4.3 A commercial implementation

In order to conclude this section I shall describe a commercial implementation of an object bus. It has been developed by a company known as SoftWired Ltd and is known as iBus. It is based on TCP/IP rather than UDP. The facilities offered by the iBus API provide developers with the facilities to construct objects which can subscribe to channels and to transmit any Java object to a channel. The code for a transmitter is shown below; the import statements are not shown. In
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2.4 Critical magnetic field

An important characteristic of a superconductor is that its normal resistance is restored if a sufficiently large magnetic field is applied. The nature of this transition to the normal state depends on the shape of the superconductor and the orientation of the magnetic field, and it is also different for pure elements and for alloys. In this subsection we describe the behaviour in the simplest situation; we shall discuss other more complex behaviour in Section 4.

If an increasing magnet
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4.5 A critique of substantial equivalence

In the late 1990s, the principle of substantial equivalence came under sustained attack, and at this point it is worth examining both the points of criticism and the responses. In October 1999, Erik Millstone, Eric Brunner and Sue Mayer published a critical commentary on substantial equivalence in the journal Nature.

Before you read some extracts from this article it is worth commenting both on the nature of the article and who the authors are. The article is a 'commentary' publi
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Scott Guthrie Announces Azure for Students through Microsoft Imagine

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Microsoft Imagine helps students of all ages learn to code and build their skills with free software and online learning.  Learn more at http://imagine.microsoft.com.

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4.1 Introduction

Nuclear power generation involves concentrated fissionable fuels which, after fission, leave significant quantities of fission-product isotopes, some of which are highly radioactive. Much of the criticism levelled against the industry falls under four main headings to which we have alluded in preceding sections:

  1. the operational safety of nuclear reactors;

  2. the biological effects of abnormal radiation levels arising from fuel transport,
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5.3 Mitochondrial adaptations

During the winter months, whilst hibernating vertebrates maintain a very low metabolic rate, major reorganization of mitochondrial metabolism occurs. The phenomenon has been studied in some detail in frogs which, although not hibernators in the true sense, can endure very low water temperatures under the conditions of profound hypoxia that exist when they lie dormant for long periods below the surface. In contrast to normoxic conditions, the muscle mitochondria of dormant frogs depress their
Author(s): The Open University

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