EFL HIGH-SCHOOL TEACHERS’ PRACTICES OF STRATEGIES FOR CRITICAL THINKING INSTRUCTION IN WRITING CLASSES

This study aims to investigate EFL high-school teachers’ practices of strategies for CT instruction in their writing classrooms. The study was designed as a mixed-method one, using a questionnaire, and classroom observation as collecting data instruments. The sample consists of 103 EFL teachers from 21 high schools in Camau province, in the Mekong Delta region for quantitative data; five out of 103 teachers were purposely chosen to be observed to collect qualitative data. The finding of the study revealed that EFL high-school teachers’ practices of CT strategies used in writing classrooms were at a high level but at the lowest rate. At the same time, the results from classroom observation showed that EFL teachers used three more including setting real writing tasks, presentation, and student questioning in addition to the seven CT strategies presented in the research. From the findings, some pedagogical implications and recommendations are promoted in the hope that EFL teachers can effectively employ strategies for teaching CT in writing classrooms. Finally, the study’s limitations and suggestions for further research were also highlighted.  Article visualizations

ESTIMATING THERMAL STABILITY OF PHOSPHATED AND PHOSPHATED SULFATED MESOPOROUS ZIRCONIA

Mesoporous phosphated zirconia (m-PZ) and mesoporous phosphated sulfated zirconia (m-PSZ) were synthesized through condensation methods using Zr3(PO4)4 and Zr(SO4)2 as precursors respectively. The precursors, solvents with suitable molar or mass ratios were mixed at 100oC for 48 hours to obtain the mesoporous channels. An oxophosphate process was used to synthesize the m-PSZ material for improving its thermal stability. Some techniques was used to characterize the materials such as SAXRD, TG-DTA and TEM

UNDERSTANDING THE STATUS AND CHALLENGES OF MANGROVE CONSERVATION IN CENTRAL VIETNAM: CASE STUDY IN DUY XUYEN DISTRICT, QUANG NAM PROVINCE

Abstract: While mangrove forests support large surrounding populations and diverse economic activities, mangrove areas in Central Vietnam are decreasing. This study, thereforce, aims to understand the current status and threats facing mangrove conservation and development. A survey of 52 respondents was conducted in Duy Xuyen district, the largest area of mangrove forests of Quang Nam province. The results show that 17 mangrove species belong to 11 families, in which 8 significant species and 9 minor species were found in this site. The distribution of species was uneven with dominated by Nipah palms (Nypafruticans Wurmb). Although the mangrove species had several useful functions including protection against wind, wave break and serving tourism development, mangrove areas have been decreasing from 26.39ha to 18.22ha during period of 1999-2018. In which, 67.3% of respondents argued that the conversion of mangroves to aquaculture is one of the main causes of mangrove loss. The study also provided some suggestions related to a long-term development strategy for both government and local community, especially who are directly involving in the mangrove for their livelihoods.Keywords: Central Vietnam, development strategy, mangrove forests, livelihood

Adsorption process on fixed bed column in rich organic wastewater treatment experimental studies and numerical simulation

None axially dispersed plug flow model (NADPF) was applied to simulate adsorption process on fixed bed column. To determine model input parameters and verify the model, isotherm curve, solid diffusion coefficient ($D_s$) and breakthrough curve have been determined from experiment. Activated carbon SWW 210220 was selected as the main adsorbent for research. Wastewater of Minhkhai Textile Company is the sample used in experiment study. According to isotherm function, textile wastewater is poorly adsorbed into SWW210220. Kinetic data also show that diffusion step of textile wastewater is very slow (DS ~ 1.31*$10^{-13}$ m$^2$/s). With textile wastewater, NADPF model can be used to simulate adsorption process

STUDY ON TREATMENT OF THE LEACHATE FROM LANDFILL SITE AT NAMSON, SOCSON, HANOI

Joint Research on Environmental Science and Technology for the Eart

Structural and electronic properties of hydrogen - functionalized armchair germanene nanoribbons: A first-principles study

Structural and electronic properties of armchair germanene nanoribbons functionalized by hydrogen atoms (H-AGeNR) are studied through density functional theory (DFT) method. The DFT quantities for analyzing the structural and electronic properties are fully developed through the DFT calculations, including the functionalization energy, relaxed geometric parameters, orbital- and atom-decomposed energy bands, electronic density of states, charge density, and charge density difference. Under hydrogen functionalization, the functionalization energy is achieved at -2.59 eV, and the structural parameters are slightly distorted. This provides evidence of good structural stability of the functionalized system. Besides, the very strong bonds of H-Ge are created because the electrons are transfered from Ge atoms to H adatoms, which induces hole density in the functionalized system, which is regarded as p-type doping. As a result, the π bonds of 4pz orbitals at low-lying energy are fully terminated by the strong H-Ge covalent bonds, in which the strong hybridizations of H-1s and Ge-(4s, 4px, 4py, and 4pz) orbitals have occurred at deep valence band. The termination of π bonds leads to the opened energy gap of 2.01 eV in the H-functionalized system that belongs to the p-type semiconductor. The enriched properties of the H-functionalized system identify that the H-functionalized system..

Policy Response, Social Media and Science Journalism for the Sustainability of the Public Health System Amid the COVID-19 Outbreak: The Vietnam Lessons

Vietnam, with a geographical proximity and a high volume of trade with China, was the first country to record an outbreak of the new Coronavirus disease (COVID-19), caused by the Severe Acute Respiratory Syndrome Coronavirus 2 or SARS-CoV-2. While the country was expected to have a high risk of transmission, as of April 4, 2020—in comparison to attempts to contain the disease around the world—responses from Vietnam are being seen as prompt and effective in protecting the interests of its citizens, with 239 confirmed cases and no fatalities. This study analyzes the situation in terms of Vietnam’s policy response, social media and science journalism. A self-made web crawl engine was used to scan and collect official media news related to COVID-19 between the beginning of January and April 4, yielding a comprehensive dataset of 14,952 news items. The findings shed light on how Vietnam—despite being under-resourced—has demonstrated political readiness to combat the emerging pandemic since the earliest days. Timely communication on any developments of the outbreak from the government and the media, combined with up-to-date research on the new virus by the Vietnamese science community, have altogether provided reliable sources of information. By emphasizing the need for immediate and genuine cooperation between government, civil society and private individuals, the case study offers valuable lessons for other nations concerning not only the concurrent fight against the COVID-19 pandemic but also the overall responses to a public health crisis

Factors contributing to household-resilience capacity to farming risks: Case study of clam farming in Thai Binh province, Vietnam

Despite coastal endowment is a unique opportunity for coastal farmers it may be embedded with some risks. Vietnam was ranked 18th in world risk index in 2015 with the vulnerability index of 50.87% (Garschagen, Hagenlocher et al. 2016). In this context, Vietnamese clam farmers have been experiencing increased difficulties. This research focuses on clam production in Thai Binh province which has the largest clam area in northern and northern central coastal Vietnam. The central question of the research was “which factors contributing to farmer’s resilience to clam farming risks”. Results of the research indicated that there are several factors, which altogether explained 66% of variance of resilience among the households, formed three groups including (1) farmer’s ability in gaining experiences from failures and harnessing new opportunities; (2) farmer’s perception toward clam farming risks and its impacts; (3) farmer’s confidence about financial capacity and incomes from diversifying activities which can be used to invest in clam farming. From these research results, several support strategies have been suggested to enhance this capacity of the clam farmers, in order to minimize the losses while maximizing the benefit when people seek for sustainable livelihood

On how religions could accidentally incite lies and violence: folktales as a cultural transmitter

Folklore has a critical role as a cultural transmitter, all the while being a socially accepted medium for the expressions of culturally contradicting wishes and conducts. In this study of Vietnamese folktales, through the use of Bayesian multilevel modeling and the Markov chain Monte Carlo technique, we offer empirical evidence for how the interplay between religious teachings (Confucianism, Buddhism, and Taoism) and deviant behaviors (lying and violence) could affect a folktale’s outcome. The findings indicate that characters who lie and/or commit violent acts tend to have bad endings, as intuition would dictate, but when they are associated with any of the above Three Teachings, the final endings may vary. Positive outcomes are seen in cases where characters associated with Confucianism lie and characters associated with Buddhism act violently. The results supplement the worldwide literature on discrepancies between folklore and real-life conduct, as well as on the contradictory human behaviors vis-à-vis religious teachings. Overall, the study highlights the complexity of human decision-making, especially beyond the folklore realm