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2.5 Air circulation

At this stage, air circulation enters and plays a dual role. Firstly, winds transmit moisture horizontally from one location to another. In this way, moisture derived from oceanic evaporation can be transported many miles to a land mass. Secondly, convective or vertical currents arising from unequal heating or cooling can transmit moisture upwards. When it cools, some of the water vapour condenses. It is from these currents that most precipitation develops.


Author(s): The Open University

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Continuity of a Function
This video explains the three conditions that must be met in order for a function to be continuous at a certain point. The continuity of a function only exists if these three conditions are met. (0:55)
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Resource #14376
UNSPECIFIED - UNSPECIFIED Keywords:UNSPECIFIED
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3.2.2 Ethane cracking

Although ethane can be cracked thermally, the reaction is slow and does not necessarily yield ethylene at high severity. Careful control of reaction conditions, however, allows the reaction to occur

The yield of ethylene is typically nearly 50 wt% wi
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Virtual Maths, Shapes, Space and Measure, Sine, Cosine, and Tangent
Interactive simulation, formulae for sine, cosine and tangent
Author(s): Leeds Metropolitan University

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http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

2007.03.25-Smart Power: Leadership in Today's World
Hinckley Institute of Politics Forum: Presented by Joseph Nye, Professor of Inernational Relations and former Dean of the Harvard's John F. Kennedy School of Government and author of "The Powers to LEAD."
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Infinitives vs. Gerunds
This video is a lecture using typed slides that explains the difference between infinitives and gerunds.  The lesson begins with the definition of each part of speech.  The instructor uses examples of both parts of speech to help the viewer remember the difference between the two and how to use the parts of speech correctly. (05:06)

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Map Skills: The Use of Color

How are colors used on maps?  They use colors to show different countries, provinces, or states.  Colors are used to show different elevations on relief or physical maps, different vegetation, climate, or distribution of population.  Video gives examples of each type of map and explains how to use them.  Good video for beginning map readers. (02:31)


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2.2 The organisation: loyalty cards

Many supermarkets and other firms (such as petrol companies and airlines) use loyalty cards: cards that offer a customer some form of incentive, such as a future discount or gift, to continue buying from that firm. For example, the British supermarket chain Tesco issues such cards. The holder of a loyalty card is regularly sent vouchers which give the holder discounts from their shopping bills and also vouchers which enable them to gain a discount on items that the supermarket wishes to promo
Author(s): The Open University

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References

Anon. (2003) ‘Spy chief warns food industry over terrorism’, Environmental Health News, 24 October 2003, p. 2.
Cabinet Office (2003) Dealing with Disaster, revised 3rd edn, Civil Contingencies Secretariat.
Commercial Union Risk Management Ltd (1992) ‘Crisis: A timetable for recovery’.
Dodswell, B. (2000) A G
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Conclusion

In this course you have found out that:

  • The sensation of pain is caused by the release of a chemical (prostaglandin) that stimulates the nerve endings and sends an electrical message to the brain.

  • Pain can be reduced if the formation of prostaglandin can be inhibited.

  • Prostaglandin is formed, from arachidonic acid, in a cavity in the active site of the enzyme cyclooxygenase (COX).

  • Geometrical isomerism can b
    Author(s): The Open University

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Affirmative Action and Forced Busing
As blacks benefited from new voting rights and school desegregation, the workplace remained a hostile environment for some. Many businesses openly flaunted hiring policies that excluded blacks or confined them to menial jobs. (Video is narrated with slides and speeches.)

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1.6 Conclusion

This course has presented an overview of the ways in which organisms living in temperate habitats are adapted to survive the winter. The course has shown how a limited set of environmental changes associated with the onset of winter can lead to a diversity of adaptations and therefore a large diversity of species.

On the basis of the examples discussed in this course, we can identify four factors that contribute to the diversity of adaptive strategies for coping with winter.


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"National Interests, Regional Concerns: Historicizing Malayalam Cinema"
south asiaA talk by Muraleedharan Tharayil, Dept. of English St. Aloysius College, Elthuruth (University of Calicut, Kerala). Co-sponsors: the South Asia Seminar and the Center for Gender Studies.
Author(s): The Center for International Studies at the Univer

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The Amistad Trial
In 1841, the Africans on board the Amistad were ruled free by the Supreme Court and would be sent back to Sierra Leone. This three minute video deals with the aftermath of that trial. Students need to learn about the Amistad event first.
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Lump-sum Pension Payments: Who Are the Winners and Losers?
Private corporations will cheer the U.S. Treasury department's move on lump-sum pension payments, but policy makers must weigh its impact on retirees and taxpayers.
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1.1 Introduction to vitamins and why we need them

Before the 19th century, one of the hazards of long sea voyages was a condition called scurvy, whose symptoms were loss of hair and teeth, bleeding gums, very slow healing of wounds, and eventually death. Hundreds of sailors and explorers died from scurvy until a Scottish physician, James Lind, in the 1750s discovered that adding a daily portion of citrus fruit to the rations of those at sea could prevent the condition, whereas adding cider, vinegar or various other substances that he tested,
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1.1 The biological effects of ethanol

This section investigates some of the harmful effects that a high level of blood-ethanol can have on the body: both short-term problems such as ‘hangover’, and long-term health problems that are associated with regular heavy drinking. Whilst this section is primarily about the biological effects that ethanol has on various organs of the body, it is important to remember that the socioeconomic effects of heavy drinking are also very serious (Paton, 2005).
Author(s): The Open University

Nicole Atkins and XPN | 07/06/10
Singer-songwriter Nicole Atkins is performing at the XPoNential Music Festival on the Camden Waterfront this weekend. State of the Arts producer Christopher Benincasa chats with the Jersey shore native about sharks, couch surfing, touring in mini-vans, and, of course, making music. For more information about the festival, check out jerseyarts.com/festivals and xpn.org.
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Spanish Listening Comprehension for Absolute Beginners #19 - Talking About a Party in Mexican Spanis
  Learn Mexican Spanish with SpanishPod101.com! Do you find yourself only understanding bits and pieces of Mexican Spanish conversations? Do you spend hours trying to figure out what that person said to you in Mexican Spanish? Then this Mexican Spanish Listening Comprehension for Absolute Beginners series is for you! In each lesson of this five-part series, [...]
Author(s): SpanishPod101.com

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