Tutorial 5&6: 1. A trickling filter has a diameter of 20 m and a depth of 2.5 m. It is operated with a direct recirculation ratio of 1.0‚ and the influent sewage flow rate is 3 ML/d. Influent BOD to the primary tank is 200 mg/L‚ and the BOD removal efficiency in that tank is 35 percent. Compute the organic load on the trickling filter. 2. A grit of specific gravity 2.8 flows into a grit chamber‚ 1.5-m wide‚ 10.5-m long and 2.5-m deep. The flow-rate of wastewater into the chamber is 2 m3/s.
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1. Sirius B is a white dwarf star‚ in orbit around Sirius‚ with a mass of 2.0 x 1030 kg (approximately the mass of the Sun)‚ and a radius of 2.4 x 107 m (approximately one-thirtieth of the radius of the Sun). a. What is the force on a 1.0 kg mass on the surface of Sirius B? [2.3 x 105 N] b. What is the acceleration due to gravity on the surface of Sirius B? [2.3 x 105 m/s2] 2. A 1000 kg communications satellite in synchronous orbit 42 400 km from the Earth’s centre gas a period of 24 h. Placed
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An Exploration of Supply Chain Management Practices in the Aerospace Industry and in Rolls-Royce by Mohit Tiwari Master of Business Administration Case Western Reserve University Submitted to the Engineering Systems Division in Partial Fulfillment of the Requirements for the Degree of Master of Engineering in Logistics at the MASSACHUSES INSt OFTECHNOLOGY Massachusetts Institute of Technology June 2005 JUL 152005 LIBRARIES © 2005 Mohit Tiwari. All rights reserved The author hereby
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The Apple iPhone provides its user with the ultimate mobile device which include high quality features and stunning design concept. The iPhone is a mobile phone‚ a highly useable widescreen iPod with touch screen controls and a Internet communications device‚ all rolled into one portable device making it an outstanding smartphone. The casing is small and lightweight which measures 115mm x 61mm x 11.6mm and weighs 135 grams. The casing comes is a selection of popular colors which include a sleek black
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advertising through self-regulation. Being the umbrella organization of the advertising industry‚ its mission is to practice world class advertising along with advocating professional ethics through responsible and truthful advertising. AdBoard was formerly known as the Philippine Board of Advertising . The board was formed as a result of a series of meetings in 1973 by leaders in the advertising industry. They felt the urge to commit themselves in creating a committee to achieve their goal in
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Uncertainty in the Movie Industry: Does Star Power Reduce the Terror of the Box O±ce?¤ Arthur De Vany Department of Economics Institute for Mathematical Behavioral Sciences University of California Irvine‚ CA 92697 USA W. David Walls School of Economics and Finance The University of Hong Kong Pokfulam Road Hong Kong Abstract Everyone knows that the movie business is risky. But how risky is it? Do strategies exist that reduce risk? We investigate these questions using a sample of over
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Chapter I PROBLEM AND ITS BACKGROUND Vision is our most precious sense. Our eyes are in constant use every waking minute of every day. The way we use our eyes can determine how well we work throughout our lifetime. Over eighty percent of our learning is mediated through our eyes‚ indicating the important role our vision plays in our daily activities. Vision disturbance is a silent enemy that only appears after a long period of continued stress. Many people in today’s world experience a number
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2.1 DEFINITION OF MICROCHIP According to the Microsoft Encarta Dictionary‚ “Microchips are small wafer of semiconductor materials‚ usually silicon‚ forming the base on which an integrated circuit is laid out‚ or such a wafer together with its integrated circuit”. It is a tiny silicon component made for incorporation into devices for increased functionality. 2.2 DESCRIPTION Several types of microchips are made today. Microprocessors are logic chips that perform the computations inside most commercial
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Dynamic Host Configuration Protocol (DHCP) "The Dynamic Host Configuration Protocol (DHCP) is a network protocol used to configure devices that are connected to a network (known as hosts) so they can communicate on that network using the Internet Protocol (IP)." [1] When a computer uses a static IP address‚ it means that the computer is manually configured to use a specific IP address. One problem with static assignment‚ which can result from user error or inattention to detail‚ occurs when two
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Flight dynamics –II Stability and control Prof. E.G. Tulapurkara Chapter 1 Introduction (Lectures 1‚2 and 3) Keywords : Importance of stability and control analysis ; brief historical background ; basic concepts – static stability‚ dynamic stability‚ longitudinal‚ lateral and directional stability‚ control fixed and control free stability ; controllability; subdivisions of the subject; course outline. Topics 1.1 Opening remarks 1.2 Brief outline of historical developments 1.2.1 Early developments
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