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Tag: "paths" at biology news

Dinosaur hearing, listening to muscle noise, quieter cubicles

..." type, so-named because they follow unpredictable paths as they travel from location to location along the west coast of North America. Transients, which also distinguish themselves by feeding primarily on other marine mammals such as seals, refrain from vocalizing while hunting so that prey will not be a...

NIAID expands capability for influenza research and surveillance

...lu surveillance covering all major domestic flight paths of migratory birds. This center also will carry out a human influenza surveillance study in Thailand and will monitor U.S. agricultural workers who work with swine. Emory University, Atlanta (principal investigator—Dr. Richard Compans) This cent...

Flies don't buzz about aimlessly!

...heir environment using a series of straight flight paths punctuated by rapid 90° body-saccades. Some of the...o appear spontaneously. Are the spontaneous flight paths really random, do they serve any real purpose? Armed with a computer video tracking system and a...

Tracking sperm whales and jumbo squid

... The tagged predators and prey must have crossed paths at some time during the experiment, Gilly noted. "Based on the locations of where the squid tags first appeared on the surface, all three squid had to have moved from the Santa Rosalia fishing grounds right through the area where the whales were patr...

Out of Africa -- Bacteria, as well

...his has also given scientists new insight into the paths taken by man as he journeyed across the Earth (Nat...inear correlation with the length of the migration paths taken since they were separated. "It's actually quite logical," explains Dr. Mark Achtman, "because ...

Applied scientists create wrinkled 'skin' on polymers

...iques. The patterns can be generated along desired paths by simply controlling the relative movement of the ion beam and polymeric substrate. It's almost like using an airbrush on fabric. At a smaller scale the desired morphology of wrinkles can be achieved by controlling the ion beam intensity." Because...

Does natural selection drive the evolution of cancer?

...t to influence that evolution. Can we push it down paths that might be more beneficial to us?" One idea might be to develop new drugs that would act as benign cell boosters. Such drugs would specifically target the more benign cells in a tumor to increase their relative fitness over their malignant neig...

Robots manipulating animal behaviour

...rom exploring all the new and interesting research paths that opened during the project," says the project coordinator. "But we succeeded in our main goal ?showing that an artificial agent such as a robot can modify the collective behaviour of natural agents, in this case cockroaches, in a mixed community....

Small molecule interactions were central to the origin of life

... explains Shapiro. "The existence of side reaction paths can provide the network with the capacity of reacting to circumstances." Shapiro outlines how replicator theories, though they have been supported by "prebiotic" syntheses carried out by chemists using modern apparatus and purified reagents, are hig...

Life, the remake

...on improbable events and includes so many possible paths that the chances of repetition are vanishingly small. Vermeij argues that some innovations, such as photosynthesis, plant seeds, mineralized bones and even human language are just such good ideas that they would reappear, although at different times ...

UF scientists trace origin of shark's electric sense

...d for navigation, enabling them to swim in precise paths across large expanses of featureless ocean, Cohn said. "If you think of this in the big picture of evolution of sensory systems, such as olfaction, hearing, vision and touch, this shows sharks took a pre-existing genetic program and used it to build...

Evolution follows few of the possible paths to antibiotic resistance

...icates that of 120 harrowing, five-step mutational paths that theoretically could grant antibiotic resistan...perty of DNA is that very many distinct mutational paths link any two variants of a gene," says lead author Daniel M. Weinreich, a research associate in Harv...

Salmonella caught red-handed

... all the proteins involved in Salmonella metabolic paths during an infection. Dirk Bumann of Hannover Medic...veness. The remaining potentially useful metabolic paths are already used as the targets of current antibiotics ?or have already been considered for developm...

UF scientists reveal ancient origin of vertebrate skeleton

...ed and jawless vertebrates branched into different paths from the starting point, like the two ascending lines in the letter "V." "The lamprey is like the great-, great-, great-aunt descended from the earliest backboned animal," said Michael Miyamoto, Ph.D., a professor and associate chairman of UF's zool...

UC Berkeley researchers create a biologically-inspired artificial compound eye

...light keeps coming in, they make their own optical paths and connect with the visual system." Lee speculates that the artificial compound eyes will be put to use within a few years. Their first applications may be in ultra-thin camera phones. After that, he expects to see them used in camcorders for omnid...

UF scientists reveal ancient origin of vertebrate skeleton

...ed and jawless vertebrates branched into different paths from the starting point, like the two ascending lines in the letter "V." "The lamprey is like the great-, great-, great-aunt descended from the earliest backboned animal," said Michael Miyamoto, Ph.D., a professor and associate chairman of UF's zool...

Intelligently designed molecular evolution

Evolutionary paths to new therapeutic drugs, as well as a wide assortment of other enzyme products, have been created through, of all things, intelligent design. A team of researchers with the Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of ...

Lateral thinking produces first map of gene transmission

... aren't directly related. The map has traced the paths of lateral gene transfer, from the bacteria that donated the genes to the ones that received them. Their results clearly show genetic modification of organisms by lateral transfer is a widespread natural phenomenon, and it can occur even between di...

Genetic testing still smart choice, despite uncertainties

...ram and other programs to illustrate the different paths an embryo takes as it develops. While half of embryos turn out normal, with no mosaicism, the other half produce irregular cells as they divide. Embryos that become mosaic after their cells divide twice typically stop progressing by the time they h...

Nanotechnology to provide portable genetic risk detection

...unique in that it uses individual inlet and outlet paths for each cantilever rather than one for the whole array, something that has never been achieved before," Lechuga says. The cantilever array and microfluidic header are due to be low-cost components that would be disposable if used for medical analys...

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