Precise determination of thermal conductivity of high purity fused quartz from 0° to 650°C

Physica ◽  
1969 ◽  
Vol 41 (3) ◽  
pp. 515-520 ◽  
Author(s):  
A. Sugawara
Keyword(s):  
Thermal Conductivity ◽  
High Purity ◽  
Precise Determination ◽  
Fused Quartz

High-purity single-crystal monoisotopic silicon-28 for precise determination of Avogadro’s number

2008 ◽  
Vol 421 (1) ◽  
pp. 157-160 ◽  
Author(s):  
G. G. Devyatykh ◽  
A. D. Bulanov ◽  
A. V. Gusev ◽  
I. D. Kovalev ◽  
V. A. Krylov ◽  
...  
Keyword(s):  
Single Crystal ◽  
High Purity ◽  
Precise Determination ◽  
Avogadro’S Number

scholarly journals The latest mathematical and empirical models to calculate the thermal conductivity of the soils

2021 ◽  
Vol 323 ◽  
pp. 00007
Author(s):  
Agnieszka Drzyzga
Keyword(s):  
Thermal Conductivity ◽  
Heat Exchangers ◽  
Precise Determination ◽  
Empirical Models ◽  
Universal Model ◽  
Ground Heat Exchangers ◽  
New Models ◽  
Underground Infrastructure

The paper presents the latest models for calculating the thermal conductivity of soil. Precise determination of this parameter is necessary for the correct and safe location of geoengineering objects, underground infrastructure such as cables or ground heat exchangers. A universal model that is easy to apply and gives the most accurate results has not yet been developed. New models are constantly being developed. The aim of this work is to present the latest models for calculating thermal conductivity, so that knowing the properties of the soil, it is possible to select an appropriate model to calculate its conductivity.

scholarly journals Precise determination of silver in high purity copper by isotope dilution/ICP-MS.

1990 ◽  
Vol 39 (5) ◽  
pp. 283-287 ◽  
Author(s):  
Hiroshi UMEDA ◽  
Isamu INAMOTO ◽  
Koichi CHIBA
Keyword(s):  
Isotope Dilution ◽  
High Purity ◽  
Precise Determination ◽  
Icp Ms ◽  
Purity Copper
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