bluuebunny/crossref_metadata_2025 huggingface dataset:
The Effect of Coffee Consumption on Blood Pressure and Sleep Duration of Baristas in Majalengka
Authors: Assegaf Hafidz Hilal , . Susianto , . Mamlukah
Published: February 2022

Drinking coffee is one of the most popular and loved by the community. The practice of drinking coffee has been associated with many health issues, both positive and negative. In association with their profession, baristas could consume more coffee, which is believed to affect their health. The objective of this study was to study the correlation between coffee consumption and baristas' blood pressure and sleep duration in Majalengka Regency. A cross-sectional design was used in this research. There were 40 baristas' in Majalengka involved in this experiment. A questionnaire and a sphygmomanometer were employed as instruments, and Spearman's instrument was used to examine the data. Respondents drank an average of 4 cups of coffee per day, had a systolic blood pressure of 117 mmHg, a diastolic of 77.75 mmHg. Sleep duration was negatively correlated with coffee consumption (p=0.012; c=-0.395). This study revealed that coffee consumption was not correlated with blood pressure (p=0.168). Coffee consumption has a negative relationship with sleep duration, which is controlled by the blood pressure variable, and it also does not influence blood pressure. In this study, we found the necessity of promoting healthy eating habits for baristas and cafe owners in the Majalengka Regency.
Growth Hormone (GH) Gene Polymorphism and Its Association with Meat Productivity in Two Rough Wool Sheep Breeds Grown in Russia's Dry Zone
Authors: Gorlov Ivan Fiodorovich
Published: February 2022

The article considers the methods of efficient use of the gene pool of rough wool sheep breeds in order to improve the level and quality of meat production. The research material was Edilbay (n=100) and Kalmyk fat-tailed sheep (n=100) breeds. The influence of the polymorphism of the genotypes of the growth hormone gene on meat indices were established; and the desired genotypes for further breeding work to increase their specific weight in the population structure were determined. The AB/GH genotype associated with the best meat production in carriers of this genotype has been identified as desirable. The results of the control slaughter have indicated Kalmyk fat-tailed rams of the AB/GH genotype to be superior to their AA/GH and BB/GH genotypes peers in terms of their pre-slaughter weight. The conducted research indicated the feasibility of genetic markers to optimize breeding programs in flocks of rough wool sheep in order to increase the meat production level. The obtained data confirmed the need to investigate the DNA markers associated with the productive qualities of sheep to get greater efficiency of breeding and enhance profitability of the sheep industry. © 2021 Friends Science Publishers
Gas Chromatography-Mass Spectroscopy and Histopathological Effects of Methanol Leaf Extract of Uvaria chamae on the Midgut of Sitophilus zeamais
Authors: Oboho Diligent
Published: February 2022

The present study was carried out to assess the effect of methanol leaf extract of Uvaria chamae using Gas Chromatography-Mass Spectrum (GC-MS) to determine the phytochemicals present and its effect on the histology of midgut of maize weevil, Sitophilus zeamais. Insects were administered with 10 mg/kg of the plant extract using diffusion method where insects were put in a petri dish containing various concentrations and observed to see the stage they begin to die due to toxicity and observed for 5 min. They were collected into foil processing paper and fixed in Bouins fluid for 24 h, repacked after 24 h and folded in fresh foil immersed in buffered formalin for histopathological studies. Result revealed that a severe degeneration de-arrangement of the respiratory tract epithelial lining, secretory lining cells and gastrointestinal layers with the destruction of the muscular layer when compared with the control. The methanol leaf extracts of U. chamae were preliminary screened for the phytochemicals. The extract shows the presence of cardiac glycosides, saponin, steroids/terpenes, flavonoids, alkaloids and phenols. GC-MS analysis of the extract showed the presence of 2-nitrobenzaldehyde (4.00), malic acid (2.04), L-aspartic acid (2.00), 1, 1, dimethylhydrazine (1.86), Cedrandiol (1.75), 2-amino-4-(2-methylpropenyl)-pyrimidin-5-carboxylic acid (1.56), thiirane (1.54), mercaptoethanol (1.11) and some minor compounds. The findings indicated that methanol extract of U. chamae is rich in phyto-compounds having biological activities on the midguts’ histology of S. zeamais. Therefore, it is recommended as an alternative for the synthetic insecticide used by farmers for the preservation of stored grains. © 2021 Friends Science Publishers
Responses of Tomato to Rhizoctonia solani Infection under the Salinity Stress
Authors: Mustafa Angham A
Published: February 2022

Ten isolates of Rhizoctonia solani Kuhen were obtained from the roots and crown of different cultivars of tomato (Solanum lycopersicum L.). The phenotypic and microscopic characteristics of these isolates were examined. The pathogenicity of each isolate to tomato seedlings was evaluated via a pot experiment. Results showed that the isolates had varying pathogenicity. Ten isolates were identified, four of which exhibited severe pathogenicity. The effects of three salinity levels (2, 6 and 12 dS m-1 NaCl) on fungal growth, and the effects of the interaction between pathogenicity and these salinity levels on the germination indicators, phenotypic growth and biochemical characteristics of three varieties of tomato, namely, Salimah, Bushra and Yassamen both in the field and the laboratory were assessed. The combined stress of the pathogenic fungus R. solani with the increase in NaCl concentration had a stronger pathogenicity to the tomato plant than individual stress alone. As a result, the germination indicators and all phenotypic traits of the plants substantially decreased. As salt concentration increased, the contents of chlorophyll a, b and total chlorophyll decreased. By contrast, the contents of carotenoids and anthocyanins increased and those of carbohydrates and proline in the leaves considerably increased. Analysis of the interactions between the R. solani treatments and the salinity levels revealed a strong correlation between the salinity levels and H2O2 accumulation. Our findings proved that the pathological effect of R. solani was observed to be more significant on tomato varieties under salinity treatments. © 2021 Friends Science Publishers
Depletion and Distribution Studies for Oxytetracycline in Broiler Chicken using Commercial ELISA with Subsequent Confirmatory Analysis by HPLC-UV
Authors: Mumtaz Mehwish
Published: February 2022

Tetracyclines are commonly used in livestock for the treatment of various diseases. Their residues above the maximum residual limit-MRL (200 μg kg-1) can cause health hazard issues not only in humans but also in animals. For this purpose, efforts were made to study distribution and depletion profile of Oxytetracycline in broiler chicken by ELISA and HPLC. Regarding this, an experiment was conducted on healthy chickens of average weight 600 ± 20 g. Six broiler chickens were treated with formulation (OXTRA L.A.) containing Oxytetracycline dehydrate @20 ppk solution (150 μL) equivalents to recommended dose 20 mg kg-1 through intramuscular route, while control birds were untreated. Treated chickens were slaughtered at an interval of 1, 8, 16, 32, 64 and 120 h. Different tissue samples including liver, kidney, thigh and chest muscles were collected and screened by ELISA (Cat No. 5091TC, Euro Proxima). Lowest detection limit (IC20) was calculated as 0.12 ng mL-1 and middle of the test (IC50) 0.5 ng mL-1 with recovery 75 to 86%. Reverse phase liquid chromatography (HPLC-UV) method was also standardized by using range of standards from 25 to 200 μg kg-1. Calibration curve showed good response with correlation coefficient (R2) 0.9727 and recovery 85 to 93%. Overall, withdrawal period (< MRL) in all tissue samples was calculated as 117 h (4.8 days) by ELISA while 128 h (5 days) by HPLC-UV. Both validated methods can be further utilized to generate reliable data for food safety measures in Pakistan to enhance international trade. © 2021 Friends Science Publishers
Prácticas experimentales de control digital con elementos de bajo coste
Authors: Izquierdo Borràs Adolf , Costa-Castelló Ramón
Published: February 2022

En este trabajo se presenta un entorno de bajo coste, compuesto por una placa Arduino y un circuito analógico, para su uso en prácticas de control digital. Se describe el entorno completo (tanto software como hardware), unas prácticas propuestos y se muestran algunos resultados experimentales.
Una estrategia de control mediante observadores para la temperatura en edificio de oficinas
Authors: Mascaró Palliser Rubén , Costa-Castelló Ramón , Álvarez Hervás José Domingo
Published: February 2022

En este trabajo se presenta un modelo térmico de una habitación basado en primeros principios junto con el modelo térmico de las paredes que la conforman. Ambos modelos permiten formular el modelo parametrizable de un edificio con independencia del número de habitaciones que tenga. Además, se presentan resultados utilizando el modelo de un sistema de control basado en realimentación de estados que ha sido diseñado tomando como referencia las técnicas de control LQR. El sistema de control utiliza un observador basado en un filtro de Kalman que permita estimar la temperatura de todas las paredes del edición, de esta manera, una futura implementación del sistema de control en un edificio real permitiría un ahorro considerable en lo tocante a la red de sensores que éste necesitaría para su funcionamiento.
Aspectos prácticos del control de actitud del satélite INTA-Nanosat-1B
Authors: Esteban Segundo , Girón-Sierra José María , Cercos Lorenzo , Rodríguez Polo Óscar , Angulo Manuel
Published: February 2022

Los Subsistemas de Determinación y Control de Actitud (ADCS) de las misiones satelitales ambiciosas utilizan habitualmente sensores y actuadores de muy altas prestaciones, como sensores estelares, girómetros láser y ruedas de reacción. En misiones de bajo coste no es posible utilizar estos sensores y actuadores por limitaciones presupuestarias. En estos casos es típico resolver el problema de la determinación con sensores magnéticos y solares, como es el caso del satélite INTA-Nanosat-1B (NS-1B). En muchas situaciones estos sensores no proporcionan suficiente información o precisión para determinar la actitud del satélite, por lo que es necesario subsanar estas deficiencias con una algoritmia más complicada. En NS-1B es necesario propagar matemáticamente la actitud del satélite durante el eclipse. Para ello es necesario caracterizar la principal perturbación que éste sufre, que es el Momento generado por el Dipolo Magnético (MDM). El artículo presenta diferentes aspectos práctico del ADCS de NS-1B, como los diferentes modos de determinación de actitud, la calibración en vuelo del magnetómetro y la estimación también en vuelo del MDM. Se muestra que estas aportaciones mejoran significativamente la precisión del ADCS en la zona de eclipse. Trasladar estas calibraciones y estimaciones a etapas de vuelo supone un ahorro significativo en costes y tiempo que puede ser interesante para misiones de bajo coste, como los CubeSats.
Modelado y análisis de misiones multi-robot mediante minería de procesos
Authors: Díez Félix , Roldán Juan Jesús , Barrientos Antonio
Published: February 2022

Las misiones multi-robot pueden alcanzar una complejidad comparable a los procesos industriales y la gestión de las empresas o los servicios públicos. La minería de procesos es una disciplina emergente que se está aplicando con éxito al análisis de estos sistemas. Esta disciplina aborda el modelado, el análisis y la mejora de procesos a partir de la información contenida en registros de eventos. Este artículo propone la aplicación de la minería de procesos en el contexto de las misiones con múltiples robots. En concreto, este trabajo realiza dos contribuciones novedosas: la definición de un protocolo para la utilización de estas técnicas en el contexto de la robótica, y la aplicación en un escenario real de vigilancia y extinción de incendios con una flota de UAVs. Los resultados muestran el potencial de esta herramienta para el análisis de misiones, la detección de problemas como cuellos de botella o asignaciones de recursos ineficientes y la propuesta de mejoras.
Introducción a la robótica con actividades de construcción, programación y competición de robots
Authors: Candelas Francisco A. , Torres Fernando , Puente Santiago T.
Published: February 2022

Este documento describe la planificación y el desarrollo de unas prácticas de laboratorio para la introducción de la robótica, así como algunas experiencias y resultados obtenidos de ellas. Las prácticas se han llevado a cabo en la asignatura “Introducción a la Ingeniería Robótica” durante el curso académico 2015-2016. Ésta es una asignatura obligatoria del primer curso del nuevo Grado en Ingeniería Robótica que ha empezado a impartirse en la Universidad de Alicante en el citado curso, y en la cual muchos alumnos tienen el primer contacto con la robótica. Por ello, el principal objetivo de las prácticas de laboratorio es introducir los conceptos básicos relacionados con el funcionamiento, diseño y programación de robots, a la vez que los alumnos desarrollan sus habilidades para resolver problemas típicos de ingeniería y se enfrentan a problemas prácticos que se dan en la construcción de un robot. Durante el curso, cada equipo de alumnos tiene que crear un pequeño robot móvil que sea capaz de resolver determinadas situaciones sobre un circuito propuesto, usando para ello los sensores y accionamientos adecuados. Además, al final de la asignatura, los equipos deben completar el circuito con sus robots, considerando aspectos como el tiempo y los fallos. Para construir los robots se ha escogido un kit comercial con piezas robustas y cuyo controlador está basado en Arduino/Genuido.
Sistema de control cooperativo aplicado a una red de tráfico urbano
Authors: Artuñedo Antonio , del Toro Raúl M. , Haber Rodolfo
Published: February 2022

Hoy en día muchas investigaciones persiguen activamente mejoras en el rendimiento de las redes de tráfico urbano a la vez que la reducción de la concentración de contaminantes en el aire. Un reto fundamental es la necesidad de cooperación entre las diferentes partes de estas redes, tales como vehículos y diferentes sistemas de infraestructura. En este trabajo se aplica un algoritmo para el control cooperativo como solución a problemas relacionados con la movilidad en las ciudades. El objetivo del sistema de control es disminuir la concentración de contaminantes del aire a través de la adaptación de ciclos de semáforos interconectados en red. Para ello el algoritmo emplea información de sistemas de monitorización de la contaminación y del tráfico en la ciudad y se toman decisiones de forma consensuada entre los diferentes dispositivos de control de la red de semáforos. La solución propuesta se ha validado en un entorno simulado y los resultados de las pruebas realizadas corroboran su viabilidad y potencialidad para coordinar las respuestas simultáneas tanto a niveles de contaminación como a flujos de vehículos en redes de tráfico urbano.
Una comparativa de la ciberseguridad en sistemas de control críticos: Smart Grids e IACS
Authors: Íñigo Ulloa Miguel Ángel , Calvo Isidro , Arambarri Jon
Published: February 2022

Hasta hace unos años, los sistemas de control complejos como los subsistemas del sistema eléctrico o los Sistemas de Control y Automatización Industrial (Industrial Automation and Control Systems, IACS) estaban en gran medida aislados o conectados a través de conexiones restringidas, normalmente con tecnologías propietarias, lo cual facilitaba su seguridad frente a ciberataques. Sin embargo, en los últimos años este panorama ha ido cambiando debido a la generalización de la conectividad, a la adopción de las tecnologías de comunicación modernas (Internet, comunicaciones inalámbricas, etc.), así como al uso de dispositivos electrónicos genéricos. Por ejemplo, tanto en el ámbito de las Smart Grids como en los IACS se han detectado evidencias significativas de ciberataques que explotan las vulnerabilidades que ofrecen dichos sistemas de control. Esta nueva situación requiere que los nuevos subsistemas de control implanten medidas de ciberseguridad para minimizar las consecuencias de estos potenciales ataques. Dado que tanto los IACS como las Smart Grids comparten muchas características, en este artículo se realiza una comparativa y se analizan algunas de sus vulnerabilidades más habituales. El artículo pretende servir como punto de partida para adentrarse en el complejo mundo de la ciberseguridad de este tipo de sistemas críticos.
Investigaciones experimentales sobre cooperación de vehículos autónomos en medio acuático
Authors: Girón-Sierra Jose María , Esteban Segundo , Jiménez Juan F.
Published: February 2022

El artículo resume un conjunto de recientes investigaciones experimentales sobre cooperación de vehículos autónomos en el mar o en aguas interiores de la Península. Se pone acento en el desarrollo y empleo de vehículos autónomos de superficie en diversos escenarios que requieren la cooperación de varios vehículos. Los ejemplos tratados son exploración (búsqueda y rescate), formaciones, y arrastre de barreras.
Desarrollo de un entorno colaborativo para aplicaciones de fusión
Authors: Chacón Jesús , Fabregas Ernesto , Dormido-Canto Sebastián , Vega Jesús , Sánchez Jose
Published: February 2022

El entorno colaborativo desarrollado permite realizar un envío de tareas a ser procesadas en clusters de supercomputación, sin necesidad de que los usuarios de las mismas deban conocer la infraestructura subyacente o estar familiarizados con las órdenes de más bajo nivel necesarias para interactuar con estos sistemas.
Arquitectura basada en ROS para el vehículo iCab (Intelligent Campus Automobile)
Authors: Marín-Plaza Pablo , Hussein Ahmed , Guindel Carlos , García Fernando , Martín David , de la Escalera Arturo
Published: February 2022

Este documento presenta la plataforma inteligente de investigación para entornos urbanos llamada iCab (Intelligent Campus Automobile). El principal objetivo es describir los pasos iniciales para alcanzar un vehículo autónomo funcional. La plataforma es un carrito de golf modelo E-Z-GO el cual ha sido modificado para operar de forma autónoma. El núcleo de la arquitectura está basado en ROS (Robot Operating System), y es capaz de recibir información de múltiples sensores con huella temporal utilizando un ordenador embebido. El sistema propuesto muestra las ventajas de la arquitectura basada en ROS para el manejo de datos entre procesos, así como la capacidad de gestionar, procesar y entender la gran cantidad de información recibida por las cámaras o el láser. La información de los sensores se ha integrado en la arquitectura para desarrollar aplicaciones innovadoras capaces de cubrir los requerimientos de las decisiones que tienen que tomar los vehículos autónomos. El ciclo de vida de los proyectos de estas características suele ser corto debido a la evolución de los sistemas de percepción del entorno y la capacidad de procesamiento; por tanto, la utilización de una arquitectura modular, portable e independiente de los sensores es indispensable.
Effects of hydroponic forms and nutrient solutions on some parameters related to yield and quality of celery (Apium graveolens)
Authors: Le Thi Thuy , Duong Thi Thao Uyen , Do Ngan Hang , Nguyen Phuong Thao , Pham Thi Van , Dao Thi Sen
Published: February 2022

This study was conducted to evaluate the effects of two forms of static hydroponics and dynamic hydroponics along with two nutrient solutions, BK-fast and Hydro Umat, on the growth and quality of celery plants. The results showed that "Thera" variety celery grown in the dynamic hydroponic system grew better than the static hydroponic growing in both studied solutions, with the plant height reaching 35.02 - 37.3 cm, 8.79 - 9.02 of leaves\plant, the fresh weight of 32.14 - 39.92 g. Regarding the quality parameters, the dynamic hydroponic form increased the content of reducing sugars, total organic acids and nitrate while reducing the content of the mineral elements including potassium, iron and magnesium that accumulated in the celery plant. For two nutrient solutions, Hydro Umat solution helped plants grow better and increased nitrate accumulation compared to BK-fast solution. However, the results on parameters containing of number of leaves\plant, reducing sugar content, the content of vitamin C and total organic acid were not statistical difference between celery plants nourished by these two solutions.
Update name of Amblovenatum J.P.Roux genus (Thelypteridaceae) and received new distribution of Amblovetatum terminans in Vietnam
Authors: Doan Hoang Son , Do Van Hai , Tran The Bach , Cheng Wei Chen , La Anh Duong , Trinh Van Hieu , Ha Huy Nhat , Ngo Van Tung
Published: February 2022

The genus Amblovenatum J.P. Roux is a small genus in the Thelypteridaceae. Previously, the genus Amblovenatum was named Amphineuron (Holttum, 1971). In 2007, David Middleton argued for the homonyms between the genus Ampineuron (Thelypteridaceae) and the genus Amphineurion (Apocynaceae). By 2009, the name Amblovenatum was used by J.P. Roux to replace the name Amphineuron. The genus Amblovenatum J.P. Roux has outstanding features in fronds, laminae, pinnae, lobes, segments, veinlets, sori, indusia, sporangia. Species of the genus Amblovanatum are distributed from East Africa to Polynesia; India to Northeast Australia; the remainder in Malesia and the Pacific, especially in New Guinea, and has been reported to be distributed in Vietnam. The study added information and explanations on the genus name change and updated the new name of the genus Amblovenatum. Description the morphological characteristics of the genus Amblovenatum, distribution, ecological biology, type; species description Amblovenatum terminans (Hook.) J.P. Roux includes scientific name, Vietnamese name, distribution, ecology, type, examined specimens.
Screening of potential cassava varieties for good tolerance under waterlogging conditions
Authors: Dethvongsa Sengsoulichan , Nguyen Anh Vu , Tran Khanh Van
Published: February 2022

The experiment screening of potential cassava varieties for good tolerance to artificial waterlogging was evaluated on 17 varieties of cassava in vitro at 3 months of age after planting in potting soil for 12 days through physiological parameters: number of leaves\plant, number of yellow leaves, number of wilted plants and chlorophyll content. The results showed that cassava varieties had different tolerance to waterlogging: some varieties showed physiological symptoms only after 3 days of growth on waterlogging conditions such as the number of leaves\plant decreasing to 83.93 %. 93.75 %, 93.81 %, 95.88 % and 96.48 % in cassava varieties C86, C23, Hanoi3, C84 and C31, respectively. After 6 days of waterlogging, the percentage of yellow leaves in some varieties of cassava had been increased, attained up to 40 % of the total leaves\plant turned yellow such as C71 (44.68 %) or C13 (53.12 %) varieties while other cassava varieties wilted and die 100 % such as Hanoi3, C10, C13, C34, C42, C66, C71, C84 and C86; along with the symtoms of morphological and growth of cassava varieties on waterlogging conditions, the total of chlorophyll content also decreased. After 9 days of waterlogging, only C60 variety remained chlorophyll content with 77.38 % but in other cassava varieties, the chlorophyll content was not more than 50 %. We founded that the longer the duration of waterlogging, the more tolerant response of the studied cassava varieties was revealed. After 12 days of experiment, we initially determined that the C60 variety was the best flood tolerance among the 17 studied varieties and this was a good source of materials on selecting the variety of flood tolerant cassava.
Classification and analysis of conserved motifs in the sucrose transporter family in quinoa (Chenopodium quinoa) by bioinformatics approach
Authors: Pham Phuong Thu , Chu Duc Ha , Nguyen Song Thao , Tran Thi Thanh Huyen
Published: February 2022

In this study, a total of 29 members of the CqSWEET family in quinoa (Chenopodium quinoa) has been comprehensively investigated by various bioinformatics methods. As the result, we indicated that the CqSWEET proteins were varied from 161 - 428 amino acid residues in size (17,7 - 47,7 kDa in weight). The isoelectric point of these proteins ranged from acid (4.9) to base (9,7), while the majority of the CqSWEET proteins are stable in the test tube. Our analyses also revealed that whole members of the CqSWEET family are hydrophobic, and a large amount of the CqSWEET proteins may localize in the secretory pathways. According to the unrooted phylogenetic tree, the CqSWEET proteins could be clearly classified into 3 distinct groups, as similar as in other higher plant species. Interestingly, the majority of the CqSWEET proteins contained 6 or 7 transmembrane helices. Our results also showed that a total of 4 conserved motifs has occurred in the majority of the CqSWEET family. Take together, our study could provide critical data for further functional characterization of the CaSWEET candidate genes related to the regulation of the growth and development in quinoa plants.
The content structuralization of the reproductive topic about the levels of life organization eets the general education Program in Biology 2018
Authors: Duong Tien Sy
Published: February 2022

The general education program 2018 was built in the direction of capacity development. To form and develop in students about the ability of biology subject; At the same time, contributing to the formation and development of students with major qualities and common competencies with other subjects, the primarily educational content of the Biology subject must determine the core educational content of Biology subject according to the approach to the Levels of Living Organization (LLO)- From Molecular, Cell, Organism, Population, Community Ecosystem, to Ecosphere. Those are topics that spanned from low LLO to high, reflected common characteristics of the living world such as energy metabolism and metabolism, growth and development, reproduction, induction, and evolution. But current general school biology textbooks, especially at the high school level, are compiled according to narrow specialized knowledge such as Genetics, Evolution and Ecology, that is, maintaining the opinion of single subject, so they have not fully grasped the point of view of program construction and development. The article only focused on researching and defining the content system of the topic "Reproduction" from the LLO: molecules, cells, bodies, populations to meet the general education program of biology in 2018, suggestions to overcome The compilation of the content of Biology textbooks is the current pure specialized knowledge of biology. Helping high school teachers avoid the trend of disorienting teaching that has been taking place at high schools since the renewal of the curriculum. general education program from 2006 up to now.
raining skill of constructing rubric in assessment to Biological student teachers
Authors: Khuu Thuan Vu
Published: February 2022

Currently, Biology Curriculum in New Educational Program (2018), which is a competency-based orientation program, requires assessing students’ competencies development by using a range of assessment methods, techniques and tools. Therefore, student teacher need to learn how to construct and use types of competency-based assessment tools (including rubrics) before they graduate and begin to teach. This article shows the procedure by which education students can learn how to construct rubrics for assessment in teaching Biology in high schools.
Using scientific inquiry lesons to teach Biology 8
Authors: Do Thi Chuyen , Phan Thi Thanh Hoi
Published: February 2022

Teaching towards the use of science topics in secondary school is one of the new directions. Through the implementation of scientific topics, students have developed specific subjects, while also developing qualities such as hard work, responsibility, honesty and common individual abilities such as self-study, communication and collaboration, problem solving and creativity. In this article, we develop a process for organizing the implementation of scientific topics for 8th graders in secondary school. The nature of the process is that under the organization and guidance of the teacher, students discover knowledge on their own, arrange information sources and design studies to prove. This process is illustrated in the teaching of Biology 8 with the subject "Study of measures to limit secondhand smoke through the manufacture of tobacco smoke purifiers"
Using virtual experiment - solutions for teaching practice biology for high school in online
Authors: Trinh Dong Thu
Published: February 2022

Using Virtual Experiment (VE) is considered as a visual tool to increase students' interest, stimulate curiosity and activate thinking of students. Consequently, it encourages creativity in learners, by exploring and interacting with information in a virtual environment. This article aims to propose a method to use VE to simulate biological phenomena and processes that in reality conditions are difficult by experiments to illustrate for students. VE is an effective support for hands-on learning of Biology experiments in high school.
Designing stem topic “the water cycle” for teaching content “substances are all around us” in the natural science subject for grade 6 students
Authors: Tran Thi Mai Lan , Cao Phi Bang , Nguyen Thi Thanh Van , Nguyen Thi Binh Yen , Chu Thi Bich Ngoc , Tran Anh Tuan
Published: February 2022

Designing STEM-oriented teaching activities has piqued the interest of educators across all subjects and grade levels. This article proposes how to organize the teaching of the topic “The cycle of water” in the sub-content of “Substances around us” in the subject “Natural Science” for grade 6 students, which clearly illustrated the activities of a STEM lesson. The findings of this study will be utilized as a guide for teachers to effectively implement their teaching and enhance students' capacity by planning activities for students to explore the natural world and use what they've learned to solve real-world challenges.
Design and learning games to organized teaching colorful content – natural Sciences 9 targets development cooperative capacity for students
Authors: Tran Thi Thanh Huyen , Ha Thi Lan Anh , Nguyen Thi Hang Nga
Published: February 2022

Teaching and developing learners' capacity are the basic orientation of the general education program as well as the general education subject program of natural sciences. The ability to cooperate is considered an important ability, one of the core competencies that need to be developed for students. There are many measures to develop cooperative capacity for students, in which learning games are one of the effective measures. In this article, we focus on analyzing the manifestations of cooperative competence as the basis for the design and use of learning games to organize teaching in order to develop as well as evaluate cooperative competence. student work.
The integration of reproductive health education in grade 11 Biology curriculum for improving problem-solving competence among students in Tra Vinh province
Authors: Nguyen Thi Hong Hanh , Le Thi Huynh , Duong Thi Anh Dao , Do Thi Nhu Trang , Nguyen Thi Lan Huong , Nguyen Thi Trung Thu , Le Thi Tuyet , Nguyen Thi Bich Ngoc , Le Ngoc Hoan , Nguyen Phuc Hung
Published: February 2022

Reproductive health education should focus on developing students' problem-solving competence through real-life situations. This study was conducted to determine the integrated address, build the topics of integrated reproductive health education in the chapter “Reproduction” - Biology 11, from which to evaluate the effectiveness of improving the problem-solving competence among students in Tra Vinh province. A intervention study was conducted on 160 students (17 years old) of two high schools in Tra Vinh province. Rubric was used to assess the problem-solving competence of learners. Two integrating reproductive health education topics were built in chapter “Reproduction”, forming and developing problem-solving competence for students. From the knowledge and skills related to reproductive health that students acquired through the two topics, the abilities to learn and detect problems; collect and analyze information, find knowledge related to the problem; make a plan to implement the solution; propose and select solutions; implement solutions; evaluate and adjust the solution; applied in situations related to reproductive health of students were developed. Scores for each criterion of problem-solving competence of students in the experimental class were significantly higher than those in the control class (P < 0.05) in each case exercise, as well as after finishing the two topics. Thus, integrating reproductive health education through two designed topics has improved the problem-solving competence of grade 11 students in Tra Vinh province.
Applying the 5E model in the teaching of experiments in natural science in junior high school
Authors: Phan Thi Hong The
Published: February 2022

Natural Science is one of the subjects that contribute to the development of students’ capability and personality, which aligns with the goal of the 2018 general education program. Natural Science enhances students’ various skills, especially the skill to research and explore. 5E model can help students achieve this. 5E model is built based on the theory of perceptual development in the learning process, in which students gain new knowledge based on the what they already know, through a learning process consisting of 5 stages: Engage, Explore, Explain, Elaborate, and Evaluate. The stage structure of this method makes it suitable for teaching scientific experiments, and it has been garnering attention from researchers nationally and internationally. In this article, the author focuses on the application of this model in the teaching of scientific experiments in natural science in junior high school in order to foster students’ ability and personality, thus improving the efficiency of the teaching of natural science in junior high school to meet the requirement of The General education version 2018.
Application of the 5E model in teaching Natural Science to develop students’ understanding of nature competence
Authors: Bui Ngoc Phuong Chau , Dang Thi Oanh , Do Thi Quynh Mai
Published: February 2022

According to the General Education Curriculum 2018, natural scientific competence is a specific ability that needs to be formed and developed for students in teaching Natural Science. Understanding nature competence is one of the three components of natural scientific competence. The expression of this competence is that students can perform some basic skills to understand and explain natural phenomena, demonstrate practical problems with scientific evidence. In this article, we analyze the application of the 5E teaching model as a measure to develop students’ understanding of nature competence and illustrate the use of this model in teaching the lesson “Some Natural Materials” - Natural Science Grade 6.
Teaching WebQuest with intergrated environmental education under the theme “Carbon footprint” to develop the ability to practically apply knowledge in General Chemistry
Authors: Ngo Thu Hang , Pham Thanh Nga , Tran Trung Ninh
Published: February 2022

Teaching environmental education plays an important role in educational goals. The chapter Carbon - Silicon of Chemistry 11 gives students knowledge about carbon and carbon dioxide, and this content is closely related to environmental science, making them ideal for raising students' awareness of environmental protection. This article introduces the content and organization of teaching as using a WebQuest with the integrated environmental education under the theme “Carbon Footprint”. The results of both theoretical research and empirical research from 60 students in two classes grade 11 in Ha Noi has proved the possibility of benefits that WebQuest with the integrated environmental education could give high school student's ability to practically apply their knowledge of chemistry and the learning outcomes of students were improved.
Applying circuits - training method combined with jigsaw technique to promote students' positive characteristics
Authors: Nguyen Quang Linh , Nguyen Mau Duc
Published: February 2022

Today, teachers should have the role of bringing learners from passiveness to activeness in the formation of qualities and competencies. Active learning - actually cognitive positivity - is a process, in which learners have the desire to understand, mobilize intelligence and put high energy into the process of acquiring knowledge. Learners should not be provided with designed lectures and ready knowledge, but they have to learn, analyze, practice handling situations and solving problems on their own. Applying active teaching techniques in the teaching process is one of the most effective ways to promote learners' positivity. In the scope of this article, we apply the form of station-based teaching combined with the puzzle technique to promote the students' activeness and initiative.
Design learning activities using microscale experiment in teaching Chemistry at High schools
Authors: Thai Hoai Minh , Dinh Thi Xuan Thao
Published: February 2022

Using microscale experiments in teaching Chemistry has been interested and studied worldwide. Microscale experiments bring many benefits such as using compact size equipment, flexible movement, saving chemicals, significantly reducing waste of chemicals into the environment, etc. Besides, using microscale chemistry experiments brings many benefits, such as developing students' chemistry competence, integrating green chemistry education, and enhancing students' learning interests while saving costs and time. This paper presents the theoretical and practice basis, fundamental principles, procedure, and ideas to develop competency-based teaching activities using microscale chemistry experiments in the chemistry classroom followed the General Education Program 2018.
Develop practical exercises in the topic of alkali metals, alkaline earth metals and aluminium (Chemistry Grade 12)
Authors: Nguyen Van Hai , Hoang Tuan Nam
Published: February 2022

Alkali metals, alkaline earth metals, aluminium and their compounds have been widely used in production and life. In this paper, practical exercises about salt, iodized salt, baking soda, hard water, lime calcination, heat, electrical work, metal fabrication are developed. These exercises are integrated with math, physics, biology and the environment in order to create qualities and capabilities for learners.
Building a STEM lesson plan of science subject to meet the General Education Curriculum 2018
Authors: Nguyen Thi Thanh , Phan Thanh Ha
Published: February 2022

The Fourth Industrial Revolution (Industry 4.0) has been changing our living environment and habits. Therefore, education in our country needs to change in order to create high-quality human resources that can meet the demands of living in need of using technology and controlling technology. One of the innovative directions is teaching in the direction of STEM education. When bringing STEM education into high schools, the way of presenting content in the form of STEM lessons has many advantages and is highly feasible in the economic and educational conditions of our country. For the implementation of the general curriculum2018, teachers are facing many difficulties when developing STEM lesson plans. Therefore, the article presents some conceptions of STEM education; STEM education orientation in the general curriculum of Natural Science 2018; propose Building a STEM lesson plan for the circuit of Substance and substance change, the subject of Natural Science under the guidance of Official Dispatch No. 3089\BGDĐT-GDTrH and give illustrative examples for the proposals.
STUDENTS’ STRATEGIES TO MAINTAIN PARTICIPATION IN ONLINE SPEAKING TASKS: A CASE STUDY
Authors: Nguyen Hong Lien
Published: February 2022

The online teaching and learning have, to some extent, impacted participation of students in doing their classroom activities. This study is set out to shed light on students’ use of strategies to maintain successfully their participation despite some setbacks of digital settings. Combining the Participation Framework and the Conversion Analysis methodology, the research carries out a microanalysis in the context of an online students’ collaborative speaking task. This micro study analyses 24 recordings of an EFL lesson with total 80 senior students. The findings indicate that (1) verbal cues namely self-selecting, switching to mother tongue and repeatedly choosing a specific student; (2) non-verbal strategies such as smile\laugh, hand motions, leaving cameras\microphones on facilitate students in their direct participation of the online discussion. The study also suggests some implications for educational purposes.
A CALL FOR ATTENTION TO DEVELOPING EARLY INTERVENTION POLICY AND SERVICES FOR YOUNG CHILDREN WITH DISABILITIES IN VIET NAM
Authors: Phan Thi Thuy , Nguyen Thi Tham , Tran Thi Vang
Published: February 2022

Viet Nam has a great early education system for typical children from infants to ages six years old. However, there is a lack of early intervention services to support young children with disabilities and their families from birth to 3 years. If children with disabilities can receive appropriate services and develop their potential abilities, they may successfully learn and attend inclusive education. This article highlights the importance of early intervention, current issues, and trends of early intervention in Vietnam, compared to the early intervention issues and trends in the United States. Based on the theories and current practices of early intervention, the authors will articulate the need for an early intervention policy and provide recommendations to develop early intervention in Vietnam.
PARENTS AND TEACHERS’ PERSPECTIVE ON BUILDING RULES WHEN TEACHING ONLINE FOR PRIMARY STUDENTS
Authors: Vu Thi Mai Huong
Published: February 2022

Online teaching rules are very important and an integral part of the virtual classroom environment, especially when the covid 19 pandemic has transformed the teaching process. Each online class must have rules and require everyone to follow to create the best culture and order to promote the quality of teaching, learning and students, especially primary school students. The article’s major research method is quantitative, that is, surveying teachers and students' parents (1208 parents and 368 primary teachers, they come from 4 private primary schools and 16 public primary schools) to find out the importance of rules in online classroom management and the characteristics of rules of effective online classroom management. Research results show that teachers and students' parents agree on the role of building rules in online classroom management. In addition, online classroom rules need to be short, easy to understand, easy to implement, and involve students in the development process.
THE IMPLEMENTATION OF EMI IN VIETNAMESE UNIVERSITIES: CHALLENGES AND ITS POSSIBLE SOLUTIONS
Authors: Nguyen Thi Thu Ha
Published: February 2022

The internationalization of education through English as Medium of Instruction (EMI) is growing really fast around the world. Vietnam has not been an exception in this trend. The Vietnamese government has promoted EMI with the objective of enhancing the quality of Vietnamese higher education, overhauling the outdated curriculum, and lifting the ranking of Vietnamese universities. Besides the benefits stated, some drawbacks have hindered the process. This project analyzes the different challenges of EMI implementation that have been described by different authors and it also refers to partial EMI as a possible feasible solution for the gaps of full EMI that have arisen worldwide.
NON-ENGLISH MAJOR STUDENTS’ LEARNING ENGAGEMENT IN TASK-BASED LANGUAGE LEARNING
Authors: Vu Thi Minh Tam , Tran Quoc Thao
Published: February 2022

This paper presents the findings of a quantitative study exploring non-English major students’ learning engagement in task-based language learning (TBLL) in the context of a university in Ba Ria-Vung Tau province. This study involved 200 non-English-major students in answering questionnaires. The SPSS software was employed to process the data. The findings revealed that non-English major students had a high level of learning engagement in TBLL. Three major factors, viz. teacher-related factors, learning contextrelated factors and student-related factors were believed to positively affect their learning engagement in TBLL. Among three factor groups, with their distinctive features, learning context-related factors proved to be the most crucial one in the TBLL class, while teacherrelated factors and student-related factors played an indispensable role in enhancing students' speaking competence and motivating them to speak English. Additionally, this study also showed that the more students got involved in TBLL, the more positively their learning engagement in TBLL was affected by the three named factor groups.
THE EFFECTS OF ONLINE FLASHCARDS ON LANGUAGE LEARNERS’ VOCABULARY SIZE
Authors: Tran Thi Thuy Linh
Published: February 2022

The purpose of this study is to investigate the effects of Quizlet online flashcards on language learners' vocabulary size. The participants were 76 English major students of three classes at pre-intermediate level using their flashcards for 11 weeks at Hanoi University of Natural Resources and Environment (HUNRE). An action research on vocabulary improvement of non-English major learners through using online flashcards at HUNRE was conducted to investigate learners’ vocabulary acquisition in second language learning. The study indicated that online flashcards positively impact learners' vocabulary size; however, there was a small proportion of the participants did not gain benefits from using Quizlet online flashcards.
ENGLISH-MAJORED STUDENTS’ USE OF SELF-REGULATED LEARNING STRATEGIES IN ENGLISH WRITING COURSES AT TERTIARY LEVEL
Authors: Le Van Tuyen , Tran Nhat San
Published: February 2022

Over the past three decades, self-regulated learning (SRL) has been considered a powerful new learning theory that enables students to apply knowledge and skills in real-life situations and make them more autonomous and independent in language learning. It is of vital importance to explore how students use SRL strategies in learning language skills. The current study aims to investigate the use of SRL strategies in English writing courses at the tertiary level. The study was conducted at Ho Chi Minh City University of Technology (HUTECH University) in Vietnam with the participation of 154 second-year English-majored students. Both quantitative and qualitative data were gathered via the employment of the questionnaire and interview. Descriptive statistics and content analysis were employed for data analysis. The findings of the study revealed that all the 9 categories with 40 SRL strategies reflecting the four dimensions of regulation, namely cognition, metacognition, social-behavior, and motivation were used by the English-majored students with a rather high frequency. The highest frequently utilized category was “feedback handling strategies” and the least frequently used categories were “goal-oriented monitoring and evaluating” and “peer-learning”. The findings of the study also offer several pedagogical implications for teachers, students and researchers. It is expected that the findings of the study would partly contribute to the existing knowledge of the study field and shed light on the importance of the use of SRL writing strategies in English education at HUTECH University in particular and at the Vietnamese tertiary level in general.