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  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 374 journals)
Showing 201 - 265 of 265 Journals sorted alphabetically
Jurnal MIPA     Open Access  
Jurnal Natural     Open Access  
Jurnal Sains Dasar     Open Access  
Jurnal Teknosains     Open Access  
Jurnal Udayana Mengabdi     Open Access  
Karaelmas Science and Engineering Journal     Open Access  
Karbala International Journal of Modern Science     Open Access  
Kennedy Institute of Ethics Journal     Full-text available via subscription   (Followers: 10)
LOGIKA Jurnal Ilmiah Lemlit Unswagati Cirebon     Open Access  
Logo STI Science, Technology and Innovation     Open Access   (Followers: 15)
Makara Journal of Science     Open Access  
Malawi Journal of Science and Technology     Open Access   (Followers: 6)
Maskana     Open Access  
MethodsX     Open Access  
Metode & Forskningsdesign     Open Access  
Mètode Science Studies Journal : Annual Review     Open Access  
Middle East Journal of Science     Open Access  
Middle European Scientific Bulletin     Open Access   (Followers: 4)
Modern Applied Science     Open Access   (Followers: 1)
Momona Ethiopian Journal of Science     Open Access   (Followers: 5)
MUST : Journal of Mathematics Education, Science and Technology     Open Access   (Followers: 4)
Mutis     Open Access  
National Academy Science Letters     Hybrid Journal   (Followers: 3)
National Science Review     Hybrid Journal   (Followers: 1)
Natural Sciences     Open Access  
Natural Sciences Education     Hybrid Journal   (Followers: 1)
Naturen     Full-text available via subscription  
Nepal Journal of Science and Technology     Open Access  
Network Science     Hybrid Journal   (Followers: 4)
New Directions in the Teaching of Physical Sciences     Open Access   (Followers: 2)
Nordic Journal of Science and Technology     Open Access   (Followers: 2)
Nordic Studies in Science Education     Open Access   (Followers: 3)
Nova     Open Access  
Nuncius     Hybrid Journal   (Followers: 2)
OmniScience : A Multi-disciplinary Journal     Full-text available via subscription   (Followers: 1)
Open Conference Proceedings Journal     Open Access  
Open Journal of Applied Sciences     Open Access  
Orbis Cógnita : Revista Científica     Open Access   (Followers: 2)
Patterns     Open Access   (Followers: 9)
PENDIPA : Journal of Science Education     Open Access   (Followers: 1)
People and Nature     Open Access   (Followers: 4)
Población y Desarrollo - Argonautas y caminantes     Open Access  
Politique et Sociétés     Full-text available via subscription   (Followers: 1)
Portal de la Ciencia     Open Access  
Proceedings of the Indian National Science Academy     Full-text available via subscription   (Followers: 5)
Proceedings of the Linnean Society of New South Wales     Full-text available via subscription   (Followers: 2)
Proceedings of the Royal Society of Queensland, The     Full-text available via subscription  
QScience Connect     Open Access  
Quantum Science and Technology     Hybrid Journal   (Followers: 17)
RAC: Revista Angolana de Ciências     Open Access   (Followers: 7)
Rafidain Journal of Science     Open Access  
Rehabilitation Research, Policy, and Education     Hybrid Journal   (Followers: 2)
Rekayasa     Open Access   (Followers: 2)
Reportes Científicos de la FaCEN     Open Access  
Reports in Advances of Physical Sciences     Open Access  
Research     Open Access   (Followers: 6)
Research Ideas and Outcomes     Open Access  
Research Integrity and Peer Review     Open Access  
Research Policy : X     Open Access   (Followers: 3)
Respuestas     Open Access  
Reviews in Theoretical Science     Full-text available via subscription  
Revista Bases de la Ciencia     Open Access  
Revista Binacional Brasil - Argentina: Diálogo entre as ciências     Open Access  
Revista Brasileira de Iniciação Científica     Open Access  
Revista Catarinense da Ciência Contábil     Open Access  
Revista Ciencia y Tecnología     Open Access  
Revista Ciência, Tecnologia & Ambiente     Open Access  
Revista Científica de la FAREM     Open Access  
Revista Científica de la Universidad Nacional del Este     Open Access   (Followers: 2)
Revista Cientifica Guillermo de Ockham     Open Access  
Revista Científica y Tecnológica UPSE     Open Access  
Revista Conhecimento Online     Open Access  
Revista Crítica de Ciências Sociais     Open Access  
Revista de Ciencia y Tecnología     Open Access  
Revista de Información Científica     Open Access  
Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales     Open Access  
Revista de la Sociedad Científica del Paraguay     Open Access   (Followers: 7)
Revista de la Universidad del Zulia     Open Access  
Revista Eletrônica Ludus Scientiae     Open Access  
Revista Logos Ciencia & Tecnología     Open Access  
Revista MundoFesc     Open Access  
Revista Politécnica     Open Access  
Revista Saber Digital     Open Access   (Followers: 3)
Revista Sociedad y Economía     Open Access  
Revista Tecnológica     Open Access  
Revista Theoria     Open Access   (Followers: 1)
Revista UNIMAR     Open Access  
Revista UniVap     Open Access  
Revista Vivências em Ensino de Ciências     Open Access   (Followers: 1)
Rihan Journal for Scientific Publishing     Open Access   (Followers: 1)
Royal Society Open Science     Open Access   (Followers: 7)
Ruhuna Journal of Science     Open Access  
Sainstek : Jurnal Sains dan Teknologi     Open Access  
SAINSTIS     Open Access  
Sainteknol : Jurnal Sains dan Teknologi     Open Access  
Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi     Open Access  
Scholedge International Journal of Multidisciplinary & Allied Studies     Open Access  
Sci     Open Access  
Science     Full-text available via subscription   (Followers: 4961)
Science & Diplomacy     Free   (Followers: 3)
Science & Technology Studies     Open Access   (Followers: 4)
Science Advances     Free   (Followers: 43)
Science and Technology     Open Access   (Followers: 2)
Science Diliman     Open Access  
Science Heritage Journal     Open Access  
Science World Journal     Open Access  
Science, Technology and Arts Research Journal     Open Access   (Followers: 1)
ScienceRise     Open Access  
Sciences du jeu     Open Access  
Sciential     Open Access  
Scientific African     Open Access  
Scientific American     Full-text available via subscription   (Followers: 497)
Scientific American Mind     Full-text available via subscription   (Followers: 10)
Scientific Bulletin     Open Access   (Followers: 1)
Scientific Data     Open Access   (Followers: 7)
Scientific Journal of Mehmet Akif Ersoy University     Open Access  
Scientific Journal of Pure and Applied Sciences     Open Access   (Followers: 1)
Scientific Reports     Open Access   (Followers: 82)
Scientific World     Open Access  
Scientonomy : Journal for the Science of Science     Open Access   (Followers: 1)
Scienze Regionali : Italian Journal of Regional Science     Full-text available via subscription   (Followers: 18)
Selforganizology     Open Access  
Seminário de Iniciação Científica e Seminário Integrado de Ensino, Pesquisa e Extensão     Open Access  
Simbiótica     Open Access  
SINET : Ethiopian Journal of Science     Open Access   (Followers: 5)
Smart Science     Open Access  
South African Journal of Science     Open Access   (Followers: 2)
South American Sciences     Open Access   (Followers: 1)
South East European University Review (SEEU Review)     Open Access   (Followers: 3)
Springer Science Reviews     Hybrid Journal   (Followers: 2)
Studies in Science Education     Hybrid Journal   (Followers: 18)
Sultan Qaboos University Journal for Science     Open Access  
Tanzania Journal of Science     Open Access   (Followers: 4)
TD : The Journal for Transdisciplinary Research in Southern Africa     Open Access  
Technologies     Open Access   (Followers: 1)
TECNOSCIENZA: Italian Journal of Science & Technology Studies     Open Access   (Followers: 2)
Temas y Debates     Open Access  
The Innovation     Open Access   (Followers: 6)
The Scientific World Journal     Open Access  
The Social Studies     Hybrid Journal   (Followers: 3)
The Winnower     Open Access  
Theoria     Open Access   (Followers: 3)
THEORIA : An International Journal for Theory, History and Foundations of Science     Full-text available via subscription   (Followers: 1)
Transactions of Tianjin University     Full-text available via subscription  
Trilogía     Open Access  
TÜBAV Bilim Dergisi     Open Access  
Türk Bilim ve Mühendislik Dergisi     Open Access  
Tydskrif vir Geesteswetenskappe     Open Access  
Uluslararası Bilimsel Araştırmalar Dergisi (IBAD)     Open Access   (Followers: 1)
UNED Research Journal / Cuadernos de Investigación UNED     Open Access   (Followers: 1)
Uni-pluriversidad     Open Access  
Uniciencia     Open Access  
Universidad, Ciencia y Tecnología     Open Access  
Universitas (León)     Open Access  
Universitas Scientiarum     Open Access  
Unnes Science Education Journal     Open Access  
Vilnius University Proceedings     Open Access  
Walailak Journal of Science and Technology     Open Access  
WikiJournal of Science     Open Access  
World Scientific Research     Open Access  
Zeitschrift für Didaktik der Naturwissenschaften     Hybrid Journal  
Образование и наука     Open Access   (Followers: 1)
Східно-Європейський журнал передових технологій : Eastern-European Journal of Enterprise Technologies     Open Access   (Followers: 3)

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Acta Scientifica Naturalis
Number of Followers: 4  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2603-347X - ISSN (Online) 2367-5144
Published by Sciendo Homepage  [389 journals]
  • Natural tourist resources in the Stara planina tourist region (Bulgaria)

    • Abstract: The Stara planina tourist region is one of the most attractive regions for tourism in Bulgaria and one of the few that have almost year-round tourist activities. The outline of the area includes the mountain of the same name, but also the Pre-Balkan. This fact predetermines the exceptional richness and diversity of natural tourist resources. Here are some of the largest broad-leaved forests in the country, waterfalls, bizarre rock formations, etc. The relatively well-preserved natural environment is a prerequisite for the presence of exceptional biodiversity, as well as a significant number of protected areas. The region is specialized mainly in mountain tourism, including recreation, mountain trekking, rural and ecotourism. Due to the scarce tourist infrastructure, ski tourism still lags behind in its development compared to other mountain regions in the country. Very often, the Stara planina Region is primarily identified with its cultural and historical heritage, while its natural features remain in the background. Regardless of this, and as a result of the more intense tourist load, the problem of protecting natural tourist resources from the growing anthropogenic pressure is gaining special relevance. There is also an urgent need to identify and evaluate the prospects for sustainable development of the tourism industry in the region.The purpose of the present study is to valorize the natural tourist resources of the Stara planina tourist region and to provide guidelines for their sustainable use.
      PubDate: Fri, 15 Dec 2023 00:00:00 GMT
       
  • (Raf.) Raf. (Cactaceae) in the Bulgarian flora

    • Abstract: Opuntia humifusa (Raf.) Raf. is included in the List of Top 10 of the worst invasive alien plant species in Bulgaria. This is the fastest spreading species of the four species of the Opuntia genus found so far in natural habitats in Bulgaria. In the period 2010-2023, 3 new localities of the species were established in 3 new floristic regions of Bulgaria: Black Sea Coast (North), Stara Planina (East) and Strandzha Mountain. They describe the northernmost and easternmost distribution limits of the species in Bulgaria. The described localities are different in area: from 0.08 ha to 21.11 ha. The characteristics of the abiotic environment are presented such as: slope, exposure, elevation, bedrock, soil, climatic region and subregion. The habitats in which individuals of the species are found are indicated. Accompanying plant species were studied. The spatial structure of O. humifusa populations was studied. The reasons for the appearance and spread of this invasive alien plant species in territories that have not been inhabited by it until now have been examined, considering that these reasons are not natural, but have an anthropogenic character. Our findings support the opinions of other researchers about the key role of nature lovers in the spread of this invasive species. Factors favoring the increase in population size in established localities are indicated. Methods have been proposed to control the spread of the species.
      PubDate: Fri, 15 Dec 2023 00:00:00 GMT
       
  • Enhancing efficiency in scientific writing in the field of plant growing:
           Collaborating with AI assistant ChatGPT for enhanced productivity

    • Abstract: Every scientist at the beginning of his professional career inevitably encounters difficulties in developing scientific publications. These obstacles are often related with the preparation of the introductory section, which relies on existing research and from the mastery of various statistical approaches, understanding results and their interpretation. The aim of this study is to assess to what extent ChatGPT can streamline the process of writing scientific publications in the field of plant breeding and how it can be beneficial as an auxiliary tool. ChatGPT cannot entirely write the introductory section for you, but it can generate adequate ideas and fundamental aspects that the author can utilize and further develop for the elaboration of this part. ChatGPT can perform basic statistical analyses commonly used in such studies, which adequately align with the developments implemented in other statistical software.
      PubDate: Fri, 15 Dec 2023 00:00:00 GMT
       
  • The ability to form environmental competence throughout Waste management

    • Abstract: Environmental competence is a category related to environmental awareness, environmental culture, environmental ethics and environmental behaviour and is a key competence. An efficient way to build a public awareness of environmental responsibility is to separate waste, a concept that is now widespread across Europe. Project work is an integrative strategy that provides opportunities for cooperation and interaction between students in the team organization of cognitive activity, realizing the connection between theoretical knowledge and practical activity of students, for conducting active training of students and effective socialization of the training, thus increasing the practical focus of the acquired knowledge and competences.The article presents results following the application of the project method as an opportunity to increase the environmental competence of junior high school students, with regards to sustainable waste management at school and in their households.
      PubDate: Fri, 15 Dec 2023 00:00:00 GMT
       
  • Anticancer activity of Velen. methanol extracts

    • Abstract: Current studies are focused on medicinal plants secondary metabolites as a source of new anticancer agents. The aim of this study was to evaluate in vitro influence of methanolic extracts of Achillea thracica Velen. from natural habitat, in vitro propagated and ex vitro established plants on tumor cells proliferation/viability. All extract tested (50 µg/ml for 24 hours) significantly inhibited SK-HEP-1 cell line proliferation/viability (Р ≤ 0.05). The inhibitory effect of ex vitro established plants was slightly weaker in comparison with A. thracica grown in its natural habitat. So, ex situ conservation of A. thracica enables an opportunity to explore its valuable phytochemicals.
      PubDate: Fri, 15 Dec 2023 00:00:00 GMT
       
  • Editorial Note: Rhodopes Mountains - a fairy tale in green – Part
           III (Western Rhodopes)

    • PubDate: Fri, 15 Dec 2023 00:00:00 GMT
       
  • Gastroprotective effect of the flavonoid fustin isolated from heartwood in
           a rat model of indomethacin-induced gastric ulceration

    • Abstract: Gastric ulcer is a common health issue. Cotinus coggygria heartwood extracts rich in the flavonoids fustin and sulfuretin have shown protective effects in a rat model of indomethacin-induced gastric ulceration. Fustin itself has been protective in a rat model of ethanol-induced gastric ulcer. In the present study we aimed to reveal the effect of the flavonoid fustin isolated from Cotinus coggygria heartwood in a rat model of indomethacin-induced gastric ulceration.Fustin was isolated from Cotinus coggygria heartwood and purified. The experiment was performed on 30 male Wistar rats allocated to three groups – Control, Indo and F10. F10 group was pretreated with fustin (10 mg/kg b.w. for 7 days). Rats were sacrificed and macroscopic, histopathological and immunohistochemical investigations of the stomachs were performed.Indomethacin caused severe mucosal damage, proven by the macroscopic, microscopic and immunohistochemical gastric mucosa investigation. Fustin pretreatment slightly reduced the macroscopic indices for gastric damage (ulcer number, area, score and index), and significantly alleviated the severity of the microscopic indices (mucosal erosions, necrosis, hemorrhages and inflammation). In fustin-pretreated rats, the expression of NF-κB was reduced in comparison with indomethacin-treated animals.In conclusion, fustin exerted a gastroprotective action in an indomethacin-induced gastric ulceration model, probably due to its anti-inflammatory activity.
      PubDate: Sat, 22 Jul 2023 00:00:00 GMT
       
  • Education for sustainable development - analysis and findings

    • Abstract: Education is defined as a major tool for raising awareness of the principles and functions of sustainable development. The problem of sustainable development, environmental and health education is subject to standards defining both content parameters in subject areas, overlapping integral fields, and options for implementation in pedagogical practice. The article presents an analysis of the problem of climate and energy efficiency, which is present only implicitly within the State educational standard for general education and curricula within the framework of the key competence common to all subjects - skills to support sustainable development and healthy lifestyle and sport.
      PubDate: Sat, 22 Jul 2023 00:00:00 GMT
       
  • Traditional Knowledge of Medicinal Plants in Relation to Local Customs and
           Practices of the North Black Sea Coast Population

    • Abstract: This comprehensive ethnobotanical study was conducted along the North Black Sea coast area to find of the extent to which indigenous knowledge of medicinal plants and their relation to Bulgarian traditions and customs is preserved. We aim to identify the tendencies of passing this knowledge to future generations.The survey was conducted in 2015 in various urban and rural North Black Sea coast areas, using a face-to-face interviews technique. We used the Chi-square test to analyse the results. Pearson correlation coefficient was used for the assessment of the impact of demographics on respondents' answers.More than half of the respondents (61.08%) are not familiar with rituals and traditional practices related to medicinal plants. Moderate influence on respondents' answers is rendered by age only. For the local population of the North Black Sea coast, Enyovden turns out to be the most popular holiday related to medicinal plants. Enyovden is the herbalists' feast and is cited by 20% of respondents. The same percentage of interviewees mention Geranium spp. and Ocimum basilicum L. as the most favoured herbs related to local traditions and customs.Traditional knowledge of the relation between Bulgarian rituals and customs to medicinal plants and their magical powers is fading.
      PubDate: Sat, 22 Jul 2023 00:00:00 GMT
       
  • Teaching methods based on constructivism in environmental education

    • Abstract: The traditional educational paradigm is increasingly giving way to active learning and the various possibilities for its application, which methodological basis is constructivism. They are all part of integrative learning, expressed in the creation of sustainable interdisciplinary connections. Constructivism is associated with key competencies for lifelong learning, necessary for ensuring a sustainable and adaptable to changes educational environment. This in turn requires a change in the teaching model and the application of technologies and approaches adjusted to these changes in the learning process. Part of these methods, that are successfully applied in problem-based, ecological education is project-based, and cooperative learning.
      PubDate: Sat, 22 Jul 2023 00:00:00 GMT
       
  • Chemical composition and biologic activities of different preparations of
           Japanese quince ()

    • Abstract: The hectic pace of life and growing threat of cardiovascular, metabolic and neoplastic diseases highlight the demand for products with natural origin that could simultaneously be part of the balanced diet and improve human’s health. A promising finding in this respect is the Japanese quince – Chaenomeles japonica. It is an ancient plant with eastern origin, but the scientific knowledge about it has only recently started to build up.The aim of this review is to gather scientific data about chemical composition and biologic activities of Chaenomeles japonica and to provide an insight into the possible prophylactic and therapeutic applications of the plant. The gathered and summarized information concerning Japanese quince shows that preparations of different parts of the plant, especially fruits and leaves, possess biologic properties that could be of exceptional nutritional and medicinal value. Antiinflammatory, antiproliferative, antimicrobial, carbohydrate metabolism-modulating activities in in vitro studies as well as safety profile, influence on neuropsychology and behavior in animal models are discussed.This review outlines the prophylactic and therapeutic effects of Chaenomeles japonica, as well as the chemical composition that stands behind them, and aims to serve as a basis for further investigations of the medicinal plant’s potential.
      PubDate: Sat, 22 Jul 2023 00:00:00 GMT
       
  • Editorial Note: Rhodopes Mountains - a fairy tale in green – Part II
           (Central Rhodopes)

    • PubDate: Sat, 22 Jul 2023 00:00:00 GMT
       
  • Natural Resources. Cycle of substances in nature. Implementation of
           ecological education and formation of ecological culture in the studies of
           “Man and Nature” and “Chemistry and Environmental Protection”

    • Abstract: Throughout a long historical period, the natural resources of the world have been managed by different human communities. Living within the boundaries of their own ecosystems forces people to develop a deep knowledge of managing their natural resources. Whether they and their children will survive directly depends on their behavior. People have given the land and natural resources a social and symbolic value that goes beyond their immediate use value. This symbolism is based on ecological principles and supports a system of ethical, social and economic rules that are adaptive. This means that these principles and rules help human communities prevent the overexploitation of natural resources, preserve their connections with the surrounding ecosystems, so that people can live within the limits imposed by the availability of resources and technology.Over the course of the last few generations, however, the world's diversity of cultures, along with their adaptations to local environmental conditions, has been rapidly disintegrating under the influence of a new, global culture characterized by extremely high levels of consumption. Economic growth based on fossil fuel energy led to the rapid development of industry and international trade, and improved lifestyles as well as advances in health care led to rapid growth in human population and consumption. As a consequence, the search for new ways of extracting resources, involving powerful machines and efficient technologies, which absorb the traditions of conservation of nature built by local human communities during their long historical experience of survival, is intensified.Mechanisms developed as adaptations to the environment over hundreds of years are rapidly breaking down as a result of globalization, thereby freeing humans from their traditional environmental constraints.
      PubDate: Sat, 22 Jul 2023 00:00:00 GMT
       
  • Hydrogeochemical characterization of the areas of exploitation of the CBG
           sites: cas of the plateaus of N'Dangara and Boundou Wandé,
           Sous-préfecture de Sangarédi, Prefecture of Boké, Republic of Guinea

    • Abstract: This work aims to analyze the quality of groundwater in the riparian areas of the bauxitic plateaus of N'Dangara and Boundou Wandé in operation by the CBG (Compagnie des Bauxites de Guinée). The geology of the study area consists mainly of sedimentary formations of the Devonian faro, Neogene and Quaternary. Three water measurement and sampling campaigns on the two plateaus were carried out with determination of piezometric measurements and physic-chemical parameters. This study showed that the general flow direction of groundwater is dispersed. The flows at Boundou Wandé are from the center of the plateau to the north and that at N'Dangara is from the center to the south and southwest. It can be seen that the direction of groundwater flow reflects overall the relief of the deposit conditioned by its geomorphological framework. It emerges from the analysis of physical and chemical parameters that well water is consumable. However, the water from wells MW15, MW16, MW17, MW18 and MW21 with a low pH (4.84 to 5.13) may present a certain nuisance for its consumption and because it can be corrosive. Analysis of the Piper diagram showed two hydrogeochemical facies (calcium and magnesium bicarbonate facies and sodium and potassium carbonate facies). However, this study strongly suggests continuous monitoring of groundwater in and around the study area in order to meet the demand for water supply to communities without compromising the ability of future generations to meet water quality requirements.
      PubDate: Sat, 22 Jul 2023 00:00:00 GMT
       
  • Survey on current status of folk medicine in Bulgaria reported by local
           knowledgeable persons

    • Abstract: Traditional knowledge is of real danger to be lost in modern society. This research is a part of an ethnobotanical survey aimed on documentation of current status of folk medicine in Central and Northeastern Bulgaria. Semi-structured interviews with local knowledgeable persons were provided. Quantitative ethnobotanical indices consisting of Fidelity level (FL) and Informant consensus factor (ICF) were calculated as indicatives of local importance of species and prevalent uses of species. The respondents reported 15 category uses: to treat 12 health disorders, for prophylaxis/immune stimulation, other health connected conditions and plants included in the diet as food/spices. The highest number of plants was used for the treatment of gastrointestinal diseases (65.9%), cardiovascular problems (53.4%) and urinary system problems (46.6%). It should be noted that many herbal medicines are related to disease prevention (52.3%). Maximum FL value (100%) of Hypericum perforatum for digestive and nervous system disorders and Thymus sp. for respiratory system diseases was calculated. Numerous species and specific applications were listed in the paper, contributing to the base ethnobotanical data. Specific use categories indicate most spread health disorders and proved treatments in the studied regions. Results also reflect the growing interest in disease prevention (immune stimulation) and a healthy diet.
      PubDate: Tue, 01 Nov 2022 00:00:00 GMT
       
  • Duration of fungicide activity against wheat powdery mildew

    • Abstract: The most commonly used method to control wheat powdery mildew is by fungicides. The aim of the present study is to determine the duration of the fungicide activity of three fungicides: azoxystrobin; triadimenol; tebuconazole+spiroxamine+triadimenol. They were applied in three concentrations in phenophase 3-4 leaf of susceptible wheat variety. After treatment, each day one pot of the tested fungicide concentrations was inoculated with Blumeria graminis f. sp. tritici. When using azoxystrobin at concentrations of 0.2%, 0.4%, 0.8%, symptoms of powdery mildew appeared on plants inoculated with Blumeria graminis f.sp. tritici in the next day after treatment. When using triadimenol, first symptoms appeared in plants inoculated with the pathogen on the next day after applying a concentration 0.12%, on the second day after applying a concentration 0.25% and on the third day after treatment with a concentration 0.5%. With tebuconazole+spiroxamine+triadimenol, first postules appeared on plants inoculated with Blumeria graminis f. sp. tritici on the third day after treatment with a concentration 0.15%, on the 13th day after treatment with a concentration 0.3% and on the 14th day after treatment with a concentration 0.6%. This fungicide at a concentration of 0.6% (13 days) and 0.3% (12 days) has the longest duration of fungicide activity.
      PubDate: Tue, 01 Nov 2022 00:00:00 GMT
       
  • For optical flickering in symbiotic star MWC 560

    • Abstract: This study is based on observations of MWC560 during the last two observational seasons (2020/2021 and 2021/2022). Other than looking for flickering we were interested in following the variability of brightness in the same period. Looking for similarities in the spectra with other types of stars is also of great interest to us because it could help clarify the stellar configuration of such objects. Our observations during the last two observational seasons of MWC560 confirm the absence of flickering. From the similarities of the gathered spectra of XX Oph and MWC560 we assume that the components in XX Oph are a red giant and a white dwarf, which are also surrounded by a common shell.
      PubDate: Tue, 01 Nov 2022 00:00:00 GMT
       
  • Comparative analysis of the myriapod fauna (Diplopoda, Chilopoda) of the
           Shumen Plateau and the Madara Plateau (Northeastern Bulgaria)

    • Abstract: At present, the inventory lists of the Myriapoda of many geographical areas in Bulgaria and the comparative analyzes of the similarity between such local faunas are scarce or completely missing. The present paper presents the results of the comparative analysis of α- and β-diversity of the myriapoda communities in natural habitats in two regions in Northeastern Bulgaria – the Shumen Plateau and the Madara Plateau. The compared habitats in these plateaus have similar geographical, soil and climatic conditions, and similar species composition of plant formations. The analysis of the structure of the myriapoda communities included estimation of species diversity by determining the Shannon-Wiever index (H’) and the Berger-Parker index (d). The degree of similarity between the species composition of the communities was analyzed by the Czekanowski-Dice-Sörensen, Jaccard, Bray-Curtis, Horn, Morisita-Horn indices and the corrected Chao-Sörensen and Chao-Jaccard indices. The species diversity of the millipede community in the Shumen Plateau is much greater than that of the Madara Plateau, while the diversity of the centipede communities in the two plateaus does not differ significantly. In both classes the greatest species diversity is registered in deciduous and mixed deciduous-coniferous forests. Chao-Sörensen and Chao-Jaccard indices of similarity for the myriapod communities in these habitats are the highest, approaching 1, in contrast to the other sites where the registered species composition of the centipedes is smaller and the degree of similarity is about 0.6.
      PubDate: Tue, 01 Nov 2022 00:00:00 GMT
       
  • Interaction of the birch-bark terpenoids with human and bovine serum
           albumins

    • Abstract: Interactions between pentacyclic triterpenes isolated from white birch (Betula pendula Roth.) bark samples from Northeast Bulgaria and bovine serum albumin or human serum albumin were investigated using fluorescence techniques. The experimental results show the formation of complexes between the isolated triterpenes with serum albumins. Quenching of the intrinsic fluorescence of human serum albumins was monitored by emission spectra of varied quencher concentration solutions. By analysing the fluorescence spectra and fluorescence intensity, some parameters of the serum albumins - quencher interaction were determined to evaluate the type of quenching. An extract containing the isolated triterpenes formed complexes with both bovine serum albumin and human serum albumin, leading to quenching the fluorescence of both albumins by a combined quenching mechanism.
      PubDate: Tue, 01 Nov 2022 00:00:00 GMT
       
  • Editorial Note: The Botanical Garden in Balchik – harmonious coexistence
           between Man and Nature

    • PubDate: Tue, 01 Nov 2022 00:00:00 GMT
       
 
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  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 374 journals)
Showing 201 - 265 of 265 Journals sorted alphabetically
Jurnal MIPA     Open Access  
Jurnal Natural     Open Access  
Jurnal Sains Dasar     Open Access  
Jurnal Teknosains     Open Access  
Jurnal Udayana Mengabdi     Open Access  
Karaelmas Science and Engineering Journal     Open Access  
Karbala International Journal of Modern Science     Open Access  
Kennedy Institute of Ethics Journal     Full-text available via subscription   (Followers: 10)
LOGIKA Jurnal Ilmiah Lemlit Unswagati Cirebon     Open Access  
Logo STI Science, Technology and Innovation     Open Access   (Followers: 15)
Makara Journal of Science     Open Access  
Malawi Journal of Science and Technology     Open Access   (Followers: 6)
Maskana     Open Access  
MethodsX     Open Access  
Metode & Forskningsdesign     Open Access  
Mètode Science Studies Journal : Annual Review     Open Access  
Middle East Journal of Science     Open Access  
Middle European Scientific Bulletin     Open Access   (Followers: 4)
Modern Applied Science     Open Access   (Followers: 1)
Momona Ethiopian Journal of Science     Open Access   (Followers: 5)
MUST : Journal of Mathematics Education, Science and Technology     Open Access   (Followers: 4)
Mutis     Open Access  
National Academy Science Letters     Hybrid Journal   (Followers: 3)
National Science Review     Hybrid Journal   (Followers: 1)
Natural Sciences     Open Access  
Natural Sciences Education     Hybrid Journal   (Followers: 1)
Naturen     Full-text available via subscription  
Nepal Journal of Science and Technology     Open Access  
Network Science     Hybrid Journal   (Followers: 4)
New Directions in the Teaching of Physical Sciences     Open Access   (Followers: 2)
Nordic Journal of Science and Technology     Open Access   (Followers: 2)
Nordic Studies in Science Education     Open Access   (Followers: 3)
Nova     Open Access  
Nuncius     Hybrid Journal   (Followers: 2)
OmniScience : A Multi-disciplinary Journal     Full-text available via subscription   (Followers: 1)
Open Conference Proceedings Journal     Open Access  
Open Journal of Applied Sciences     Open Access  
Orbis Cógnita : Revista Científica     Open Access   (Followers: 2)
Patterns     Open Access   (Followers: 9)
PENDIPA : Journal of Science Education     Open Access   (Followers: 1)
People and Nature     Open Access   (Followers: 4)
Población y Desarrollo - Argonautas y caminantes     Open Access  
Politique et Sociétés     Full-text available via subscription   (Followers: 1)
Portal de la Ciencia     Open Access  
Proceedings of the Indian National Science Academy     Full-text available via subscription   (Followers: 5)
Proceedings of the Linnean Society of New South Wales     Full-text available via subscription   (Followers: 2)
Proceedings of the Royal Society of Queensland, The     Full-text available via subscription  
QScience Connect     Open Access  
Quantum Science and Technology     Hybrid Journal   (Followers: 17)
RAC: Revista Angolana de Ciências     Open Access   (Followers: 7)
Rafidain Journal of Science     Open Access  
Rehabilitation Research, Policy, and Education     Hybrid Journal   (Followers: 2)
Rekayasa     Open Access   (Followers: 2)
Reportes Científicos de la FaCEN     Open Access  
Reports in Advances of Physical Sciences     Open Access  
Research     Open Access   (Followers: 6)
Research Ideas and Outcomes     Open Access  
Research Integrity and Peer Review     Open Access  
Research Policy : X     Open Access   (Followers: 3)
Respuestas     Open Access  
Reviews in Theoretical Science     Full-text available via subscription  
Revista Bases de la Ciencia     Open Access  
Revista Binacional Brasil - Argentina: Diálogo entre as ciências     Open Access  
Revista Brasileira de Iniciação Científica     Open Access  
Revista Catarinense da Ciência Contábil     Open Access  
Revista Ciencia y Tecnología     Open Access  
Revista Ciência, Tecnologia & Ambiente     Open Access  
Revista Científica de la FAREM     Open Access  
Revista Científica de la Universidad Nacional del Este     Open Access   (Followers: 2)
Revista Cientifica Guillermo de Ockham     Open Access  
Revista Científica y Tecnológica UPSE     Open Access  
Revista Conhecimento Online     Open Access  
Revista Crítica de Ciências Sociais     Open Access  
Revista de Ciencia y Tecnología     Open Access  
Revista de Información Científica     Open Access  
Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales     Open Access  
Revista de la Sociedad Científica del Paraguay     Open Access   (Followers: 7)
Revista de la Universidad del Zulia     Open Access  
Revista Eletrônica Ludus Scientiae     Open Access  
Revista Logos Ciencia & Tecnología     Open Access  
Revista MundoFesc     Open Access  
Revista Politécnica     Open Access  
Revista Saber Digital     Open Access   (Followers: 3)
Revista Sociedad y Economía     Open Access  
Revista Tecnológica     Open Access  
Revista Theoria     Open Access   (Followers: 1)
Revista UNIMAR     Open Access  
Revista UniVap     Open Access  
Revista Vivências em Ensino de Ciências     Open Access   (Followers: 1)
Rihan Journal for Scientific Publishing     Open Access   (Followers: 1)
Royal Society Open Science     Open Access   (Followers: 7)
Ruhuna Journal of Science     Open Access  
Sainstek : Jurnal Sains dan Teknologi     Open Access  
SAINSTIS     Open Access  
Sainteknol : Jurnal Sains dan Teknologi     Open Access  
Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi     Open Access  
Scholedge International Journal of Multidisciplinary & Allied Studies     Open Access  
Sci     Open Access  
Science     Full-text available via subscription   (Followers: 4961)
Science & Diplomacy     Free   (Followers: 3)
Science & Technology Studies     Open Access   (Followers: 4)
Science Advances     Free   (Followers: 43)
Science and Technology     Open Access   (Followers: 2)
Science Diliman     Open Access  
Science Heritage Journal     Open Access  
Science World Journal     Open Access  
Science, Technology and Arts Research Journal     Open Access   (Followers: 1)
ScienceRise     Open Access  
Sciences du jeu     Open Access  
Sciential     Open Access  
Scientific African     Open Access  
Scientific American     Full-text available via subscription   (Followers: 497)
Scientific American Mind     Full-text available via subscription   (Followers: 10)
Scientific Bulletin     Open Access   (Followers: 1)
Scientific Data     Open Access   (Followers: 7)
Scientific Journal of Mehmet Akif Ersoy University     Open Access  
Scientific Journal of Pure and Applied Sciences     Open Access   (Followers: 1)
Scientific Reports     Open Access   (Followers: 82)
Scientific World     Open Access  
Scientonomy : Journal for the Science of Science     Open Access   (Followers: 1)
Scienze Regionali : Italian Journal of Regional Science     Full-text available via subscription   (Followers: 18)
Selforganizology     Open Access  
Seminário de Iniciação Científica e Seminário Integrado de Ensino, Pesquisa e Extensão     Open Access  
Simbiótica     Open Access  
SINET : Ethiopian Journal of Science     Open Access   (Followers: 5)
Smart Science     Open Access  
South African Journal of Science     Open Access   (Followers: 2)
South American Sciences     Open Access   (Followers: 1)
South East European University Review (SEEU Review)     Open Access   (Followers: 3)
Springer Science Reviews     Hybrid Journal   (Followers: 2)
Studies in Science Education     Hybrid Journal   (Followers: 18)
Sultan Qaboos University Journal for Science     Open Access  
Tanzania Journal of Science     Open Access   (Followers: 4)
TD : The Journal for Transdisciplinary Research in Southern Africa     Open Access  
Technologies     Open Access   (Followers: 1)
TECNOSCIENZA: Italian Journal of Science & Technology Studies     Open Access   (Followers: 2)
Temas y Debates     Open Access  
The Innovation     Open Access   (Followers: 6)
The Scientific World Journal     Open Access  
The Social Studies     Hybrid Journal   (Followers: 3)
The Winnower     Open Access  
Theoria     Open Access   (Followers: 3)
THEORIA : An International Journal for Theory, History and Foundations of Science     Full-text available via subscription   (Followers: 1)
Transactions of Tianjin University     Full-text available via subscription  
Trilogía     Open Access  
TÜBAV Bilim Dergisi     Open Access  
Türk Bilim ve Mühendislik Dergisi     Open Access  
Tydskrif vir Geesteswetenskappe     Open Access  
Uluslararası Bilimsel Araştırmalar Dergisi (IBAD)     Open Access   (Followers: 1)
UNED Research Journal / Cuadernos de Investigación UNED     Open Access   (Followers: 1)
Uni-pluriversidad     Open Access  
Uniciencia     Open Access  
Universidad, Ciencia y Tecnología     Open Access  
Universitas (León)     Open Access  
Universitas Scientiarum     Open Access  
Unnes Science Education Journal     Open Access  
Vilnius University Proceedings     Open Access  
Walailak Journal of Science and Technology     Open Access  
WikiJournal of Science     Open Access  
World Scientific Research     Open Access  
Zeitschrift für Didaktik der Naturwissenschaften     Hybrid Journal  
Образование и наука     Open Access   (Followers: 1)
Східно-Європейський журнал передових технологій : Eastern-European Journal of Enterprise Technologies     Open Access   (Followers: 3)

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