Saturday, July 23, 2011

Aerosols Reduce Global Warming

Airborne particles from volcanoes and the burning of fossil fuels can offset  third of the hot sun caused global warming. A study at Boston University conclude that the use of fuel oil are soaring in China could offset the effects of carbon dioxide. "Since 2000, the aerosols in the stratosphere has led to levels of climate warming slows down and we will not see it without it," said John Daniel, physicists at the National Oceanic and Atmospheric Administration (NOAA).

Over the last decade, the number of aerosols in the stratosphere in a country continue to rise. Apart from the use of fuel oil it is also caused by smoke from the eruption of Mount Merapi. Researchers have analyzed several independent sources of satellite and ground some type of instrument. They found a clear increase of aerosols in the stratosphere since 2000.

"Aerosols in the stratosphere has increased by leaps and bounds and shocking at the time, almost doubled during the decade. Increased aerosols since 2000, implying a cooling effect of about 0.1 watts per square meter. This is enough to offset the heat of the sun at 0.28 watts per square meter due to the effects of global warming from increased carbon dioxide during the same period, "added Daniel, told TG Daily, Saturday (23/07/2011).

The increase in a decade daam aerosols in the stratosphere can be caused in part by the resources of nature such as volcanic eruptions are smaller. Then some human activity, which memancaran gases such as sulfur dioxide, which reacts in the atmosphere to form aerosol particles reflective.

If this continues to increase, then the temperature will not heat up quickly. But if they decline, then the temperature will rise even faster. "The background of Aerosols in the stratosphere more than we thought. The last decade has shown us that the eruption of Mount Merapi is not too large so that the aerosol becomes an important part of the climate," he added.

Lion So Aggressive After the Full Moon

A study reveals that humans have a greater risk eaten by lions after the full moon occurs. This discovery comes from studies in Africa on 500 attacks by lions on humans. A fairy story explains that the moon is a sign of crime or disaster. It is associated with werewolves and vampires.

Scientists have studied the records of the 500 attacks in the village singan Tanzania since 1988 to 2009. More than two-thirds, the victim was killed and turned into dinner the king of the jungle at night. Usually this occurs at 22:00 and during the full moon began to fade with a darker light. The lion is a very good hunter animal in a dark place and allow them to surprise their prey. When the full moon and they were all hungry after the full moon immediately ended their search for prey, in which man is one of their targets. This is a peak that is harmful to humans, especially the day after the full moon.

This pattern appears clearly when the researchers compared levels of attack to the moon phases. The attack was one-third more often during the second half of the cycle, when there is little or no moonlight at all. "People are beginning to be in danger during the 0-4 days of activity of the full moon, when the moon is close and the full moon occurs shortly after sunset," said Dr. Craig Packer, a lion from the University of Minnesota College of Biological Sciences in the United States.

Packer also explained that the danger was eventually declined as the normal and the nights when the moon looks bright. Lion attacks also increased during the rainy season. At that time, the moon is more likely obscured by clouds. "These findings provide new insight into human attitudes toward the moon. So we are always exposed to the risk of predators during the waning moon," the researchers said.

A Strange Animal Intangible Aliens

An animal that has no feathers on his head, big eyes like a monkey makes Henan residents panic and fear because they think the animal is an alien. A mother of Household, Xiping Mao turned on the alarm in his house after finding the creature who looks emaciated and malnourished like this to steal cucumbers from her flat.

"I find that scary alien-looking animals and animal species I have not seen this before," said Xiping. Local police could not believe what is said Mao. Until the animal is trapped in a dishwasher basket. After police arrived, Xiping immediately bring one of the policemen to see where the animal. Finally they decided to take him to the police station. Currently animal-sized 46 cm was still checked and identified local scientists. "The animal looks very thin so that the ribs easily visible through his flesh," said researcher in Henan Province, central China.

Android Apps There Are Lots of Malware

More than 800 applications Android contain malware that could leak personal data of its users. This was revealed by security firm that examines Dasient about 10 thousand applications for Android phones. They found that more than 8 percent of that application transmits user data to another computer.

Malware is designed to take control of your smartphone. For example, 11 of the application that contains malware known to send SMS automatically to all contacts on the phone like a spam email that takes over an account. Dasient CTO Neil Daswani explained that the number of malware-infected applications to grow until doubled in the last two years. It could be that users are also inadvertently install malware on one of the sites they visit.

Mode of spread of malware is called 'Drive-By Download' because users do not download suspicious files on purpose. One example that ever happens is when an address tried to lure visitors to malicious websites by promoting the 'key' to the popular game Angry Birds. Last month also emerged a malware that 'disguised' as an add-ons Angry Birds.

Lax regulation in the Android Market has been blamed for the rise of malware on the application. Developers did not have long to wait before their applications be approved as well as Apple's App Store is known to be very strict selection of users who do have to pay. The discovery is expected to encourage Google to do a more rigorous selection in choosing the application in the Android Market.

At least they should do a simple check to ensure that applications are free from malware. In addition to personal data, Android applications are also frequently infected divulge the IMEI number or IMSI number, and data on the SIM card can be easily copied or sold to illegal organizations that produce fake phones.