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17 results on '"Durairaj, R.B."'

14. Experimental investigation on surface radiation properties’ degradation of solar collector receiver tube material

Author

Mageshwaran, G., Ramachandran, S., Iyappan, G., and Durairaj, R.B.

Abstract

ABSTRACTIn this study, we have investigated the degradation characteristics of surface radiation heat transfer properties of stainless steel 304. The emissivity (ε) and absorptivity (α) of stainless steel has been measured for a surface unexposed to sunlight and that exposed to sunlight for various time intervals (240, 480, 720, and 960 h). The temperature dependence of these properties is also measured for the temperature range of 30–300°C at 10 equal intervals. It is observed that the emissivity of the material increased when it is exposed to sunlight and the temperature dependence is very strong beyond 180°C. The absorptivity of the material increases first and then starts to decrease with exposure time. The combined effect of decrease in absorptivity and increase in emissivity leads to reduction in aS/E ratio, which results in a higher rate of radiation loss for exposed surfaces when compared to that for the unexposed surfaces.

Published
2017
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16. Nano robots in Bio medical application.

Author

Durairaj, R.B., Shanker., J, and Sivasankar, M.

Abstract

Nano-robots are the robots that are simply known as that controllable machines at the nano (10−9) meter or molecular scale, composed of nano-components. More specifically, nano robotics refer to the still largely hypothetical nanotechnology engineering discipline of designing and building nano robots. Even though the field of nano robotics is fundamentally different from that of the macro robots due to the differences in scale and material, there are many similarities in design and control techniques that eventually could be projected and applied. Due to the modern scientific capabilities, it has become possible to attempt the creation of nano robotic devices and interface them with the macro world for control. There are countless such machines which exist in nature and there is an opportunity to build more of them by mimicking nature. Nowadays these nano robots plays a vital role in the field of Bio Medicine. Especially in the treatment of cancer, Cerebral Aneurysm, kidney stones removal, also to remove the defected part in our DNA structure and some other treatments that have the greatest aid to save human lives. This paper guides to the recent research on nano robots in the Bio medical applications. [ABSTRACT FROM PUBLISHER]

Published
2012

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