scholarly journals Determination of carbon dioxide concentrations in air from livestock housing systems : reference method using the lung method as applied by Wageningen Livestock Research

2020 ◽  
Author(s):  
J. Mosquera ◽  
◽  
J.P.M. Ploegaert ◽  
G.C.C. Kupers
Keyword(s):  
Carbon Dioxide ◽  
Reference Method ◽  
Housing Systems ◽  
Carbon Dioxide Concentrations

Experimental Research on Vacuum Fresh-Keeping Packaging Technology of Rice and Dynamical Model

2012 ◽  
Vol 200 ◽  
pp. 462-465
Author(s):  
Xue Gong
Keyword(s):  
Carbon Dioxide ◽  
Gas Permeability ◽  
Packaging Material ◽  
Reducing Sugar ◽  
New Method ◽  
Vacuum Degree ◽  
Dynamic Permeability ◽  
Carbon Dioxide Concentrations ◽  
Main Factor

The key of rice keeping-fresh packaging is how to control and adjust oxygen and carbon dioxide concentrations in the packaging. The gas permeability of packaging material is the main factor of adjust gas concentrations within packaging. A new method of calculating dynamic permeability of packaging material was inferred by way of integrating cross-cutting dynamic process of rice respiration and film permeability. Under normal temperature, by vacuum keeping-fresh experiments on rice, the correctness of this new method was validated. T his method has the signification in guiding people on choosing vacuum degree and on determination of keeping-fresh time. The following indexes of hydrated quantity, fatty acid, reducing sugar and viscosity were tested, and the results indicated that the shelf of rice have been prolonged more than 180 days.

Determination of heat losses for sections of main heat pipelines using the reference method

2017 ◽  
Vol 20 (1) ◽  
pp. 22-27
Author(s):  
O. Tsakanyan ◽  
◽  
V. Goloshchapov ◽  
S. Koshel ◽  
N. Ganzha ◽  
...  
Keyword(s):  
Reference Method ◽  
Heat Losses
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