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Curved in Biological News

Shell-breaking crabs lived 20 million years earlier than thought

... claws, this ancient crab also sported a curved tooth on the movable finger of the larger right ... could manipulate prey into position. Also, the curved tooth increased the power of the claw. Dietl ... to search for similar examples of these curved tooth structures from the Late Cretaceous period, ...

Telescope embedded in glasses lens promises to make driving easier for visually impaired

... of Murcia, Spain, designed a wide-field telescope made of straight and curved mirrors built completely within the spectacle lens, The Journal of ... inside the spectacle lens they had to obtain the magnifying power from curved mirrors instead of lenses, as mirrors maintain their power when embedded ...

Study links low-frequency hearing to shape of the cochlea

... to mammals. Birds and reptiles generally have plate-like or slightly curved versions of this critical organ, limiting the span of octaves that they ... whispering gallery effect in which soft sounds that travel along curved walls in a large chamber remain loud enough that they can be heard clearly ...

Carnegie Mellon develops computer model to study cell membrane dynamics

... simulation, the artificial membrane began curving in places. In creating curved membrane structures, each disk bent the membrane slightly. This local ... theoretical tools to study the transport of stresses and forces through curved membranes. ...

Biophysical Society announces new and notable symposium speakers

... complexes. It shows the kinesin13 motor domain interacting with a curved protofilament and reveals a new microtubule binding site on the notor ... map revealing the interaction of the kinesin-13 motor domain with a curved protofilament and provides a snapshot of the depolymerization cycle. ...

What scientists know about jewel beetle shimmer

... The beetle's structure also forms helices similar to a cholesteric liquid crystal in that its straight cells sit on or are used to form the curved structure of its external skeleton. Research shows that when the pitch of the helix of cholesteric liquid crystals is close to the wavelength of ...

2000-year-old statue of an athlete sheds light on corrosion and other modern challenges

... Growth & Design , a bi-monthly journal. Best known as "The Scraper," the statue depicts an athlete scraping sweat and dust from his body with a small curved instrument. In the report, Davorin Medakovic and colleagues point out that Apoxyomenos was discovered in 1998 on floor of the Adriatic Sea. While ...

Flexible solar strips light up campus bus shelter

... of engineering entrepreneurship and innovation graduate, also helped develop the initiative. The ability to bend the solar cells to fit the curved roof of the bus shelter is one of the main features of the technology. The flexibility is achieved by tiling a large number of small silicon ...

Spookfish uses mirrors for eyes

... such that they direct the light to a focus. Partridge's computer simulation showed that the precise orientation of the plates within the mirror's curved surface is perfect for focusing reflected light onto the fish's retina. The use of a single mirror has a distinct advantage over a lens in its ...

Penn scientists discover cells reorganize shape to fit the situation

... Paris, combine genetics, live-cell imaging, and microfluidics technology. They were able to force normally rod-shaped yeast cells to grow within tiny curved channels. Using the channels, they made rod-shaped cells deform into curved-shaped mutant cells and conversely, curved-shaped cells straighten out ...

Hurricane Gustav

... left). Gustav formed on 25 August 2008 some 400 km southeast of Port-au-Prince, Haiti (seen above far right image), when a tropical wave developed curved bands and an upper level eye feature (visible), causing the U.S. National Hurricane Center to designate it Tropical Depression Seven. Later that ...

'Nanoglassblowing' seen as boon to study of individual molecules

... paper observed that in some cases, the heat of the annealing furnace caused air trapped in the channel to expand the glass cover into a curved shape, much like glassblowers use heated air to add roundness to their work. The researchers looked for ways to exploit this phenomenon and learned ...

Floating a big idea: MIT demos ancient use of rafts to transport goods

... of the raft design may have seemed familiar to the Europeans, some details were unique, such as masts made from flexible wood so that they could be curved downward to adjust the sails to the strength of the wind, the centerboards used as a steering mechanism, and the use of balsa wood, which is ...

National Zoo scimitar-horned oryx going into the wild

... and marks on the face and a long, dark, tufted tail. They stand up to 4 feet and 6 inches tall at the shoulder, and both male and female oryx have curved horns that grow to be several feet long. Although the animals have been returned to Tunisia, scientists cannot just simply release them into the ...

Moss protein plays role in Alzheimer's disease

... and the result was an obvious change- a phenotype. Moss lacking presenilin looked different, growing with straight, rigid filaments instead of curved and bent filaments like the parent moss with the presenilin gene intact. That showed the gene has an obvious function that obviously, did not ...

Unusual fish-eating dinosaur had crocodile-like skull

... us that in some cases there is more than one evolutionary solution to the same problem. The unusual skull of Baryonyx is very elongate, with a curved or sinuous jaw margin as seen in large crocodiles and alligators. It also had stout conical teeth, rather than the blade-like serrated ones in ...

Biophysical Society announces 2008 International Travel Awards

... Release by the SR in Rabbit Ventricular Myocytes. Maria A. Frias, Universidad de Tucuman, Argentina, Carbonyl Configuration and Hydration of curved and Ripples States of Lipid Interphases. Silvina B. Gayol, Centro de Neurociencia de Valparaiso, Chile, In Xenopus Oocytes Glycosylation of ...

Brilliant perspectives

... existing 2.3-kilometre-long ring accelerator PETRA. The new experimental hall will be almost 300 metres in length, and its shape will conform to the curved contour of the accelerator ring. An area of about 10 000 square metres will contain 14 experimental stations that can accommodate up to 30 ...

Cilia: small organelles, big decisions

... a key family of proteins known as Wnts. The Wnts in turn trigger a cascade of shape-making decisions that guide cells to take specific shapes, like curved eyelid cells or vibrating hair cells in the ear, and even make sure that arms and legs emerge at the right spots. Our experiments go to the ...

New southernpeas developed by ARS, cooperators

... appear in traditional southern cuisine in soups, salads, casseroles and fritters, a fried quick-bread. GreenPack-DG forms long, slightly curved pods that hold 12 plump, olive-green peas, each with a pink eye. It is the only pink-eyed southernpea that has two genes for greenness, not just one. ...

'Alien' jaws help moray eels feed

... their mouths, Mehta found. Instead, they first grasp food with their powerful, toothsome outer jaws. Then the pharyngeal jaws, armed with large, curved teeth, reach forward and seize it. At the same time, the outer jaws release the prey and the pharyngeal jaws bring it back for swallowing. The whole ...

The making and breaking of microtubules

... At low temperatures, GMPCPP-bound tubulin forms curved ribbons of a few protofilaments side by side; as ... suggesting that the ribbons and gently curved sheets correspond to the polymerizing ... in significantly different ways, resulting in a curved protofilament that cannot form lateral contacts. ...

Carnegie Mellon scientists find key HIV protein makes cell membranes bend more easily

... and proteins by the T cell. But the Carnegie Mellon work suggests that FP-23 plays another, equally important function — reducing the free energy of curved fusion intermediates. These fleeting shapes arise and disappear as HIV enters a T cell. Normally, a cell membrane resists bending. Scientists can ...

CT scan reveals ancient long-necked gliding reptile

... Close up CT scan, composite image of fossil gliding reptile Mecistrotrachelos apeoros. curved foot and ribs are clearly visible The fossilized bones of a previously unknown, 220 million-year-old long-necked, gliding reptile may remain forever ...

New system could drastically reduce herbicide use

... Gingrich, a master's student, have worked steadily on the system design that cuts the weed and applies herbicide. They have also mounted the curved solar panel that powers the robot. "We custom-built a shelf that holds the solar panel," said Gingrich. "It also protects the machine from ...

Ferns provide model for tiny motors powered by evaporation

... is coated with silicone and the hit with light, causing a pattern. The residual pattern is lifted off and that is used for the device. It resembles a curved spine with equally spaced ribs fanning outward from the spine. To make the device move, Borno said, they load the space between the ribs with ...

Robots manipulating animal behaviour

... computer processors, a light-sensing camera and an array of infrared proximity sensors. When dropped into a small experimental area with a maze of curved walls, the robots move, turn and stop. They can navigate their way safely by avoiding the walls, obstacles or each other, follow the walls, ...

Researchers unravel DNA tangles and enzyme seamstresses

... same general principles that can be applied to other areas of science and engineering to address various entanglement problems," Chan says. The curved distinctions between DNA strands may allow the seamstresses of the process -- the topoisomerases -- to identify linked DNA loops, cut a strand apart, ...

Bats use touch receptors on wings to fly, catch prey, study finds

... the wing. These cells were most active when airflow ?particularly turbulent airflow ?stimulates the hair. When a bat's wing isn't properly angled or curved during flight, air passing next to the wing can become turbulent. Merkel cells help bats stay aerodynamically sound by alerting them when their wing ...

Researchers find new giant amphibian fossils in Africa

... to crocodiles in shape. Nigerpeton ricglesi had rounded noses, with small eyes and both small and large fang-like teeth. Saharastega moradiensis had curved 'horns' on the back of its head and an array of small teeth. "Our findings show that climate change more than 250 million years ago had a dramatic ...
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(Date:4/18/2014)... researchers led by a University of California, Riverside professor ... million Department of Defense grant to uncover fundamental design ... the predictable design of light-weight, tough and strong advanced ... plants and animals, including the mantis shrimp, toucan and ... constructed over millions of years and coming up with ...
(Date:4/17/2014)... of stem cell therapies to cure a variety of ... populations based on cell surface markers. Researchers from the ... is highly expressed in a type of stem cells ... in an article in BioResearch Open Access , ... The article is available free on the ...
(Date:4/17/2014)... births, Down syndrome - or trisomy 21 - is ... results from a chromosomal abnormality where cells of affected ... of the human genome). A study conducted by Stylianos ... Medicine and Development at the University of Geneva (UNIGE) ... light on how the extra chromosome 21 upsets the ...
Breaking Biology News(10 mins):Mantis shrimp, toucan and trilobite, oh my 2Mantis shrimp, toucan and trilobite, oh my 3Trisomy 21: How an extra little chromosome throws the entire genome off balance 2Trisomy 21: How an extra little chromosome throws the entire genome off balance 3
(Date:4/17/2014)... of Medicine (BUSM) have discovered that the anti-seizure ... model. The findings, reported in the American ... lead to more effective treatments for alcoholism. , ... leading causes of illness and death in the ... limiting the productivity of workers and necessitating huge ...
(Date:4/17/2014)... by researchers at UC Davis has shown that the ... in cell division, also boosts the mitochondrial activity to ... complex has been shown to perform both jobs. This ... to control cellular energy production, potentially advancing cancer care ... in the journal Developmental Cell . , "These ...
(Date:4/17/2014)... by Cesar A. Arias, M.D., Ph.D., at The University ... identified a new superbug that caused a bloodstream infection ... April 17 issue of The New England Journal ... of a class of highly-resistant bacteria known as methicillin-resistant ... major cause of hospital and community-associated infections. The superbug ...
(Date:4/17/2014)... days to find a colored ribbon representing a disease. A ... what color ribbon does one think of with lung cancer?, ... many suffering from the disease, black may be the only ... of lung cancer patients, primarily smokers between the ages of ... the stigma often felt by these patients, the emotional toll ...
(Date:4/17/2014)... alleviates muscle soreness after exercise, according to a ... at Chicago. , The study, reported online in ... Physical Medicine and Rehabilitation , also showed that ... not exercised, suggesting that massage has benefits for ... , Improved circulation and relief of muscle soreness ...
Breaking Medicine News(10 mins):Health News:BUSM researchers find anti-seizure drug may reduce alcohol consumption 2Health News:Dual role: Key cell division proteins also power up mitochondria 2Health News:New MRSA superbug emerges in Brazil 2Health News:Unraveling the 'black ribbon' around lung cancer 2Health News:Massage therapy improves circulation, eases muscle soreness 2
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