little 2 3

Tag: "little" at biology news

Discovery of new cave millipedes casts light on Arizona cave ecology

...es are extreme habitats that have received far too little attention. The arthropods that can survive these dark and resource-poor environments can tell us a lot about what makes them so successful as a group." While conducting ecological inventories of 30 caves on the Colorado Plateau of northern Arizona...

Cloning the smell of the seaside

...g it is not necessarily good for you." DMS is a little known but important gas. Across the world's oceans, seas and coasts, tens of millions of tonnes of it are released by microbes that live near plankton and marine plants, including seaweeds and some salt-marsh plants. The gas plays an important role i...

Studies force new view on biology of flavonoids

...tant for their antioxidant activity, actually have little or no value in that role, according to an analysis...f flavonoids to trigger them ?conceptually, it’s a little like a vaccine in which only a very small amount of an offending substance is required to trigger a ...

UCI scientists reconstruct migration of avian flu virus

...een passed on from a bird host to humans; there is little evidence that the virus can efficiently be passed on from human to human. Although fewer than 300 recorded human cases of this flu have been recorded worldwide, its high mortality rate raises concerns that if the virus mutates to where humans can pas...

Paper challenges 1491 Amazonian population theories

...we have one lake occupied and used, and the others little used or not used at all," he says. "So this is a total of 10 lakes that provide three separate instances -- one in Brazil, one in Ecuador and one in Peru, where there is evidence of long, continuous occupation of more than 5,000 years that did not s...

Mechanism of nicotine's learning effects explored

... key problem in designing such drugs has been that little was known about the detailed mechanism by which nicotine exerts its learning-enhancing effects. Now, researchers have discovered important details of how nicotine adjusts the signaling properties of neuronal wiring to enhance memory. Such signalin...

Row over study puts Korea's scientific community under scrutiny again

...g scandal." Professor Kim's intervention leaves little doubt about how seriously the CHA group views the potential of the incident to damage its bid to inherit Hwang's crown, says Gornall. Before his fall from grace, Professor Hwang received the bulk of Korean government funding in stem cell research. Bu...

Study finds antibiotic resistance in poultry even when antibiotics were not used

...ng the use of antibiotics on poultry farms will do little ?if anything ?to reduce rates of antibiotic resistant bacteria that have the potential to threaten human health. Dr. Margie Lee, professor in the UGA College of Veterinary Medicine, and her colleagues have found that chickens raised on antibiotic-f...

Scientists find genes involved in the battle between Hessian flies and wheat

...g poisonous oxygen compounds." Researchers know little about the biochemical mechanisms involved when larvae - the early stages of the gnat-sized Hessian fly - try to feed on resistant wheat plants that are able to defend themselves, Shukle said. While the insects can't establish feeding sites on resist...

Mine runoff continues to provide clues to microbial diversification

...solve and differentiate peptides that differ by as little as one amino acid. Nathan VerBerkmoes of the lab’s Chemical Sciences Division was instrumental in designing the experiments and acquiring the mass spectrometry data while Manesh Shah of the Biosciences Division provided the bioinformatics horsepow...

Navigable nanotransport

...s with diameters ranging from 50 to 600 nm. The little disks used in this process deserve special consideration: Kim and his colleagues chose to use curcurbiturils. These disk-shaped molecules have a cavity at their center. As their shape resembles a hollowed-out pumpkin, this class of compounds was name...

Human's ecological footprint in 2015 and Amazonia revealed

...ion, economic structure and age of population have little effect. Modeling global average productivity to compare environmental tradeoffs and human-induced stressors in the environment Thomas Dietz (Michigan State University), Eugene Rosa (Washington State University) and Richard York (University of Oregon...

Need oxygen? Cells know how to spend and save

...h whatever amount is available at the moment. Too little oxygen threatens life by compromising mitochondria that power it, so when oxygen is scarce, cells appear to adjust by replacing one protein with an energy-efficient substitute that "is specialized to keep the motor running smoothly even as it begins ...

Vitamins: Science doesn't always match policy

...e regulated, as they are currently subject to very little federal regulation. "Right now, the term multivitamin encompasses hundreds, if not thousands, of products with varied content and dose of vitamins and minerals. It's really difficult to guide customers if we don't even know what is in the vitamins th...

Scripps research study shows humans and plants share common regulatory pathway

...ous models of Nod1 activation have been described, little has been known about other proteins that might aff...genetic crossover between plants and mammals, very little is known about this common human-plant regulatory pathway. Ulevitch speculated that certain protein ...

Nanotextured implant materials: blending in, not fighting back

...sed on the materials used in stents ?those springy little cylinders that hold open once-clogged arteries ?and artificial blood vessels. Currently only about 30 percent of small diameter blood vessel grafts (less than 6 mm diameter) last more than five years, and up to 20 percent of stents need to be replace...

Imaging pinpoints brain regions that 'see the future'

...ars. But until recently, there's been surprisingly little research into cognitive processes underlying anoth...d brain damaged persons with amnesia. "There's a little known and not that well investigated finding that if you have an amnesic person who can't remember t...

New details on how the immune system recognizes influenza

... comes from rabbits, ferrets and monkeys, and very little comes from humans or birds. In fact, only one antibody epitope came from a human. The LIAI researchers say more studies should be focused on identifying human T and B cell epitopes from human and avian strains of influenza virus--especially those ass...

LIAI completes world's most comprehensive analysis on influenza virus data

...e done in animal models, primarily mice, with very little data coming from studies with humans or birds. Only one of the antibody epitopes came from a human. "This is understandable given the ethical and health issues of testing a potential pathogen in humans," Wilson said. "However, based on this informa...

Tracking sperm whales and jumbo squid

... down there," he said. "We also know relatively little about the behavior of jumbo squid in the wild," Gilly added. "For example, it was only a couple of years ago that we discovered an area in the central Gulf of California where spawning and mating of these animals probably take place." Electronic ...

1 2 3 4 5 6 7 8 9 10