ISOLATION AND SELECTION OF AFLATOXINS PRODUCING ASPERGILLUS FLAVUS FROM PEANUT

Aspergillus flavus is known as the main producer of carcinogenic aflatoxins. The presence of this fungus and aflatoxins is an important impactson food safety, human and animal health. Peanut is one of the most important crops in Vietnam and  is suitable to substrate for aflatoxins producing fungus growth. The isolation and identification of Aspergillus flavus species from peanut is an initial step for further study in Aflatoxins contamination control in peanut. 28 peanut samples selected in Luc Nam district - Bac Giang province were used for fungus isolation. The isolated fungus were purified, conducted DNA extract, amplified PCR products then performed sequencing ITS gene and used BLAST software to check alignment to identification the strains. As the result, 4 strains alignedwith Aspergillus flavus strains from National Center for Biology Information - United Nation such as: TUHT115, KP214054.1, MTCC 8654, ZJ4-A. Those strains were checked and confirmed the aflatoxins production in peanut samples

On Building a Community to Exchange and Share Sustainable Fashion Applications

Sustainable development is a standard plan for peace and prosperity for people and the planet, now and in the future, set forth by the 2030 Agenda for Sustainable Development, which was adopted by all United Nations member states and agreed to in 2015. The Sustainable Development Goals (SDGs) are an urgent call to action for all developed and developing countries in relation to global cooperation. Many factors cause environmental pollution, but the fashion industry is considered by the United Nations Conference on Trade and Development (UNCTAD) as the second most polluting industry in the world. It accounts for 10% of global carbon emissions due to the energy used in production, manufacturing, and transportation. In particular, the factors that strongly affect the environment in the fashion industry are the textile materials, the fabric dyeing industry, and the rapid development of fast fashion. The data was collected through an online survey of 101 fashion consumers and interviews with nine target audiences who need to buy and sell used clothes or are interested in buying and selling used clothes or sustainable fashion. Sustainable design is not a new concept, but it is still quite strange to the Vietnamese. Consumer ignorance about sustainable consumption and the harmful effects of the fashion industry on planet Earth is a big reason why consumers constantly plunge into the shopping vortex. The problem of wasteful and unsustainable fashion consumption is a big global problem at a time when the fashion industry is gradually emerging into the sustainable fashion movement. This is an opportunity to build a community by connecting consumers through their essential needs, helping them raise awareness, change their behavior, and make each individual part of a sustainable fashion community. They are thus contributing to sustainable development in the future. Keywords: SDGs, sustainable fashion, sustainable consumption, communit

ENGLISH TEACHERS’ SATISFACTION WITH THE QUALITY OF GENERAL ENGLISH PROFICIENCY TRAINING PROGRAM: THE CASE OF THE MEKONG DELTA, VIETNAM

Many policy changes in teaching and learning English in Vietnam have been implemented. To make those changes successful, the quality of English teachers is paid remarkable attention to by stakeholders. In particular, the quality of their teaching is said to be the determining factor in the success or failure of the changes. Since then, many professional development programs for English teachers have been implemented in Vietnam. This research explores Vietnamese teachers’ satisfaction with the effectiveness of a large-scale general English proficiency training program provided by MOET’s National Foreign Languages Project for school teachers in the Mekong Delta. Employing questionnaires with 174 school teachers in the Mekong Delta, the study sheds light on the main factors that these teachers perceive as crucial factors that influence the quality of the training program and their satisfaction. Findings from the survey reveal that the teachers were highly satisfied with the training program, and the critical factors impacting the training effectiveness included training materials, training duration, teaching and learning facilities, qualified trainers, and support from management. These findings provide a solid foundation for proposing an efficient model training program to effectively support English language teachers in the Mekong Delta to accomplish the required English proficiency level.  Article visualizations

Some Obstacles In Mathematical Communication Of Students While Learning Continous Functions Lesson

Mathematical Communication is one of the required competencies of the learner in the needs of the real life, and in learning Mathematics, students always have the need to communicate with teacher and other students to solve problems in mathematics, as well as to present the solution or mathematical ideas to the others. However, there are many difficulties with many reasons when they exchange or communicate with the others by mathematical language in classroom. Therefore, the ability for communicating in Math is one of the required competencies of students. In this paper, we try to find out the obstacles which make students have difficulty when they are in mathematical communication while learning continuous functions. The problems set out in this article to assess how difficulties in communication in the Math class, so that we can recommend some possible strategies for teachers to help their students in order to overcome these obstacles in practicing teaching

Effects of different nutrient solutions on growth and flower quality of gerbera (Gerbera jamesonii) grown in hydroponic close system

The nutrient solution is the decisive factor for the growth and development of hydroponic plants. This study was conducted to determine the effect of five nutrient solutions, namely, Hoagland, Knop, Hydro Umat F, BKFAST, and Bio-Life, on the growth and development of gerbera (Gerbera jamesonii) in the hydroponic system. The results show that Hydro Umat F is the most suitable solution for planting gerbera in terms of plant height, number of leaves, leaf size, and root volume. In addition, the flower yield of the gerbera plants nourished on Hydro Umat F is also the highest, with 8.7 flowers per plant after five months in the hydroponic system. The flowers have a diameter of 9.8 cm and natural durability of 19.67 days. Meanwhile, gerbera plants stop growing after 15 days in the Bio-Life solution and 30 days in the Knop solution

Preparation and characterization of magnesium hydroxyapatite coatings on 316L stainless steel

Magnesium hydroxyapatite coatings (MgHAp) were deposited on the surface of 316L stainless steel (316L SS) substrates by electrodeposition technique. Different concentrations of Mg2+ ion were incorporated into the apatite structure by adding Mg(NO3)2 into electrolyte solution containing 3×10-2 M Ca(NO3)2, 1.8×10-2 M NH4H2PO4 and   6×10-2 M NaNO3. With Mg2+ concentration 1×10-3 M, the obtained coatings have 0.2 wt% Mg2+. The influences of scanning potential ranges, scanning times to deposit MgHAp coatings were researched. The analytical results FTIR, SEM, X-ray, EDX, thickness and adhension strength showed that MgHAp coatings were single phase of HAp, fibrous shapes, thickness 8.1 µm and adhesion strength 7.20 MPa at the scanning potential ranges of 0÷-1.7 V/SCE and scanning times of 5 scans. Keywords. 316L SS, Electrodeposition, MgHAp

The impact of the COVID-19 pandemic on the stressful relationship between parents and children

The stressful relationship between children and parents is the pain both go through when they find themselves unable to cope as a parent or a child. In order to find out the status, causes, and impacts of the COVID-19 pandemic and suggest some solutions to reduce stress between parents and children, we surveyed the impact of the COVID-19 pandemic on stressful relationships between parents and children at high school age in Da Nang city. The findings of a survey conducted on 550 randomly selected parents and 550 high school students using the Perceived Stress Scale reveal a high rate of tension between parents and their children, particularly up to 51.1% and 38.5%, respectively. In reality, many factors are affecting the stressful relationship between parents and their children at this age, in which psychological fear about health; social distancing policy; closed schools; students staying at home 24 hours a day and learning online; the disruption in children's daily routine; excessive use of electronic devices are major causes of stress in the relationship between parents and their children. From this practice, our research team has proposed such solutions as participating in creative activities and consulting the handbook instructing parents' behaviour rules toward children and vice versa, designing extra-curricular activities, and organizing training courses on life values for both parents and children to increase happiness and reduce stress in the parent-child relationship

Vacuum Stability in Supersymmetric Reduced Minimal 3-3-1 Model

We investigate the vacuum stability conditions of theSupersymmetric reduced minimal 331 model (SUSYRM331) that createimportant  consequences on  Higgs mass spectrum as well assoft-parameters of the model. We prove that if this condition issatisfied then all Higgses are massive. Furthermore,soft-parameters should be in order of $SU(3)_L$ scale. Based onthis, we investigate in detail masses of CP-even neutral  anddoubly charged Higgses in the model. The  neutral Higgs sectorincludes one light Higgs with mass at tree level $m_{H^0_1}\simeq m_Z|\cos 2\gamma | 92.0$ GeV and three other heavy Higgses. Fordoubly charged Higgses, there may exist a light Higgs which can beobserved by recent colliders such as LHC

Students’ perceptions of using note-taking in consecutive interpreting assignments

Note-taking is critical in helping interpreters memorize detailed information both quickly and accurately. Therefore, the present study was conducted as a questionnaire survey at a university in the Mekong Delta of Vietnam to investigate how students, specifically student interpreters, perceive note-taking in consecutive interpreting assignments. In detail, this study explores the students’ perceptions of the benefits and the challenges of using note-taking in consecutive interpreting assignments. The participants in this study comprised 160 students majoring in English Interpretation and Translation. Furthermore, they have taken consecutive interpreting courses and experienced taking notes in consecutive interpreting tasks. The findings of this study indicated that most students had good perceptions about note-taking used in consecutive interpretation and perceived its benefits and challenges. Moreover, some pedagogical implications for both students and teachers are made. Specifically, the study suggests that students should frequently practice it to acquire good note-taking skills. Teachers should make effective lecture designs to help students improve their note-taking skills and consecutive interpreting performance

Two decades of studies on learning management system in higher education: A bibliometric analysis with Scopus database 2000-2020

Over the past twenty years, using learning management systems in higher education has attracted increasing interest from researchers around the globe. In this context, the current study aimed to explore the volume, growth trajectory, and geographic distribution of learning management systems in higher education literature, along with identifying impactful authors, sources, and publications, and highlight emerging research issues. The authors conducted bibliometric analysis on 1334 documents, related to the use of learning management systems in the context of higher education, extracted from Scopus database. The findings show a rapidly growing knowledge base on learning management systems in higher education, especially intensely in the years 2015-2020 and primarily from research in developed societies. This flourishing is consistent with the development trend of international education and the strong development of technology. In addition, the core literature was identified based on the volume of publications and citations. The results also reveal the emerging intellectual structure of the field and provide points of reference for scholars studying the discipline. This paper offers a knowledge map for future research assessments of learning management systems in higher education