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Publisher: Hindawi Publishing Corporation   (Total: 403 journals)

 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  

  First | 1 2 3 4 5 | Last

Intl. J. of Nephrology     Open Access   (Followers: 3, SJR: 0.654, h-index: 8)
Intl. J. of Nuclear Energy     Open Access   (Followers: 2)
Intl. J. of Oceanography     Open Access   (Followers: 7)
Intl. J. of Optics     Open Access   (Followers: 1, SJR: 0.392, h-index: 5)
Intl. J. of Otolaryngology     Open Access   (Followers: 5)
Intl. J. of Palliative Care     Open Access   (Followers: 6)
Intl. J. of Partial Differential Equations     Open Access  
Intl. J. of Pediatrics     Open Access   (Followers: 5)
Intl. J. of Peptides     Open Access   (Followers: 5, SJR: 0.566, h-index: 12)
Intl. J. of Photochemistry     Open Access   (Followers: 1)
Intl. J. of Photoenergy     Open Access   (Followers: 2, SJR: 0.364, h-index: 23)
Intl. J. of Plant Genomics     Open Access   (Followers: 2, SJR: 0.552, h-index: 16)
Intl. J. of Polymer Science     Open Access   (Followers: 20, SJR: 0.316, h-index: 7)
Intl. J. of Population Research     Open Access  
Intl. J. of Proteomics     Open Access   (Followers: 1)
Intl. J. of Quality, Statistics, and Reliability     Open Access   (Followers: 9, SJR: 0.118, h-index: 2)
Intl. J. of Reconfigurable Computing     Open Access   (SJR: 0.256, h-index: 5)
Intl. J. of Reproductive Medicine     Open Access   (Followers: 2)
Intl. J. of Rheumatology     Open Access   (Followers: 3, SJR: 0.77, h-index: 10)
Intl. J. of Rotating Machinery     Open Access   (Followers: 2, SJR: 0.365, h-index: 15)
Intl. J. of Spectroscopy     Open Access   (Followers: 7)
Intl. J. of Statistical Mechanics     Open Access  
Intl. J. of Stochastic Analysis     Open Access   (Followers: 1, SJR: 0.24, h-index: 3)
Intl. J. of Superconductivity     Open Access  
Intl. J. of Surgical Oncology     Open Access   (Followers: 2, SJR: 0.572, h-index: 5)
Intl. J. of Telemedicine and Applications     Open Access   (Followers: 2, SJR: 0.449, h-index: 12)
Intl. J. of Vascular Medicine     Open Access   (Followers: 1, SJR: 0.697, h-index: 9)
Intl. J. of Vehicular Technology     Open Access   (Followers: 3, SJR: 0.148, h-index: 3)
Intl. J. of Zoology     Open Access   (Followers: 2, SJR: 0.189, h-index: 4)
Intl. Scholarly Research Notices     Open Access   (Followers: 226)
J. of Addiction     Open Access   (Followers: 6)
J. of Aging Research     Open Access   (Followers: 5, SJR: 0.826, h-index: 13)
J. of Allergy     Open Access   (Followers: 3)
J. of Amino Acids     Open Access   (Followers: 3)
J. of Anesthesiology     Open Access  
J. of Anthropology     Open Access   (Followers: 16)
J. of Applied Chemistry     Open Access   (Followers: 2)
J. of Applied Mathematics     Open Access   (Followers: 4, SJR: 0.285, h-index: 16)
J. of Applied Mathematics and Decision Sciences     Open Access   (Followers: 2)
J. of Applied Mathematics and Stochastic Analysis     Open Access   (Followers: 1)
J. of Astrophysics     Open Access  
J. of Atomic, Molecular, and Optical Physics     Open Access   (Followers: 3)
J. of Automated Methods and Management in Chemistry     Open Access  
J. of Biomarkers     Open Access  
J. of Biomedical Education     Open Access   (Followers: 1)
J. of Biophysics     Open Access   (Followers: 6, SJR: 0.237, h-index: 3)
J. of Blood Transfusion     Open Access   (Followers: 1)
J. of Botany     Open Access   (Followers: 2)
J. of Calculus of Variations     Open Access  
J. of Cancer Epidemiology     Open Access   (Followers: 5, SJR: 0.756, h-index: 5)
J. of Cancer Research     Open Access   (Followers: 1)
J. of Catalysts     Open Access  
J. of Ceramics     Open Access   (Followers: 4)
J. of Chaos     Open Access  
J. of Chemistry     Open Access   (Followers: 3, SJR: 0.169, h-index: 5)
J. of Climatology     Open Access   (Followers: 1)
J. of Coatings     Open Access   (Followers: 4)
J. of Combustion     Open Access   (Followers: 6, SJR: 0.32, h-index: 4)
J. of Complex Analysis     Open Access   (Followers: 1)
J. of Complex Systems     Open Access   (Followers: 1)
J. of Composites     Open Access   (Followers: 41)
J. of Computational Engineering     Open Access  
J. of Computational Environmental Sciences     Open Access  
J. of Computational Medicine     Open Access  
J. of Computational Methods in Physics     Open Access  
J. of Computer Networks and Communications     Open Access   (Followers: 5, SJR: 0.189, h-index: 4)
J. of Construction Engineering     Open Access   (Followers: 4)
J. of Control Science and Engineering     Open Access   (Followers: 1, SJR: 0.186, h-index: 7)
J. of Criminology     Open Access   (Followers: 8)
J. of Crystallography     Open Access  
J. of Dental Surgery     Open Access  
J. of Diabetes Research     Open Access   (Followers: 3)
J. of Difference Equations     Open Access  
J. of Discrete Mathematics     Open Access   (Followers: 1)
J. of Drug Delivery     Open Access   (Followers: 6)
J. of Ecosystems     Open Access   (Followers: 4)
J. of Electrical and Computer Engineering     Open Access   (Followers: 7, SJR: 0.226, h-index: 6)
J. of Energy     Open Access   (Followers: 1)
J. of Engineering     Open Access  
J. of Environmental and Public Health     Open Access   (Followers: 15, SJR: 0.52, h-index: 9)
J. of Fluids     Open Access  
J. of Food Processing     Open Access  
J. of Fuels     Open Access  
J. of Geochemistry     Open Access  
J. of Geological Research     Open Access   (Followers: 1)
J. of Geriatrics     Open Access  
J. of Gravity     Open Access  
J. of Histology     Open Access  
J. of Hormones     Open Access  
J. of Industrial Engineering     Open Access   (Followers: 1)
J. of Industrial Mathematics     Open Access  
J. of Inorganic Chemistry     Open Access   (Followers: 1)
J. of Insects     Open Access  
J. of Lipids     Open Access   (Followers: 1)
J. of Marine Biology     Open Access   (Followers: 15)
J. of Materials     Open Access  
J. of Mathematics     Open Access  
J. of Medical Engineering     Open Access  
J. of Metallurgy     Open Access   (Followers: 3)
J. of Mining     Open Access   (Followers: 2)

  First | 1 2 3 4 5 | Last

Journal Cover   Journal of Materials
  Follow
    
  This is an Open Access Journal Open Access journal
   ISSN (Print) 2314-4866 - ISSN (Online) 2314-4874
   Published by Hindawi Publishing Corporation Homepage  [403 journals]
  • First-Principle and Experimental Study of a Gadolinium-Praseodymium-Cobalt
           Pseudobinary Intermetallic Compound

    • Abstract: First-principles methods were used to determine the magnetic state of a simulated cobalt-based binary alloy (Gd,Pr)Co17 along with its corresponding lattice parameters and density. The resulting composition was fabricated using two methods arc-melting and induction-melting and compared with the calculated values. The induction-melted samples showed greater homogeneity and successfully produced the R2Co17 structure. Calculated values qualitatively predict ferromagnetic behavior and lattice parameters to be within a low percent. The development of magnetic alloys with the assistance of computational methods promises faster development of new functional materials.
      PubDate: Sun, 28 Jun 2015 07:34:41 +000
       
  • Solution-Processed rGO/AgNPs/rGO Sandwich Structure as a Hole Extraction
           Layer for Polymer Solar Cells

    • Abstract: We found that inserting silver nanoparticles (AgNPs) between two layers of reduced grapheme oxide (rGO) has an effect on tailoring the work function of rGO. The utilization of rGO/AgNPs/rGO sandwich structure as the hole extraction layer in polymer solar cells is demonstrated. Solution-processable fabrication of this sandwich structure at the ITO/active layer interface facilitates the extraction of hole from active layer into ITO anode because of lowering the barrier level alignment at the interface. It results in an improvement of the short circuit current density and the overall photovoltaic performance.
      PubDate: Thu, 11 Jun 2015 07:00:23 +000
       
  • Thermal Spectroscopy and Kinetic Studies of PEO/PVDF Loaded by Carbon
           Nanotubes

    • Abstract: Nanocomposites of polyethylene oxide (PEO) and polyvinylidene fluoride (PVDF) without and with low content of single and multiwalled carbon nanotubes (SWCNTs-MWCNTs) were prepared and studied by thermogravimetric analysis (TGA) using different heating rate. TGA results indicate that the thermal stability of neat PEO/PVDF blend was improved with both heating rate and incorporation of carbon nanotubes (CNTs). The degradation temperature for neat blend was lower than those of the nanocomposites after adding both SWCNTs and MWCNTs. As increase of heating rate, the onset of decomposition is irregularly moved to higher temperatures. This indicates that the thermal stability of the polymeric matrices has been improved after addition of CNTs. The residual weight of the samples left increased steadily with adding of both SWCNTs and MWCNTs. Kinetic thermodynamic parameters such as activation energy, enthalpy, entropy, and Gibbs free energy are evaluated from TGA data using Coats-Redfern model. The values of all parameters irregularly decrease with increasing of heating rate due to increasing of heating rate temperature, the random scission of macromolecule chain in the polymeric matrices predominates and the activation energy has a lower value.
      PubDate: Sun, 31 May 2015 12:32:52 +000
       
  • Sodium Sulphate Effect on Cement Produced with Building Stone Waste

    • Abstract: In this study, the blended cements produced by using the building stone waste were exposed to sulphate solution and the cement properties were examined. Prepared mortar specimens were cured under water for 28 days and then they were exposed to three different proportions of sodium sulphate solution for 125 days. Performances of cements were determined by means of compressive strength and tensile strength tests. The broken parts of some mortar bars were examined with scanning electron microscope (SEM). Besides, they were left under moist atmosphere and their length change was measured and continuously monitored for period of 125 days. In blended cements, solely cements obtained by replacing 10–20% of diatomites gave similar strength values with ordinary Portland cement (CEM I 42.5R) at the ages of 7, 28, and 56 days. In all mortar specimens that included either waste andesite (AP) or marble powder (MP) showed best performance against very severe effective sodium sulphate solutions (13500 mg/L).
      PubDate: Thu, 07 May 2015 12:19:29 +000
       
  • Effect of Inert and Pozzolanic Materials on Flow and Mechanical Properties
           of Self-Compacting Concrete

    • Abstract: This research investigates the fresh behaviour and mechanical properties of self-compacting concrete (SCC) containing high volume of limestone, metakaolin, silica fume, zeolite, and viscosity modifying admixture. Two fine aggregates with different fineness modulus were also utilized to evaluate the effect of sand’s gradation on the mechanical and flow properties of SCC containing inert and pozzolanic powder. Slump flow, V-funnel for fresh concrete and 5-minute-old concrete, J-ring, Orimet with and without J-ring, and L-box and U-box tests were performed on all 14 fresh concrete mixtures to examine the fresh properties of self-compacting concrete. Compressive strength of hardened specimens was measured at 7 and 35 days and tensile strength was also determined at the age of 28 days. The results show that sand grading significantly affects the fresh properties of SCC. It is also concluded that high volume of active powders including metakaolin, zeolite, and silica fume could not improve both the flow and mechanical properties of SCC at the same time. Limestone can be effectively used as filler in SCC in high volume content. A new set of limits for the L-box and U-box tests for SCC containing silica fume is also recommended as the existing criteria are not satisfactory.
      PubDate: Tue, 31 Mar 2015 13:42:54 +000
       
  • A Qualitative Study of Thermochemical Degradation Related with Concrete
           and Mortar Strength

    • Abstract: The nondestructive methods applied to the evaluation of concrete use different parameters to be related in the estimated resistance of concrete or other properties. The conducted study has evaluated a qualitative method of thermochemical degradation in concrete and mortar using a solvent acid whose chemical energy is capable of degrading the material. The reported study consisted in performing laboratory tests on mechanical compressive strength of concrete and mortar and thermochemical tests performed on little cores of concrete or mortar immersed in hydrochloric acid contained in a calorimeter system, obtaining several parameters as the time of thermal equilibrium, increase of temperature, degradation energy, and mass loss due to the thermochemical reaction. From the obtained results, these variables were analyzed and served as a parameter to be related with the concrete or mortar strength. The best parameter proved to be a good estimator was the increase of temperature and its degradation energy, whose value was inversely proportional to the strength of the material. Also, it is found that the most significant mechanisms that influenced the thermochemical reaction are the calcium content and the water chemically bound in the cement paste to perform the thermochemical test.
      PubDate: Thu, 26 Mar 2015 11:20:33 +000
       
 
 
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