2.1 Predictive medicine?

Some experts now suggest that new knowledge of human genetics is likely to transform medical practice. They propose three main possibilities:

  • Genetics will lead to the classification of diseases on the basis of the underlying genetics or biochemistry, rather than by symptoms.

  • Genetic information will identify people who are likely to respond to drugs, or to be harmed by them (pharmacogenetics).

  • Genetic variation will be
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2.2 Persistent currents lead to constant magnetic flux

An important consequence of the persistent currents that flow in materials with zero resistance is that the magnetic flux that passes through a continuous loop of such a material remains constant. To see how this comes about, consider a ring of metal, enclosing a fixed area A, as shown in Figure 6a. An initial magnetic field B0 is applied perpendicular to the plane of the ring when the temperature is above the critical temperature of the material from which the rin
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2.1 Zero electrical resistance

In this section we shall discuss some of the most important electrical properties of superconductors, with discussion of magnetic properties to follow in the next section.

The most obvious characteristic of a superconductor is the complete disappearance of its electrical resistance below a temperature that is known as its critical temperature. Experiments have been carried out to attempt to detect whether there is any small residual resistance in the superconducting state. A sensitive t
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Acknowledgements

The content acknowledged below is Proprietary (see terms and conditions) and is used under licence. This content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Licence

Grateful acknowledgement is made to the following sources for permission to reproduce material in this unit:


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1.11 Summary

Rocks are classified into three types according to how they were formed. Igneous rocks are formed by crystallisation from the molten state; sedimentary rocks are deposited at the Earth's surface from water, air or ice; and metamorphic rocks are rocks of any origin that have been subsequently transformed (metamorphosed) by heat and/or pressure, often several kilometres below the Earth's surface.

Rocks are generally either crystalline, i.e. formed of interlocking mineral crystals, or frag
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1.10 Changing sea-level

Sedimentary rocks reveal how environmental conditions in Britain's geological past were extremely different from those of the present day (in fact ‘Britain’, like the rest of the Earth's geography is transitory when viewed in terms of the very long span of geological time). As well as evidence from sedimentary rocks, recent landforms also indicate that in the more recent geological past (within the Quaternary Period), sea-level was not the same as it is at present.

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1.5.5 Fossils and ancient environments

An essential component of any environment is the plant and animal life that is adapted to the prevailing conditions. Fossil plants and animals are therefore wonderful sources of information about ancient environments. Plants can leave behind remains ranging from roots, leaves and twigs to seeds and pollen. Leaves and twigs are relatively fragile, and require a comparatively low energy environment (e.g. the mudflats of an estuary) for their preservation. Seeds, pollen and spores are surprising
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3.3 Procedure by which Bills become law

In order to become an Act of Parliament a Bill will have to be passed by both the House of Commons and the House of Lords. A Bill may start in either the House of Commons or the House of Lords, with the exception of Finance Bills which always start in the House of Commons. A Finance Bill is introduced by the Government shortly after the Budget to bring the Government's tax proposals into law.

Before a Bill can become an Act of Parliament it must undergo a number of stages.


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Introduction

This unit is designed to introduce you to the supreme law-making body within the UK: the UK Parliament situated at Westminster, London. You will also examine the wide variety of sources that influence Parliament including constituents, pressure groups and Parliamentary subcommittees. This unit will also introduce you to the skills required in reading legal cases, reading and understanding Acts of Parliament, taking notes and summarising ideas.

This unit is an adapted extract from the co
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Design
This unit looks at the process of design – from assessing the complexity of design as an activity, to exposing the difficulty in making general conclusions about how designers work. You will be able to identify innovation in a wide variety of designed objects and evaluate the impact of this innovation. First published on Wed, 27
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Introducing corporate finance
This unit introduces you to the importance of finance and the role it plays in organisations. It explains the different functions of money and the ways in which finance is linked to organisational strategies. The unit also explores the ways in which finance is linked to the governance of organisations, how organisations fund their activities, and the role of the finance and accounting functions.Author(s): Creator not set

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