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3.5 Birth control

The fertility decline in Britain was not the direct result of social policy aimed at reducing the birth rate. The deliberate use of birth control was widely condemned as unnatural and immoral by the medical profession, the church and a wide range of conventional opinion, even though doctors and vicars were the first to limit their own families. There was widespread ignorance about the mechanics of human reproduction and how to control it, but for those in the know there were many methods of c
Author(s): The Open University

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3.1 Lifestyle choices

Health is generally considered to be the absence of disease. However, the absence of any symptoms of disease may cause us to mistakenly believe we are healthy. We can't see inside our arteries to know how blocked up they are with fatty deposits without specialised equipment, but that doesn't mean it isn't gradually happening.

You may consider that your heart is healthy. What are your chances, as a member of the general population, of developing cardiovascular diseases now, next year or
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4.1 Using memories to order narrative

The philosopher John Locke made the assertion that individual identity is inextricably linked to memory – we are only what we remember being. Memory is a central part of how we think of ourselves, and indeed a central strand of what we might know. Memory is not simply a mechanical process. It works in various ways and you will use it in various ways in your writing. If you study A215 Creative writing, the Open University course from which this course was extracted, you will have the
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Mécanismes fondamentaux en thermochimie de la biomasse (Vidéo)

Dans cette vidéo, Gilles Vaïtilingom propose un cours développé par Laurent Van de Steene (CIRAD). L'objectif est d'expliquer les grands mécanismes de valorisation énergétique de la biomasse par voie thermochimique : pyrolyse, torréfaction, combustion et gazéification.


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Introduction

For astronomers, the Sun is fascinating because it is our nearest star. By studying the Sun, they can gain an insight into the workings of the other millions of stars that are visible in the night sky. Learning that the Sun is a star can be a little surprising. After all, the Sun is a brightly glowing, yellow object - so bright that it is dangerous to look at it directly, and so hot that we can feel its radiation warming the whole Earth. Stars, on the other hand, are mere silver
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Keep on learning

Study another free course

There are more than 800 courses on OpenLearn for you to
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Amazing Ferrofluid
Ferrofluid is a magnetic liquid. It is composed of tiny nanoparticles of
magnetic material. It flows like a liquid and attracts to a magnet. A
personal favorite.

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Conclusion

This free course provided an introduction to studying sociology. It took you through a series of exercises designed to develop your approach to study and learning at a distance and helped to improve your confidence as an independent learner.


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The Gold Of The Andes
This video clip is a short film about a journey to source one of the most luxurious materials in the world. The Incas believed the Vicuña animals were  rewarded with a coat of pure gold in return for giving life to their civilization. They called it “The Gold Of The Andes”. (7:17)
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8.3 Academic arguments

You have looked at some examples of everyday arguments, now look at a short example of an academic argument.

Activity 25

Read the argument below. Compare and contrast it to the previous examples of arguments you have looked at ('W
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6.2 Working with bits

You may have met the term bit, perhaps in connection with computers. The term 'bit' is also important in communication systems. It is an abbreviation for 'binary digit'. A binary digit can have just one of two values: it can be either 1 or 0. Pulses can be represented by 1s and 0s, that is, as bits, and so it is convenient to think of streams of 1s and 0s being conveyed along the communications link.

The rate at which the 1s and 0s are conveyed is known as the data rate or
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2.7 Fluorine (F)

Fluoride ions (F) are rare in foods, though some are found in tea and in seafood. However, fluoride does occur naturally in some water supplies, derived from the rocks through which the water flows. Its only role in the body appears to be to help to protect teeth from decay.

The stages of tooth decay are as follows:

  • bacteria live in saliva on teeth (form plaque)

  • produce lactic acid → dissolves calcium salts in tooth
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3.5.1 Final arousal

Emergence can be viewed as the final step in the series of periodic arousals. Instead of re-entering hibernation, the animal maintains the euthermic condition. The cue for maintaining this final arousal is probably not temperature, as some species emerge when T a is well below zero. It is also difficult to see how arousal could be affected by daylength, since the hibernating animal is usually underground in a cavity or a burrow. Perhaps fat or food stores reach a minimum lev
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Content Marketing is About Trust, Not Just Reach
Viral videos or hashtag campaigns won’t convert customers unless they build trust and confidence with their audience.
Author(s): David Dubois, INSEAD Assistant Professor of Market

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Rights not set

RAF Wendling - USAAF Station 118
A photographic record of the airfield, the surviving buildings and the wall art contained therein
Author(s): Evelyn Simak

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Rights not set

2.4 Rapid serial visual presentation

It has been known for a long time that backward masking can act in one of two ways: integration and interruption (Turvey, 1973). When the SOA between target and mask is very short, integration occurs; that is, the two items are perceived as one, with the result that the target is difficult to report, just as when one word is written over another. Of more interest is masking by interruption, which is the type we have been considering in the previous section. It occurs at longer S
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Festival of Britain AA001685

*

Royal Festival Hall, Belvedere Road, South Bank, Lambeth, London. The hall and shot tower from Hungerford Bridge. The tower was built in 1826 and incorporated into the development of the bank for the Festival of Britain in 1951. It was demolished shortly afterwards. Photographed by S W Rawlings.
© Historic England


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Module team

The Open University course team

Course Team Chair of Production

Gillian Rose, Professor of Cultural Geography

Course Team Chair of Presentation

Chris Brook, Senior Lecturer in Geography

External Assessor

Peter Jackson, Professor of Human Geography, University of Sheffield

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Acknowledgements

The content acknowledged below is Proprietary (see terms and conditions) and is used under licence.

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

Course image: Stephane Venne in Flickr made available under Author(s): The Open University

Magical Nature Journey - The Forest
Magical Nature Journey DVD is an innovative learning experience for your child inspired by perhaps the wisest parent of them all - Mother Nature. This is the 'Forest' section from the video. A diverse range of patterns, shapes, colors, textures and sounds found exclusively in nature are utilized in a gentle and soothing way to help enhance the development of your baby's brain. Exciting close encounters with a wealth of wonderful animal and plant life and multiple color, counting and naming seque
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