Environmental science

This article provides an overview of the mechanism and performance operating cycle of internal combustion engines using water-fuel emulsions and the efficiency, economy, and environmental friendliness of this fuel type for automobiles.

12p viengfa 28-10-2024 1 1   Download

Wood, an environmentally friendly construction material, is characterized by a critical attribute that significantly influences its mechanical properties and durability: its moisture absorption behavior. This study expands upon an existing one-dimensional model to develop an innovative two-dimensional numerical framework for simulating moisture propagation within wood.

15p vibecca 01-10-2024 2 0   Download

The objective of the paper was to analyze factors influencing the green purchase intention of students through a case study at the Vietnam National University of Agriculture (VNUA), Hanoi, Vietnam. The primary data were collected from a survey of 121 undergraduate students in 2020. The study employed descriptive statistics, exploratory factor analysis (EFA), and multiple regression analysis.

14p vibecca 01-10-2024 1 1   Download

Zero valent iron (ZVI) nanoparticles have been considered as effective materials for environmental remediation because of their strong reducing ability, high reaction activity, and excellent absorption properties. In this study, we synthesized iron nanoparticles using an environmentally friendly method in order to treat Cr(VI) ions in an aqueous medium.

8p vibecca 01-10-2024 0 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

This article introduces a virtual private network (VPN) system deployed in a 70m2 operator station and greenhouse at Vietnam National University of Agriculture. The VPN system allowed for remote programming, stable operation, and no loss of data during the signal collecting process, and allowed users to fully and quickly react when the system crashed or when the user needed to upgrade or maintain the greenhouse system.

13p vibecca 01-10-2024 1 1   Download

Biotechnology is defined as biology-based technology using organisms or their parts to make or modify products or to improve characteristics of plants, animals, and microorganisms for the demands of human beings. This article reviews the current research, challenges, and perspectives of biotechnology as an integration of both life sciences and applied sciences.

11p vibecca 01-10-2024 0 0   Download

The aim of the present study was to evaluate the relationships between environmental temperatures and life-history traits of whitefly Bemisia tabaci on cassava in the Northern part of Vietnam.

9p vibecca 01-10-2024 1 1   Download

The paper proposed several recommendations to rebuilding the swine herd in order to address the issues and overcome the challenges, mainly focus on improving sow quality, market information and linkages, good practices in production, training for labor, and address environmental issues.

13p vibecca 01-10-2024 1 1   Download

In this paper, several IAA farming systems practiced in Vietnam are described, and their impacts are also reviewed. It is speculated that in developing countries like Vietnam, the IAA farming system should be targeted for support as a sustainable food safety model and a form of ecosystem-based technology to reduce environmental impacts, adapt to climate change, help avoid risks from market fluctuation, and increase incomes in comparison with monoculture farming.

8p vibecca 01-10-2024 1 1   Download

This study aimed to determine the perceptions of climate change of undergraduate students at Vietnam National University of Agriculture (VNUA). The study employed quantitative and descriptive methods using a five-point Likert scale instrument.

14p vibecca 01-10-2024 2 1   Download

Environmental problems have become one of the top concerns in Vietnam since 2016. This study aimed to investigate what groups of people were most concerned about the environment and to what extent their concerns differed from each other.

16p vibecca 01-10-2024 1 1   Download

The study was conducted to analyze the factors affecting the use of pig wastewater for crop cultivation in Hanoi city. Through the application of the Theory of Planned Behavior to develop the theoretical framework and structural equation modeling, the study showed that the behavior intention influenced the recycling behavior.

11p vibecca 01-10-2024 3 1   Download

This study measured production efficiency considering environmental factors (environmental efficiency) to assess the sustainability of pig farms in the district. This study used the data envelopment analysis (DEA) model with undesirable output (COD emissions) to measure environmental efficiency in pig production.

12p vibecca 01-10-2024 1 1   Download

Dredging plays a crucial role in port management, but disposing dredged material in the ocean raises environmental concerns. In recent years, this practice has become more prevalent in Vietnam. This study examined the dispersion of total suspended solids (TSS) in seawater from the submersion of dredged material in Vung Ang Port, northern Vietnam, to evaluate the environmental impact.

15p vibecca 01-10-2024 2 0   Download

This article aims to discuss the concepts, theories, and practices of circular agriculture, and to draw recommendations for successful implementation. The findings reveal that circular agriculture focuses on promoting resource circularity in the agro-food value chain, minimizing external inputs, reducing resource requirements, regenerating bio-ecosystems, and reducing environmental impacts to meet increasing food demands and improve producers' livelihoods.

12p vibecca 01-10-2024 1 0   Download

In this thesis atomistic level modelling is conducted to investigate the design of an environmentally adaptable self-cleaning polymer paint coating that incorporates biomimetics to remain clean in various environmental setting. This work will be used to aid in the development of stay-clean polymer paint coating.

116p runthenight07 01-03-2023 6 3   Download

For this purpose, it has been attempted to determine new geological, seismological and environmental data by examining a large number of original sources, records and old international earthquake catalogs, other than the existing national catalogs used in seismicity studies in Turkey. In this context, a new local and updated historical earthquake catalog was prepared for İzmir and its immediate vicinity. The data obtained from the records show that the maximum intensity of some destructive historical earthquakes in the İzmir region was X.

59p tanmocphong 29-01-2022 12 1   Download

The demand for energy is increasing day by day worldwide due to population growth, industrialization and rising living standards. Geothermal energy, one of the alternative energy sources, is preferred in terms of providing environmentally friendly, quality and regular energy. Our country is rich in geothermal resource potential. However, there are still many unexplored geothermal resources. In this study, fuzzy-AHP method was used to determine the geothermal potential of Ağrı province.

17p tanmocphong 29-01-2022 16 1   Download

To build trust across many sites (laboratories, regulatory agencies, contract research organizations, chemical producers, and the public), stakeholders will need to agree on validation requirements for particular uses (content in relation to context) as well as how results are to be communicated (data format), and measured (metrics). There is also a need for a global orchestrator, who can exert leadership and inspire voluntary cooperation of diverse organizations to address shared validation goals, to play a key role.

13p thebadguys 15-01-2022 17 1   Download