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Tag: "weighing" at biology news

In Iran, cheetahs collared for the first time

... tranquilized, and fitted with compact GPS collars weighing 350 grams- only 1% of the cheetahs' weight. It is the first time the species has been handled by a scientific team in Iran and represents a unique new phase of WCS's long-term involvement in the country. The new collars will furnish very precise inf...

Mysterious 'neural noise' actually primes brain for peak performance

...at taking various bits of probability information, weighing their relative worth, and coming to a good conclusion quickly," says Pouget. "But we've always been at a loss to explain how our brains are able to conduct such complex Bayesian computations so easily." Two years ago, while talking with a physics f...

Asia's odd-ball antelope gets collared

... Standing just under two feet at the shoulder and weighing about 50 pounds, the most striking feature of the saiga is its large nose, or proboscis, similar to a tapir. The function of this unusual nose is not clear, but it may serve to warm or filter air during Mongolia's frigid winters and notorious dust s...

Dinosaurs -- stones did not help with digestion

...ate over four orders of magnitude, from an ostrich weighing 89 kilograms to a sauropod weighing 50,000 kilograms. This may seem a bit daring. However, within birds the range of body weight and co...

US infant mortality rate fails to improve

...of all U.S. infant deaths in 2003. Also, infants weighing less than 1,000 grams or 2.2 pounds at birth also accounted for less than one percent (0.8 percent) of births and nearly half (48.7 percent) of all infant deaths in the U.S. in 2003. Multiple births had mortality rates more than five times that of ...

Dragonfly migration resembles that of birds, scientists say

...14 green darner dragonflies with radiotransmitters weighing only 300 milligrams -- about a third as much as apaper clip. Green darners are among the 25 to 50 species of dragonfliesthought to be migratory among about 5200 species worldwide. The team of researchers that made the discovery, led by PrincetonUniv...

Large dinosaurs were extremely hot in their day, UF study finds

...ncreased by about 5 degrees Fahrenheit for species weighing about 661 pounds as adults and nearly 36 degrees for those reaching about 27 tons. This dramatic difference in body temperature between the largest and smallest dinosaurs probably resulted in major differences in how these species lived, because we k...

Chewing up a key regulator of fat synthesis keeps mice lean despite a high-fat diet

...eir body weight--about 10 to 15 pounds for someone weighing 200 pounds. Defining how molecules regulating fat storage interact could lead to novel measures to curb obesity. Further evidence linking TRB3 to disease comes from recent findings from a team of Italian scientists who report that mutations in the h...

One-third of adults with diabetes still don't know they have it

...estational diabetes) or have given birth to a baby weighing more than 9 pounds have polycystic ovary syndrome, a metabolic disorder that affects the female reproductive system have acanthosis nigricans (dark, thickened skin around neck or armpits) have a history of disease of the blood vessels to the he...

Mosquito spray increases toxicity of pyrethroids in creek, study finds

...result of this study's findings, particularly when weighing the risks of mosquito-borne diseases. "Public health risk still trumps everything, and pyrethrin and PBO exposed to sunlight degrade easily into innocuous substances after a day or two," he said. However, based upon these study results, Weston said...

Alaska seal pup diet may hold key to decline of population

... body mass and body fat, Polasek explained. Seals weighing less than 26 kilos (about 12 pounds) showed little progress in gaining weight and even lost blubber, regardless of which diet they were on. On the other hand, the study's largest seal, which weighed 33kg when she began in 2004, has shown good growth ...

Ancient ants arose 140-168 million years ago

...erms, mass spectrometry is essentially a scale for weighing molecules. A laser turns a sample into ionized particles, which are then accelerated in a vacuum toward a detector. The time lapsed prior to registering on the detector helps researchers determine the mass--or weight--of the particles. By targeting c...

Researchers use mass spectrometry to detect norovirus particles

...erms, mass spectrometry is essentially a scale for weighing molecules. A laser turns a sample into ionized particles, which are then accelerated in a vacuum toward a detector. The time lapsed prior to registering on the detector helps researchers determine the mass--or weight--of the particles. By targeting c...

Plankton can run, but can't hide from basking sharks

...nce by at least 10-fold. Up to 10 metres long and weighing up to 7 tons - about the size of double-decker bus - the basking shark is the world's second largest fish and feeds by filtering plankton from sea water through its enormous mouth. It is able to filter up to 2,000 tons of water per hour - the equival...

Team Invents Device For Weighing Individual Molecules

...logy have created the first nanodevices capable of weighing individual biological molecules. This technology may lead to new forms of molecular identification that are cheaper and faster than existing methods, as well as revolutionary new instruments for proteomics. According to Michael Roukes, professor of ...

New design : complete

... this loss. Calculating fluid loss is as simple as weighing yourself before and after exercise and comparing that number to the amount of fluid you consumed throughout. "All serious distance athletes should find out what their rate of fluid loss is and individualize their fluid intake prior to a distance ev...

Bush, Cheney and Rumsfeld are now species of slime-mold beetles -- but strictly in homage

... this loss. Calculating fluid loss is as simple as weighing yourself before and after exercise and comparing that number to the amount of fluid you consumed throughout. "All serious distance athletes should find out what their rate of fluid loss is and individualize their fluid intake prior to a distance ev...

Too much water may be as dangerous as too little during long-distance athletic events

... this loss. Calculating fluid loss is as simple as weighing yourself before and after exercise and comparing that number to the amount of fluid you consumed throughout. "All serious distance athletes should find out what their rate of fluid loss is and individualize their fluid intake prior to a distance ev...

First frozen egg baby born in Canada

...ontreal confirmed the birth of a healthy baby boy, weighing 3740grams on April 29. "We are the first in-vitro fertilization (IVF) Centre in Canada to achieve this success," says Dr. Tan. "This is fantastic news for both the family and for fertility health research and we would like to congratulate the parents...

Experiments provide proof of how traveling in groups protects insects

...y is correct. By gluing radio transmitters -- each weighing less than half a gram -- to the backs of Mormon crickets in northeastern Utah and northwestern Colorado, Drs. Gregory A. Sword, Patrick D. Lorch and Darryl T. Gwynne showed experimentally that band formation indeed boosted insect survival. Sword is ...

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