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For the evaluation of indoor thermal comfort, the assessment for main factors, such as air temperature, velocity, relative humidity and mean radiation temperature, are independent and incompatible. In this paper, PPE model was established for thermal comfort evaluation, and also GA was selected to optimize the projection direction. Therefore multi-dimension data could be changed into low dimension...
Because the amount of power that a piezoelectric transformer (PT) can handle is limited, multiple connections of PTs are necessary for the power-capacity improvement of PT-applications. In the connection, thermal imbalance between the PTs should be prevented to avoid the thermal runaway of each PT. The thermal balance of the multiple-connected PTs is dominantly affected by the electrothermal characteristics...
The aim of this report is to investigate the influence of changing the ambient temperature on behavior of simple and cascode current mirror. Moreover we'll investigate the influence of changing the temperature of each of the transistors separately with different temperature gradient configurations.
The challenge of this work is to prepare ceramics in the form of powders crystallized type Na2-2xA2xPbP2O7 (A = Li, K, Ag and 0 < x < 1) by the method glass. These different compositions will be characterized by different techniques such as X-ray diffraction, spectroscopy FTIR and thermal analyses ATD, ATG and DSC to determine their local structures. Indeed, the absorption bands appeared in...
The thermal analyses have showed a slight decreasing of the denaturation temperature for all the treated collagens. These results suggest a slight destabilization of treatments on the collagen triple helix. The dielectric results highlight the probable crosslinking effect of irradiation between the collagen and the peptides with a chain dynamics similar to the pure collagen one. Indeed, it is known...
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