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Home > All Images > 2006 > January > 25 Jan 2006

Images Dated 25th January 2006

Available as Framed Prints, Photos, Wall Art and Gift Items

Choose from 54 pictures in our Images Dated 25th January 2006 collection for your Wall Art or Photo Gift. Popular choices include Framed Prints, Canvas Prints, Posters and Jigsaw Puzzles. All professionally made for quick delivery.


IUD contraceptive and sperm cells Featured 25 Jan 2006 Print

IUD contraceptive and sperm cells

IUD contraceptive and sperm cells. Computer artwork of an intrauterine device (IUD, red and white, centre) in a woman's uterus, surrounded by sperm cells (white, not to scale). The IUD is a contraceptive device that is implanted in the uterus to prevent pregnancy. It does not interfere with the sperm cells (male reproductive cells), one of which may fertilise an egg cell (female reproductive cell). However, when a fertilised egg tries to implant in the wall of the uterus, the shape and material of the IUD disrupts this process. This IUD has a coil (red), made of a metal such as copper. If the implantation fails, the fertilised egg is lost during menstruation. This view looks upwards into the uterus. The loop and string at bottom are used to remove the IUD if it is no longer needed

© CHRISTIAN DARKIN/SCIENCE PHOTO LIBRARY

Transdermal drug delivery Featured 25 Jan 2006 Print

Transdermal drug delivery

Transdermal drug delivery methods, composite computer artwork. Transdermal devices deliver controlled doses of drugs through the skin directly into the bloodstream. At top is a transdermal patch. The drug is stored in the raised reservoir. This type of patch is commonly used for hormone replacement therapy (HRT) and nicotine patches. At centre is an electric patch. An electric current is passed through 2 electrodes on the skin's surface, causing the drug to be pushed through the skin. This process, iontophoresis, is being developed for large ionised drug molecules. At bottom is an ultrasound machine, which uses ultrasonic frequencies to transfer high molecular weight drugs through the skin, a process known as phonophoresis

© CLAUS LUNAU/SCIENCE PHOTO LIBRARY

Earth after global warming Featured 25 Jan 2006 Print

Earth after global warming

Earth after global warming. Computer artwork of a future Earth where the ice-caps have melted due to global warming. Greenland (green, upper left) has lost its ice-cap, and the Arctic Ocean is free of sea ice. Although global warming can be part of a natural cycle, many scientists believe that human activities have contributed to the observed global warming. Industrial pollution has increased levels of the greenhouse gas carbon dioxide. This traps the Sun's heat in the atmosphere, preventing it from being radiated back out from the ground into space. A rise in the average temperatures by a few degrees Celsius could melt the ice caps in a few hundred years, causing large rises in sea levels, plus more storms (hurricane, lower left) and increased desertification (Sahara, lower right)

© CHRISTIAN DARKIN/SCIENCE PHOTO LIBRARY