A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  

        1 2 3 | Last   [Sort by number of followers]   [Restore default list]

  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 434 journals)
Showing 1 - 200 of 265 Journals sorted alphabetically
AAS Open Research     Open Access   (Followers: 2)
ABC Journal of Advanced Research     Open Access  
Academic Voices : A Multidisciplinary Journal     Open Access   (Followers: 2)
Accountability in Research: Policies and Quality Assurance     Hybrid Journal   (Followers: 18)
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: 10)
Advanced Theory and Simulations     Hybrid Journal   (Followers: 5)
Advances in Research     Open Access   (Followers: 1)
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)
Akademik Platform Mühendislik ve Fen Bilimleri Dergisi     Open Access   (Followers: 2)
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: 15)
Anadol University Journal of Science and Technology B : Theoritical Sciences     Open Access  
Anadolu University Journal of Science and Technology A : Applied Sciences and Engineering     Open Access  
ANALES de la Universidad Central del Ecuador     Open Access   (Followers: 3)
Anales del Instituto de la Patagonia     Open Access  
Annali dell'Istituto e Museo di storia della scienza di Firenze     Hybrid Journal  
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: 6)
Archives of Current Research International     Open Access  
ARO. The Scientific Journal of Koya University     Open Access  
ARPHA Conference Abstracts     Open Access   (Followers: 7)
ARPHA Proceedings     Open Access   (Followers: 4)
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)
Avances en Ciencias e Ingeniería     Open Access  
Avrasya Terim Dergisi     Open Access  
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  
Bitlis Eren Üniversitesi Fen Bilimleri Dergisi     Open Access  
Bitlis Eren University Journal of Science and Technology     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  
Celal Bayar Üniversitesi Fen Bilimleri Dergisi     Open Access   (Followers: 1)
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: 2)
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: 1)
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  
Crea Ciencia Revista Científica     Open Access   (Followers: 3)
Cuadernos de Investigación UNED     Open Access  
Cumhuriyet Science Journal     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: 4)
Data Curation Profiles Directory     Open Access   (Followers: 4)
Dhaka University Journal of Science     Open Access  
Dharmakarya     Open Access  
Diálogos Interdisciplinares     Open Access  
Digithum     Open Access   (Followers: 2)
Discover Sustainability     Open Access  
Eastern Anatolian Journal of Science     Open Access  
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)
Episteme Transversalis     Open Access  
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: 7)
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)
Extensionismo, Innovación y Transferencia Tecnológica     Open Access   (Followers: 5)
Facets     Open Access  
Fides et Ratio : Revista de Difusión Cultural y Científica     Open Access   (Followers: 1)
Fırat Üniversitesi Fen Bilimleri Dergisi     Open Access  
Fırat University Turkish Journal of Science & Technology     Open Access  
Fontanus     Open Access  
Forensic Science Policy & Management: An International Journal     Hybrid Journal   (Followers: 372)
Frontiers for Young Minds     Open Access  
Frontiers in Climate     Open Access   (Followers: 3)
Frontiers in Science     Open Access   (Followers: 1)
Futures & Foresight Science     Hybrid Journal   (Followers: 3)
Gaudium Sciendi     Open Access   (Followers: 1)
Gazi University Journal of Science     Open Access  
Gaziosmanpaşa Bilimsel Araştırma Dergisi     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)
Hoosier Science Teacher     Open Access  
Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi / Journal of the Institute of Science and Technology     Open Access  
Impact     Open Access   (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 Advancement in Education and Social Sciences     Open Access   (Followers: 1)
International Journal of Advances in Engineering, Science and Technology     Open Access   (Followers: 3)
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 Engineering, Science and Technology     Open Access  
International Journal of Engineering, Technology and Natural Sciences     Open Access  
International Journal of Innovation and Applied Studies     Open Access   (Followers: 12)
International Journal of Innovative Research and Scientific Studies     Open Access   (Followers: 5)
International Journal of Innovative Research in Social and Natural Sciences     Open Access   (Followers: 2)
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 Sciences : Basic and Applied Research     Open Access  
International Journal of Social Sciences and Management     Open Access   (Followers: 2)
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  
International Scientific and Vocational Studies Journal     Open Access   (Followers: 2)
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  
Issues in Science & Technology     Free   (Followers: 7)
İstanbul Ticaret Üniversitesi Fen Bilimleri Dergisi / İstanbul Commerce University Journal of Science     Open Access  
Istituto Lombardo - Accademia di Scienze e Lettere - Rendiconti di Scienze     Open Access  
Ithaca : Viaggio nella Scienza     Open Access  
J : Multidisciplinary Scientific Journal     Open Access  
Journal de la Recherche Scientifique de l'Universite de Lome     Full-text available via subscription   (Followers: 2)
Journal for New Generation Sciences     Open Access   (Followers: 3)
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 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  

        1 2 3 | Last   [Sort by number of followers]   [Restore default list]

Similar Journals
Journal Cover
Celal Bayar Üniversitesi Fen Bilimleri Dergisi
Number of Followers: 1  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1305-130X - ISSN (Online) 1305-1385
Published by Celal Bayar Üniversitesi Homepage  [1 journal]
  • Tensile Deformation Behavior of Ultrasonically Consolidated Laminated
           Ti-Al Composites at Warm Forming Temperatures

    • Authors: İrfan Kaya
      Abstract: The objectiveof the present study is to characterize the mechanical behavior of laminatedmetal composites (LMCs) that consist of commercially pure titanium and 1100aluminum layers which were ultrasonically consolidated.  Ultrasonic consolidation is a low temperatureprocess used to fabricate layered solid metal structures. Tensile tests ofTi-Al laminated composites (in 3, 5, and 7 bilayer configurations) wereperformed at four various temperatures (25 ºC, 100 ºC, 200 ºC, and 300 ºC)using strain rate of 0.017 /s. The effect of temperature, sonotrode travel direction,and number of layers on the material behavior were discussed on the basis ofuniaxial tensile test results. The ultimate tensile strength and yield strengthis found to decrease with increasing temperature. In general, high strainvalues were obtained in Y samples compared to X samples. The maximum strainvalue was 0.42 at 300 °C temperature in the 5 bilayer Y sample.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • Contents, Volume 14, Issue 4, 2018

    • Authors: Kenan Dost; Mustafa Oskay
      Abstract: 1-1 Contents, Volume 14, Issue 4, 2018
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • Papain Immobilization on NiFe2O4 Magnetic Nanoparticles Functionalized
           

    • Authors: Nuray Güy
      Abstract: NiFe2O4magnetic nanoparticles were solvothermally prepared. NiFe2O4magnetic nanoparticles were functionalized with gallic acid and then papainimmobilized on NiFe2O4 functionalized with gallic acid. The obtained samples werecharacterized and the activities of free and immobilized papain were studied.Immobilized papain showed higher and more effective activity than free papain. Thisimmobilized papain retained about 75.5% of its initial activity after 8 weeksof storage at 4 °C in sodium phosphate buffer (0.1 M, pH 6.5), while the freetrypsin protected 30.5% of its initial activity during the same condition.Furthermore, the immobilized papain protected approximately 51% of its initialactivity following the times of ten sequential reuse. Finally, the microwaveassisted digestion of bovine serum albumin was carried out for 15 s withmatrix-assisted laser desorption/ionization mass spectrometry by using free andimmobilized papain.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • Different Extraction Techniques on the Characteristic Properties of
           Valonea Tannin

    • Authors: Ersin Önem; Ali Yorgancıoğlu, Onur Yılmaz
      Abstract: Valoneaextract is a natural tannage widely applied in leather industry which isproduced via conventional hot water extraction method. On the otherhand moreenvironmental friendly methods have started to be used in extraction technologyrecently. Present paper reports on the effect of different extraction methodson the properties of valonea extracts. For this purpose, conventional solventextraction (CSE) (methanol/water mixture), supercritical CO2 (scCO2)extraction and pressurized fluid extraction (PFE) (water/CO2 binarysystem) techniques have been employed on valonea and the obtained extracts havebeen characterized. Molecular weight of the tannins was determined by gelpermeation chromatography (GPC), particle size was examined by MalvernZetasizer instrument, chemical structure by Fourier Transform InfraredSpectroscopy (FTIR). Tannin content was also examined and the results were comparedwith commercial valonea extract (CVT). The results showed that especiallyparticle size of the tannins was affected by the applied extraction method andthe smallest particle size was obtained by PFE method as 505.3 nm compared tocommercial tannin as 983.0 nm of average particle size. PFE method was alsoprovided more uniform extract according to the polydispersity index values. GPCand FTIR analyses showed slightly differences on the characteristics of tannins.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • Optimization of Cryopreservation Process Using Response Surface
           Methodology for Chlorella saccharophila and Chlorella zofingiensis

    • Authors: Zeliha Demirel; Esra Imamoglu, İrem Deniz, Meltem Conk Dalay
      Abstract: The preservation of microalgaein a stable state is a fundamental requirement in pharmaceutical, agricultural,environmental sciences and different industries. Cryopreservation is widelystabilized for achieving long-term storage and has been applied to anincreasingly diverse range of microalgae and cell cultures. The continuous storageof actively growing microalgae strains by routine serial subculture isrelatively time-consuming and this technique has possible contamination risks.In this study, the optimization of cryopreservation process was carried out fortwo different Chlorella strainsusing response surface methodology (RSM) with three factors (cryoprotectantconcentration, incubation time and cryopreservation time) including 19 runs. Theoptimal cell viability of C. zofingiensiswas found at the dimethyl sulfoxide (DMSO) concentration of 12.89% at the incubationtime of 8.14 min and with the cryopreservation time of 93.45 day, while C.saccharophila was found at theDMSO concentration of 12.86 % at the incubation time of 7.99 min and atcryopreservation time of 95.17 day.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • Regression Analysis of Soil Compaction Parameters Using Support Vector
           Method

    • Authors: Osman Günaydın; Abdurrahman Özbeyaz, Mehmet Söylemez
      Abstract: Some challenging studies are experimentally appliedfor characterizing parameters in Proctor compaction tests. Compression of afill is mechanically done in Compaction process. Compaction is a physicalprocess which gets the soil into a dense state. Improving the shear strengthand decreasing the compressibility and permeability of the soil can be donewith this physical process. Support Vector Machine (SVM) is a popular methoddue to its performance today. This method is commonly employed in theregression analysis as well as being used in the classification process. Inthis study, SVM was employed to predict of compaction parameters (maximum dryunit weight and optimum moisture content) without making any experiments in a soillaboratory. In the study, more than a hundred compaction data collected fromthe small dams in central Anatolia region was employed. In the study, R errorsare satisfied (0.92 and 0.89) for SVM models. Consequently, the proposedregression analysis with SVM is useful for model design of the projects in wherethere are limitations as financial and temporal.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • Some Null Quaternionic Curves in Minkowski spaces

    • Authors: Tanju Kahraman
      Abstract: Inthis work, we examine null quaternionic rectifying curves and null quaternionicsimilar curves in Minkowski space E1^3. Also, we defined null quaternionic (1,3)-Bertrand partnercurves in E1^4. Thus, we have characterizations between curvatures of thesecurves in Minkowski spaces.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • Corrosion and Wear Properties of Cu-TiC Composites Produced by Hot
           Pressing Technique

    • Authors: Mehmet Akkaş; Serkan Islak, Cihan Özorak
      Abstract: Cu-xTiC (x=0, 1, 5, 10 and 15wt.%) composites were prepared by hot pressing (HP) technique. Themicrostructure, corrosion and wear features of Cu matrix composites (CMCs) wereinvestigated. The wear surfaces and microstructure of the CMCs were analyzedusing SEM-EDS. Phases of samples were identified by means of XRD. Hardnessmeasurements of the composites were made using a microhardness device. Hardnesstests showed that the hardness tends to increase with increasing TiC amount. Wearproperties of the CMCs were determined using ball-on-disc method. Significantdecreases in wear rates were observed in composites reinforced with TiC. The corrosionproperties of the composites were characterized by potentiostatic polarizationtest. Corrosion results showed that the corrosion resistance of the compositesdecreased with the increase of TiC content in Cu. Among the composites, Cu-1% TiC has the bestcorrosion resistance.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • Seiberg-Witten-Like Equations on 8-Manifolds without Self-Duality

    • Authors: Serhan Eker
      Abstract: In this paper, SeibergWittenlike equations without selfduality are defined on dimensional manifolds. Then, nontrivial and flat solutions are given to them on . Finally, on realdimensional Kähler manifolds a global solution to these equation isobtained for a given negative and constant scalar curvature.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • Investigate the Fluctuation Size in Thrust Force and Chip Morphology in
           Drilling

    • Authors: Zülküf Demir
      Abstract: Drilling is a widely used production method, having a broad range of applicationstaking part in machining operations. The length of the cutting edge of thedrill causes variations in cutting speed, resulting in undesired outputs. Inorder to decrease this adverse impact in drilling, selecting higher pointangles is an obligation, associated with three different kinds of feed ratesand spindle speeds. The aim of this study is to investigate the effect of feedrate, spindle speed, and point angle on the fluctuation size in thrust forcebesides the effect of the fluctuation size in thrust force on the surfaceroughness, tool wear and chip morphology. In conclusion, while higher pointangles provided optimum outputs such as lower fluctuation size in thrust force,less tool wear, better surface quality and continuous chip form, the effect offeed rate and spindle speed on these outputs varied depending on each other.With the stability in fluctuation size in thrust force, less tool wear tookplace, and better surface quality and continuous chip form were achieved. However,due to the effect of vibrations, higher fluctuation size in thrust force causedundesired outputs, such as poor surface quality, more tool wear, removal chipin short and brittle form during the drilling operations.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • Investigation of Phase Transitions in Nematic Liquid Crystals by
           Fractional Calculation

    • Authors: Müjde Durukan Gültepe; Zekai Tek
      Abstract: Inthis study, we investigate nematic-isotropic phase transitions in liquidcrystals using fractionally generalized form of the Maier-Saupe Theory (MST).MST is one of the mean-field theories commonly used in the nematic liquidcrystals which proved to be extremely useful in explaining nematic-isotropicphase transitions. Fractionally obtained results compared with those of theexperimental data for p-azoxyanisole (PAA) in the literature. In this context,the dependence of fourth rank order parameters on second rank order parametersis handled by being a measure of fractality of space. It is observed that thevariation of second-rank and fourth rank order parameters versus temperatureare in accordance with some values of fractal dimensions. As a result, we canconclude that there is a close relationship between temperature and fractional derivativeorder parameters.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • In Vitro Propagation of Wetland Medicinal Plant Lythrum salicaria L.

    • Authors: Betül Akın; Burcu Çetin, Nüket Akanıl Bingöl
      Abstract: The aim of this experiment is to develop a protocol to establish the in vitro propagation potential of Lythrum salicaria L (purple loosestrife).Seeds of L. salicaria were germinatedand grown in Murashige Skoog (MS) medium for 30 days. At the end of 30 days, shoot tips of L. salicaria were cultured on MS medium supplemented with differentcombinations and concentrations of 6-benzylaminopurine (BAP; 1, 2 and 3 mg/L) and1-naphthaleneacetic acid (NAA; 0, 0.1 and 0.5 mg/L). Regenerated shoots were transferredto MS supplemented with varying concentrations of different auxins: NAA (0.5and 1 mg/L) and indole-3-butyric acid (IBA; 0.5 and 1.0 mg/L) for rooting. Amongthe cytokinins investigated, BAP indicated the best response to initiate shootelongation and multiple shoot formation alone. The highest number of shoot perexplant (37±3.38) was obtained in MS medium with 1 mg/L BAP. Although, thehighest shoot length (3.1 cm ± 0.48) was found on medium with 1 mg/L BAP+0.5 mg/LNAA, there were no statistically differences among all types of medium.Percentage of rooting, shoot length and root length were altered significantlywith different concentrations of NAA and IBA. Thus, shoot length (9.5 cm±0.46),root length (4.1 cm±0.13) and the percentage of rooting (100%) increasedsignificantly with a concentration of 1 mg/L NAA.  It was concluded that MS medium with 1 mg/LNAA has been superior for root development compared to other hormoneconcentrations.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • Optimal Site Selection for a Solar Power Plant in Turkey Using a Hybrid
           AHP-TOPSIS Method

    • Authors: Merve Akçay; Mehmet Atak
      Abstract: Energy is an increasing need arising from the existence of mankind.Electricity is one of the most important secondary energy sources. Obtaining ofelectricity from fossil sources leads to negative consequences such as climatechange and environmental pollution. In addition, fossil resources are not endless. For this reason, theimportance of renewable energy sources that are sustainable and not harmful tothe environment such as fossil fuels is increases for electricity generation.In this study, electricity generation with solar power is considered. There are somefactors to achieve efficiency in the projects of obtaining electric energy withsolar energy. One of the most important of these factors is to choose the rightplace. There are multiple criteria that affect the correct location selection. Multiplecriteria decision making methods are suitable for site selection studies wherethere are many criteria. In this study, Konya, Karaman, Burdur, Antalya,Mersin, Van which are fortunate cities in Turkey in terms of sunbathing areselected as alternatives. A hybrid AHP and TOPSIS method is used to select thebest alternative according to the sub-criteria determined under the economic,technical, social and geographical main criteria. Criterion weights are foundby the AHP method and alternatives are ranked with the TOPSIS method. Theresult of the study is thatMersin is the best alternative for solar power plant and Mersin is followed byKaraman, Burdur, Konya, Van and Antalya respectively.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • Exogenous Polyamine Treatment Prevents UV-A Induced Cellular Damage and
           Photoinhibition of Photosystem II in Lichen Physcia semipinnata (J. F.
           Gmel.) Moberg

    • Authors: Dilek Ünal; İnci Tüney Kızılkaya
      Abstract: In this study the protection ability of polyamines onPhotosystem II (PSII), the proline content of the cells and necrosis formationinduced by Ultraviolet-A irradiation were studied. Although 24 h Ultraviolet-Aexposure decreased the photosynthetic quantum yield (Fv/Fm) ratio in Physcia semipinnata (J. F. Gmel.) Moberg,thalli that treated with 1 mM polyamine, especially spermidine and spermine,were slightly influenced by the UV-A exposure. It was also found that spd andspm treated samples had lower proline content than putrescine (put)-treated samples.Moreover, It was found that the samples that were treated with spd and spm hadlower percentage of DNA damage than put-treated samples and non-treated groups.In this study, Ultraviolet-A induced DNA damage detected by acridineorange/ethidium bromide staining assay. The DNA damage in thalli of P. semipinnatawas detected in situ in phycobiont layer after 24 h of Ultraviolet-A exposure,in contrast, polyamine-treated samples had a lower rate of necrotic cells.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • Analysis of Solar Radiation Data in Van, Turkey

    • Authors: İrfan Uçkan
      Abstract: This work has processed, analyzed and regulated thedata comprising surface temperature, sunshine duration and global solarradiation for the period of 1993 to 2007 in Van (38.28oN, 43.20oE).  Hourly, monthly and annual variations ofsolar radiation are calculated. Furthermore, the annual variations of sunshineduration, surface temperature and clearness index are also analyzed. Annualaverage maximum global solar radiation was seen in 2000 with 19.68 MJ/m2day andthe trend of yearly series of global solar radiation increases from 1993 to2007. The highest hourly and monthly values are 3260 kJ/m2h and 28.72 MJ/m2day,respectively. Besides, daily monthly and annual of clearness index, hourlyfrequency distribution and sunshine duration are discussed and the solarradiation and the annual clearness index are correlated. Consequently, the Vanregion has a high solar energy potential and a high frequency of cleardaylight.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • Microbiological Quality of Eight Wild Edible Mushroom Species from Turkey

    • Authors: Bülent Ergönül; Fatih Kalyoncu, Ilgaz Akata
      Abstract: In this study, it was aimed to determine themicrobiological attributes of 8 wild edible mushrooms (Agrocybe cylindracea, Amanita cecilae, Boletus reticulatus, Coprinus comatus,Cantharellus cibarius, Lactarius deliciosus, Suillus collinitus and Tricholoma myomyces) collected fromdifferent parts of Anatolia, Turkey. In order to determine the microbiologicaland hygienic situation, E.coliO157:H7, Listeria monocytogenes, yeastand molds, total mesophilic aerobic bacteria count, total coliforms, lacticacid bacteria, Salmonella spp., Staphylococcus aureus and Clostridium botulinum were investigatedfor mushroom species. According to obtained data, microbiological and hygieniccharacteristics of wild edible mushrooms are acceptable.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • Visualization of Human Kidney Embryonic Cells by Acoustic Microscopy

    • Authors: Bükem Bilen; Nural Pastaci Ozsobaci, Fatma Ates Alkan, Mehmet Burcin Unku
      Abstract: The aim of our study is toevaluate the capability of acoustic microscopy with a high frequency transducerfor visualization of cells. Human kidney embryonic (HEK293) cells were observedby scanning acoustic microscope (SAM). HEK293 cells cultured on cover glasseswere kept in cell culture plates. A transducer with 320 MHz center frequencyand a spot size of 4.0 µm was incorporated into SAM. Two-dimensional acousticimages were obtained successfully to identify the morphology and the acousticproperties of HEK293 cells and the acoustic impedance of HEK293 cells wasmeasured as 1.65 ±0.02 MRayl. The same cells on cover glasses were observed also with invertedmicroscope. The results in this study indicate that scanning acousticmicroscopy can be used for the determination of elastic properties of cells,therefore for cellular mapping and molecular imaging, since it can create verysharp images of HEK293 cells with a high frequency transducer.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • Aircraft Maintenance Technical Education: A Research on Professional Exams

    • Authors: Savaş Selahattin Ateş; Haşim Kafalı, Hasan Lik
      Abstract: Aircraft maintenancetechnician is a profession that needs to be licensed according to internationalaviation organizations. Aircraft Maintenance Training standards are awardedaccording to the standards set by EASA Part 66/ 147 as determined by the EuropeanAviation Agency (EASA). It has been published in SHY66/ 147 by the DirectorateGeneral of Civil Aviation (DGCA) in Turkey, which contains documents similar toEASA. Aircraft Maintenance Technician examinations (SHY66 Module Exams) can becarried out by SHY147 Basic Training Institutions which is authorized by theDGCA. DGCA has granted Anadolu University as the authority to make exams inTurkey. The study was carried out in order to determine the exam systemperceptions of candidates who entered the SHY66 Module Examinations, whichprovides Air Vehicle Maintenance Training in Turkey. In the first part of thestudy, with international and national standards for aircraft techniciantraining was provided with literature. In the second part, survey dimensionsdeveloped to measure the test system perception are explained. In the thirdpart, the questionnaire designed to determine the perceptions of the candidatesof the aircraft maintenance technicians who entered SHY66 Module Examinationwas analyzed. The survey was completed by 506 technician candidates. With theresults of the analysis, suggestions have been made to develop examinations forSHY66 Module Examinations.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • An Approach to Estimate Aircraft Fuel Consumption for the Descent Phase

    • Authors: Özlem Şahin; Çerkez Ağayeva
      Abstract: In this study, the static(based on Base of Aircraft Data) and the dynamic aircraft fuel consumptionmodels are constructed for the descent phase. Therefore, two flighttrajectories, from Istanbul to Frankfurt (LTBA- EDDF) and from Los Angeles toNew York (KLAX-KJFK), are chosen in order to analyze the appropriaterelationships between the different parameters such as altitude, speed andtime. A medium range aircraft is taken into consideration while developinglinear and quadratic models. For LTBA- EDDF, fuel consumption as 200 kg, 193,89kg and 193,58 kg are found for BADA, linear and quadratic models, respectively.It corresponds to about a 3 % difference from BADA. Furthermore, for KLAX-KJFK,approximately a 5% difference is obtained.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • Comparative Performance Analysis of Techniques for Automatic Drug Review
           Classification

    • Authors: Alper Kürşat Uysal
      Abstract: This study analyses the effectiveness of six textfeature selection methods for automatic classification of drug reviews writtenin English using two different widely-known classifiers namely Support VectorMachines (SVM) and naïve Bayes (NB). In the study, a recently published publicdataset namely Druglib including drug reviews in English was utilized in theexperiments. For evaluation, Micro-F1 and Macro-F1 success measures were used.Also, 3-fold cross-validation is preferred to perform a fair evaluation. The featureselection methods used in the study are Distinguishing Feature Selector (DFS), InformationGain (IG), chi-square (CHI2), Discriminative Features Selection (DFSS), ImprovedComprehensive Measurement Feature Selection (ICMFS), and Relative DiscriminationCriterion (RDC). However, experiments were performed using two settings inwhich stemming was applied and not applied. Experiments indicated that ICMFSfeature selection method is generally superior to the other feature selectionmethods according to the overall highest Micro-F1 and Macro-F1 scores achievedon drug reviews. While the highest Micro-F1 score was achieved with thecombination of NB classifier and ICMFS feature selection method, the highestMacro-F1 score was achieved with the combination of NB classifier and DFSSfeature selection method. The highest Micro-F1 and Macro-F1 scores were achievedfor the cases that stemming algorithm was not applied.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
  • Synthesis and Usage of Active Modified Zn-Zeolite as an Antibacterial
           Agent

    • Authors: Candan akca Akca; Ayşegül Ekmekçi Körlü, Mustafa Ateş
      Abstract: Natural zeolites are one of the most examined natural minerals. By meansof new studies conducted on zeolites, new areas of usage are being discoveredday by day. It is possible to produce modified zeolites that having manyvariable functions by using the ion exchange capability of zeolite. In thisstudy 100% cotton fabrics was used in the trials. The natural zeolite, used inthe trials, was provided from Enli Madencilik A.Ş. and originated from theManisa-Gördes region. The manufacturing of Zn-Zeolite was performed. And thenthe Zn-Zeolite were applied to cotton fabrics. The characteristics of thecotton fabrics treated with zinc-loaded antibacterial zeolite are analyzed inthis article.
      PubDate: Mon, 31 Dec 2018 00:00:00 +030
       
 
JournalTOCs
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762
 


Your IP address: 44.192.27.11
 
Home (Search)
API
About JournalTOCs
News (blog, publications)
JournalTOCs on Twitter   JournalTOCs on Facebook

JournalTOCs © 2009-