Lighting

To evaluate the treatment results of combined blue light (415 nm wavelength) and red light (633 nm wavelength) therapy for patients with severe acne vulgaris. Subjects and methods: A pre-post comparative interventional study on 30 patients with severe acne vulgaris, examined and treated at the National Hospital of Dermatology and Venereology from July 2022 to June, 2023.

5p vipanly 28-10-2024 2 0   Download

The paper sheds light on the adaptation of a literary work reaching the pinnacle of Vietnamese medieval written literature in the context of the regional and Vietnam's particular traditional culture through decoding the creative process of Nguyen Du's The Tale of Kieu - a symbol of Vietnamese national culture. The paper shows how a literary work has become a national literary peak and the image of The Tale of Kieu becomes a symbol of national consciousness, the spirit of cultural nationalization.

8p viengfa 28-10-2024 3 0   Download

In this study, we report on the hydrothermal synthesis of ZnO nanorods and the change in photocatalytic properties with different hydrothermal temperatures in the decomposition of Methylene blue (MB) and Rhodamine B (RhB) under visible light.

11p viengfa 28-10-2024 1 0   Download

Early detection of infertile and non-hatchable eggs benefits hatcheries by saving space, reducing costs, and preventing contamination from spoiled eggs. An automated system has been developed to detect and mark non-hatchable eggs efficiently. The system includes a conveyor that moves trays of 100 eggs through a high-power LED light assembly.

5p viengfa 28-10-2024 1 1   Download

In this study, we aim to delineate landslide susceptibility zones within Dien Bien province, Vietnam, leveraging the capabilities of various machine learning models including Light Gradient Boosting Machine (LGBM), K-Nearest Neighbors (KNN), and Gradient Boosting (GB).

19p viengfa 28-10-2024 3 1   Download

Light Gradient Boosting Machine is a new machine learning technique developed by Microsoft corporation which has been proposed in the present study to determine the CBR of stabilized expansive soils. Model performance of the ML model are evaluated by different criteria such as correlation coefficient R, root mean square error RMSE and mean absolute error MAE.

8p viengfa 28-10-2024 2 1   Download

Low back pain in lumbar spondylosis remains one of the most prevalent conditions, imposing a significant socio-economical burden. Objectives: To compare the effectiveness of low back pain treatment between NSAIDS and electro-acupuncture combined with infrared light (TCM) in patients with lumbar spondylosis.

5p viengfa 23-10-2024 0 0   Download

This study delves into the potential of digital math games on mobile devices to enhance the learning experience of primary school children, aiming to instill a sense of hope and optimism in Vietnamese parents. In light of the increasing prevalence of digital games and concerns about screen time and game addiction, the research examines these educational tools' perceived benefits and drawbacks.

14p viling 11-10-2024 1 0   Download

Dự báo bức xạ mặt trời chính xác là yếu tố kỹ thuật quan trọng trong việc tối ưu hóa hiệu suất các hệ thống điện mặt trời. Bài viết này đánh giá hiệu suất của ba mô hình học máy tiên tiến là Light Gradient Boosting Machine (LightGBM), Long Short-Term Memory (LSTM) và Gated Recurrent Unit (GRU) trong việc dự báo bức xạ mặt trời.

8p vifilm 11-10-2024 1 1   Download

In this study, we propose a novel approach using the oscillation characteristics of the RMS current as the input to machine learning models, combined with the confident learning technique. Using the oscillation characteristics obtained by taking a discrete Fourier transform (DFT) of the RMS current as model input, we aim to reduce the computational requirements of the machine learning models.

12p viling 11-10-2024 1 0   Download

The materials with a spinel structure have gotten some attention for their resistance to oxidizing/reducing agents and their application in many fields such as pigments, refractory, electronic engineering, magnetism, and energy storage materials.

8p vifilm 11-10-2024 0 0   Download

In the precipice of the digital age, organizations are navigating through a transformation that is not only technological but also ecological. In light of the increasing emphasis on sustainability within the business sector, Green Human Resource Management (Green HRM) has surfaced as a crucial approach that incorporates environmental stewardship into fundamental human resource operations.

10p vifilm 11-10-2024 1 0   Download

This research paper shed a light on the challenges faced during the implementation of an Enterprise Resource Planning (ERP) system in an organization, with a specific focus on project management and project monitoring. This paper also presents a case study of a company in Vietnam that experienced difficulties during the go-live phase of their ERP implementation due to poor project monitoring.

8p vifilm 11-10-2024 1 0   Download

An embedded device is becoming popular in daily life thanks to their low power consumption and multiprocessing capability. In particular, the security of embedded devices has been a big issue of concern to academic and industrial communities. This study aims at the Grain 128- AEAD authenticated encryption with associated data algorithm embedded on low-power and resourceconstrained devices.

12p vibecca 01-10-2024 3 0   Download

The paper presents an integrated wireless sensing system for monitoring environmental parameters, including temperature, relative humidity, and light intensity in mushroom houses. The developed system not only collects spatial environmental data but also enables end-users to remotely observe them via smart devices.

12p vibecca 01-10-2024 1 0   Download

The aim of this study was to design and characterize a NdFeO3-based photocatalyst prepared by sol-gel method for treatment of oily wastewater. Different characterization techniques such as X-ray diffraction (XRD), scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), UV–vis spectrophometer were used to elucidate the structure, morphology, surface functional groups, and optical absorption properties of the prepared NdFeO3 photocatalyst.

6p vikwong 29-09-2024 2 1   Download

In this study, reduced graphene oxide (rGO) incorporated on NdFeO3 (NFO/rGO) nanocomposite was successfully synthesized by using a facile hydrothermal method for photo-Fenton degradation of phenol in oily wastewater.

6p vikwong 29-09-2024 1 1   Download

The results showed that GdFeO3 photocatalyst had a good performance under visible light irradiation. The remarkable enhancement photo-Fenton catalytic activity of GdFeO3 material could be attributed to its small particle size and narrow band gap energy.

6p vikwong 29-09-2024 2 1   Download

Uniform and magnetic recyclable hollowsphere Zn doped Fe3O4 were successfully synthesized via simple one-pot solvothermal route. Morphology and structure of as-obtained products was characterized by XRD, SEM, HRTEM methods. The Zn-doped Fe3O4 hollowsphere exhibited high photocatalytic activity for degradation of hexavalent chromium under visible light irradiation.

5p vikwong 29-09-2024 2 1   Download

The Mn-doped MoS2 (Mn-MoS2) material is fabricated by a facile onestep calcination method. The Mn2+ content introduced into MoS2 is ranged from 1 wt% to 7 wt%. The X-ray diffraction (XRD) and scanning electron microscopy SEM results suggest that the doping of Mn2+ does not alter the crystal structure and the morphology of MoS2.

5p vikwong 29-09-2024 2 1   Download