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  Subjects -> ENGINEERING (Total: 2166 journals)
    - CHEMICAL ENGINEERING (184 journals)
    - CIVIL ENGINEERING (168 journals)
    - ELECTRICAL ENGINEERING (94 journals)
    - ENGINEERING (1172 journals)
    - ENGINEERING MECHANICS AND MATERIALS (355 journals)
    - HYDRAULIC ENGINEERING (55 journals)
    - INDUSTRIAL ENGINEERING (57 journals)
    - MECHANICAL ENGINEERING (81 journals)

ENGINEERING (1172 journals)            First | 1 2 3 4 5 6 7 8 | Last

Data Handling in Science and Technology     Full-text available via subscription   (Followers: 3)
Design Journal : An International Journal for All Aspects of Design     Hybrid Journal   (Followers: 22)
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: 11)
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)
E&S Engineering and Science     Open Access  
El Hombre y la Máquina     Open Access  
Electromagnetics     Hybrid Journal   (Followers: 2)
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: 10)
Energy Engineering     Full-text available via subscription   (Followers: 8)
Energy for Sustainable Development     Hybrid Journal   (Followers: 9)
Energy Procedia     Open Access   (Followers: 3)
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     Open Access   (Followers: 1)
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: 42)
Engineering Geology     Hybrid Journal   (Followers: 7)
Engineering International     Open Access  
Engineering Journal     Open Access   (Followers: 1)
Engineering Management Journal     Hybrid Journal   (Followers: 14)
Engineering Management Research     Open Access   (Followers: 5)
Engineering Management Reviews     Open Access   (Followers: 1)
Engineering Optimization     Hybrid Journal   (Followers: 8)
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: 2)
Épsilon     Open Access  
Ergonomics in Design: The Quarterly of Human Factors Applications     Hybrid Journal   (Followers: 11)
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: 7)
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: 11)
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: 25)
Evolutionary Intelligence     Hybrid Journal  
Evolving Systems     Hybrid Journal   (Followers: 1)
Exacta     Open Access  
Experimental Techniques     Hybrid Journal   (Followers: 46)
Experiments in Fluids     Hybrid Journal   (Followers: 8)
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: 3)
First Monday     Open Access   (Followers: 72)
Flexible Services and Manufacturing Journal     Hybrid Journal   (Followers: 1)
Flow, Turbulence and Combustion     Hybrid Journal   (Followers: 20)
Fluid Dynamics     Hybrid Journal   (Followers: 6)
Fluid Dynamics Research     Full-text available via subscription   (Followers: 8)
Fluid Phase Equilibria     Hybrid Journal   (Followers: 4)
Focus on Catalysts     Full-text available via subscription   (Followers: 1)
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: 3)
Formación Universitaria     Open Access   (Followers: 4)

  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  [1 journal]
  • Optimum Design of Steel Structures in Accordance with AISC 2010
           Specification Using Heuristic Algorithm

    • Authors: Visoth Sambath Ky, Akhrawat Lenwari, Thaksin Thepchatri
      Abstract: This paper proposes a heuristic algorithm (HA) for the optimum design of steel structures in accordance with all three methods specified in the ANSI/AISC 360-10 “Specification for Structural Steel Buildings”. These methods include the direct analysis method (DAM), and two alternative methods, namely, the first-order analysis method (FAM), and the effective length method (ELM). The objective of the design algorithm is to obtain the least weight for the designed steel sections. The optimum design combines the SAP2000 structural analysis program and the heuristic algorithm that is written in Microsoft Visual Basic program. The rigorous second-order analysis was performed in both DAM and ELM, while the first-order analysis was used in the FAM. Three design examples of planar steel frames are used to illustrate the application. Among the three design methods, the FAM results in lower bound solutions, while the EFM results in upper bound solutions.
      PubDate: 2015-07-31
      Issue No: Vol. 19 (2015)
       
  • Residual Strength Characteristics of Polymer Fibre Concrete Exposed to
           Elevated Temperature

    • Authors: S. Thirumurugan, Sivakumar Anandan
      Abstract: Mechanical properties of polymer based concrete exposed to high temperature effects are evaluated in the present study. Concrete mixtures were prepared using SBR (styrene butadiene rubber) latex and reinforced with polypropylene fibres (PP). Latex polymer modified concrete mixes consisting of different aggregate proportions and polymeric fibre contents (0.1 to 0.3% Vf) were investigated for high temperature performance. Concrete specimens after required curing were subjected to different high temperature effects from 200°C to 800°C and the corresponding weight loss and residual strength was determined. In addition, the residual elastic modulus of polymer concretes was determined from the compressive stress-strain properties. Experimental observations showed that, compared to plain concrete the residual strength characteristics of polymer fibre concretes were affected when exposed to high temperature. Strength degradation occurred with increase in temperature and the test results indicated that the temperature sustainability of polypropylene fibre concretes were observed up to 200°C. A maximum compressive strength loss upto 56.75% for plain concrete and 9.87% for polymer fibre concrete was noticed when exposed to high temperature upto 800°C. Further, microscopic analysis of fibre concretes exposed to high temperature showed possible melting of PP fibres resulting in filling the pore spaces which possibly improved the matrix hardening. Also, the high volume fibre incorporated concrete mixes showed maximum residual strength gain due to favourable matrix strengthening and demonstrated high temperature performance of polymer concretes.
      PubDate: 2015-07-31
      Issue No: Vol. 19 (2015)
       
  • A New Scheme for the Finite Volume Method Verified with Two Dimensional
           Laminar Natural Convection in a Square Cavity

    • Authors: Uthai Prasopchingchana, Tul Manewattana
      Abstract: A new scheme applied to the finite volume method for solving the partial differential equations of fluid flow is proposed. The Lagrange interpolating polynomial with a setting of zero for the spatial domain at the cell faces, and the present time at the cell center is adopted for the new scheme to estimate the values of the variables at the cell faces, the derivative values of the variables with respect to the spatial domain at the cell faces and the derivative values of the variables with respect to time at the cell center for spatial and temporal discretization of the discretized equation. The new scheme was verified by comparing the solutions of the new scheme to the benchmark numerical solutions and the published numerical solutions of two dimensional laminar natural convection in a square cavity. From the comparison, the results show that the solutions of the new scheme agree well with the benchmark numerical solutions and the published numerical solutions.
      PubDate: 2015-07-31
      Issue No: Vol. 19 (2015)
       
  • Manipulation of Biochemical Compositions of Chlorella sp.

    • Authors: Puchong Sri-uam, Chenwit Linthong, Sorawit Powtongsook, Kunn Kungvansaichol, Prasert Pavasant
      Abstract: This work aimed to study the effect of several environmental parameters (light intensity, temperature, and aeration rate) on the accumulation of nutritional components and lutein production in a green microalgae Chlorella sp. It was proven in this work that the biochemical composition of Chlorella sp. could be manipulated through the control of environmental conditions during the cultivation. A simple 2L bubble column photobioreactors installed in a well controlled culture chamber was employed as a model system where temperature, light intensity, and aeration rate (usg) could be controlled in the range from 30-40ºC, 10-30 kLux, and 0.5-1.5 cm/s, respectively. Lipid and protein productivity were the most abundant at 35°C, 10 kLux and 1 cm/s, whereas carbohydrate productivity was found to be maximized at 30°C, 30 kLux and 0.5 cm/s. In addition, Chlorella sp. could also generate strong antioxidizing agents like lutein which was found to be mostly produced at 35°C, 10 kLux and 1 cm/s.
      PubDate: 2015-07-31
      Issue No: Vol. 19 (2015)
       
  • Hot Compressed Water Extraction of Lignin by Using a Flow-Through Reactor

    • Authors: Siti Machmudah, Wahyudiono Wahyudiono, Hideki Kanda, Mitsuru Sasaki, Motonobu Goto
      Abstract: Japanese rice straw, an agricultural by-product, was utilized for the extraction of lignin by hot compressed water at temperatures of 443–503 K and a pressure of 4.0 MPa using a flow-through system, a simple and environmentally friendly extraction method requiring no chemicals other than water. Under these conditions, thermal softening of the Japanese rice straw occurred, allowing the removal of lignin via depolymerization reactions. Lignin as an extraction product was analyzed using utraviolet-visible (UV–vis) spectrophotometry. Lignin recovery approached 85 % when the extraction was performed at 443 and 473 K with a flow rate of 4.67 ml min–1. At a constant residence time, recovery amounts increased with increasing flow rate at each temperature. The results suggested that this process may result in an advanced plant biomass components extraction technology.
      PubDate: 2015-07-31
      Issue No: Vol. 19 (2015)
       
  • Mapping Rubber Tree Stand Age using Pléiades Satellite Imagery: A
           Case Study in Talang District, Phuket, Thailand

    • Authors: Werapong Koedsin, Alfredo Huete
      Abstract: The rubber stand age information is an important variable for determining the distribution of carbon pools and fluxes in rubber plantation ecosystems as well as for production management. This study demonstrates the capability of high spatial resolution satellite imagery with the help of feature selection (i.e., Sequential Forward Floating Selection) to improve the accuracy of rubber stand age mapping. It was found that the Pléiades imagery with the help of Sequential Forward Floating Selection can successfully classify rubber stands age. The total testing accuracy was improved from 94.07% to 94.92% and 96.61% after applying the Principal Component and the Sequential Forward Floating Selection algorithms, respectively. Since the methodology proposed in this study can accurately classify 3 classes of rubber stand age, it is anticipated that this methodology can be used as a guideline for rubber tree stand age mapping in other study areas.
      PubDate: 2015-07-31
      Issue No: Vol. 19 (2015)
       
  • A Study of Cotton Dust Mixed with Wood Dust for Bio-Briquette Fuel

    • Authors: Siripol Suvunnapob, Borvorn Israngkura Na Ayudhya, Boonsri Kusuktham
      Abstract: Various textile-industrial wastes such as cotton wastes, polyester fibres, lumps and old rags can be a source of energy. Cotton dust seems to be one of the most interesting bio-waste energy sources because its shares of the high heat energy and organic material. This paper presents physical and mechanical properties of briquette mixed with cotton dust (CD) and wood dust (WD). The various ratios of CD:WD (0:100, 20:80, 40:60, 60:40, 80:20 and 100:0 % by weight) were investigated. The dimensional of hexagon briquette specimen was 5 cm (outer diameter) and 2.5 cm (hollow inner diameter) with the height of 10 cm was subjected to physical and mechanical tests. Results of physical performance test showed that the briquette specimens with ratio of CD:WD (1:0) gave the lowest ignition temperature, smoke temperature and duration of flame out time of 280°C, 275°C and 6.30 min/2gm respectively. While, the briquette specimens made with ratio of 0.2:0.8 gave the highest heat energy of 3,960 cal/g. However, the result of mechanical properties showed that and briquette specimens made with the ratio of 0.2:0.8 was the highest compressive strength of 9.80 N/mm2. This study indicated that CD can be used as a substitute material for bio-briquette fuels.
      PubDate: 2015-07-31
      Issue No: Vol. 19 (2015)
       
  • Dynamic Analysis and Determination of Maximum Tensile Strain of Bottom
           Asphalt Concrete for Different Vehicle Velocities

    • Authors: Gholamali Shafabakhsh, Hossein Naderpour, Mana Motamedi
      Abstract: Studying the stress, strain and deformation in pavement under traffic loads is one of the most important areas in pavement engineering. Tensile strain in the bottom of asphalt, leads to the most common type of failure (fatigue); therefore, it is an important parameter to be analyzed. In this study, the pavement structure has been analyzed and then for validation, the output in all elements and points were compared to the field results obtained from University of Pensylvania. The further studies were conducted by 3D program which indicated a good agreement with the results from field and the first finite element-based program. In static and quasi-static loadings, the maximum strain were observed exactly under the load center, while in dynamic loading, unexpectedly,themaximum value occurred behind the load center, and the distance increases by increase of vehicle velocity. This study includes the effect of load speed on tensile strain in asphalt sub-layer.
      PubDate: 2015-07-31
      Issue No: Vol. 19 (2015)
       
  • Solubility of Camphene and Caryophyllene Oxide in Subcritical and
           Supercritical Carbon Dioxide

    • Authors: Hooi Sim Yeoh, Thomas Shean Yaw Choong, Noranizan Mohd Adzahan, Russly Abdul Rahman, Gun Hean Chong
      Abstract: The solubility of camphene and caryophyllene oxide in subcritical and supercritical carbon dioxide were determined using dynamic off-line analysis method. Under subcritical condition, solubility of camphene and caryophyllene oxide were (1.738 to 18.118) ∙ 10^-3 and (1.84 to 7.872) ∙ 10^-3 respectively at 298.15 K with pressure varied from 50 to 70 bar. At 302.15 K and under same pressure variation, solubility of camphene and caryophyllene oxide were (1.918 to 18.76) ∙ 10^-3 and (14 to 25.624) ∙ 10^-3 respectively. Under supercritical condition, experiments were run from 80 bar to 250 bar. Solubility of camphene was ranged from (54.024 to 151.67) ∙ 10^-3 at 308.15K and (17.552 to 65.487) ∙ 10^-3 at 313.15 K; while solubility of caryophyllene oxide was ranged from (24.9 to 299.94) ∙ 10^-3 at 308.15 K and (2.542 to 102.359) ∙ 10^-3 at 318.15 K. These solubility data was correlated with three semi-empirical models which were Bartle, Chrastil and Mendez-Santiago-Teja model. Of these three models, Mendez-Santiago-Teja model showed excellent fitting with average absolute relative deviation kept below 2%.
      PubDate: 2015-07-31
      Issue No: Vol. 19 (2015)
       
  • Upgrading Feldspar by WHIMS and Flotation Techniques

    • Authors: Somsak Saisinchai, Thitisak Boonpramote, Pinyo Meechumna
      Abstract: Large reserves of feldspar ores exist in the pegmatite veins at Ban Tak district, Tak province. The main impurities of these deposits are muscovite, biotite and garnet which resulted in high Fe-content that does not meet the raw materials specification for the ceramic industry. The chemical compositions of the feldspar ores are 75.93 %SiO2, 14.34%Al2O3, 0.63% Fe2O3, 4.01%K2O and 4.34%Na2O with the fire test results of L= 63.10, a = 2.04 and b = 10.56. The typical specifications of the commercialised feldspar require %SiO2, 17%, Fe2O3 5%. The traditional method using to remove Fe-bearing minerals from the feeds is the reverse flotation methods. However, the existing method consumes high sulphuric acid which may create the environmental impact for the nearby area if the treatment is not completely done or the accident occurs. The proposed process combine the typical process of crushing, grinding and classifying, attrition scrubber, with the wet high intensity magnetic separator (WHIMS) and the feldspar direct flotation. WHIMS was use to remove muscovite, biotite and garnet which are the causes of high Fe-content. The results showed that efficient separation of Fe-bearing minerals could be achieved by WHIMS in the commercial scale and create the environmental friendly process. This process make the recovery of 40% and the chemical compositions of feldspar products are 68.29 %SiO2, 18.69% Al2O3, 0.07% Fe2O3, 5.83% K2O and 6.33%Na2O with the fire test results of L= 82.10, a = -0.56 and b = 3.23 which meet the commercial grade of feldspar.
      PubDate: 2015-07-31
      Issue No: Vol. 19 (2015)
       
  • Oxidative Coupling of Methane over YSZ Support Catalysts for Application
           in C2 Hydrocarbon Production

    • Authors: Weerinda Appamana, Kridsada Khammona, Wisitsree Wiyaratn, Suttichai Assabumrungrat
      Abstract: This paper studies the development of Mn-Na2WO4 catalysts on YSZ support for oxidative coupling of methane reaction. It can be divided into two parts; (1) study in fixed bed reactor (FBR), and (2) study in solid oxide fuel cell reactor (SOFC). In part I, the experiments were performed using co-feeds of methane, oxygen and nitrogen inert gas at a ratio of 4:1:5 for different temperatures (973-1173 K). Mn-Na2WO4 catalyst on YSZ support was doped with sulfur, phosphorous, and cerium in order to improve its catalytic reactivity. The results indicated that sulfur and phosphorous showed the good improvement for Mn-Na2WO4 catalyst on YSZ support. At 1073 K, S-Mn-Na2WO4/YSZ provided C2 selectivity of 60.3% and methane conversion of 31.1%, while P-Mn- Na2WO4/YSZ offered C2 selectivity of 59.8% and methane conversion of 34.1%. P-Mn-Na2WO4/YSZ catalyst was selected as anode catalysts for further study in the SOFC reactor. The experiments were carried out using La0.8Sr0.2MnO3 (LSM) as the cathode catalyst, 8mol% yttria-stabilized zirconia (YSZ) as the electrolyte. P-Mn-Na2WO4/YSZ exhibited the best performance, providing C2H4 selectivity of 89.0%, methane conversion of 10.5% and maximum power density of 7.2 W/m2 at 1123 K. In addition, the stability of the P-Mn-Na2WO4/YSZ catalyst was tested at 1123 K. Good stability of the reaction system could be observed at least for 29 hours.
      PubDate: 2015-07-31
      Issue No: Vol. 19 (2015)
       
  • Hydrogen Production From Palmitic Acid Through Autothermal Reforming:
           Thermodynamic Analysis

    • Authors: Tawiwan Kangsadan, Thanarak Srisurat, Pattaraporn Kim, Navadol Laosiripojana, Sunisa Jindasuwan, Unalome Wetwatana Hartley
      Abstract: This work studies thermodynamic analysis of hydrogen production via autothermal reforming of palmitic acid. A Gibbs free energy minimization method was applied to analyze thermodynamic of syngas production via oxidative reforming of palmitic acid. Equilibrium compositions were estimated at temperature of 800°C, 900°C and 1000°C under atmospheric pressure. Optimal operating temperature and molar feed ratios of; steam to palmitic acid (S/C) and oxygen to palmitic acid (O/C) ranging from 0.5 to 4; were determined. The PTC Mathcad Prime 2.0 is used to calculate enthalpy, entropy and Gibbs free energy. Aspen Plus program was applied for calculation of product yields and heat duty. Maximum yield of 17.88 mole/molePalmitic with S/C of 4 and O/C of 0.5 can be achieved at 1000°C and yield were 7.75 mole/molePalmitic with S/C of 4 and O/C of 4. Production of hydrogen and carbon monoxide increased with increasing temperatures.
      PubDate: 2015-07-31
      Issue No: Vol. 19 (2015)
       
 
 
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