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Tag: "cast" at biology news

Study investigates 'divorce' among Galapagos seabirds

...many other animals, she said. A male Nazca booby cast off by a current mate may be selected by a different female the next year, after he has had a chance to regain his condition....

Biologically inspired sensors can augment sonar, vision system in submarines

...sional structures, individual components are first cast in place on sacrificial layers using photolithography and planar deposition. A small amount of magnetic material is electroplated onto each of the parts, which are then freed from the substrate by an etchant. When a magnetic field is applied, the ind...

'The eyes have it' -- Autism research yields surprising results

...ic children and adults. But the latest findings cast doubt on this hypothesis. A study at The University of Nottingham found that autistic children were able to interpret mental states when looking at animated facial expressions. The findings also suggest that the use of moving images, rather than conv...

Living laboratory found on shoreline statues

...uencing colonisation. The installation of the cast iron figures - each a replica of the artist's own body, and identical in size, shape and material - offer a perfectly replicated study environment to test for the effects of different levels of exposure to the environment, currents and sea level on m...

Nice guys do finish first in lizards' evolutionary race

...has focused on why the blue throats are willing to cast aside their own opportunities to procreate for the benefit of a friend. "Why not abandon them and become loners ?why not go it alone?" McAdam said. "The blue throats can set up new territories and be successful. That's the evolutionary puzzle that w...

Gut microbes' partnership helps body extract energy from food, store it as fat

...lves and us. They also have to learn how much this cast of microbial characters varies in different human individuals. "We are superorganisms containing a mixture of not just human cells but also bacterial cells and cells of another microscopic domain of life known as Archaea," says senior author Jeffrey...

Polynesia explorers created worldwide web of scientific knowledge

...sohn wrote. In truth, their enterprises engaged a cast of thousands, all of whom interacted in the "multifaceted network": patrons, collaborators, philosophers back home, missionaries abroad and travel writers such as Charles Darwin and Herman Melville. During this era, scientific travelers were young, ...

How satellite tracking revealed the migratory mysteries of endangered Atlantic loggerhead turtles

...esearch* shows that in 2000 1.4 billion hooks were cast into the world's oceans through industrial fishing. It's thought that globally more than 200,000 loggerhead turtles were incidentally caught by fisherman scouring the waters for other species such as tuna and swordfish. Of these, tens of thousands ar...

Life, the remake

...milar plot and outcomes, although with a different cast and timing, argues UC Davis paleontologist Geerat Vermeij in a new paper in the Proceedings of the National Academy of Sciences. "Evolution at this level, like the rest of history, is predictable, perhaps more predictable than people want to imagine...

Secrets of the sea yield stronger artificial bone

... layered material, so why not use this property to cast ceramics that mimic nacre," says Antoni Tomsia of ...lieved this same freezing process could be used to cast an exquisitely layered material that comes close to mimicking nacre's toughness and lightness. They ...

Scientists discover new genetic subtypes of common blood cancer

...patients. The collaborating researchers sought to cast a wide net to capture as many of the genetic flaws in myeloma cells as possible, creating a comprehensive atlas of this cancerous genome. First, they used a technique called high-resolution array CGH (comparative genomic hybridization) to analyze sam...

Scientist warns of threat to last stronghold of endangered turtle

...e as a result. Approximately 1.4 billion hooks are cast into the world's oceans as part of industrial long-line fishing, with 37% of this fishing effort in the Atlantic. A major hotspot is found off West Africa, the focus of this study. With fishing yields decreasing in European seas the EU has struck ...

New brain hormone puts brakes on reproduction

...uch a direct inhibitor was unlikely in the complex cast of hormones and factors in the reproductive system. The inhibiting or braking hormone may complement the "gas pedal" role played by another recently discovered hormone, kisspeptin, that stimulates GnRH. The discovery in rats, mice and hamsters of th...

Duck-billed dino crests not linked to sense of smell

...ents of fossilized bone and created the first-ever cast of the lambeosaur brain, which is approximately the size of a human fist. The findings add weight to two currently popular theories: that the crests were used to create resonant sounds to attract mates or warn of predators, or that they were used for...

New maps reveal true extent of human footprint on Earth

... the planet. The exercise is already beginning to cast light on some emerging trends. Countries such as Argentina and Brazil, for instance, have increasingly cleared forests to grow soybean, a legume that has never been a traditional crop of Latin America. Scientists say the surge in soybean production t...

Scientists observe how a close bond activates the immune system

The immune system is highly complex. The cast of characters alone required to marshal an immune response to a foreign invader can number in the millions as the body's soldiers, T cells, are called into action. What triggers this complex response begins when T cells and dendritic cells, another t...

Newly discovered birdlike dinosaur is oldest raptor ever found in South America

...quisite state of preservation," Apestegua adds. A cast of the unusual dinosaur is on public display on the upper floor of The Field Museum in the MacDonald's Preparation Lab. It will be part of Evolving Planet, a permanent exhibition that opens March 10, 2006. Drifting continents About 200 million y...

The Antarctic Ocean floor

...n a mixed form. On the other hand the Box-corer is cast and once it hits the bottom it takes a 50cm x 50cm sample thereof for subsequent analysis on deck. With this sample we can quantify the number of each species per square metre, its biomass, and so on. Thus it is known as a quantified sample of the oc...

Human cerebellum and cortex age in very different ways

...ry rapidly." The scientists say their results may cast some doubt on the effectiveness of mice and other species to model various types of neurodegenerative disease: If human and chimpanzee brains age in markedly dissimilar ways, the difference between humans and more distantly related species is likely ...

On a wing and a prayer - Alaska researchers seek clues to bird flu

...health officials around the world are beginning to cast an equally uneasy eye toward migratory birds, especially in Alaska, following recent outbreaks of avian influenza in Southeast Asia and, last week, in Siberia. Alaska is at the intersection of the Asian and North American flyways for migratory birds...

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