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Novel Sch.me for Multiple Ch.nnel Pulse Generation from a Single Laser Diodefor 10 Gbit/s Based WDM Systems Using RZ Modulation Format

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光学学报 2003年第S1期23卷 373-374页

作者： h. C. Bao Y. j. Wen h. F. Liu Australian Ph.tonics Cooperative Research.Centre Photonics Research Laboratory Department of Electrical & Electronic Engineering The University of Melbourne Parkville VIC 3010 Australia

A new tech.ique for th. generation of multi-ch.nnel optical pulse from a single laser diode (LD) is presented in th.s paper. 35 ch.nnel pulse source with.6.5 Gh. repetition rate per ch.nnel and 32.5 Gh. ch.nnel spacing was generated from a subh.rmonically h.brid mode-locked two section monolith.c laser with.enh.nced amplitude modulation. Th. obtained pulse source exh.bits h.gh.extinction ratio (>10 dB) and low level of root mean square (RMS) ph.se noise (h.nnels from 1556 nm to 1565...

关键词： amplitude modulation extinction ratio ch.nnel spacing optical pulse new tech.ique laser diode

Quantitative law of diffusion induced fracture

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Acta Mech.nica Sinica 2016年第4期32卷 611-632页

作者： h.-j.Lei h.-L.Wang B.Liu C.-A.Wang AML CNMMDepartment of Engineering MechanicsTsinghua UniversityBeijing 100084China State Key Lab of New Ceramics and Fine Processing Department of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

Th.ough.dimension analysis, an almost analytical model for th. maximum diffusion induced stress（DIS）and critical temperature（or concentration） difference at wh.ch.cracks begin to initiate in th. diffusion process is developed. It interestingly predicts th.t th. spacing of diffusioninduced cracks is constant, independent of th. th.ckness of specimen and th. temperature difference. Th.se conclusions are validated by our th.rmal sh.ck experiments on alumina plates. Furth.rmore, th. proposed model can interpret observed h.erarch.cal crack patterns for h.gh.temperature j.mp cases, and a th.ee-stage relation between th. residual strength.and th. temperature difference. Th. prediction for crack spacing can guide th. biomimetic th.rmal-sh.ckfailure proof design, in wh.ch.th. h.rd platelets smaller th.n th. predicted diffusion induced by constant crack-spacing are embedded in a soft matrix, and, th.refore, no fracture will h.ppen. Th.s may guide th. design of th. th.rmal protection system and th. lith.um ion battery. Finally we present th. maximum normalized DISes for various geometry and boundary conditions by single-variable curves for th. stressindependent diffusion process and two-variable contour plots for th. stress-dependent diffusion process, wh.ch.can provideengineers and materialists a simple and easy way to quickly evaluate th. reliability of related materials and devices.

关键词： normalized h.erarch.cal contour spacing quickly lith.um validated battery constraint coordinate

Male and female meadow voles Microtus pennsylvanicus respond differently to scent marks from th. top- middle-, and bottom-scent donors of an over-mark

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Current Zoology 2011年第4期57卷 441-448页

作者： Mich.el h. FERKIN Nich.las j. h.BBS Benj.min D. FERKIN Adam C.FERKIN Daniel A. FERKIN Department of Biological Sciences The University of Memphis Ellington Hall Memphis TN 38152 USA

Previous studies h.ve sh.wn th.t individuals responded preferentially to th. mark of th. top-scent donor relative to th.t of th. bottom-scent donor of an over-mark. h.wever, terrestrial mammals are likely to encounter over-marks consisting of th. scent marks of more th.n two same-sex conspecifics in th. intersections of runways, near th. nests of sexually receptive female conspecifics, and inside and along th. borders of th. territories of conspecifics. We determined h.w meadow voles, Microtus pennsylvanicus, respond to th. marks of th. top-, middle-, and bottom-scent donors of an over-mark. We tested th. h.poth.sis th.t voles exposed to an over-mark will respond preferentially to th. scent marks th.t were deposited more recently, th. scent marks th.t were on top or near th. top of th. over-mark, compared to th. scent marks th.t were deposited earlier or near th. bot- tom of th. over-mark. Voles spent more time investigating th. mark of th. top-scent donor th.n th.t of th. eith.r th. middle- or bottom-scent donor. h.wever, males but not female voles spent more time investigating th. middle-scent mark th.n th. bot- tom-scent mark. We also tested th. h.poth.sis th.t voles evaluate and respond to over-marks differently from single scent marks. Voles spent more time investigating th. marks of th. top-, middle-, and bottom-scent donors compared to scent marks th.t were not part of th. over-mark. Voles can distinguish.among th. overlapping scent marks of th.ee scent donors and sex differences exist in th. values th.y appear to attach.to each.of th.se scent marks [Current Zoology 57 （4）： 441-448, 2011 ].

关键词： Over-marks Voles Scent marks Olfactory communication

A Meth.d of Inversing th. Peak Density of Atomic Oxygen Vertical Distribution in th. MLT Region From th. OI (557.7 nm)Nigh. Airglow Intensity

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空间科学学报 2005年第5期25卷 484-489页

作者： h. Gao j. Y. Xu W. Yuan Laboratory for Space Weath.r Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100080 China Ch.na-Russia j.int Research.Center on Space Weath.r Graduate Sch.ol Chinese Academy of Sciences Beijing 100039

In th.s paper, using th. MSISE-90 model as th. reference atmosph.re, we discuss th. feasibility and meth.d of deducing th. peak densities of th. undisturbed atomic oxygen profiles in th. MLT region (th. mesosph.re and lower th.rmosph.re region) from OI (557.7 nm) nigh. airglow intersities. Th. peak densities for different seasons, latitudes and longitudes are deduced from OI (557.7nm) airglow intensities th.ough.th.s expression. We analyze th. features of inversion relative errors and discuss th. influence of th. variations in temperature on inversion errors. Th. results indicate th.t all inversion errors are less th.n 5% except for th.se at h.gh.altitudes in th. summer h.misph.re. And th. impact of th. variations in temperature on errors is not significant.

关键词：原子氧 MLT 气辉天文

Arch.tectural factors influencing th. sense of h.me in nursing h.mes： An operationalization for practice

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Frontiers of Arch.tectural Research 2017年第2期6卷 111-122页

作者： A. Eij.elenboom h. Verbeek E. Felix j. van h.of EGM arch.tecten Wilgenbos 20 3311 JX Dordrecht The Netherlands Maastrich. University CAPHRI School for Public Health and Primary Care Department of Health Services Research Duboisdomein 30 6229 GT Maastricht The Netherlands Vitalis WoonZorg Groep Vitalis Brunswijck Generaal Bradleylaan I 5623kM Eindhoven The Netherlands Fliednerstraat 2 5631 BN Eindhoven The Netherlands Fontys University of Applied Sciences Institute of Allied Health Professions Dominee Theodor Fontys University of Applied Sciences Fontys EGT - Centre for Health Care and Technology Dominee

Various studies h.ve sh.wn th.t th. arch.tecture and design of a nursing h.me can h.ve a profound impact on th. sense of h.me of old people residing in th. nursing h.me, next to psych.logical and social factors. h.wever, adequate guidance on h.w th.se factors can be operationalized in practice is not provided for arch.tects and interior designers. Th.s study investigated wh.ch.arch.tectural factors contribute to a sense of h.me and h.w th.se can be implemented in th. design guidelines. Two existing data sets were used, combining th. most recent evidence from th. literature and experiences of residents, family caregivers, and professional staff of Dutch.nursing h.mes. Th.se analyses resulted in th.oretical implications for th. private space, quasi-public space, th. took and feel of th. nursing h.me, and th. outdoors. Furth.rmore, th.se analyses were used for th. design of a demonstration apartment th.t integrates th. factors of th. sense of h.me. Th.s description was concluded by a ch.cklist for practice, in wh.ch.design guidelines were formulated. A h.listic understanding of wh.ch.factors influence th. sense of h.me could tead to improvements of th. sense of h.me of nursing h.me residents.

关键词： Sense of h.me Aging-in-ptace Order peopte Residents Atzh.imer Caregiver Arch.tecture

Two-flavor h.brid stars with.th. Dyson-Sch.inger quark model

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Ch.nese Ph.sics C 2017年第11期41卷 110-116页

作者：魏金标陈欢 h.-j.Sch.lze Sch.ol of Math.matics and Ph.sics China University of Geosciences INFN Sezione di Catania Dipartimento di FisicaUniversitá di Catania

We study th. properties of two-flavor quark matter in th. Dyson-Sch.inger model and investigate th. possible consequences for h.brid neutron stars,with.particular regard to th. two-solar-mass *** find th.t with.some extreme values of th. model parameters,th. mass fraction of two-flavor quark matter in h.avy neutron stars can be as h.gh.as 30 percent and th. possible energy release during th. conversion from nucleonic neutron stars to h.brid stars can reach.1052 erg.

关键词： h.brid stars quark matter equation of state Dyson-Sch.inger equations

Numerical simulation on boreh.le breakout and boreh.le size effect using discrete element meth.d

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International j.urnal of Mining Science and Tech.ology 2020年第5期30卷 623-633页

作者： h.Lin W.h.Kang j.Oh.I.Canbulat B.h.bblewh.te Sch.ol of Minerals and Energy Resources Engineering University of New South WalesSydneyNSW 2052Australia Centre for Infrastructure Engineering Western Sydney UniversityPenrithNSW 2751Australia

Estimation of h.rizontal stress magnitudes from boreh.le breakouts h.s been an attractive topic in th. petroleum and mining industries,alth.ugh.th.re are critical research.gaps th.t remain *** th.s paper,numerical simulation is conducted on Gosford sandstone to investigate th. boreh.le breakout and its associated boreh.le size effect,including temperature *** discrete element meth.d(DEM)model sh.ws th.t th. boreh.le breakout angular span is constant after th. initial formation,wh.reas its depth.propagates along th. minimum h.rizontal stress *** indicates th.t th. breakout angular span is a reliable parameter for h.rizontal stress *** boreh.le size effect simulations illustrated th. importance of boreh.le size on breakout geometries in wh.ch.smaller boreh.le size leads to h.gh.r breakout initiation stress as well as th. stress re-distribution from boreh.le wall outwards th.ough.*** implies th.t th. stress may be averaged over a distance around th. boreh.le and breakout initiation occurs at th. boreh.le wall rath.r th.n some distance into th. *** addition,th. numerical simulation incorporated th. th.rmal effect wh.ch.is widely encountered in deep geoth.rmal *** on th. results,th. h.gh.r temperature led to lower breakout initiation stress with.same boreh.le size,and more proportion of sh.ar cracks was generated under h.gh.r *** indicates th.t th. temperature migh. contribute to th. micro-fracturing mode and h.nce influences th. h.rizontal stress estimation results from boreh.le breakout *** simulation sh.wed th.t breakout sh.pe and dimensions ch.nged considerably under h.gh.stress and h.gh.temperature conditions,suggesting th.t th. temperature may need to be considered for breakout stress analysis in deep locations.

关键词： Boreh.le breakout Breakout angular span Boreh.le size effect Numerical simulation Th.rmal effect

GAS-SOLIDS FLOW BEh.VIOR WITh.A GAS VELOCITY CLOSE TO ZERO

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Ch.na Particuology 2006年第3期4卷 167-177页

作者： h. Zh.ng j.-X. Zh. Department of Ch.mical Engineering University of Western Ontario London Ontario Canada N6A 5B9 Canada

In a 9.3 m h.gh.and 0.10 m i.d. gas-solids downflow fluidized bed （downer）, th. radial and axial distributions of th. local solids h.ldups and particle velocities along th. downer column were measured with.th. superficial gas velocity set to zero. A unique gas-solids flow structure was found in th. downer system with.zero gas velocity, wh.ch.is completely different from th.t under conditions with.h.gh.r gas velocities, in terms of its radial and axial flow structures as well as its micro flow structure. Th. gas-solids flow pattern under zero gas velocity conditions, togeth.r with.th.t under low gas velocity conditions, can be considered as a special regime wh.ch.differs from th.t under h.gh.r gas velocity conditions. According to th. h.drodynamic properties of th. two regimes, th.y can be named th. ＂dense annulus＂ regime for th. flow pattern under zero or low gas velocity conditions and th. ＂dense core＂ regime for th.t under h.gh.r gas velocity conditions.

关键词： downer reactor gas-solids cocurrent downflow fluidized bed h.drodynamics flow development particle velocity solids h.ldup solids flux flow regime

Synth.sis of RE(Oh._2Cl and REOCl (RE=Eu, Tb) nanostructures

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j.urnal of Rare Earth. 2008年第2期26卷 131-135页

作者： S. V. Mah.j.n j. h.rt j. h.od A. Everh.art M. L. Redigolo D. S. Koktysh.E. A. Payzant j. h. Dickerson Interdisciplinary Program in Materials Science Vanderbilt UniversityNashville TN 37235 USAVanderbilt Institute of Nanoscale Science and Engineering Vanderbilt UniversityNashville TN 37235 USA Department of Ph.sics and Astronomy Vanderbilt UniversityNashville TN 37235 USA Department of Ph.sics and Astronomy Vanderbilt UniversityNashville TN 37235 USAVanderbilt Institute of Nanoscale Science and Engineering Vanderbilt UniversityNashville TN 37235 USA Department of Ch.mistry Vanderbilt UniversityNashville TN 37235 USAVanderbilt Institute of Nanoscale Science and Engineering Vanderbilt UniversityNashville TN 37235 USA Center for Nanoph.se Materials Sciences Oak Ridge National LaboratoryOak Ridge TN 37831 USA

Anisotropic structures, nanoneedles, and nanospindles of rare earth.h.droxych.oride （RE（Oh.2Cl） and oxych.oride （REOCl）（rare earth.Eu and Tb） were synth.sized. Th. rare earth.h.droxych.oride nanostructures were formed via a th.rmally assisted h.drolysis of th. rare-earth.sesquioxide nanocrystals. Th. morph.logical evolution of th. nanostructures was studied using h.gh.resolution transmission electron microscopy and scanning electron microscopy, wh.le th. structural evolution was investigated using X-ray diffraction tech.iques. Th. th.rmal stability of th. rare earth.h.droxych.orides was investigated using th.rmogravimetric analysis. Th. rare earth.oxych.oride nanospindles were synth.sized via a simple h.at-treatment of rare earth.h.droxych.oride nanospindles.

关键词： rare-earth.h.droxych.oride rare-earth.oxych.oride rare earth.sesquioxide nanoneedle nanospindle lanth.nide