Abstract
The integrated course “Science” is being introduced into school curricula in Ukraine for the first time. The article analyzes the experience of implementing an integrated course “Science” in ...schools of Ukraine. The advantages and disadvantages of various curriculum projects of the integrated course “Science” are discussed. The analysis of the content of the project No 2 of the curriculum of the integrated course “Science” is made. Based on the results of two years of work on the implementation of the experimental integrated course “Science” in the profile school, the analysis of the main problems that arose during the implementation of this course and discusses possible ways to solve them.
Background
Microbiome-modulating interventions are promising for treatment and prevention of metabolic syndrome. The number of probiotic strains demonstrated ability to decrease cholesterol level in ...vivo, however, it was poorly confirmed in a clinical setting. The aim was to study the effects of
L. acidophilus
IMV B-7279,
L. casei
IMV B-7280,
B. animalіs
VKL and
B. animalіs
VKB separately and in various compositions on the level of serum cholesterol, gut microbiota contents and liver morphology on a high-calorie-induced obesity model in BALB/c mice.
Materials and methods
We used for the study female BALB/c mice 6–8 weeks old (18–24 g). Experimental animals were fed by a fat-enriched diet (FED), and 8 experimental groups were formed (12 mice in each group) to test strains of probiotic bacteria
L. delbrueckii
subsp.
bulgaricus
IMV B-7281,
L. casei
IMV B-7280,
B. animalіs
VKL and
B. animalіs
VKB and compositions. We used ultrasound for in vivo assessment of the liver and visceral (mesenteric) fat size. In the blood serum of the obese mice, the level of cholesterol was estimated. The liver morphology and gut microbiota of obese mice were studied.
Results
We revealed that after treatment with all of the studied probiotic bacteria and compositions of
B. animalis
VKL/
B. animalis
VKB/
L. casei
IMV B-7280, the weight of obese mice decreased, and cholesterol and its fraction levels in serum were reduced. The size of the liver slightly decreased after treatment with
L. delbrueckii
subsp.
bulgaricus
IMV B-7281,
B. аnimalis
VKB or probiotic compositions; we observed reduction of the mesenteric fat size after injection of all these probiotic bacteria (separately) and probiotic compositions. We defined the strain-dependent effects on serum lipid profiles, liver morphology and the gut microbiota. The
B. animalis
VKL/
B. animalis
VKB/
L. casei
IMV B-7280 composition effectively recovered the liver morphological structure of obese mice. The number of
Lactobacillus
spp.,
Bifidobacterium
spp. and coliform bacteria increased, the number of staphylococci and streptococci reduced, and the number of microscopic fungi significantly decreased in the gut of obese mice after treatment with
L. casei
IMV B-7280,
L. delbrueckii
subsp.
bulgaricus
IMV B-7281,
B. animalis
(separately) or their compositions.
Conclusion
L. casei
IMV B-7280 (separately) and a composition of
B. animalis
VKL/
B. animalis
VKB/
L. casei
IMV B-7280 are effective at decreasing the weight of obese mice, decreasing cholesterol level, restoring the liver morphology and beneficially modulating the gut microbiome in high-calorie-induced obesity.
Abstract
This paper introduces the Proceedings of the XV International Conference on Mathematics, Science and Technology Education (ICon-MaSTEd 2023), which took place at the Kryvyi Rih State ...Pedagogical University, Ukraine, from 17 to 19 May 2023. It provides background information and the organizational structure of the conference, as well as the structure of the proceedings. It also acknowledges the many people who contributed to the success of the conference.
This paper explores the significance of student research activities in fostering the key competencies essential for the future specialists in the field of chemistry. Specifically, it emphasizes the ...importance of primary school students' ability to solve experimental problems in chemistry and highlights the role of virtual chemical laboratories in facilitating the development of these skills. The concept of ``experimental chemical problem"'' is thoroughly analyzed, providing a comprehensive understanding of its essence. Moreover, the paper delves into the concept of ``virtual chemical laboratories'', discussing their primary types, advantages, and disadvantages, which define the methodical boundaries for their implementation in chemistry education, particularly in supporting educational chemical experiments.Furthermore, the study scrutinizes the major benefits and limitations of virtual chemical laboratories regarding the modeling of chemical processes necessary for creating virtual experimental problems in chemistry. The distinctive features of VLab, a virtual chemical laboratory, are elucidated, shedding light on its operational essence and the process of designing virtual laboratory work within it. Notably, two types of virtual chemical laboratories, namely distance laboratories and imitation laboratories, are identified as integral components for supporting students' research activities. The synergistic combination of these laboratory types, particularly in the study of the topic ``Solutions'', offers an opportunity to harness the advantages of each type and elevate the level of support for students' research activities during the learning process.To exemplify the practical implementation of this approach, the paper presents developed virtual chemical works, providing insights into their essence and purpose. Drawing from the successful integration of virtual chemical laboratories in diverse educational institutions, the paper justifies the assumption regarding the effectiveness of utilizing the developed virtual experimental chemical problems to foster students' research activities within the context of studying the topic ``Solutions''. This research contributes to the field of educational technology by providing evidence-based insights into the potential of virtual chemical laboratories for enhancing student engagement and competency development in chemistry education.
The organization of high school students' research and learning activities in chemistry requires a significant amount of experimental work. The performance of experimental work in chemistry at school ...faces a number of problems, both purely material and organizational, to which the need for distance learning has recently been added. This article describes the state of use of augmented reality technologies in modern chemistry education and the possibilities of using augmented reality technologies to support students' learning and research activities in chemistry. To solve the research tasks, cloud-based augmented reality development tools (A-Frame and AR.js) were used. The developed tool is a virtual chemistry laboratory using augmented reality technologies: individual markers correspond to reagents, and a pairwise combination of markers triggers a video recording of chemical interaction between the corresponding pair of reagents. The article describes the development of augmented reality software to support eleventh graders' learning and research activities in chemistry in the form of an augmented reality-based virtual chemistry laboratory and its implementation in the teaching process.
Chemistry educational and research activities must be planned in a way that makes extensive use of experimentation. The implementation of chemistry experiments in the classroom is fraught with ...organizational and logistical challenges, and more recently, the necessity for online learning has been added. The article explains the current state of augmented reality (AR) technology use in contemporary chemical education and the potential for using augmented reality technology to enhance students' chemistry research projects. To complete the research tasks, augmented reality cloud technologies (A-Frame and AR.js) were used. The developed tool is a virtual chemical laboratory that incorporates augmented reality technologies (AR-based virtual chemical laboratory): individual markers correspond to reagents, and a pair of marker combinations activates the playback of a video showing the chemical interaction between the associated pair of reagents. The article describes the development of augmented reality software to support the research activities of 11th grade chemistry students in the form of an AR-based virtual chemical laboratory, as well as its implementation in the teaching and learning process.
Abstract
A training kit has been created to study the topic of “Oxygen-containing organic compounds” using augmented reality. We chose the Blippar platform to work, it is quite simple and relatively ...free. The kit contains markers we have developed, on which, with the camera from the Blippar application, students will be able to observe thematic experiments and molecules of individual substances with the help of augmented reality. There was also a study on the effectiveness of our developments to implement augmented reality in the course of chemistry. The study results showed an increase in pupils’ motivation to study chemistry and their level of interest, facilitating the perception of the theoretical foundations of organic chemistry related to the spatial structure of molecules. Also, the use of augmented reality technologies creates the conditions for improving the level of digital and technological competencies of students, provides support for high quality teaching of chemistry in distance learning.
The role of information and communication technology as well as teaching aids in specialized chemistry instruction was examined in the article. One of the key outcomes of specialized instruction in ...chemistry is the development of research skills in high school students. To ensure conformity with the principles of specialized chemistry teaching, ICT tools have been analyzed and systematized. The decision to use ICT tools to implement specialized chemistry training and strengthen the research skills of high school students in specialized chemistry training had supported. The findings of a study to assess the feasibility of implementing certain ICT tools to strengthen the research skills of high school students in specialized chemistry training are provided.
The COVID-19 pandemic has disrupted science education, forcing teachers and students to switch to online and hybrid modes of learning. This paper reviews recent research on how to cope with these ...challenges using various innovative teaching strategies. These include online platforms and tools, historical and philosophical perspectives, and holistic approaches to science education. The paper discusses the implications of these findings for the future of science education.
Abstract
This paper presents the preface of the proceedings for the 4th International Conference on Sustainable Futures: Environmental, Technological, Social, and Economic Matters (ICSF 2023), a ...multidisciplinary event that explores the challenges and opportunities of sustainability in various domains. The preface outlines the conference’s objectives, themes, workshops, and topics, as well as its contribution to advancing sustainable development and global dialogue. It also acknowledges the efforts and inputs of various stakeholders who have made the conference possible, especially in light of the pandemic situation. Furthermore, it thanks IOP Publishing for its support and flexibility in facilitating open access publishing. The paper concludes by looking forward to future editions of ICSF and the ongoing quest for a more sustainable and interconnected world. The paper invites readers to delve into the rich and diverse content that shapes this influential conference.
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