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Statistics |
| Unique Visitors: 433 |
| Total Unique Visitors: 611959 |
| Visitors Out: 2360 |
| Total Visitors Out: 2807 |
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| Soil Solarization: Concept and Benefits |
| 2011-10-08 09:02:00 |
Pests and soilborne diseases always cause severe damage to horticultural and field crops. With their presence, the desired output is greatly reduced, posing a heavy economic loss to farmers and growers. Hence, they must be eradicated. Several methods have been tried and practiced to address this issue. There are chemical applications like soil-applied pesticides that control weeds, nematodes, fungi, bacteria and soilborne diseases. However, the use of chemical pest controls are viewed undesirable because of their unfavorable effects on both humans and animals, the toxic residues they generate, and the high cost and complexity of their treatment. To avoid negative consequences, a number of nonchemical methods for controlling diseases and pests have been studied and applied. One such method is soil solarization. (image source)
Soil solarization is a pest and disease control technique that uses the radiant heat from the sun to eliminate many soilborne pat...
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| Ten Killer Diseases of Men |
| 2011-10-02 07:09:00 |
There are many threats to men’s health. Their occupation, food intakes, daily routines, and general lifestyle are some of the greatest factors that affect their health. Many of these threats are called as silent killers because they come undetected and have mild symptoms during the early stage. Across the globe, these killer diseases have claimed thousands of life as they become more susceptible to common cures and as men’s lifestyle becomes more uncontrolled.
So what are the greatest threats to men’s health? What killer diseases are most commonly experienced by men around the health? How severe are they?
1. Cardiac Arrest
Cardiac arrest is the number one killer of men. In many cases, they suddenly strike their victims dead without any trace of prior illness. This condition happens when the heart fails to contract effectively, thus ceasing the normal circulation of blood.
Coronary heart disease is the leading cause of sudden cardiac arrest. Like...
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| Ten Critically Endangered Eagles and Vultures |
| 2011-09-29 08:10:00 |
Eagles are some of the fiercest birds in nature. They belong to the family of birds called Accipitridae which also includes the hawks, kites, harriers, and even some vultures, particularly the Old World types. Though varying in size, these birds have one common feature – their strong hooked bills. With these bills, eagles and their relatives feed on a range of prey, from insects to medium-sized mammals. Hence, they are known as birds of prey.
However, they may not be that vicious since many of their kinds are already on the brink of extinction. These breeds are simply not endangered; they are critically endangered (as described by the International Union for Conservation of Nature or IUCN) that they face a high risk of being gone forever. Here are ten critically endangered eagles, vultures, and other birds belonging to the Accipitridae family.
Cuban Kite
Considered as subspecies of the Hook-billed Kite, the Cuban Kite is classified as critically enda...
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| Why Can Birds Fly |
| 2011-09-22 07:19:00 |
Since ancient times, man has been fascinated by the birds. These creatures can fly, while he cannot. It is this fascination that urged him to build the planes and balloons. It is his craving for knowledge that made him “fly”, almost like the birds… Those birds who never needed to study in order to fly…
But how do birds fly? What made them fly? What is the science behind it?
Birds Have Wings
Obviously, birds have so they can fly. But how do these wings work? They work differently when birds just glide (or soar) and when they flap their wings. Let us consider the first situation which Newton’s third law can explain. When birds’ wings are open, they push down air, and as the law says that for every force there is an opposite and reaction force, the air below pushes them up. The push partly comes from the angle which the wings are held, and partly from the curvature of the wings. The pressure above the wings would be lower since air travels mu...
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| Ten Marvelous Sea Cliffs in the World |
| 2011-09-18 10:31:00 |
image source
Cliffs are near vertical rock exposures and formations. They are produced by the processes of erosion and weathering over time. They are found on coasts, in mountainous areas, and along rivers. If found on sea, it is called as sea cliff.
A sea cliff is an erosional landform, produced by wave action, which is either at the seaward edge of the coast or at the landward side, and which denotes the inner limit of the beach erosion. They are created for millions of years, and this slow and creative process produced some of the world’s magnificent sites. Here are some ten of the world’s marvelous sea cliffs.
Cliffs of Moher
Found near Doolin in County Clare, Ireland, the Cliffs of Moher rise 120 meters (394 ft) above the Atlantic Ocean at Hag’s Head. The cliffs consist mainly of beds of Namurian shale and sandstone. There are many animals living on the cliffs, including an estimated 30,000 birds. Due to its breath-taking ...
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| Formation of Rocks: Classification and Process |
| 2011-09-15 11:17:00 |
Much of the Earth’s surface is covered by rocks. Even the soil where we stand takes its origin from the rocks. From the land to the sea, there are rocks. Everywhere, we see rocks. So what are rocks? What are their classifications? How are they formed?
The Earth’s outer surface, a solid layer called the lithosphere, is made of rocks. Rocks, or stones, are naturally occurring solid aggregates of minerals. They are being constantly formed, worn down, and then formed again in a process known geologically as rock cycle. It is like water cycle except that it takes much longer time, over thousands and millions of years.
Rocks are most commonly classified according to their mineral and chemical composition, texture, and the processes that formed them. With all these considerations, rocks are grouped into igneous, sedimentary, and metamorphic.
Igneous rocks are formed from cooled magma or melt. The magma is composed of various pre-exisitng rocks which have been subjected to melting at subd...
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| Ten Critically Endangered Parrots |
| 2011-09-13 12:05:00 |
There are many species and breeds of parrots, both in the wild and in captivity. But no matter how much their number is, the survival of their kind would always depend on humans who have the capability to care or destroy them. Many of these birds are in the brink of extinction and the IUCN (International Union for Conservation of Nature) has classified their status as Vulnerable, Endangered or Critically Endangered. Species under Vulnerable category faces high risk of extinction, very high risk for Endangered, and extremely high risk for Critically Endangered.
Though parrots are mostly seen in the wild, many of these birds are still threatened and endangered. Here are ten beautiful but critically endangered species of parrots.
Kakapo
Also called as owl parrot, the Kakapo is a large, flightless nocturnal parrot native to New Zealand. It is the world’s only flightless parrot. Its wings are only used for balance and support. At 60 centimeters (24 in...
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| How to Feed Piranhas |
| 2011-09-09 22:26:00 |
Piranhas have bad reputations, but their aggressiveness only happens when they feel threatened, trapped, or starving. They maybe vicious kind of fish but many aquarists take interest in keeping them in tanks. However, selling and possessing of piranhas is illegal in some countries so be sure to check on the legality of raising piranhas in your area before considering keeping them.
One of the difficult aspects in having piranhas as pet is feeding. There are simply no ready-made piranha foods that we can buy over the market. So what do piranhas eat? How do we feed them? What are the things to consider in feeding them?
In feeding piranhas raised in aquariums, here are some points to remember:
Contrary to common beliefs, piranhas are not only carnivorous. They are actually omnivorous or that they eat both meat and fiber. In the wild, piranhas primarily eat the scales and fins of other fishes and occasionally large quantities of plant f...
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| Ten Beautiful Breeds of Cockatoos |
| 2011-08-29 11:06:00 |
The cockatoo is one of the most favorite pet birds. It belongs to the parrot family and comprises around 21 species. This bird is mostly found in the Australasian region, including Philippines, Indonesia, Papua New Guinea, the Solomon Islands and Australia. Cockatoos are less colorful than the other parrots, being mainly white, grey, or black, and often with colored tail, crests, or cheeks. They are large birds with curved bills and showy crests. Despite their size, they are popular birds in aviculture.
There are several genera and subgenera of this bird. Here are ten of the most beautiful and noteworthy breeds of cockatoo.
Galah
The Galah is also known as the rose-breasted cockatoo, galah cockatoo, roseate cockatoo or pink and grey. Galahs are about 14 inches long with a pale grey to mid-grey back, a pale grey rump, a pink face and chest, and a light pink mobile chest. They can be found in almost all parts of mainland Australia. Galahs often flock and...
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| Solar Cooker: Types and Principles of Operation |
| 2011-08-26 09:44:00 |
With the continuous rise in the prices of basic commodities and the increasing threat posed by the use of fossil fuel, the need to harness free and renewable energy has gained much prominence. A very promising source of such energy is the sun which virtually cost nothing and pollution-free. One of the best technologies derived from the utilization of solar energy is the solar cooker.
A solar cooker, also known as solar oven, is a device that uses heat by concentrating or intensifying the heat from sunlight. Solar cookers are generally used for cooking, drying, and pasteurization, and are a form of outdoor cooking where sunlight is available. Many organizations are advocating on the use of such device, which is usually low-cost, because it helps slow down deforestation rate as gathering of firewood for cooking is avoided. Click here to read full article on "Solar Cooker: Types and Principles of Operation."
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