa.t of the body to the other. To the contra.y, sections of ma.-ma.e composite ma.eria. structures a.e often joined using bolted or bonded joints, which involve low strength a.d high stress concentra.ions. These methods a.e a.so expensive to a.hieve. a.ditiona. functions such a. fluid tra.sport, electrica. signa. delivery, a.d therma. conductivity a.ross the joints typica.ly require pa.a.itic tubes, wires, a.d a.ta.hment clips. By using the biomimetic methods, we seek to overcome the limita.ions which a.e present in the conventiona. methods. In the present work, biomimetic co-cured composite sa.dwich T-joints were constructed using unidirectiona. gla.s fiber, epoxy resin, a.d structura. foa.. The joints were fa.rica.ed using the wet la.-up va.uum ba. resin infusion method. Foa. sa.dwich T-joints with multiple continuous fiber a.chitectures a.d sa.dwich foa. thickness were prepa.ed. The designs were tested in qua.i-sta.ic bending using a.mecha.ica. loa. fra.e. The significa.t weight sa.ings using the biomimetic a.proa.hes is discussed, a. well a. a.compa.ison of fa.lure modes versus a.chitecture is described.

关键词： composites T-joints biomimetic fibergla.s epoxy sa.dwich foa.

Ringing ca.cella.ion in Ca.r-Purcell-Meiboom-Gill-type sequences

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Ma.netic Resona.ce Letters 2022年第4期2卷 233-242页

作者： Shin Utsuza.a.Ma.cus donaldson Yi-Qia. Song Schlumberger-Doll Resea.ch CambridgeMA02139USA John a.Pa.lson School of Engineering a.d a.plied Sciences Harvard UniversityCambridgeMA02138USA a.hinoula.a.Ma.tinos Center for Biomedica. Ima.ing Department of RadiologyMassachusetts General HospitalCharlestownMA02129USA

We propose a.four-step pha.e cycling scheme tha. ca. ca.cel ringings from both the excita.ion a.d the refocusing pulses in Ca.r-Purcell-Meiboom-Gill(CPMG)*** a.lows a.cura.e mea.urements of the first echo with short echo spa.ing tE,yielding improved precision of porosity,permea.ility,a.d fluid type identifica.ion in porous media.study,a. a.cost of~25%signa. *** our exa.ple,we a.hieved tE=100 ms on a.6.8 MHz unila.era. NMR sensor without using a.*** methods ca. be integra.ed in a.l nuclea. ma.netic resona.ce(NMR)protocols using CPMG,such a. rela.a.ion(T1,T2)a.d diffusion mea.urements,a.d do not require a.ditiona. ha.dwa.e(e.g.,Qswitches)to ca.cel ringing(a.though it ca. be used with a.Q-switch to further reduce residua. ringing).

关键词： CPMG Ringing ca.cella.ion Pha.e cycling

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Beowulf

作者： tra.sla.ed by E. Ta.bot donaldson edited by Nichola. Howe.

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烈火疑云

烈火疑云

作者： K.T.·唐纳森 K.T.·donaldson导演

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对话美国前NBa.星分享职业篮球的苦与乐

Scientific evidence is just the sta.ting point: a.genera.iza.le process for developing sports injury prevention interventions

2019年

主讲人： Ja.es donaldson

他曾获得NBa.度得分冠军，他曾入选美国全明星球队，他曾和魔术师，迈克乔丹，大鲨鱼等同场竞技，他就是Ja.es donaldson先生。这次他再度做客“饶舜英语访谈”畅谈NBa.业球员的训练与日常，以及他们获得的机遇与面临的挑战，带我们走...

他曾获得NBa.度得分冠军，他曾入选美国全明星球队，他曾和魔术师，迈克乔丹，大鲨鱼等同场竞技，他就是Ja.es donaldson先生。这次他再度做客“饶舜英语访谈”畅谈NBa.业球员的训练与日常，以及他们获得的机遇与面临的挑战，带我们走进NBa.员的真实世界。同时作为过来人，他将给新秀运动员学生推心置腹的指导和建议。（感谢La.ra.供翻译校对）

关键词：

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Journa. of Sport a.d Hea.th Science 2016年第3期5卷 334-341页

作者： a.ex donaldson Da.id G.Lloyd Belinda.J.Ga.be Jill Cook Wa.ren Young Peta.White Ca.oline F.Finch a.stra.ia. Centre for Resea.ch into Injury in Sport a.d its Prevention (a.RISP) Federation University Australia Centre for Musculoskeleta. Resea.ch Griffith Health Institute Griffith University Depa.tment of Epidemiology a.d Preventive Medicine Monash University La.Trobe Sport a.d Exercise Medicine Resea.ch Centre La Trobe University School of Hea.th Sciences Federation University Australia

Ba.kground: The 2 most cited sports injury prevention resea.ch fra.eworks incorpora.e intervention development, yet little guida.ce is a.a.la.le in the sports science litera.ure on how to underta.e this complex process. This pa.er presents a.genera.iza.le process for developing implementa.le sports injury prevention interventions, including a.ca.e study a.plying the process to develop a.lower limb injury prevention exercise tra.ning progra.(Footy First) for community a.stra.ia. ***: The intervention development process is underpinned by 2 complementa.y premises:(1) tha. evidence-ba.ed pra.tice integra.es the best a.a.la.le scientific evidence with pra.titioner expertise a.d end user va.ues a.d(2) tha. resea.ch evidence a.one is insufficient to develop implementa.le ***: The genera.iza.le 6-step intervention development process involves(1) compiling resea.ch evidence, clinica. experience, a.d knowledge of the implementa.ion context;(2) consulting with experts;(3) enga.ing with end users;(4) testing the intervention;(5) using theory; a.d(6)obta.ning feedba.k from ea.ly implementers. Following ea.h step, intervention content a.d presenta.ion should be revised to ensure tha. the fina. intervention includes evidence-informed content tha. is likely to be a.opted, properly implemented, a.d susta.ned over time by the ta.geted intervention deliverers. For Footy First, this process involved esta.lishing a.multidisciplina.y intervention development group, conducting 2ta.geted litera.ure reviews, underta.ing a. online expert consensus process, conducting focus groups with progra. end users, testing the progra. multiple times in different contexts, a.d obta.ning feedba.k from ea.ly implementers of the ***: This systema.ic yet pra.ma.ic a.d itera.ive intervention development process is potentia.ly a.plica.le to a.y injury prevention topic a.ross a.l sports settings a.d levels. It will guide resea.chers wishing to underta.e interventio

关键词： a.stra.ia. footba.l Implementa.ion Intervention development Lower limb injuries Resea.ch-to-pra.tice Sports injury prevention Tra.sla.ion

Porosity Effects on Interla.ina. Fra.ture Beha.ior in Ca.bon Fiber-Reinforced Polymer Composites

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Ma.eria.s Sciences a.d a.plica.ions 2017年第2期8卷 170-187页

作者： Issa.a. Ha.im Steven L. donaldson Norbert G. Meyendorf Cha.les E. Browning Depa.tment of Mecha.ica. & a.rospa.e Engineering University of Dayton Dayton OH USA Fra.nhofer-IKTS Berlin Germany Depa.tment of Mecha.ica. Engineering Omar Al-Mukhtar University El-Beida Libya Depa.tment of Civil & Environment Engineering & Engineering Mecha.ics University of Dayton Dayton OH USA Depa.tment of a.rospa.e Engineering Iowa State University Ames IA USA Depa.tment of Chemica. & Ma.eria.s Engineering University of Dayton Dayton OH USA

Fiber-reinforced polymer composite ma.eria.s ha.e become ma.eria.s of choice for ma.ufa.turing a.plica.ion due to their high specific stiffness, strength a.d fa.igue life, low density a.d therma. expa.sion coefficient. However, there a.e some types of defects such a. porosity tha. form during the ma.ufa.turing processes of composites a.d a.ter their mecha.ica. beha.ior a.d ma.eria. properties. In his study, ha.d la.-up wa. conducted to fa.rica.e sa.ples of ca.bon fiber-reinforced polymer composites with three different va.uum levels in order to va.y porosity content. Nondestructive eva.ua.ion, destructive techniques a.d mecha.ica. testing were conducted. Nondestructive eva.ua.ion results showed the trend in percenta.es of porosity through-thickness. Seria. sectioning ima.es revea.ed significa.t deta.ls a.out the composite’s interna. structure such a. the volume, morphology a.d distribution of porosity. Mecha.ica. testing results showed tha. porosity led to a.decrea.e in both Mode I sta.ic interla.ina. fra.ture toughness a.d Mode I cyclic stra.n energy relea.e ra.e fa.igue life. The fra.togra.hic microgra.hs showed tha. porosity content increa.ed a. the va.uum decrea.ed, a.d it drew a.rela.ionship between fra.ture mecha.isms a.d mecha.ica. properties of the composite under different modes of loa.ing a. a.result of the porosity effects. Fina.ly, in order to a.cura.ely qua.tify porosity percenta.es included in the sa.ples of different va.uum levels, a.compa.ison wa. ma.e between the pa.a.eters a.d percenta.es resulted from the nondestructive eva.ua.ion a.d mecha.ica. testing a.d the fea.ures resulted from fra.togra.hy a.d seria. sectioning.

关键词： Ca.bon Fiber Reinforced Composite Nondestructive Eva.ua.ion Porosity Fa.igue Fra.ture Beha.ior Seria. Sectioning

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最后一颗蛋

Protein profiles of enzyma.ica.ly isola.ed rumen epithelium in sheep fed a.fibrous diet

丛书名：丽声英语小剧场,外研社英语分级阅读

2015年

作者： (英)Julia.donaldson

本套书通过真实、生动的剧本诵读、戏剧表演和贯穿其中的互动合作，获得语言感知、语言理解、语言运用和语言鉴赏的多种体验。本书为最后一颗蛋。

ISBN: (纸本)9787513556774;9787881044293

关键词：英语

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Journa. of a.ima. Science a.d Biotechnology 2019年第2期10卷 449-462页

作者： J.J.Bond a.J.donaldson J.V.F.Couma.s K.a.stin D.Ebert D.Wheeler V.H.Oddy NSW Depa.tment of Prima.y Industries Extensive Livestock Industry CentreUniversity of New EnglandTrevenna RdArmidaleNSW 2351Australia School of Rura. Medicine University of New EnglandArmidaleNSW 2351Australia NSW Depa.tment of Prima.y Industries Orange Agricultural InstituteOrangeNSW 2800Australia.

Ba.kground: The rumen wa.l pla.s a.ma.or role in efficient tra.sfer of digested nutrients in the rumen to periphera. tissues through the porta. venous system. Some of these substra.es a.e meta.olised in the epithelium during this process. To identify the specific proteins involved in these processes, we used proteomic technologies. Protein extra.ts were prepa.ed from ventra. rumen tissue of six sheep fed a.fibrous diet a. 1.5× ma.ntena.ce energy *** a.newly developed method, we were a.le to enzyma.ica.ly isola.e the epithelia. cells from underlying tissue la.ers, thus a.lowing cytosol a.d membra.e fra.tions to be independently a.a.ysed using liquid chroma.ogra.hy ta.dem ma.s spectrometry(LC MS/MS).Results: Using our procedure we identified 570 epithelia. proteins in the Ovis a.ies sequence da.a.a.e. Subcellula. loca.ions were la.gely cytosolic(n = 221) a.d extra.ellula.(n = 85). However, a.qua.ter of the proteins identified were a.signed to the pla.ma.membra.e or orga.elle membra.es, some of which tra.sport nutrients a.d meta.olites. Of these 91 were tra.smembra.e proteins(TMHMM), 27 ha. a. N-termina. signa. peptide(signa.P) a.d TMHMM motif,13 ha. a.glycosylphospha.idylinositol(GPI) a.chor a.d signa.P sequence, 67 ha. beta.β) stra.ds or 17 β stra.ds a.d a.tra.sit peptide sequence, indica.ing the identified proteins were integra. or periphera. membra.e proteins. Subunits of the 5 protein complexes involved in mitochondria. cellula. energy production were well represented. Structura. proteins(15%), proteins involved in the meta.olism of lipids a.d proteins(26%) a.d those with steroid or cytokine a.tion were a.fea.ure of the ***: Our resea.ch ha. developed a.procedure to isola.e rumen epithelium proteins from the underlying tissue la.ers so tha. they ma. be profiled using proteomic technologies. The a.proa.h improves the number of proteins tha. ca. be profiled tha. a.e specific to the epithelium of the rumen wa.l. It provides new insights

关键词： Epithelium Meta.olism Nutrition Proteome Rumen Sheep