Gas emission

This article provided the enhanced genetic algorithm operators and suggested model formulation that could be applied in other research on traffic signal optimization directly to reduce calculation times and increase the efficiency of the novel suggested models.

13p vibecca 01-10-2024 1 1   Download

The lack of country-specific greenhouse gas (GHG) emission factors vehicles in Vietnam makes the emissions inventory in the transport sector more difficult. This study developed the country-specific GHG emission factor in terms of CO2 equivalent for motorcycles (MCs) in Hanoi to overcome the above impediment.

11p vibecca 01-10-2024 2 0   Download

The distribution network model is one of the sophisticated strategies being used in research to assess the state of household solid waste (HSW) management and calculate the quantity of greenhouse gas emissions from landfills in Nghia Ninh and Bao Ninh communes.

12p vibecca 01-10-2024 2 1   Download

Increases in pig farm densities have caused great pressures on waste management systems and produce massive manure and urine quantities in Vietnam. This study aimed to identify the role and contributions of biogas digesters to better manage the sources of greenhouse gas (GHG) emissions from pig wastes for different types of pig farms in the north of Vietnam.

11p vibecca 01-10-2024 2 2   Download

Greenhouse Gas emission from high-rise buildings has been increasing mainly due to excessive energy consumption of the HVAC system, structural system and electrical system. In this study, a lab-scale experiment was conducted to test the electricity consumption in applying different design approaches; the energy efficiency of the system was calculated.

9p viyoko 24-09-2024 1 1   Download

In this study, Zinc oxide (ZnO) nanoparticles with a size of about 50 - 70 nm were green-synthesized using tea leaves and ZnO/Polypyrrole (ZnO/Ppy) nanocomposites were obtained by ultrasonic-assisted chemical polymerization method using pyrrole monomer and the nanoparticles. The characterization of the materials is conducted using several analytical techniques, including Field Emission Scanning Electron Microscopy (FESEM) and X-Ray Diffraction (XRD) and Ultraviolet visible spectrum (UV-Vis).

11p xuanphongdacy06 18-09-2024 2 1   Download

The swine farming has a significant potential for biogas emissions and is a substantial contributor to greenhouse gas emissions within Vietnam's agricultural sector. This study was conducted to determine the total amount of CH4, and CO2 (eq) released from mature management activities and emission coefficients of CH4 and CO2 (eq) at different swine farms in Northern, Central and Southern regions, using tier 1 and tier 2 according to IPCC method.

8p visergeyne 18-06-2024 13 1   Download

CuO nanoparticles were synthesized by alcohol-assisted hydrothermal method at various pH values, using sodium hydroxide as a precursor for pH control. The chemical composition, morphological and structural properties of the obtained CuO nanoparticles were investigated by the Raman and energy-dispersive X-ray spectroscopies, the field-emission scanning electron microscopy, and the X-ray diffraction.

12p dianmotminh02 03-05-2024 3 1   Download

Biogas energy is considered a renewable energy source. The efficient usage of biogas resources can help reduce greenhouse gas emission, especially methane, generate electricity to power farms’ loads, and decrease load demand on grids.

6p vifalcon 16-05-2023 8 4   Download

The Cau River basin has recently raised significant concerns about associated pollution issues and their critical role in socio-economic development. This study aims at assessing and forecasting the impacts of domestic wastewater on the generation of greenhouse gas emissions in Cau River basin in 2030. The main methods have been applied in this study including data collection and analysis, synthesization and inheritance method of research documents.

8p vimalfoy 08-02-2023 11 3   Download

This research explores whether Environmental Management Accounting can be applied to assist an Australian cogeneration company in improving both its financial performance as well as its environmental performance. Cogeneration or ‘combined heat and power’, in this particular case, involves the simultaneous production of heat and electricity using a single fuel, that is, natural gas. The heat generated is then used to produce steam to meet the customers’ requirements as well as boost the production of electricity.

247p runordie3 06-07-2022 10 4   Download

The study aimed at the utilization of locally available feed resources for increasing growth performance and reducing enteric methane emissions from goats in Lao PDR.

34p nguathienthan12 23-05-2021 26 2   Download

This thesis investigates the properties of the protoplanetary disk surrounding a triple low-mass stellar system, GG Tau A, using interferometric observations of trace molecules such as 12CO, 13CO, C18O, DCO+, HCO+ and H2S, and of multi-wavelength dust emission.

17p capheviahe27 23-02-2021 10 2   Download

Reduction of anthropogenic greenhouse gas emissions is advocated by the Intergovernmental Panel on Climate Change. To achieve this target, countries have opted for renewable energy sources, primarily wind and solar.

9p christabelhuynh 31-05-2020 15 1   Download

In this research, a bi-objective hybrid vehicle routing problem is presented and solved by considering alternative paths, various lengths and reliabilities. The first objective function minimizes overall system costs, fuel consumption, and greenhouse gas emissions, whereas the second objective function maximizes the reliability of the entire system with alternative paths and several reliabilities.

12p tohitohi 22-05-2020 26 2   Download

The thesis has identified the chemical composition, nutritional value of several tannin-fed leaf tops common in Vietnam and the effects of the source and the level of each type of plant to the substrate on the rate and in vitro gas characterization, methane production, in vitro digestibility, energy value (ME) and short-chain fatty acid content.

27p mangamanga 21-02-2020 36 6   Download

Research objectives of the thesis: Study the process of simultaneous determination and evaluation of the method of analyzing 7 chlorobenzene, including 1,2- 4 dichlorobenzene (1,2-DCB); 1,3-dichlorobenzene (1,3-DCB); 1,2,4- trichlorobenzene (1,2,4-TCB); 1,2,3,4-tetrachlorbenzene (1,2,3,4- TeCB), 1,2,4,5-tetraclobenzene (1,2,4,5-TeCB); pentaclobenzene (PeCB) and hexaclobenzene (HCB) in trace and superficial content in flue gas samples and industrial waste (fly ash, bottom ash, input materials).

26p xacxuoc4321 08-07-2019 51 9   Download

Thus, accompanied with appropriate complementary measures and policies, carbon taxes are effective to mitigate emission of CO2. As the carbon tax system in British Columbia, Canada has achieved notable effectiveness, it is worth further studying and analyzing, and can become a model for Taiwan.

9p cathydoll4 21-02-2019 22 1   Download

Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) released from thermal processes of various industries have urgently concerned. Stack gas samples were collected from selected electric arc furnaces (EAFs) in Vietnam in order to investigation of PCDD/F concentration, congener profile and emission factors. U.S EPA method 23 was used following the requirements for isokinetic sampling of stack gas emission.

6p nguyenvanhoangvnu 12-06-2017 42 2   Download

Toyota tundra – new features is a 4.6-liter, 32-valve DOHC V8.This engine uses the Dual Variable Valve Timing-intelligent (Dual VVT-i) system, Direct Ignition System (DIS), Acoustic Control Induction System (ACIS), Electronic Throttle Control System-intelligent (ETCS-i), air injection system and Exhaust Gas Recirculation (EGR) control. These control functions achieve improved engine performance, fuel economy, and clean emissions.

95p endlesslovelp 09-03-2015 69 9   Download