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Mary had a lot of lambs: Researchers identify way to accelerate sheep breeding

Mary had a little lamb, but only once a year. However, Cornell Sheep Program researchers have discovered an unusual form of a gene that prompts ewes to breed out of season as well as conceive at younger ages and more frequently. They conducted a simple genetic test to identify the presence of t...

Psychiatric disorders are common in adults who have had anorexia

The study was initiated in 1985. A total of 51 teenagers with anorexia nervosa were studied, together with an equally large control group of healthy persons. The groups have been investigated and compared several times as the years have passed. "This study is unique in an international perspecti...

Ancestral genome of present-day African great apes & humans had burst of DNA sequence duplication

The genome of the evolutionary ancestor of humans and present-day apes underwent a burst of activity in duplicating segments of DNA, according to a study to be published in Nature Feb 12, the 200th anniversary of Charles Darwin's birthday. "The new study shows big differences in the genomes ...

Early humans had 'jaws of steel'

TEMPE, Ariz. Your mother always told you not to use your teeth as tools to open something hard, and she was right. Human skulls have small faces and teeth and are not well-equipped to bite down forcefully on hard objects. Not so of our earliest ancestors, say scientists. New research published in...

New meat-eating dinosaur from Argentina had bird-like breathing system

MENDOZA, ArgentinaThe remains of a new 10-meter-long predatory dinosaur discovered along the banks of Argentina's Rio Colorado is helping to unravel how birds evolved their unusual breathing system. Paleontologists led by the University of Chicago's Paul Sereno, a National Geographic Explorer-i...

Meat-eating dinosaur from Argentina had bird-like breathing system

ANN ARBOR, Mich.--The remains of a 30-foot-long predatory dinosaur discovered along the banks of Argentina's Rio Colorado is helping to unravel how birds evolved their unusual breathing system. University of Michigan paleontologist Jeffrey Wilson was part of the team that made the discovery, to ...

Primordial fish had rudimentary fingers

Tetrapods, the first four-legged land animals, are regarded as the first organisms that had fingers and toes. Now researchers at Uppsala University can show that this is wrong. Using medical x-rays, they found rudiments of fingers in the fins in fossil Panderichthys, the transitional animal, whi...

Liter of fuel would last UK 1 year if cars had kept pace with computers

One litre of fuel would serve the UK for a year and oil reserves would last the expected lifetime of the solar system - if efficiency in the car industry had improved at the same rate as in the computer world - a leading computer scientist will tell an audience in Manchester on Friday 20 June 2008...

Freshwater herring had salty origin

East Africas Lake Tanganyika has a highly diverse fauna which closely resembles marine animals. A researcher at the University of Zurich has traced the origins of the freshwater herring of the Lake to a marine invasion which occurred in West Africa 25 to 50 million years ago, coincident with a maj...

Unusual fish-eating dinosaur had crocodile-like skull

An unusual dinosaur has been shown to have a skull that functioned like a fish-eating crocodile, despite looking like a dinosaur. It also possessed two huge hand claws, perhaps used as grappling hooks to lift fish from the water. Dr Emily Rayfield at the University of Bristol, UK, used computer...

Old McDonald had a phytochemical

UVALDE Forget the moo-moo here and quack-quack there. Farmers may find phytochemicals to be the barnyard bonanza. And water may be the drop in the bucket that cashes in on the tug-o-war between urban and rural interests, according to research by the Texas Agricultural Experiment Station. Th...

Restricting hospital-based services during SARS outbreak had modest impact

Restrictions on the non-urgent use of hospital-based services that were imposed when a provincial health emergency was declared during the 2003 SARS (Severe Acute Respiratory Syndrome) outbreak in Toronto, Ontario, resulted in only modest reductions in overall admissions. In this study, Dr. Michae...

Despite their heft, many dinosaurs had surprisingly tiny genomes

They might be giants, but many dinosaurs apparently had genomes no larger than that of a modern hummingbird. So say scientists who've linked bone cell and genome size among living species and then used that new understanding to gauge the genome sizes of 31 species of extinct dinosaurs and birds, ...

Like salty food? Chances are you had low blood sodium when you were born

A new study concludes that low birthweight babies born with low sodium (salt) in their blood serum will likely consume large quantities of dietary sodium later in life. In the study, researchers also found that newborns with the most severe cases of low sodium blood serum consumed ~1700 mg more so...

Fossil find: 'Godzilla' crocodile had head of a dinosaur, fins like a fish

Editor : See pictures on the National Geographic website Researchers have discovered evidence of an ancient sea creature that would have made Tyrannosaurus rex, think twice before stepping into the ocean. At the southern tip of South America , they found fossils of an entirely new species ...

The earliest animals had human-like genes

Species evolve at very different rates, and the evolutionary line that produced humans seems to be among the slowest. The result, according to a new study by scientists at the European Molecular Biology Laboratory (EMBL), is that our species has retained characteristics of a very ancient ancestor t...

Study: Predatory dinosaurs had bird-like pulmonary system

What could the fierce dinosaur T. rex and a modern songbird such as the sparrow possibly have in common? Their pulmonary systems may have been more similar than scientists previously thought, according to new research from Ohio University and Harvard University. Though some scientists have propos...

AGU journal highlights -- Aug. 6, 2009

...heric ozone depletion, which most previous studies had not included. They compare coupled carbon-climate ... not attributable to earthquakes. Previous studies had found that this hum is excited by infragravity wav...erate lightning in this manner, but the phenomenon had not been directly observed. To observe evidence of...

New cancer drug delivery system is effective and reversible

...ls to the new drug-delivery system, 59.5 percent of the breast cancer cells had died, while less than 12 percent of breast cancer cells treated with cisplatin alone had died. "By labeling a liposome that contains cisplatin with a cancer cell...

Moving to the US increases cancer risk for Hispanics

...cer once they moved to the United States; Mexicans had the lowest rates of cancer overall and Puerto Ricans had the highest rates of cancer. Cubans' risk of cance...rs relatively quickly. Furthermore, Cuban males had higher incidence of tobacco-related cancers; Puert...

Women often opt to surgically remove their breasts, ovaries to reduce cancer risk

...etime risk of breast cancer without mutations also had a documented increase in risk-reduction surgery. Women who had a biopsy after undergoing risk evaluation were twi...ent bilateral risk-reducing mastectomy; 45 percent had bilateral risk-reducing salpingo-oophorectomy (sur...

Venomous sea snakes play heads or tails with their predators

...ng the behaviour of wild Sea Kraits in Solomon Islands during the Danish Galathea 3 Expedition. The research confirmed that all snakes of this species had a distinctive colouration pattern, with a bright yellow horseshoe marking on the tip of the head and the tail. The yellow was deeper than the colours ...

Abnormal brain circuits may prevent movement disorder

...udy; 12 with symptoms and eight without. They also had a number of volunteers who agreed to brain scans who had no disease and no mutations in the gene for dyston...suspected that these otherwise healthy individuals had such difficulties since doctors only saw those who...

Scary ancient spiders revealed in 3-D models, thanks to new imaging technique

...ntists to see some features of the creature, which had four pairs of legs and looked similar to a spider....ientists also discovered that Cryptomartus hindi had ball-like growths at the base of its limbs, called...artus hindi 's mouth appendages, called pedipalps, had tiny 'tarsal' claws attached at the end to help th...

Lead-based consumer paint remains a global public health threat

... per million (ppm) for lead in paint. In addition, 69 percent of the brands had at least one sample exceeding 10,000 ppm. With the majority of American con...earchers determined that 73 percent of the paint companies' products tested had lead concentrations exceeding current U.S. standards. In September 2006...

Pitt researchers find promising candidate protein for cancer prevention vaccines

...said. "While we were studying it, we noted that many healthy people already had an immune response, or antibodies, against the protein, even though they'd never had cancer." According to the researchers, the immune response most likely d...

Brain difference in psychopaths identified

...n the specific brain regions implicated in psychopathy. Earlier studies had suggested that dysfunction of specific brain regions might underpin psychop...dala and OFC, which is called the uncinate fasciculus (UF). However, nobody had ever studied the UF in psychopaths. The team from King's used an imaging me...

Sustainable agriculture at the ESA Annual Meeting

...etween annual wheat fields and perennial grass fields in Kansas. The fields had each been harvested annually for the past 75 years. In each test, the res... infiltrated about a foot deeper into the ground. The perennial fields also had higher soil microbe biodiversity and higher levels of dissolved carbon and ...

Holding breath for several minutes elevates marker for brain damage

... Divers who held their breath for several minutes had elevated levels of a protein that can signal brain...part in this study, along with six individuals who had limited experience with breath-hold diving. The ni...ed to people who suffered brain injury. The divers had a quick return to normal, while S100B levels peak ...

Restoring a natural root signal helps to fight a major corn pest

...than Gershenzon at the Max Planck Institute for Chemical Ecology in Jena he had already contributed to a key discovery four years ago by Sergio Rasmann in ...reeding, most North American maize varieties no longer emitted EβC and had lost the ability to attract protective nematodes. Therefore the researc...

K-State researchers say after-school programs should promote activity, healthy nutrition

...s during indoor free play and organized outdoor activities; however, moderate activity levels for both genders were similar. This shows that the girls had lower participation in vigorous-intensity physical activity. Dzewaltowski said after-school programs can better cater to the interests of genders a...

La Jolla Institute discovers novel tumor suppressor

... and leukemia are cancers of the blood. "PLC-beta 3 is an enzyme, but the function we found was a completely different function that no one knew it had -- as a tumor suppressor," said the La Jolla Institute's Toshiaki Kawakami, M.D., Ph.D., who led the research team. The study, conducted in animal ...

DNA computation gets logical at the Weizmann Institute of Science

... assembled by a robotic system and searched for a fit in a hierarchical process. The answer was encoded in a flash of green light: Some of the strands had a biological version of a flashlight signal they were equipped with a naturally glowing fluorescent molecule bound to a second protein which keeps th...

Urban water ecology at the ESA annual meeting

...in developed lakes, a pattern that was also apparent at the regional and national scale. Francis' research also showed that trout in developed lakes had a 50 percent lower daily intake of energy. Lower energy intake can slow growth and compromise fish reproduction, she says, which will ultimately lead ...

Stem cell 'daughters' lead to breast cancer

...t in the way scientists think breast cancer develops. Dr Visvader said it had been thought in recent years that breast stem cells gave rise to BRCA1 tumo...herapies for the next generation of women." Dr Visvader said the research had only been possible through the generous donation of breast tissue by women ...

Aware, Inc. Reports Second Quarter 2009 Financial Results

..., excluding the effect of stock-based compensation, was $1.2 million, or $0.06 per diluted share. For the six months ended June 30, 2009, the company had a non-GAAP net loss, excluding the effect of stock-based compensation, of $2.9 million, or $0.13 per share. Michael Tzannes, Aware's chief exec...

Race/ethnicity, family income and education associated with sugar consumption

...ith the next lowest intake according to racial/ethnic categories. Black men had the highest intake among men, although white and American Indian/Alaskan Na...ve men were also high. Black women and American Indian/Alaskan Native women had the highest intake among women. Writing in the article, Frances E. Thomp...

New hope for fisheries

...y examined. The paper, which appears in the July 31 issue of the journal Science , provides new hope for rebuilding troubled fisheries. The study had two goals: to examine current trends in fish abundance and exploitation rates (the proportion of fish taken out of the sea) and to identify which tool...

Drug-proof zebrafish reveal secrets of addiction

...tamine is experienced as pleasurable, amphetamine response was determined by measuring whether fish chose to move to a half of the tank where the drug had been given out. By comparing these drug-proof nad mutants to fish with a normal response, Webb and her colleagues discovered a set of 139 genes tha...

August 2009 Geology and GSA Today media highlights

...years ago, and Kender et al. now suggest that they had a significant effect on the climate at this time. ...o-called Lau Event. This globally recognized event had significant effects on marine life, oceanic chemis...deposited. Eriksson et al. show that the Lau Event had a profound impact on the early evolutionary histor...
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