Sunday, 28 December 2008
Thursday, 25 December 2008
Wednesday, 17 December 2008
Tuesday, 16 December 2008
Monday, 15 December 2008
Friday, 12 December 2008
For obvious reasons, swimming near the glory hole is both prohibited and stupid. There are buoys strung across the lake to discourage boaters and swimmers from approaching the glory hole and the dam. Furthermore, the glory hole is well fenced off from the land. The eerie appearance of the spillway in operation attracts visitors, and when the spillway is dry the outlet downstream is popular with skateboarders .
Thursday, 11 December 2008
Features include a monthly round up of science ‘stories’ from around the world – which is a good way of keeping in touch with what is going on, and always provides an interesting snippet or two. There are always stunning photographs and a range of major articles each month e.g. the effect of eating cooked meat on human evolution, climate change and its implications for temperature and rainfall in the British Isles over the next 70 years (both in the November issue), the story behind an 800 metre high skyscraper planned for Dubai, and a stunning photo-essay on the Libyan desert (both in the June issue). There is also a quirky “your questions answered section”, and many short reports and articles on a whole range of topics.
In SCC current issues are held in the magazine racks (behind the dictionaries in the main Library), and past issues are archived in a box at the end of the general science section (on your right as you enter the Library), just before Physics and Chemistry proper.
The next time you are in the Library with a few minutes to spare – have a quick browse, you’re bound to come across something interesting!
This second prize was for her individual achievements in Chemistry, whereas her first prize (1903) was a collaborative effort with her husband, Pierre, and Henri Becquerel in Physics for her contributions in the discovery of radium and polonium. Her early researches were often performed under difficult conditions, laboratory arrangements were poor and both she and her husband had to undertake much teaching to earn a livelihood. She also received, jointly with her husband, the Davy Medal of the Royal Society in 1903 and, in 1921 President Harding of the United States, on behalf of the women of America, presented her with one gram of radium in recognition of her service to science. Mme. Curie died in Savoy, France, after a short illness, on July 4, 1934. To find out more about the life of Marie Curie click here.
Tuesday, 9 December 2008
- Did you know that a lightning bolt generates temperatures five times hotter than those found at the sun's surface!
- In addition, lightning strikes somewhere on the surface of the earth about 100 times every second.
- Each flash contains about one billion volts of electricity. That's enough energy to light a 100-watt bulb for three months.
- In the United States alone, lightning sets 10,000 forest fires and causes $100 million in property damage every year.
- Between 1940 and 1991, it killed 8,316 people in the U.S.
- Today the average number of lightning-related deaths in the U.S. is 80 a year.
- Not everyone who is struck by lightning dies.
To find out more about lightning click here.
Monday, 8 December 2008
Saturday, 6 December 2008
Friday, 5 December 2008
Thursday, 4 December 2008
Wednesday, 3 December 2008
Tuesday, 2 December 2008
Monday, 1 December 2008
Friday, 28 November 2008
Thursday, 27 November 2008
Wednesday, 26 November 2008
Tuesday, 25 November 2008
Monday, 24 November 2008
Over 50% of the human world’s daily calorie intake comes from the Gramineae, particularly rice, wheat, maize, sorghum and millet. Recent trials have also shown that oats and other kinds of grain may help to lower cholesterol levels, and thus reduce the likelihood of coronary heart disease, and some types of cancer. Many of us are not aware that grains contain all the major nutrient groups: carbohydrates, proteins, fats, vitamins, minerals plus of course fibre. 100 g of red winter wheat for example contains 71 g of carbohydrate, 12.6 g of protein, 12.2 g of dietary fibre, 1.5 g of fat and 3.2 mg of iron. When comparing modern grains to ancient grains, it has been found that ancient grains may have been even more nutritious.
Bamboo is also part of the grass family, and is usually found in warm or tropical regions. Bamboos are the tallest in the grass family as they can sometimes grow up to a height of 30 metres. Bamboo has many commercial uses, such as in manufacture of furniture, paper, water pipes and scaffolding, and is also used for fuel. Bamboo scaffolding is thought to be better at withstanding strong winds than comparable steel scaffolding. Bamboo shoots are eaten as a vegetable, and bamboo grains are eaten locally in several parts of the world. There are many different species of bamboo in the genus Bambusa.
There are between 9,000 and 10,000 species of grasses, many of which are of use to humans. Grasses are used as animal feed, either for direct grazing or for straw or silage. They are also cultivated as lawns and as coverings for the playing surfaces of pitches for sports such as football, tennis, golf, cricket, rugby, GAA and baseball. Ornamental grasses are sold in garden centres and grasses can also be used to make biofuel and as thatching for roofs.
Grasses grown for their seeds to be eaten are called cereals. Rice is the staple cereal in south and east Asia, maize in Central and South America, and wheat and barley in Europe and northern Asia. Wheat for example is used to make flour for bread and pasta, and can be fermented to make beer and vodka. One side effect of wheat consumption is coeliac disease – a condition resulting from a response of the immune system to a protein found in wheat called gluten. This condition seems to be particularly common in Ireland, especially in the west of the country – possibly due to ancient genetic migration patterns of human populations.
800 Million people world wide are infected with Hookworms! That's approx 12% of the entire human population, and as many as 35 people in St. Columba's!
The hookworm is a parasitic nematode worm that lives in the small intestine of its host, which may be a mammal such as a dog, cat, or human. Two species of hookworms commonly infect humans, Ancylostoma duodenale and Necator americanus. Necator americanus predominates in the Americas, Sub-Saharan Africa, Southeast Asia, China, and Indonesia, while A. duodenale predominates in the Middle East, North Africa, India and (formerly) in southern Europe. Hookworms are much smaller than the large roundworm, Ascaris lumbricoides, and the complications of tissue migration and mechanical obstruction so frequently observed with roundworm infestation are less frequent in hookworm infestation. The most significant risk of hookworm infection is anaemia, a lack of iron in the diet. The worms suck blood voraciously and damage the mucosa. However, the blood loss in the stools is occult blood loss (not visibly apparent).
Sunday, 23 November 2008
Saturday, 22 November 2008
Friday, 21 November 2008
Thursday, 20 November 2008
Wednesday, 19 November 2008
Tuesday, 18 November 2008
There are two resident species of seal in
Our friends at the Irish Seal Sanctuary in Garristown, north
Monday, 17 November 2008
Sound waves travel through the ear canal and make their way to the middle ear. The middle ear's main job is to take those sound waves and turn them into vibrations that are delivered to the inner ear. To do this, it needs the eardrum, which is a thin piece of skin stretched tight like a drum. The eardrum separates the outer ear from the middle ear and the ossicles What are ossicles? They are the three tiniest, most delicate bones in your body. They include:
- The malleus (say: mah-lee-us), which is attached to the eardrum and means "hammer" in Latin
- The incus (say: in-kus), which is attached to the malleus and means "anvil" in Latin
- The stapes (say: stay-peez), the smallest bone in the body, which is attached to the incus and means "stirrup" in Latin
When sound waves reach the eardrum, they cause the eardrum to vibrate. When the eardrum vibrates, it moves the tiny ossicles — from the hammer to the anvil and then to the stirrup. These bones help sound move along on its journey into the inner ear.
Friday, 14 November 2008
Check it out at http://www.scienceunleashed.ie/