new finding

A new finding by Harvard stem cell biologists turns one of the basics of neurobiology on its head -- demonstrating that it is possible to turn one type of already differentiated neuron into another within the brain.

Current Affairs

1. The Nation celebrated the 64th Republic Day yesterday with special parades and display of the rich cultural heritage and the armed forces might and achievements in various fields.


2. Google yesterday commemorated India's 64th Republic Day with a doodle featuring a collage of our national symbols.

The doodle features India's national animal, the Royal Bengal Tiger, and its national flower, the lotus.


3. 108 eminent persons get Padma Awards: Pranab Mukherjee, the President of Union of India on 25 January 2013 approved conferment of 108 Padma Awards.


4. Victoria Azarenka of Belarus has won the Women’s Singles title of the Australian Open Tennis tournament at Melbourne.


5. Top seeded American brothers Bob and Mike Bryan won the men's doubles title.


6. Andy Murray became the first Briton to reach three Australian Open finals after ending his Grand Slam hoodoo against Roger Federer in a five-set thriller.


7. Dharamsala set to host fifth ODI between India-England.

Some facts about Tigers

1) The night vision of tigers is 6 times better than humans.

2) The stripes on each tiger are unique, like human fingerprints.

3) Tigers do not normally roar at other animals, but instead they roar to communicate with far-off tigers. A tiger about to attack will therefore not roar, but might hiss and fuff instead.

4) Tigers can bite through bones with their powerful teeth and jaws. They will break the neck vertebrae of prey simply by biting straight through them.

5) A group of tigers is called an ambush or a streak.

Giant tortoises

Giant tortoises are characteristic reptiles of certain tropical islands.Often reaching enormous size—they can weigh as much as 300 kg (660 lbs) and can grow to be 1.3 m (4 ft) long—they live, or lived (some species are recently extinct), in the Seychelles, the Mascarenes and the Galapagos.

A turbocharger, or turbo (colloquialism)

from the Greek "τύρβη" (mixing/spinning) is a forced induction device used to allow more power to be produced for an engine of a given size. A turbocharged engine can be more powerful and efficient than a naturally aspirated engine because the turbine forces more intake air, proportionately more fuel, into the combustion chamber than if atmospheric pressure alone is used.

Turbochargers were originally known as a turbosuperchargers when all forced induction devices were classified as superchargers, nowadays the term "supercharger" is usually applied to only mechanically-driven forced induction devices. The key difference between a turbocharger and a conventional supercharger is that the latter is mechanically driven from the engine, often from a belt connected to the crankshaft, whereas a turbocharger is driven by the engine's exhaust gas turbine. Compared to a mechanically-driven supercharger, turbochargers tend to be more efficient but less responsive. Twincharger refers to an engine which has both a supercharger and a turbocharger.

Turbos are commonly used on truck, car, train and construction equipment engines. Turbos are popularly used with Otto cycle and Diesel cycle internal combustion engines. They have also been found useful in automotive fuel cells.
Turbochargers were originally known as a turbosuperchargers when all forced induction devices were classified as superchargers, nowadays the term "supercharger" is usually applied to only mechanically-driven forced induction devices. The key difference between a turbocharger and a conventional supercharger is that the latter is mechanically driven from the engine, often from a belt connected to the crankshaft, whereas a turbocharger is driven by the engine's exhaust gas turbine. Compared to a mechanically-driven supercharger, turbochargers tend to be more efficient but less responsive. Twincharger refers to an engine which has both a supercharger and a turbocharger.
Turbos are commonly used on truck, car, train and construction equipment engines. Turbos are popularly used with Otto cycle and Diesel cycle internal combustion engines. They have also been found useful in automotive fuel cells.

Turbochargers were originally known as a turbosuperchargers when all forced induction devices were classified as superchargers, nowadays the term "supercharger" is usually applied to only mechanically-driven forced induction devices. The key difference between a turbocharger and a conventional supercharger is that the latter is mechanically driven from the engine, often from a belt connected to the crankshaft, whereas a turbocharger is driven by the engine's exhaust gas turbine. Compared to a mechanically-driven supercharger, turbochargers tend to be more efficient but less responsive. Twincharger refers to an engine which has both a supercharger and a turbocharger.
Turbos are commonly used on truck, car, train and construction equipment engines. Turbos are popularly used with Otto cycle and Diesel cycle internal combustion engines. They have also been found useful in automotive fuel cells.

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