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2005 Volume 21 Issue 11
2005, 21(11): 1195-1197
doi: 10.3866/PKU.WHXB20051101
Abstract:
On a flowing afterglow apparatus, the quenching of SO(c1Σ－) by SO2, O2, CO2, N2, He, CS2, CH3OH, C2H5OH, C3H7OH, C4H9OH, CH3COCH3, C6H6, CH2Cl2, CH2Br2, CHCl3, or CCl4 was studied firstly and successfully. The quenching rate constants of SO(c1Σ－) by ...
On a flowing afterglow apparatus, the quenching of SO(c1Σ－) by SO2, O2, CO2, N2, He, CS2, CH3OH, C2H5OH, C3H7OH, C4H9OH, CH3COCH3, C6H6, CH2Cl2, CH2Br2, CHCl3, or CCl4 was studied firstly and successfully. The quenching rate constants of SO(c1Σ－) by ...
2005, 21(11): 1198-1204
doi: 10.3866/PKU.WHXB20051102
Abstract:
The interactions between three kinds of water-soluble polymers, i.e. polyacrylic acid (PAA), polymethylacrylic acid (PMAA), and acrylic acid-methyl acrylate copolymer (AA-MA), and calcite crystal have been simulated by molecular dynamics (MD). The re...
The interactions between three kinds of water-soluble polymers, i.e. polyacrylic acid (PAA), polymethylacrylic acid (PMAA), and acrylic acid-methyl acrylate copolymer (AA-MA), and calcite crystal have been simulated by molecular dynamics (MD). The re...
2005, 21(11): 1205-1210
doi: 10.3866/PKU.WHXB20051103
Abstract:
The interfacial dilational viscoelastic properties of hydrophobically associating block copolymer composed of acrylamide (AM) and a low amount of 2-ethylhexyl acrylate (EHA) (＜ 1.0% mole fraction) with a hydrolysis degree of about 1.5%～2.0% at the oc...
The interfacial dilational viscoelastic properties of hydrophobically associating block copolymer composed of acrylamide (AM) and a low amount of 2-ethylhexyl acrylate (EHA) (＜ 1.0% mole fraction) with a hydrolysis degree of about 1.5%～2.0% at the oc...
2005, 21(11): 1211-1216
doi: 10.3866/PKU.WHXB20051104
Abstract:
Adsorption of benzoic acid and benzene from cyclohexane solution by silica gel was studied under 293~313 K. It was indicated that adsorption of benzoic acid by silica gel well fit the stoichiometric displacement mode for adsorption (SDM-A). But for b...
Adsorption of benzoic acid and benzene from cyclohexane solution by silica gel was studied under 293~313 K. It was indicated that adsorption of benzoic acid by silica gel well fit the stoichiometric displacement mode for adsorption (SDM-A). But for b...
2005, 21(11): 1217-1222
doi: 10.3866/PKU.WHXB20051105
Abstract:
Gemini surfactants, with two quaternary ammonium head groups separated by a spacer with variable configurations and with each head group attached to a same or different hydrophobic tail, can be used to control the packing parameter and the organic po...
Gemini surfactants, with two quaternary ammonium head groups separated by a spacer with variable configurations and with each head group attached to a same or different hydrophobic tail, can be used to control the packing parameter and the organic po...
2005, 21(11): 1223-1228
doi: 10.3866/PKU.WHXB20051106
Abstract:
The unity bond index-quadratic exponential potential (UBI-QEP) model is used to evaluate the heat of chemisorption of adsorbed species and activation barriers for the elementary reactions in the mechanisms for Fischer-Tropsch synthesis (FTS) reaction...
The unity bond index-quadratic exponential potential (UBI-QEP) model is used to evaluate the heat of chemisorption of adsorbed species and activation barriers for the elementary reactions in the mechanisms for Fischer-Tropsch synthesis (FTS) reaction...
2005, 21(11): 1229-1234
doi: 10.3866/PKU.WHXB20051107
Abstract:
The binding mode of a series of dicaffeoyl or digalloyl pyrrolidine and furan derivatives inhibitors with HIV-1 integrase was proposed by using molecular docking and molecular dynamics (MD) simulation methods. The results indicate that the interactio...
The binding mode of a series of dicaffeoyl or digalloyl pyrrolidine and furan derivatives inhibitors with HIV-1 integrase was proposed by using molecular docking and molecular dynamics (MD) simulation methods. The results indicate that the interactio...
2005, 21(11): 1235-1239
doi: 10.3866/PKU.WHXB20051108
Abstract:
The electrochemical characteristic of NiCl2(bpy)3 at glassy carbon electrode in DMF has been investigated by using cyclic voltammetry. Chronocoulometry was employed to determine the diffusion coefficients and the rate constants (kf and k0). The CV re...
The electrochemical characteristic of NiCl2(bpy)3 at glassy carbon electrode in DMF has been investigated by using cyclic voltammetry. Chronocoulometry was employed to determine the diffusion coefficients and the rate constants (kf and k0). The CV re...
2005, 21(11): 1240-1243
doi: 10.3866/PKU.WHXB20051109
Abstract:
By using drop-volume method, the surface tension of disodium hexadecyl diphenyl ether disulfonate (C16-MADS) was measured in different NaCl concentrations (0～0.50 mol•L-1 NaCl) at different temperatures (298.0～318.0 K). The results show that with the...
By using drop-volume method, the surface tension of disodium hexadecyl diphenyl ether disulfonate (C16-MADS) was measured in different NaCl concentrations (0～0.50 mol•L-1 NaCl) at different temperatures (298.0～318.0 K). The results show that with the...
2005, 21(11): 1244-1248
doi: 10.3866/PKU.WHXB20051110
Abstract:
1,6-hexamethylene diamine (HMD) was grafted onto multi-walled carbon nanotubes (MWNTs) via acid-thionyl chloride route. The characterization of MWNTs was carried out by Fourier transform infrared spectrum, thermal gravimetric analysis, field emission...
1,6-hexamethylene diamine (HMD) was grafted onto multi-walled carbon nanotubes (MWNTs) via acid-thionyl chloride route. The characterization of MWNTs was carried out by Fourier transform infrared spectrum, thermal gravimetric analysis, field emission...
2005, 21(11): 1249-1253
doi: 10.3866/PKU.WHXB20051111
Abstract:
The equilibrium solubility of the quaternary system NdCl3-CdCl2-HCl-H2O was determined at 298.15 K and the corresponding equilibrium diagram was constructed. The result shows that the quaternary system was complicated with four equilibrium solid phas...
The equilibrium solubility of the quaternary system NdCl3-CdCl2-HCl-H2O was determined at 298.15 K and the corresponding equilibrium diagram was constructed. The result shows that the quaternary system was complicated with four equilibrium solid phas...
2005, 21(11): 1254-1258
doi: 10.3866/PKU.WHXB20051112
Abstract:
The highly ordered anodic aluminum oxide (AAO) film, was prepared with electrochemical anodization method. The as-synthesized AAO film was amorphous as seen from XRD result. Amorphous alumina nanowires were successfully and easily obtained with high ...
The highly ordered anodic aluminum oxide (AAO) film, was prepared with electrochemical anodization method. The as-synthesized AAO film was amorphous as seen from XRD result. Amorphous alumina nanowires were successfully and easily obtained with high ...
2005, 21(11): 1259-1263
doi: 10.3866/PKU.WHXB20051113
Abstract:
Three dimensional structure-activity relationship of 55 muscarinic receptor a nists were studied using comparative molecular field analysis (CoMFA) technique. The relationship between the activities and structures was significant with cross-validated...
Three dimensional structure-activity relationship of 55 muscarinic receptor a nists were studied using comparative molecular field analysis (CoMFA) technique. The relationship between the activities and structures was significant with cross-validated...
2005, 21(11): 1263-1268
doi: 10.3866/PKU.WHXB20051114
Abstract:
A novel gel polymer electrolyte (GPE) based on noepentyl glycol diacrylate (NPGDA) and poly(vinyli-dene fluofide-co-hexafluoropropylenen) (PVDF-HFP) was prepared by a thermal polymerization method. GPE with a stable interpenetrating polymer network (...
A novel gel polymer electrolyte (GPE) based on noepentyl glycol diacrylate (NPGDA) and poly(vinyli-dene fluofide-co-hexafluoropropylenen) (PVDF-HFP) was prepared by a thermal polymerization method. GPE with a stable interpenetrating polymer network (...
2005, 21(11): 1269-1273
doi: 10.3866/PKU.WHXB20051115
Abstract:
In the multi-photon ionization experiment, the parent ion peak of time-of-flight (TOF) was observed to become broader with increasing laser power. Briefly, this phenomenon is caused by the space-charge effect of ions. A qualitative theoretical model,...
In the multi-photon ionization experiment, the parent ion peak of time-of-flight (TOF) was observed to become broader with increasing laser power. Briefly, this phenomenon is caused by the space-charge effect of ions. A qualitative theoretical model,...
2005, 21(11): 1274-1279
doi: 10.3866/PKU.WHXB20051116
Abstract:
A series of TiO2-X films doped with different halides X－(I－, Br－, Cl－, and F－) coated on the slide was prepared by dip-coating in the TiO2 sol into which potassium halide (including KI, KBr, KCl and KF) was introduced. The photo-induced hydrophilici...
A series of TiO2-X films doped with different halides X－(I－, Br－, Cl－, and F－) coated on the slide was prepared by dip-coating in the TiO2 sol into which potassium halide (including KI, KBr, KCl and KF) was introduced. The photo-induced hydrophilici...
2005, 21(11): 1280-1284
doi: 10.3866/PKU.WHXB20051117
Abstract:
The adsorption and oxidation of isopropanol in alkaline media at platinum electrode have been investigated by using electrochemical quartz crystal microbalance (EQCM) and in situ FTIR spectroscopy. The results show that there is no self-poisoning in ...
The adsorption and oxidation of isopropanol in alkaline media at platinum electrode have been investigated by using electrochemical quartz crystal microbalance (EQCM) and in situ FTIR spectroscopy. The results show that there is no self-poisoning in ...
2005, 21(11): 1285-1290
doi: 10.3866/PKU.WHXB20051118
Abstract:
Spinel LiMn2O4 and LiNiyCo0.1－yMn1.9O4 (y=0, 0.05, 0.10) samples were prepared by a precipitation method. The structure, morphology, and electrochemical performance of the samples were characterized by Fourier transform infrared (FT-IR) spectroscopy,...
Spinel LiMn2O4 and LiNiyCo0.1－yMn1.9O4 (y=0, 0.05, 0.10) samples were prepared by a precipitation method. The structure, morphology, and electrochemical performance of the samples were characterized by Fourier transform infrared (FT-IR) spectroscopy,...
2005, 21(11): 1291-1294
doi: 10.3866/PKU.WHXB20051119
Abstract:
Methane coupling to produce C2 hydrocarbons was studied with a newly developed rotary helix electrode in glow discharge plasma at atmospheric pressure. Effects of peak electric voltage and feed flow rates of methane and hydrogen on CH4 conversion, C2...
Methane coupling to produce C2 hydrocarbons was studied with a newly developed rotary helix electrode in glow discharge plasma at atmospheric pressure. Effects of peak electric voltage and feed flow rates of methane and hydrogen on CH4 conversion, C2...
2005, 21(11): 1295-1298
doi: 10.3866/PKU.WHXB20051120
Abstract:
The lattice-fluid hydrogen bond equation of state model(LFHB model) is used to correlate 1H NMR chemical shift of the proton in hydroxyl(—OH) of alcohol + inert solvent mixtures. The 29 sets of data for 17 systems are correlated using only one parame...
The lattice-fluid hydrogen bond equation of state model(LFHB model) is used to correlate 1H NMR chemical shift of the proton in hydroxyl(—OH) of alcohol + inert solvent mixtures. The 29 sets of data for 17 systems are correlated using only one parame...
2005, 21(11): 1299-1302
doi: 10.3866/PKU.WHXB20051121
Abstract:
By measuring polarization curves and alternating-current impedances, the corrosion resistance of electroless Ni-P deposits with P contents from 16.2% to 23.4%(x) was investigated in 5% (w) NaCl solution. It was found that there was a maximum of polar...
By measuring polarization curves and alternating-current impedances, the corrosion resistance of electroless Ni-P deposits with P contents from 16.2% to 23.4%(x) was investigated in 5% (w) NaCl solution. It was found that there was a maximum of polar...
2005, 21(11): 1303-1306
doi: 10.3866/PKU.WHXB20051122
Abstract:
Electrochemical scanning tunnelling microscope (ECSTM) was used to induce local electrodeposition under mild electrochemical and tunnelling bias conditions. The Pd nanocluster arrays were fabricated on Au(111) in PdCl2 and PdSO4 solutions respectivel...
Electrochemical scanning tunnelling microscope (ECSTM) was used to induce local electrodeposition under mild electrochemical and tunnelling bias conditions. The Pd nanocluster arrays were fabricated on Au(111) in PdCl2 and PdSO4 solutions respectivel...
2005, 21(11): 1307-1310
doi: 10.3866/PKU.WHXB20051123
Abstract:
The glass transition behaviors of N-alkyl chitosan were investigated by means of differential scanning calorimetry (DSC) and thermally stimulated current (TSC) spectroscopy. In DSC measurements, the second heating run was used to eliminate the effect...
The glass transition behaviors of N-alkyl chitosan were investigated by means of differential scanning calorimetry (DSC) and thermally stimulated current (TSC) spectroscopy. In DSC measurements, the second heating run was used to eliminate the effect...
2005, 21(11): 1311-1314
doi: 10.3866/PKU.WHXB20051124
Abstract:
Mesoporous Cr-MSU-1 was successfully prepared by using sodium silicate, chromium nitrate, fatty alcohol polyoxyethylene ether (A(EO)9) as the source of silicone, metal and mesostructure-directing agent, respectively. Cr-MSU-1 and MSU-1 were comparati...
Mesoporous Cr-MSU-1 was successfully prepared by using sodium silicate, chromium nitrate, fatty alcohol polyoxyethylene ether (A(EO)9) as the source of silicone, metal and mesostructure-directing agent, respectively. Cr-MSU-1 and MSU-1 were comparati...
2005, 21(11): 1315-1318
doi: 10.3866/PKU.WHXB20051125
Abstract:
Densities of L-serine-n-propanol-water ternary solutions have been measured at 298.15 K by an oscillating-tube densimeter. Apparent molar volumes, limiting partial molar volumes, transfer partial molar volumes and hydration numbers for L-serine have ...
Densities of L-serine-n-propanol-water ternary solutions have been measured at 298.15 K by an oscillating-tube densimeter. Apparent molar volumes, limiting partial molar volumes, transfer partial molar volumes and hydration numbers for L-serine have ...
2005, 21(11): 1319-1323
doi: 10.3866/PKU.WHXB20051126
Abstract:
The dynamical Lie algebraic (DLA) formulation is used to describe the nonlinear optical process for the model system of substituted benzenes in a Pariser-Parr-Pople(PPP) Hamiltonian. It is shown how to generate the dynamical Lie algebra for the given...
The dynamical Lie algebraic (DLA) formulation is used to describe the nonlinear optical process for the model system of substituted benzenes in a Pariser-Parr-Pople(PPP) Hamiltonian. It is shown how to generate the dynamical Lie algebra for the given...
2005, 21(11): 1324-1330
doi: 10.3866/PKU.WHXB20051127
Abstract:
Recent progress in temperature-controlled transition of self assemblies in surfactant solutions was summarized. Special attention was paid on the phase transition of vesicles, temperature-induced micelle/vesicle transition, cloud point phenomenon in ...
Recent progress in temperature-controlled transition of self assemblies in surfactant solutions was summarized. Special attention was paid on the phase transition of vesicles, temperature-induced micelle/vesicle transition, cloud point phenomenon in ...
