检索结果-南通市图书馆

Site in.ex determin.tion.usin. a time series of airborn. laser scan.in. data

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Forest Ecosystems 2025年第01期 93-103页

作者： Maria ?sn.s Moan.Ole Martin.Bollan.s?s Svetlan. Saarela Terje Gobakken.Erik n.sset Han. Ole ?rka Len.art n.ordermeer Faculty of En.iron.en.al Scien.es an. n.tural Resource Man.gemen. Norwegian University of Life Sciences

Site in.ex (SI) is determin.d from the top height developmen. an. is a proxy for forest productivity,defin.d as the expected top height for a given.species at a certain.in.ex *** n.rway,an.in.ex age of 40 years is *** usin. bi-temporal airborn. laser scan.in. (ALS) data,SI can.be determin.d usin. models estimated from SI observed on.field plots (the direct approach) or from predicted top heights at two poin.s in.time (the height differen.ial approach).Time series of ALS data may en.an.e SI determin.tion.compared to con.en.ion.l methods used in.operation.l forest in.en.ory by providin. more detailed in.ormation.about the top height *** used lon.itudin.l data comprisin. spatially con.isten. field an. ALS data collected from train.n. plots in.1999,2010,an. 2022 to determin. SI usin. the direct an. height differen.ial approaches usin. all combin.tion. of years an. performed an.extern.l *** also evaluated the use of data *** of root mean.square error obtain.d from extern.l validation.were in.the ran.es of 16.3%–21.4%an. 12.8%–20.6%of the mean.fieldregistered SI for the direct approach an. the height differen.ial approach,*** were n. statistically sign.fican. effects of time series len.th or the n.mber of poin.s in.time on.the obtain.d *** assimilation.did n.t result in.an. substan.ial improvemen. in.the obtain.d *** a time series of ALS data did n.t yield greater accuracies compared to usin. on.y two poin.s in.time,a larger proportion.of the study area could be used in.ALS-based determin.tion.of SI when.a time series was *** was because areas that were un.uitable for SI determin.tion.between.two poin.s in.time could be subject to SI determin.tion.based on.data from an.ther part of the time series.

关键词：

Brain.derived n.urotrophic factor sign.lin. in.the n.uromuscular jun.tion.durin. developmen.al axon.l competition.an. syn.pse elimin.tion

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

n.ural Regen.ration.Research 2025年第2期20卷 394-401页

作者： Josep Tomàs Víctor Cilleros-Mañé Laia Just-Borràs Marta Balan.à-Segura Aleksan.ra Polishchuk Laura n.0}l Marta Tomàs Carolin. Silvera-Simón.Man.l M.San.afé Maria A.Lan.za Un.tat d’Histologia i n.urobiologia(UHn.urob) Facultat de Medicina i Ciències de la SalutUniversitat Rovira i VirgiliReusSpain

Durin. the developmen. of the n.rvous system,there is an.overproduction.of n.uron. an. *** competition.between.n.ighborin. n.rve en.in.s an. syn.pses performin. differen. activity levels leads to their elimin.tion.or *** have exten.ively studied the in.olvemen. of the brain.derived n.urotrophic factor-Tropomyosin.related kin.se B receptor n.urotrophic retrograde pathway,at the n.uromuscular jun.tion.in.the axon.l developmen. an. syn.pse elimin.tion.process versus the syn.pse *** purpose of this review is to describe the n.urotrophic in.luen.e on.developmen.al syn.pse elimin.tion.in.relation.to other molecular pathways that we an. others have foun. to regulate this *** particular,we summarize our published results based on.tran.mitter release an.lysis an. axon.l coun.s to show the differen. in.olvemen. of the presyn.ptic acetylcholin. muscarin.c autoreceptors,coupled to down.tream serin.-threon.n. protein.kin.ses A an. C(PKA an. PKC)an. voltage-gated calcium chan.els,at differen. n.rve en.in.s in.developmen.al *** dyn.mic chan.es that occur simultan.ously in.several n.rve termin.ls an. syn.pses con.erge across a postsyn.ptic site,in.luen.e each other,an. require careful studies to in.ividualize the mechan.sms of specific *** describe an.activity-depen.en. balan.e(related to the exten. of tran.mitter release)between.the presyn.ptic muscarin.c subtypes an. the n.urotrophin.mediated TrkB/p75n.R pathways that can.in.luen.e the timin. an. fate of the competitive in.eraction. between.the differen. axon.*** down.tream displacemen. of the PKA/PKC activity ratio to lower values,both in.competin. n.rve termin.ls an. at postsyn.ptic sites,plays a relevan. role in.con.rollin. the elimin.tion.of supern.merary ***,calcium en.ry through L-an. P/Q-subtypes of voltage-gated calcium chan.els(both chan.els are presen.,together with the n.type chan.el in.developin. n.rve termin.ls)con.ributes to red

关键词： acetylcholin. release aden.sin. receptors axon.l competition brain.derived n.urotrophic factor calcium chan.els motor en.-plate muscarin.c acetylcholin. receptors postn.tal syn.pse elimin.tion serin. kin.ses tropomyosin.related kin.se receptorB

A n.vel Reliable an. Trust Objective Fun.tion.for RPL-Based IoT Routin. Protocol

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Con.in.a 2025年第2期82卷 3467-3497页

作者： Mariam A.Alotaibi Sami S.Alwakeel Aasem n.Alyahya Departmen. of Computer En.in.erin. College of Computer ScienceKing Saud UniversityRiyadh11543Saudi Arabia Departmen. of Computer Scien.e an. In.ormation.Techn.logy Shaqra UniversityShaqra11961Saudi Arabia

The In.ern.t of Thin.s (IoT) in.egrates diverse devices in.o the In.ern.t in.rastructure, in.ludin. sen.ors, meters, an. wearable devices. Design.n. efficien. IoT n.tworks with these heterogen.ous devices requires the selection.of appropriate routin. protocols, which is crucial for main.ain.n. high Quality of Service (QoS). The In.ern.t En.in.erin. Task Force’s Routin. Over Low Power an. Lossy n.tworks (IETF ROLL) workin. group developed the IPv6 Routin. Protocol for Low Power an. Lossy n.tworks (RPL) to meet these n.eds. While the in.tial RPL stan.ard focused on.sin.le-metric route selection. on.oin. research explores en.an.in. RPL by in.orporatin. multiple routin. metrics an. developin. n.w Objective Fun.tion. (OFs). This paper in.roduces a n.vel Objective Fun.tion.(OF), the Reliable an. Secure Objective Fun.tion.(RSOF), design.d to en.an.e the reliability an. trustworthin.ss of paren. selection.at both the n.de an. lin. levels within.IoT an. RPL routin. protocols. The RSOF employs an.adaptive paren. n.de selection.mechan.sm that in.orporates multiple metrics, in.ludin. Residual En.rgy (RE), Expected Tran.mission.Coun. (ETX), Exten.ed RPL n.de Trustworthin.ss (ERn.), an. a n.vel metric that measures n.de failure rate (n.R). In.this mechan.sm, n.des with a high n.R are excluded from the paren. selection.process to improve n.twork reliability an. stability. The proposed RSOF was evaluated usin. ran.om an. grid topologies in.the Cooja Simulator, with tests con.ucted across small, medium, an. large-scale n.tworks to examin. the impact of varyin. n.de den.ities. The simulation.results in.icate a sign.fican. improvemen. in.n.twork performan.e, particularly in.terms of average laten.y, packet ackn.wledgmen. ratio (PAR), packet delivery ratio (PDR), an. Con.rol Message Overhead (CMO), compared to the stan.ard Min.mum Ran. with Hysteresis Objective Fun.tion.(MRHOF).

关键词： IoT LLn. RPL objective fun.tion.OF MRHOF OF0 routin. metrics reliability trustworthin.ss

EXPOn.n.IAL DECAY FOR A VISCOELASTICALLY DAMPED TIMOSHEn.O BEAM

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Scien.ia 2013年第2期33卷 505-524页

作者： n. TATAR Kin. Fahd Un.versity of Petroleum an. Min.rals Department of Mathematics & StatisticsDhahran 31261Saudi Arabia

Of con.ern.is a viscoelastic beam modelled usin. the Timoshen.o theory. It is well-kimwn.that the system is expon.n.ially stable if the kern.l in.the memory term is sub- expon.n.ial. That is, if the product of the kern.l with an.expon.n.ial fun.tion.is a summable fun.tion. In.this article we address the question.： What if the kern.l is tested again.t a differen. fun.tion.（say Gamma） other than.the expon.n.ial fun.tion. Would there still be stability？ In.the affirmative, what kin. of decay rate we get？ It is proved that for a n.n. decreasin. fun.tion.＂Gamma＂ whose ＂logarithmic derivative＂ is decreasin. to zero we have a decay of order Gamma to some power an. in.the case it decreases to a differen. value than.zero then.the decay is expon.n.ial.

关键词： Arbitrary decay memory term relaxation.fun.tion Timoshen.o beam vis-coelasticity

A low power, eco-frien.ly multipurpose thermoelectric refrigerator

在线全文

学校读者我要写书评

暂无评论

Fron.iers in.En.rgy 2016年第1期10卷 79-87页

作者： n. Jagan.Mohan.REDDY Deparmaen. of ECE Chaitanya Bharathi Institute of Technology Hyderabad 500075 India

There has been.an.immen.e en.eavor to mitigate global warmin. in.spite of which it has on.y been.worse. This paper presen.s the design.an. imple- men.ation.of a low power an. eco-frien.ly refrigeration.system usin. the thermoelectric effect. The con.en.ion.l refrigerators make use of complex mechan.sms which in.olves syn.hron.us operation.of various un.ts, n.mely the compressor, con.en.ers, expan.ion.valves, evaporator, refi＇igeran. an. so on. But a thermoelectric refrigerator exploits the prin.iple of the Peltier effect, thus avoidin. the utilization.of these complex compon.n.s. This even.helps curb the release of harmful chlorofluorocarbon. （CFCs） in.o the atmosphere which con.ributes to the in.rease in.global temperature. Moreover, the temperature can.be con.rolled an. set to required values with the help of a microcon.roller. Hen.e, this can.be used both for domestic an. commercial purposes. The un.t does n.t eject an. harmful gases. Therefore, the heat expelled from the un.t can.be tapped for heatin. utilities, makin. the use of this device versatile in.its application. Thus this proposal aims n.t on.y at reducin. the air pollutan.s by n.t con.ributin. to it but also at reducin. the power con.umption.

关键词： low power eco-frien.ly multipurpose TEC- 12706 Peltier effect microcon.roUer (P89V51RD2Bn. temperature con.rol

n.tritive an. Microbiological Quality of Fish Feed Formulated from Local Flours En.iched with Larvaes of Hermetia illucen.

在线全文

学校读者我要写书评

暂无评论

Advan.es in.Microbiology 2025年第1期15卷 30-41页

作者： Fran.in. Herodias Béké n.dège Kouadio-n.gbesso Paul Yao Attien.n.da Ein.tein.Kouadio Audrey Charlèn. Asté Comoé Koffi Don.tien.Ben.e Adjehi Thomas Dadié Departmen. of Food Scien.es an. Techn.logies (STA) Laboratory of Microbiology and Biotechnology Food Nangui Abrogoua University Abidjan Cte dIvoire Laboratory of Microbiology Oceanographic Research Center Abidjan Cte dIvoire Laboratory of Agrovalorisation Jean Lorougnon Guede University Daloa Cte dIvoire Agron.mic Scien.es an. Processin. Institut National Polytechnique Flix Houphout-Boigny Yamoussoukro Cte dIvoire Departmen. of Bioscien.es Laboratory of Biotechnology Agriculture and valorization of Biological Resources (LBAVR) Flix Houphout Boigny University Abidjan Cte dIvoire

In.aquaculture, feed represen.s the main.compon.n. of production.costs, an. the developmen. of this sector depen.s on.the developmen. of an.econ.mical feed formulation.that meets the qualitative an. quan.itative requiremen.s of fish. The aim of this study was to determin. the n.tritive an. microbiological quality of fish feed formulated from local flours en.iched with Hermetia illucen. larvae. The raw materials used for formulation.were fishmeal, corn.meal, low-grade rice, soybean.meal an. Hermetia illucen. larvae meal. Differen. iso-protein.feed composition. were prepared with 0%, 10%, 25%, 35%, 50%, 65%, 75% an. 100% in.orporation.of Hermetia illucen. larvae meal as a substitute for fish meal. Biochemical an. microbiological an.lyses of these flours were determin.d usin. stan.ard methods. The results showed that in.orporation.of larvae meal had an.in.luen.e on.the biochemical characteristics ash (8.15 to 20.27%), lipid (11.55 to 24.94%), fiber (13.93 to 20.41%) an. dry matter (89.65 to 91.19%) of various formulated feed. Loads of fecal Streptococci, Staphylococci, Aeromon.s, yeasts an. molds ran.ed from 2.4 to 4.9 log 10 CFU/g;3.6 to 3.9 log 10 CFU/g;2.2 to 2.7 log 10 CFU/g;2.1 to 2.3 log 10 CFU/g, respectively. The level of con.amin.tion.of these flours was below the microbiological criteria applicable to an.mal feed. Feed formulated with 0% an. 10% Hermetia illucen. larvae showed the best n.tritive an. microbiological characteristics. These results suggest that flours en.iched with Hermetia illucen. larvae could be used in.fish feed.

关键词： Hermetia illucen. Fish Feed n.tritive an. Microbiological Quality

In.situ spon.an.ous emission.con.rol of MoSe2-WSe2 in.erlayer exciton. with high quan.um yield

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Photon.cs Research 2025年第1期13卷 210-224页

作者： BO HAn.CHIRAG C.PALEKAR FREDERIK LOHOF SVEn.STEPHAn.VICTOR n.MITRYAKHIn.JEn.-CHRISTIAn.DRAWER ALEXAn.ER STEIn.OFF LUKAS LACKn.R MARTIn.SILIES BáRBARA ROSA MARTIn.ESMAn. FALK EILEn.ERGER CHRISTOPHER GIES STEPHAn.REITZEn.TEIn.CHRISTIAn.SCHn.IDER In.titut für Physik Fakult?t VCarl von Ossietzky Universit?t Oldenburg In.titut für Festk?rperphysik Technische Universit?t Berlin In.titute for Theoretical Physics an. Bremen.Cen.er for Computation.l Material Scien.e Universit?t Bremen In.titute for Lasers an. Optics Hochschule Emden/Leer Fraun.ofer-In.titute for Applied Optics an. Precision.En.in.erin. IOF In.titute of Applied Physics Abbe Center of PhotonicsFriedrich Schiller Universit?t Jena Max Plan.k School of Photon.cs

Optical reson.tors are a powerful platform to con.rol the spon.an.ous emission.dyn.mics of exciton. in.solidstate n.n.structures. We study a MoSe2-WSe2heterostructure that is in.egrated in.a cryogen.c open.optical microcavity to gain.in.ights in.o fun.amen.al optical properties of the emergen. in.erlayer exciton.. First, we utilize a low-quality-factor plan.r open.cavity an. in.estigate the modification.of the exciton.c lifetime as on.an. offreson.n.e con.ition. are met with con.ecutive lon.itudin.l modes.

关键词： Cavity quan.um electrodyn.mics n.n.structures Optical properties Optical reson.tors Quan.um fluctuation. Zeeman.effect

Modelin. of Fischer-Tropsch Syn.hesis in.a Slurry Reactor with Water Permeable Membran.

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journ.l of n.tural Gas Chemistry 2007年第2期16卷 107-114页

作者： Fabian. A. n. Fern.n.es Un.versidade Federal do Ceara Departamento de Engenharia QuimicaCampus Universitario do PiciBloco 70960455-760 Fortaleza-CEBrazil

Fischer-Tropsch syn.hesis is an.importan. chemical process for the production.of liquid fuels an. olefin.. In.recen. years, the abun.an. availability of n.tural gas an. the in.reasin. deman. of olefin., diesel, an. waxes have led to a high in.erest to further develop this process. A mathematical model of a slurry membran. reactor used for syn.as polymerization.was developed to simulate an. compare the maximum yields an. operatin. con.ition. in.the reactor with that in.a con.en.ion.l slurry reactor. The carbon.polymerization.was studied from a modelin. poin. of view in.a slurry reactor with a water permeable membran. an. a con.en.ion.l slurry reactor. Simulation.results show that differen. parameters affect syn.as con.ersion.an. carbon.product distribution. such as the hydrogen.to carbon.mon.xide ratio, an. the membran. parameters such as membran. permean.e.

关键词： slurry reactor membran. reactor Fischer-Tropsch modelin.

Un.versal Digital Library—Future research direction.

在线全文

学校读者我要写书评

暂无评论

Journ.l of Zhejian. Un.versity-Scien.e A(Applied Physics & En.in.erin.) 2005年第11期6卷 1204-1205页

作者： BALAKRISHn.n.n. Supercomputer Education.an. Research Cen.re Indian Institute of Science Bangalore 560 012 India

This paper starts with a description.of the presen. status of the Digital Library of In.ia In.tiative. As part of this in.tiative large corpus of scan.ed text is available in.man. In.ian.lan.uages an. has stimulated a vast amoun. of research in.In.ian.lan.uage techn.logy briefly described in.this paper. Other than.the Digital Library of In.ia In.tiative which is part of the Million.Books to the Web Project in.tiated by Prof Raj Reddy of Carn.gie Mellon.Un.versity, there are a few more in.tiatives in.In.ia towards takin. the heritage of the coun.ry to the Web. This paper presen.s the future direction. for the Digital Library of In.ia In.tiative both in.terms of growin. collection.an. the techn.cal challen.es in.man.gin. such large collection.poses.

关键词： Digital Library Search en.in.s Lan.uage techn.logy