20 research outputs found

    Design of Microcantilever-Based Biosensor with Digital Feedback Control Circuit

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    This paper present the design of cantilever-based biosensors with new readout, which hold promises as fast and cheap “point of care” device as well as interesting research tools. The fabrication process and related issues of the cantilever based bio-sensor are discussed. Coventorware simulation is carried out to analyze the device behavior. A fully integrated control circuit has been designed to solve manufacturing challenge which will take care of positioning of the cantilever instead of creating nanometer gap between the electrodes. The control circuit will solve the manufacturing challenge faced by the readout methods where it is essential to maintain precise gap between the electrodes. The circuit can take care of variation obtained due to fabrication process and maintain the precise gap between the electrodes by electrostatic actuation. The control circuit consist of analog and digital modules. The reliability issues of the sensor are also discussed

    CLINICAL STUDY TO EVALUATE THE EFFICACY OF YOGIC SHUDDHIKRIYA (CLEANSING PROCEDURE) AND MADHUDAK (HONEY AND WATER) IN THE MANAGEMENT OF STHAULYA (OBESITY)

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    Life in today’s materialistic era, has become miserable. As a matter of fact, human life is becoming luxury oriented day by day despite all the odds. According to ecological approach, disease is nothing but a mal-adjustment of human being to his environment. The disruption in environment brings about lifestyle disorders. The sedentary lifestyle of today’s era leads to the non-communicable epidemic of Obesity. Hence for the management of Obesity the therapy which offers modification in the lifestyle will be selected from Yogic Shat-shuddhikriyas i.e. Kapalbhati in comparison with dietary therapy of Madhudak (Honey and Water) as mentioned by Ayurvedic sages. In the present study, 60 patients with features of obesity as per Ayurvedic classics and body mass index more than 25 kg/m2 were selected. This patients will be randomly divided into experimental and control group, containing thirty subjects in each. In experimental group patients were made to perform Kapalbhati yogic shuddhikriya daily at morning whereas in comparison for control group dietary therapy of Madhudak. The study reveals that there was a remarkable decrease in subjective and objective parameters in both the groups, but Kapalbhati therapy is found more effective in every aspects of obesity. Average percentage of relief in experimental group is 27.85% and in control group is 9.93%. Hence to prevent this smoldering problem of present era the ‘Sciences of life’ i.e. Yoga offers the lifestyle modifying, time effective, free of cost, objective therapy (Adravyabhoot chikitsa) through its basic principles

    Mems resonator filters

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    This book explores the challenges and opportunities of developing circuits with MEMS resonator filters. The replacement of classical electrical components with electromechanical components is explored in this book, and the specific properties of MEMS resonators required in various frequency ranges are discussed

    Modeling and characterization of surface roughness effect on fluid flow in a polydimethylsiloxane microchannel using a fractal based lattice Boltzmann method

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    In micro and nano flows, the fluid flow pattern is sensitive to many intrinsic parameters such as surface roughness. In this letter, we have presented the capture of variations in fluid flow in polydimethylsiloxane(PDMS) microfluidic channels with respect to surface roughness. The velocity of the fluid is measured experimentally and also simulated using a mesoscopic lattice Boltzmann method (LBM). For simulations, the surface roughness is implemented using a fractal based approach. The Weierstrass-Mandelbrot(WM) mathematical function is explored for realizing various rough surfaces by tuning the fractal dimension parameter. The results show that the computational fluid dynamics model, which incorporated surface roughness, has a better agreement with the experimental results than the model without roughness

    Surface roughness modeling

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