Science

Wednesday, 1 January 2014

Dolphins are regarded as the second smartest animal alive,

Dolphins are regarded as the second smartest animal alive, and are only outwitted by humans. Compared to other animals their size, dolphin brains are five times larger. Dolphins have been shown to be self-aware, and are capable of a wide range of emotions.


THE GIST
- Without any formal training from humans, certain bottlenose dolphins in Brazil are helping fishermen with their catches.
- The dolphins round up the fish and alert fishermen with signals as to when and where nets should be thrown.
- The dolphins that help the fishermen have high cooperation and social skills.
Certain bottlenose dolphins in Laguna, southern Brazil, have apparently taught themselves to work as a team with artisanal fishermen, creating a win-win for both the marine mammals and humans.
A study on the dolphins, published in the latest Royal Society Biology Letters, has found that the most helpful ones also turn out to be particularly cooperative and social with each other, perhaps explaining why some wild dolphins decide of their own free will to work with humans, while others do not.
"Through highly synchronized behavior with humans, cooperative dolphins in Laguna drive mullet schools towards a line of fishermen and 'signal,' via stereotyped head slaps or tail slaps, when and where fishermen should throw their nets," wrote lead author Fabio Daura-Jorge of the Federal University of Santa Catarina.with colleagues.
NEWS: Dolphins: Second-Smartest Animals?
The effort is not entirely charitable on the part of the dolphins. Fish that escape the nets often swim right into the mouths of the dolphins, which have learned to wait for that fulfilling moment.
Daura-Jorge and his team conducted boat surveys over a two-year period, collecting photo identification data and other information on the dolphins. Any that teamed up with humans for fishing was classified as "cooperative." The others were classified as "non-cooperative."
The researchers next used computer modeling to identify social relationships among the dolphins. "Cooperative" dolphins turned out to spend more time together, even when not assisting humans. They appeared to have their own social network within the larger local population of bottlenose dolphins.
The scientists suspect that "ecology, genetics and social learning" could be driving and maintaining the wild dolphin subset's unique relationship with humans. Interestingly, the phenomenon seems to mirror how the Brazilian fishermen learn their trade.
"The human side of this dolphin-fishermen interaction is maintained through inter-generational information transfer, that is, teaching by elders, and it is likely that a similar process is used to transmit complex behavioral traits between generations of dolphins, as found in other localized behaviors, such as 'sponging' in Shark Bay, Western Australia

Please follow the link provided below and like fanpage, thanks. 
https://www.facebook.com/pages/Amazing-Facts/757842124242697

Discovered! Most Earth-Like Alien Planet & 2 Other Possibly Habitable Worlds

This artist's concept depicts Kepler-62f, a planet 1.4 times the size of Earth that circles in the habitable zone of its host star. The small shining object at right is Kepler-62e, another potentially habitable world in the five-planet system.



NASA's Kepler space telescope has discovered three exoplanets that may be capable of supporting life, and one of them is perhaps the most Earth-like alien world spotted to date, scientists announced today (April 18).
That most intriguing one is called Kepler-62f, a rocky world just 1.4 times bigger than Earth that circles a star smaller and dimmer than the sun. Kepler-62f's newfound neighbor, Kepler-62e, is just 1.6 times larger than Earth, making the pair among the smallest exoplanets yet found in their star's habitable zone — the just-right range of distances where liquid water can exist on a world's surface.
Kepler-62e and f, which are part of a newly discovered five-planet system, "look very good as possibilities for looking for life," said Kepler science principal investigator Bill Borucki, of NASA's Ames Research Center in Moffett Field, Calif

Scientist Spotlight: In Memoriam 2013

Before 2013 comes to a close, let’s take a moment to honor some of the greatest minds that we lost this year.
On November 20th of this year, Nobel laureate Frederick Sanger passed away at the age of 95. Sanger worked with bovine insulin and was able to determine the protein’s structure. If insulin had a set sequence, he reasoned, then the same must be true for other proteins. He eventually showed this to be true and was awarded the Nobel Prize in Chemistry in 1958. 
After working with protein, Sanger shifted his attention to nucleic acid. He devised a new method for sequencing DNA and would be awarded a second Nobel Prize in Chemistry in 1980 for the technique.
He is currently the only person to have received the Nobel Prize in Chemistry twice and is one of only four scientists to have received the Prize twice.
Astrophysicist Margherita Hack passed away on June 29 at the age of 91 after an extended illness. Hack was most well known for her science writing and her uncanny ability to explain difficult astrophysical concepts in simple language.
She became the first woman to head the Trieste Astronomical Observatory in Italy in 1964 and held the position until 1987. During that tenure, she used her position to advocate science on Italian television programs.
In 1995, the asteroid 8558 Hack was named to honor her and her contributions to science. Upon her death, she donated her personal library to the city, totaling more than 24,000 books on the subject of astrophysics.
Nobel laureate Donald Glaser passed away at the age of 86 on February 28. He had a degree in physics and mathematics before eventually getting a Ph.D. in physics. He began teaching at the University of Michigan where he would begin his research into subatomic particles.
His research eventually led him to the creation of the bubble chamber, which allowed him to observe elementary particles much more clearly and quickly than the standard cloud chamber. The bubble was filled with ether, though hydrogen also proved useful. This invention garnered him the Nobel Prize for Physics in 1960.
Nobel laureate François Jacob passed away at the age of 92 on April 19. He was a molecular biologist who worked extensively with metabolic enzymes in bacteria and bacteriophages. He had initially hoped to become a surgeon, but injuries sustained while he was a French medical officer during WWII forced him to refocus his specialty.
In 1965, Jacob received the Nobel Prize in Medicine for determining how the genetic code impacts synthesis of viruses and regulates enzymes. This involved describing a host of new regulatory pathways, including operons, regulatory genes, messenger RNA, and allosteric proteins.
Neurologist and Nobel laureate David Hubel passed away on September 22 at the age of 87 from kidney failure. His research career began while working at Walter Reed Hospital during the Korean War, when he first began investigating the visual cortex of cats. He had invented a microelectrode which he could use to visualize nerve impulses.
After he was out of the Army, Hubel began working at Harvard Medical School where he continued his research. His microelectrode gave incredible insight in regards to identifying and describing the simple and complex cells that make up the primary visual cortex. This, along with introducing the neurons that are the ocular dominance columns, earned Hubel and his research partner the Nobel Prize in Physiology or Medicine in 1981.
Famed oncologist Jane C. Wright passed away at the age of 93 on February 19. Her cancer research allowed her to develop major strides in chemotherapy, which would end up saving or extending countless lives. One of the most notable differences in her technique versus other cancer researchers was the fact that she used cultured human tissue to test chemotherapy medications instead of merely relying on mouse models.
Both Jane and her sister would become third generation physicians, which was no easy task for African-American women in the 1930s and 40s. She became chief resident while working at Harlem Hospital, and she went on to head various departments at different facilities before ultimately ending up at New York Medical College as the associated dean of the Cancer Chemotherapy Department. Throughout her career, she received many accolades, including becoming the highest ranked African-American physician (including males and females) working at a medical college in 1967.
The pioneer of in vitro fertilization, Sir Robert Edwards, passed away on April 10 at the age of 87 after an extended bout of lung disease. He is most well known for his fertility research and for co-developing a technique that would allow infertile couples to conceive a child. 
IVF is performed by fertilizing an egg in a dish, and then placing the egg directly into the uterus. The first “test tube baby” was born on July 25, 1978. Since then, an estimated 4 million babies have been born using Edwards’ technique. IVF was viewed as such an important development on the front of human reproduction that he was awarded the Nobel Prize in Physiology or Medicine in 2010.
Astronaut Scott Carpenter passed away at the age of 88 on October 10, following a stroke. He was one of the original seven Mercury Astronauts and was the second American astronaut to orbit the Earth, but the fourth American in space.
Carpenter began his career as a pilot in the US Navy, first flying P2V Neptunes in the Korean War, and then later becoming a test pilot. He served as a backup for John Glenn during the first orbital mission, but did not go into orbit until three months later. He orbited Earth three times for nearly five hours before returning to the ground.
Geneticist Obaid Siddiqi passed away on July 26 following a traumatic brain injury sustained during a car accident at the age of 81. He worked extensively on Drosophila melanogaster and completed research throughout the United States and England before returning to his home country of India to bolster biological research there.
In 1962, he founded the Molecular Biology Unit at the Tata Institute of Fundamental Research. In the early 1990s he became the director of the Institute’s National Center for Biological Sciences where he worked until his death. Throughout his career, he received several honorary doctorates and awards, including the Padma Vibhushan and Padma Bhushan, which are the second and third highest civilian honors in India, respectively.
Engineer and physicist Fred Kavli passed away on November 21 at the age of 86 after a yearlong battle with cholangiocarcinoma, a cancer of the bile ducts. He studied physics in school but went on to build a successful company manufacturing aeronautical parts. Once he sold his company in 2000, he dedicated the rest of his life to philanthropic endeavors that support scientific discovery. 
In 2008, he created the Kavli Prize which celebrates achievements in three categories: astrophysics, nanoscience, and neuroscience. The award is given biannually and consists of a scroll, a commemorative medal, and $1,000,000.
- See more at: http://www.iflscience.com/plants-and-animals/scientist-spotlight-memoriam-2013#sthash.oed874Ze.dpuf

Eclipse Photograph Exposes Details of Both Sun and Moon

July 22, 2009, brought the longest total solar eclipse that Earth will witness in the 21st century. Visible within a narrow band snaking across Asia and the Pacific Ocean, the totality of the eclipse lasted up to six minutes and 39 seconds, a duration that will not be surpassed until 2132. At Enewetak Atoll in the Marshall Islands, where the first hydrogen bomb was tested by the U.S. in 1952, the totality lasted more than five and a half minutes.

Miloslav Druckmüller, a mathematician at the Brno University of Technology in the Czech Republic, and his colleagues were on Enewetak as the eclipse's shadow raced toward them from the northwest at more than twice the speed of sound. This composite of 31 images from the eclipse shows the solar corona, the wispy "atmosphere" of the sun peeking out from behind the moon as well as the cratered, rayed surface of the moon itself.

Druckmüller, who specializes in eclipse photography, wrote a 2006 article forScientific American explaining some strategies for capturing such phenomena. But aspiring eclipse shutterbugs will have to wait—the path of the next total solar eclipse, in July, will barely touch land, and the occultation of November 2012 will just graze northern Australia. The next total solar eclipse with significant land coverage will cross Indonesia in 2016.

Monday, 2 December 2013

How to Drift a Car with Hand Brake - A Drifting Beginner Lesson

What is drifting exactly? Drifting is a driving technique and a motor sport where the driver intentionally oversteers the car, causing loss of traction in the rear wheels through corners, while preserving vehicle control and a high exit speed.

Before I begin to show you how to drift, you need to be aware several things:
  • Drifting is considered dangerous and illegal on street
  • There will be some potential mechanics breakdown to your car if you do too many times without proper maintenance to the car.
  • Always practice where you are permitted to, or go to local drifting event where there are experienced drifters who can instruct you so you don't get caught by the police like I did. :)
  • Prefer Rear-Wheel drive type cars with LSD (Limited Slip Differential).

So are you ready to drift?
There are several techniques that can help you initiate your drift. After your car started to slide, the rest is all about your steering and gas pedal control.

Hand brake technique
This is usually the easiest and most common way to start off with. All beginners will have to get familiar with this technique first. If you are scared at first, you should also practice this technique until you are not afraid of the car being sliding.

180 Degrees Turn
In an empty lot, setup a cone in the middle. Drive up to the cone and rip the handbrake when you are almost approached to the cone in an attempt to do a 180 turn. Practice until you are no more and no less than 180 degrees from where you started. Remember to practice both left and right 180 degrees.

90 Degrees Turn
It's very similar to 180 degrees turn, but this requires controlling how hard your rip the ebrake. Practice until you are no more and no less than 90 degrees from where you started. Make sure to keep your car going after the drift.

360 Degrees Turn (Donut)
Now, this is more of acceleration and handbrake control together. You start the same ways you are going to do a 180. Once your car start to drift, you need to tap on your gas pedal to give a little more spin to your rear tires so your drift can keep going. This is often a little hard for beginner, because too much gas will cause your car oversteer too quick, and too less gas will not make your car keeps sliding. You need to get a feel to this and keep modulating gas pedal in order to maintain a nice 360 degrees turn around the cone and not hitting it or being too far from the cone. Practice in both clockwise and counterclockwise motion.

After you have mastered all three, then you should be very comfortable drifting around all kinds of corner with ebrake technique. Remember gas and steering control play very important part in drifting, and practice makes perfect. If you happen to spin out your car or loss control, don't be disappointed, just learn from your mistake.

One last thing I would like to point out is that drifting really can damage your car very quick, and car maintenance is really important. If you are serious in drifting, you should prepare your car in order to sustain all the drifting activities and damage. A lot of your mechanic parts will wear out very fast. It's considered best if you replace better performance parts for your car, not only it can help you learn drifting faster, it also provide better performance. If you don't have any mechanic skills like I was, perhaps you should buy a Factory Service Manual for your car. You can learn from the manual and build up your mechanical knowledge about cars. It really comes very handy in everyway if you encounter any car problems or you want to upgrade your car parts, because in the manual it teaches you step by step procedures on how to do these types of things.

Overall, make sure you practice drifting in a save environment, such as local drift event, so you don't damage other people's properties or hurt any people. Also always keep your car up to maintenance schedule, so your car won't be damaged in the long run. Other than that, just go out and have fun!

What Drift Car Do You Drift With?

  •  Toyota Corolla AE86
  •  Nissan S13
  •  Nissan S14
  •  Nissan S15
  •  Nissan GTR
  •  Mitsubishi Lancer Evolution
  •  Subaru Impreza
  •  Others
See results without voting

AE86

Drifting Video How-To eBrake Drift

http://www.youtube.com/watch?v=UyG0mWtcp6Y#t=33