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Selasa, 04 Januari 2011

Partial solar eclipse visible over Mideast, Europe

Partial solar eclipse visible over Mideast, Europe


A man watches a partial solar eclipse through a filter in GalyatetoReuters – A man watches a partial solar eclipse through a filter in Galyateto, some 100 km (62 miles) east of Budapest, …

GENEVA – Wintry skies darkened over Switzerland on Tuesday morning, but Romanians were treated to a pinkish ethereal light and Swedes to a beautiful sunrise, as a partial solar eclipse that began over the Mideast extended across much of Europe.

In Switzerland, the pall of clouds and light snow seemed like dusk with lights twinkling in cities — time in reverse just as people streamed off trains and buses to arrive at work. The solar occurrence was at its height over Geneva, Bern and other Swiss cities in the midmorning, then the grayness at the lower altitudes began to brighten a bit.

As much as two-thirds of the sun slipped from view behind the moon, something that hasn't occurred in Switzerland since August 1999. A more minor eclipse happened in August 2008.

Some Genevois asked via Twitter how they could see the eclipse as it snowed.

Federal health officials warned people, especially children, to wear special eye protection rather than use homemade gear to see the eclipse. The Swiss government itself tweeted: "An astronomical show, but watch the eyes!"

For some the weather lent that protection. "It was covered," Delio Macchi of the Neuchatel observatory said of the effect in Swiss skies.

Clear skies over southern Romania offered a chance to glimpse a pale pink, otherworldly glow that spread over Bucharest, the capital. People climbed atop snow-coated high-rise buildings to get a better view, or donned sunglasses and huddled outside subway stations in Revolution Square. Some watched it televised live; Romanians won't see their next eclipse until March 2015.

"This morning I saw a strange light," said Andrei Carlescu, a 21-year-old architecture student who was fascinated by the way the light dipped. "At first I didn't know what was happening. There were children about 9 or 10 who were wearing special glasses and looking at it."

The eclipse was first seen Tuesday over Jerusalem, where the sun appeared to have taken a large bit out of its upper right section.

A solar eclipse happens when the moon lines up between the sun and the Earth, casting a lunar shadow on the Earth's surface and obscuring the solar disk. During a partial solar eclipse, only part of the sun is blotted out.

Western Europe woke up to a sunrise eclipse. Astronomers expected the greatest eclipse over Sweden, where about 85 percent of the sun will be blocked.

"It's thanks to the position of the moon and so the shadow (of it) is very small," said Niclas Henricson, head of the Tycho Brahe observatory in southern Sweden.

Ten people had gathered at Henricson's observatory ready to check it out with their mobile telescopes should the cloudy weather disperse. He said Swedes only have such an opportunity about once every four to five years; their next full solar eclipse will be in 2126.

Rather than miss out, Christian Ander, a 31-year-old IT entrepreneur, went to a park to watch it, though he said that because it occurred so early in the morning, it wasn't as noticeable as it might have been if it had happened later in the day.

"It was beautiful," he said. "It was kind of like a sunrise."

Polish viewers were treated to live television coverage of the eclipse from the southern city of Krakow, where the shadow of the moon could be seen gradually blacking out the sun.

The golden croissant-like shape was visible in the dark sky in the morning. However, most of Poland was covered by clouds that blotted out the spectacular sight.

A sunset eclipse will be visible from central Russia, Kazakhstan, Mongolia and northwest China.

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AP writers Monika Scislowska in Warsaw, Louise Nordstrom and Malin Rising in Stockholm and Alison Mutler in Bucharest contributed to this report.

http://news.yahoo.com/s/ap/20110104/ap_on_re_eu/partial_solar_eclipse

Jumat, 23 April 2010

New Alzheimer vaccine to be tested in Europe

New Alzheimer vaccine to be tested in Europe


New Alzheimer vaccine to be tested in EuropeAFP/File – A woman is pictured holding the hand of a person suffering from Alzheimer's disease. A new vaccine …

VIENNA (AFP) – A new vaccine against Alzheimer's, developed by the Austrian biotechnology firm Affiris, will soon be tested in six European countries, the company announced Friday.

Some 420 patients will be recruited to take part in clinical trials inAustria, Croatia, Czech Republic, France, Germany and Slovakia, Affiris said in a statement.

The AD02 vaccine, developed with British drugmaker GlaxoSmithKline, was already tested for safety and tolerability over the past year.

The clinical trials will now test its efficacy, with results expected as early as 2012, the company said.

ADO2 is meant to prevent the building up of beta-amyloid plaques in the brain, which cause the degradation of nerve cells and are believed to play a crucial role in causing Alzheimer's disease.

The vaccine works by causing the body to attack these plaques by producing more antibodies, Till Jelitto, a spokesman for Affiris, told AFP.

More specifically, these antibodies are meant to attack only the part of the beta-amyloid protein that causes the plaques, he added.

This would reduce the risk for patients, as the protein as a whole already exists in healthy individuals.

The current vaccine is therapeutic, meaning it is aimed at treating patients already affected by the disease. But if results are positive, the technology could also be used to manufacture a prophylactic, or preventative, vaccine, Jelitto said.

In 2001, tests for a first vaccine against Alzheimer's disease were conducted in the United States and Europebut had to be cut short after serious side effects emerged.

Another vaccine was tested in Sweden in 2005.

Alzheimer's disease, also known as AD, is a neuro-degenerative disease that affects cognitive functions, further impacting patients' behaviour and social adaptation.

The disease, which still has no known cure, affects about six million people in Europe every year.

Affiris is also working on vaccines against Parkinson's and atherosclerosis.

http://news.yahoo.com/s/afp/20100423/hl_afp/austriahealthdrugsalzheimer;_ylt=AuFftK7GPjykfaR3sLln1iUPLBIF;_ylu=X3oDMTMyZGd0azM3BGFzc2V0A2FmcC8yMDEwMDQyMy9hdXN0cmlhaGVhbHRoZHJ1Z3NhbHpoZWltZXIEcG9zAzEyBHNlYwN5bl9hcnRpY2xlX3N1bW1hcnlfbGlzdARzbGsDZnVsbG5ic3BzdG9y