Iran daily - science - 08/0.

http://www.iran-daily.com/1387/3205/html/science.htm 2008/08/26
Royan Institute to Hold Congresses
Childhood Cancer
Kids With Pets Snore As Adults
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Improving Memory
In Alzheimer’s
Iran’s GIS Satellite by 2010
Gold-Plated Church Windows Purify Air
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Daily Aspirin in Middle-Age Call
National
For Mosquitoes,
DEET Just Plain Stinks
Domestic Economy
Royan Institute to Hold Congresses
Art & Culture
This in turn could help in the developmentof better mosquito repellents, according to the team at the University of California, Davis, Reuters reported.
They managed to record signals fromindividual neurons in the antennae, whichmosquitoes use to smell, and determinedthat they were not blocked but stimulatedin a way that suggested the odor was A researcher at the Royan Institute.
simply unpleasant.
“We found that mosquitoes can smell who led the work. “DEET doesn’t mask the senses. Mosquitoes don’t like it because it active ingredient in insect repellents.
New Antibiotic May Block
bugs like salmonella, US researchers said releasing toxins that make people sick.
“The sensors in bacteria are waiting for the right signal to initiate the expression of virulent genes,“ Dr. Vanessa Sperandio of Instead of looking for new ways to kill the bacteria, like most antibiotics, Sperandio Relations Office of the stemcell congress, IRNA reported.
Most research papers have been forwarded from the USA (28), Italy “Using LED209, we blocked those sensing(18), China (16), Germany (13), India (12) and Iran (11).
The international congress aims to provide all professionals involved in bacteria to not recognize that they werereproductive biomedicine and stem cell research the opportunity to within the host,“ said Sperandio, whoseexchange views regarding their projects and researches concerning study appears in the journal Science.
international developments.
Millions of potentially harmful bacteria are Speakers will also present the latest scientific findings through present in the body, but without the propercomprehensive programs covering a wide range of lectures in the fields chemical signals, such as from a hormone,of reproduction and stem cells.
they simply pass through the digestivetract.
In prior studies, researchers at UT http://www.iran-daily.com/1387/3205/html/science.htm Southwestern identified special receptorson a diarrhea-causing strain of Escherichia Kids With Pets Snore As Adults
coli that receive signals from microbes and Children who grow up in the company of cats, dogs or other furry hormones in the intestine that activate the
friends are more likely to become snoring adults, according to a new bacteria.
study.
Snoring is no laughing matter. Besides sleep deprivation--for the Preeclampsia Raises Kidney Failure
snorer, and especially for anyone within earshot--snoring is linked to Risk
more serious consequences, AFP reported.
It increases the risk of cardiovascular disease, such as heart attacks or produces high blood a stroke, and can even result in premature death.
Earlier research has shown that a tendency to snore can be problems in 5 To find out why, researchers led by Karl Franklin of University Hospital pregnancies, can in Umea, Sweden, asked more than 15,500 randomly selected people significantly increase in Nordic countries about their early childhood and their snoring habits.
Just over 18 percent of the respondents fit the profile of habitual failure decades later, Norwegian snorers, defined as “loud and disturbing snoring at least three nights in The childhood ’risk’ factors most associated with this group were exposure to animals, early respiratory or ear infections, and--oddly that doctors have suspected for years.
Newborns in contact with dogs, they found, were among the most likely increasing the risk of heart disease, to become nocturnal noisemakers when they grew up.
The study was published in the Britain-based BioMed Central’s journal used the same Norwegian database ofmore than 500,000 women, found thatpreeclampsia raised the likelihood that a Improving Memory
woman would undergo a kidney biopsylater in life.
In Alzheimer’s
the annual risk of developing kidney failure pregnancy, the researchers found, the risk of ESRD increased dramatically. It was 4.7 times higher with the first pregnancy, 6.4 times higher if it developed during each of two pregnancies, and 15.5 greater if there Smart Plankton to ’See’ Underwater
Dr. Alberto Priori from the University of Milan told Reuters Health, researchers are working on “smart“suggesting that chronic daily application might induce even greater plankton“, which will carry sensors andimprovement.“ “Our studies encourage broader research programs using different Released in groups, they could driftstimulation protocols and longer clinical follow-up to clarify the impact through the ocean collecting data.
this therapy might have on patients’ daily functional activities,“ Priori This is a watery take on an idea dubbedadded.
“smart dust“, already used to monitor Priori and colleagues investigated whether electrical stimulation applied environmental conditions on land andover an area at the side of the brain called the temporoparietal cortex tipped to transform extra-planetarycould improve recognition memory in 10 patients with Alzheimer’s exploration.
disease.
The treatment significantly improved word recognition memory cheap sensors that communicateaccuracy, whereas sham treatment had no impact on memory.
The results were similar after correcting memory performance for conditions over wide areas.
guessing, the report indicates.
Davide Brizzolara says that using a similarapproach in the oceans will providegreater coverage than static underwatersensors do, and would be cheaper than http://www.iran-daily.com/1387/3205/html/science.htm Iran’s GIS Satellite by 2010
using autonomous underwater vehicles.
Head of Iran’s Aerospace Organization announced that Iranian He is developing the smart plankton withresearchers would launch a Geographic Information System satellite by colleagues at SmartLab at the University of2010.
Reza Taqipour also told Mehr News Agency that the satellite’sproduction has lasted between 18 to 24 months.
Noting that the satellite has meteorological applications, Taqipour saidit can help in the identification of forests, natural resources, waters andrivers, as well as farming.
“The satellite will be placed in lower orbits. It will be launched by 2010,“he added.
President Mahmoud Ahmadinejad recently elaborated on Iran’sprogress in the field of aerospace, including the launch of its firsttelecom and GIS satellite in the near future.
Gold-Plated Church Windows Purify Air
Medieval stained-glass windows colored in gold nanoparticles help
purify air when lit by the sun, a new study finds.
“For centuries, people appreciated only the beautiful works of art and
long life of colors, but little did they realize that these works of art are
also, in modern language, photocatalytic air purifier with nanostructured
gold catalyst,“ said Zhu Huai Yong, a material scientist at the
Queensland University of Technology, LiveScience reported.
When energized by the sun, tiny gold particles can destroy certain
airborne pollutants. These pollutants, called volatile organic
compounds, create the ’new’ smell often detected in new furniture,
carpets and paint in good condition. Even in small amounts, these
compounds, like methanol and carbon monoxide, are not good for your
health.
“An electromagnetic field generated by sunlight couples with the gold
electrons’ oscillations to create a resonance,“ said Zhu.
The magnetic field of the gold nanoparticles can expand up to hundred
times, breaking apart the pollutant molecules.
Zhu said the byproduct of the reaction is carbon dioxide, which is
comparatively safe, particularly in the small amounts that would be
created through this process.
The high price of gold notwithstanding, using gold nanoparticles to
drive these chemical reactions is more energy-efficient than
conventional air-purifying processes, the researcher says, and it might
be possible to commercialize it.
Daily Aspirin in Middle-Age Call
Men and women over a certain age should take aspirin daily to prevent
heart attacks, experts say in Heart journal.
Nottingham and Sheffield universities’ analyses of almost 12,000
patients found men from the age of 48 and women from 57 would
benefit from the drug, BBC reported.
Heart attacks occur when a blood vessel is blocked by a clot, but
aspirin makes it harder for blood clots to form.
The British Heart Foundation said more research was needed before
“blanket prescribing“ could be recommended.
The analyses of almost 12,000 patients aged between 30 and 75
showed that by the age of 47 in men and 58 in women, the 10-year
coronary heart disease risk is 10 percent--a risk worth treating, the
researchers said.
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