Iran Daily
April 26, 2006
Healthy Bones
Robo-Turtle Answers
Flippery Questions
There are more than 200 bones in the body. Their strength, den- cially vitamin D, magnesium and phosphorous. These are abundant in sity and mobility are vital to enable physical movement and pro- nuts, seeds, soya produce and wholegrains. * Include lots of phytoestrogens in your diet. These plant oestrogens Lack of exercise, poor diet, and hormonal and genetic factors can all help to slow bone loss and are found in soya produce, sesame, sun- affect bone strength and contribute to bone thinning, known as osteo- flower and pumpkin seeds, chickpeas, linseeds, alfalfa and the herb tal questions about how prehistoric beasts porosis. So bbc.co.uk has come up with some useful tips for having * If you're taking a calcium supplement, take it in the evening.
* Eat a diet high in calcium, which is found in nuts, seeds, soya pro- Calcium has a soporific effect and the uptake of calcium into the when it is best to swim with four flippers duce, wholegrains, vegetables, fish and dairy produce. ocean robots, with flippers. "The thinking * Increase your intake of essential fatty acids (EFAs) as these facili- * Get regular exposure to sunlight. This increases production of vita- is that if nature did it, it must be good," tate calcium absorption and may slow down calcium excretion and Madeleine is similar in size and weight to bone loss. EFAs are found in oily fish and various nut and seed oils. * Take regular weight-bearing exercise. Walking, skipping, swim- * Limit your intake of fizzy drinks, tea, coffee, sugar and bran, which ming, rebounding, racket sports and jogging are ideal. * Don’t drink alcohol and stop smoking, as both contribute to nutri- * Calcium absorption requires the presence of other minerals, espe- with different forms of flipper propulsion.
depending on how hard it is working.
Self-Destructing Comet
the same stiffness as a real turtle's, but are To Flash Close By
Light Source
percent less space using four flippers, and Pinned Down
could reach a cruising speed of 0.7 meters per second 20 percent faster by using two. HIV Drug Creates Resistance
We live in a universe filled with light, but astronomers have long wondered howmuch of the light comes from visible stars and galaxies, and how much of it is near-infrared afterglow leftover from the early days of the uni- Now, a team of researchers led by scientists at the Max Planck Institut has developed a way to tease apart these two types of light, writes space.com.
The universe's near-infrared light comes from a com- bination of observable galaxies and stars and also very ancient objects like the first stars ever formed. The sum of this light, which is the light emitted from all objects throughout the universe's history, is called the extra- In addition, "foreground light" is emitted by dust in the solar system, which radiates light in the same wavelength and makes it difficult for scientists to figure out how much light comes from each source.
The trick is to measure the star light in the space between galaxies, where there is no foreground light. pass. The Hubble and The researchers looked at the emission from two blazer galaxies roughly two billion light-years from Comet 73P/Schwassmann-Wachmann 3 is breaking up and will
Earth. Blazars produce high-energy radiation from make a close approach to Earth beginning 12 May.
The gamma rays produced by blazers become Senses Explained
slightly dimmed as they make their way to Earth.
The researchers installed four large telescopes in the By Mathematical Model
grasslands of Namibia in 2004 to these detect faint flashes of blue light emitted when high-energy Since then, they have accumulated over 80 hours of observation on the two blazars. By considering the maximum possible brightness of each blazar, the researchers were able to estimate the dimming of Knowing the amount of dimming makes it possible for scientists to estimate the EBL between the blazar and Earth and thus figure out the amount of starlight.
Through this process, the study concludes that most "excitable elements," such as neu- of the EBL comes not from the earliest stars but from the local galaxies, a group of about 30 galaxies that Long & Short Term Rentals
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