Thermal effects on materials
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Relative importance of grain boundaries and size effects in thermal conductivity of nanocrystalline materials
A theoretical model for describing effective thermal conductivity (ETC) of nanocrystalline materials has been proposed, so that the ETC can be easily obtained from its grain size, single crystal thermal conductivity, single crystal phonon mean free path (PMFP), and the Kaptiza thermal resistance. In addition, the relative importance between grain boundaries (GBs) and size effects on the ETC of ...
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Article 19 of the national building regulations is one of the important strategies of modern Iranian architecture, which can help to calculate and determine building materials in a warm and dry climate for thermal comfort. In order to discover the effect of this topic on thermal comfort. In this study, through the quantitative method and PMV, the effect of nineteenth building on winter temperat...
متن کاملSurveying the effects of silver nanoparticle on thermal properties of some calyx [4]arene compounds by Differential Scanning Calorimetry (DSC)
One of the best and the most active ways for surveying thermal behaviour of materials is using differential scanning calorimetry. In this paper, the authors have studied thermal behaviour for Schiff base ligand and their synthesized Cobalt, Nickel complexes. In this method, the sample is opposed to a controlled temperature change and its physical properties. Here we studied melting point and Tg...
متن کاملSurveying the effects of silver nanoparticle on thermal properties of some calyx [4]arene compounds by Differential Scanning Calorimetry (DSC)
One of the best and the most active ways for surveying thermal behaviour of materials is using differential scanning calorimetry. In this paper, the authors have studied thermal behaviour for Schiff base ligand and their synthesized Cobalt, Nickel complexes. In this method, the sample is opposed to a controlled temperature change and its physical properties. Here we studied melting point and Tg...
متن کاملNumerical Investigation of Roofing Materials Effect on Solar Heat Gain in Different External Conditions
In this study, the thermal performance of three kinds of roofs with different heat capacity and thermal conductivity under different external conditions has been investigated using a numerical method. For this purpose, the combined solar radiation, conduction and convection heat transfer were calculated implicitly in terms of a one-dimensional finite difference method. Different high and low so...
متن کاملStudy on effects of thoron and thermal treatment for aging-related diseases in humans
Background: The aim of this study was to analyze the effects of thoron and thermal treatment for aging-related diseases in humans. Materials and Methods: All subjects inhaled thoron with a high concentration (about 4900 Bq/m3) for 2 weeks. Blood pressures were measured and blood samples were collected after each treatment 1, 2 and 3 weeks after the first treatment. Results: The α-atria...
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