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Tag: "force" at biology news

NHGRI aims to make DNA sequencing faster, more cost effective

...bel Free Genome Sequencing" This team will apply force spectroscopy, a technique used to understand the m.... Using optical, near-field probes, the methods of force spectroscopy can be advanced into techniques having massively parallel format, where millions of sin...

Archerfish tune their shots to universal properties of prey adhesion

... discovered that archerfish automatically tune the force they use to dislodge prey according to prey size, ...ks such that prey are hit with about ten times the force that adhesive organs of animals of that size could sustain. The new work also revealed that the ...

A new approach to growing heart muscle

...d a more cohesive tissue that contracted with more force ?a key finding because embedding has been seen as ...possible by a precise instrument called an optical force transducer that gives more precise readings than that used by other teams. The measurement showed...

Plants give up answers in the war on bacteria

...uce a phytotoxin, a chemical called coronatine, to force the pores back open. For bacteria, entry is crucial to causing disease and probably survival. They could die if left lingering on the surface. Animal-based bacteria do not produce coronatine. "Now that we know a key step in bacteria's attack, we ha...

Drug can quickly mobilize an army of cells to repair injury

...normal repair mechanism instead of using the brute force of injecting a mixture of many cell types from bone marrow into the affected area." The research group has also shown that after treating human subjects with AMD3100 or G-CSF, angiogenic cells can be collected from the blood by a technique that sepa...

Hormone linked to brain's cravings for food and other energy sources

...tions. "This makes sense because the major driving force of life is seeking energy to survive," he said. "Future studies will explore the relationships between ghrelin and cocaine addiction." ...

Twenty Years of Malaria Research: Outcomes and Perspectives

...my, targeting foreign aid workers in an attempt to force the refugees to return to Burma. During the attack, Professor Nosten and his colleague Rose McGready had been forced to hide in the jungle. Now, Professor Nosten is assisted in his work by Thai nationals from the region, including a number of local...

MIT designs portable 'lab on a chip'

...ch offer portability. The first is to mechanically force fluid through microchannels, but this requires bulky external plumbing and scales poorly with miniaturization. The second approach is capillary electro-osmosis, where flow is driven by an electric field across the chip. Current electro-osmotic pum...

Paramecia adapt their swimming to changing gravitational force

... many single-celled organisms living in water, the force is always against them. The classic example is the...break-even point, the physicists could measure the force needed to counter the gravitational effect: 0.7 nano-Newtons. For comparison, the force required to ...

Mars mission Risk 29: Scientists research ways to reduce radiation-induced brain damage

...s captured the imagination for decades, and gained force after the Astronaut Neil Armstrong took his first step on the moon in 1969. But flying to Mars, even without humans aboard, is a monumentally risky engineering feat. Since 1998, the United States has completed seven Mars missions. Four failed when th...

Coral reefs are increasingly vulnerable to angry oceans

...he sea-bed to which they attach, and the change in force of the waves as they move across the reef," said M...nt, crest, flat or the back of the reef, where the force of the waves progressively dies away. The team ran a field test at Lizard Island, in the northe...

A new understanding of how cells defend themselves against bacterial pore-forming toxins

...t inflammasomes act like a sort of roving security force inside the cell, detecting a variety of danger signals such as bacterial RNA or bits of bacterial flagellin. The inflammasomes join together and activate a protein, caspase-1, that in turn triggers an inflammatory response. Van der Goot and her co...

Handling HPV vaccines and screening: The views of 100 authors

...ding to Dr. Xavier Bosch, Guest Editor and driving force behind this monograph; "The background, the results, the challenges and a set of proposals are analyzed by a group of 100 independent experts, leaders in the various relevant fields". This monograph was officially launched during the 23rd Internatio...

UNC scientists solve mystery of how largest cellular motor protein powers movement

...rom ATP is very far away from where the mechanical force occurs. The mechanical force must be transmitted over a large distance.? The study was published online Nov. 22 in the Proceedin...

Female pronghorns choose mate based on substance as well as show

...ate choice is likely a very important evolutionary force that does much more than select for ornaments in a few species," said John Byers of the University of Idaho. "It may be universally important in maintaining population genetic quality." In work supported by the National Science Foundation (NSF), By...

Microcapsules like it hot and salty

...r on the one hand, and the electrostatic repelling force between like charges in the polymer shell which makes the capsule swell on the other. "Depending on the strength of the two competitors, the exact size of the capsule can be calculated in advance for a very specific salt concentration and temperature...

Stormy days ahead for coral reefs

...the sea-bed to which they attach and the change in force of the waves as they move across the reef. "T...nt, crest, flat or the back of the reef, where the force of the waves progressively dies away. The team ran a field test at Lizard Island, in the nort...

Parental genes do what's best for baby

...tle of the sexes?long considered the major driving force in a baby’s development is being challenged by a new genetic theory of parental teamwork. Biologists at The University of Manchester say the prevailing view that maternal and paternal genes compete for supremacy in their unborn offspring fails to an...

With record resolution and sensitivity, tool images how life organizes in a cell membrane

...osition of a sample, it fills a gap left by atomic force microscopy, which provides high-resolution informa... information content.'' Boxer's group used atomic force microscopy to locate interesting places and then employed the NanoSIMS 50 to determine what was ther...

Light-sensitive photoswitches could restore sight to those with macular degeneration

...es are experimenting with other molecules that can force shape changes, looking for improved ways to attach shape-changing molecules to proteins, developing means to shuttle these photoswitches into cells, building artificial genes that can be inserted into a cell's DNA to express the photoswitches in the ...

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