3.2 “Lab-on-a-Chip” A Lab-on-a-Chip (LOC) device‚ also known as a micro-total-analytical system (microTAS) or microfluidics device‚ is a device that can integrate miniaturized laboratory functions (such as separation and analysis of components of a mixture) on a single microprocessor chip using extremely small fluid volumes on the order of nanoliters to picoliters. From a technology categorization perspective‚ LOCs can be viewed as a subset of microelectromechanical systems (MEMS) and combine
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Prof. M.M.Mayuram Module 2- GEARS Lecture – 11 HELICAL GEARS Contents 11.1 Helical gears – an introduction 11.2 Helical gears – Kinematics 11.3 Helical gears – geometry and nomenclature 11.4 Helical gears – force analysis 11.5 Helical gears – bending stress 11.6 Helical gears – contact stress 11.7 Crossed helical gears 11.7.1 Tips for crossed helical gear design 11.1 HELICAL GEARS – an introduction In spur gears Fig.11.1 dealt earlier‚ the teeth are parallel to the axis whereas in helical gears
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fictitious spring with two horizontal degrees of freedom. The response quantities considered for the study are the top floor acceleration‚ base shear‚ bending moment and base displacement. It is concluded from the study that the displacement of the structure reduces as the damping of the restoring force device increases. Also‚ the peak values of acceleration‚ bending moment and base shear decreases as the damping of the restoring force device increases. KEY WORDS Base isolation‚ restoring force device
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CE 270 - Final Exam Problem No. 1. (20 points) A rectangular cross-section that is 50 mm wide and 250 mm deep is subjected to shear force of 22 kN‚ axial force (tension) of 16.5 kN and bending moment of 33 kN-m. Calculate and show the stress diagrams in the cross-section. What is the maximum normal stress‚ and where does it occur. What is the maximum shear stress and where does it occur. Problem No. 2 (20 points) Determine the principal stress‚ the maximum in-plane shear stress
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Jelly Optics Investigatory Project in Physics Chapter 1 The Problem and its Background Introduction When light hits a boundary between two substances‚ it often bends. This is called refraction. Refraction is the bending of a wave when it enters a medium where its speed is different. The refraction of light when it passes from a fast medium to a slow medium bends the light ray toward the normal to the boundary between the two media. Refraction is responsible for image formation by lenses
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are provided for applying loading to the beams. One set of dial gauges to 0.01 mm resolution‚ complete with mounting brackets are employed for the measurement of the beam deflection. A theory and experiment Work Sheet is provided for students to follow the appropriate procedure of operation and computation. Experimental Capabilities 1. To investigate the relationship between load‚ span width‚ height (depth) and deflection of a simply supported beam. 2. To ascertain the Coefficient of Elasticity
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produced dramatic increases in the x-ray bright ness until they are now a trillion times brighter than a conventional x-ray machine. When a charged particle accelerates it radiates photons or x-rays. For example‚ in a conventional x-ray tube the electron beam accelerates from a fila ment to an anode‚ where it decelerates rapidly at the anode and emits x-rays (shown schematically in Fig. 2). A different approach is to accelerate (or decelerate) the particle by passing it through a magnetic field. This is
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gases 3. Wood structures are usually not built taller than __ stories because of economical considerations. A. 1 B. 3 C. 4 D. 5 4. From a fire fighting standpoint‚ what is the advantage of the exposed wood framing in heavy-timber and post-and-beam construction? A. visibility of structural deterioration B. easier reapplication of fire-proofing materials C. higher combustion temperatures of exposed surfaces D. elimination of combustible voids 5. A typical means of achieving a one-hour fire
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Bending ? Twisting ? Rolling ? Pushing ? Swinging ? Pulling ? Swaying ? Stretching ? Rocking ? Turning ? Balancing Stationary Manipulative skills SOL K.1c ? Throwing ? Trapping ? Tossing ? Kicking ? Bouncing ? Striking ? Catching ? Rolling ? Dribbling SOL K.1d ? Throwing ? Trapping ? Tossing ? Kicking ? Bouncing ? Striking ? Catching ? Rolling ? Dribbling Gymnastics SOL K.1e ? Forward rolls ? Walks ? Balance beam ? Backward rolls
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Chapter 2 Mirror Design For Optical Telescopes The reflector mirror is the most important component of an astronomical optical telescope. This chapter provides discussions on the requirements for astronomical optical mirrors; the ways to reduce mirror weight‚ mirror cost‚ and mirror materials; the methods of mirror figuring‚ polishing‚ and surface coating; the design of mirror support mechanism; the concept of mirror seeing; and the stray light control. Emphasis is placed on various mirror
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