A5083914774- Traditional and Medicinal Uses of Annonaceae
- Phytochemistry and Biological Activities
- Research studies in Vietnam
- Advanced Fluorescence Microscopy Techniques
- Advanced Photocatalysis Techniques
- Essential Oils and Antimicrobial Activity
- Natural product bioactivities and synthesis
- Optical Coherence Tomography Applications
- Force Microscopy Techniques and Applications
- Near-Field Optical Microscopy
- Structural Engineering and Vibration Analysis
- Geodetic Measurements and Engineering Structures
- GABA and Rice Research
- Thermochemical Biomass Conversion Processes
- Structural mechanics and materials
- Insect Pest Control Strategies
- Pharmacological Effects of Natural Compounds
- Robotic Locomotion and Control
- Advanced Nanomaterials in Catalysis
- Catalysis and Hydrodesulfurization Studies
- Cocoa and Sweet Potato Agronomy
- Seismic Performance and Analysis
- Hip and Femur Fractures
- Vibration Control and Rheological Fluids
- Neurological Disease Mechanisms and Treatments
Technische Universität Berlin
2021-2024
Thuyloi University
2019-2024
Hanoi University of Science and Technology
2022-2024
Tay Nguyen University
2022-2023
Vinh University
2005-2023
Thai Nguyen University
2023
Institut des Molécules et Matériaux du Mans
2021-2023
Le Mans Université
2021-2023
Centre National de la Recherche Scientifique
2021-2023
Thu Dau Mot University
2021-2022
Measuring quantitative and accurate friction force at the nanoscale by means of atomic microscopy is not straightforward. Numerous lateral calibration methods have been proposed in last decades. The most popular one wedge method that requires a specific sample having areas present constant slope coefficient. In this paper, we propose to revisit using an original, cheap, easy-to-make standard, which consists V-shaped scratch made Berkovich nanoindenter tip on fused silica substrate. We show...
Mô hình màng hóa mềm chịu xoắn (SMMT) được phát triển dựa trên mô (SMM) cho cấu kiện cắt. SMMT hiệu chỉnh khi xem xét ứng xử kéo của bê tông và hệ số ảnh hưởng biến dạng hai trục một thông qua khuếch đại Hsu/Zhu. Ngoài ra, còn đến việc suy giảm do uốn ngoài mặt phẳng nên Hsu/Zhu 20% so với cắt phép dự đoán chính xác trước sau nứt. Hơn nữa, cũng đã có các cải tiến để áp dụng dầm rỗng cốt thép suất kéo, nén, đun đàn hồi như hạn chế chiều dày thực rỗng. Tuy nhiên, này trạng thái vật liệu đoạn...
There are around 140 species in the genus Callicarpa, with 23 occurring Vietnam. The Vietnamese Callicarpa have been poorly studied. In this work, leaf essential oils of C. bodinieri, candicans, formosana, longifolia, nudiflora, petelotii, rubella, and sinuata, obtained from plants growing central chemical compositions were determined using gas chromatography – mass spectrometry. Mosquito larvicidal activities carried out against Aedes aegypti. All showed activity, but two samples candicans...
Vietnam's construction industry is in the development stage. Construction problems and especially issue of quality are considered analyzed from numerous aspects. Currently, building information modeling (BIM) technology plays a major role industry. Companies, governments, experts, training providers aim for widespread adoption BIM. BIM stages being continually edited oriented to suit each point. Moreover, lean philosophies gradually applied implementation based on technology. This philosophy...
The development of photocatalysts that can utilize the entire solar spectrum is crucial to achieving efficient energy conversion.
Maintaining fruit freshness and quality in extended storage life represents a major obstacle the production industry. One of easiest ways to prolong shelf is by dipping fruits suitable solution. In this research, we assessed effects time sweet orange cultivar with mixture containing 1.15% chitosan (CS) 0.39% polyvinyl alcohol (PVA) on external internal parameters oranges during 12 days at 30 °C. The results showed that 6 min are optimum maintain tested oranges, including giving better skin...
In nature, organic molecules play a vital role in light harvesting and photosynthesis. However, regarding artificial water splitting, the research focus is primarily on inorganic semiconductors. Although photocatalysts have high structural variability, they tend to exhibit lower quantum efficiencies for splitting than their counterparts. Multicomponent reactions (MCRs) offer an attractive route introduce different functional units into covalent frameworks (COFs) enable semiconducting...
Phosphomolybdic acid was used to achieve simultaneously P-doping and heterojunction construction of graphitic carbon nitride. The composite materials show improved light harvesting that result in a better hydrogen evolution performance.
Abstract The leaf oil of Alchornea tiliifolia (Benth.) Muell. produced from plants growing in Pu Mat National Park, Nghean province, Vietnam was prepared by steam distillation. analyzed GC and GC/MS. A total 45 compounds were identified, which β-pinene (31.4%), linalool (17.0%) β-caryophyllene (10.7%) found to be major components.
We demonstrate a significant resolution enhancement beyond the conventional limit in multiphoton microscopy (MPM) using saturated excitation of fluorescence.Our technique achieves super-resolved imaging by temporally modulating laser-intensity and demodulating higher harmonics from fluorescence signal.The improvement lateral axial resolutions is measured on sample fluorescent microspheres.While third harmonic already provides an enhanced resolution, we show that further can be obtained with...
In the present communication, composition and antimicrobial activity of essential oil from leaves Acorus macrospadiceus (Yam.) F. N. Wei & Y. K. Li Vietnam were reported. The yield was 0.25 % (w/w). main constituents β-caryophyllene (31.1 %), α-selinene (12.6 α-asarone (12.0 %) α-humulene (8.0 %). displayed anti-candidal against Candida albicans ATCC 10231 with a minimum inhibitory concentration (MIC) value 8.67 μg/ mL. addition, exhibited broad spectrum other tested microorganisms MIC in...
AbstractAbstractLindera chunii Merr. is an important member of the Lauraceae family plants which are known for their medicinal values. In this research article, chemical constituents and antimicrobial activity essential oils from leaves L. grown in Vietnam were reported. The oil was obtained by hydrodistillation while determined using gas chromatography (GC) chromatography-mass (GC/MS) spectrometry methods. evaluated a microdilution broth susceptibility assay. occurring higher amounts leaf...
Knema is a genus of tropical evergreen trees the family Myristicaceae found in South East Asian countries such as Vietnam, Thailand, and Malaysia. In this paper, four lignans, (+)-pinoresinol (1),(+) epi-pinoresinol (2), piperitol (3), pluviatilol (4), were isolated from ethyl acetate extract fruit pachycarpa, an indigenus tree Vietnam. The chemical structures determined by spectroscopic data comparison with reported literature. These compounds for first time. Keywords. pachycarpa de Wilde,...
According to the Ministry of Natural Resources and Environment, Hanoi city is currently facing increased air pollution, especially particulate matter. This study examines influence meteorological factors including temperature, humidity wind speed on PM10 concentration in Hanoi. The data used this include 24-h data, hourly 2018 at three automatic monitoring stations under Vietnam Environment Administration Department. SPSS statistical analysis tools are utilized analyze correlation between...
This paper introduces the equilibrium state control considering hold cones for humanoid climbing robot. Recently, free-climbing has become popular and many gyms have been opened. On other hand, robots are expected as useful machines to assist human lives. To develop robot is expand ability of they can be used at not only horizontal spaces but also vertical space in mountain areas or disaster areas. Particularly, this makes clear constraints needed on presents a balance condition perform wall...
Abstract Macaranga balansae Gagnep., locally known as “Ba soi lông tơ” or “Mã rạng balansa”, is a tree endemic to Vietnam, found at central provinces. Its ethyl acetate extract was showed cytotoxic activity against TG1 cancer cell line. In this paper, we report the preliminary study on chemical constituents of leaves M. . Seven compounds including lupeol ( 1 ), phytol 2 isophytol 3 sitostenone 4 sitoindoside I 5 gallic acid 6 ) and methyl gallate 7 were isolated from Their structures...
Often isolated from soil-dwelling microbes such as Serratia marcescens and Streptomyces coelicolor, red-pigmented prodigiosin its derivatives have been characterized natural bioactive compounds which possess a broad range of cytotoxic activity against various cancer cell lines well other biology activities. The raising need to enhance the production this secondary metabolite due wide applications in both industrial therapeutic field has gained attention researchers over decades. Several...
In this study, we present a novel investigation into the magnetic and morphological properties of equiatomic B2-ordered FeRh thin films irradiated with single high-intensity ultrashort laser pulses. The goal is to elucidate effect femtosecond ablation on FeRh. We employed Scanning Magneto-Optical Kerr Effect (S-MOKE) microscopy examine phase after processing, providing high spatial resolution sensitivity. Our results for first time demonstrated appearance magneto-optical signal from bottom...
This research is undertaken to improve technologies that enable the design and implementation of a humanoid robot able climb vertical natural terrain. Humanoid climbing (HC Robot) designed up wall totally autonomously, it expected be useful rescue in disaster area. It seems more difficult analyze dynamic character because complexity mathematical description. Therefore, this paper starts with technique analysis. After that, rudimentary analysis mechanical structure kinematics HC shown....
The chemical components of the leaf oil Litsea acutivena Hayata collected from Pù Huong Natural Reserve, Nghe An Province, Vietnam, were identified by co-chromatography with authentic samples, gas chromatography/mass spectrometry (GC/MS) and linear retention indices. significant compounds L. α-phellandrene (30.4%) α-pinene (14.2%). constituents essential Vietnam are being reported for first time.