Prediction of cross second virial coefficients for dimer H2-O2 from ab initio calculations of intermolecular potentialsHere the Mi denote molar masses of the pure components, Mij an “interaction molar mass”, and c is a constant (21.8 K g/mol). It turns out that the adjustable parameters aij and dij are very close to zero for a large number of chemical compounds. We have set these two correlation parameters to zero for the hydrogen-oxygen interaction and used the...
7 trang | Chia sẻ: honghp95 | Ngày: 01/12/2020 | Lượt xem: 606 | Lượt tải: 0
The Studies of Energy Transfer between Sm3+ ions in Lead Sodium Telluroborate Glasses Using Inokuti-Hirayama ModelThe optical spectra of Sm3+ -doped lead sodium telluroborate glasses have been investigated. The luminescence shows the self-quenching happening after concentration of about 0.75 mol%. This phenomenon is due to the energy transfer process between the pairs of Sm3+ ions. This process leads to the reduction of the lifetime. The non-exponential dec...
8 trang | Chia sẻ: honghp95 | Ngày: 01/12/2020 | Lượt xem: 618 | Lượt tải: 0
Electrochemical DNA sensor for Herpes virus detection - Phuong Dinh TamThis paper reports the potential ability of DNA sensor HSV-1 virus detection. The optimal temperature range found for such kind of DNA was from 60 to 650C. The DNA sensor can determine the DNA target of HSV-1 in the sample at the concentration as low as 0.5 nM. Such concentration is very important in enzyme based biosensors application for d...
6 trang | Chia sẻ: honghp95 | Ngày: 01/12/2020 | Lượt xem: 674 | Lượt tải: 0
The kumada-Corriu cross-coupling reaction in micro reactor: advantages over conventional batch reactorIn summary, the Kumada-Corriu reaction using the polymer-supported nickel catalyst at room temperature was readily carried out in a continuous micro flow reactor. Reasonable conversions could be achieved in a matter of minutes, compared to conversions obtained after 24 h in a conventional batch reaction, albeit on a much smaller scale. Compa...
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Effect of Temperature on Cu2ZnSnS4 Nanomaterial Synthesized by Hydrothermal Approach - Pham Thi HongFig. 4 shows the plot of (h)2 vs. h of CZTS nanoparticles prepared at 240 oC. The band gap of the nanoproduct was estimated by extrapolating the linear part of the plot to the horizontal axis. The result shows that the band gap of CZTS is 1.52 eV, which is consistent with bandgap reported for CZTS prepared by solution methods. This value is a...
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Influence of the Finite Size Effect on Properties of a Weakly Interacting Bose G as in Improved Hatree-Fock ApproximationIt is obviously that the effective mass is the same as that in one-loop approximation while the order parameter is different. In one-loop approximation, the order parameter is constant and equals to unity. Eq. (15) shows that in IHF approximation depends strongly on the distance between two plates, especially in small- region and it turns out to...
5 trang | Chia sẻ: honghp95 | Ngày: 01/12/2020 | Lượt xem: 708 | Lượt tải: 0
Preparation and Characterization of Quantum Dots Sensitized Solar Cells Based on TiO2/CdS:Mn2+/CdSe PhotoanodeThe PCE of QDSSCs using pure CdS nanocrystal was 1.52%. When ion Mn2+ were doped, photovoltaic parameters of QDSSCs enhanced significantly. At 20% ion Mn2+ doping concentration, the short-circuit current density, open-voltage and fill factor were JSC = 12,5mA/cm2, VOC = 0.49V, and FF = 0.34, respectively, and the PCE of QDSSCs reached 2.5%. The ...
10 trang | Chia sẻ: honghp95 | Ngày: 01/12/2020 | Lượt xem: 780 | Lượt tải: 0
Electrochemical Properties of Fe2O3 Electrode in Alkaline Solution Containing K2S AdditiveFe2O3 electrode was prepared using Fe2O3 nanoparticles. The electrochemical behaviors of the Fe2O3 electrode in KOH electrolyte were investigated. The effect of K2S additive in electrolyte solution on electrochemical properties of Fe2O3 electrode was also measured. The results showed that the K2S additive affected the electrochemical impedance, ...
7 trang | Chia sẻ: honghp95 | Ngày: 01/12/2020 | Lượt xem: 669 | Lượt tải: 0
Photoluminescence and Point Defect Related Emission of ZnO:Mn2+ micro/nanorod Fabricated by Co-Precipitation MethodWe fabricated 1D ZnO micro/nanorod with homogenous size distribution (~400 nm in diameter, and ~15 µm in length) by co-precipitation method. The XRD spectra indicated ZnO samples in hexagonal wurtize structure and the d-spacing distance of Mn2+ doped ZnO with annealing treatment, 0.294 nm, is larger than that of the as-prepared sample, 0.247 nm....
8 trang | Chia sẻ: honghp95 | Ngày: 01/12/2020 | Lượt xem: 704 | Lượt tải: 0
Crystal Structure and Magnetic Properties of TbTSn Compounds (T = Pt and Rh)We have prepared TbPtSn and TbRhSn with a single phase in hexagonal (ZrNiAl-type structure). The lattice constants have been calculated as a = b = 7.44378 Å, c = 3.99993 Å for TbRhSn. The temperature dependence of inverse magnetic susceptibility and specific heat shows that compounds are in anti-ferromagnetic state and Néel temperature 13.5 K fo...
5 trang | Chia sẻ: honghp95 | Ngày: 01/12/2020 | Lượt xem: 613 | Lượt tải: 0
