• Determination of carbon dioxide concentration in the atmosphere from absorption spectraDetermination of carbon dioxide concentration in the atmosphere from absorption spectra

    Abstract. Carbon dioxide (CO2) gas is one of the main greenhouse gases (following water vapor) and has a significant impact on the Earth’s climate. Determation of greenhouse gas concentration (of CO2 in particular) will improve our understanding of the Earth’s climate changes. In this study, we use absorption spectra to determine the concentrati...

    pdf7 trang | Chia sẻ: thanhle95 | Ngày: 17/07/2021 | Lượt xem: 253 | Lượt tải: 0

  • V-doped TiO2 anatase: Calculation and experimentV-doped TiO2 anatase: Calculation and experiment

    Abstract. To understand the effects of V in the increment of photocatalytic activity of Vdoped TiO2, the possible position of V in the TiO2 lattice is an important parameter. This research performed ab-initio calculations to find the possible doped position of V atoms into the lattice of TiO2 anatase and compared that with experimental results. C...

    pdf8 trang | Chia sẻ: thanhle95 | Ngày: 17/07/2021 | Lượt xem: 230 | Lượt tải: 0

  • Study on melting of uranium dioxideStudy on melting of uranium dioxide

    Abstract. Determination of the melting point of fuel is essential for designing and operating nuclear reactors. We investigate the melting point of uranium dioxide by molecular dynamics simulation based on the change of the displacement of oxygen atoms, the radial distribution function, the density and the network structure of UO2 fuel. At the t...

    pdf5 trang | Chia sẻ: thanhle95 | Ngày: 17/07/2021 | Lượt xem: 231 | Lượt tải: 0

  • Investigation Young’s modulus of metallic thin films by statistical moment methodInvestigation Young’s modulus of metallic thin films by statistical moment method

    Abstract. The Young’s modulus of metallic thin films with body-centered cubic (BCC) structure at zero pressure are investigated using the statistical moment method (SMM), including the anharmonicity effects of thermal lattice vibrations. The Helmholtz free energy, mean-square atomic displacements and Young’s modulus E are derived in closed analy...

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  • Production of higgs in two photon collisionProduction of higgs in two photon collision

    1. Introduction The Standard model (SM) of particles can be used to describe the elementary particle picture. However, some theoretical drawbacks in SM have been motivation for the construction of new physical theories. Extra dimensional theory is one of many attempts to extend the SM and solve the hierarchy problem. Although the first idea, th...

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  • Synthesis of Cu/Cu2O nananoparticles by bipolar electrolysis method for electrocatalyst in ethanol oxidation reactionSynthesis of Cu/Cu2O nananoparticles by bipolar electrolysis method for electrocatalyst in ethanol oxidation reaction

    Abstract. Cu/Cu2O nanoparticles were successfully synthesized using the electrolysis method and a bipolar pulse power supply. The effect of pulse amplitude on the properties of samples was investigated. The phase analysis by XRD showed the presence of both Cu and Cu2O crystals corresponding to cubic structure. SEM images also showed the cubic sh...

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  • Cell balancing on three - cell lithium polymer batteries connected in seriesCell balancing on three - cell lithium polymer batteries connected in series

    Abstract - Electric vehicle becomes popular recently, particularly in Indonesia. One of the most important and crucial components in an electrical vehicle is the battery. BMS (Battery Management System) is a system to monitor and regulate the performance of the battery resulting in effective-efficient-durable performance. Usually, BMS is needed ...

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  • Structural, electronic and mechanical properties of few-layer porous nanosheet from spheroidal cage-like ZnO polymorphStructural, electronic and mechanical properties of few-layer porous nanosheet from spheroidal cage-like ZnO polymorph

    Abstract: The low-dimensional II-VI group semiconductors have recently emerged as interesting candidate materials for the tailoring of two dimensional (2D) layered structures. Herein, a series of the cage-like nanoporous composed of spheroidal hollow cages (ZnO)12, cutting from the high symmetrical cubic SOD cage-like polymorph as building block...

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  • Condensate density of a bose gas confined between two parallel plates in canonical ensemble within improved hartree-fock approximationCondensate density of a bose gas confined between two parallel plates in canonical ensemble within improved hartree-fock approximation

    Abstract: By means of Cornwall-Jackiw-Tomboulis (CJT) effective action approach, the condensate density of a dilute Bose gas is investigated in the canonical ensemble. Our results show that the condensate density is proportional to a half-integer power law of the s-wave scattering length and distance between two plates. Apart from that, these qu...

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  • Streaming potential coefficient measurements in porous rocks saturated by divalent electrolytesStreaming potential coefficient measurements in porous rocks saturated by divalent electrolytes

    Abstract: Streaming potential in a water-rock system is generated by the relative motion between water and solid surfaces and is directly related to the existence of an electric double layer between water and solid grain surfaces of porous media. The streaming potential measurements have great potential in geophysical applications. Most porous r...

    pdf8 trang | Chia sẻ: thanhle95 | Ngày: 17/07/2021 | Lượt xem: 246 | Lượt tải: 0