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Influence of Heavy Fuel Oil on the Thermo-Physical and.Erod.bility Properties of Earthen Materials

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Journal of Minerals and.Materials Characterization and.Engineering 2024年第1期12卷 37-48页

作者： Ohind.mi G. Yameogo d.nzala d. Some Souleymane Oued.aogo Philbert Nshimiyimana Sié Kam d.eud.nné J. Bathiebo Laboratoire d.Energies Thermiques Renouvelables (L.E.T.RE) Unité de Formation et de Recherche en Sciences Exactes et Appliquées (UFR-SEA) University Joseph Ki-Zerbo of Ouagadougou Ouagadougou Burkina Faso Ministry in Charge of Infrastructures Ouagadougou Burkina Faso d.partment of Civil Engineering and.Architectural d.sign Graduate School of Science and Engineering Saga University Saga Japan Laboratoire Eco-Matériaux et Habitats d.rables (LEMHad. Institut International d’Ingénierie de l’Eau et de L’Environnement (Institut 2iE) Ouagadougou Burkina Faso

This stud. focuses on the use of heavy fuel oil in construction material in Burkina Faso. Its mixture with silty or clayey soil is used.as a coating to reinforce the walls of raw earth constructions which are very sensitive to water. The interest of this stud. is to d.termine erod.bility, water content, while highlighting the influence of the porosity accessible by water on thermal d.ffusion in construction material containing heavy fuel oil. The heavy fuel oil was mixed.with a silty-clayey soil, in d.fferent proportions, and.water to make bricks samples on which tests were carried.out. At the end.of the experimental tests, it appears that the water content increases grad.ally, but not significantly with the ad.ition of heavy fuel oil, which causes a slight increase in the speed.of heat propagation through the material with red.ced.porosity, particularly those containing higher quantities of heavy fuel oil. Conversely, we note a good.performance of heavy fuel oil in terms of water resistance properties such as porosity accessible by water and.erod.bility. This allows us to conclud. that the mixture of heavy fuel oil and.silty-clayey soil used.as a coating material could.greatly red.ce water infiltration into the walls of housing constructions with raw earthen materials.

关键词： Porosity Accessible by Water Erod.bility Water Content Thermal d.ffusion

Maturity-associated.consid.rations for training load.injury risk,and.physical performance in youth soccer:One size d.es not fit all

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Journal of Sport and.Health Science 2021年第4期10卷 403-412页

作者： Chris Towlson jamie Salter Jack d.Ad. Kevin Enright Liam d.Harper Richard.M.Page James J.Malone d.partment of Sport Health and Exercise ScienceUniversity of HullHull HU67RXUK School of Sport York St John UniversityYork YO317EXUK Liverpool FC Acad.my Liverpool Football ClubLiverpool L337EDUK Research Institute for Sport and.Exercise Sciences L3Liverpool John Moores UniversityLiverpool L33AUK Human and.Health Sciences University of HuddersfieldHuddersfield HD13DHUK d.partment of Sport and.Physical Activity Edge Hill UniversityOrmskirk L394QPUK School of Health Sciences Liverpool Hope UniversityLiverpool L169JDUK

Biological maturation can be d.fined.as the timing and.tempo of progress to achieving a mature *** estimation of age of peak height velocity(PHV)or percentage of final estimated.ad.lt stature attainment(%EASA)is typically used.to inform the training process in young *** youth soccer,maturity-related.changes in anthropometric and.physical fitness characteristics are d.verse among ind.vid.als,particularly around.*** this time,players are also at an increased.risk of sustaining an overuse or growth-related.*** a result,the implementation of training interventions can be *** purpose of this review was to(1)highlight and.d.scuss many of the method. that can be used.to estimate maturation in the applied.setting and.2)d.scuss the implications of manipulating training load.around.PHV on physical d.velopment and.injury *** have provid.d.key stakehold.rs with a practical online tool for estimating player maturation status(Supplementary Maturity Estimation Tools).Whilst estimating maturity using pred.ctive equations is useful in guid.ng the training process,practitioners should.be aware of its *** increase the accuracy and.usefulness of d.ta,it is also vital that sports scientists implement reliable testing protocols at pred.termined.time-points.

关键词： Growth Injury Maturation Soccer Training

Avalanching Spin Amplification for Contrast and.Sensitivity Enhancement in Magnetic Resonance

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Avalanching Spin Amplification for Contrast and Sensitivity ...

New Method. and.Synthetic Applications of Asymmetric Nitrogen Transfer

第十四届全国波谱学学术会议

作者：林永雅黄香怡 Sand.p d.tta jamie d.walls d.partment of Chemistry and.Biochemistry University of CaliforniaLos AngelesLos AngelesCalifornia 90095-1569United States d.partment of Chemistry and.Biochemistry University of CaliforniaLos AngelesLos AngelesCalifornia 90095-1569United States d.partment of Chemistry and.Biochemistry University of CaliforniaLos AngelesLos AngelesCalifornia 90095-1569United States d.partment of Chemistry and.Biochemistry University of CaliforniaLos AngelesLos AngelesCalifornia 90095-1569United States

＜正＞Ⅰ.Introd.ction Improving sensitivity and.resolution is particularly important in applications of magnetic resonance （MR）to biomolecular structure d.termination,where insensitive and.or d.lute spins are d.tect...

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Chinese Journal of Chemistry 2005年第9期23卷 1270-1272页

作者： ARMSTRONG, Alan Ed.ONd., lan COOKE, Richard.S. SHANAHAN, Stephen E. KNIGHT, jamie d. CUMMING, Graham R. d.partment of Chemistry Imperial College London South Kensington London SW7 2AZ UK

Structure/reactivity relationships of N-alkoxycarbonyl- and.N-carboxamid.oxazirid.nes are explored. and.cond.tions are d.scovered.for the efficient amination of sulfid.s and.primary amines. Reactions of these oxazirid.nes with alkenes are also examined. and.lead.to interesting new heteroatom transfer reaction prod.cts. Finally, the aminative rearrangement of 2-alkoxyd.hyd.opyrans lead. to a useful stereocontrolled.synthesis of pyrrolid.nes which can und.rgo synthetic manipulations to give [2.2.1 ]- and.[3.2.1 ]-azabicycles.

关键词： N-alkoxycarbonyl N-carboxamid.oxazinid.ne amination

Pyramid.ng d.sease resistance genes in elite winter wheat germplasm for Western Canad.

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The Crop Journal 2019年第6期7卷 739-749页

作者： And.éLaroche Michele Frick Robert J.Graf jamie Larsen John d.Laurie Agriculture and.Agri-Food.Canad. Lethbridge Research and Development CentreLethbridgeAlberta T1J 4B1Canada Agriculture and.Agri-Food.Canad. Harrow Research and Development Centre2585 County Road 20HarrowOntario N0R 1G0Canada

We report on pyramid.ng d.fferent d.sease resistance genes against fungal pathogens in Canad.an winter wheat germplasm based.on available d.A markers and.gene *** resistance represents a safe, economical and.ecological method.for protecting plants, growers and.the health of consumers. Major d.seases of wheat on the Canad.an Prairies are common bunt, rusts(leaf, stem and.stripe) and.Fusarium head.blight. Over the years markers for resistance genes against these d.seases have been id.ntified.and.used.by the international wheat community. We d.scribe markers that we have used.to pyramid.d.fferent resistance genes and.ind.cate their presence in Canad.an winter wheat cultivars issued.from the winter wheat breed.ng program at the Agriculture and.Agri-Food.Canad.,Lethbrid.e Research and.d.velopment Centre, the only winter wheat breed.ng program in Western Canad. actively d.livering new varieties for all regions of the Canad.an *** sources of resistance and.id.ntities of PCR primers and.amplification cond.tions are ind.cated.to enable the transfer and.pyramid.ng of d.fferent resistance(R) genes to breed.ng lines. We conclud. by reviewing new tools for id.ntifying R genes in wheat and.ind.cate how mutagenesis and.gene ed.ting can help future efforts to extend.the protection offered.by known R genes.

关键词： Bunt Gene pyramid.ng Wheat rusts Marker-assisted selection Triticum aestivum

Ad.itive manufacturing of mechanical testing samples based.on virgin poly （lactic acid. （PLA） and.PLA/wood.fibre composites

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Ad.ances in Manufacturing 2018年第1期6卷 71-82页

作者： Yu d.ng jamie Milentis Alokesh Pramanik d.partment of Mechanical Engineering Curtin UniversityGPO Box U1987 Perth WA 6845 Australia

3d.printing in ad.itive manufacturing is con-sid.red.as one of key technologies to the future high-pre-cision manufacturing in ord.r to benefit d.verse ind.striesin build.ng construction, prod.ct d.velopment, biomed.calinnovation, etc. The increasing applications of 3d.printed.omponents d.pend.primarily on their significant merits ofred.ced.weight, minimum used.materials, high precisionand.shorter prod.ction time. Furthermore, it is very crucialthat such 3d.printed.components can maintain the same oreven better material performance and.prod.ct quality asthose achieved.by conventional manufacturing *** stud. successfully fabricated.3d.printed.mechanicaltesting samples of PLA and.PLA/wood.fibre composites.3d.printing parameters includ.ng infill d.nsity, layer heightand.the number of shells were investigated.via d.sign ofexperiments （d.E）, among which the number of shells wasd.termined.as the most significant factor for maximisingtensile strengths of PLA samples. Further, d.E workevaluated.the effect of material type （i.e., neat PLA and.LA/wood.fibres） and.the number of shells on tensile,flexural and.impact strengths of material samples. It issuggested.that material type is the only pred.minant factorfor maximising all mechanical strengths, which howeverare consistently lower for PLA/wood.fibre compositeswhen compared.with those of neat PLA. Increasing thenumber of shells, on the other hand. has been found.toimprove almost all strength levels and.d.crease infillcavities.

关键词： Ad.itive manufacturing (AM) Poly (lacticacid. (PLA) Wood.fibres Polymer composites d.signof experiments (d.Es)

2024 Wheelchair Compend.um of Physical Activities:An upd.te of activity cod.s and.energy expend.ture values

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Journal of Sport and.Health Science 2024年第1期13卷 18-23页

作者： Scott A.Conger Stephen d.Herrmann Erik A.Willis Tom E.Nightingale Joseph R.Sherman Barbara E.Ainsworth d.partment of Kinesiology Boise State UniversityBoiseID 83725USA Kansas Center for Metabolism and.Obesity Research The University of Kansas Medical CenterKansas CityKS 66160USA Center for Health Promotion and.d.sease Prevention University of North Carolina at Chapel HillChapel HillNC 27599USA School of Sport Exercise and Rehabilitation SciencesUniversity of BirminghamBirmingham AL B152TTUK Centre for Trauma Sciences Research University of BirminghamEdgbastonBirmingham AL B152TTUK College of Health Solutions Arizona State UniversityPhoenixAZ 85003USA School of Exercise and.Health Shanghai University of SportShanghai 200438China

Purpose:This paper presents an upd.te of the 2011 Wheelchair Compend.um of Physical Activities d.signed.for wheelchair users and.is referred.to as the 2024 Wheelchair *** Wheelchair Compend.um aims to curate existing knowled.e of the energy expend.ture for wheelchair physical activities(PAs).Method.:A systematic review of the published.energy expend.ture of PA for wheelchair users was completed.between 2011 and.May *** ad.ed.these d.ta to the 2011 Wheelchair Compend.um d.ta that was compiled.previously in a systematic review through ***:A total of 47 stud.es were includ.d.and.124 d.fferent wheelchair PA reported.energy expend.ture values ranging from 0.8 metabolic equivalents for wheelchair users(filing papers,light effort)to 11.8 metabolic equivalents for wheelchair users(Nord.c sit skiing).Conclusion:In introd.cing the upd.ted.2024 Wheelchair Compend.um,we hope to brid.e the resource gap and.challenge the prevailing narratives that inad.ertently exclud. wheelchair users from physical fitness and.health PAs.

关键词： d.sability Exercise MET Mobility

Tailoring the d.grad.tion rate of magnesium through biomed.cal nano-porous titanate coatings

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Journal of Magnesium and.Alloys 2021年第1期9卷 336-350页

作者： Matthew d.Wad.e jamie McGuire Benjamin V.T.Hanby Red. M.Felfel Ifty Ahmed.d.vid.M.Grant Ad.anced.Materials Research Group Faculty of EngineeringUniversity of NottinghamNG72RD United Kingdom Physics d.partment Faculty of ScienceMansoura UniversityMansoura 35516Egyp

A novel approach was d.veloped.to red.ce the corrosion rate of magnesium(Mg)metal,utilising titanate *** sputtering was used.to d.posit ca.500 nm titanium(Ti)coatings onto pure Mg d.scs,followed.by hyd.othermal conversion and.ion exchange reactions to prod.ce sod.um and.calcium titanate *** confirmed.the characteristic nanoporous structure of sod.um and.calcium titanate,with thicknesses ranging from ca.0.8 to 1.4μ*** analysis confirmed.the presence of Ti^(4+)-O,Na-O,and.Ca-O bond.ng,whilst Raman spectroscopy d.monstrated.characteristic vibrational mod.s(such as TiO 6 octahed.al vibrations)of the sod.um and.calcium titanate perovskite ***,corrosion stud.es through potentiod.namic polarisation measurements d.monstrated.the NB/NH CaTC samples to be superior in red.cing Mg d.grad.tion,compared.to other samples tested.through an increase in E_(corr)from-1.49 to-1.33 V,and.the red.ction in corrosion current d.nsity,i corr,from 0.31 to 0.06 mA/cm^(2)for Mg and.NB/NH CaTC samples,*** was a clear trend.noted.for the NB/NH samples,which showed.an increase in E corr to more positive values in the following ord.r:Mgd.NaTCd.onto d.grad.ble plates for bone fracture fixation,or other orthopaed.c applications.

关键词： Magnesium d.grad.tion Titanate Biod.grad.ble Ion exchange Electrochemical corrosion Magnetron sputtering

Miniaturized.Twin-legged.Robot with an Electromagnetic Oscillatory Actuator

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Journal of Bionic Engineering 2018年第1期15卷 106-113页

作者： Buhyun Shin Youngshik Kim jamie Paik Kyung-min Lee d.partment of Mechanical Engineering Hanbat National University 125 Dongseodaero Yuseong-gu Daejeon 34158 Republic of Korea The Institute of Mechanical Engineering EPFL BM 4118 Station 17 1015-Lausanne Switzerland School of Mechanical Engineering Yeungnam University 280 Daehak-Ro Gyeongsan Gyeongbuk 38541 Republic of Korea

There have been many stud.es on the moving mechanism of micro robots, such as stick-slip, inchworm like motion, and.impact d.ive. Novel actuators like lead.zirconate titanate （PZT）, Shape Memory Alloy （SMA）, magnetostrictive materials, electromagnetic actuators, electoractive polymers, ultrasonic linear motors, and.d.electric elastomers are utilized.to realize the moving mechanism. The use of a conventional electromagnetic actuator is unfavorable, because of a few d.awbacks, such as generation of stray magnetic field., hard.to miniaturize to the millimeter scale because of 3d.integration and.a scaling law, and.power consumption to maintain a certain position. This research presents a micro robot that uses an electromagnetic actuator customized.and.d.veloped.for micro robot. The electromagnetic actuator is d.signed.from a Brushless d.rect Current （BLd.） motor to overcome the d.awbacks mentioned.above. The d.veloped.robot is composed.of two electromagnetic actuators. The overall size of the robot is 20 mm × 11 mm× 9 mm （length × height × wid.h） and.the weight is 3 g. The d.veloped.robot is able to move bid.rectionally with a maximum moving speed.of 15.76 mm·s︿-1 （0.79 bod.-length per second.. The optimal cond.tions of an input signal are calculated.theoretically and.verified.with experiments.

关键词： electromagnetic actuator oscillatory actuator bionic micro robot stick-slip brushless d. motor