Delaying the temperature fluctuations through PCM integrated building walls—Room conditions, PCM placement, and temperature of the heat sources

2021 ◽  
Author(s):  
Md Nahidul Islam ◽  
Dewan Hasan Ahmed
Keyword(s):  
Temperature Fluctuations ◽  
Heat Sources ◽  
Building Walls

scholarly journals Influence of Heat Sources and Relaxation Time on Temperature Distribution in Tissues

2014 ◽  
Vol 19 (2) ◽  
pp. 427-433 ◽  
Author(s):  
S. Sharma ◽  
K. Sharma
Keyword(s):  
Heat Transfer ◽  
Spatial Distribution ◽  
Relaxation Time ◽  
Temperature Fluctuations ◽  
Numerical Inversion ◽  
Heat Sources ◽  
Heat Transfer Equation ◽  
Temporal And Spatial Distribution ◽  
Physical Form ◽  
Temporal And Spatial

Abstract In the present study, the temperature fluctuations in tissues based on Penne’s bio-heat transfer equation is investigated by applying the Laplace and Hankel transforms. To get the solution in a physical form, a numerical inversion technique has been applied. The temporal and spatial distribution of temperature is investigated with the effect of relaxation time and is presented graphically.

Effects of Vibration on the Preparation of Ultrathin Sections

1973 ◽  
Vol 31 ◽  
pp. 358-359
Author(s):  
Joseph M. Blum ◽  
Edward P. Gargiulo ◽  
J. R. Sawers
Keyword(s):  
Cutting Speed ◽  
Ground Level ◽  
Environmental Vibration ◽  
Block Face ◽  
Ultrathin Sections ◽  
Embedding Medium ◽  
Thickness Variations ◽  
Building Walls ◽  
Cutting Direction ◽  
Diamond Knife

It is now well-known that chatter (Figure 1) is caused by vibration between the microtome arm and the diamond knife. It is usually observed as a cyclical variation in “optical” density of an electron micrograph due to sample thickness variations perpendicular to the cutting direction. This vibration might be induced by using too large a block face, too large a clearance angle, excessive cutting speed, non-uniform embedding medium or microtome vibration. Another prominent cause is environmental vibration caused by inadequate building construction. Microtomes should be installed on firm, solid floors. The best floors are thick, ground-level concrete pads poured over a sand bed and isolated from the building walls. Even when these precautions are followed, we recommend an additional isolation pad placed on the top of a sturdy table.

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