scholarly journals THE THERMAL DEATH-POINT OF TUBERCLE BACILLI IN MILK AND SOME OTHER FLUIDS

1899 ◽  
Vol 4 (2) ◽  
pp. 217-233 ◽  
Author(s):  
Theobald Smith
Keyword(s):  
Salt Solution ◽  
Distilled Water ◽  
Thermal Death ◽  
Thermal Death Point

1. Tubercle bacilli when suspended in. distilled water, normal salt solution, bouillon and milk, are destroyed at 60° C. in 15 to 20 minutes. The larger number are destroyed in 5 to 10 minutes. 2. When tubercle bacilli are suspended in milk, the pellicle which forms during the exposure at 60° C. may contain living bacilli after 60 minutes.

Thermal Death Point: I. Spores of Clostridium Tetani

1931 ◽  
Vol 48 (5) ◽  
pp. 436-456 ◽  
Author(s):  
T. J. Murray ◽  
M. R. Headlee
Keyword(s):  
Clostridium Tetani ◽  
Thermal Death ◽  
Thermal Death Point

scholarly journals The Influence of Salt Solution on Morphological Changes in a Geosynthetic Clay Liner

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Mochamad Arief Budihardjo
Keyword(s):  
Salt Solution ◽  
Morphological Changes ◽  
Microscopic Analysis ◽  
Optical Microscope ◽  
Distilled Water ◽  
Nacl Solution ◽  
Geosynthetic Clay Liner ◽  
Clay Liner ◽  
Morphological Variations ◽  
Crystal Deposit

Morphological variations of geosynthetic clay liner (GCL) samples, hydrated with two different permeates, distilled water and NaCl solution (100 mM concentration), were observed in detail using microscopic analysis. After the GCL samples were hydrated with the NaCl solution, they were observed with an optical microscope. While the surface of the treated GCL samples was similar to the surface of the untreated GCL, a crystal deposit was found on the surface of the treated samples. Using a scanning electron microscope (SEM), a more solid appearance was observed for the bentonite particles contained in the GCL after the sample was hydrated with distilled water in comparison to the GCL sample that was hydrated with the NaCl solution. It appears that salt solution hydration results in less swelling of the bentonite particles. Furthermore, the energy-dispersive X-ray spectrometer (EDS) results showed that distilled water hydration had no effect on the distribution of the elements contained in the GCL samples. However, bound chlorine was observed, which demonstrated that the bentonite particles had absorbed the NaCl solution. In addition, changes in the hydraulic conductivity of the hydrated GCL samples were also observed.

scholarly journals Time and temperature combinations that are lethal to Pseudomonas syringae pv actinidiae

2011 ◽  
Vol 64 ◽  
pp. 291-291
Author(s):  
I.P.S. Pushparajah ◽  
K.R. Everett
Keyword(s):  
Pseudomonas Syringae ◽  
Water Bath ◽  
Bacterial Suspension ◽  
Thermal Death ◽  
Thermal Death Point

The thermal death point was determined in vitro for three isolates of Pseudomonas syringae pv actinidiae (Psa) A bacterial suspension was treated by placing in an Eppendorf tube then floating in a water bath at seven temperatures from 263 to 60C At each temperature an aliquot was removed after 5 15 35 75 155 315 and 635 min placed onto Kings medium B (KMB) in Petri plates and spread with a sterilised bent glass rod Petri plates were placed at 25C for 24 h and colonies counted There were three isolate replicates each in an Eppendorf tube per timetemperature combination There was no difference in response between isolate replicates but time and temperature differences were significant (P

Thermal Death-Point

1906 ◽  
Vol 42 (5) ◽  
pp. 397-397
Keyword(s):  
Thermal Death ◽  
Thermal Death Point
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