A5013806396- Muon and positron interactions and applications
- Graphene research and applications
- Advancements in Battery Materials
- Ammonia Synthesis and Nitrogen Reduction
- Chemical Synthesis and Characterization
- Conservation Techniques and Studies
- Gas Sensing Nanomaterials and Sensors
- Building materials and conservation
- Graphite, nuclear technology, radiation studies
- Cultural Heritage Materials Analysis
- Zeolite Catalysis and Synthesis
- Advanced Chemical Sensor Technologies
- earthquake and tectonic studies
- Archaeology and ancient environmental studies
- Transition Metal Oxide Nanomaterials
- Carbon Nanotubes in Composites
- Nanomaterials for catalytic reactions
- Earthquake Detection and Analysis
- Semiconductor materials and devices
- Maritime and Coastal Archaeology
- Catalytic Processes in Materials Science
- Human Resource and Talent Management
- Electron and X-Ray Spectroscopy Techniques
- Copper Interconnects and Reliability
- X-ray Spectroscopy and Fluorescence Analysis
Vietnam Atomic Energy Instiute
2009-2024
Dai Nam University
2020-2022
Viet Nam University Of Traditional Medicine
2020-2022
Institute for Nuclear Science and Technology
2008
Crystallization, formation, and accumulation of defects mesopores in the ZSM-5 zeolite samples, which are synthesized from gel composition 1.2Na2O 0.1Al2O3 0.8 tetra-propylammonium hydroxide (TPAOH) 6SiO2 400H2O at a temperature 140 degree Celsius (°C) 10, 15, 18 h, studied by using Positron annihilation lifetime (PALS) X-ray diffraction (XRD) spectroscopies. The XRD is used for investigating crystalline concentration nano-crystal size during crystallizing process, whereas PALS performed...
The purpose of this study is to investigate the importance factors that influence entrepreneurial intention among tourism undergraduate students in Vietnam.A research framework based on Theory Planned Behavior (TPB) was proposed understand relationship between TPB and intention.Additionally, entrepreneurship education also investigated.A questionnaire administered a sample 388 at different universities across Vietnam.The partial least squares structural equation modeling (PLS-SEM) method...
The objective of this study is to investigate the factors that affect implementation outcomebased education (OBE) in master program Economic Management.A research framework was proposed relationship between including professional knowledge, ability detect and solve problems, team work communication skills, attitude with students' perceived value these practical application ability.A questionnaire administered a sample 388 graduate students economic management at different universities Hanoi,...
Abstract Multi‐wall carbon nanotube samples with various tube diameters produced by Thermal Chemical Vapor Deposition technique using catalysts were studied microscopic methods and positron annihilation spectroscopy (PAS) the aim of assessing applicability these for structural studies in novel materials. Specifically, lifetime (LT) Doppler broadening (DB) techniques, transmission electron microscopy (TEM) atomic force (AFM) employed, on iron‐containing Mössbauer was also utilized. The PAS...
Positron lifetime spectroscopy was used to study multi-wall carbon nanotubes. The measurements were performed in vacuum on the samples having different average diameters. positron values depend nanotube diameter. results also show an influence of diameter annihilation intensity surface. change probability is described and interpreted by modified diffusion model introducing escape rate from nanotubes their external
Abstract The present paper reported on the analysis of structural defects and their influence red‐emitting γ‐Al 2 O 3 :Mn 4+ ,Mg 2+ nanowires using positron annihilation spectroscopy (PAS). were synthesized by hydrothermal method low‐temperature post‐treatment glucose as a reducing agent. X‐ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence (PL), excitation (PLE) utilized, respectively, for determining phase, morphology intensity in studied samples. Three PAS...
Abstract Manganese dioxide, in particular α-MnO 2 , is one of the advanced inorganic nanomaterials having wide applications many areas. Hence, understanding crystallization pathways, morphologies, and formation mechanism defects its structure importance, not only for fundamental science but also practical applications. Herein, different physically chemically based methods, such as Neutron Diffraction (ND), XRD, SEM, TPR- H TGA-DSC, FT-IR, Positron Annihilation Lifetime (PAL), Doppler...
Vietnam has begun to apply case stude method teaching for economic and business students in clleges universities because it provided them with real situation problem solving skills.By using experiences, synthesis quantitative methods ombined dialectical materialism methods, this study prove examples of studies Bahrain Vietnam, the context og educationin globalization, is better propose innovative educational strengthening policies educating studets also, instance, field.In developing...
The present paper reported the role of Mn4+ or Mg2+ doping concentrations on structural changes, defects, nanopores and optical property γ-Al2O3 nanowire-phosphor. nanowire-phosphors doped with were synthesized by hydrothermal method post-low temperature treatment, in which glucose, used as a reducing agent, dopants charge compensation ions, respectively. X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence (PL) excitation (PLE) utilized, respectively, for...
The present paper reports, for the first time, an application of positron annihilation spectroscopies (PAS) to systematically study formation lattice defects at atom scale (vacancy, divacancy), nanoporous structures (nanopores) and sites Mn4+ ions doped into K2SiF6 (KSFM) nanophosphors prepared using different solvents. KSFM materials were synthesized in presence sodium dodecyl sulphonate various solvents such as water, isopropanol, ethylacetate diethyl ether. Three main techniques PAS,...
This work reported a facile and scalable route that can control the synthesis of hexagonal annular-NiO nanoarchitecture (HANN) explored its formation mechanism as well gas-sensing properties. The results showed morphology crystal structure HANN exhibited uniform population with fascinating annular shape, each containing an interior hollow. novel HANN, which closely related to evolution defects nanopores during annealing, was examined discussed in detail by using nuclear analytical...
This study investigated the chronology of heterogeneous, multilayered, and overlapped architectures by combining field experiments with computer simulations luminescence dating. The obtained results suggested that conventional homogeneous model was indistinguishable chronologies having structures could also result in virtual enhancements calculated from ten to several hundred years. In contrast, our proposed heterogeneous multilayered for both excavated buried status explicitly exhibited...
This study investigated the chronology of heterogeneous, multilayered, and overlapped architectures by combining experiments with computer simulations thermoluminescence dating. The obtained results suggested that conventional homogeneous model was indistinguishable having structures could also result in virtual enhancements calculated from ten to several hundred years. In contrast, our proposed heterogeneous multilayered for both excavated buried status explicitly exhibited significant...