Natural science

To assess the initial outcomes of Laparoscopic Totally Extraperitoneal (TEP) surgery for inguinal hernia (IH). Patients and Methods: This study included 58 patients diagnosed with IH who were treated with TEP at the Viet Tiep Hospital between September 2021 and September 2023.

6p vibecca 01-10-2024 2 0   Download

Along with the development of science and technology and the application of the achievements of the 4th Industrial Revolution, many countries around the world have succeeded in building a smart city model that contributes to improving the quality of life, improving the service quality of the city government, reducing energy consumption, and enhancing the effective management of natural resources. This article aims to propose technological solutions in smart city management and development associated with digital transformation.

8p vibecca 01-10-2024 3 2   Download

The Free Water Surface wetland (FWS) has emerged as a promising technological solution for wastewater treatment in natural environments. The study aimed at investigating the performance of a laboratory-scale Free Water Surface wetland (FWS) unit designed to treat domestic wastewater with a daily capacity of 20 liters.

9p vibecca 01-10-2024 3 0   Download

The Mekong River Delta is one of the most vulnerable areas in the world. Because of climate change, the risk of road flooding in the Mekong River Delta is increasing. Road flood disaster is considered as a series of damage processes affecting a road under the effect of different factors such as natural and social factors.

9p vibecca 01-10-2024 1 1   Download

This is the first principal endeavor to understand genetic information of milkfish in Vietnam, thereby providing information for scientists, managers, and the general public to establish timely strategies to explore, protect, and develop milkfish genetic resources in the future.

8p vibecca 01-10-2024 3 1   Download

The objectives of the study were to (i) identify sustainable livelihood options; (ii) the most suitable livelihood practices with the purpose of reducing poverty for local communities and their dependency on forest resources; and (iii) recommend suitable policies to reduce the conflict between socio-economic development and forest management.

14p vibecca 01-10-2024 3 2   Download

This study attempts to examine the relationship among financial development, trade openness, natural resources rent, government expenditure, and economic growth in three Northeast Asian countries, namely China, Japan, and the Republic of Korea, between 1981 and 2020 using the fixed effect and random effect models.

14p vibecca 01-10-2024 3 1   Download

This study was conducted to detect Ascaris suum, Toxocara canis, and Toxocara cati in naturally infected chicken livers, and then to provide information related to ascarid infections in humans.

6p vibecca 01-10-2024 2 2   Download

This study aimed to identify the factors affecting farmers’ adoption of sustainable land management (SLM) practices to combat land degradation in Vietnam. Based on the survey data from 826 farmers in three representative regions, the study showed that the SLM model and SLM adoption rate were quite varied due to differences of natural and socio-economic conditions.

12p vibecca 01-10-2024 4 2   Download

This study aimed to assess the perception of H'mong farmers in the northwest mountainous region on climate change, its impacts on crop production, and their adaptation strategies. Reports on natural disaster events and their damages for the period ranging from 2012- 2021, together with meteorological data including daily temperature and precipitation for 1991-2021, were collected.

13p vibecca 01-10-2024 2 2   Download

In Vietnam, a tea-producing country, the tea buds and top three leaves are normally used for tea production while older leaves are pruned and discarded as agricultural waste in the winter. The present study aimed to exploit catechins from pruned tea leaves and use them as natural antioxidants for applications in the food industry.

12p vibecca 01-10-2024 4 2   Download

Iceberg lettuce is one of the most important vegetables economically and nutritionally, but its perishable nature poses challenges for storage and long-distance transportation. This study investigated the effect of maturity stages on the quality of iceberg lettuce for export under cold storage conditions.

12p vibecca 01-10-2024 2 2   Download

The Department of Organic Chemistry, the Department of Inorganic and Applied Chemistry, and the Department of Chemistry are among the six departments, six majors, and three research laboratories that make up the Faculty of Chemistry today, some 70 years after its founding. Physical chemistry, analytical chemistry, polymer chemistry, medicinal chemistry, and three key-research labs, including the labs for natural compounds, cancer, and computational chemistry.

6p dianmotminh02 03-05-2024 7 1   Download

Flavonoids are a diverse group of natural compounds extensively studied in various research articles. They are widely distributed in the plant kingdom and exhibit various biological activities, including antioxidant, antiinflammatory, anticancer, antiviral, and antimicrobial effects. The genus Knema Lour., which contains many species in Southeast Asia, has been traditionally used to treat various ailments. The current review aims to provide a comprehensive update on the isolation of flavonoids and other secondary metabolites from the genus Knema Lour. between 1978 and 2022.

15p dianmotminh02 03-05-2024 10 4   Download

This history of antimicrobials is marked with impressive discoveries, the majority of which have their origin in natural products. However in this work, the antimicrobial activity of β- nitrostyrenes and related compounds of synthetic origin is reviewed and investigated with a particular focus on the influence of fluorine functionality. Various fluorinated β-methyl-β-nitrostyrene compounds were prepared, their minimum inhibition concentration in cultures of Gram positive, Gram negative and a fungus and their lipophilicity was determined.

133p runthenight05 01-03-2023 5 3   Download

The main aims of physical geodesy are to study the shape of the Earth, its gravity field and the geoid which is an equipotential surface closest to the mean sea level. Precise geoid determination has been an important research topic in geodesy and geophysics in the past two decades. Scientists and government agencies all around the world have made great efforts on the development of highaccuracy geoid models.

182p runthenight07 01-03-2023 7 2   Download

The focus of this thesis was to study the chemotaxonomic relationship of selected southern Australian marine brown algae of the genera Cystophora and Sargassum. Consequently, this resulted in the isolation and structure elucidation of six new terpenoids from two southern Australian marine brown algae Cystophora moniliformis and Sargassum fallax together with 10 previously reported natural products. As a result of the re-isolation of these known secondary metabolites, updated and complete structural characterisation data could be provided for the first time for 7 of these compounds.

132p runthenight07 01-03-2023 7 3   Download

This study proceeded to address the following objectives: To evaluate the effect of gas composition commonly used in modified atmosphere packaging (80% O2 and 20% CO2) on the shelf life of beef patties; to formulate an optimal solution containing natural antioxidant and antimicrobial preservatives and to study the effect of this combination and MAP on physiochemical attributes (surface colour (chroma, hue angle), metmyoglobin and oxmyoglobin contents, lipid stability) of fresh beef patties; to evaluate the effect of combined antioxidant – antimicrobial natural preservative and MAP on packag...

95p runthenight04 02-02-2023 6 1   Download

The main aims of physical geodesy are to study the shape of the Earth, its gravity field and the geoid which is an equipotential surface closest to the mean sea level. Precise geoid determination has been an important research topic in geodesy and geophysics in the past two decades. Scientists and government agencies all around the world have made great efforts on the development of high-accuracy geoid models.

182p runthenight04 02-02-2023 9 3   Download

This research examines how parametric loudspeakers may be considered unique acousmatic musical instruments; how the parametric acoustic array (PAA) can potentially make new forms of music and listening experiences; and how PAA-design problems can be overcome. Interdisciplinary in nature, the study uses grounded theory and experimental music practice within a design research methodology. Theory emerges from data, in concert with analysis and framing that draws on areas such as electroacoustic music, spatial composition, acoustics, PAA science/theory, modulation theory, and medium theory.

177p runthenight04 02-02-2023 2 2   Download