Vibratory screen also commonly referred to as gyratory separators or screening machines‚ are a traditional part of processing dry bulk powders. They classify materials by separating them by particle size through a screen mesh. Using a combination of horizontal and vertical movements‚ they spread the material over a screen in controlled flow patterns and stratify the product. For many years‚ the majority of vibratory separators had a rectangular or square design and employed a simple reciprocating
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Listening Vs. Hearing Listening versus Hearing by Robert M. Sherfield‚ Ph.D. http://www.netplaces.com/self-esteem/active-listening/listening-versus-hearing.htm There are weighty differences between listening and hearing. Hearing is an automatic response while listening is a voluntary action. Hearing has little to do with choice‚ while listening has everything to do with choice. Think of it in this light: Just because you have hands‚ this does not make you a painter‚ sculptor‚ or carpenter. Just
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PROJECT SYNOPSIS ON MICROCONTROLLER BASED ULTRASONIC DISTANCE MEASUREMENT ABSTRACT: The microcontroller based ultrasonic distance measuring device is a device used to calculate the distance between the ultrasonic transmitter/receiver and the object whose distance is to be measured. A microcontroller is used to calculate the delay time between the transmitted signal and the received signal. ULTRASONIC WAVES: Ultra means “beyond” and sonic means “sound”. Ultrasonic
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Indian Railways (reporting mark IR) It is an Indian state-owned enterprise‚ owned and operated by the Government of India through the Ministry of Railways. It is one of the world’s largest railway networks comprising 115‚000 km (71‚000 mi) of track over a route of 65‚000 km (40‚000 mi) and 7‚500 stations. As of December 2012‚ it transported over 25 million passengers daily (over 9 billion on an annual basis). In 2011‚ IR carried over 8‚900 million passengers annually or more than 24 million passengers
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MEDICAL APPLICATIONS OF ULTRASONICS The applications of ultrasonics in the medical field have involved analysis and treatment. The developments in the medical field appear to be very promising. The effect of ultrasonics on tissues has been investigated. The heating and mechanical effects have been isolated. The conclusion is that there is an effect outside of the heating effect. The effects of the changes produced by high intensity sound upon the central nervous system has been investigated
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SYNOPSIS OF MINOR PROJECT ON “Microcontroller Based Ultrasonic Distance Meter” SUBMITTED IN THE PARTIAL FULFILLMENT FOR THE AWARD OF THE DEGREE OF BACHELOR OF TECHNOLOGY IN ELECTRONICS AND COMMUNICATION ENGINEERING Submitted by Himanshu 1809263 K.shashwat 1809249 Gurmeet Singh 1809252 Under the guidance of Er.Banisha
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ULTRASONIC TESTING (UT) USEFUL FORMULAE 1. Velocity of Ultrasonic Waves in a medium (V) = f x l OR W here f = Number of cycles per second is called frequency. Measured in ‘Hertz’. Abbreviated as ‘Hz’. One Hertz is equivalent to One cycle per second l = Distance covered in one cycle is wavelength V= Velocity of Ultrasonic wave inside the medium in ‘mm/s’ 2. A coustic Impedance (Z) = V x r W here: Z= Acoustic Impedance r= D ensity V= Velocity 3. R eflection Coefficient
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How One Moth Species Can Jam Bats’ Sonar Systems In the article How One Moth Species Can Jam Bats’ Sonar Systems by Joseph Stromberg‚ we learn about a species of tiger moth native to the Arizona Desert that can detect and jam bats’ sonar systems. The moth’s unique ability allows them to evade bats successfully. Bertholdia trigona‚ are a species of tiger moth that can jam bats sonar “ability to ‘see’ through echolocation”. A group of wildlife biologist students led by colleague Aaron Corcoran
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ABSTRACT Ultrasonic range finder using 8051 A simple ultrasonic range finder using 8051 microcontroller is presented in this project. This ultrasonic rangefinder can measure distances up to 2.5 meters at an accuracy of 1 centi meter. AT89s51 microcontroller and the ultrasonic transducer module HC-SR04 forms the basis of this circuit. The ultrasonic module sends a signal to the object‚ then picks up its echo and outputs a wave form whose time period is proportional to the distance. The microcontroller
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Module 9 Non-conventional machining Version 2 ME‚ IIT Kharagpur Lesson 36 Ultrasonic Machining (USM) Version 2 ME‚ IIT Kharagpur Instructional Objectives i. ii. iii. iv. Describe the basic mechanism of material removal in USM Identify the process parameters of USM Identify the machining characteristics of USM Analyse the effect of process parameters on material removal rate (MRR) v. Develop mathematical model relating MRR with USM parameters vi. Draw variation in MRR with different process
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