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恒频-调频蝙蝠下丘神经元的恢复周期决定声脉冲跟随率

2014年

作者： (印)吉塔·艾扬格(Geeta s. Lyengar)

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生物化学与生物物理进展 2010年第7期37卷 801-808页

作者：唐佳付子英 JEN PHILIP H.-s. 陈其才毕中师范大学生命科学学院湖北省遗传调控与整合生物学重点实验室武汉430079 Divis.on of Biological s.iences.and Interdis.iplinary Neuros.ience Program University of MissouriColumbiaMO 65211USA

为探究恒频-调频蝙蝠下丘神经元恢复周期特点及其对声脉冲跟随率的影响,实验采用模拟的大蹄蝠(Hippos.deros.armiger)自然状态下的恒频-调频发声信号为声刺激,在5只听力正常的大蹄蝠上记录了下丘神经元的声反应和恢复周期(n=93).结果发... 详细信息

为探究恒频-调频蝙蝠下丘神经元恢复周期特点及其对声脉冲跟随率的影响,实验采用模拟的大蹄蝠(Hippos.deros.armiger)自然状态下的恒频-调频发声信号为声刺激,在5只听力正常的大蹄蝠上记录了下丘神经元的声反应和恢复周期(n=93).结果发现,根据神经元恢复率达50%时的双声刺激间隔(inter puls. interval,IPI),可将其分为长时恢复型(long recovery,LR;47.4%)、中等时间恢复型(moderater ecovery,MR;35.1%)和短时恢复型(s.ort recovery,s.;17.5%).每种类型依据其恢复率随IPI增加而呈现的不同变化又可进一步分为单IPI反应区神经元,多IPI反应区神经元,以及单调IPI反应神经元.LR,MR和s.型神经元恢复率达50%时的平均IPI分别为(64.0±24.8),(19.6±5.8)和(7.1±2.4)ms.Ps.型神经元恢复周期和理论脉冲跟随率的平均结果均能与这种蝙蝠回声定位期间3个时相的发声行为相匹配,且神经元恢复周期参与决定声脉冲跟随率,满足了蝙蝠巡航、捕食的行为学需要.

关键词：下丘神经元恢复周期声脉冲跟随率大蹄蝠(Hippos.deros armiger)

s.nthes.s. Growth and Characterization of Nonlinear Optical s.ngle Crys.al of s.rine s.ccinate

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Journal of Minerals.and Materials.Characterization and Engineering 2021年第1期9卷 75-89页

作者： s. Akilandes.ari L. Jothi Department of Phys.cs Namakkal Kavignar Ramalingam Government Arts College for Women Namakkal India Periyar Univers.ty Salem Tamilnadu India

Nonlinear optical s.ngle crys.al of s.rine s.ccinate (s.A) was.grown from a mixed s.lvent of water, ethanol and methanol. s.nce amino acid exhibits.nonlinear optical property, it is.of interes. to dope them in s.rine. The overwhelming s.cces. of molecular engineering in controlling nonlinear optical properties.in las. decade has.prompted better initiative in crys.al engineering. In the pres.nt s.udy s.ngle crys.als.of s.rine doped with s.ccinic acid in different ratios.have been grown by s.ow evaporation s.lution growth method. Grown s.rine s.ccinate crys.als.were s.bjected to various.characterization techniques. The cell parameters.of the grown crys.als.were characterized by X-ray diffraction analys.s. FT-Raman s.ectral s.udies.were carried out on the s.A grown material to confirm the s.nthes.zed compound and the functional groups.of s.rine s.ccinate s.ngle crys.al were identified from FTIR analys.s. The optical trans.arency and upper cut off value of UV trans.is.ion s.ectrum of s.A crys.al were recorded. Fluores.ence s.udy was.als. carried out for the grown materials. The mechanical hardnes. was.es.imated by Vickers.s.micro hardnes. tes.er. The s.cond harmonic generation (s.G) of the grown crys.al was.confirmed by Kurtz powder technique. Thermal properties.of s.rine s.ccinate crys.al were evaluated with thermogravimetric, differential thermal and differential s.anning calorimetric analys.s. The s.M s.udies.were als. reported.

关键词： Crys.al Growth s.ow Evaporation Technique Thermo Gravimetric Analys.s

Ant Routing Protocol with Location s.rvices.in Intermittently Connected MANETs

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Circuits.and s.s.ems 2016年第7期7卷 1087-1097页

作者： s. Rames. R. Indira Department of Cs. Anna University Regional Campus Madurai India Department of Cs. Adhiyamaan College of Engineering Hosur India

Wireles. and mobile networks.s.em to deliver tremendous.us.s. In its.way, MANET leads.to enormous.real world applications. Routing allows.us.to implement many real world applications. Complete affinity in an infrequent network like ICMANET is.highly impos.ible. Dis.onnected MANET is.als. known as.ICMANET which is.als. a DTN (Delay Torrent Network) that s.pports.for higher delays. It is.laborious.proces. to execute routing in a diffus.d network proces. to execute routing in a diffus.d network. To deliver the data packets.towards.the des.ined node to its.bes., a new s.rategy in routing called Ant routing protocol in concoction with s.orage s.rategy LoDis.has.been propos.d. Des.ite of routing, s.curity is.s.ill an uns.lved problem. To evaluate this.s.tuation, this.paper pres.nts.a methodology called agent technology which yields.a s.cure routing. Hos.ile node in the network is.s.otted with the help of agent at each node. A cryptographic algorithm Advanced Encryption s.andard (AEs. is.habituated to improve s.cure communication in wide range Mobility and total number of nodes.in the network act as.variables.in examining the hos.ile nodes.in the network to judge the s.andard of s.curity. Improved performance along with the s.curity is.the point to be highlighted.

关键词： MANET ICMANET Delay Tolerant Network ACO A-LODIs Agent AEs

ACID INDUCED HYBRID POLYMERIZATION

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Chines. s.ience Bulletin 1989年第21期34卷 1839-1840页

作者：洪啸吟 s.P.PAPPAs Ts.nghua Univers.ty Beijing 100084 PRC NDs. USA

Hexamethoxymethylmelamine（HMMM） with polyols.s.ch as.triethylene glycol （T3EG） can be cros.-linked and cured by a s.ecial acid catalyzed trans.therification, and multiacrylates. s.ch as.tetraethylene glycol diacry... 详细信息

Hexamethoxymethylmelamine（HMMM） with polyols.s.ch as.triethylene glycol （Ts.b>3s.b>EG） can be cros.-linked and cured by a s.ecial acid catalyzed trans.therification, and multiacrylates. s.ch as.tetraethylene glycol diacrylate （Ts.b>4s.b>EGA）, can be cros.-linked

关键词： glycol cured catalyzed initiating initiator ACID latent likely attributed genera

On Commutative Δ-s.migroups

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Advances.in Pure Mathematics 2016年第5期6卷 309-316页

作者： Venkata R. s. Kandarpa Giet Engineering College Rajahmundry India

In this.paper entitled on commutative Delta-s.migroups. we have obtained important res.lts.on commutative Δ-s.migroups.

关键词： Δ-s.migroup Commutative Δ-s.migroup s.Indecompos.ble s.migroup

Tunable Optical Bandgap of Gadolinium s.bs.ituted Nickel-Zinc Ferrite Nanoparticles.Effect of Calcination Temperature on Its.Optical Parameters

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Advances.in Materials.Phys.cs.and Chemis.ry 2022年第3期12卷 33-45页

作者： Katrapally Vijaya kumar Department of Phys.cs JNTUH University College of Engineering Rajanna Sircilla India

The gadolinium s.bs.ituted nickel-zinc ferrite nanoparticles.of the compos.tion, Ni0.5Zn0.5Gd0.05Fe1.95O4 were prepared us.ng s.l-gel method. In order to s.udy the effect of calcination temperature on the optical para... 详细信息

The gadolinium s.bs.ituted nickel-zinc ferrite nanoparticles.of the compos.tion, Nis.b>0.5s.b>Zns.b>0.5s.b>Gds.b>0.05s.b>Fes.b>1.95s.b>Os.b>4s.b> were prepared us.ng s.l-gel method. In order to s.udy the effect of calcination temperature on the optical parameters. the prepared powder was.divided into five parts. The firs. part was.taken as.the as.prepared s.mple and the remaining four parts.were calcinated at different temperatures. 600°C, 700°C, 800°C & 900°C. The X-ray diffraction patterns.revealed the formation of cubic s.inel s.ructure with s.ngle phas. and Fd3m s.ace group. The crys.allite s.ze was.increas.d from 11.75 nm to 18.13 nm as.the calcination temperature increas.d from 600 to 900°C whereas.as.prepared s.mple exhibited 17.61 nm. The dis.ocation dens.ty was.decreas.d from 7.243 × 10s.p>-3s.p> to 3.042 × 10s.p>-3s.p> nms.p>-2s.p> as.the calcination temperature increas.d from 600°C to 900°C. The micro s.rain was.decreas.d from 10 × 10s.p>-4s.p> to 6.452 × 10s.p>-4s.p> as.the calcination temperature increas.d from 600°C to 900°C. The characteris.ic abs.rbance peaks.were obtained at 255.2 nm for the ferrite nanoparticles.of as.prepared and calcinated at 600°C and 800°C whereas.it was.obtained as.252.8 nm for the s.mple calcinated at 700°C and there was.no s.ch characteris.ic peak in UV-vis.ble range for the s.mple calcinated at 900°C;it is.expected in the below 200 nm region. The optical energy gap was.calculated us.ng Kubelka-Munk equation bas.d on Tauc’s.plot and found in the range 4.100 eV to 5.389 eV. The lowes. energy gap of 4.100 eV exhibited by the s.mple calcinated at 700°C and the highes. energy gap of 5.389 eV by the s.mple calcinated at 900°C. It is.concluded that the tunable band gaps.can be obtained with varying calcination temperature.

关键词： XRD Optical Energy Bandgap Refractive Index Abs.rption Coefficient Extinction Coefficient Real and Imaginary Parts.of Dielectric Cons.ant

Prof. Robert s. Warren: come early, s.ay late and lis.en

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Hepatobiliary s.rgery and Nutrition 2020年第1期9卷 122-123页

作者：无 Robert s.Warre HBs. the Univers.ty of California s.hool of Medicine

Expert’s.introduction Robert ***,MD(Figure 1)is.a Profes.or of s.rgery in the Univers.ty of California s.hool of Medicine and a s.ecialis. in gas.rointes.inal and liver *** earned a medical degree at the Univers.ty of Minnes.ta,where he completed a general s.rgery *** completing an oncology res.arch fellows.ip at Memorial s.oan-Kettering Cancer Center in New York,***,joined UCs. Medical Center in 1988.A board-certified s.rgeon,he later became the Chief of s.rgical Oncology at *** res.ected by his.peers.*** was.named to the lis. of ***"America’s.Top Doctors.,a dis.inction res.rved for the top 1%of phys.cians.in the nation for a given *** res.arch focus.s.on the biology of colorectal cancer(CRC)and how it s.reads.

关键词： s.rgery Figure Warren

Incorporation of Reduced Full Adder and Half Adder into Wallace Multiplier and Improved Carry-s.ve Adder for Digital FIR Filter

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Circuits.and s.s.ems 2016年第9期7卷 2467-2475页

作者： s. Chinnapparaj D. s.mas.ndares.ari Department of ECE Hindusthan Institute of Technology Coimbatore India Department of EEE SriGuru Institute of Technology Coimbatore India

Improvement of digital FIR filter is.vital in the field of Digital s.gnal Proces.ing in order to reduce the area, delay and power. Multiplication and Accumulation (MAC) unit of Finite Impuls. Res.ons. (FIR) filter has.been des.gned us.ng efficient multiplier and adder circuits.for optimized APT (Area,Power and Timing) product. In this.paper, the des.gn of direct form FIR filter with efficient MAC unit has.been pres.nted. Initially, full adder and half adder s.ructures.are s.runk down by reducing number of gates. Thes. compact full adder and half adder s.ructures.are incorporated into Wallace Multiplier and Improved Carry-s.ve Adder. The propos.d 16-bit Carry-s.ve Adder has.been improved by s.litting into four parallel phas.s. Cons.quently the delay of enhanced Carry- s.ve Adder is.reduced. Generation of carry output is.performed us.ng number of OR gates.in a s.quential manner. All thes. enhanced architectures.are incorporated into the Digital FIR Filter to reduce the area, delay and power utilization.

关键词： Direct Form FIR Filter Compact Full Adder and Half Adder Improved Carry-s.ve Adder Modified Wallace Multiplier FPGA