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    - ENGINEERING (1176 journals)
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ENGINEERING (1176 journals)            First | 1 2 3 4 5 6 7 8 | Last

Data Handling in Science and Technology     Full-text available via subscription   (Followers: 2)
Design Journal     Full-text available via subscription   (Followers: 18)
Designed Monomers and Polymers     Hybrid Journal   (Followers: 2)
Designs, Codes and Cryptography     Hybrid Journal   (Followers: 8)
Developments in Clay Science     Full-text available via subscription  
Developments in Geotechnical Engineering     Full-text available via subscription   (Followers: 1)
Developments in Mineral Processing     Full-text available via subscription   (Followers: 1)
Diálogos Interdisciplinares     Open Access  
Diamond Light Source Proceedings     Full-text available via subscription  
Digital Signal Processing     Hybrid Journal   (Followers: 9)
Discrete Optimization     Full-text available via subscription   (Followers: 5)
Doct-Us Journal     Open Access  
Documents pour l'histoire des techniques     Open Access   (Followers: 1)
Dyes and Pigments     Hybrid Journal   (Followers: 3)
Dyna     Open Access  
Dynamical Systems: An International Journal     Hybrid Journal   (Followers: 1)
El Hombre y la Máquina     Open Access  
Electromagnetics     Hybrid Journal   (Followers: 1)
Electrophoresis     Hybrid Journal   (Followers: 5)
Elsevier Geo-Engineering Book Series     Full-text available via subscription   (Followers: 2)
Elsevier Ocean Engineering Series     Full-text available via subscription   (Followers: 1)
Embedded Systems Letters, IEEE     Hybrid Journal   (Followers: 23)
Energies     Open Access   (Followers: 2)
Energy and Power Engineering     Open Access   (Followers: 10)
Energy Conversion and Management     Hybrid Journal   (Followers: 8)
Energy Engineering     Full-text available via subscription   (Followers: 9)
Energy for Sustainable Development     Hybrid Journal   (Followers: 9)
Energy Procedia     Open Access   (Followers: 4)
Energy Science & Engineering     Open Access   (Followers: 4)
Energy Science and Technology     Open Access   (Followers: 12)
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects     Hybrid Journal   (Followers: 2)
Energy Sources, Part B: Economics, Planning, and Policy     Hybrid Journal   (Followers: 6)
Energy Systems     Hybrid Journal   (Followers: 11)
ENGEVISTA     Open Access   (Followers: 1)
ENGI : Revista Electrónica de la Facultad de Ingenieria     Open Access  
Engineer : Journal of the Institution of Engineers, Sri Lanka     Open Access  
Engineering     Open Access   (Followers: 2)
Engineering & Technology     Hybrid Journal   (Followers: 19)
Engineering Analysis with Boundary Elements     Hybrid Journal   (Followers: 1)
Engineering Computations     Hybrid Journal   (Followers: 3)
Engineering Economics     Open Access   (Followers: 4)
Engineering Economist, The     Hybrid Journal   (Followers: 2)
Engineering Education     Open Access   (Followers: 1)
Engineering Failure Analysis     Hybrid Journal   (Followers: 41)
Engineering Geology     Hybrid Journal   (Followers: 7)
Engineering International     Open Access  
Engineering Journal     Open Access   (Followers: 1)
Engineering Management Journal     Hybrid Journal   (Followers: 13)
Engineering Management Research     Open Access   (Followers: 4)
Engineering Management Reviews     Open Access   (Followers: 1)
Engineering Optimization     Hybrid Journal   (Followers: 7)
Engineering Science and Technology, an International Journal     Open Access  
Engineering Sciences     Open Access  
Engineering Studies     Hybrid Journal  
Engineering With Computers     Hybrid Journal   (Followers: 5)
Engineering, Technology & Applied Science Research     Open Access  
Entramado     Open Access  
Entropy     Open Access   (Followers: 3)
Environmental & Engineering Geoscience     Full-text available via subscription   (Followers: 2)
Environmental and Ecological Statistics     Hybrid Journal   (Followers: 5)
Environmetrics     Hybrid Journal  
Épités - Épitészettudomány     Full-text available via subscription   (Followers: 1)
EPJ Photovoltaics     Open Access   (Followers: 1)
Épsilon     Open Access  
Ergonomics in Design: The Quarterly of Human Factors Applications     Hybrid Journal   (Followers: 9)
ESAIM: Control Optimisation and Calculus of Variations     Full-text available via subscription  
ESAIM: Mathematical Modelling and Numerical Analysis     Full-text available via subscription   (Followers: 2)
ESAIM: Proceedings     Open Access  
Estuaries and Coasts     Hybrid Journal   (Followers: 6)
European Journal of Combinatorics     Full-text available via subscription   (Followers: 3)
European Journal of Engineering Education     Hybrid Journal   (Followers: 2)
European Journal of Lipid Science and Technology     Hybrid Journal   (Followers: 1)
European Journal of Mass Spectrometry     Full-text available via subscription   (Followers: 10)
European Medical Device Technology     Full-text available via subscription   (Followers: 3)
European Physical Journal - Applied Physics     Full-text available via subscription   (Followers: 5)
European Transport Research Review     Open Access   (Followers: 13)
Evolutionary Intelligence     Hybrid Journal  
Evolving Systems     Hybrid Journal   (Followers: 1)
Exacta     Open Access  
Experimental Techniques     Hybrid Journal   (Followers: 45)
Experiments in Fluids     Hybrid Journal   (Followers: 6)
Fibers and Polymers     Full-text available via subscription   (Followers: 3)
Filtration & Separation     Full-text available via subscription   (Followers: 6)
Finite Fields and Their Applications     Full-text available via subscription   (Followers: 3)
Fire Science Reviews     Open Access   (Followers: 2)
First Monday     Open Access   (Followers: 68)
Flexible Services and Manufacturing Journal     Hybrid Journal   (Followers: 1)
Flow, Turbulence and Combustion     Hybrid Journal   (Followers: 18)
Fluid Dynamics     Hybrid Journal   (Followers: 5)
Fluid Dynamics Research     Full-text available via subscription   (Followers: 7)
Fluid Phase Equilibria     Hybrid Journal   (Followers: 2)
Focus on Catalysts     Full-text available via subscription  
Focus on Pigments     Full-text available via subscription   (Followers: 3)
Focus on Powder Coatings     Full-text available via subscription   (Followers: 3)
Focus on Surfactants     Full-text available via subscription   (Followers: 4)
Food Engineering Reviews     Hybrid Journal   (Followers: 2)
Food Science and Technology     Open Access   (Followers: 2)
Formación Universitaria     Open Access   (Followers: 3)
FORMakademisk     Open Access  
Formal Methods in System Design     Hybrid Journal   (Followers: 6)

  First | 1 2 3 4 5 6 7 8 | Last

Journal Cover   Engineering Journal
  [SJR: 0.269]   [H-I: 16]   [1 followers]  Follow
  This is an Open Access Journal Open Access journal
   ISSN (Print) 0125-8281 - ISSN (Online) 0125-8281
   Published by Chulalongkorn University Homepage  [2 journals]
  • Development and Evaluation of Compact Aquaculture System for the
           Application of Zero Water-Exchange Inland Aquacultures

    • Authors: Akekapot Khammi, Maliwan Kutako, Chayanoot Sangwichien, Kasidit Nootong
      Abstract: This study evaluated the performance of land-based compact aquaculture system integrating fibrous nitrifying biofilters and solid removal unit. The first experiment indicated that the compact aquaculture system with total biofilter length of 6.0 m and single solid separating was able to accommodate aquaculture weight as high as 5.0 kg/m3, which corresponded to nitrogen loading rates of 8.4 mg N/L/day. In the second experiment, more effective solid-liquid separation and good water quality were achieved when solid separating unit was replaced by filtration unit with Japanese mats as filtered media, and cleaning of biofilters and filtration unit was conducted in every 4 days. Next, the compact aquaculture system was employed to cultivate tilapia without water-exchange for 60 days using the described strategies. TAN and nitrite were well below acceptable limit of 1.0 mg N/L; suspended solids varied between 20 and 35 mg SS/L; and harvesting fish weights were 10.4 kg/m3. Fish survival rate at 97% and average growth rate of 3.45 g/day were reported. Finally, solid removal remained the critical factor for successful aquacultures in the compact system even under extensive or semi-intensive aquaculture cultivation, and finally nitrogen mass balance indicated that nitrification-denitrification were main treatment pathways while solid removal only prolonged the activity of nitrifying biofilters.
      PubDate: 2015-04-30
      Issue No: Vol. 19 (2015)
  • Configuration Development of Autothermal Solid Oxide Fuel Cell: A Review

    • Authors: Pannipha Dokmaingam
      Abstract: Solid Oxide Fuel Cell (SOFC) is typically operated at high temperature. Both electricity and heat are generated during operation. Therefore, SOFC can be efficiently designed to integrate the endothermic reformer with the cell for optimizing heated utilization, as called autothermal operation. However, the mismatch between rate of exothermic electrochemical reaction and endothermic reforming reaction is easily resulted in material cracking of those integrated structure. In order to overcome the thermal mismatch limitation, various approaches for autothermal SOFC configurations have been widely developed; these configurations can be classified into 2 main groups including direct internal reforming (as called DIR-SOFC) and indirect internal reforming (as called IIR-SOFC) operations. This review focuses on the technological progress of these various configurations. In detail, computer simulation technique has been applied to study the thermal behavior inside the autothermal SOFC configurations using various primary hydrocarbon fuels. In addition, the advantage and disadvantage on thermal stress reduction of each configuration are also discussed.
      PubDate: 2015-04-30
      Issue No: Vol. 19 (2015)
  • Removal of Yellow20 Dye from Aqueous Solution using Organo-rice Straw:
           Characteristic, Kinetic and Equilibrium Studies

    • Authors: Chakkrit Umpuch
      Abstract: The adsolubilisation of tetradecyltrimethyl ammonium bromide on rice straw as adsorbent termed ‘organo-rice straw’ was developed in this research to enhance the decolorization behavior of yellow20 from aqueous solution. The organo-rice straw was characterized by elemental analysis, BET method, FTIR technique, and SEM images. Batch studies were studied to address various experimental parameters such as contact time, initial solution pH, and initial dye concentration. Results showed that the major contents of yellow20 and organo-rice straw were carbon and hydrogen indicating their hydrophobic natures. The yellow20 uptake on the organo-rice straw was higher than that of the precursor. The equilibrium adsorption was reached within 3.0 h and the amount of yellow20 adsorbed was independent of the pH0. The kinetic data were fitted to pseudo-first order, pseudo-second order, and intraparticle diffusion models. Results imply that adsorption of yellow20 on this adsorbent nicely followed the second order kinetic model and maximum adsorption capacity was found to be 166.55 mg.g-1. Equilibrium isotherms were analyzed by Langmuir, Freundlich, Temkin, and Dubinin-Radushkevtch isotherms. Freundlich isotherm described the isotherm data with high-correlation coefficients. The results of the present study substantiate that organo-rice straw is a potential and active bio-sorbent for the removal of the yellow20.
      PubDate: 2015-04-30
      Issue No: Vol. 19 (2015)
  • Computation of Biomass Combustion Characteristic and Kinetic Parameters by
           using Thermogravimetric Analysis

    • Authors: Wanwisa Rukthong, Phattharanid Thanatawee, Sasithorn Sunphorka, Pornpote Piumsomboon, Benjapon Chalermsinsuwan
      Abstract: In this study, the response surface methodology and simplex-lattice design were applied to investigate the effect of biomass constituents on the kinetics of biomass combustion, important information for process design. The synthetic biomass made from pure cellulose, xylan and Organosolv lignin was used instead of real biomass for this purpose. The combustion process was employed using thermogravimetric analyzer. The results obtained from three different kinetic models including Kissinger-Akahira-Sunose, Ozawa-Flynn-Wall and Analytical Method were provided and compared. According to the analysis of variances (ANOVA), the higher cellulose and hemicellulose fraction provided greater activation energy and frequency factor. The proposed regression models with high R2 coefficient indicated that the predicted kinetic values and experimental data agreed very well. The contour plots generated from the proposed models were also provided in this study. They were used to observe the influence of biomass components on each kinetic parameter.
      PubDate: 2015-04-30
      Issue No: Vol. 19 (2015)
  • Density of Ethyl Acetate-Palm Oil Mixture in Supercritical Condition

    • Authors: Cholada Komintarachat, Ruengwit Sawangkeaw, Somkiat Ngamprasertsith
      Abstract: The non-catalytic interesterification of palm oil in supercritical ethyl acetate in continuous system to produce biofuel is complex to understand thermodynamic properties during extreme condition, particularly density of two reactants. In this study, an indirect procedure for density measurement of palm oil and ethyl acetate mixture in a batch system at high temperature and pressure was experimentally investigated using isochoric method. Its apparatus comprise a constant volume reactor which was individually loaded with a mixture of ethyl acetate and palm oil in different molar ratios (10:1 to 30:1) and global densities (0.26 to 0.53 g/cm3). During temperature increment, the changing of pressure was recorded in real-time to obtain the pressure-temperature relationship. After measuring the change of pressure at various global densities, the pressure-temperature related specific global density diagram was successfully constructed. At high global densities and high molar ratios of ethyl acetate to palm oil, the transition point took place closing to the estimated critical point of the mixture. The results will be further employed as database for accurately residence time calculation in continuous reactor, especially for biofuel production from palm oil in supercritical ethyl acetate.
      PubDate: 2015-04-30
      Issue No: Vol. 19 (2015)
  • A Combined Fuzzy Goal Programming and Big-Bang Big-Crunch Algorithm for
           Workforce Optimisation with Facility Layout Consideration

    • Authors: Desmond E Ighravwe, Sunday Ayoola Oke
      Abstract: Small scale enterprises constitute an important subset of manufacturing economy and the contribution of facility redesign in bridging the performance gaps in small-scale enterprises is necessary for enterprise growth and stability. In this paper, a bi-objective programming-based facility layout design problem is formulated. We minimise workforce costs and maximise efficiency improvement in a layout. We utilised fuzzy goal programming and big-bang big-crunch algorithm in generating a Pareto solution. The model was tested using a small-scale sachet water production enterprise data. Increase in finished goods area was 66.55 % while reduction in total annual distance travelled in the facility was 48.22 % when the proposed layout was compared with existing one. Reduction in annual cost of labour was 16.2 %. The possibility of using work-centres with high number of interrelationship was confirmed using quality function deployment and Hurwicz criterion. The optimal workforce size was found to be 14 workers against the existing workforce strength of 18 workers. The study provides a framework upon which small-scale sachet water production factories can be designed for optimum performance.
      PubDate: 2015-04-30
      Issue No: Vol. 19 (2015)
  • Effect of Periodontal Ligament on Stress Distribution and Displacement of
           Tooth and Bone Structure Using Finite Element Simulation

    • Authors: Thongchai Fongsamootr, Pana Suttakul
      Abstract: Periodontal ligament (PDL) is a thin layer of collagen fiber that can absorb or reduce the transfer of stress from a tooth to the alveolar bone. To understand the function of PDL, stress distributions and displacement over the tooth and bone structure was simulated using Finite Element Analysis (FEA). To evaluate the credibility of FEA simulation, a simple model was created: a simply rod connection consists of tooth bar, PDL layer, and bone bar. It was performed with theoretical analysis and FEA using simulation to compare and validate the results. It was found that the theoretical analysis and FEA produced similar results. Therefrom, FEA was used to predict in the Orthodontics problem. Due to the complexity of dental geometry, the Computed Tomography was used to create the real tooth into the 3-dimensional model. FEA was then applied to study the role of the PDL layer with tooth and bone when realistic dental forces were applied using simulation models with and without PDL. The results showed that the maximum stress was higher and very small displacement in the model without the PDL layer. Thus, the PDL acts as a sustaining pad that decreases and intersperses the stress in the alveolar bone. Furthermore, the soft pad of the PDL layer allows the tooth to move more easily.
      PubDate: 2015-04-30
      Issue No: Vol. 19 (2015)
  • Energy Based Method to Predict Temperature within Rectangular Concrete

    • Authors: Pattamad Panedpojaman, Passagorn Chaiviriyawong
      Abstract: In addition to the prescriptive method used in design, the fire resistance of reinforced concrete structures under various fire scenarios needs to be assessed by combined heat transfer and structural analysis. The available numerical simulations of heat transfer analysis are complicated techniques and require an expert user. To predict temperature within rectangular sections of normal concrete subjected to fire loads in two directions, the energy based method is proposed as an alternative method. The method is based on a pre-determined power function as the temperature profile, and conservation of energy: it can be implemented in a spreadsheet. The analysis of two dimensional heat transfer is approximated by superposition of one-dimensional solutions. Benchmarking against FEM analysis of various sections shows that an exponent 2.6 performs well to predict the temperature. By comparing the temperature prediction with the previous experimental and FEM results, the method is validated. The method is suitable for various monotonically increasing fire curves and various convection and radiation heat transfers. However, the method has its limitations; in particular the lowest temperature in the sections needs to remain less than 0.2 times the highest, or the energy estimated becomes inaccurate. Generally, the method can be used to approximately predict the temperature profile as well as the temperature at the reinforcing location: knowledge of these is necessary for fire safety design.
      PubDate: 2015-04-30
      Issue No: Vol. 19 (2015)
  • An Engineering Evaluation on the Glimpse of Satellite Image Pre-processing
           Utility Tools

    • Authors: Sunitha Abburu, Suresh Babu Golla
      Abstract: The advancement of technology in the area of satellite remote sensing has been generating voluminous amount of satellite images at regular intervals regularly. The satellite image analysis derive very useful, invaluable and essential inputs for various applications such as disaster management, civil aviation, meteorology, ocean observation systems, earth science studies and defense applications, etc. The satellite image analysis technique provides the necessary inputs for image preprocessing systems as a basic prerequisite and essential ingredient. Over the past several years many satellite image preprocessing tools have been developed with various features. The choice of satellite image preprocessing tools basically depend on the purpose of image analysis, the features of satellite image preprocessing tools and the specific need and application. Due to a large number of applications of satellite images, user has a wide ranging choice to select optimally the right preprocessing tool for the right application. Thus, the present study helps in aiding the proper understanding and selection of the various satellite image preprocessing tools and their features for any specific application. To facilitate this scheme, the current study has identified various satellite image preprocessing tools and prominent features of the desired tool. Briefly, the study presents a clear understanding with specific examples on the various available tools and features for the user specific application for the desired satellite images. The various features of the satellite image preprocessing tools have been presented in detail for ready reference, guidance and usage.
      PubDate: 2015-04-30
      Issue No: Vol. 19 (2015)
  • Experimental Investigation of the Fire Resistance of Thin Hollow-Core
           Concrete Slabs with Simple Supports

    • Authors: Thanyawat Pothisiri, Chaiyatorn Kositsornwanee
      Abstract: This paper presents an experimental study on the fire resistance of relatively thin hollow-core concrete slabs with simple supports. A series of fire tests were conducted according to ISO 834 standard on nine hollow-core concrete slab specimens with thickness not exceeding 15 mm. The key parameters investigated are the heating duration, slab thickness and load ratio. Based on the test results, it has been found that the fire-resistance ratings of all the tested specimens fall below the specified requirements in the current building regulations of Thailand. The level of concrete spalling on the fire-exposed surface increases with the heating duration. It has also been found that the fire resistance of thicker hollow-core concrete slabs may be lower, even when smaller values of maximum vertical deflection are observed during the heating period. Furthermore, a higher load ratio leads to a more rapid collapse of the tested specimen. The experimental results suggest the necessity of supplementary means of fire protection for these slabs in practical building construction.
      PubDate: 2015-04-30
      Issue No: Vol. 19 (2015)
  • Coseismic and Postseismic Displacement of 2011 Mw 6.8 Tarlay Earthquake,
           Myanmar using InSAR Techniques and Inversion Analysis

    • Authors: Pattama Phodee, Itthi Trisirisatayawong, Anuphao Aobpaet
      Abstract: In this study, we investigate the March 24th 2011 Mw=6.8 Tarlay earthquake, Myanmar using Interferometric Synthetic Aperture Radar (InSAR) and inversion analysis. We firstly invert InSAR coseismic displacement from our previous study. The inversions are carried out in both single and multi-patch model. The coseismic slip of 2.5 meter from single-patch solution is then combined with long-term slip rate from geomorphological study, resulting in an estimate of 1,140-4,160 years recurrence period. Then, coulomb stress changes on nearby faults in northern Thailand are calculated. It is found that stress in western and middle segments of Mae Chan fault decreases significantly while stress increase in eastern segment of Mae Chan, Mae Ing and Chiang Kham fault. Finally, the results from PSInSAR of 29 Radarsat-2 images reveal postseismic displacement rates between -24.4.6 to 34.5 millimeters per year
      PubDate: 2015-04-30
      Issue No: Vol. 19 (2015)
  • The Effect of Initial Moisture Content on Moisture Migration in a Big Bag
           of Sugar in the Presence of Cyclic Temperature Changes: Numerical Analysis

    • Authors: Chalawut Suwannatrai, Terasut Sookkumnerd
      Abstract: The study of moisture migration in a big bag of sugar in which undergoes the fluctuation of temperature as in the shipping condition was investigated by a mathematical model. The mathematical model was derived from the conservation of mass and energy, solved by numerical method of lines, validated with the experimental data reported in the previous literature, and used to predict moisture migration for 30 days. It has revealed that the initial moisture content before shipping has the significant effect on the moisture migration. It was found that the large amount of moisture diffuses into the interfacial big bag along and the periodical adsorption and desorption takes place when the initial moisture content is high; hence, caking of moist sugar is likely to occur. The result greatly yields useful information for studying caking formation due to moisture migration.
      PubDate: 2015-04-30
      Issue No: Vol. 19 (2015)
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