4.7 Gender and power in helping relationships

Activity 17

0 hours 30 minutes

Think about the following two scenarios.

  1. A female worker (e.g. social worker, nurse, resid
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1.3.3 Gamete production in men

A sexually mature man is producing sperm all the time at a rate of around 300–600 per gram of testis per second. This provides the 500 million or so which are released at each ejaculation. But the formation of an individual sperm takes about nine weeks (64 days). Sperm are produced in the testes, and production is most efficient at a temperature several degrees lower than the normal body temperature of 371°C. For this reason the testes (plural of testis) are suspended outside the body cavi
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Mythbusters explain the mentos and diet coke demonstration.
The mythbusters carry out a test to see what makes mentos and soda react. It all depends on surface area (01:57).
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De kosmos : De wetenschap vertelt
1.jpg

Dit dossier van EOS wetenschap bundelt artikels over onze kosmos. Volgende onderwerpen komen in dit dossier onder meer aan bod:

  • buitenaards leven; 
  • evolutie van het heelal;
  • kenmerken van de zon;
  • planeten in ons zonnestelsel;

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Thomas Burns Memorial Lectures 2012: Rev Dr Wiliam Willimon – The Future of Preaching
The Department of Theology and Religion presents lecture three of the 2012 Thomas Burns Memorial Lecture series. Given by the Reverend Dr William Willimon, Bishop of the United Methodist Church in Alabama, this presentation covers the topic “The Future of Preaching”. 2 August 2012.
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Everyone invited to Tom Cruise's 50th
Tom Cruise says everyone's invited to his 50th birthday do next year. (ROUGH CUT - NO REPORTER NARRATION)
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Sound Waves Underwater : Experiment with Sonar
This animation from the NOVA Web site describes how sonar uses sound waves to see underwater.
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2000 WGBH Educational Foundation. All rights reserved.

3.7.3 Oxidation sharpening

The all-important radius of curvature of the tip can be made smaller – both in the silicon nitride and pure silicon tips – by the trick of oxidation sharpening. Figure 15 shows the principle. The original tip is first heated to around 1000 °C in an oxidising atmosphere, such that the outermost micrometre
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#279: Willingly waived: Migrant workers trading away rights for access to jobs

Labor migration researcher Dr Martin Ruhs discusses the often thorny questions around the rights of migrant labor versus access to work. With host Peter Mares.