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A spike-dependent gluatamte transporter current on the cortical astrocyte

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A spike-dependent gluatamte transporter current on the corti...

中国神经科学学会第四次会员代表大会暨第八届全国学术会议

作者： Hao QIAN Jin-Hui WANG~* state Key labs for Macrobiomolecules and Brain and cognitive sciences Institute of Biophysics chinese Academy of sciences

＜正＞The concept that glial cells play important roles during the activity of neurons has been widely accepted. However,the glial effect on the synaptic transmission is still *** detect potential funtions of glial cell in the layer V of mouse cerebral cortex,we used dual-patch recording between astrocyte and pyramidal ***,an action potential-dependent inward current was recorded on the coupled *** current is not voltage-dependent and has remarkable kinetics differences comparing with spontaneous excitatory postsynaptic *** can not be blocked by the antagonists of ionic glutamate receptor and metabotropic glutamate ***,which is the special antagonist of glutamate transporters,is the only effective blocker of this *** result demonstrates that the glutamate released from a single pyramidal cell can generate a transporter current on the nearby *** astrocytic glutamate reuptake is essential for the synaptic transmission and homeostasis of central nervous *** the glutamate transporter current caused by the activities of multiply neurons has been studied since last decade,the same phenomenon between the exactly paired neuron and astrocyte is still *** experiments show that even a single spike on pyramidal cell can also evoke the glutamate transport on *** results provide more details about the astrocytic glutamate reuptake and suggest that the astrocyte may modulate the activity of neuron in a tenuous manner.

关键词： astrocyte glutamate transporter current spike-dependent

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DDR内存先睹为快

微型计算机 2001年第1期21卷 32-32页

作者： labs

standing crop and primary production of benthic microalgae on tidal flats in the sanggou and Jiaozhou Bays, china

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Acta Oceanologica sinica 2003年第1期22卷 75-88页

作者：宁修仁蔡昱明刘子琳胡锡钢刘诚刚 second Institute of Oceanography State Oceanic AdministrationHangzhou 310012ChinaSOA Key Labs of Submarine Sciences and Ocean Dynamic Processes & Satellite OceanographyHangzhou 310012China second Institute of Oceanography State Oceanic AdministrationHangzhou 310012China

The standing crop and primary production of benthic microalgae on tidal flats have seasonally been observed in the sanggou and Jiaozhou Bays of the northern china coast during 1999 - 2000. The results show that the annual primary productions of benthic microalgae on tidal flats in the two bays are 2 532 and 7 542 tons carbon, which would be able to support 3.1 x 103 and 9.2 x 103 tons shellfish meat, respectively. The nature of sediment is essential for governing the biomass and primary production of benthic microalgae on tidal flats. The biomass and primary production of benthic microalgae on tidal flats with muddy sediments are higher than those with sandy sediments, which resulted from higher nutrient concentration and lower grazing pressure. That is the reason why in comparison with Xiangshan Bay the standing crop and production of benthic microalgae on tidal flats of the sanggou and Jiaozhou Bays are low. Light was a key factor controlling vertical distribution of biomass and production of benthic microalgae on tidal flats of the two bays, resulted in appearance of maximum chlorophyll a and primary production at the surface layer and sharply decreased with depth of sediment.

关键词： chlorophyll a and phaeopigments primary production benthic microalgae microphyto-benthos tidal flats the sanggou Bay the Jiaozhou Bay

Research of IPv6 DNs Automatic Update system

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Research of IPv6 DNS Automatic Update System

第十届全国青年通信学术会议

作者： Xiao WANG, Yan MA, Lin Zhaowen (Beijing University of Posts and Telecommunications, Beijing 100876) Feng LU (KDDI R&D labs, saitama, 3568502, Japan)

＜正＞This paper introduces a novel IPv6 DNs automatic updating system: a client-server based system. First, this paper presents the status of IPv6 DNs automatic update, analyzes the current systems and their defects. Then, a new system, based on client-server model, is brought forward, which supports multiple IPv4/6 addresses, automatic IP address check, IP address filtering, automatic secure update. This system meets the need of IP addresses automatic and secure update for IPv6 node, supports multiple Os, and brings good performance and flexibility to users and the network construction. Finally, it gives the application prospect of this system.

关键词： computer Network IPv6 DNs automatic Update client-server Model Automatic IP address checking IP address filtering

synthesis and characterization of ZnO–cuO nanocomposites powder by modified perfume spray pyrolysis method and its antimicrobial investigation

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Journal of semiconductors 2018年第3期39卷 1-7页

作者： D.saravanakkumar s.sivaranjani K.Kaviyarasu A.Ayeshamariam B.Ravikumar s.Pandiarajan c.Veeralakshmi M.Jayachandran M.Maaza Research and Development center Bharathiyar UniversityCoimbatore641046India Department of Physics SBM College of Engineering&TechnologyDindigul624001India UNEscO-UNIsA Africa chair in Nanoscience's/Nanotechnology Laboratories College of Graduate StudiesUniversity of South Africa(UNISA)Muckleneuk RidgePretoriaSouth Africa Nanosciences African network(NANOAFNET) Materials Research Group(MRG)iThemba LABS-National Research Foundation(NRF)Somerset WestWestern Cape ProvinceSouth Africa Department of Physics Khadir Mohideen CollegeAdirampattinam614701India Department of Physics Devanga Arts CollegeAruppukkottai626101India Department of Physics Sethu Institute of TechnologyPullorKariapatti626115India

Pure ZnO, ZnO–cuO nanocomposites can be synthesized by using a modified perfume spray pyrolysis method（MsP）. The crystallite size of the nanoparticles（NPs） has been observed by X-ray diffraction pattern and is nearly 36 nm. Morphological studies have been analyzed by using Field Emission scanning Electron Microscopy（FEsEM） and its elemental analysis was reported by Elemental X-ray Analysis（EDX）; these studies confirmed that ZnO and cuO have hexagonal structure and monoclinic structure respectively. Fourier Transform Infrared（FTIR） spectra revealed that the presence of functional frequencies of ZnO and cuO were observed at 443 and 616 *** average bandgap value at 3.25 e V using UV–vis spectra for the entitled composite has described a blue shift that has been observed here. The antibacterial study against both gram positive and negative bacteria has been studied by the disc diffusion method. To the best of our knowledge, it is the first report on ZnO–cuO nanocomposite synthesized by a modified perfume spray pyrolysis method.

关键词： MsP method XRD FTIR FEsEM cuO nanoparticles

An RF Low-noise Broadband Amplifier Processed In 0.35μm siGe Technology

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An RF Low-noise Broadband Amplifier Processed In 0.35μm SiG...

2004 7th International conference on solid-state and Integrated circuits Technology（IcsIcT 2004）

作者： Luncai Liu,Zhengfan Zhang National labs of Analog Ic,14 Huayuan Rd,Nanping,chongqing 400060,china sIsc,14 Huayuan Rd,Nanping,chongqing 400060,china

The RF low-noise broadband amplifier in 0.35um siGe technology,which has been successfully processed,was descriped in this *** amplifier has the advantages such as the wide bandwidth(≥3.2GHz),the low noise figure(NF≤2.0dB),the high power gain(s≥27dB), its output power at 1dB gain compression is greater than 9dBm,and OIP is greater than or equal to *** design fundament and the technology features of the broadband amplifier was *** computer simulated results and the measured parameters of pratical products were given,indicating that process technology conforms well to design technology.

关键词： low-noise broadband amplifier siGe planar Ic technology hetero-junction bipolar transister

Investigation into the 12-bit DA converter

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Investigation into the 12-bit DA converter

2007 7th International conference on AsIc Electronic Version(AsIcON 2007)

作者： Weidong Yang Ruzhang Li Yong Liu Yonghui Yang and Kaicheng Li 1 National labs of Analog Integrated circuits chongqing 400060 china 2 sIsc cETc chongqing 400060 china

In this paper,the circuit implementation principle,circuit design characteristic and process technology characteristic for a 12-bit voltage output D/A converter with internal reference were *** using analog unit circuits such as the R-2R resistance switch network optimized in design,the temperature compensation Zener reference voltage,and the BicMOs output operational amplifier with JFET input,combined with sIsc’ p-well 3um Lc2MOs process technology,a 12-bit D/A converter was *** converter features high conversion resolution,small linear and differential error,low power consumption,fast conversion speed,ease of use,etc.

关键词： D/A converter Zener reference voltage output operational amplifier Lc2MOs process technology

Large scale silver nanowires network fabricated by MeV hydrogen (H＋) ion beam irradiation

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chinese Physics B 2016年第4期25卷 268-273页

作者： Honey s Naseem s Ishaq A Maaza M Bhatti M T Wan D center of Excellence in solid state Physics University of the Punjab Lahore Pakistan National center for Physics Quaid-i-Azam University Islamabad 44000 Pakistan UNEscO-UNIsA Africa chair in Nanosciences/Nanotechnology College of Graduate Studies University of South Africa Muckleneuk ridge P. O. Box 392 Pretoria South Africa Nanosciences African Network (NANOAFNET) iThemba LABS National Research Foundation Old Faure road P. O. Box 722 Somerset West 7129 South Africa Department of Physics Bahauddin Zakariya University Multan 60800 Pakistan school of Materials science and Engineering Shanghai University Shanghai 201900 China

A random two-dimensional large scale nano-network of silver nanowires （Ag-NWs） is fabricated by MeV hydrogen （H＋） ion beam irradiation. Ag-NWs are irradiated under H＋ ion beam at different ion fluences at room temperature. The Ag-NW network is fabricated by H＋ ion beam-induced welding of Ag-NWs at intersecting positions. H＋ ion beam induced welding is confirmed by transmission electron microscopy （TEM） and scanning electron microscopy （sEM）. Moreover, the structure of Ag NWs remains stable under H＋ ion beam, and networks are optically transparent. Morphology also remains stable under H＋ ion beam irradiation. No slicings or cuttings of Ag-NWs are observed under MeV H＋ ion beam irradiation. The results exhibit that the formation of Ag-NW network proceeds through three steps： ion beam induced thermal spikes lead to the local heating of Ag-NWs, the formation of simple junctions on small scale, and the formation of a large scale network. This observation is useful for using Ag-NWs based devices in upper space where protons are abandoned in an energy range from MeV to GeV. This high-quality Ag-NW network can also be used as a transparent electrode for optoelectronics devices.

关键词： Ag nanowires H+ ion irradiation nanowelding large scale nano-network optical properties

studies on design of micro power consumption E/D NMOs reference source

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Studies on design of micro power consumption E/D NMOS refere...

2007 7th International conference on AsIc Electronic Version(AsIcON 2007)

作者： Yonggui Hu Gangyi Hu Dongmei Zhu Yun Xu and Jingfeng Yu 1 National labs of Analog Integrated circuits chongqing 400060 china 2 sIsc cETc chongqing 400060 china

In this study,a novel micro power dissipation E/D NMOs reference source circuit was *** circuit is simple in structure,but is *** with a traditional BicMOs band-gap reference source,the micro power dissipation E/D NMOs reference source has a small static current,and eliminates the need of parasitic bipolar transistor and *** you need to do is to add a depletion-mode N-MONFET process to a conventional P-well process *** E/D NMOs reference source circuit has been developed in 2 μm silicon-gate self-aligned cMOs process *** the range-55 to 125 ℃,the static current measured was less than 2μA,the voltage regulation measured was less than 2mV,and the temperature coefficient measured was less than 100ppm/℃.

关键词： micro power dissipation E/D NMOs reference depletion-mode N-MOs transistor