thermal diffusivity
SOIL THERMAL DIFFUSIVITY ESTIMATED FROM DATA OF SOIL TEMPERATURE AND SINGLE SOIL COMPONENT PROPERTIES
... of thermal conductivity for sandstone and kaolinite determined the values of thermal diffusivity in the appropriate order of ...contents, thermal conductivity increases with water content at ...
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Determining the In Situ Apparent Thermal Diffusivity of a Sandy Soil
... apparent diffusivity of sandy soil up to depths of ...the thermal diffusivity obtained will be used to design for horizontal geothermal exchanges in sandy soil areas near the beach, which are ...
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BRAZILIAN ARCHIVES OF BIOLOGY AND TECHNOLOGY
... the thermal diffusivity from t 0,5 , Parker et ...high thermal diffusivity are tested, while heat losses become dominant at high temperatures when testing thick samples ...
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Mat. Res. vol.2 número1
... As it can be seen in Fig. 3, for increasing temperatures, there is an anomaly in the thermal diffusivity around 240 K, that corresponds to the transition from phase IV to phase III. This transition is also ...
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A new definition of Bejan number
... Finally, it can be seen that the new definition of Bejan number can be obtained from the Bejan number expression by simply replacing the thermal diffusivity (a) by the mass diffusivity (D). This ...
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Mat. Res. vol.11 número1
... some thermal properties: diffusivity, conductivity, effusivity and specific heat capacity of WC-10 ...measure thermal diffusivity is described in detail. The values of thermal ...
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Mat. Res. vol.18 suppl.2
... Figure 5 shows the typical phase data of the photoacoustic signal variation with its frequency f. It is important to remember that the phase is the difference between the generated signal and the detected one. The ...
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J. Braz. Chem. Soc. vol.10 número2
... copolymer thermal conductivity increased approximately linearly with the 3HV ...hand, thermal diffusivity was very sensitive to the change in the copolymer composition showing a sudden rise that ...
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Mat. Res. vol.4 número1
... Thermal diffusivity and optical absorption have been investigated for porous silicon, at room temperature, using photoacoustic ...for thermal diffusivity is ...
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Rheological and thermophysical properties of blackberry juice
... The thermophysical properties, such as thermal conductiv- ity, density and thermal diffusivity of blackberry juice were de- termined between 9.4 and 58.4 °Brix and from 0.5 and 80.8 °C, which are ...
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Clinics vol.68 número8
... mean diffusivity provide information about the integrity of cell membranes, offering two more specific indices, namely the axial and radial diffusivities, which are useful for discriminating axon loss from ...mean ...
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Marcus Vinicius da COSTA1 , Aline Kazumi Nakata da SOLVA1 , Priscila Rodrigues e RODROGUES
... The lag factors (G) and drying coefficients (S) were determined as presented in Table 2. The drying coefficient (S) is a parameter which indicates the drying capability of the solid object and has a direct effect on the ...
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Rev. Bras. Psiquiatr. vol.38 número2
... axial diffusivity; ATR = anterior thalamic radiation; BD = bipolar disorder; BD-I = bipolar I disorder; BD-II = bipolar II disorder; CC = corpus callosum; FA = fractional anisotropy; FMRI = functional magnetic ...
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J. Aerosp. Technol. Manag. vol.3 número1
... Since the cloud is deined and has reached the condition of thermal stability with the atmosphere, it is partitioned into “disks”. The position of each disk with respect to the origin (launch pad) is determined ...
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EVALUATION OF THERMAL REMOTE SENSING FOR DETECTION OF THERMAL ANOMALIES AS EARTHQUAKE PRECURSORS
... long-term thermal fields associated with the presence of large linear structures and fault systems have been detected (Carreno et ...the thermal field can also been detected by satellite imaging and TIR ...
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DERIVATION OF AN EDDY DIFFUSIVITY DEPENDING ON SOURCE DISTANCE UNDER MODERATELY UNSTABLE CONDITIONS
... statistical diffusion theory. These coefficients are valid in the near, intermediate and far field of an elevated source. The integral form of the eddy diffusivity (Eq. 10) is more complicated than the algebraic ...
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Mat. Res. vol.15 número5
... Samples of amorphous and partially crystallized Fe 40 Ni 38 Mo 4 B 18 alloy were submitted to hydrogen gas permeation from 523 to 643 K. The hydrogen permeation curves exhibited a single sigmoidal shape, typical of tests ...
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Effect of self-stratification on sediment diffusivity in channel flows and boundary layers: a study using direct numerical simulations
... sediment diffusivity pro- files for the channel flow and boundary-layer ...sediment diffusivity in the lower half of the channel and slightly increase sedi- ment diffusivity in the upper half of the ...
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UNIVERSIDADE NOVA DE LISBOA FACULDADE DE CIÊNCIAS E TECNOLOGIA DEPARTAMENTO DE QUÍMICA
... The impregnation in scCO2 depends mainly in the high scCO2 diffusivity within the polymer structure, swelling and drug solubility, and has two contributions: the impregnation [r] ...
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Thermal Insulating Concrete Tiles
... This Paper studies the shape of high-thermal insulating concrete tiles used for roof tiling. The theoretical part consists of a comparison between this invented tiles and ordinary terrazzo tiles. The analysis ...
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