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passive-methods
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Design and Fabrication of a Spiral Microchannel for High Resolution Blood Cell Separation
, M.Sc. Thesis Sharif University of Technology ; Saeedi, Mohammad Saeed (Supervisor) ; Taghipoor, Mojtaba (Co-Supervisor)
Abstract
In medical science, preparing a high purity sample of certain kinds of cells plays an important role in studying the characteristics and functionality of cells, detecting in vitro harmful pathogens and helping to find ways of preventing and treating diseases that cause cellular disorders in the human body. The goal of this research is to improve the spiral microchannel with stair-like cross section in order to separate white blood cells from whole blood. First, the efficiency of this method was evaluated numerically, using a developed finite element model. Then, the desired microchannel mold was made using the micromiling method, and we fabricated the chip using soft lithography and pasting...
Experimental Effects of Employing Dynamic Absorbers on Vibration Behavior of Civil A/C Reinforced Panel
, M.Sc. Thesis Sharif University of Technology ; Hosseini Kordkhaili, Ali (Supervisor)
Abstract
The aim of this project is analysis of fuselage vibration reduction on turboprop aircraft, by using passive methods. In this method by design and installation of tuned vibrant absorber (a system composed of mass and auxiliary spring) which its natural frequency is tuned, taking into account the excitation frequency of the vibrant fuselage body under harmonic force. And the motion of the point which is connected to it, would be ceased. Considering the place limitations and weight in the aircraft design, the designed absorber with respect to space and occupied volume shall be mountable on the aircraft frames and for maximum reduction of skin vibrations and eventually damping of acoustic energy...