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Questions related from Yasir Rashid
Did you investigated the porosity of geopolymer concrete (GPC) which seems to be obvious while observing its microstructure? What are the reasons of porosity in GPC? How can we reduce it by...
07 July 2017 1,953 4 View
Although velocity is linked with the direct relation to the product of frequency and wavelength, so can we say that modification in wavelength is compensated in the value of velocity to keep the...
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How will the results vary corresponding to the surface texture of the body in terms of thermal contact resistance?
06 June 2017 8,674 4 View
Does the solar spectrum vary by passing through the solar concentrator? Is it dependent on the concentrator material which may absorb short wavelength and transmit certain wavelength? Please share...
04 April 2017 6,808 1 View
According to Environmental Protection Agency (EPA), UV index is predicted based on the solar ultraviolet radiation, stratospheric ozone concentration, cloud amounts, and elevation of the...
04 April 2017 8,153 0 View
In an experiment, the surface temperature of concrete raised quite higher than the ambient during day time due to intense irradiance. At night, this temperature was dropped due to convective heat...
03 March 2017 578 4 View
In an outdoor experiment, I observed variations in surface temperatures of different materials while all of them were exposed to same ambient conditions (solar irradiation, wind speed etc). Please...
06 June 2016 3,084 6 View
I am calculating transient natural heat convection and for certain time interval the value of Rayleigh number is coming negative due to high ambient temperature as compared to surface temperature...
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