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NEWSNOTES
SCIENCE NEWS
Early Worries
Squint.
Behavioural problems. Diseases of the middle ear. Disabilities in a child.
All of these have been linked to childhood meningitis, according to a
study in British Medical Journal. Children who get meningitis in their
first year of life have a ten fold greater risk of disability by the age
of five, concluded the study, based on cases of over 1,700 children. A
thorough vision and hearing check on the child after an attack of bacterial
meningitis is one way of detecting problems early. Simple educational
interventions and compassionate treatment can go a long way in helping
those children for whom it is already too late.
HEALTH
RECURRENT STROKE
Twice As Deadly
Recurrent
stroke is made doubly deadly. Recent studies show that a quarter of all
who survive the first attack have another within five years; 3 per cent
have the second attack within 30 days.
That's the bad news. The good news is that doctors
now have weapons for a counter-attack. An extensive study backed by three
organisations, including the who, and spanning 10 countries and more than
6,000 patients reveals that merely taking drugs to control hypertension
can reduce the chances of a recurrent stroke by half. New techniques to
detect the probability of stroke also help.
A stroke recurs because more than one clot is
likely to be formed. Clots originate from "plaques", masses
of substances that cling to and thicken the walls of blood vessels. High
blood pressure is a cause of thickened arteries. That is why drugs that
control hypertension help.
There may be some warning signs-sudden numbness
of face, arm or leg, difficulty speaking, blurred vision, dizziness or
severe headache without reason. The only way to detect a possible clot
so far has been by a technique called Carotid Doppler, which studies vessels
in the neck. But now there's a new technique to scan for clots in vessels
of the brain itself called Transcranial Doppler. Effective and relatively
cheap at Rs 1,800, it could potentially save lives by detecting the clot
before it can cause much damage.
Who's most at risk? Those with a family history
of stroke. Those who smoke, drink too much alcohol or abuse drugs. Hypertensives,
diabetics and heart patients. But now there's hope for them too.
--Supriya Bezbaruah
Little
Big Thing: And now, radio. A new software called Replay Radio makes
MP3 files of Internet radio programmes for playback on pocket PCs. Like
all things Microsoft, a new version is on the way for this too: the Pocket
PC 2002. The hardware will remain largely unchanged; it's a software upgrade.
The device already supports wireless Internet, e-mail, MS Word and Excel,
and is getting smarter at recognising handwriting. It is handier than
the usual mobile phone. Typical dimensions: 5.11 inches high, 3.28 wide
and 0.62 inches deep for Compaq's iPAQ. Price: Rs 35,000.
Teething
Troubles: In the first project of its kind in the country, the Agra
branch of the Indian Dental Association examined the teeth of over 1.3
lakh children aged 5-12 in rural Uttar Pradesh as part of the Rural Oral
Health Awareness Programme. Their shocking preliminary finding: 80 per
cent suffer dental caries (rotting teeth). The reason, says Agra IDA Secretary
Hariom Sharma, is ignorance-they use coal, ash and mud to "clean"
their teeth. Using toothpaste, or failing that, neem or bamun (acacia)
is the preferred solution.
COMPUTERS
I Spy
Someone
might be reading your mail. Carnivore, recently renamed DCS1000, was developed
by the FBI in the US two years ago to wiretap communications that go through
Internet service providers. Information is sent over the Internet in "packets".
The system, installed at ISPs, captures packets of Internet traffic as
they travel through networks. It can monitor millions of e-mail messages
each day.
Worm
Attack: If you get a mail with an attachment saying readme.exe, don't-it's
a worm. Dubbed Nimda, this very malicious worm attacks Microsoft Web Server.
Safe
Mail: There are resources available that make hunting difficult even
for the Carnivore. MagnusNet is a system that lets users route their requests
through a series of web servers. So a user can visit Hotmail, for example,
and send messages that cannot be traced back to him. Then there's steganography,
the art of hiding information in innocuous-looking images. Not to forget
plain encryption. Hushmail, a free web-based email service, might beat
the FBI.
--Compiled by Supriya Bezbaruah
and Samrat Choudhury
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