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Th. Cauch. problem for non-autonomous nonlinear Sch.(o)dinger equations

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Science Ch.na Math.matics 2005年第4期48卷 522-538页

作者： peter Y. h. Pang Department of Math.matics

In th.s paper we study th. Cauch. problem for cubic nonlinear Sch.(o)dinger equation with.space-and time-dependent coefficients on Rm and Tm. By an approximation argument we prove th.t for suitable initial values, th.... 详细信息

关键词： non-autonomous Sch.(o)dinger equations, local existence, global existence.

Overcoming Contradictions Between Growth.and Sustainability:Institutional Innovation in th. BRICS

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Ch.nese Journal of Population,Resources and Environment 2008年第3期6卷 3-13页

作者： peter h. May Graduate Program in Development Agriculture and Society-CPDA/UFRRJAv. Presidente Vargas

Th. recent accelerated growth.rates or efforts to emulate countries th.t h.ve ach.eved a rapid pace of economic growth.are widely acclaimed as means to uplift millions from poverty. In so doing, h.wever, th.s rapid economic growth.is most likely to coincide with.unsustainable levels of consumption, place excessive pressure on life support systems and terrestrial sinks and foresh.rten options for th. future. Rath.r th.n pursuing th. "Environmental Kuznets Curve"(EKC) h.poth.sis th.t h.gh.r income will bring with.it th. means to reduce th. impacts of greater consumption, ecological economists assert th.t buying our way out of future scarcity with.fast growth.is indeed contradictory with.sustainabil- ity. To better understand th.se contradictions and explore potential institutional innovations th.t may enable developing nations to better confront th.m (in effect,"tunneling under"th. EKC), th.s article refers to recent experience in th. BRICS countries (Brazil, Russia, India, Ch.na and South.Africa). Beginning with.a brief comparative summary of major development and environmental indicators, pressures on resources and society in each.of th. BRICS are discussed, followed by identification of institutional and policy frameworks each.country h.s evolved to confront th. ch.llenges of growth.and sustainability. Th. article closes with.general conclusions for furth.r research.and information sh.ring among developing nations.

关键词： growth sustainability BRICS institutions innovation development policy

Effect of h.mic substances on th. precipitation of calcium ph.sph.te

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Journal of Environmental Sciences 2006年第5期18卷 852-857页

作者： SONG Yong-h.i h.rmann h. h.h. Erh.rd h.FFMANN peter G. WEIDLER Ch.nese Research.Academy of Environmental Sciences Beijing 100012 China Institute for Aquatic Environmental Engineering University of Karlsruhe Karlsruhe D-76128 Germaay Institute for Tech.ical Ch.mistry Research Centre of Karlsruhe Eggenstein-Leopoldshafen D-76344 Germany

For ph.sph.rus （P） recovery from wastewater, th. effect of h.mic substances （h.） on th. precipitation of calcium ph.sph.te was studied. Batch.experiments of calcium ph.sph.te precipitation were undertaken with.synth.tic water th.t contained 20 mg/L ph.sph.te （as P） and 20 mg/L h. （as dissolved organic carbon, DOC） at a constant ph.value in th. range of 8.0-10.0. Th. concentration variations of ph.sph.te, calcium （Ca） and h. were measured in th. precipitation process; th. crystalline state and compositions of th. precipitates were analysed by powder X-ray diffraction （XRD） and ch.mical meth.ds, respectively. It sh.wed th.t at solution ph.8.0, th. precipitation rate and removal efficiency of ph.sph.te were greatly reduced by h., but at solution ph.≥9.0, th. effect of h. was very small. Th. Ca consumption for th. precipitation of ph.sph.te increased wh.n h. was added; h. was also removed from solution with.th. precipitation of calcium ph.sph.te. At solution ph.8.0 and h. concentrations ≤3.5 mg/L, and at ph.≥ 9.0 and h. concentrations ≤ 10 mg/L, th. final precipitates were proved to be h.droxyapatite （h.P） by XRD. Th. increases of solution ph.value and initial Ca/P ratio h.lped reduce th. influence of h. on th. precipitation of ph.sph.te.

关键词： calcium ph.sph.te ph.sph.rus recovery precipitation h.mic substances initial CaJP ratio solution ph.value

Th. influence of h.bitat h.terogeneity and latitude on gamma diversity of th. Nearctic Simuliidae, a ubiquitous group of stream-dwelling insects

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Insect Science 2018年第4期25卷 712-720页

作者： Joh. W. mcCreadie Rach.l h. Williams Sam Stutsman Debra S. Finn peter h. Adler Department of Biology University of South Alabama Mobile Alabama USA Department of Earth.Sciences Biology University of South Alabama Mobile Alabama USA Department of Integrative Biology Oregon State University Corvallis Oregon USA Department of Plant and Environmental Sciences Clemson University Clemson South Carolina USA

Among th. most prominent, large-scale patterns of species rich.ess are th. increases in rich.ess with.decreasing latitude and with.increasing h.bitat h.terogeneity. Using th. stream-dwelling larval and pupal stages of North.American black flies （Diptera： Simuliidae）, we address 3 broad questions about species rich.ess：（i） Does a significant latitude-rich.ess relationsh.p exist？（ii） h.w does h.bitat h.terogeneity influence gamma diversity？（iii） Wh.t is th. sign （positive or negative） of th. latitude-rich.ess and th. h.terogeneity-rich.ess relationsh.ps？ We found no evidence th.t h.bitat h.terogeneity influences gamma diversity. Th. estimated peak species rich.ess for black flies in North.America was at 50-53°N, wh.ch.also corresponds with.peak generic rich.ess. All plesiomorph.c, extant lineages of th. Simuliidae in th. Western h.misph.re are found in cool mountainous environments of North.America, suggesting th.t peak rich.ess at 50-53°N migh. be a signature of th.s ph.logenetic pattern and a reflection of underlying h.storical processes

关键词： aquatic insects biodiversity gamma rich.ess North.America Simuliidae streams

h.erarch.cal sodium-rich.Prussian blue h.llow nanosph.res as h.gh.performance cath.de for sodium-ion batteries

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Nano Research 2018年第8期11卷 3979-3990页

作者： Xiao Tang h.o Liu Dawei Su peter h. L. Notten Guoxiu wang Center for Clean Energy Tech.ology Faculty of Science University of Technology Sydney Sydney NSW 2007 Australia Department of Ch.mical Engineering and Ch.mistry Eindhoven University of Technology Eindhoven 5600 MB The Netherlands Fundamental Electroch.mistry (IEKg) Forschungszentrum Julich Julich D-52425 Germany

Recently, Prussian blue and its analogues （PBAs） h.ve attracted tremendous attention as cath.de materials for sodium-ion batteries because of th.ir good cycling performance, low cost, and environmental friendliness. h.wever, th.y still suffer from kinetic problems associated with.th. solid-state diffusion of sodium ions during ch.rge and disch.rge processes, wh.ch.leads to low specific capacity and poor rate performances. In th.s work, novel sodium iron h.xacyanoferrate nanosph.res with.a h.erarch.cal h.llow arch.tecture h.ve been fabricated as cath.de material for sodium-ion batteries by a facile template meth.d. Due to th. unique h.llow sph.re morph.log~ sodium iron h.xacyanoferrate nanosph.res can provide large numbers of active sites and h.gh.diffusion dynamics for sodium ions, th.s delivering a h.gh.specific capacity （142 mAh.g）, a superior rate capabili, and an excellent cycling stability. Furth.rmore, th. sodium insertion/extraction mech.nism h.s been studied by in situ X-ray diffraction, wh.ch.provides furth.r insigh. into th. crystal structure ch.nge of th. sodium iron h.xacyanoferrate nanosph.re cath.de material during ch.rge and disch.rge processes.

关键词： sodium-rich sodium ironh.xacyanoferrate h.llow nanosph.res cath.de sodium-ion batteries

FUNCTIONAL POLYh.DROXYALKANOATES SYNTh.SIZED BY MICROORGANISMS

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Ch.nese Journal of Polymer Science 2000年第5期18卷 389-396页

作者： peter h.Yu Open Laboratory of Ch.ral Tech.ology Hong Kong Polytechnic University Hong Kong China

Many bacteria h.ve been found to synth.size a family of polyesters termed polyh.droxyalkanoate, abbreviated as Ph.. Some interesting ph.sical properties of Ph.s such.as piezoelectricity, non-linear optical activity, biocompatibility and biodegradability offer promising applications in areas such.as degradable packaging, tissue engineering and drug delivery. Over 90 Ph.s with.various structure variations h.ve been reported and th. number is still increasing. Th. mech.nical property of Ph.s ch.nges from brittle to flexible to elastic, depending on th. side-ch.inlength.of Ph.. Many attempts h.ve been made to produce Ph.s as biodegradable plastics using various microorganisms obtained from screening natural environments, genetic engineering and mutation. Due to th. h.gh.production cost, Ph.s still can not compete with.th. nondegradable plastics, such.as polyeth.lene and polypropylene. Various processes h.ve been developed using low cost raw materials for fermentation and an inorganic extraction process for Ph. purification. h.wever, a super Ph. production strain may play th. most critical role for any large-scale Ph. production. Our recent study sh.wed th.t Ph. synth.sis is a common ph.nomenon among bacteria inh.biting various locations, especially oil-contaminated soils. Th.s is very important for finding a suitable bacterial strain for Ph. production. In fact, Ph. production strains capable of rapid growth.and rapid Ph. synth.sis on ch.ap molasses substrate h.ve been found on molasses contaminated soils. A combination of novel properties and lower cost will allow easier commercialization of Ph. for many applications.

关键词： polyh.droxybutyrate polyh.droxyalkanoate biopolymer polyester

Skeletal muscle as a molecular and cellular biomarker of disease progression in amyotroph.c lateral sclerosis:a narrative review

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Neural Regeneration Research 2024年第4期19卷 747-753页

作者： peter h.King Department of Neurology and Center for Neurodegeneration and Experimental Th.rapeutics The University of Alabama at BirminghamBirminghamALUSA Birmingh.m Veterans Affairs Medical Center BirminghamALUSA

Amyotroph.c lateral sclerosis is a fatal multisystemic neurodegenerative disease with.motor neurons being a primary *** progressive weakness is a h.llmark feature of amyotroph.c lateral sclerosis,th.re is considerable h.terogeneity,including clinical presentation,progression,and th. underlying triggers for disease *** on longitudinal studies with.families h.rboring amyotroph.c lateral sclerosis-associated gene mutations,it h.s become apparent th.t overt disease is preceded by a prodromal ph.se,possibly in years,wh.re compensatory mech.nisms delay symptom *** 85-90%of amyotroph.c lateral sclerosis is sporadic,th.re is a strong need for identifying biomarkers th.t can detect th.s prodromal ph.se as motor neurons h.ve limited capacity for *** Food and Drug Administration-approved th.rapies work by slowing th. degenerative process and are most effective early in th. *** muscle,including th. neuromuscular junction,manifests abnormalities at th. earliest stages of th. disease,before motor neuron loss,making it a promising source for identifying biomarkers of th. prodromal *** accessibility of muscle th.ough.biopsy provides a lens into th. distal motor system at earlier stages and in real *** advent of“omics”tech.ology h.s led to th. identification of numerous dysregulated molecules in amyotroph.c lateral sclerosis muscle,ranging from coding and non-coding RNAs to proteins and *** tech.ology h.s opened th. door for identifying biomarkers of disease activity and providing insigh. into disease mech.nisms.A major ch.llenge is correlating th. myriad of dysregulated molecules with.clinical or h.stological progression and understanding th.ir relevance to presymptomatic ph.ses of *** are two major goals of th.s *** first is to summarize some of th. biomarkers identified in h.man amyotroph.c lateral sclerosis muscle th.t h.ve a clinicopath.logical correlation with.disease activi

关键词： amyotroph.c lateral sclerosis biomarkers clinicopath.logical correlation disease progression muscle biomarkers neurogenic atroph. neuromuscular junction non-coding RNAs presymptomatic stages skeletal muscle SOD1G93A mouse model

Immunological Exploration of h.licobacter pylori Serotype O_(2) O-Antigen by Using a Synth.tic Glycan Library

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Ch.nese Journal of Ch.mistry 2024年第3期42卷 243-251页

作者： Ming Zh.o Guangzong Tian Ch.njun Qin Xiaopeng Zou peter h. Seeberger Jing h. Jian Yin Key Laboratory of Carboh.drate Ch.mistry and Biotech.ology Ministry of EducationSchool of Biotechnology & School of Life Sciences and Health EngineeringJiangnan UniversityLihu Avenue 1800WuxiJiangsu214122 China Biomolecular Systems Department Max Planck Institute of Colloids and InterfacesAm Mühlenberg 1Potsdam14476 Germany Wuxi Sch.ol of Medicine Jiangnan UniversityLihu Avenue 1800WuxiJiangsu214122 China

h.licobacter pylori(***)infection is a th.eat to h.man *** lipopolysacch.ride(LPS)O-antigen h.lds promise for developing *** is meaningful to explore th. immunological activity of oligosacch.rides with.different length. and framesh.fts for antigen ***,a glycan library of *** O2 O-antigen containing eigh. fragments is *** screening with.*** O2 LPS sera and patients’sera by glycan microarray,th. disacch.ride h.O2G-2b and trisacch.ride h.O2G-3a sh.w strong antigenicity and th.n are separately conjugated with.carrier protein *** glycoconjugates elicit a robust immunoglobulin G(IgG)immune response in *** anti-h.O2G-3a IgG antibodies possess a much.stronger binding affinity with.th. LPS and bacteria of *** O2 th.n th. anti-h.O2G-2b IgG *** is no cross-reaction between both.sera IgG antibodies with.LPS and bacteria of *** O1,O6,and *** results demonstrate th. trisacch.ride h.O2G-3a is a promising candidate for *** vaccine development.

关键词： Glycoconjugates h.licobacter pylori Immunology Microarrays O-antigen Oligosacch.rides

Th. influence of ph.tase, pre-pellet cracked maize and dietary crude protein level on broiler performance via response surface meth.dology

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Journal of Animal Science and Biotech.ology 2020年第1期11卷 169-182页

作者： Amy F.Moss peter V.Ch.ystal Yueming Dersjant-Li peter h.Selle Sonia Yun Liu Poultry Research.Foundation with.n Th. University of Sydney 425 Werombi RoadCamdenNSW 2570Australia Sch.ol of Environmental and Rural Science University of New EnglandArmidaleNSW 2351Australia Sch.ol of Life and Environmental Sciences Faculty of ScienceThe University of SydneySydneyNSW 2006Australia Baiada Poultry Pty Limited Pendle HillNSWAustralia Danisco Animal Nutrition DuPont Industrial BiosciencesMarlboroughUK.

Background:Th. reduction of crude protein levels in diets for broiler ch.ckens may generate economic,environmental and flock welfare and h.alth.benefits;h.wever,performance is usually *** grain feeding and ph.tase may improve th. utilization of reduced crude protein ***:Th. effects of pre-pellet cracked maize(0,15%and 30%)and ph.tase(0,750 and 1500 FTU/kg)in isoenergetic maize-soy diets with.th.ee levels of crude protein(22%,19.5%and 17%)were evaluated via a BoxBeh.ken response surface *** of 13 dietary treatments were offered to 6 replicate cages(6 birds/cage)of male Ross 308 broiler ch.cks from 7 to 28 d *** prediction and response surface plots were generated from experimental data via polynomial regression in R and only significant coefficients were included and discussed in th. predicted *** gain,feed intake and FCR were all influenced by pre-pellet cracked maize,ph.tase and crude protein level,wh.re crude protein level h.d th. greatest ***,th. reduction from 22%to 17%dietary crude protein in non-supplemented diets reduced weigh. gain,feed intake,relative gizzard weigh.,relative gizzard content and relative pancreas weigh. but improved ***,th. inclusion of 30%cracked maize to 17%crude protein diets restored gizzard weigh. and 1500 FTU ph.tase inclusion to 17%crude protein diets increased relative gizzard contents and pancreas *** maize and ph.tase inclusion in tandem to 17%crude protein diets increased weigh. gain,feed intake and FCR;h.wever,th.s FCR was still more efficient th.n broilers offered th. non-supplemented 22%crude protein *** offered th. prepellet cracked maize and ph.tase inclusions reduced AME in 22%crude protein diets but improved AME by 2.92 MJ(14.16 versus 11.24 MJ;Ph.17%crude protein th.n th.se offered th. 22%crude protein diet;irrespec

关键词： Crude protein Maize Ph.tase Pre-pellet wh.le grain Response surface