Dat Nguyen Thanh

University of Science and Technology of Ha Noi · Department of Biomedical Engineering

High performance liquid chromatography with diode-array detector (HPLC-DAD) has been fully validated according to AOAC requirements for the determination of adenosine and cordycepin in dietary supplements containing Cordyceps. Chromatographic conditions using InertSustain C18 (250 mm × 4.6 mm; 5 µm) column, with gradient program composed of methano...

Targeted therapy with tyrosine kinase inhibitors (TKI) provides survival benefits to a majority of patients with non-small cell lung cancer (NSCLC). However, resistance to TKI almost always develops after treatment. Although genetic and epigenetic alterations have each been shown to drive resistance to TKI in cell line models, clinical evidence for...

This paper proposes a lossless point cloud (PC) geometry compression method that uses neural networks to estimate the probability distribution of voxel occupancy. First, to take into account the PC sparsity, our method adaptively partitions a point cloud into multiple voxel block sizes. This partitioning is signalled via an octree. Second, we emplo...

This paper proposes a lossless point cloud (PC) geometry compression method that uses neural networks to estimate the probability distribution of voxel occupancy. First, to take into account the PC sparsity, our method adaptively partitions a point cloud into multiple voxel block sizes. This partitioning is signalled via an octree. Second, we emplo...

A method using solid phase extraction (SPE) and high performance liquid chromatography with diode array detector (HPLC-DAD) has been optimized for the simultaneous determination of notoginsenoside R1 and three ginsenosides Rg1, Re, Rb1 in solid, oil, and liquid dietary supplements. The substances were separated by an InertSustain C18 column (250 mm...

We propose a practical deep generative approach for lossless point cloud geometry compression, called MSVoxelDNN, and show that it significantly reduces the rate compared to the MPEG G-PCC codec. Our previous work based on autoregressive models (VoxelDNN) has a fast training phase, however, inference is slow as the occupancy probabilities are predi...

Purpose of the study: Alzheimer's disease (AD) is the most common type of dementia and its prevalence is rapidly increasing worldwide. Early-onset Alzheimer's disease (EOAD) constitutes of patients with age of onset earlier than 65 year-old and is known to be associated with genetic mutations. In this study, we reported the first genetic analysis o...

This paper presents a learning-based, lossless compression method for static point cloud geometry, based on context-adaptive arithmetic coding. Unlike most existing methods working in the octree domain, our encoder operates in a hybrid mode, mixing octree and voxel-based coding. We adaptively partition the point cloud into multi-resolution voxel bl...

Context. Studying the accretion process in very low-mass objects has important implications for understanding their formation mechanism. Many nearby late-M dwarfs that have previously been identified in the field are in fact young brown dwarf members of nearby young associations. Some of them are still accreting. They are therefore excellent target...

Studying the accretion process in very low-mass objects has important implications for understanding their formation mechanism. Many nearby late-M dwarfs that have previously been identified in the field are in fact young brown dwarf members of nearby young associations. Some of them are still accreting. They are therefore excellent targets for fur...

Xác định hàm lượng Rutin trong một số cao dược liệu Hoa hòe được xác định bằng phương pháp HPLC-UV. Điều kiện sắc ký sử dụng cột Agilent Zorbax Eclipse XDB C18 (150 x 4,6 mm; 5 µm), detector quang phổ tử ngoại ở bước sóng 257 nm, pha động: methanol - dung dịch acid acetic 1% (40: 60, v/v). Phương pháp có khoảng tuyến tính từ 4,97 - 298,47 µg/ml; Gi...

An HPLC-UV method was proposed in order to determine Rutin in Sophora japonica L. extract samples (3 samples extracted with 30% ethanol, 3 samples extracted with 70% ethanol and 3 samples extracted with water). The chromatographic conditions were: Agilent Zorbax Eclipse XDB C18 Column (150 x 4.6 mm, 5 µm); UV-Vis detector (257 nm); mobile phase: a...

Late M-type dwarfs in the solar neighborhood include a mixture of very low-mass stars and brown dwarfs which is difficult to disentangle due to the lack of constraints on their age such as trigonometric parallax, lithium detection and space velocity. We search for young brown dwarf candidates among a sample of 28 nearby late-M dwarfs with spectral...