TETRA相关论文
无线通信技术经历了模拟通信、数字通信以及现在广泛应用的宽带通信,文章针对专网通信从窄带到宽带制式的演变,对城市轨道交通几种......
陆上集群无线电(Terrestrial Trunked Radio,TETRA)数字集群通信系统因其开放性易受到内外部电磁干扰.干扰信号的类型多种多样,针......
集群共网宽带演进是趋势使然.从业务性能、安全保障和互通可达性等方面论述了5G承载集群通信业务并与TETRA融合的可行性,根据“宽......
本文分别介绍了GSM网和TETRA网的安全特性，从鉴权、空中接口的加密以及密钥的管理等多方面对两者进行了分析和比较。......
随着二十一世纪我国铁路的现代化进程,对铁路无线移动通信系统提出了更高的业务需要和技术要求,我国迫切需要建立一个能够满足铁路......
梳理了国内外无线政务网发展概况,分析其网络演进和运营中的问题。通过对当前国内无线政务网业务及其对网络的需求考察,论证政务专......
备受关注的北京市数字集群无线政务网作为重点展示项目,在第六届“中国北京国际科技产业博览会”上首次演示了指挥调度的各种应用......
DECARBOXYLATION DURING THE FORMATION OF THE FLUORESCENT NAD~+ DERIVATIVE OF GLYCERALDEHYDE-3-PHOSPHA
<正> We have previously reported that UV irradiation of the active site Cys-149 carboxymethylated glyceraldehyde-3-phosp......
AN IRREVERSIBLE OPIOID RECEPTOR AGONIST WITH ULTRALONG ANALGESIC EFFECT: 7a-BIS (β-CHLORO ETHYL) AMI
<正> To characterize the multiple types of opioid...
THE CRYSTAL STRUCTURE OF TETRA-AMMINE COMPLEX OF COPPER （Ⅱ） SILVER （Ⅰ） TRITHIOCYANATE Cu（NH3）4Ag（SCN
<正> In order to further investigate the characteristics of the structural chemistry of thiocyanate complexes, we starte......
<正> A fluoro-alkyl-bonded phase as HPLC packing has been prepared from silica （5μ） with 1, 2,-tetra-hydro 7-trifluoro me......
新中国的工业蓬勃的发展着,常見的职业病如鉛中毒在所难免;因而它的診断及治疗也就成为目前嶄新的課題。几年以前我們还沒有很成......
Charge transport properties of F, OH, OCH3, SH and SCH3-substituted tetra- benz[a,c,h,j]- anthracene derivative molecule......
The title complex,6,6-(3,3,5,5-tetra-tert-butylbiphenyl-2,2-diyl)bis(oxy)di-di-benzo[d,f]-[1,3,2] dioxaphosphepine(C52H5......
Extraction and separation of thorium and rare earths with 5,11,17,23-tetra (diethoxyphosphoryl)-25,2
A calixarene derivative, 5,11,17,23-tetra(diethoxyphosphoryl)-25,26,27,28-tetraacetoxycalix[4]arene (L), was studied for......
Enhancing Effect of Fe~(2+) on the Formaldehyde Production from Trimethylamine N-oxide Decomposition
The effects of Fe2+ on the trimethylamine N-oxide (TMAO) demethylating activity of the Harpadon nehereus kidney extract ......
The preparation of terephthalic acid by solvent-free oxidation of p-xylene with air over T(p-C1)PPMn
An attempt has been made to prepare terephthalic acid(TPA) by solvent-free oxidation of p-xylene(PX) with air over tetra......
A facile synthetic route of 5-formylporphyrin(2) has been developed.Using pyrrole and pivaldehyde as the starting materi......
A novel 4-anilinoquina/oline dimer linked by a carbon-carbon bond in the C-7 position was synthesized via a one step Suz......
Crown ether-appended Fe(Ⅲ) porphyrin:Synthesis,characterization and catalytic oxidation of cyclohexe
A new crown ether appended Fe(Ⅲ) porphyrin complex was prepared by sulfuryl chloride appended benzo-15-crown-5 to the m......
A Cu(II) complex of tetra(3,5-diphenyl pyrazole) [Cu(C15H12N2)2Cl2]2 (1) was synthesized, and its structure was determin......
Synthesis and Crystal Structure of 1,4,7,10-Tetrakis-(2-(2,3-difluorophenyl)-ethyl)-1,4,7,10-tetraaz
The new compound 1,4,7,10-tetrakis-(2-(2,3-difluorophenyl) ethyl) -1,4,7,10-tetra-zacyclododecane 2 has been synthesized......
Hydrothermal Synthesis and Crystal Structure of a Cobalt(II) Coordination Polymer: [Co(C_2O_4)(bix)]
A new two-dimensional cobalt coordination polymer has been prepared and fully characterized by elemental analysis, IR, T......
Enhanced electrocatalytic oxidation of dyes in aqueous solution using cobalt phthalocyanine modified
Cobalt tetra(2,4-dichloro-1,3,5-triazine)aminophthalocyanine(CoPc)was immobilized covalently on activated carbon fiber(A......
A novel phthalocyanine,2,9(10),16(17),23(24)-tetra(4-benzoyl)phenoxyphthalocyanine,and its complexes with Zn(II),Cu(II),......
Synthesis and optoelectronic properties of a novel molecular semiconductor of dithieno[5,6-b:11,12-b
A facile procedure for the synthesis of dithieno[5,6-b:11,12-b0]coronene-2,3,8,9-tetracarboxylic tetra(2-ethylhexyl)este......
A convenient and efficient protocol for the synthesis of unnatural N-glycosyl a-amino acids was developed.Condensation o......
Straight-chain aliphatic terr-amine N-oxides were found to be useful oxidizing agent for epoxidation of tri- and tetra-s......
Synthesis of an antimetastatic tetrasaccharide β-D-Gal-(1→4)-β-d-GlcpNAc-(1→6)-α-D-Manp-(1→6)-β-D-Ma
An antimetastatic tetrasaccharide T_1,β-D-Gal-(1→4)-β-D-GlcpNAc-(1→6)-α-D-Manp-(1→6)-β-D-Manp-OMe,was synthesized......
A facile method for the synthesis of 2,3,3’,4’-biphenyltetracarboxylic dianhydride(a-BPDA) was reported,which comprise......
Characterization of self-assembled monolayers of porphyrins bearing multiple-thiol and photoelectric
Self-assembled monolayers(SAMs) of thiol-derivatized porphyrin molecules on Au substrate have attracted extensively inte......
Modeling phase equilibria of semiclathrate hydrates of CH_4,CO_2 and N_2 in aqueous solution of tetr
Semiclathrate hydrates of tetra-n-butyl ammonium bromide(TBAB) offer potential solution for gas storage,transportation,s......
Tetra-alkyl-substituted 3-oxa-pentadiamides(TROGA)is promising at separating actinides from lanthanides.Composed by carb......
A tetra(pyrid-2-yl)-pyrazine-bridged cyclometalated diosmium complex 1(PF6)2with two distal redoxactive organic amine su......
This paper is proposed to understand the interaction of porphyrin layers with diatomic molecules interacting at their in......
Synthesis of nucleoside tetraphosphates and dinucleoside pentaphosphates from nucleoside phosphoropi
A novel and efficient method for the preparation of nucleoside 5’-tetraphosphates has been developed by coupling nucleo......
Three alcohol/water-soluble porphyrins,Zn-TPy PMe I:zinc(II)meso-tetra(N-methyl-4-pyridyl)porphyrin tetra-iodide,ZnTPy P......
Synthesis, Crystal Structure and Luminescent Property of a Dinuclear Cadmium Complex Based on 1,2,3,
A complex [Cd2(tbb)Cl4]·4DMF·3H2O, where tbb is 1,2,3,4-tetra(1H-benzo[d]imidazol-2-yl)butane, was synthesized and cha......
An assembly of Keggin polyoxomolybdate and organic substrate(Hbipy)_3[PMo_(12)O_(40)](1,bipy=2,2’-bipyridine) was synth......
An effcient one-pot multi-component synthesis of 3,4,5-substituted furan-2(5H)-ones catalyzed by tet
A facile one-pot synthesis of 3,4,5-substituted furan-2(5H)-one derivatives from a three-component reaction of aniline d......
机动车污染物排放是我国大气复合污染形成的重要原因之一.尽管柴油车在我国机动车保有量中所占比例不到20%,但其排放的颗粒污染物(......
Hydrothermal Synthesis and Characterization of a Sandwich-type Tungstophosphate, (1,3-H_2dap)_8H_4[C
A sandwich-type tungstophosphate, (1,3-H_2dap)_8H_4[Co_4(H_2O)_2(α-B- PW_9O_(34))_2]_2·5H_2O (1,3-dap = 1,3-diaminopro......
A simple and quick method for the synthesis of water dispersible stable silver nanoparticles has been developed. Calix[4......
The interaction of Hg(Ⅱ), Cu(Ⅰ) and Ag(Ⅰ) with dipyridine quinoxaline ligand 2,3-bis(2-pyridyl)quinoxaline(DPQ) were ......
A density functional plane-wave pseudopotential method is used to study the doping mechanisms of impurity defects(Bi_(Ba......
Three New Zn(Ⅱ)/Cd(Ⅱ) Coordination Polymers Constructed with 2-Mercaptonicotinic Acid and 1,2-Di(4-p
Three new Zn(Ⅱ)/Cd(Ⅱ) coordination polymers based on 2-mercaptonicotinic acid (H2mna) with 1,2-di(4-pyridyl)ethylene (......
Efficient heterojunction organic photovoltaic(OPV) cells are fabricated based on copper tetra-methyl phthalocyanine(CuMe......
Multifunctional iodoaryl monomers were used for the catalyst-and solvent-free generation of microporous polymer networks......
A new perchlorate salt of metalloporphyrin, {H_3[CuTPyP]}(ClO4)_3(2, H_2TPyP = 5,10,15,20-tetra-4-pyridyl-21 H,23H-porph......
Four metallodithiolene complexes[4,8-bis(octyloxy)-1,3,5,7-tetrathia]?di[1,1′-bis(diphenylphosphino)ferrocene?palladium......
