Thursday, February 20, 2014

Nanotechnology Quiz

                

                                                         gkexamforever.blogspot.com

 Nanotechnology Quiz


1. Who is generally credited with the first serious scientific claim that manufacturing on the molecular or even the atomic scale was possible? The claim was made at California Technical Institute and was called, "There's Plenty of Room at the Bottom".

a) Richard P. Feynman
b) Ed Regis
c) K. Eric Drexler
d) Ralph Merkle

The correct answer is a) Richard P. Feynman


2. In 1986, Dr. K. Eric Drexler published a book for the layman that gave a wide overview of the potential applications of molecular nanotechnology in such areas as computing, medicine, space science, and the military. What was the name of this ground-breaking book?

a) Smaller is Better
b) Engines of Creation
c) A Crowded Blueprint
d) The Atomic Cookbook

The correct answer is b) Engines of Creation

3. A particular molecule of carbon made up of sixty carbon atoms has received some press as a structure that shows promise as a basicbuilding block in the area of molecular manufacturing. What is the whimsical nontechnical name for these molecules?


a) Fullerrods
b) Nanonodes
c) Buckyballs
d) Nanocubes

The correct answer is c) Buckyballs


4. What is the general name for the class of structures made of rolled up carbon lattices?

a) Nanorods
b) Nanotubes
c) Nanosheets
d) Fullerrods

The correct answer is b) Nanotubes

5. Nano, as a prefix, denotes what order of magnitude?

a) 10^-6
b) 10^-3
c) 10^-12
d) 10^-9

The correct answer is d) 10^-9


6. What is the term used in the field of nanotechnology to describe an as-yet theoretical device that "will be able to bond atoms together in virtually any stable pattern?"

a) Stacker
b) Replicator
c) Assembler
d) Constructor

The correct answer is c) Assembler

7. 
In discussions of the potential of molecular nanotechnology, the possibility has been posited that badly or maliciously designed self-assembling structures could get out of control, and destroy or disassemble all structures they encounter in their blind quest to replicate. What is the term for such a structure or group of structures?

a) Blue goo
b) Green Goo
c) Red goo
d) Gray goo

The correct answer is d) Gray goo


8. Scientists discussing the potential of molecular nanotechnology realized the possibility that self-assembling molecular constructs could conceivably get out of control and destroy just about anything. This led to the concept that other constructs could be designed to neutralize and/or destroy the rogue substances before they got out of hand. By what colorful term are these theoretical "antibody" substances collectively known?

a) Gray goo
b) Green goo
c) Red goo
d) Blue goo

The correct answer is d) Blue goo

9. 
Many challenges exist to be overcome before molecular manufacturing can truly reach maturity as an applied science. Which of the following is such a challenge when designing molecular machinery?

a) Thermal noise
b) Complexity of design
c) Quantum fluctuation
d) All of these

The correct answer is d) All of these

10. As of public record at the end of 2002, which country was making the greatest annual investment in molecular nanotechnology research?

a) Russia
b) United States
c) Japan
d) South Korea

The correct answer is c) Japan

Nanotechnology may prevent Cancer from spreading

                                                                                    gkexam forever.blogspot.com

Nanotechnology may prevent Cancer from spreading

              Nanotechnology may prevent cancer from spreading by using sticky nanoparticles. Researchers of Cornell University (US) have designed these sticky nanoparticles. These are made by attaching Trail protein and other proteins to the nanoparticles..

As per the results of earlier trial tests, Trail proteins has the ability to kil cancer cell .. These sticky nanoparticles are injected into blood stream which attaches themselves with the white blood cells Tests revealed that as soon as sticky nanoparticles came in contact of cancel tumor cells which had broken off the main tumour and were trying to spread, it kills them. It thus prevent tumour from spreading into other regions. The test results are significant in human blood and mice. 

The lead resercher Professor michael king suggested that sticky nanoparticles should be used before surgery or radiotherapy. This move would help in removing tumour cells from the main tumour
.

Saturday, February 15, 2014

National Women's Day of India

National Women's Day of India observed on 13 February 

          National Women's Day of India was observed on 13 February 2014. This day is observed on the date of birth of India’s first women governor Sarojini Naidu. Sarojini Naidu was born on 13 February 1879 and died on 2 March 1949. This was the 135th birth anniversary of Sarojini Naidu. 

Her birthday has been selected to observe as a National Woman Day in recognition of the works done by her for uplliftment and development of women in India. Her name and birth date was proposed to celebrate as the National Women’s Day in India by members of Bhartiya Mahila Sangh and Akhil Bhartiya Mahila Sammelan.

Sarojini Naidu

• Sarojini Naidu is also known as the Nightingale of India
• She was a child prodigy, a poet and an activist during the independence of India
• From 1947 to 1949, she served as the first woman to become the governor of an Indian state of United Provinces of Agra and Oudh
• In 1925, she served as second woman to become President of the Indian National Congress and the first Indian woman to do so
• Naidu joined the Indian national movement after the partition of Bengal in 1905
• In 1928, the British Government awarded her with the medal Naidu Kaiser-i-Hind for her work during the plague epidemic in India