substitution相关论文
Based on density functional theory(DFT)and time-dependent density functional theory(TD-DFT),the effects of substituent o......
Synthesis and visible-light-induced sacrificial photocatalytic water oxidation of quinary oxynitride
Quinary oxynitride BaNb0.5Ta0.5O2N crystals were fabricated through the partial nitridation and acidification of the KCl......
In the minerals of bones and teeth of human beings, various elements are incorporated into hydroxyapatite (HA) crystals ......
埋入式传感器在混凝土结构的健康监测中应用日益广泛,但其有效寿命远低于结构的使用寿命,不能实现对结构的全周期监测.本文提出了......
Molecular Mechanism of Mesosulfuron-methyl Resistance in Multiple-resistant American Sloughgrass (Be
American sloughgrass (Beckmannia syzigachne Steud.) is a troublesome grass weed in winter wheat fields after rice in Chi......
A newly isolated bacterium,Stenotrophomonas sp.strain WZN-1 was capable of simultaneous substitution and hydroxylation o......
Zeolitic imidazole frameworks(ZIFs)are an important class of porous crystalline metalorganic framework(MOF)materials tha......
In addition to π-linkages and acceptors,the nature of donor moiety plays a vital role in tuning organic dye performance......
Borondipyrromethenes (BODIPY) as useful fluorophores have attracted much attention over the past two decades because of ......
Theoretical Investigation on Isotachophoresis in Bi-Moving Reaction Boundary system Formed with Doub
A novel separation mode of isotachophoresis (ITP) was observed in the experiments on a moving chelation boundary (MCB) s......
The Study of the Behaviors of Zinc and Strontium in Caries-Affected Teeth by Laser-Induced Breakdown
...
Enhanced hydrogen evolution reaction in Sr doped BiFeO_(3) by achieving the coexistence of ferroelec
The perovskite transition metal oxide(TMO) has been considered in electrocatalysis for the modern clean energy technolog......
Fluorine substitution position effects on spiro(fluorene-9,9’-xanthene) cored hole transporting mate
Fluorine substitution in molecular design has become an effective strategy for improving the overall performance of orga......
The effect of electrochemically inactive Ti substituted for Ru in Li_(2)Ru_(1-x)Ti_xO_(3) on structu
The approach of substituting electrochemically active with inactive elements has widely been used to improve the electro......
Compensation of Zn substitution and secondary phase controls effective mass and weighted mobility in
Conductivity s and thermal conductivity k are directly related to carrier concentration while Seebeck coefficient S is i......
Alkyl dinitrites have at-tracted attention as an im-portant type of nitrosating agent and a pollution source in atmosphe......
The strength and microstructural analysis of recycled geopolymer are presented in this paper.Five kinds of geopolymers c......
A density functional theory (DFT) study has been conducted to investigate the distribution of Al atom in the framewo......
In recent years,the interest in studying modification of pectin has increased.A number of hydroxyl and carboxyl grou......
Analysis of the effect of changes in fluid properties of rocks on the compressional-wave velocity VP and shear-wave velo......
<正> Dipolar aprofic solvents, for example, the dimethyl sulfoxide (DMSO), is known to be a strong alkali metal ions sol......
DISTRIBUTION RULE OF FERROELECTRICS WITH PEROVSKITE TYPE STRUCTURE AND ITS PREDICTION OF MACROSCOPIC
<正> Ⅰ. INTRODUCTION The region in which ferroelectries exist with the perovskite type structure is presented in Ref. [......
<正> Through reductive addition of pheny llithium to μ—S2Fe2 （CO）6 and nucleophilic substitution between alkyl halides a......
Since the discovery of BiSrCaCuO superconductor, for stabilizing and promoting the formation of high T<sub>c</sub> 2223 ......
The effects of the partial substitution of element M(M=Cr,V,Mn,x=0.05;Zr,Ga,x=0.017;Si,x=0.15;Co,x=0.10)for Fe in samar......
A modified Newton-Raphson method is presented in this paper.It consists of introducing relaxationfactor ω and paramete......
Consider the subshifts induced by constant-length primitive substitutions on two symbols. By investigating the equivalen......
Let K be a field of characteristic zero and M3(K) the ring of matrices 3 x 3 over K. In this paper, we establish first t......
Effects of vanadium(V)-substitution on the oxidative properties of α-Keggin-type heteropolyanion clu
The redox properties of α-Keggin-type heteropolyanion clusters [XM12O40]n-(X = Si,P; M = Mo,W) mainly depend on their c......
Development and characterization of a new barley yellow dwarf virus (BYDV)-resistant wheat germplasm
A barley yellow dwarf virus (BYDV)-resistant line HG295 was selected from a cross between cv. 77-5433 and Zhong 5 after ......
New pH-responsive saccharide hydrogels were designed and prepared using curdlan derivatives(curdlan-Bochistidine, CUR-HI......
Preparation, Characterizations and Magnetic Properties of Doped Barium Hexaferrites BaFe_(12-2x)Mn_x
A series of doped barium hexaferrites BaFe12-2xMnxSnxO19 (x = 0.0-1.0) particles were prepared by the co-precipitation/m......
Upon substitution of Sn for Zn,the Curie temperature of Mn 3 ZnC is lowered from 380 to 375 K for Mn 3 Zn 0.95 Sn 0.05 C......
The structures and thermal expansion properties of Lu2-xFexMo3O12 have been investigated by X-ray diffraction(XRD).XRD p......
Rare earth iron garnets R3Fe5-x Mn x O12(R=Pr,Nd,Sm,Eu) were prepared through mild hydrothermal method.The initial alkal......
DEGREE OF BRANCHING OF THE HYPERBRANCHED POLYMERS RESULTED FROM AB_2 POLYCONDENSATION WITH SUBSTITUT
The analytical expressions of the various structural units and the average degree of branching for the hyperbranched pol......
The effect of Nb doping on the oxygen permeation and stability of SrCo_(0.8)Fe_(0.2)O_(3-δ)(SCFO) was investigated comp......
ETHYLENE/1-HEXENE COPOLYMERIZATION BY SALICYLALDIMINATO VANADIUM(Ⅲ) COMPLEXES ACTIVATED WITH DIETHYL
Mono salicylaldiminato vanadium(Ⅲ) complexes(1a-1f)[RN = CH(ArO)]VCl_2(THF)_2(Ar = C_6H_4(1a-1e),R = Ph,1a;R = p-CF_3Ph......
The double perovskite oxides Sr2Mg1-xF exMoO6-δ were investigated as catalysts for the methane oxidation.The structural......
With the B3LYP calculation method of density functional theory(DFT)and the 6-31G* basis set,full optimization calculatio......
A series of ternary perovskite type oxides LaNi1-xCuxO3(x = 0.2,0.4,0.6,0.8,and 1.0) were synthesized via the sol-gel me......
Enhancement of luminescence and afterglow in Ca_(0.8)Zn_(0.2)TiO_3:Pr~(3+) by Nb~(5+) substitution f
Nb5+ doped Ca0.8Zn0.2TiO3:Pr3+ red long afterglow phosphors were synthesized by solid-state reaction methods. X-ray diff......
The effect of Gd content on microstructure and magnetic properties of sintered Nd33.03-xGdxFe65.65B1.32 (x=0-2) was stud......
Nucleophilic aromatic substitution of hydrogen in non-activated aromatic ring,a very rare phenomenon in organic chemistr......
The luminescence intensity of emission peak at around 525 nm decreased in the Ce3+ and Er3+ co-doped Ca3Sc2Si3O12 phosph......
Olivine structured LiFePO 4 /C (lithium iron phosphate) and Mn 2+ -doped LiFe 0.98 Mn 0.02 PO 4 /C powders were synthesi......
Effect of electron traps on long afterglow behavior of Sr_3Al_2O_6:Eu_(0.01)~(2+),Dy_(0.02-x)~(3+),H
The long persistent phosphors Sr3Al2O6:Eu0.012+,Dy0.02-x3+,Hox3+ (x=0, 0.01, 0.02) were prepared by a high temperature s......
In order to find novel leading structures of pesticide,a series of N-(pyrimidin-5-yl)-N’-phenylureas(4a-4h) were design......
Divalent europium activated tristrontium dialuminum hexaoxide phosphor, (Sr1-xEux)3Al2O6, was obtained by solid state re......
