trap

Molecular Motors Cooperate In Moving Cellular Cargo, Study Shows

...ture, Selvin wants to combine FIONA and an optical trap technique to monitor the speed and direction of a peroxisome, and the force acting upon it. "By measuring force we can determine how many molecular motors are working together," Selvin said. "This will help us further understand these marvelous litt...

Integration of Agilent's MS technology, Proteome Systems' software to help scientists in proteomics research

...e with the Agilent XCT, XCT Plus and XCT Ultra ion trap mass spectrometers. Proteome Systems developed GlycomIQ to address the emerging field of glycomics, which examines how glycosylation, or the addition of sugars to proteins, affects biological processes and systems. GlycomIQ comprises kits, consumabl...

Friendly bacteria in humans may protect against HIV

...eria already living in some humans that target and trap HIV and may protect against infection. They report their findings today at the 2005 American Society for Microbiology Beneficial Microbes Conference. "I believe every life form has its natural enemy, and HIV should not be the exception," says Dr. Li...

Product improves peptide identification for proteomics research

... (NYSE: A) today introduced a high-performance ion trap mass spectrometer (MS) that allows pharmaceutical ...atani, product marketing manager for Agilent's ion trap mass spectrometers. "The high resolution, scan speed and sensitivity of the LC/MSD Trap XCT Ultra ma...

Beneficial Beetles Battle Pesky Saltcedar

...streams overflow their banks, saltcedar bushes can trap natural flood debris, blocking waterflow and causing new, erosive channels to form. These channels sometimes undercut farm roads and fields, causing them to collapse. What's more, river rafters or thirsty wildlife and livestock often can't get throu...

Alien woodwasp, threat to US pine trees, found in N.Y.

...e loblolly pines in Georgia. Finding one bug in a trap is no small matter. Where there's one, there's likely to be more, says E. Richard Hoebeke, a Cornell senior extension associate in entomology. "Whenever you find an insect in a trap, it probably is established." Hoebeke was sifting through thousands...

'Sinkers' provide missing piece in deep-sea puzzle

...mmon, the odds of a sinker even hitting a sediment trap in the open ocean are extraordinarily small. In addition, sinkers often simply disintegrate when they contact a solid object. So either the scientists were not seeing sinkers at all, or if they did see them, it was in the form of a big glob in the bo...

Otter adaptations: How do otters remain sleek and warm

...ecreases heat loss. Also, the grooves between fins trap air bubbles, which help increase the thermal insulation of the otter's coat. Indeed, biologists have observed otters actively blowing air bubbles into their fur while grooming, and their energetic rolling catches air in their fur. "The air insulates ...

Genome Sequence for Haemophilus Influenzae Completed

...ecreases heat loss. Also, the grooves between fins trap air bubbles, which help increase the thermal insulation of the otter's coat. Indeed, biologists have observed otters actively blowing air bubbles into their fur while grooming, and their energetic rolling catches air in their fur. "The air insulates ...

NHGRI expands effort to revolutionize sequencing technologies

...incorporates a nanopore mechanism with a molecular trap that forces the DNA molecule to oscillate back and forth between electrodes, measuring the electrical signal associated with each specific base. Stephen W. Turner, Ph.D., Nanofluidics, Menlo Park, Calif. $6.6 million (3 years) "Real-Time Multiplex S...

Leading lampreys to slaughter: Pheromone for scourge of Great Lakes identified

...er from larval lamprey nurseries are being used to trap adults on an experimental basis in Michigan streams. "Using these extracts has been shown to work," said Sorensen. "Capture rates are up six-fold." Most lamprey traps have been simple, rather ineffective devices, but now the attractants have opene...

Jefferson scientists identify gene defect leading to abnormal skin development and cancer

...er from larval lamprey nurseries are being used to trap adults on an experimental basis in Michigan streams. "Using these extracts has been shown to work," said Sorensen. "Capture rates are up six-fold." Most lamprey traps have been simple, rather ineffective devices, but now the attractants have opene...

MRSA use amoeba to spread, new research shows

...e concern is that amoebal cysts have been shown to trap pathogens and could potentially be dispersed widely by air currents, especially when they are dry. "Replication of MRSA in amoeba and other protozoa raises several important concerns for hospital hygiene." In laboratory tests, the researchers found...

A biosensor layered like lasagna

...me into contact with the enzymes." "The polymers trap the enzymes in place," Liu said. "You can go up to five or six layers to improve the sensitivity of the detector, but after that, the more enzyme layers" inhibit diffusion of the glucose. Now that the glucose enzyme biosensor has passed the test, L...

Scientists make first step towards 'holy grail' of crystallography

...y Imperial's material scientists, as a scaffold to trap and encourage the growth of protein crystals. BioG...al, with a variety of different size pores able to trap different size proteins. They found BioGlass induced the crystallisation of the largest number of ...

Structure determined for p53 tumor suppressor protein as bound to DNA for anti-cancer activity

...t of the protein's core domain. That allowed us to trap the form of the p53 dimer that's compatible with DNA binding. And we solved the structure. We saw what it looked like." ...

WWF captures first-ever photo of wild rhino on Borneo

...original press release A motion-triggered camera trap set up in a remote jungle has captured the first-ever photo of a rhino in the wild on the island of Borneo, World Wildlife Fund and the Sabah Wildlife Department announced today. The rhino is believed to be one of a population of as few as 13 whose ...

UCI scientists find chlorine may contribute to ozone formation

...gical conditions that restrict air circulation and trap pollutants. Ozone is a highly reactive and unstable gas that damages living cells. Even low levels of ozone can harm the upper respiratory tract and the lungs, causing a cough, throat irritation and reduced lung function, and aggravating the effects ...

Pollutant haze heats the Arctic

...mixes with thin clouds, making them better able to trap heat. The effect makes the Arctic 2 degrees to 3 degrees Fahrenheit warmer during polluted, cloudy episodes than it would be if the air was clean, concludes the study by Tim Garrett, an assistant professor of meteorology, and Chuanfeng Zhao, a doc...

Ohio University researchers discover evolutionary oddity in flamingos

...ing it out the sides. Fringed plates on the tongue trap algae and crustaceans in the circulating water. "The flamingos' feeding habits have captured people's curiosity for ages, but that wasn't the original focus of our research," said Casey Holliday, who recently earned a doctorate in biological sci...

Far more than a meteor killed dinos

...ded the demise of the dinosaurs, but so did Deccan trap volcanism's greenhouse warming effect and finally a second huge impact that finished them off. So where's the crater? "I wish I knew," said Keller. "There is some evidence that it may have hit in India, where a crater of about 500 kilometers in di...

'Fruit fly dating game' provides clues to our reproductive prowess

...ded the demise of the dinosaurs, but so did Deccan trap volcanism's greenhouse warming effect and finally a second huge impact that finished them off. So where's the crater? "I wish I knew," said Keller. "There is some evidence that it may have hit in India, where a crater of about 500 kilometers in di...

Edge density key to controlling gypsy moth spread

...n front for their theoretical model. The pheromone trap data were collected from 1988 to 2004. They used a theoretical model to show how an interaction between negative population growth at low densities ?"the Allee effect" ?and the existence of a few satellite seed colonies created by human transfer o...

Biologists probe the machinery of cellular protein factories

...the ribosome does its work. "Our next goal is to trap the ribosome in other functional states to get more frames of the movie," he said. The authors of the paper, in addition to Noller, are postdoctoral researcher Andrei Korostelev, senior scientist Sergei Trakhanov, and postdoctoral researcher Martin...

Nature's process for nitrogen fixation caught in action

...uire adding electrons and protons." In order to trap the process at a specific stage, the researchers s...t have been working for years to figure out how to trap and characterize nitrogenase intermediates. Their success was reported in the Journal of the America...

Weighty viruses

...entle ionization techniques and a miniaturized ion trap of their own devising to accurately analyze the ma...he virus particle in the electric field of the ion trap begins to oscillate. This oscillation depends on the mass (and charge) of the virus. The team was...

Coated nanoparticles solve sticky drug-delivery problem

...coveries are important because mucus layers, which trap and help remove pathogens and other foreign materials, can block the localized delivery of drugs to many parts of the body, including the lungs, eyes, digestive tract and female reproductive system. Because of these barriers, doctors often must presc...

Yale biologists 'trick' viruses into extinction

...le biologists are reversing the logic by trying to trap viruses in habitats that force their extinction, a... mixtures of ordinary "source" bacteria and mutant trap cells that act as "sinks." Their research showed that when the number of trap cells exceeded a ...

Protein fragments sequenced in 68 million-year-old Tyrannosaurus rex

...C column. To maximize his yield, Asara used an ion trap mass spectrometer, which captures and holds peptides through time. The collected peptides were measured for mass and, in a second step, isolated and fragmented to reveal their amino acid sequence. Using this two-step, or tandem (MS/MS), procedure, As...

Tropical forests -- Earth's air conditioner

Planting and protecting trees—which trap and absorb carbon dioxide as they grow—can help to remove carbon dioxide from the atmosphere. But a new study suggests that, as a way to fight global warming, the effectiveness of this strategy depends heavily on where these trees are planted. In par...

Magnetic computer sensors may help study biomolecules

... stack below the membrane—a field strong enough to trap nanoscale magnetic particles. The NIST experime...nts demonstrated that the spin valves not only can trap magnetic particles, but also can be used as the pivot point for rotating strands of particles when a...

In nature, proteins sweep up nanoparticles

... key role in bioremediation strategies designed to trap harmful metals such as arsenic, lead, uranium, and plutonium. “We have found, in the environment, that cells release proteins and polypeptides which promote the aggregation of nanoparticulate metals,” says John Moreau, lead author of the study and...

Caribbean frogs started with a single, ancient voyage on a raft from South America

...e than a mile across and could include plants that trap fresh water and insect food for frogs," Hedges said. It is not likely that the frog species dispersed simply by swimming because frogs dry easily and are not very tolerant of salt water. In addition to the study's discoveries about Caribbean and ...

Dirty snow may warm Arctic as much as greenhouse gases

...rs with many forest fires. Greenhouse gases, which trap outgoing energy, are primarily responsible for the remaining temperature increase and are considered the Earth’s most important overall climate changing mechanism. Other human influences on Arctic climate change are particles in the atmosphere, inclu...