vegetables‚ fish‚ or meat was sealed in stoppered bottles and the filled bottles were immersed in boiling water; the heat sterilized the bottles and food alike. Appert knew nothing of enzymes or bacteria‚ nor did anyone else in his day. He did observe that when food was heated in the sealed bottles‚ the food remained good as long as the seal was not broken. The food remained edible until the bottles were opened. The process won him his prize in 1809; he started a canning factory and went on to found a
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Electron Gun - Effects of a Magnetic Field Purpose: The objective of this experiment is to study the motion of an electron in a magnetic field and to establish (show/verify) a relationship between the magnetic strength and the distance the electrons are deflected. Theory and Procedure: The electron gun is an instrument that consists of an electron source (which emits electrons and focus the stream into a beam)‚ a magnetic coil (which uses a voltage to create a magnetic field that deflects the beam away
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One thing that uses magnetic fields is the electric motor‚ which is used in many household appliances‚ such as electric fans‚ microwave ovens‚ and other small appliances. In this instance the electric motor has an electric current‚ giving it also this magnetic field. An electric motor converts electricity into mechanical motion. Most electric motors work by electromagnetism‚ but motors based on electrostatic forces also exist. The overarching concept is that a force is generated when a current-carrying
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INTRODUCTION Food deteriorate in quality due to a wide range of chemical and enzymatic reactions‚ added to this the consumer demands faster production rate for high quality food with “fresh-like” characteristics and long shelf life‚ leading to the application of thermal processes for food preservation. However this thermal treatments cause undesirable effects on food flavor‚ color and nutritional attributes such as protein and vitamin destruction. These market conditions together with the disadvantages
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Case Introduction Electro Industries are a large diversified manufacturer of computer systems‚ industrial electronics‚ electronic components and consumer electronics and a supplier of a broad range of services. Problems confronting Electro • Electro has incurred its first loss for the company in 15 years‚ despite sales growth of 20%. The net loss in 1974 was $5.7 million on sales of $875 million • Operational expenses and administrative expenses soared. • Stock price is low from 1968 till
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Food ©2007 Global Science Books Food Preservation – A Biopreservative Approach Iraj Rasooli Department of Biology‚ Shahed University‚ Opposite Imam Khomeini’s Shrine‚ Tehran-Qom Express Way‚ Tehran‚ Iran Correspondence: * rasooli@shahed.ac.ir ABSTRACT Preservative agents are required to ensure that manufactured foods remain safe and unspoiled. Antimicrobial properties of essential oils (EOs) reveal that Gram-positive bacteria are more vulnerable than Gram-negative bacteria. A number of EO
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generates a magnetic field. For a long time‚ it has been suggested that Earth’s magnetic field would eventually weaken. The field can change over time and may even occasionally flip‚ causing the north to become the south and vice versa. Now‚ new research‚ published on July 28th in Nature‚ states that Earth’s weakening magnetic field is actually a sign that another flip is to be anticipated. It is important to understand Earth’s magnetic field We owe some much of our livelihood to the magnetic field surrounding
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Section 10.10 Balancing Oxidation–Reduction Equations ENERGY General Chemistry 2 (Chem 112) Return to TOC Copyright © Cengage Learning. All rights reserved 1 Section 10.10 Balancing Oxidation–Reduction Equations UNIT 1: ENERGY MODULE 1: ELECTROCHEMICAL ENERGY MODULE 2: NUCLEAR ENERGY MODULE 3: FUELS Return to TOC Copyright © Cengage Learning. All rights reserved 2 Section 10.9 Oxidation–Reduction Reactions Redox Reactions • Reactions in which one
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generation the physical means such as gravity‚ vacuum or magnetic field is used for stabilization of the free flowing dry moulding materials. The development of unbounded casting process improves flexibility and enhances mould ability. The concept of unbounded casting is to change the kind of binder or to avoid substantial binder. Magnetic moulding is a type of unbounded moulding process in which a dry and free flowing magnetic steel shots or granules are used as mould materials
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Electro Inc. Case Analysis Who: Electro Inc.’s executive assistant When: 1987 Where: Calgary‚ Canada Electro Inc. is fast developing company which strive to build a high tech wonder company image‚ it also has clear market segmentation and specific strategies to penetrate this segment. However‚ in recent report‚ the company’s financial statement indicates that the company experience financial difficulties at this moment. Some managers believe that this difficulty is largely due to two projects
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