Van Thanh Dau, Thien Xuan Dinh, Canh Dung Tran, Tung Thanh Bui, Hoa Thanh Phan,
We report an application of ion wind in angular rate sensing. A new design of a jet flow gyroscope using ion wind corona discharge is developed by conducting a numerical simulation and then an experimental analysis with regard to the advantages of a corona-discharge-based jet flow. Ion wind is generated by applying a high–voltage between a pin, as the discharge electrode, and a ring, as the reference electrode. The current–voltage characteristics of the discharge process by experimental works is ...
Tópico(s): Aerosol Filtration and Electrostatic Precipitation
2018 - Elsevier BV | Sensors and Actuators A Physical
L. S. Lussier, C. Sándorfy, LE THANH HOA LE THANH HOA, D. Vocelle,
... of trans-retinalL. S. Lussier, C. Sandorfy, . Le Thanh Hoa, and D. VocelleCite this: J. Phys. Chem. 1987, ...
Tópico(s): Molecular Sensors and Ion Detection
1987 - American Chemical Society | The Journal of Physical Chemistry
Thanh Hoa Le, Van De Nguyen, Ba Uoc Phan, David Blair, Donald P. McManus,
... in a Viet Namese child Get access Thanh Hoa Le, Thanh Hoa Le aInstitute of Biotechnology (IBT), Hanoi, Viet Nam ...
Tópico(s): Parasites and Host Interactions
2003 - Oxford University Press | Transactions of the Royal Society of Tropical Medicine and Hygiene
Ut T. Tran, Thanh Liem Huynh, Hoa Thanh T. Nguyen,
Tópico(s): Academic integrity and plagiarism
2017 - Springer Science+Business Media | Journal of Academic Ethics
Van Thanh Dau, Thien Xuan Dinh, Tung Thanh Bui, Canh‐Dung Tran, Hoa Thanh Phan, Tibor Terebessy,
A novel air-flow generator based on the effect of ion wind has been developed by the simultaneous generation of both positive and negative ions using two electrodes of opposite polarity placed in parallel. Unlike the conventional unipolar-generators, this bipolar configuration creates an ion wind, which moves away from both electrodes and yields a very low net charge on the device. The electro-hydrodynamic behavior of air-flow has been experimentally and numerically studied. The velocity of ion ...
Tópico(s): High voltage insulation and dielectric phenomena
2016 - Elsevier BV | Experimental Thermal and Fluid Science
Van Thanh Dau, Thien Xuan Dinh, Canh Dung Tran, Phong Bui, Du Dinh Vien, Hoa Thanh Phan,
In this paper, we report a further study of flow-network generating four jet flows which circulate in a sealed device to experimentally investigate the feasibility and efficiency of a dual-axis gyroscope. The experiment is carried out successfully and the experimental results reasonably agreed with those obtained by numerical analysis using OpenFOAM. The flow rectifying coefficient is determined using the mathematical lump model for a vibrating system, which takes into account of the device geometry ...
Tópico(s): Mechanical and Optical Resonators
2018 - Elsevier BV | Mechanical Systems and Signal Processing
Yuehan Liu, Hue Trong Duong, Hoa Thanh Nguyen,
Guided by the Appraisal Tendency Framework (ATF) and the Protection Motivation Theory (PMT), this study investigated the relationships between exposure to COVID-19 information conveyed through mainstream media and social media, negative emotions, risk perception, and intentions to wear face masks. An online survey was conducted with 590 Americans during the early stages of the COVID-19 pandemic (April 2020). Results indicated that while mainstream media were associated with fear, anxiety, and anger, ...
Tópico(s): Psychology of Moral and Emotional Judgment
2021 - Taylor & Francis | Atlantic Journal of Communication
Hue Trong Duong, Hoa Thanh Nguyen, Soroya Julian McFarlane, Long Thang Van Nguyen,
Preventing the COVID-19 outbreak primarily depends on individuals' willingness to adopt social distancing and mask wearing behaviors. However, little is known about what drives individuals to adopt these behaviors. Guided by the Integrative Model of Behavioral Prediction, this study surveyed 590 adults in the US during the early stages of the outbreak to identify factors influencing intentions to practice social distancing and wear masks. Structural equation modeling results show that while attitudes ...
Tópico(s): Social and Intergroup Psychology
2021 - Taylor & Francis | The Social Science Journal
Khoa Dang Duong, Tran Ngoc Huynh, Diep Van Nguyen, Hoa Thanh Phan Le,
The energy sector in Vietnam has developed rapidly as the country is transitioning to renewable energy. Moreover, the Vietnamese government also motivates the engagement of private investors in the energy sector to enhance the competitiveness of the energy market. Therefore, this paper investigates how innovation investments and ownership concentration affect the financial sustainability of energy companies in Vietnam. We employ the Fixed Effect Model and Generalized Method of Moments estimations ...
Tópico(s): Microfinance and Financial Inclusion
2022 - Elsevier BV | Heliyon
Tópico(s): Vietnamese History and Culture Studies
1929 - Wiley | Geographical Journal
Hai Le The, Hoa Thanh Le, Tao Dong, Bao Quoc Ta, Nhut Tran‐Minh, Frank Karlsen,
In this paper, a novel micromixer design, called the shifted trapezoidal blades (STB) micromixer, has been designed and fabricated to provide high mixing efficiency even at low Reynolds number (Re) based on the combination of several mixing principles, including vortices, transversal flows and chaotic advection. Although the STB micromixer has 3D geometrical structure, it can be easily fabricated by one-step photolithography technique, using only one mask and two inclined exposures and an aluminum ...
Tópico(s): Innovative Microfluidic and Catalytic Techniques Innovation
2014 - Elsevier BV | Process Safety and Environmental Protection
Hoa Thanh Phan, Thien Xuan Dinh, Van Thanh Dau,
In this paper, we report the design study of a fluidic device that produces four microjet flows comprising two perpendicular pairs of flow and the application of these jets for an angular rate sensor. The jets were created in a closed fluidic network without a check valve and they can freely deflect in a confined sensing chamber. The formation of the continuous flow in a confined space has been confirmed by experiment. This allows the study to a triple-axis angular rate sensor whose working principle ...
Tópico(s): Mechanical and Optical Resonators
2015 - IEEE Sensors Council | IEEE Sensors Journal
Hai Le The, Bao Quoc Ta, Hoa Thanh Le, Tao Dong, T. Nguyen‐Thoi, Frank Karlsen,
A novel passive micromixer, called a trapezoidal-zigzag micromixer (TZM), is reported. A TZM is composed of trapezoidal channels in a zigzag and split–recombine arrangement that enables multiple mixing mechanisms, including splitting–recombining, twisting, transversal flows, vortices, and chaotic advection. The effects of geometric parameters of the TZM on mixing performance are systematically investigated by the Taguchi method and numerical simulations in COMSOL Multiphysics. The number of mixing ...
Tópico(s): Nanopore and Nanochannel Transport Studies
2015 - IOP Publishing | Journal of Micromechanics and Microengineering
Hoa Thanh Le, Bao Quoc Ta, Hai Le The, Vy Nguyen, Kaiying Wang, Frank Karlsen,
In order to produce disposable microneedles for blood-collection devices in smart homecare monitoring systems, we have developed a simple low-cost scalable process for mass fabrication of sharp-tipped microneedle arrays.The key feature in this process is a design of computer numerical control-machined aluminum sample (CAS).The inclined sidewalls on the CAS enable microfabricated traditional-shaped microneedles (TMNs) to be produced in the desired shape.This process provides significant advantages ...
Tópico(s): Microfluidic and Bio-sensing Technologies
2015 - Institute of Electrical and Electronics Engineers | Journal of Microelectromechanical Systems
William Tiddi, Anna Elsukova, Hoa Thanh Le, Pei Liu, Marco Beleggia, Anpan Han,
Electron-beam lithography (EBL) is the backbone technology for patterning nanostructures and manufacturing nanodevices. It involves processing and handling synthetic resins in several steps, each requiring optimization and dedicated instrumentation in cleanroom environments. Here, we show that simple organic molecules, e.g. alcohols, condensed to form thin-films at low temperature demonstrate resist-like capabilities for EBL applications and beyond. The entire lithographic process takes place in ...
Tópico(s): Mechanical and Optical Resonators
2017 - American Chemical Society | Nano Letters
Hoa Thanh Le, Yasser Nour, Zoran Pavlovic, Cian O’Mathúna, Arnold Knott, Flemming Jensen, Anpan Han, Santosh Kulkarni, Ziwei Ouyang,
The integration of power inductors is a roadblock in realizing highly miniaturized power supply in package (PSiP) and power supply on chip. Inductors in such power systems are used for energy storage and filtering, but they dominate in size and loss. This paper presents a novel three-dimensional in-silicon through-silicon via (TSV) magnetic-core toroidal inductor for PSiP. The magnetic powder based core is embedded into a TSV air-core inductor using a casting method. The unique air-core inductor design ...
Tópico(s): Advanced Sensor and Energy Harvesting Materials
2018 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Power Electronics
Hoa Thanh Le, Yasser Nour, Anpan Han, Flemming Jensen, Ziwei Ouyang, Arnold Knott,
Miniaturization of power supplies is required for future intelligent electronic systems, e.g., Internet-of-Things devices. Inductors play an essential role, and they are by far the most bulky and expensive components in power supplies. This paper presents a miniaturized microelectromechanical system (MEMS) inductor and its performance in a very highfrequency (VHF) power converter. The MEMS inductor is a silicon-embedded air-core toroidal inductor, and it is constructed with through-silicon vias, suspended ...
Tópico(s): Advanced DC-DC Converters
2018 - Institute of Electrical and Electronics Engineers | IEEE Journal of Emerging and Selected Topics in Power Electronics
Vinh Duy Cao, Shima Pilehvar, Carlos Salas-Bringas, Anna M. Szczotok, Nu Bich Duyen, Hoa Thanh Le, Manuel Carmona, Juan F. Rodrı́guez, Anna‐Lena Kjøniksen,
The effects of microencapsulated phase-change materials (MPCM) on the rheological properties of a geopolymer paste (GPP) were investigated. In order to quantify the time-dependent viscosity increase of the geopolymer paste containing MPCM (GPP-MPCM), a new rheological model was successfully developed. Three different MPCMs were compared in order to examine the effect of the hygroscopic nature of the microcapsule shells and the size distribution of the microcapsules. In addition, the effect of microcapsule ...
Tópico(s): Innovative concrete reinforcement materials
2018 - American Chemical Society | Industrial & Engineering Chemistry Research
Hoa Thanh Le, Io Mizushima, Yasser Nour, Peter Torben Tang, Arnold Knott, Ziwei Ouyang, Flemming Jensen, Anpan Han,
Abstract We report a fabrication technology for 3D air-core inductors for small footprint and very-high-frequency power conversions. Our process is scalable and highly generic for fabricating inductors with a wide range of geometries and core shapes. We demonstrate spiral, solenoid, and toroidal inductors, a toroidal transformer and inductor with advanced geometries that cannot be produced by wire winding technology. The inductors are embedded in a silicon substrate and consist of through-silicon ...
Tópico(s): Innovative Energy Harvesting Technologies
2018 - Springer Nature | Microsystems & Nanoengineering
Jiahua Guo, Shohei Ito, Hoa Thanh Nguyen, Kimika Yamamoto, Rumi Tanoue, Tatsuya Kunisue, Hisato Iwata,
Triclosan (TCS), a commonly used antimicrobial compound, has recently been detected in the eggs of wild avian species. Exposure to TCS in rodents is known to interfere with thyroid hormone (TH), disrupt immune responses and cause liver disease. However, no attempt has been made to clarify the effects of TCS in avian species. The aim of this study is therefore to evaluate the toxic effects of in ovo exposure to TCS and explore the molecular mechanism by transcriptome analysis in the embryonic liver ...
Tópico(s): Biochemical Analysis and Sensing Techniques
2018 - Elsevier BV | Toxicology and Applied Pharmacology
Hoa Thanh TRUONGHUYNH, Baoguo Li, Heng Zhu, Quanyou Guo, Li Song,
Large yellow croaker (Pseudosciaena crocea) is the main coastal economic fish in China. After harvesting, the fish is rarely traded as the fresh product, but usually held in cold storage. Therefore, it is important to understand the quality changes occurring during preservation. In this study, freshly collected fishes were frozen by cryogenic (cabinet liquid nitrogen freezer at -40, -60 and -80 °C) and forced convection (ultra-low temperature freezer at -40 °C) freezing and stored at -18 °C for 6 months. Drip ...
Tópico(s): Food Industry and Aquatic Biology
2020 - Sociedade Brasileira de Ciência e Tecnologia de Alimentos | Food Science and Technology
Hoa Thanh Nguyen, Lingyun Li, Akifumi Eguchi, Kurunthachalam Kannan, Eun‐Young Kim, Hisato Iwata,
Tópico(s): Health, Environment, Cognitive Aging
2020 - Elsevier BV | The Science of The Total Environment
The amplification of Coronavirus risk on social media sees Vietnam falling volatile to a chaotic sphere of mis/disinformation and incivility, which instigates a movement to counter its effects on public anxiety and fear. Benign or malign, these civil forces generate a huge public pressure to keep the one-party system on toes, forcing it to be unusually transparent in responding to public concerns.
Tópico(s): Misinformation and Its Impacts
2020 - Cogitatio | Media and Communication
Hoa Thanh Nguyen, Kimika Yamamoto, Midori Iida, Tetsuro Agusa, Mari Ochiai, Jiahua Guo, Rajendiran Karthikraj, Kurunthachalam Kannan, Eun‐Young Kim, Hisato Iwata,
Developmental exposure to bisphenol A (BPA) is associated with liver dysfunction and diseases in adulthood. The aims of this study were to assess the effects of prenatal BPA exposure on the hepatic transcriptome and proteome in female and male offspring and to understand adverse outcome pathways (AOPs) to observed phenotypic effects. Pregnant Wistar rats were exposed to 50 or 5000 μg BPA/kg bw/day, or 17β-estradiol (E2, 50 μg/kg bw/day) from embryonic day 3 to 18. The liver transcriptome and proteome ...
Tópico(s): Carcinogens and Genotoxicity Assessment
2020 - Elsevier BV | The Science of The Total Environment
Hue Trong Duong, Long Thang Van Nguyen, Soroya Julian McFarlane, Hoa Thanh Nguyen, Khai The Nguyen,
The present study focused on the success story of Vietnam's ability to control the COVID-19 outbreak in the early stages to examine the associations between exposure to the Vietnam Ministry of Health's COVID-19 prevention social media campaign messages, interpersonal communication, attitudes, perceived norms, self-efficacy, and intentions to stay at home. A cross-sectional survey was conducted with residents in Ho Chi Minh City (N = 360). Results from mediation analyses indicated that interpersonal ...
Tópico(s): COVID-19 Pandemic Impacts
2021 - Taylor & Francis | Health Communication
Hoa Thanh Le, Rubaiyet Iftekharul Haque, Ziwei Ouyang, Seung Woo Lee, Shelley I. Fried, Ding Zhao, Min Qiu, Anpan Han,
Abstract MEMS inductors are used in a wide range of applications in micro- and nanotechnology, including RF MEMS, sensors, power electronics, and Bio-MEMS. Fabrication technologies set the boundary conditions for inductor design and their electrical and mechanical performance. This review provides a comprehensive overview of state-of-the-art MEMS technologies for inductor fabrication, presents recent advances in 3D additive fabrication technologies, and discusses the challenges and opportunities ...
Tópico(s): 3D IC and TSV technologies
2021 - Springer Nature | Microsystems & Nanoengineering
... major hospitals are located in the Province of Thanh Hoa in the north-central part of the country ... population in Quang Tri Province and 16 in Thanh Hoa. The Needs Assessment was conducted by Save the ... be seriously underserved. According to other sources, however, Thanh Hoa has a total of 19 basic and nine ... to have greater availability of EmOC services than Thanh Hoa; of the three facilities surveyed two provide comprehensive ... facilities Recommended number size Basic Comprehensive Basic Comprehensive Thanh Hoa 3 467 600 0 2 28 7 Quang ...
Tópico(s): Global Maternal and Child Health
2002 - Elsevier BV | International Journal of Gynecology & Obstetrics
Nguyễn Thị Kim Liên, Nguyen Thi Hong Ngọc, Nguyen Thu Hien, Nguyễn Huy Hoàng, Nguyen Thi Huong Binh,
... standard collection method. These provinces include Ha Noi, Thanh Hoa, Nghe An, Ha Tinh in the north and ... Nghe An populations, respectively, but were 100% in Thanh Hoa and Ha Tinh. For permethrin, the mortality rate ... in Khanh Hoa and up to 100% in Thanh Hoa, Nghe An, and Ha Tinh. These results suggested ... be characterized as highly resistant, whereas Nghe An, Thanh Hoa, and Ha Tinh populations have a lower level ... al. 2016). Insecticide (diagnostic dose) Ha Noi strain Thanh Hoa strain Nghe An strain Ha Tinh strain Khanh ...
Tópico(s): Insect Pest Control Strategies
2018 - Wiley | Journal of Vector Ecology
T. N. Duong, Lai Hop Phong, Don Pham, C. H. Chen, Van Toan Dinh,
Thanh Hoa province belongs to the southwest part of Northwest Vietnam, which is considered a tectonically active region. In the area of Thanh Hoa province, there are three deep-seated tectonic faults, ... 6TD broadband seismometers that have been deployed in Thanh Hoa province since November 2009. We found that the Thanh Hoa area is not seismically quiet. The average number ... a specific fault, especially in the area of Thanh Hoa coastal plain, which is covered by thick layers ...
Tópico(s): Seismic Waves and Analysis
2021 - | VIETNAM JOURNAL OF EARTH SCIENCES
Duong Thi Lim, Thi Lan Huong Nguyen, Thi Hue Nguyen, Tran Quan Dang, Thi Huong Thuy Nguyen, Thu Thuy Tran, Thi Minh Trang Trinh, Đào Ngọc Nhiệm, Quang Bac Nguyen, Van Tien,
... three beaches at Sam Son, Hai Tien, Hai Hoa) in Thanh Hoa province in March 2020 and July 2020, respectively, ...
Tópico(s): Coastal Management and Development
2021 - | Vietnam Journal of Marine Science and Technology