Effect of an aerosol deposition pattern in the lung on the counting efficiency of a large area germanium detector array

2007 ◽  
Vol 128 (4) ◽  
pp. 449-453 ◽  
Author(s):  
G. H. Kramer ◽  
B. M. Hauck
Keyword(s):  
Germanium Detector ◽  
Aerosol Deposition ◽  
Counting Efficiency ◽  
Detector Array ◽  
Large Area ◽  
Deposition Pattern

The GERmanium Detector Array read-out: Status and developments

2007 ◽  
Vol 572 (1) ◽  
pp. 479-480 ◽  
Author(s):  
C. Cattadori ◽  
O. Chkvorets ◽  
M. Junker ◽  
K. Kroeninger ◽  
L. Pandola ◽  
...  
Keyword(s):  
Germanium Detector ◽  
Detector Array

Effect of pretest temperature on aerosol penetration and clearance in donkeys

1976 ◽  
Vol 41 (6) ◽  
pp. 920-924 ◽  
Author(s):  
D. E. Bohning ◽  
R. E. Albert ◽  
M. Lippmann ◽  
V. R. Cohen
Keyword(s):  
Regression Analysis ◽  
Linear Regression ◽  
Linear Regression Analysis ◽  
Aerosol Deposition ◽  
Multiple Linear Regression Analysis ◽  
Outdoor Temperature ◽  
Deposition Pattern ◽  
Particle Penetration ◽  
Temperature And Humidity ◽  
Humidity Dependence

Pretest temperature and humidity were correlated with tracheobronchial particle penetration and clearance data from donkeys housed in unheated outdoor facilities and tested after spending 1–2 h in a temperature- andhumidity-controlled laboratory. The animals inhaled an inert insoluble radioisotope-labeled monodisperse aerosol for several minutes. Its retention was monitored continuously for 3 h by external gamma detection. Aerosol deposition pattern and bronchial clearance were linearly correlated with pretestoutdoor temperature which ranged from -10 to 30 degrees C. The fraction depositing in the unciliated regions of the lung decreased 0.6% per degrees C drop in outdoor temperature. Overall bronchial transport decreased at least1.5%per degrees C decrease. Multiple linear regression analysis and correction for the positive correlation between temperature and humidity left no significant residual humidity dependence. Acclimatization of the animals in the laboratory for 6 h before testing significantly reduced these effects.

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