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  Subjects -> ENGINEERING (Total: 2450 journals)
    - CHEMICAL ENGINEERING (208 journals)
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    - ELECTRICAL ENGINEERING (116 journals)
    - ENGINEERING (1288 journals)
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ENGINEERING (1288 journals)                  1 2 3 4 5 6 7 | Last

Showing 1 - 200 of 1205 Journals sorted alphabetically
3 Biotech     Open Access   (Followers: 8)
3D Research     Hybrid Journal   (Followers: 21)
AAPG Bulletin     Hybrid Journal   (Followers: 8)
AASRI Procedia     Open Access   (Followers: 15)
Abstract and Applied Analysis     Open Access   (Followers: 3)
Aceh International Journal of Science and Technology     Open Access   (Followers: 5)
ACS Nano     Hybrid Journal   (Followers: 296)
Acta Geotechnica     Hybrid Journal   (Followers: 7)
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 7)
Acta Polytechnica : Journal of Advanced Engineering     Open Access   (Followers: 3)
Acta Scientiarum. Technology     Open Access   (Followers: 3)
Acta Universitatis Cibiniensis. Technical Series     Open Access  
Active and Passive Electronic Components     Open Access   (Followers: 7)
Adaptive Behavior     Hybrid Journal   (Followers: 11)
Adıyaman Üniversitesi Mühendislik Bilimleri Dergisi     Open Access  
Adsorption     Hybrid Journal   (Followers: 4)
Advanced Engineering Forum     Full-text available via subscription   (Followers: 9)
Advanced Journal of Graduate Research     Open Access  
Advanced Science     Open Access   (Followers: 5)
Advanced Science Focus     Free   (Followers: 5)
Advanced Science Letters     Full-text available via subscription   (Followers: 10)
Advanced Science, Engineering and Medicine     Partially Free   (Followers: 7)
Advanced Synthesis & Catalysis     Hybrid Journal   (Followers: 17)
Advances in Calculus of Variations     Hybrid Journal   (Followers: 4)
Advances in Catalysis     Full-text available via subscription   (Followers: 5)
Advances in Complex Systems     Hybrid Journal   (Followers: 7)
Advances in Engineering Software     Hybrid Journal   (Followers: 28)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 16)
Advances in Fuzzy Systems     Open Access   (Followers: 5)
Advances in Geosciences (ADGEO)     Open Access   (Followers: 14)
Advances in Heat Transfer     Full-text available via subscription   (Followers: 21)
Advances in Human Factors/Ergonomics     Full-text available via subscription   (Followers: 22)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 9)
Advances in Natural Sciences: Nanoscience and Nanotechnology     Open Access   (Followers: 29)
Advances in Nonlinear Analysis     Hybrid Journal  
Advances in Operations Research     Open Access   (Followers: 12)
Advances in OptoElectronics     Open Access   (Followers: 6)
Advances in Physics Theories and Applications     Open Access   (Followers: 16)
Advances in Polymer Science     Hybrid Journal   (Followers: 45)
Advances in Porous Media     Full-text available via subscription   (Followers: 5)
Advances in Remote Sensing     Open Access   (Followers: 49)
Advances in Science and Research (ASR)     Open Access   (Followers: 6)
Aerobiologia     Hybrid Journal   (Followers: 3)
African Journal of Science, Technology, Innovation and Development     Hybrid Journal   (Followers: 6)
AIChE Journal     Hybrid Journal   (Followers: 35)
Ain Shams Engineering Journal     Open Access   (Followers: 5)
Akademik Platform Mühendislik ve Fen Bilimleri Dergisi     Open Access   (Followers: 1)
Al-Nahrain Journal for Engineering Sciences     Open Access  
Alexandria Engineering Journal     Open Access   (Followers: 1)
AMB Express     Open Access   (Followers: 1)
American Journal of Applied Sciences     Open Access   (Followers: 26)
American Journal of Engineering and Applied Sciences     Open Access   (Followers: 10)
American Journal of Engineering Education     Open Access   (Followers: 11)
American Journal of Environmental Engineering     Open Access   (Followers: 16)
American Journal of Industrial and Business Management     Open Access   (Followers: 25)
Annals of Combinatorics     Hybrid Journal   (Followers: 4)
Annals of Pure and Applied Logic     Open Access   (Followers: 3)
Annals of Regional Science     Hybrid Journal   (Followers: 7)
Annals of Science     Hybrid Journal   (Followers: 7)
Antarctic Science     Hybrid Journal   (Followers: 1)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 2)
Applicable Analysis: An International Journal     Hybrid Journal   (Followers: 1)
Applied Catalysis A: General     Hybrid Journal   (Followers: 6)
Applied Catalysis B: Environmental     Hybrid Journal   (Followers: 20)
Applied Clay Science     Hybrid Journal   (Followers: 6)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 13)
Applied Magnetic Resonance     Hybrid Journal   (Followers: 4)
Applied Nanoscience     Open Access   (Followers: 8)
Applied Network Science     Open Access   (Followers: 3)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 5)
Applied Physics Research     Open Access   (Followers: 5)
Applied Sciences     Open Access   (Followers: 3)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 5)
Arab Journal of Basic and Applied Sciences     Open Access  
Arabian Journal for Science and Engineering     Hybrid Journal   (Followers: 5)
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 5)
Archives of Foundry Engineering     Open Access  
Archives of Thermodynamics     Open Access   (Followers: 9)
Arkiv för Matematik     Hybrid Journal   (Followers: 1)
ASEE Prism     Full-text available via subscription   (Followers: 3)
Asia-Pacific Journal of Science and Technology     Open Access  
Asian Engineering Review     Open Access  
Asian Journal of Applied Science and Engineering     Open Access   (Followers: 1)
Asian Journal of Applied Sciences     Open Access   (Followers: 2)
Asian Journal of Biotechnology     Open Access   (Followers: 9)
Asian Journal of Control     Hybrid Journal  
Asian Journal of Current Engineering & Maths     Open Access  
Asian Journal of Technology Innovation     Hybrid Journal   (Followers: 8)
Assembly Automation     Hybrid Journal   (Followers: 2)
at - Automatisierungstechnik     Hybrid Journal   (Followers: 1)
ATZagenda     Hybrid Journal  
ATZextra worldwide     Hybrid Journal  
Australasian Physical & Engineering Sciences in Medicine     Hybrid Journal   (Followers: 1)
Australian Journal of Multi-Disciplinary Engineering     Full-text available via subscription   (Followers: 2)
Automotive Experiences     Open Access  
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 9)
Avances en Ciencias e Ingeniería     Open Access  
Balkan Region Conference on Engineering and Business Education     Open Access   (Followers: 1)
Bangladesh Journal of Scientific and Industrial Research     Open Access  
Basin Research     Hybrid Journal   (Followers: 5)
Batteries     Open Access   (Followers: 6)
Bautechnik     Hybrid Journal   (Followers: 1)
Bell Labs Technical Journal     Hybrid Journal   (Followers: 28)
Beni-Suef University Journal of Basic and Applied Sciences     Open Access   (Followers: 4)
BER : Manufacturing Survey : Full Survey     Full-text available via subscription   (Followers: 1)
BER : Motor Trade Survey     Full-text available via subscription  
BER : Retail Sector Survey     Full-text available via subscription   (Followers: 1)
BER : Retail Survey : Full Survey     Full-text available via subscription   (Followers: 1)
BER : Survey of Business Conditions in Manufacturing : An Executive Summary     Full-text available via subscription   (Followers: 3)
BER : Survey of Business Conditions in Retail : An Executive Summary     Full-text available via subscription   (Followers: 3)
Beyond : Undergraduate Research Journal     Open Access  
Bhakti Persada : Jurnal Aplikasi IPTEKS     Open Access  
Bharatiya Vaigyanik evam Audyogik Anusandhan Patrika (BVAAP)     Open Access   (Followers: 1)
Bilge International Journal of Science and Technology Research     Open Access  
Biofuels Engineering     Open Access   (Followers: 1)
Biointerphases     Open Access   (Followers: 1)
Biomaterials Science     Full-text available via subscription   (Followers: 11)
Biomedical Engineering     Hybrid Journal   (Followers: 15)
Biomedical Engineering     Hybrid Journal   (Followers: 1)
Biomedical Engineering and Computational Biology     Open Access   (Followers: 13)
Biomedical Engineering Letters     Hybrid Journal   (Followers: 5)
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 21)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 37)
Biomedical Engineering: Applications, Basis and Communications     Hybrid Journal   (Followers: 5)
Biomedical Microdevices     Hybrid Journal   (Followers: 8)
Biomedical Science and Engineering     Open Access   (Followers: 4)
Biomicrofluidics     Open Access   (Followers: 5)
BioNanoMaterials     Open Access   (Followers: 2)
Biotechnology Progress     Hybrid Journal   (Followers: 40)
Bitlis Eren University Journal of Science and Technology     Open Access  
Boletin Cientifico Tecnico INIMET     Open Access  
Botswana Journal of Technology     Full-text available via subscription   (Followers: 1)
Boundary Value Problems     Open Access   (Followers: 1)
Brazilian Journal of Science and Technology     Open Access   (Followers: 2)
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 12)
Bulletin of Canadian Petroleum Geology     Full-text available via subscription   (Followers: 13)
Bulletin of Engineering Geology and the Environment     Hybrid Journal   (Followers: 14)
Bulletin of the Crimean Astrophysical Observatory     Hybrid Journal  
Cahiers Droit, Sciences & Technologies     Open Access  
Calphad     Hybrid Journal   (Followers: 2)
Canadian Geotechnical Journal     Hybrid Journal   (Followers: 31)
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 44)
Case Studies in Engineering Failure Analysis     Open Access   (Followers: 6)
Case Studies in Thermal Engineering     Open Access   (Followers: 6)
Catalysis Communications     Hybrid Journal   (Followers: 6)
Catalysis Letters     Hybrid Journal   (Followers: 2)
Catalysis Reviews: Science and Engineering     Hybrid Journal   (Followers: 7)
Catalysis Science and Technology     Free   (Followers: 8)
Catalysis Surveys from Asia     Hybrid Journal   (Followers: 3)
Catalysis Today     Hybrid Journal   (Followers: 7)
CEAS Space Journal     Hybrid Journal   (Followers: 2)
Cellular and Molecular Neurobiology     Hybrid Journal   (Followers: 3)
Central European Journal of Engineering     Hybrid Journal  
Chaos : An Interdisciplinary Journal of Nonlinear Science     Hybrid Journal   (Followers: 3)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 3)
Chinese Journal of Catalysis     Full-text available via subscription   (Followers: 2)
Chinese Journal of Engineering     Open Access   (Followers: 2)
Chinese Science Bulletin     Open Access   (Followers: 1)
Ciencia e Ingenieria Neogranadina     Open Access  
Ciencia en su PC     Open Access   (Followers: 1)
Ciencia y Tecnología     Open Access  
Ciencias Holguin     Open Access   (Followers: 3)
CienciaUAT     Open Access   (Followers: 1)
Cientifica     Open Access  
CIRP Annals - Manufacturing Technology     Full-text available via subscription   (Followers: 11)
CIRP Journal of Manufacturing Science and Technology     Full-text available via subscription   (Followers: 13)
City, Culture and Society     Hybrid Journal   (Followers: 22)
Clean Air Journal     Full-text available via subscription   (Followers: 1)
Clinical Science     Hybrid Journal   (Followers: 9)
Coal Science and Technology     Full-text available via subscription   (Followers: 3)
Coastal Engineering     Hybrid Journal   (Followers: 11)
Coastal Engineering Journal     Hybrid Journal   (Followers: 6)
Coatings     Open Access   (Followers: 4)
Cogent Engineering     Open Access   (Followers: 3)
Cognitive Computation     Hybrid Journal   (Followers: 4)
Color Research & Application     Hybrid Journal   (Followers: 3)
COMBINATORICA     Hybrid Journal  
Combustion Theory and Modelling     Hybrid Journal   (Followers: 14)
Combustion, Explosion, and Shock Waves     Hybrid Journal   (Followers: 15)
Communications Engineer     Hybrid Journal   (Followers: 1)
Communications in Information Science and Management Engineering     Open Access   (Followers: 4)
Communications in Numerical Methods in Engineering     Hybrid Journal   (Followers: 2)
Components, Packaging and Manufacturing Technology, IEEE Transactions on     Hybrid Journal   (Followers: 28)
Composite Interfaces     Hybrid Journal   (Followers: 7)
Composite Structures     Hybrid Journal   (Followers: 291)
Composites Part A : Applied Science and Manufacturing     Hybrid Journal   (Followers: 222)
Composites Part B : Engineering     Hybrid Journal   (Followers: 261)
Composites Science and Technology     Hybrid Journal   (Followers: 202)
Comptes Rendus Mécanique     Full-text available via subscription   (Followers: 2)
Computation     Open Access   (Followers: 1)
Computational Geosciences     Hybrid Journal   (Followers: 17)
Computational Optimization and Applications     Hybrid Journal   (Followers: 8)
Computational Science and Discovery     Full-text available via subscription   (Followers: 2)
Computer Applications in Engineering Education     Hybrid Journal   (Followers: 8)
Computer Science and Engineering     Open Access   (Followers: 19)
Computers & Geosciences     Hybrid Journal   (Followers: 31)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 8)
Computers and Electronics in Agriculture     Hybrid Journal   (Followers: 5)
Computers and Geotechnics     Hybrid Journal   (Followers: 11)
Computing and Visualization in Science     Hybrid Journal   (Followers: 7)

        1 2 3 4 5 6 7 | Last

Journal Cover
Bilge International Journal of Science and Technology Research
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2587-0742 - ISSN (Online) 2587-1749
Published by DergiPark Homepage  [118 journals]
  • Numerical Analyses of the Effects of Fuel Load Variation on Combustion
           Performance of a Pellet Fuelled Boiler

    • Authors: Bilal Sungur; Bahattin Topaloglu
      Abstract: Domesticand industrial energy requirements since the beginning of industrial revolutionhave been largely met by fossil fuels. This leads to a continuous increase inthe Earth's atmosphere of carbon dioxide and other harmful components. Alsofossil energy resources decreasing day by day and scientists have turned to newresearch. In this context alternative energy sources have an important role toreduce dependence on fossil fuels. One of the alternative energy sources isbiomass and pellet fuel is one of them. In this study, combustioncharacteristics of pellet fuel in a model smoke tube boiler at differentloading conditions were investigated numerically. As a Computational FluidDynamic (CFD) program FLUENT package program was used. Calculations wereperformed at two dimensional conditions. According to various loadingconditions, temperature and stream function contours, velocity vectors, exhaustgas temperatures and efficiencies were investigated and results were discussed.
      PubDate: Sun, 25 Mar 2018 00:00:00 +030
       
  • Infrared and NMR Spectral Analyses and Computational Studies of
           2-amino-3-methylbenzoic acid

    • Authors: Muhammet Hakkı Yıldırım
      Abstract: Detailed infrared spectrum in gas phase, NMR spectra analyses and theoretical studies of 2-amino-3-methylbenzoic acid were performed with DFT/B3LYP/6-311G+(2d,p) level of method in Gaussian 09W. Ground state molecular geometries of monomeric and dimeric structures were calculated in vacuum and compared to the experimental XRD results. Potential energy surface graphics of the proton transfer and torsional tautomerism process were obtained. Also, HOMA aromaticity chancing graphics were drowned in mentioned process. The IR band assignments and the decompositions of potential energy for each band were done using theoretical calculations. 1H and 13C NMR chemical shifts analyses were performed by using GIAO NMR calculations with SCRF solvent model.
      PubDate: Sun, 25 Mar 2018 00:00:00 +030
       
  • Changes in Quality Parameters of Deep Fat Fried Carrot Slices Under The
           Effect of Ultrasound Assisted Pre-Drying Process

    • Authors: Erkan Karacabey; Merve Seçil Turan
      Abstract: Oil absorption ispartially associated to the initial moisture content of frying material, thuscontrolling the moisture level could result in decreased oil absorption duringfrying with accompanying changes in other physical properties. As a result, inthe current study, in order to figure out the changes in moisture and oilcontents of fried carrot slices, the effects of process parameters ofultrasound assisted pre-drying was examined. Additionally texture and colorpreferences were studied. Any reduction in oil absorption was achieved byU/S-predrying, whereas it was observed that there was an increase in brightness(L*) value of carrot slices as well as generally a decrease in a* valuescompared to the control group. Effect of temperature was found to besignificant over a* and L* values for all power levels. Additionally, nostatistically significant change was observed for the textural properties withapplied ultrasound power levels.
      PubDate: Sun, 25 Mar 2018 00:00:00 +030
       
  • Numerical Computation of Fission-Product Poisoning Build-up and Burn-up
           Rate in a Finite Cylindrical Nuclear Reactor Core

    • Authors: Mathew Ademola Jayeola; Musbaudeen Kewulere Fasasi, Adebimpe Amos Amosun, Ayodeji Olalekan Salau, Babatunde Michael Ojo
      Abstract: All fission products are classified as reactor poisons because they absorb neutrons to some extent, most of which buildup slowly as the fuel burns up and eventually constitutes a long term reactivity effect in the core. Amidst the numerous fission fragments produced per fission, the presence of Xenon-135 and Samarium-149 has the greatest effect on a reactor core multiplication factor because of their large absorption cross-sections. In this study, we present a modified one-group time independent neutron diffusion equation using the method of Eigen functions and also provided an algorithm to calculate the temperature variations of the neutron fluxes. The solution obtained from the diffusion equation was used to determine the initial thermal neutron flux needed for the reactor startup. The four basic fission-product poisoning buildup and burn-up rate equations were solved using direct integration method and constant flux approximation over a particular time interval. Furthermore, a computer algorithm called Java code for Fission-Product Poisioning Build-up and Burn-up (Jac-FPPB) code was designed to calculate the temperature variations of the neutron fluxes, fission -isotopes cross sections and the atom concentrations of the fission products over a given time interval. The result from Jac-FPPB code showed that the neutron fluxes and neutron energies increase as the temperature of the fuel increases. In addition, the computed atom concentrations of each fission isotopes at any given time interval showed that the isotopes increasingly build up steadily at the initial time interval and rises to a constant level where the buildup rate of the isotopes approximately equals its burn up rate. This study concluded that the designed algorithm (JaC-FPBB code) proved efficient as it could compute the build-up and burn-up rates for the two important fission fragments in a nuclear reactor core. The code is easily accessible and could serve as a tool for the development of nuclear energy in developing countries, especially Nigeria.
      PubDate: Sun, 25 Mar 2018 00:00:00 +030
       
  • Sapwood Area Related to Tree Size, Tree Age, and Leaf Area Index in Cedrus
           libani

    • Authors: Aylin Güney
      Abstract: Sapwoodincludes the water conducting part of the stem which transports water andminerals from roots to leaves. Studies using sap flow gauges have to determinethe area of the sapwood in order to scale measured sap flow densities to thetree or stand level. The aim of this study was to investigate the relationshipbetween sapwood area at breast height and other tree parameters which are easyto measure of the montane Mediterranean conifer Cedrus libani, including a total number of 92 study trees ofdifferent size and age. The study was conducted at four different standssituated between 1000 and 2000 m altitude in the Elmalı Cedar Research Forestof Antalya, SW-Turkey. Sapwood area of the sample trees was determined byextracting two tree cores from opposite directions of the stem using anincrement borer and by visually assessing the wet part of the core. Parametersmeasured besides sapwood area were diameter at breast height, stem radiuswithout bark, sapwood depth, tree basal area, tree height, tree age, and projectedcrown area. Furthermore, at each stand, leaf area index (LAI) was determinedusing hemispherical photographs of the forest canopy. The most significantrelationship was found between stem radius without bark and sapwood area (R2:0.94) followed by tree basal area and sapwood area (R2: 0.90).Although it was the second best predictor, tree basal area should be used toestimate sapwood area when estimating stand transpiration since it can bemeasured faster and without giving damage to the tree. Mean sapwood area and meansite-specific LAI showed a significant positive correlation. The findings ofthis study can be used in ecophysiological studies when transpiration rates of C. libani are measured using sap flowgauges.
      PubDate: Sun, 25 Mar 2018 00:00:00 +030
       
  • An Assessment of Shallow Groundwater Wells In An Agricultural And Coastal
           Area In Göksu Delta, Turkey

    • Authors: Esra Deniz Güner; Senem Tekin, Galip Seçkin
      Abstract: The GöksuDelta of Turkey is an alluvial delta with intense agricultural activity and hasgreat ecological and economic significance. Water samples were collectedmonthly from 24 wells in the study area, and 13 water quality parameters wereexamined. The objective of the study was also to determination the waterquality in wells of the Göksu Delta and assess levels of salinisation in theregion. Piper diagrams and the Geographic Information Systems (GIS) was used togenerate ionic ratios to evaluate water quality in the study area in anefficient  manner. Overall, thegroundwater examined has medium levels of salinity and low sodium content.  The ncrease in groundwater salinity andamounts of Na+ and Cl- are indicators of saltwaterintrusion. Rock dissolution and ion exchange were also found to play an activerole in the region. All of these factors affect the sustainability of thefreshwater aquifers and lower their quality for wildlife species.
      PubDate: Sun, 25 Mar 2018 00:00:00 +030
       
  • A Study on the Classification of Woody Vegetation in Forest Ecology
           (Isparta- Yenişarbademli Case)

    • Authors: Esra Özge Kurt; Mehmet Güvenç Negiz
      Abstract: This studywas carried out to classify woody vegetation in Yenişarbademli forest areas. Thevegetation classification is important to biological diversity conservation andsustainability. In the study, 103 sample plots 20 x 20 m size were taken forinventory. In the study area, woody plant species and environmental factorswere recorded in the inventory. Cluster analysis and two way indicator speciesanalysis (TWINSPAN) were performed to distinguish vegetation groups in thestudy. While cluster analysis and two way indicator species analysis werecarried out, present/ absence values of plant species were used. Because theindicator species can not be determined by the clustering analysis,Interspecific correlation analysis is applied. Multi-response permutationprocedures (MRPP) analysis was applied to the analysis results to decide group distinctions.The results obtained from MRPP analysis showed that the best option wasprovided with TWINSPAN used five indicatory species. As a result of TWINSPANused five indicatory species, THYSAM, CIRARV, BERVUL, JUNOXY and EUPSPP specieswere identified as discriminating species. The first group represented 51 andthe second group represented 52 sample plots. Discriminating species weredetermined to be species located in high elevation of the study area. As aresult of the analysis, the species in the first group is positive indicatorswhile in the second group is negative indicators. As a result, elevation is themost important variable when discriminating species group and indicator speciesare identified.
      PubDate: Sun, 25 Mar 2018 00:00:00 +030
       
  • Experimental (FT-IR, Raman and NMR) and Theoretical (B3LYP, B3PW91, M06-2X
           and CAM-B3LYP) Analyses of P-Tert-Butylphenyl Salicylate

    • Authors: Nuri Öztürk; Tuba Özdemir, Yelda Bingöl Alpaslan, Halil Gokce, Gökhan Alpaslan
      Abstract: The spectroscopic investigations ofp-tert-butylphenyl salicylate (C17H18O3)molecule were performed using 13C and 1H NMR chemicalshifts, FT-IR and Raman spectroscopies. Molecular geometric optimizations,vibrational frequencies, Carbon-13 and Proton NMR chemical shifts (in vacuumand chloroform), HOMO-LUMO properties, natural bond orbital (NBO) analysis,nonlinear optical properties and thermodynamic parameters of p-tert-butylphenylsalicylate molecule was studied using B3LYP, B3PW91, M06-2X and CAM-B3LYPfunctionals in DFT method at the 6-311++G(d,p) basis set. NBO analysis wascarried out to investigate the intramolecular hyrogen bonding (O-H...O)in the title molecule. Some of the molecular properties such as ionizationpotential (I), electron affinity (A), chemical hardness (h), chemical softness (z), electronegativity (χ), chemical potential (μ)and electrophilicity index (w) parameters were determined viaHOMO and LUMO energies of the title molecule. Also, quantum chemicalcomputations were performed to determine the dipole moment (µtotal), mean polarizability(α), anisotropy of the polarizability(∆α) and first hyperpolarizability (β0) values. Thermochemicalproperties of the title molecule were investigated with the aforementionedcalculation levels. The recorded experimental spectroscopic results were foundto be in good agreement with the computed data.
      PubDate: Sun, 25 Mar 2018 00:00:00 +030
       
  • Chemical Characterization and Biological Activity Evaluation of Essential
           Oils of Achillea Sipikorensis, an Endemic Plant from Turkey

    • Authors: Nuraniye Eruygur; Özge Çevik, Mehmet Ataş, Mehmet Tekin
      Abstract: The AchilleaL. (Asteraceae) are known all over the world and used widely by local people asfolk herbal medicine.  The species arereported to have anti-inflammatory, antioxidant, diuretic, antispasmodic vs.activities and have been used for the treatment of various ailments in Turkishtraditional medicine. This work it the first study on chemical composition andbiological activity of essential oil obtained from endemic plant- A. sipikorensis Hausskn. Et. Bornmevaluated for their antiradical, antimicrobial and cytotoxic activities. GC/MSanalyses showed that cis- chrysanthenol (14.5%), 1, 8-cineol (10.9%),caryophyllene oxide (8.5%), borneol (8.2%), and camphor (6.1%) were the majorconstituents in the essential oil from aerial part of the plant. The essentialoil demonstrated good antioxidant, antimicrobial and cytotoxic activities.
      PubDate: Sun, 25 Mar 2018 00:00:00 +030
       
  • Real-time Parental Voice Recognition System For Persons Having Impaired
           Hearing

    • Authors: Mete Yağanoğlu; Cemal Köse
      Abstract: Persons having impaired hearing do not live a comfortable life becausethey can’t hear sounds when they are asleep or alone at home. In this study, aparental voice recognition system was proposed for those people. Persons havingimpaired hearing are informed by vibration about which one of their parents isspeaking. By this means, the person having impaired hearing real timelyperceives who is calling or who is speaking to him. The wearable device that wedeveloped can real timely perceive parental voice very easily, and transmits itto person having impaired hearing, while he/she is asleep or at home. Awearable device has been developed for persons having impaired hearing to useeasily at home environment. Our device is placed on user’s back, and just a ring-sizedvibration motor is attached to the finger of person. Our device consists ofRaspberry Pi, usb sound card, microphone, power supply and vibration motor.First of all, the sound is received by a microphone, and sampling is made.According to the Nyquist Theorem, 44100 samples are made per second.Normalization during preprocessing phase, Mel Frequency Cepstral Coefficients(MFCC) during feature extraction stage, k nearest neighbor (knn) during theclassification phase were used. Statistical or Z-score normalization was usedin the pre-processing phase. By means of normalization of the data, it isensured that each parameter in the training input set contributes equally tothe prediction of the model. MFCC is one of the feature extraction methods thatare frequently used in voice recognition applications. MFCC represents theshort-time power spectrum of the audio signal, and models the manner ofperception of human ear. Knn is an educational learning algorithm, and its aimis to classify the existing learning data when a new sampling arrives. Thesound data received via microphone were estimated through preprocessing,feature extraction and classification stages, and the person having impairedhearing was informed through real time vibrations about to whom this voicebelongs. This study was tested on 2 deaf, 3 normal hearing persons. The ears ofnormal hearing persons were covered with a earphone that gives out loud noise.Persons having impaired hearing estimated their mothers’ voice by 76%, andfathers’ voice by 81% accuracy in real-time tests. The success rate decreasesdue to the noise of environment especially while watching tv.  In the tests performed while these personsare asleep, a person having impaired hearing perceives his/her mother’s voice by78%, and   father’s voice by 83%accuracy. In this study it was aimed for persons having impaired hearing toperceive their parents’ voice and accordingly have a more prosperous standardof living.
      PubDate: Sun, 25 Mar 2018 00:00:00 +030
       
  • Investigation In Electrical And Thermal Efficiency Of An Active Cooling
           Photovoltaic Thermal (Pv/T) Solar System With Taguchi Method

    • Authors: Gökhan Ömeroğlu
      Abstract: In this study, an attempt was made to optimize the default parameters in various experiments to improve the performance and heat transfer properties of the flat plate solar collector using the Taguchi method. An experimental investigation was carried out using air as working fluid at certain speeds (3.3, 3.9 & 4.5 m/s) on a PV/T collector. In this study, experiments were conducted to investigate the effects of heat transfer characteristics on performance, and the results are evaluated, since the above parameters have a great effect on the performance and heat transfer properties of the flat plate solar collector. Test Design for experiments were the Taguchi L36 Orthogonal Array Design. Experiments were carried out using the results of the outlet temperature of the air, the electrical and thermal efficiency of the collector, and the design of experiments by Taguchi method. The results showed that the selected parameters in this study had a significant effect on the selected responses and the verification results showed a significant improvement in the performance characteristics of the flat plate solar collector. The obtained results were analyzed in the ANSYS fluent program.
      PubDate: Sun, 25 Mar 2018 00:00:00 +030
       
  • Wildlife Diversity in Reed beds Around Beyşehir Lake

    • Authors: Ahmet Mert; Ahmet Acarer
      Abstract: Thisstudy was carried out to reveal the relation between species diversitycalculated by species number data of some mammals and reed beds in northwest ofBeyşehir Lake. The study area, which is approximately 1875 ha, is divided intoa total of 75 grids measuring 500 x 500 m size. Sign, faeces and tracks of wildmammals were recorded for each grid in the spring and autumn of 2016.Indications of nine wild mammal were detected in 172 points in spring and 290points in autumn (Jungle cat, Lynx, Wolf, Fox, Coyote, Wild boar, Wild hare,Badger and Beech marten).The Shannon-Wiener diversity index was calculated foreach grid using the species number data obtained for spring and autumn.According to the Shannon-Wiener diversity index calculation results, themapping process was performed by inputting the calculated value of the grid.The total of the data from two period is used in the Shannon-Wiener diversitymap of the all area. Shannon-Wiener diversity of all mammals was obtained asHT:1,581. When compared to the seasons, this value was calculated as Hİ=1,418in spring and HS=1,56 in autumn
      PubDate: Sun, 25 Mar 2018 00:00:00 +030
       
 
 
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