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Secured e-commerce with digital signature
Electronic transactions can be modified or deleted. But use of digital signature secures electronic transactions by bringing in authentication, confidentiality, integrity and legal non-repudiation.


Dinosaur ancestor's vision nocturnal
CALL IT `Triassic Park': with statistics, instead of amber-preserved DNA, researchers at the Howard Hughes Medical Institute at The Rockefeller University and Yale University recreated in the test tube a functional pigment that would have ...
How geckos stick
GECKOS, NATURE'S supreme climbers, can race up a polished glass at a metre per second and support their body weight from a wall with a single toe. A team of biologists and engineers has cracked the molecular secrets of the gecko's unsurpassed ...
Neural network based vehicle emission prediction
EMISSION DRIVING cycle tests for passenger vehicles, all over the globe, are statutory transient tests conducted on expensive chassis dynamometers using the internationally preferred `constant volume sampling' (CVS) method. The tests simulate the ...
Medicine delivery using light beam
MEDICAL RESEARCHERS would like to use nano-scale tubes to push very tiny amounts of drugs dissolved in water to exactly where they are needed in the human body. The roadblock to putting this theory into practical use has been the challenge of ...
Information Technology
IT TRENDS
When GPS meets GIS
Like the Internet, basic infrastructure of the GPS is free to use — and a handful of Indian players are enabling a host of applications including many that also harness another frontline tool: GIS. Anand Parthasarathy examines the sce nario at the cutting edge of two technologies.

Health & Medicine
Step closer to knowing cause of uterine fibroids
SCIENTISTS AT the National Institute of Child Health and Human Development (NICHD) and the University of South Florida, Tampa, have come one step closer to identifying the cause of uterine fibroids — a condition that affects up to 70 per ...
Bandage for damaged tissues
BY USING modified gelatin and polymers, John Kao, a University of Wisconsin-Madison pharmaceutical science and biomedical engineering professor, has developed a bandage that contains the molecular structure needed to help cells heal an injury. ...

Agriculture
FARMER'S NOTEBOOK
Persimmon, fruit that feigns tomato
PERSIMMON (DIOSPYROS kaki) belonging to the family Ebenaceae, is a choice fruit of the sub-tropics and temperate regions. Oriental persimmon is a native of China, and it spread to Korea and Japan several years ago. It is regarded ...
Root knot — pest of Coleus
KOORKKA (COLEUS parviflours) commonly known as `coleus tuber' thrives well in tropical and subtropical regions. A well drained fertile soil is suitable for its cultivation. The vines are planted in the main field between July and October ...
Vegetable use of bamboo
BAMBOO, A woody stemmed, evergreen perennials has jointed stems above and a rhizome below. . The edible vegetable portions of bamboo are the young emerging shoots that are harvested before significant fibre development. Shoots are progressively ...

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