Snejana Dineva
Trakia University, Faculty of Technics and Technologies, Faculty Member
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Gathering the opinion of educators, education experts and executives collective vision for learning known as the Framework for 21st Century Learning has been constructed. According to this Framework, students must master innovative skills... more
Gathering the opinion of educators, education experts and executives collective vision for learning known as the Framework for 21st Century Learning has been constructed. According to this Framework, students must master innovative skills and expertise novel knowledge in order to succeed in comprehensive and competitive workenvironments and life that becomes more and more complex each new day. An emphasis is made on creativity, critical thinking, communication and collaboration mentioned as essential to adapt students to the future.In that article, we try to figure out how developing the Web content and technology innovations influenced onquality of learning process and help students acquiring the needed skills.
The report discusses the subject of student's collaboration, communication and blended learning. The purpose of the report is to describe the extent of skills that students need to acquire in the field of collaboration and... more
The report discusses the subject of student's collaboration, communication and blended learning. The purpose of the report is to describe the extent of skills that students need to acquire in the field of collaboration and communication in blended learning and the use of Moodle virtual learning environment. For this purpose, the following questions are presented and analysed in Materials and Methods: Communication and collaboration as part of Digital communication; Benefits of Collaboration Software; What is mean to be Collaborative. In the Discussion and Results section are analysed Moodle activities for the development of Communication and collaboration skills in blended learning and Moodle's Plugins to create an environment for communication and cooperation. Conclusions are drawn on the application of the various blended learning tools and the learning outcomes that can be achieved.
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This report based on our experience and collected data explain the useful<br> teacher'sfeedback, which arereceive from implementingblend learning through creating on line e-training course, multimedia e-books, self-assessment... more
This report based on our experience and collected data explain the useful<br> teacher'sfeedback, which arereceive from implementingblend learning through creating on line e-training course, multimedia e-books, self-assessment tests and etc., on Moodle online learning management system. The sites of e-learning of Microbiology, Chemistry, Ecology and Biochemistry were among the first developed and used for full and part time study in blend learning. The obtained feedback that has been registered is proper and entire information about student process of learning; higher quality of acquire knowledges; better and low cost support for student training; adequate students assessment and efficacy in applying e-test for exam.
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Abstract: The study estimated modification in morphology and structure of Acer campestre L. leaf<br> blades under two diverse levels of industrial air contamination. The samples have been collected from<br> the same trees... more
Abstract: The study estimated modification in morphology and structure of Acer campestre L. leaf<br> blades under two diverse levels of industrial air contamination. The samples have been collected from<br> the same trees growing on the identical place but in two separated with long time periods: 1990, 1991 –<br> first period and 2004 – second; that are characterized with great difference of pollutant levels,<br> especially for SO2 at least twice in amount through heavy polluted period. The structure and developing<br> of winter buds and leaves lamina have been monitoring through severe contamination to reveal any<br> adaptation responses. Increasing of palisade tissue and decreasing of spongy parenchyma have been<br> detected, during high levels of industrial contamination, but not in the period with relatively low<br> pollution levels, that correlated with increasing the palisade ratio. Augmented palisade ratio stated for an adaptive...
Assessing the adaptable capability of tree plants to air and soil pollution is an important task, because of nowadays increasing technogenic pollution and global warming trend of climate change. Plants are well known with their ability to... more
Assessing the adaptable capability of tree plants to air and soil pollution is an important task, because of nowadays increasing technogenic pollution and global warming trend of climate change. Plants are well known with their ability to absorb, filtrate, localized air contaminations, and mitigate the adverse effect of pollution. The goal of study is to estimate the adaptability of Acer saccharinum L. to industrial air pollution through observation of the leaf blade structure modifications. Under conditions of industrial air contamination has been registered reduction of lamina surfaces. The leaf blade structure of Acer saccharinum L. is characterized with high coefficient of palisadness naturally (65%). In conditions of industrial pollution silver maple developed thicker cutin (p < 0.05), smaller epidermal cells (p < 0.05) and expanded photosynthetic mesophyll tissue (p < 0.0001), which strengthen the capacity of plant to overcome the adverse conditions. The high coeffici...
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The article reviews the importance of long-life learning nowadays and the new semantic e-learning environment creatingduring last years to support the requirements of that conditions. The education in 21th century is a long-life learning... more
The article reviews the importance of long-life learning nowadays and the new semantic e-learning environment creatingduring last years to support the requirements of that conditions. The education in 21th century is a long-life learning education with commitment of formal, non-formal and informal learningsupportedbyNew Learning Environments.The e-Academia frameworkhas been adopted and created with real and virtual members of organizations, applications for communication and collaboration, e-Learningand directory services.The aim of article is to describe the changes of education system in the last decades forced by the innovations of technology and their implementation in the life. The characteristics of the New Learning Environments are analyzed and the concept of long-life learning.
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This report regarded student success in higher education that is with high importance and one of the main concern for all institutes. It reviews how student success can be enhanced using collaboration tools in VLE and the methods that are... more
This report regarded student success in higher education that is with high importance and one of the main concern for all institutes. It reviews how student success can be enhanced using collaboration tools in VLE and the methods that are used. The base types of collaboration are described too. The features of effective learning environment that result to higher student success are discussed.The report analyzes the experience of Faculty of Technique and Technology - Yambol from Thracian University according to the EU DigComp 2.1 framework and the competences that the students should acquire for communication and collaboration.
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Trees can absorb toxicants and mitigate air pollution. Morus alba L.(Mulberry) is a well-recognized tree species that has high ecological plasticity and endurance toward adverse environmental conditions. The structure of Morus alba L.... more
Trees can absorb toxicants and mitigate air pollution. Morus alba L.(Mulberry) is a well-recognized tree species that has high ecological plasticity and endurance toward adverse environmental conditions. The structure of Morus alba L. leaf blades has been investigated in order to reveal its remarkable resistance performance toward industrially contaminated environment. Field observations showed that laminas of Morus alba L. were in good state and well-developed, without significant decrease of leaf blade surfaces, and with no chlorosis and necrosis, till the end of vegetation period.<br> Anatomical measurements registered greater leaf thickness of laminas from trees of polluted region. Under the industrial pollution the cuticle layer of adaxial surface increased, while from the abaxial side it decreased. In the adaxial surface epidermis have been detected idioblasts that perhaps strengthen the lamina surfaces and prevent from direct injury from air toxicants. The mesophyll str...
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Abstract: Leaf blades of Norway maple (Acer platanoides L.), growing in heavily polluted industrial area have been studied for anatomical changes developed under the influence of the industrial contamination (with SO2, NxOx, Pb, As). The... more
Abstract: Leaf blades of Norway maple (Acer platanoides L.), growing in heavily polluted industrial area have been studied for anatomical changes developed under the influence of the industrial contamination (with SO2, NxOx, Pb, As). The aim of the examination was to reveal the dynamics in the development of leaf blades and to trace the impact of the contaminated air on the leaf structure of Norway maple. The conducted study registered acceleration of the vegetative growth of the leaf blades that is manifested through approximately two weeks earlier appearance of leaves on the tree, faster linear growth and strength-ened the xeromorphic traits in the leaf structure of the tree plants from the contaminated region. The ob-served changes are regarded as adaptation of the plant to the polluted environment, i.e. as tolerance.
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The purpose of this article is to evaluate the toxicological effect of wastewater emitted from "Radomir Metal Industries". It has been registered that the range of 50% mortality (LC50) of great water flea (Daphnia magna St.) is... more
The purpose of this article is to evaluate the toxicological effect of wastewater emitted from "Radomir Metal Industries". It has been registered that the range of 50% mortality (LC50) of great water flea (Daphnia magna St.) is limited between 75% and 80% effluent. The data mortality rate-effluent dilution for Pseudorasbora parva well correlated with linear regression, R2=0.86. LC50 is reported from exposure to raw sewage (100%). Results indicate that even when individual concentrations of toxic metals are within the permissible limits the effluent remains toxic for the hydrobiota perhaps due to the combine effect of the contaminants.
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In this paper, an analysis of the possibility of passive determination of the degree of environmental pollution based on data from the leaf blade of mulberry is made. With existing solutions in this area, the mulberry has been found to be... more
In this paper, an analysis of the possibility of passive determination of the degree of environmental pollution based on data from the leaf blade of mulberry is made. With existing solutions in this area, the mulberry has been found to be under-researched. A disadvantage of the available solutions is that spectral indices are used, which is not a sufficient criterion for passively determining the degree of air pollution based on the surface characteristics of the mulberry leaves. Methods have been used to reduce the amount of data by latent variables and principal components. It has been found that a kernel variant of the principal components, combined with linear discriminant analysis, is an appropriate method for distinguishing the degree of air pollution from mulberry leaf data. The results obtained can be used to refine the approaches used to passively determine the degree of air pollution in the habitat area of the plant. Methods and software tools could be used to develop mobi...
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The industrial environmental “hot spots” create significant ecological hazards for terrestrial and aquatic ecosystems. Guidelines and legislation often refer to the total amount of contamination without to estimate the complex... more
The industrial environmental “hot spots” create significant ecological hazards for terrestrial and aquatic ecosystems. Guidelines and legislation often refer to the total amount of contamination without to estimate the complex relationship between the environmental factors and the toxicant. In cases of suspicion for adverse effect on the environment bio-assessment can be used as a tool to detect the presence of hazardous chemicals. Bioassays with vascular plants are considered to be universal tools of identifying the combined effects of pollutants. The purpose of this article is to evaluate the toxicological effect of plant-soil complex treated with wastewater from Radomir Metal Industries ". The conclusion is that the sewage from the metallurgical pant “Radomir Metal” is used properly for irrigation of arable land. The question can be which kind of plants is suitable to be cultivated there. The effluent is seems toxic for the aquatic systems and has a slight negative impact on...
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The aim of the current study is to evaluate Cu accumulation levels in Lepidium sativum L. growing in different media, as-1 distilled water (DW)with +125 and +250 mg.l added copper ions, and purified industrial wastewater (PIWW), with the... more
The aim of the current study is to evaluate Cu accumulation levels in Lepidium sativum L. growing in different media, as-1 distilled water (DW)with +125 and +250 mg.l added copper ions, and purified industrial wastewater (PIWW), with the same 2+ concentrations of copper ions in addition. It was registered that the accumulation of Cu in Lepidium sativum L. depended from 2+ the concentration of ions in the water media, as double increase of Cu reflected to approximately three times more accumulation 2+ in the tissues of control samples, while in IPWW the effect was only double bioaccumulation. The excess of Cu ions in media did not influenced on the accumulation of Mn ions. In media from purified wastewater, the addition of copper ions diminished the uptake of Fe ions, and increased Zn bioaccumulation.
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The potatoes are common food for people of all ages and very often are used in Bulgarian kitchen as a main component of core dishes and also separately under different types of salad. The aim of this article is to give information about... more
The potatoes are common food for people of all ages and very often are used in Bulgarian kitchen as a main component of core dishes and also separately under different types of salad. The aim of this article is to give information about the nitrate content in potatoes from the commercial chain in Bulgaria. The monitoring have been conducted during June, July and August. The measurements of NO3- ions were carried out with a Greentest appliance, Model ECO 5. The samples from the conducted monitoring were with higher NO3- content for the fresh potatoes that have been accepted and recommended from EU as healthy one. The highest content of NO3- in fresh potatoes were 645 mg/kg measured for June, 340 mg/kg for August, and 500 mg/kg for fresh potato produces from BG measured in August, at the accepted safety level 250 mg/kg. The red potatoes were with average 287 mg/kg nitrate levels. The amount of nitrates are not eliminated during cooking processes, so that results are warning that the f...
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A virtual learning environment has been created using Moodle software platform and has been applied in Technical College of Yambol. Multimedia courses have been created as well. In our paper we give the assessments of the requirements for... more
A virtual learning environment has been created using Moodle software platform and has been applied in Technical College of Yambol. Multimedia courses have been created as well. In our paper we give the assessments of the requirements for the teachers regarding implementation of high quality open and distance learning process. Using interactive whiteboards and possibilities for the teachers to record their instruction and post the material on-line is a good opportunity for realizing ODL-process. The paper presents possibilities for using interactive whiteboards as an educational tool and their application into the practice. The experience and perspectives of their use in educational process at the Technical College of Yambol is shown. Key words: ODL process, virtual learning environment, interactive whiteboards, requirements to teachers. INTRODUCTION The term open and distance learning (ODL) and its definition are relatively new in the field of education, having gained prominence on...
Research Interests: Education and E Learning
... specialized technologies. Hot Potatoes (http://hotpot.uvic.ca/, 08.05.2010) are not part of MOODLE but VLE possesses the necessary instruments to allow for exercises created in it to be imported and integrated in. Hot Potatoes ...
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The strengths and weaknesses of different online technologies and learning methods have been examined by combining the blended learning program with practical work on institutional e-learning projects. There are differences between the... more
The strengths and weaknesses of different online technologies and learning methods have been examined by combining the blended learning program with practical work on institutional e-learning projects. There are differences between the traditional e-learning system and the new E-Learning 2.0 training. At present time, the new technologies provided by Web 2.0 better correspond to the needs of both students and teaching staff. The new Web 2.0 allows the ”promoting of individual creativity”, together with the ”use of collective intelligence”. A comparison of the two development stages of the e-learning tools has been completed and the advantages of E-Learning 2.0 are shown. The main components of Web 2.0 are provided and the use of wiki as an up-to-date collaboration tool for on-line teamwork is shown.
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Knowledge of crustal thickness and velocity is important to obtain precise hypocenter locations, as well as to constrain tectonic interpretations for a particular region. In southern Ontario, the installation of the POLARIS network... more
Knowledge of crustal thickness and velocity is important to obtain precise hypocenter locations, as well as to constrain tectonic interpretations for a particular region. In southern Ontario, the installation of the POLARIS network started in 2001. At present, there are 23 broad-band stations installed in this region. Together with the information from the Southern Ontario Seismic Network (SOSN), which operated with short-period sensors between 1990-2000, more than 200 recorded events (earthquakes and quarry blast) are available for velocity modeling. The arrival-time data from local events and some well recorded quarry blasts are used for a preliminary estimation of the 1-D and 3-D velocity model of southwestern Ontario. For 1-D velocity tomography the method of Kissling (1984) (VELEST program) is applied. Different initial models are used to obtain a robust result. The Moho depth is constrained independently using results of receiver-function analysis and gravity inversion. . The ...
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Trees can absorb toxicants and mitigate air pollution. Morus alba L.(Mulberry) is a well-recognized tree species that has high ecological plasticity and endurance toward adverse environmental conditions. The structure of Morus alba L.... more
Trees can absorb toxicants and mitigate air pollution. Morus alba L.(Mulberry) is a well-recognized tree species that has high ecological plasticity and endurance toward adverse environmental conditions. The structure of Morus alba L. leaf blades has been investigated in order to reveal its remarkable resistance performance toward industrially contaminated environment. Field observations showed that laminas of Morus alba L. were in good state and well-developed, without significant decrease of leaf blade surfaces, and with no chlorosis and necrosis, till the end of vegetation period. Anatomical measurements registered greater leaf thickness of laminas from trees of polluted region. Under the industrial pollution the cuticle layer of adaxial surface increased, while from the abaxial side it decreased. In the adaxial surface epidermis have been detected idioblasts that perhaps strengthen the lamina surfaces and prevent from direct injury from air toxicants. The mesophyll structure of ...
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In this paper, an analysis of the potential use of the surface and geometric characteristics of mulberry leaves as parameters for environmental quality assessment is made. Methods have been used to reduce the amount of data of latent... more
In this paper, an analysis of the potential use of the surface and geometric characteristics of mulberry leaves as parameters for environmental quality assessment is made. Methods have been used to reduce the amount of data of latent variables, linear and kernel variants of principal components. It has been found that a kernel variant of the principal components, combined with nonlinear separating functions of discriminant analysis and a method of support vector machines, are an appropriate methods for distinguishing the degree of air pollution from the mulberry leaf data. The results obtained could be used as preliminary baseline data for future evaluations and studies related to remote monitoring of urban air quality.
The aim of this monitoring is to evaluate the nitrate content in vegetables and fruits from the commercial chain in Bulgaria. The vegetables were purchased from the food chains in June and July. The measurements of NO3- ions were carried... more
The aim of this monitoring is to evaluate the nitrate content in vegetables and fruits from the commercial chain in Bulgaria. The vegetables were purchased from the food chains in June and July. The measurements of NO3- ions were carried out with a Greentest appliance, Model ECO 5. Four samples from the conducted monitoring were with higher NO3- amount that is allowed for trade and accepted as healthy (potato, radish, and strawberries). The content of NO3- in fresh potato were 645 mg/kg at the accepted safety level 250 mg/kg. The level of nitrates also was higher in the both samples of radish 3700 mg/kg and 2934 mg/kg at accepted level as safety for consumption 1500 mg/kg. This small survey suggests that on the market in the country are still in the trade food products with not enough good quality.
The article presents the Flipped Classroom approach and its application at the Faculty of Techniques and Technologies (FTT) - Yambol, based on the training in the subjects "Programming and Use of Computers", "Food... more
The article presents the Flipped Classroom approach and its application at the Faculty of Techniques and Technologies (FTT) - Yambol, based on the training in the subjects "Programming and Use of Computers", "Food Contaminants", and "Object-Oriented Programming" in the 2016-2018 academic years. For the students, the problem is to filter some sources that are not reliable. In the new digital age, the lecturers expect them to be creative and to prepare their assignment using new approaches. When students follow their lecturers’ instructions concerning the literature and resources their projects tend to be more successful. This is one of the issues we encounter in preparing students for their classes. The second problem that we want to solve is the presentation of information using the "pouring in the bank" approach, where students are offered lectures and tutorials without being able actively to participate in the learning process. The students ...
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ABSTRACT The strengths and weaknesses of different online technologies and learning methods have been examined by combining the blended learning program with practical work on institutional e-learning projects. There are differences... more
ABSTRACT The strengths and weaknesses of different online technologies and learning methods have been examined by combining the blended learning program with practical work on institutional e-learning projects. There are differences between the traditional e-learning system and the new E-Learning 2.0 training. At present time, the new technologies provided by Web 2.0 better correspond to the needs of both students and teaching staff. The new Web 2.0 allows the “promoting of individual creativity”, together with the “use of collective intelligence”. A comparison of the two development stages of the e-learning tools has been completed and the advantages of E-Learning 2.0 are shown. The main components of Web 2.0 are provided and the use of wiki as an up-to-date collaboration tool for on-line teamwork is shown.
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Growth and development of the leaf blades of Acer tataricum in industrially contaminated environment Received: Abstract: During one vegetative season, the growth and the development of the leaf blades of Tatarian maple (Acer tataricum L.)... more
Growth and development of the leaf blades of Acer tataricum in industrially contaminated environment Received: Abstract: During one vegetative season, the growth and the development of the leaf blades of Tatarian maple (Acer tataricum L.) from heavily polluted area has been studied. The region under investigation was contami-nated mainly with SO 2 , N x O x , Pb, Zn, and Cu etc. The aim of the study was to compare the growth and the de-velopment of the leaf blades of Acer tataricum L. (Tatarian maple) from polluted field with those from non-pol-luted. Base on this to assess its tolerance to polluted conditions of the atmosphere, as well as to look for adap-tive responses. The conducted study registered shorter time of the vegetative growth of the leaf blades in the commencement stages of the vegetative development. The leaves from polluted site had emergence approxi-mately two weeks earlier compared with these from the control area. Faster linear growth of the leaf surfaces in the c...
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Leaf blades of Norway maple (Acer platanoides L.), growing in heavily polluted industrial area have been studied for anatomical changes developed under the influence of the industrial contamination (with SO 2 , N x O x , Pb, As). The aim... more
Leaf blades of Norway maple (Acer platanoides L.), growing in heavily polluted industrial area have been studied for anatomical changes developed under the influence of the industrial contamination (with SO 2 , N x O x , Pb, As). The aim of the examination was to reveal the dynamics in the development of leaf blades and to trace the impact of the contaminated air on the leaf structure of Norway maple. The conducted study registered acceleration of the vegetative growth of the leaf blades that is manifested through approximately two weeks earlier appearance of leaves on the tree, faster linear growth and strength-ened the xeromorphic traits in the leaf structure of the tree plants from the contaminated region. The ob-served changes are regarded as adaptation of the plant to the polluted environment, i.e. as tolerance.
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High quality of education is a main goal of any institution, formal or informal organization for education. The ability to improve quality of education by sharing audio, video, any combination of media, or lessons and in that way to... more
High quality of education is a main goal of any institution, formal or informal organization for education. The ability to improve quality of education by sharing audio, video, any combination of media, or lessons and in that way to expand the level of acquired knowledge is explored by many organizations and can be obtained using web-conferencing systems. Web-conferencing is a system that performs live meetings between participants from different locations over the Internet and in that way expand communication, sharing of knowledge and experience.
The strengths and weaknesses of different online technologies and learning methods have been examined by combining the blended learning program with practical work on institutional e-learning projects. There are differences between the... more
The strengths and weaknesses of different online technologies and learning methods have been examined by combining the blended learning program with practical work on institutional e-learning projects. There are differences between the traditional e-learning system and the new E-Learning 2.0 training. At present time, the new technologies provided by Web 2.0 better correspond to the needs of both students and teaching staff. The new Web 2.0 allows the “promoting of individual creativity”, together with the “use of collective intelligence”. A comparison of the two development stages of the e-learning tools has been completed and the advantages of E-Learning 2.0 are shown. The main components of Web 2.0 are provided and the use of wiki as an up-to-date collaboration tool for on-line teamwork is shown.
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The quality of education is a crucial aim. Technology impacts so many areas of modern life. There are streaming too many information from everywhere, plenty of information. Technology provides a bounty of tools for learning and in the... more
The quality of education is a crucial aim. Technology impacts so many areas of modern life. There are streaming too many information from everywhere, plenty of information. Technology provides a bounty of tools for learning and in the same way of cheating on a exam. The ability to improve quality of education is the main goal to any institution, formal or informal organization for education. In that article we will spoke about the methods that are often use for cheating on e-tests, how we try to prevent that way of practice and what is important teachers to do in order to reduce bad manner of cheating among students.
The leaf blades of white ash Fraxinus americana L. and London plane tree Platanus acerifolia Willd. growing in heavy polluted industrial areas were studied for morphological and anatomical changes developed under the influence of... more
The leaf blades of white ash Fraxinus americana L. and London plane tree Platanus acerifolia Willd. growing in heavy polluted industrial areas were studied for morphological and anatomical changes developed under the influence of industrial contamination. The aim of the investigation was to determine and compare the influences of air polluted with SO2, NxO x, Pb, As, Zn, Cu etc. on the morphology and the structure of the leaves of these deciduous trees. Both species are tolerant to environmental changes but with different environmental characteristics and tolerances and they are widely used for planting. Under polluted conditions, the trees strengthened the anatomic xeromorphic characteristics of their leaf structures, which gave them the opportunity to mitigate the stressful conditions of the environment. The observed responses are regarded as adaptive and compensative to the adverse effects of air pollution.
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Virtual learning becomes an important task for academic institutions. In Technical College of Yambol the virtual learning environment (VLE) has been created using Moodle software platform and has been introduced into the practice.... more
Virtual learning becomes an important task for academic institutions. In Technical College of Yambol the virtual learning environment (VLE) has been created using Moodle software platform and has been introduced into the practice. Multimedia courses have been created in different disciplines. Using interactive whiteboards and possibilities teachers to record their instruction and post the material for review by students at a later time is a good opportunity to overcome the main student's problems and reducing the rate of drop off as well as improving the quality of ODL-process by creating interactive ODL-modules. Key words: ODL process, virtual learning environment, interactive whiteboards. INTRODUCTION Analyzing the ODL process and its evolution over the last few years we can conclude that recently more attention has been paid to the pedagogical issues, trying to define how the use of technologies should be seen within a wider field of teaching experiences based on innovative m...
Leaf blade structure and the tolerance of Acer negundo L. (Box elder) to the polluted environment Abstract: Polluted air is a stress factor that contributes to the decline of urban trees. Air pollution may cause short-term (acute) damage,... more
Leaf blade structure and the tolerance of Acer negundo L. (Box elder) to the polluted environment Abstract: Polluted air is a stress factor that contributes to the decline of urban trees. Air pollution may cause short-term (acute) damage, which is immediately visible and long-term (chronic) damage, which can lead to gradual tree decline. Long-term damage may predispose trees to other disorders. The impact of technogenic factors on the leaf's anatomical structure of Acer negundo L. (Box elder) was studied. The thickness of the up-per cuticle is increased when compared to those from an ecologically pure area. A change in the rate of mesophyll tissue is due to the enlargement of the palisade parenchyma. The thickness of lower epidermal cells is decreased. All changes of the leaf blade structure are significant and are in direction of increasing the xero-phyte characteristics of the leaves. Box elder is native to much of temperate North America. This is a tree of low-lands and wet h...
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The purpose of the article is to represent the results of the development interactive courses of education in Microbiology based on virtual learning environment. The virtual learning environment has been created using Moodle software... more
The purpose of the article is to represent the results of the development interactive courses of education in Microbiology based on virtual learning environment. The virtual learning environment has been created using Moodle software platform and has been implemented in many different disciplines in Technical College of Yambol. The advantages of this way of education is the unlimited access of
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The genetic effects of simultaneous treatment of Arabidopsis seeds by the sodium lead and low doses of chronic irradiation was studied. It was found that the sodium lead is not strongly mutagen and has more toxic effect on biological... more
The genetic effects of simultaneous treatment of Arabidopsis seeds by the sodium lead and low doses of chronic irradiation was studied. It was found that the sodium lead is not strongly mutagen and has more toxic effect on biological systems. The high lead toxicity is a possible reason of synergetic effects of combined treatment with irradiation rays.
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The radioresistance of seeds of populations of Arabidopsis thaliana (L.) Heynh. growing for 5 years in the regions with different levels of radioactive contamination within 30 km zone of Chernobyl NPP was studied. The analysis of... more
The radioresistance of seeds of populations of Arabidopsis thaliana (L.) Heynh. growing for 5 years in the regions with different levels of radioactive contamination within 30 km zone of Chernobyl NPP was studied. The analysis of comparative radiosensitivity by root test was performed. It has been shown that plants from Arabidopsis population growing under chronic irradiation did not gain an increased radioresistance. The data obtained show that they are more radiosensitive.
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Annually during six years since 1986 dynamics of the mutation load in Arabidopsis populations was studied. Frequency of the embryonic lethal mutations was studied with Muller embryonic test. First two years after the accident an increase... more
Annually during six years since 1986 dynamics of the mutation load in Arabidopsis populations was studied. Frequency of the embryonic lethal mutations was studied with Muller embryonic test. First two years after the accident an increase of mutation load in Arabidopsis populations was observed at all levels of radioactive contamination. In the areas with contamination up to 10 mR/h the mutation load decreased to the control level by 1990. In the areas with contamination up to 130 mR/h the mutation load exceeds the control by 4-8 times.
Research Interests: Gamma Rays, Ukraine, Mutation, Power Plants, Arabidopsis, and 3 moreSeeds, Time Factors, and Beta Particles
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A virtual learning environment has been created using Moodle software platform and has been applied in Technical College of Yambol. Multimedia courses have been created as well. In our paper we give the assessments of the requirements for... more
A virtual learning environment has been created using Moodle software platform and has been applied in Technical College of Yambol. Multimedia courses have been created as well. In our paper we give the assessments of the requirements for the teachers regarding implementation of high quality open and distance learning process. Using interactive whiteboards and possibilities for the teachers to record their instruction and post the material on-line is a good opportunity for realizing ODL-process. The paper presents possibilities for using interactive whiteboards as an educational tool and their application into the practice. The experience and perspectives of their use in educational process at the Technical College of Yambol is shown.