Sampling

This study, using descriptive statistics with 226 survey samples of economics students at Can Tho University of Technology, will describe the current awareness of young people about CE. The results show that young people's awareness of CE is still quite low.

12p viaburame 14-03-2025 1 0   Download

A procedure for quantitative analysis of trace element magnesium (Mg) in soft capsules (mainly containing vitamins, trace elements and herbal extracts) using atomic absorption spectroscopy (AAS) has been established. The sample was treated to convert the Mg compound to Mg+2 ion form in solution by heating the sample on a boiling water bath with 10% hydrochloric acid solution, with the addition of Polysorbate 80. The sample was diluted with 1% hydrochloric acid solution, with the addition of LaCl3 in the final solution for AAS measurement.

8p tuongmotranh 18-03-2025 1 1   Download

Thin films of ZnO and Al-doped ZnO are deposited on glass wafer substrates using a compressed sprayer system with Zn(CH3COO)2.2H2O and AlCl3 as precursors. The influence of Al doping concentration on the crystal phase and morphology of the samples is investigated by XRD and SEM, respectively.

9p viaburame 14-03-2025 2 1   Download

The aims of this study include: (1) analyzing the PAHs concentration in chicken egg samples; (2) evaluating the PAHs distribution in the albumen and yolk; and (3) estimating the exposure risk to human health via chicken egg consumption.

8p viyoko 01-10-2024 0 0   Download

In this study, spinel ferrite nanoparticles CoFe2-xLaxO4 (x = 0, 0.025, and 0.05) were successfully synthesized via a simple co-precipitation method using a 5% NaOH solution as a precipitating agent. The physicochemical properties of the materials, annealed at 850 °C for one hour, were characterized using powder X-ray diffraction (PXRD), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), and vibrating-sample magnetometry (VSM) at room temperature.

10p viling 11-10-2024 3 1   Download

In the present work, CeO2 with different loading was embedded on reduced graphene oxide (rGO) by a simple one-pot hydrothermal method. The synthesized samples were characterized using XRD, EDX mapping, FESEM, and UV-Vis DRS techniques.

11p vifilm 11-10-2024 3 1   Download

In this report, the solid phase extraction technique combined with the gas chromatographymass spectrometry method (GC-MS) was optimized to determine the contamination of nine phthalic acid esters (PAEs) in the surface sediment samples collected from Rao Cai River in Ha Tinh, Vietnam.

7p vifilm 11-10-2024 1 1   Download

In this study, Cat Hai fish sauce, one of the major traditional fish sauce manufacturers in Vietnam, was used to investigate the variation in histamine content during the fermentation process and to isolate histamine-producing bacteria. Six Dich Chuop samples corresponding to the first sixth months from the beginning of fermentation were collected for these purposes.

10p vibecca 01-10-2024 3 2   Download

This study investigated the role of perennial crop systems in enhancing sustainable livelihoods among rural households in Dak Lak province, Vietnam, with a particular focus on coffee and pepper crops. To gather data for this study, structured interviews were conducted with 86 households (90 farms) through a multi-stage sampling approach from January to May 2019.

12p vibecca 01-10-2024 3 2   Download

This study examined the phytochemical composition and algicidal effectiveness of Ludwigia octovalvis. The powder samples were extracted by ultrasound-assisted extraction with polar solvents (water-diluted ethanol, acetone, methanol, and water).

9p vibecca 01-10-2024 5 2   Download

In recent years, the ICP-MS method has been applied to analyze biological and environmental samples. The content of several metallic elements, namely Al, Ba, Sr, Mn, Fe, Cu and Zn in green tea leaves (Camellia sinensis L.) collected from Son La province was analyzed using the ICP-MS method.

7p viling 11-10-2024 4 1   Download

The objective of this study was to develop a method for analysis of MGF in tear fluid that can be further utilised to evaluate the kinetics of pre-cornea drug concentration. For sample collection, lacrimal tear fluid was absorbed into pre-weighed absorbing paper strips, which were then immediately weighed again right after sampling to calculate the sample mass.

12p vihyuga 04-03-2025 3 1   Download

Quantitative reverse transcription PCR (RT-qPCR) paired with stem-loop was utilized in this study to establish a process for detecting miRNA-425-5p in human plasma, contributing to accurate prognosis and early diagnosis of genetic diseases in humans, especially cancer diseases. Blood samples (n=12) collected from healthy volunteers in Ho Chi Minh City, were subjected to plasma extraction and then microRNA (miRNAs) isolation using the TRIzol method.

11p vihyuga 04-03-2025 2 1   Download

The aim of this paper is to assess the impact of financial leverage on cash holding structure represented by the proportion of cash equivalents in total cash and cash equivalents of non-financial companies listed in Vietnam. We selected a sample of 300 firms from the years 2015 to 2022, and analyzed the secondary data obtained from the audited financial statements of these companies.

10p viinuzuka 28-02-2025 2 1   Download

OECD guidelines were applied. Mice were divided into 7 groups consisting of 30 females and 10 males each. In which, the control group received the solvent, only females or males in 4 other groups were taken the testing samples (32), and both females and males of 2 remain groups were given those samples. Mice were given oral samples at a dose of 288 or 576 mg/kg/day × 7 consecutive days depending on individual group.

7p viinuzuka 28-02-2025 2 1   Download

This study aims to analyze the impact of poverty reduction policies on livelihood assets (human capital) of ethnic minorities in Dong Van district, Ha Giang province, Vietnam. The research sample is from more than 400 survey questionnaires of ethnic minority households in Dong Van district, Ha Giang province.

9p vihyuga 20-02-2025 3 1   Download

This study is devoted to determining dynamic parameters of dense coral sand using Controls dynamic triaxial compression testing device under large deformation and different confining pressure conditions. Parameters analyzed in the present work include excess pore pressure, damping ratio, dynamic elastic modulus and dynamic shear modulus.

12p viyamanaka 06-02-2025 2 1   Download

The study was conducted with the goal of improving tax compliance of taxpayers (NNT) at the Tax Department of Long An Province. With a sample of 204 taxpayers at the Long An Provincial Tax Department selected on a random basis having transactions with the Long An Provincial Tax Department in 2019 and with the support of SPSS software 22.

13p tamynhan6 14-09-2020 19 3   Download

Research evaluates the impact of transformational leadership on team member exchange quality and employees’ proactive work behavior. With a sample size of 619 employees working at 50 business brands of electronic (E-COMMERCE) in Vietnam, results of analyzing data with SPSS and AMOS shows the same impact of transformational leadership on team member exchange quality and team member exchange quality on OCBs.

12p viuchinaga2711 21-10-2021 23 6   Download

This study employs both qualitative and quantitative methods by gathering data from 220 survey samples to identify and evaluate the influencing factors on the application of Strategic Management Accounting (SMA) in logistics companies in Ho Chi Minh City (HCMC) amidst Vietnam’s transition to a market economy.

8p viyamanaka 06-02-2025 3 2   Download