Nguyen Xuan Anh
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View article: Diode-pumped wavelength-switchable quasi-three-level Nd:LiLuF4 laser on the 4F3/2→4I9/2 transition
Diode-pumped wavelength-switchable quasi-three-level Nd:LiLuF4 laser on the 4F3/2→4I9/2 transition Open
We first demonstrate a continuous-wave (CW) wavelength-switchable quasi-three-level Nd:LiLuF 4 laser operating at 4 F 3/2 → 4 I 9/2 transition. By shifting the pump beam waist location in the Nd:LLF, switching between single-wavelength (SW…
View article: Synthesis and Characterization of Polymethylhydrosiloxane-Modified Phenol–Formaldehyde Resin
Synthesis and Characterization of Polymethylhydrosiloxane-Modified Phenol–Formaldehyde Resin Open
Resol phenol–formaldehyde (PF) resin was modified with 2.5 and 5.0 wt% polymethylhydrosiloxane (PMHS). This study characterizes the modified resin and its subsequently fabricated glass fiber (GF)-reinforced composites (30–60 wt% GF). Forma…
View article: Orthogonally Polarized Pr:LLF Red Laser at 698 nm with Tunable Power Ratio
Orthogonally Polarized Pr:LLF Red Laser at 698 nm with Tunable Power Ratio Open
A continuous-wave (CW) orthogonally polarized single-wavelength red laser (OPSRL) at 698 nm with a tunable power ratio within a wide range between the two polarized components was demonstrated using two Pr3+:LiLuF4 (Pr:LLF) crystals for th…
View article: Orthogonally Polarized Green Dual-Wavelength Pr3+:LiLuF4 Laser at 523 and 538 nm with the Power Ratio of 1:1
Orthogonally Polarized Green Dual-Wavelength Pr3+:LiLuF4 Laser at 523 and 538 nm with the Power Ratio of 1:1 Open
An orthogonally polarized green dual-wavelength (OPGDW) laser output in a Pr3+:LiLuF4 (Pr:LLF) crystal with the power ratio of 1:1 was realized for the first time. We calculated the condition for obtaining the identical power of the two ou…
View article: Dual-Wavelength Operation at 607 nm and 640 nm with the Same Threshold and Slope Efficiency in Pr3+:LiLuF4 Crystal
Dual-Wavelength Operation at 607 nm and 640 nm with the Same Threshold and Slope Efficiency in Pr3+:LiLuF4 Crystal Open
A dual-wavelength (DW) Pr3+:LiLuF4 (Pr:LLF) laser with the same threshold and slope efficiency was achieved for the first time. We theoretically deduced the conditions for obtaining the same threshold and slope efficiency of the DW operati…
View article: Orthogonally Polarized Dual-Wavelength Pr:LLF Green Laser at 546 nm and 550 nm with the Balanced Output Powers at All Pump Power Level
Orthogonally Polarized Dual-Wavelength Pr:LLF Green Laser at 546 nm and 550 nm with the Balanced Output Powers at All Pump Power Level Open
A continuous-wave (CW) orthogonally polarized dual-wavelength (OPDW) Pr3+:LiLuF4 (Pr:LLF) green laser with a balanced output power on the 3P0→3H5 transition was demonstrated for the first time. We theoretically analyzed the conditions for …
View article: Elemental Characterization of Ambient Particulate Matter for a Globally Distributed Monitoring Network: Methodology and Implications
Elemental Characterization of Ambient Particulate Matter for a Globally Distributed Monitoring Network: Methodology and Implications Open
Global ground-level measurements of elements in ambient particulate matter (PM) can provide valuable information to understand the distribution of dust and trace elements, assess health impacts, and investigate emission sources. We use X-r…
View article: Numerical Simulation of the Flood and Inundation Caused by Typhoon Noru Downstream from the Vu Gia-Thu Bon River Basin
Numerical Simulation of the Flood and Inundation Caused by Typhoon Noru Downstream from the Vu Gia-Thu Bon River Basin Open
Typhoon Noru (2022) was a historic storm that caused significant damage to the central region of Vietnam. Typhoon Noru has caused strong winds and torrential rainfall in Da Nang, Quang Nam, and Quang Ngai. Quang Nam Province saw many trees…
View article: Large global variations in measured airborne metal concentrations driven by anthropogenic sources
Large global variations in measured airborne metal concentrations driven by anthropogenic sources Open
View article: Risk – coping strategies of undocumented workers: Case study of Vietnamese migrants to Thailand
Risk – coping strategies of undocumented workers: Case study of Vietnamese migrants to Thailand Open
Sofar, studies on labour migration in Vietnam have often focused on domestic migration, international migration, refugee migration, force migration; ignored the cross – border undocumented migration. At the North Central Coast provinces: H…
View article: Synergetic Observations by Ground-Based and Space Lidar Systems and Aeronet Sun-Radiometers: A Step to Advanced Regional Monitoring of Large Scale Aerosol Changes
Synergetic Observations by Ground-Based and Space Lidar Systems and Aeronet Sun-Radiometers: A Step to Advanced Regional Monitoring of Large Scale Aerosol Changes Open
The paper presents the preliminary results of the lidar&radiometer measurement campaign (LRMC-2017), estimation of statistical relations between aerosol mode concentrations retrieved from CALIOP and ground-based lidar stations and case stu…
View article: Remote sensing of atmosphere and underlying surface using radiation of global navigation satellite systems
Remote sensing of atmosphere and underlying surface using radiation of global navigation satellite systems Open
This paper is devoted to solving the problem of atmosphere diagnosis using radiation of the global navigation satellites. New methods for diagnosing the meteorological situation, the refractive state of the troposphere and underlying surfa…
View article: Hazardous aerosol emissions during agriculture biomass burning season in Son La and Ba Vi regions, Vietnam
Hazardous aerosol emissions during agriculture biomass burning season in Son La and Ba Vi regions, Vietnam Open
Major national emission sources are assessed by characterization of smoke pollution arising due to traditional agriculture, domestic, and cooking activities in the regions of the biggest biomass burning. Measurement campaigns were carried …
View article: The role of orographic effects on occurrence of the heavy rainfall event over Central Vietnam in November 1999
The role of orographic effects on occurrence of the heavy rainfall event over Central Vietnam in November 1999 Open
In this study, the WRF model is used to investigate the role of Central Vietnam terrain on occurrence of the heavy rainfall event in November 1999 over Central Vietnam. Two model experiments with and without terrain were performed to exami…
View article: Evaluation of wind characteristics in Bac Lieu in 2016 using the weibull function
Evaluation of wind characteristics in Bac Lieu in 2016 using the weibull function Open
In this paper, the characteristics of wind speed at 20 m height at the Bac Lieu atmospheric physic station (Bac Lieu station) in 2016 were evaluated using the Weibull distribution function. The wind speed data set (every minute) from Janua…
View article: Nonequidistant two-dimensional antenna arrays are based on Latin squares for registration of cosmic, atmospheric and lithospheric radiation
Nonequidistant two-dimensional antenna arrays are based on Latin squares for registration of cosmic, atmospheric and lithospheric radiation Open
The possibility of using Latin squares for constructing two-dimensional non-equidistant antenna arrays that can be used for development of radio telescopes and systems for remote sensing of atmospheric and lithospheric radiation has been s…
View article: Variation in global chemical composition of PM <sub>2.5</sub> :emerging results from SPARTAN
Variation in global chemical composition of PM <sub>2.5</sub> :emerging results from SPARTAN Open
The Surface PARTiculate mAtter Network (SPARTAN) is a long-term project that includes characterization of chemical and physical attributes of aerosols from filter samples collected worldwide. This paper discusses the ongoing efforts of SPA…
View article: Variation in Global Chemical Composition of PM <sub>2.5</sub> : Emerging Results from SPARTAN
Variation in Global Chemical Composition of PM <sub>2.5</sub> : Emerging Results from SPARTAN Open
The Surface PARTiculate mAtter Network (SPARTAN) is a long-term project designed to maximize the chemical and physical information obtained from filter samples collected worldwide. This manuscript discusses the ongoing efforts of SPARTAN t…
View article: Characteristics of aerosol optical depth retrieved from AERONET in Vietnam and comparison with MODIS data
Characteristics of aerosol optical depth retrieved from AERONET in Vietnam and comparison with MODIS data Open
Science of the Earth, formerly Vietnam Journal of Earth Sciences, is a peer-reviewed journal to publish high-quality articles on the entire range of earth sciences and the environment, focused on the Asia Pacific region and their correlati…
View article: SPARTAN: a global network to evaluate and enhance satellite-based estimates of ground-level particulate matter for global health applications
SPARTAN: a global network to evaluate and enhance satellite-based estimates of ground-level particulate matter for global health applications Open
Ground-based observations have insufficient spatial coverage to assess long-term human exposure to fine particulate matter (PM2.5) at the global scale. Satellite remote sensing offers a promising approach to provide information on both sho…