February 2014



Bee Science: Huge swaths of the agricultural industry depend on the humble honeybee. According to the USDA, "about one mouthful in three in our diet directly or indirectly benefits from honey bee pollination." Biologists at Stanford are now looking into how the tiny ecosystems in the nectar of flowers affect the bees' dining preferences. Their work suggests bees may be picky pollinators, and their fussiness could confound complications from colony collapse disorder. Read more ....

Mono Lake Buried deep in the mud along the banks of a remote salt lake near Yosemite National Park are colonies of bacteria with an unusual property: they breathe a toxic metal to survive. Researchers from the University of Georgia discovered the bacteria on a recent field expedition to Mono Lake in California, and their experiments with this unusual organism show that it may one day become a useful tool for industry and environmental protection. Read more ....

Cross-section of hippocampus Suppose you heard the sound of skidding tires, followed by a car crash. The next time you heard such a skid, you might cringe in fear, expecting a crash to follow - suggesting that somehow, your brain had linked those two memories so that a fairly innocuous sound provokes dread. Read more .....

NASA's Opportunity rover New findings from rock samples collected and examined by NASA's Mars Exploration Rover Opportunity have confirmed an ancient wet environment that was milder and older than the acidic and oxidizing conditions told by rocks the rover examined previously. Read more ....

Kornberg In a finding that directly contradicts the standard biological model of animal cell communication, UCSF scientists have discovered that typical cells in animals have the ability to transmit and receive biological signals by making physical contact with each other, even at long distance. Read more ....




Cat and dog story

Dog

My friend Anil is an animal lover. He decided to start a shelter for cats and dogs. After people came to know that Anil had started the shelter, they brought stray cats and dogs to him. By the end of one month, Anil's shelter housed 55 cats and dogs. The number of dogs was more than the cats.

Anil's resources were limited, so he stopped taking further animals. He first wanted to find good homes for the cats and dogs under his care before he took more animals. Over the next 15 days, Anil managed to find homes for exactly one-fifth of the cats and one-fourth of the dogs.

From this data I was trying to find out how many cats and how many dogs Anil had initially, and how many of them found new homes. Can you help me?






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  • Union Public Service Commission - www.upsc.gov.in
  • IIT-Kharagpur - www.iitkgp.ac.in
  • Indian Statistical Institute - www.isical.ac.in
  • Indian Institute of Technology Madras - www.iitm.ac.in
  • Indian Institute of Management, Ahmedabad - www.iimahd.ernet.in
  • Indian Institute of Mass Commission - www.iimc.nic.in
  • IIT Bombay - www.iitb.ac.in
  • Indian School of Mines, Dhanbad - www.ismdhanbad.ac.in
  • Birla Institute of Technology, Ranchi - www.bitmesra.ac.in
  • Central Institute of Fisheries Nautical and Engineering Training - www.cifnet.nic.in
  • Indian Institute of Information Technology, Allahabad (Deemed University) - www.iiita.ac.in
  • Central Marine Fisheries Research Institute, Kochi - www.cmfri.com
  • Tata Institute of Social Sciences, Mumbai - www.tiss.edu

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