Tag: "packed" at biology news

Transgenic Mice Created By Researchers May Shed Light On Human Heart Disease

... healthy heart muscle is very organized anddensely packed with structural protein that allows it to contract, shesaid. But in heart muscle carrying the mutant form of the myosin gene, thenormal, parallel alignment of muscle cells is lost and the cells appeardisorganized. Although people with hypert...

Small-Scale Fires Key To Understanding Forest Structure

... spacedlarger trees became closed forests, densely packed with smaller trees, saplingsand seedlings. Fire suppression has also changed the forest composition frommostly pine, which are fire tolerant, to firs which are more shade tolerant butfire intolerant. To learn about the pre-Euroamerican fire history,...

The First Rejection: Eggs Sequester Bits Of Sperm For Later Elimination

...the amount of mitochondrial derivative that can be packed into it) gets. The egg still rejects the paternal mitochondrial DNA by sequestering it to the developing fly's gut for future elimination. This work indicates that "previously unrecognized sperm-egg interactions are important to the success of a dev...

UB Fertility Researchers Find They Can Predict Pregnancy By Assessing Two Sperm Abnormalities

... to the untimely unraveling of the sperm's tightly packed genetic cargo. If this begins before the sperm has penetrated the egg, the sperm head swells and fertilization becomes impossible. "In our study, when pregnancy occurred, we knew that the partner's sperm were capable of fertilizing the egg," B...

Penn State Process Removes Rocket Fuel Ingredient From Drinking Water

...lar conditions. The Penn State researchers packed glass tubes with sandy soil, added amixture of naturally occurring bacteria that had been shown to remove chlorateand perchlorate, and waited until the bacteria, through normal growth processes,coated the soil grains by forming a biofilm and used up ...

Gritty Research Leads Scientists To Metal-Loving Discovery

...r attaching "monolayers" (single layers of densely packed molecules) to the pore surfacesthroughout the ceramic material. The molecules are custom designed to seek out mercury, lead,chromium and other toxic or precious metals. "SAMMS can be tailored chemically to selectively bind a wide range of contaminan...

Computer Simulation To Predict Forest Fires

...without trees, no fire ensued. Where the grid was packed with trees, a large fire ensued. The scientists say that the only previous application of this type of model was to study measles epidemics in isolated populations. The scientists ran the model under different scenarios of forest density. Interes...

Birds Of A Feather: The Physics Of Flocks

...ctions of such things as how densely the birds are packed together incertain situations and how this density fluctuates. Most importantly, theirequations bring out some of the birds' properties that were not in the originalmodel. Ultimately, these properties explain how the birds could stay togetherin the ...

The UK Braces Itself For The Flu Season, Are You Looking Information On The Virus?

...e is aimed primarily at the general public. It is packed full ofuseful information which could also be used in influenza news and featurearticles....

Biotech Creates New Solutions And New Problems

...ave found a use for blemished pears that cannot be packed for fresh market orcanned. The scientists suggest that making pear cider could greatly improve thedemand for pears and enable vintners to make use of wineries during theoff-season. Their experiments demonstrate that an ultrapremium-quality cider canb...

Coastal Birds "Feel" Their Prey Under The Sand

... beak loosen the grains of sand, which then become packed togethermore tightly, displace the interstitial water and cause the residual pressurearound the object concerned to increase. The birds' ability to detect food also explains why knots can find enoughto eat on intertidal flats where there are only fe...

Unprecedented View Of RNA Structure Captured

...RNA. Itsmany entwined helical elements are tightly packed into an extremely complicated,globular structure, making even a simple viewing a difficult biophysicaladventure. By binding a particularly stable kind of protein commonly known as L11 to RNAsynthesized in the lab, Draper's group created an RNA-protei...

Antibiotics-resistant bacteria

... report in the July 1 issue of Nature. The tightly packed configuration of the DNA promotes the ability of t...s in stressed cells. Within the orderedand tightly packed DNA-Dps structure, the DNA is very effectively protectedagainst various assaults. "In natural enviro...

Herbivores, pull up a chair to the table: salt marsh plants at higher latitudes more palatable, according to new study

...y. Plant material from Rhode Island was collected, packed on iceand immediately flown to Sapelo Island, where it was exposed to a group ofherbivores on the same day. Likewise, southern plants were flown to Rhode Island in the same manner for usewith northeastern herbivores. Leaf beetles, grasshoppers, moth ...

Fragment of AIDS virus may be used to deliver therapeutic proteins to cells

...ble to coax bulky biomolecules through the densely packed fatty molecules ofthe cell membrane. In the Septe...rier. The blood-brain barrier isa layer of tightly packed cells designed to keep most large molecules--includingfluorescein--out of the central nervous system...

On the floor of the sea: USGS biologists search for rare, white abalone

...r, chiller, UV sterilizer, an aerationsystem and a packed column for oxygenation and degassing. The systems, said McCormick, are also equipped with an alarm should any of thelife-support systems fail. Determining breeding will be just the start, however. To find and collect just200 white abalone to launch ...

U-M scientist discover how viruses hide inside human cells

...her to make chromatin fibers, which are folded and packed to form chromosomes. "The results suggest a biochemical mechanism which binds elements of viral DNA to host chromosomes through the interaction of LANA, histone H1 and possibly other chromosomal proteins," Robertson said. Robertson has evidence for a...

Carilion, Virginia Tech, U.Va. create biomedical institute -- Virginia Tech forms optical sciences and engineering research center

...erpreting light and thermal energy waves as images packed with information, such astype of vegetation or crop, mineral resources, pollution, etc. In essence, a spectrareading is taken for each pixel in the image and then compared with spectra of physicalitems of interest, thereby allowing their identificati...

Chromosome centers defined and sequenced for model plant

... The DNA near the centromeres is highly condensed, packed and coiled so tightly that it can thwart many types of anaysis. The techniques that allowed genetic and physical mapping of the centromeres in yeast required researchers to analyze the genetic contents of "tetrads" -- clusters of four reproductive ce...

New technique shows scalability of DNA computing

...nal computing, with ever more and smaller features packed onto the silicon chips that power it, is approaching the limits of miniaturization. DNA computing, says Smith, is one potential way around that barrier. But current DNA computing technology, Smith emphasized, is still far from overtaking the silicon...

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