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  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 426 journals)
Showing 1 - 200 of 265 Journals sorted alphabetically
AAS Open Research     Open Access   (Followers: 1)
ABC Journal of Advanced Research     Open Access  
Accountability in Research: Policies and Quality Assurance     Hybrid Journal   (Followers: 22)
Acta Materialia Transilvanica     Open Access  
Acta Nova     Open Access   (Followers: 1)
Acta Scientifica Malaysia     Open Access  
Acta Scientifica Naturalis     Open Access   (Followers: 3)
Adıyaman University Journal of Science     Open Access  
Advanced Science     Open Access   (Followers: 13)
Advanced Science, Engineering and Medicine     Partially Free   (Followers: 11)
Advanced Theory and Simulations     Hybrid Journal   (Followers: 5)
Advances in Research     Open Access  
Advances in Science and Technology     Full-text available via subscription   (Followers: 17)
African Journal of Science, Technology, Innovation and Development     Hybrid Journal   (Followers: 8)
Afrique Science : Revue Internationale des Sciences et Technologie     Open Access   (Followers: 2)
AFRREV STECH : An International Journal of Science and Technology     Open Access   (Followers: 4)
American Academic & Scholarly Research Journal     Open Access   (Followers: 6)
American Journal of Applied Sciences     Open Access   (Followers: 27)
American Journal of Humanities and Social Sciences     Open Access   (Followers: 16)
ANALES de la Universidad Central del Ecuador     Open Access   (Followers: 4)
Anales del Instituto de la Patagonia     Open Access  
Applied Mathematics and Nonlinear Sciences     Open Access   (Followers: 1)
Apuntes de Ciencia & Sociedad     Open Access  
Arab Journal of Basic and Applied Sciences     Open Access  
Arabian Journal for Science and Engineering     Hybrid Journal   (Followers: 5)
Archives Internationales d'Histoire des Sciences     Partially Free   (Followers: 7)
Archives of Current Research International     Open Access  
ARO. The Scientific Journal of Koya University     Open Access  
ARPHA Conference Abstracts     Open Access   (Followers: 6)
ARPHA Proceedings     Open Access   (Followers: 5)
ArtefaCToS : Revista de estudios sobre la ciencia y la tecnología     Open Access   (Followers: 1)
Asia-Pacific Journal of Science and Technology     Open Access  
Asian Journal of Advanced Research and Reports     Open Access   (Followers: 2)
Asian Journal of Applied Science and Engineering     Open Access   (Followers: 2)
Asian Journal of Scientific Research     Open Access   (Followers: 3)
Asian Journal of Technology Innovation     Hybrid Journal   (Followers: 7)
Australian Field Ornithology     Full-text available via subscription   (Followers: 4)
Australian Journal of Social Issues     Hybrid Journal   (Followers: 7)
AZimuth     Full-text available via subscription   (Followers: 2)
Bangladesh Journal of Scientific Research     Open Access   (Followers: 1)
Beni-Suef University Journal of Basic and Applied Sciences     Open Access   (Followers: 3)
Berichte Zur Wissenschaftsgeschichte     Hybrid Journal   (Followers: 10)
Berkeley Scientific Journal     Full-text available via subscription  
BIBECHANA     Open Access   (Followers: 2)
BibNum     Open Access  
Bilge International Journal of Science and Technology Research     Open Access   (Followers: 1)
Bioethics Research Notes     Full-text available via subscription   (Followers: 16)
Bistua : Revista de la Facultad de Ciencias Básicas     Open Access  
BJHS Themes     Open Access   (Followers: 1)
Black Sea Journal of Engineering and Science     Open Access  
Borneo Journal of Resource Science and Technology     Open Access  
Brazilian Journal of Science and Technology     Open Access   (Followers: 2)
Bulletin de la Société Royale des Sciences de Liège     Open Access  
Bulletin of the National Research Centre     Open Access  
Butlletí de la Institució Catalana d'Història Natural     Open Access  
Central European Journal of Clinical Research     Open Access  
Chain Reaction     Full-text available via subscription  
Ciencia & Natura     Open Access   (Followers: 1)
Ciencia Amazónica (Iquitos)     Open Access   (Followers: 1)
Ciencia en Desarrollo     Open Access   (Followers: 3)
Ciencia en su PC     Open Access   (Followers: 1)
Ciencia Ergo Sum     Open Access  
Ciência ET Praxis     Open Access  
Ciencia y Tecnología     Open Access  
Ciencia, Docencia y Tecnología     Open Access  
Ciencias Holguin     Open Access   (Followers: 2)
CienciaUAT     Open Access   (Followers: 1)
Citizen Science : Theory and Practice     Open Access   (Followers: 2)
Communications Faculty of Sciences University of Ankara Series A2-A3 Physical Sciences and Engineering     Open Access  
Communications in Applied Sciences     Open Access  
Comprehensive Therapy     Hybrid Journal   (Followers: 3)
Comunicata Scientiae     Open Access   (Followers: 1)
ConCiencia     Open Access  
Conference Papers in Science     Open Access   (Followers: 2)
Configurations     Full-text available via subscription   (Followers: 10)
COSMOS     Hybrid Journal   (Followers: 1)
Crea Ciencia Revista Científica     Open Access   (Followers: 2)
Cuadernos de Investigación UNED     Open Access  
Current Issues in Criminal Justice     Hybrid Journal   (Followers: 15)
Current Research in Geoscience     Open Access   (Followers: 8)
Dalat University Journal of Science     Open Access  
Data     Open Access   (Followers: 5)
Data Curation Profiles Directory     Open Access   (Followers: 5)
Dhaka University Journal of Science     Open Access  
Dharmakarya     Open Access  
Diálogos Interdisciplinares     Open Access  
Digithum     Open Access   (Followers: 2)
Discover Sustainability     Open Access   (Followers: 3)
Einstein (São Paulo)     Open Access  
Ekaia : EHUko Zientzia eta Teknologia aldizkaria     Open Access  
Elkawnie : Journal of Islamic Science and Technology     Open Access  
Emergent Scientist     Open Access  
Enhancing Learning in the Social Sciences     Open Access   (Followers: 9)
Enseñanza de las Ciencias : Revista de Investigación y Experiencias Didácticas     Open Access  
Entramado     Open Access  
Entre Ciencia e Ingeniería     Open Access   (Followers: 1)
Epiphany     Open Access   (Followers: 4)
Ergo     Open Access  
Estação Científica (UNIFAP)     Open Access   (Followers: 1)
Ethiopian Journal of Education and Sciences     Open Access   (Followers: 6)
Ethiopian Journal of Science and Technology     Open Access  
Ethiopian Journal of Sciences and Sustainable Development     Open Access   (Followers: 5)
European Online Journal of Natural and Social Sciences     Open Access   (Followers: 12)
European Scientific Journal     Open Access   (Followers: 10)
Evidência - Ciência e Biotecnologia - Interdisciplinar     Open Access  
Exchanges : the Warwick Research Journal     Open Access   (Followers: 2)
Experimental Results     Open Access   (Followers: 2)
Extensionismo, Innovación y Transferencia Tecnológica     Open Access   (Followers: 3)
Facets     Open Access  
Fides et Ratio : Revista de Difusión Cultural y Científica     Open Access   (Followers: 1)
Fırat University Turkish Journal of Science & Technology     Open Access  
Fontanus     Open Access  
Forensic Science Policy & Management: An International Journal     Hybrid Journal   (Followers: 376)
Frontiers for Young Minds     Open Access  
Frontiers in Climate     Open Access   (Followers: 3)
Frontiers in Science     Open Access   (Followers: 1)
Fundamental Research     Open Access   (Followers: 1)
Futures & Foresight Science     Hybrid Journal   (Followers: 4)
Gaudium Sciendi     Open Access   (Followers: 1)
Gazi University Journal of Science     Open Access  
Ghana Studies     Full-text available via subscription   (Followers: 15)
Global Journal of Pure and Applied Sciences     Full-text available via subscription  
Global Journal of Science Frontier Research     Open Access   (Followers: 2)
Globe, The     Full-text available via subscription   (Followers: 4)
HardwareX     Open Access  
Heidelberger Jahrbücher Online     Open Access  
Heliyon     Open Access  
Himalayan Journal of Science and Technology     Open Access   (Followers: 1)
History of Science and Technology     Open Access   (Followers: 1)
Hoosier Science Teacher     Open Access  
Iberoamerican Journal of Science Measurement and Communication     Open Access   (Followers: 1)
Impact     Open Access   (Followers: 2)
Indian Journal of History of Science     Hybrid Journal   (Followers: 2)
Indonesian Journal of Fundamental Sciences     Open Access  
Indonesian Journal of Science and Mathematics Education     Open Access   (Followers: 4)
Indonesian Journal of Science and Technology     Open Access  
Ingenieria y Ciencia     Open Access   (Followers: 1)
Innovare : Revista de ciencia y tecnología     Open Access  
Instruments     Open Access  
Integrated Research Advances     Open Access  
Interciencia     Open Access   (Followers: 1)
Interface Focus     Full-text available via subscription  
International Annals of Science     Open Access  
International Archives of Science and Technology     Open Access  
International Journal of Academic Research in Business, Arts & Science     Open Access   (Followers: 2)
International Journal of Advanced Multidisciplinary Research and Review     Open Access  
International Journal of Applied Science     Open Access  
International Journal of Basic and Applied Sciences     Open Access   (Followers: 4)
International Journal of Computational and Experimental Science and Engineering (IJCESEN)     Open Access  
International Journal of Culture and Modernity     Open Access   (Followers: 3)
International Journal of Engineering, Science and Technology     Open Access  
International Journal of Innovation and Applied Studies     Open Access   (Followers: 12)
International Journal of Innovative Research and Scientific Studies     Open Access   (Followers: 6)
International Journal of Network Science     Hybrid Journal   (Followers: 3)
International Journal of Recent Contributions from Engineering, Science & IT     Open Access   (Followers: 1)
International Journal of Research in Science     Open Access   (Followers: 2)
International Journal of Science & Emerging Technologies     Open Access   (Followers: 1)
International Journal of Social Sciences and Management     Open Access   (Followers: 3)
International Journal of Technology Policy and Law     Hybrid Journal   (Followers: 7)
International Letters of Social and Humanistic Sciences     Open Access   (Followers: 1)
International Review of Applied Sciences     Open Access  
InterSciencePlace     Open Access   (Followers: 1)
Investiga : TEC     Open Access  
Investigación Joven     Open Access  
Investigación Valdizana     Open Access  
Investigacion y Ciencia     Open Access   (Followers: 1)
Iranian Journal of Science and Technology, Transactions A : Science     Hybrid Journal  
iScience     Open Access   (Followers: 2)
Issues in Science & Technology     Free   (Followers: 7)
Ithaca : Viaggio nella Scienza     Open Access  
J : Multidisciplinary Scientific Journal     Open Access  
Jaunujų mokslininkų darbai     Open Access   (Followers: 1)
Journal de la Recherche Scientifique de l'Universite de Lome     Full-text available via subscription   (Followers: 2)
Journal of Chromatography & Separation Techniques     Open Access   (Followers: 12)
Journal of Advanced Research     Open Access   (Followers: 3)
Journal of Al-Qadisiyah for Pure Science     Open Access   (Followers: 1)
Journal of Alasmarya University     Open Access   (Followers: 2)
Journal of Analytical Science & Technology     Open Access   (Followers: 6)
Journal of Applied Science and Technology     Full-text available via subscription   (Followers: 1)
Journal of Applied Sciences and Environmental Management     Open Access   (Followers: 3)
Journal of Big History     Open Access   (Followers: 3)
Journal of Composites Science     Open Access   (Followers: 3)
Journal of Critical Thought and Praxis     Open Access   (Followers: 2)
Journal of Deliberative Mechanisms in Science     Open Access  
Journal of Diversity Management     Open Access   (Followers: 6)
Journal of Indian Council of Philosophical Research     Hybrid Journal  
Journal of Institute of Science and Technology     Open Access  
Journal of Integrated Science and Technology     Open Access  
Journal of Interaction Science     Open Access   (Followers: 1)
Journal of Kerbala University     Open Access   (Followers: 1)
Journal of King Saud University - Science     Open Access   (Followers: 1)
Journal of Mathematical and Fundamental Sciences     Open Access  
Journal of Natural Sciences and Mathematics Research     Open Access  
Journal of Natural Sciences Research     Open Access   (Followers: 4)
Journal of Negative and No Positive Results     Open Access  
Journal of Responsible Technology     Open Access   (Followers: 1)
Journal of Science (JSc)     Open Access  
Journal of Science and Engineering     Open Access  
Journal of Science and Technology     Open Access   (Followers: 2)
Journal of Science and Technology     Open Access   (Followers: 1)

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Black Sea Journal of Engineering and Science
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Online) 2619-8991
Published by DergiPark Homepage  [100 journals]
  • The Effect of Preheating on the Properties of the Fly Ash Self-Compacting
           Concrete

    • Authors: Metehan ARDAHANLI ; Meral OLTULU , Ibrahim ALAMERİ
      Abstract: Self-compacting concrete is a concrete capable of placing with its own weight and does not require vibration for compaction and placement. Self-compacting concrete has important advantages compared to traditional concrete such as requires minimum labor, economical, fast casting and easy to fill the mold without any separation between reinforcement. Mixing design and production requires special precision. In this study, the temperature change of the curing conditions at an early age was investigated for the self-compacting concretes obtained with the addition of fly ash at different ratios by keeping the water-cement ratio constant. The reference group was cured among the 28 days while the other group samples put in the oven at 75 °C for 1 day and then kept in water. The samples were subjected to various mechanical tests and Self-compacting concrete fresh tests. The compressive strength, bending tensile strength, splitting tensile strength and density of the samples were measured. According to the results, in the bending tensile strength test, the best results were obtained with the addition of 30% fly ash in both groups, while the best result in the splitting tensile strength test was observed in the samples with the addition of 30% fly ash at 28 days with normal water curing. The compressive strength of the samples with water cure for 28 days was higher than the samples exposed to 75°C temperature at early age. In addition, this study reported that concretes with fly ash can have a positive effect when exposed to preheating.
      PubDate: Thu, 01 Jul 2021 00:00:00 +030
       
  • Comparison of Chemical and Antioxidant Properties of Mentha Piperita L.,
           Salvia Officinalis L., Rosmarinus Officinalis L. and Lavandula
           Angustifolia L.

    • Authors: Ayşegül TÜRK BAYDIR
      Abstract: 4 different plant species belonging to the same family mint (Mentha piperita), sage (Salvia officinalis), rosemary (Rosmarinus officinalis), lavender (Lavandula angustifolia) were harvested from the Afyon region. Total antioxidant and phenolic contents were analyzed by DPPH and Folin-Ciocalteu method. The effect of extra virgin olive oils oxidation stability was tested by means of rancimat method. According to DPPH analysis results, M. piperita is the highest antioxidant capacity and the radical scavenging activity is 95.31%. The radical scavenging activities of S. officinalis, R. officinalis and L. angustifolia are respectively 91.83%, 54.28%, and 18.85%. The total phenolic content of M. piperita, S. officinalis, R. officinalis and L. angustifolia plants as gallic acid were respectively; 0.32, 0.28; 0.26 and 0.18 mg/100ml. According to the results of the study, the order of the plants did not change in terms of phenolic and antioxidant content, M. piperita has the highest values and L. angustifolia has the lowest. It was also found that the plants are effective on the oxidation stability of extra virgin olive oil and prevent oxidation in the order of large to small R. officinalis, M. piperita, S. officinalis and L. angustifolia.
      PubDate: Thu, 01 Jul 2021 00:00:00 +030
       
  • Presence of Flammable and Explosive Facilities Around Airports in Turkey
           That May Pose a Risk to Flight Operations

    • Authors: Ömer Faruk UZUN ; Faik Ahmet SESLİ
      Abstract: In the study, the existence of flammable and explosive facilities that pose a danger to flight operations, in the landing-take-off corridor and its immediate surroundings, according to the "Construction Criteria Around Airports" published by the “Sivil Havacılık Genel Müdürlüğü” (General Directorate of Civil Aviation). In this context, it was determined that there are 190 flammable and explosive facilities as a result of the examination of the risk area determined for 60 airports where national and international flights are made in our country. Of these airports, Mardin Airport has the highest number of flammable and explosive facilities in the risky area with 12, while it has been determined that 16 airports do not have such facilities. The average number of flammable and explosive facilities per airport was 3.166 ± 3.157. It is of great importance to take the mentioned facilities out of the risk areas specified in the legislation in order to ensure maximum flight safety. On the other hand, it has been observed that the direction of the airport runways facing the surrounding city and main roads directly affects the risk. For this reason, evaluating this issue in the construction of future airports will contribute to keeping the loss at a minimum level in possible accidents.
      PubDate: Thu, 01 Jul 2021 00:00:00 +030
       
  • The Relationship Between Students' Problem Solving Skills,
           Self-Esteem And Statistics Attitudes

    • Authors: Taner TUNÇ ; Funda YUMUK , Erdinç KOLAY
      Abstract: Statistics is a distinctive science based on mathematics. Measurement, evaluation and interpretation of both numerical and verbal based concepts can be done with statistics. For this reason, every branch of science makes use of statistical science and many departments teach statistics courses. In this study, Ondokuz Mayıs University students ' attitudes towards the statistics course were affected by their self-esteem and problem-solving abilities. 1034 students, 501 of whom were women and 533 of whom were men, participated in the study in various departments of Ondokuz Mayıs University. A 3-scale questionnaire with statistical attitude scale (ITO), Rosenberg self-esteem scale (BSÖ), Problem solving inventory (PCE) and demographic information was used as a data collection tool. A statistically significant structural model has been proposed with the data obtained.
      PubDate: Thu, 01 Jul 2021 00:00:00 +030
       
  • Determining Suitable Places for Beekeeping Activities with Geographical
           Information Systems: A Case of Şavşat District

    • Authors: Eray YILMAZ ; Faik Ahmet SESLİ , Ömer Faruk UZUN
      Abstract: In this study, it is aimed to determine the most suitable locations for beekeeping in Şavşat district of Artvin province by using geographic information systems with "weighted overlap analysis". Within the scope of the study, maps of 1) Plant species richness, 2) Proximity to water resources, 3) Slope exposure, 4) Altitude, 5) Precipitation, 6) Slope, 7) Distance to settlements and 8) Roads were created. According to the maps produced, it was seen that the district is located in a valley surrounded by high mountains and has an altitude between 591 m and 3250 m. Since the north-west part of the district has a high slope, whereas the south-west direction contains wide plains, the south-east of the region has high and low slopes, so there are wide meadows. It has been determined that road directions and rivers show parallelism in the inner parts, and the roads follow the river beds in the region. Scattered settlement type was seen in the region from the examination of the slope map and the map of settlements. It is understood from the Baku map that the direction of the region is often north-west, south-southeast, that there are many valleys in the region, and that the mountains generally extend in the northwest-southeast direction. It is understood from the slope exposure map that the direction of the region is often north-west, south-southeast, that there are many valleys in the region, and that the mountains generally extend in the northwest-southeast direction. From the precipitation map created, the amount of precipitation increases from the south to the north, and from the flora map, meadows in the southern parts and agricultural areas in the inner parts depending on the settlements were observed due to the high altitude and low slope. It has been determined that the presence of forests is high in the interior and northern parts due to the proximity to water sources and rainfall. Locations by target markets with targeted collision analysis in the USA; demonstrating the subjects in use by dividing them into 5 different classes as “Contrary, Inappropriate, Moderately appropriate, Appropriate and Most appropriate”.
      PubDate: Thu, 01 Jul 2021 00:00:00 +030
       
  • Investigation of Recovery Potential of Urban Solid Wastes; Karaman Example

    • Authors: Yusuf Alparslan ARGUN ; Melayib BİLGİN
      Abstract: Changing technology and consumer habits in the welfare of society is increasing with changing expectations of every day. These technological developments and comfortable life expectations increase the product and quantity produced. This directly affects the consumption rate of natural resources. In addition, waste generated as a result of consumption creates a problem in terms of environmental health and natural resources. In this regard, recycling is inevitable both to reduce the use of natural resources for new product production and to minimize the environmental impact of waste generated as a result of consumption. In this study, the utilization potential of urban solid wastes generated in Karaman to be utilized in the context of compost and recycling has been examined. In the study, it was determined that 68270 tons of municipal solid waste is generated annually in Karaman. It constitutes that 45.08% of this solid waste is kitchen waste, 3.41% park and garden waste and 30.36% recyclable waste. The daily average amount of packaging waste collected by the licensed facility throughout Karaman is 10380 kg, corresponding to 5.6% of the solid waste generated. The ratio of the amount of packaging waste collected to the amount of recyclable waste is 18.6%. In the province of Karaman, there are 7 automatic compost machines with a capacity of 1000 L/week, and the composting process is not actively carried out. As a result, the recycling potential of the Karaman province has a value that should be taken seriously and it should be managed by zero waste principles.
      PubDate: Thu, 01 Jul 2021 00:00:00 +030
       
  • Determining the Resistance of Some Rice Cultivars to Iron Deficiency

    • Authors: Güney AKINOĞLU ; Ahmet KORKMAZ
      Abstract: The aim of this study is to determine the resistance of some paddy varieties to iron deficiency. Seedlings of 5 different paddy varieties were planted in plastic pots filled with 1 kg of quartz sand containing 0 %and 4 %lime (CaCO3), with 10 plants per pot. A nutrient solution containing Fe-EDDHA in doses of 0 and 45 µM Fe in each lime dose was given to the rice plant. It was seen that 5 different paddy varieties grown under iron deficiency conditions were collected in 2 main groups in terms of 22 characteristics. While Biga pearl and Osmancık-97 varieties formed the first group, Ronaldo and Edirne varieties formed the second group. On the other hand, Hamzadere variety was found closer to the second group consisting of Ronaldo and Edirne varieties. Among the varieties grown under iron deficiency conditions, the closest two paddy varieties in terms of the characteristics examined are Biga pearl and Osmancık-97 varieties; On the other hand, it has been determined that the most distant paddy varieties are Biga pearl and Hamzadere paddy varieties. It was determined that the most resistant variety to iron deficiency was Biga pearl, while the most sensitive variety was the Hamzadere variety. It has been determined that the best characteristics determining iron deficiency in Ronaldo and Edirne paddy cultivars grown under iron deficiency conditions are relative glutathione reductase activities and values related to relative proline content and these varieties are good varieties in terms of these features. These varieties are gathered in the same group. Relative glutathione reductase activity and relative proline content were respectively 95.39%and 90.95%in Ronaldo paddy variety, while in Edirne variety it was 78.94%and 87.21%, respectively. Osmancık-97 and Biga pearl varieties grown under iron deficiency conditions are good varieties in terms of their relative carotenoid content and it has been determined that these varieties are in the same group.
      PubDate: Thu, 01 Jul 2021 00:00:00 +030
       
  • Genetic Resources and Diversity among Sheep Breeds of Asia and Europe

    • Authors: Muhammad Shahzad HUSSAIN ; Metin ERDOĞAN
      Abstract: Sheep has been domesticated southwestern Asia for about 8000-9000 years ago and represented one of earliest livestock species. Ancestor relationship can be investigated through mtDNA data. There are many genetic markers to determine the relationship between and among the sheep breeds. Restriction fragment length polymorphisms are basic technique and have less variability and many restrictions as compared to Random amplification of polymorphic DNA. Due to specific amplification of Amplified fragment length polymorphisms it is more suitable than Restriction fragment length polymorphisms and Random amplification of polymorphic DNA. Microsatellites are widely used technique for the determination of genetic diversity. This technique provides information about the classification and characterization of sheep breeds. However this technique cannot provides information on breed functional traits. On the basis of mtDNA analysis haplotypes groups differ in sequences by any extent of Ovis species. Haplotype A and B are two of most important haplotype groups. Haplotype A carries Asiatic mouflon (Ovis orientalis) while Haplotype B carries European mouflon (Ovis musimon). Actually Haplotype A and B are both found in Asia while Haplotype B only dominates in Europe so sheep descent from one or more Asiatic mouflon. Haplotype C also found in Turkey, Portugal, Caucasus and China while Haplotype D present in Karachai sheep from Caucasian. Haplotype E which is very rare and found only in Turkey.
      PubDate: Thu, 01 Jul 2021 00:00:00 +030
       
  • Determining the Resistance of Some Tomato Lines to Iron Deficiency

    • Authors: Ahmet KORKMAZ ; Elif BOZ , Güney AKINOĞLU
      Abstract: The purpose of this study is to determine the resistance of some tomato lines to iron deficiency.For this purpose, a factorial trial was conducted as 12 × 3 (line × iron dose) in 445 g quartz sand media. Iron doses applied to 12 different Tarbio (TB) tomato lines in the form of Fe-EDDHA are: Deficient (0.2 µM Fe), sufficient (45 µM Fe), sufficient (100 µM Fe). In the experimet, each treatment was done in 3 replications. Fe EDDHA was added to the pH adjusted to 6.0 plant nutrient solution at the iron concentrations reported above. In this way, a nutrient solution containing iron in different concentrations was applied as 50 mL per day during the trial. The experiment continued for 50 days under greenhouse conditions. While lines TB-01, TB-10, TB-22 and TB-65 take place in the first main group under iron deficiency conditions; the second main group included lines TB-14, TB-18, TB-28, TB-31, TB-35, TB-40, TB-90 and TB-122. It has been determined that the lines farthest from each other are lines TB-01 and TB-14. When these lines were compared with each other, it was determined that the values of dry matter content, chlorophyll-a, chlorophyll-b, total chlorophyll, carotenoid contents and ferric reductase activity in the leaf under iron deficiency conditions of the line numbered TB-14 were higher than the line number TB-01. On the other hand, active iron content, root ferric reductase activity and root cation exchange capacity of tomato line numbered TB-01 were found to be higher than line TB-14. It was also determined that lines TB-18 and TB-28 of tomato lines grown under iron deficiency conditions were the closest lines to each other.
      PubDate: Thu, 01 Jul 2021 00:00:00 +030
       
  • Traditional Uses, Phytochemical Compositions and Biological Activities of
           Orchids

    • Authors: Erdi Can AYTAR ; Yasemin ÖZDENER KÖMPE
      Abstract: Orchids are highly diverse plants in terms of color, size, blooming patterns, as well as their scent characteristics. Their distribution ranges from tropical regions to high mountains. Although orchids are primarily grown as ornamental plants, many are also rich in other chemical components such as polysaccharides and alkaloids. Therefore, it is used in different parts of the world and cultures in the pharmaceutical and food industries. Secondary metabolites are defined as low molecular weight organic compounds. Although these compounds are not primarily responsible for growth and development, they are produced under special conditions such as stress. Different classes of secondary metabolites have been reported in medicinal orchids to date and have been shown to play an important role in the pharmaceutical field. In this study, it is aimed to examine orchids in terms of their traditional uses, biological activities and bioactive compounds. It is thought that a detailed examination of these species will contribute to both public health and the national economy.
      PubDate: Thu, 01 Jul 2021 00:00:00 +030
       
 
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