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A new capillary electrophoresis mass spectrometry (CE-MS) technique is introduced for age estimation of silk textiles based on amino acid racemization rates. With an L to D conversion half-life of ~2,500 years for silk (B. mori) aspartic acid, the technique is capable of dating silk textiles ranging in age from several decades to a few-thousand-years-old. Analysis required only ~100 µg or less of silk fiber. Except for a 2-hour acid hydrolysis at 110 °C, no other sample preparation is required. The CE-MS analysis takes ~20 minutes, consumes only nanoliters of the amino acid mixture, and provides both amino acid composition profiles as well as D/L ratios for ~11 amino acids.
Ocean explorers on NOAA Ship Okeanos Explorer observed two species of marine life scientists believe have never before been seen together at a hydrothermal vent -- chemosynthetic shrimp and tubeworms. They also observed the first known live tubeworms ever seen at a hydrothermal vent in Atlantic waters.
For Immediate Release: September 13, 2011AMERICAN ACADEMY OF PEDIATRICS STATEMENT ON HPV VACCINEBy: O Marion Burton, MD, FAAP, president, American Academy of Pediatrics“The American Academy of Pediatrics would like to correct false statements made in the Republicanpresidential campaign that HPV vaccine is dangerous and can cause mental retardation. There is absolutely noscientific validity to this statement. Since the vaccine has been introduced, more than 35 million doses havebeen administered, and it has an excellent safety record.“The American Academy of Pediatrics, the Centers for Disease Control and Prevention, and the AmericanAcademy of Family Physicians all recommend that girls receive HPV vaccine around age 11 or 12. That’sbecause this is the age at which the vaccine produces the best immune response in the body, and because it’simportant to protect girls well before the onset of sexual activity. In the U.S., about 6 million people, includingteens, become infected with HPV each year, and 4,000 women die from cervical cancer. This is a life-savingvaccine that can protect girls from cervical cancer.
Experts believe that 4600 years ago, thirsty natives may have been enjoying a pie and pint at Jarlshof in Shetland.They say the layout of the stone settlement near Sumburgh Head suggests it may be the oldest pub ever found in Britain.And a dozen or so quernstones - for grinding barley - indicate it may have served as both a drinking den and a bakery.
http://www.dailyrecord.co.uk/news/editors-choice/2011/09/05/could-this-be-the-oldest-pub-in-scotland-86908-23397913/Oldest Pub in Scotland?QuoteExperts believe that 4600 years ago, thirsty natives may have been enjoying a pie and pint at Jarlshof in Shetland.They say the layout of the stone settlement near Sumburgh Head suggests it may be the oldest pub ever found in Britain.And a dozen or so quernstones - for grinding barley - indicate it may have served as both a drinking den and a bakery.
Does SGU pay for web server space by the thread or something?
Bits of filaments and feathers trapped in amber 79 million years ago offer an unusually wide-ranging view of what late dinosaurs and early birds were wearing.
Dinosaur-era feathers sealed in amberQuoteBits of filaments and feathers trapped in amber 79 million years ago offer an unusually wide-ranging view of what late dinosaurs and early birds were wearing.
Medical news Since I had to spend yesterday outside at a park, I dragged a pile of dusty old journals with me to do some reading. And I learned that:Patients who have migraines with nausea are more miserable than patients who have migraines without nausea (though neither group liked having them).Pain Medicine News, August 2011The best predictor for improvement in a chronic migraine patient is that they have fewer migraines.Neurology, February, 2011.Cancer patients with frequent pain have a lower quality of life than cancer patients with no pain.Pain Medicine News, April, 2010People on higher doses of narcotics are more likely to accidentally overdose than people on low-dose narcotics.Pain Medicine News, April, 2010
Where is the Apollo 10 Lunar capsule? It’s somewhere out there — orbiting the Sun — and there’s a new initiative to try and find it!
The Mission to Find the Missing Lunar ModuleQuoteWhere is the Apollo 10 Lunar capsule? It’s somewhere out there — orbiting the Sun — and there’s a new initiative to try and find it!
