Tag: "charges" at biology news
Recycling is not enough -- we need to consume less
...ies and regions where taxation and household waste charges
have been used to reduce landfill. However, even the toughest penalties have not been enough to prevent a significant accumulation of waste. Ben Shaw says that waste reduction needs to be tackled higher up the chain of production and consumption. ...
New NIST reference material for peptide analysis
... 14 and 26 amino acid residues in length, with net charges
of -3, -1 and +3. These three synthetic peptides were designed to provide long-term stability (do not contain methionine, cysteine and tryptophan), a range of purities, a range of molecular masses, protease cleavage sites, and contain tyrosine to ena...
Nanocomposite labeled cancer cells can be targeted and destroyed using lasers
...e made in discrete sizes, carry different electric charges
and can encapsulate different materials inside. This design offers researchers a wider choice of size, surface functionality and payload than traditional small in vivo devices where the agent is conjugated directly to the surface. A laser can be us...
From ink to optics, study of particle mixtures yields fundamental insights
...ct even when the particles have very high electric charges
-- was published as an "Editors' Selection" in the May 11 issue of the journal Physical Review Letters. "This is the closure of a long-standing, fundamental problem in statistical mechanics," said Panagiotopoulos, who credits Hynninen with the "ele...
New synthetic self-assembling macromolecules mimic nature
...ive, or can have alternating positive and negative charges
along the backbone. The rods self-assemble and the aggregated structures are remarkable stable in saline solution, Turner said. "The early results of this study suggest that these charged polymers self-assemble by like-charge interactions similar t...
New UA / private partnership appraises climate and environmental risks by address
.... We provide it with the click of a mouse." CASL charges
$30 for a premium environmental risk assessment for a particular address. The company's Web site also provides free educational material about climate change and a free report that focuses on shoreline reduction at a national level. The address-bas...
Tears reveal some of their deepest secrets to researchers
...to detect different components based on electrical charges
and mass. Nichols points out that researchers have used other techniques, such as chromatography, to characterize types of lipids in the tear film, but advances in mass spectrometry technology are improving research efforts. "Other scientists use...
Night of the living enzyme
...e to be ensnaredamine and carboxyl groups carrying charges
opposite that of three common, off-the-shelf biocatalysts: glucose oxidase (GOX), glucose isomerase (GI) and organophosphorus hydrolase (OPH). Picture an enzyme in solution, floating unfolded like a mop head suspended in a water bucket. When that e...
Microcapsules like it hot and salty
... bonds between the polymer molecules with opposite charges
are loosened and as a result, the capsule wall bec...when heated. However, there are so many equivalent charges
in the capsule wall that they repel each other. The whole structure expands considerably, the diamet...
Structure of enzyme offers treatment clues for diabetes, Alzheimer's
...t neatly within this chamber. Negative electrical charges
on their outer surfaces help to align them with the positive charges
on one inner surface of the chamber. Once they are in place, the enzyme slices them multiple times ...
New technique boosts size of proteins that can be analyzed
...re sprayed in an electric field where they pick up charges
and are vaporized as they pass through a heated capillary. Then they are hit by air molecules in low-energy collisions to keep the protein from folding up; then they are slammed with air molecules in high-energy collisions to dissociate the protein. ...
Real-time Plant Physiology: ASPB extends 'open access' benefit for members
...ant Physiology and The Plant Cell, discounted page charges
for papers published in both journals, discounted registration fees for ASPB meetings, and significant discounts on laboratory reagents and scientific literature from several major suppliers and publishers. Visit the Society website at www.aspb.org ...
Full-year results from Oxford Open show wide variation in open access uptake across disciplines
...mbers of a subscribing institution. Oxford Open charges
will remain the same for authors wishing to publish open access in 2007. Further reduced charges
are also available to authors in developing countries: see the Oxford Open website, and participatin...
Announcing the launch of Open Access Central
...kes it immediately available online with no access charges
or subscriptions. The publishers' website currently features articles from existing open access chemistry journals published with BioMed Central, including Geochemical Transactions and Beilstein Journal of Organic Chemistry. It also includes chemistr...
'Mercury sponge' technology goes from lab to market
...is could equate to significant savings in disposal charges
for users with mercury or other toxic metals in their facility waste streams, said Rick Skaggs, PNNL commercialization lead. According to Skaggs, SAMMS can be easily adapted to recover many toxic substances, including toxic metals such as lead, ch...
Biological motors sort molecules one by one on a chip
...they built a transport system that uses electrical charges
to direct the molecules individually. To demonstrate this, the Delft researchers sorted the individual molecules according to their color. Professor Hess of the University of Florida has called the Delft discovery "the first traffic control system in...
Nanogenerators may spark miniature machines
...low of liquids should be able to generate electric charges
in the wires--perfect for implantable medical devices, "smart" apparel and a variety of other applications....
First link of oral bacteria and preterm birth found in human
...fdimes.com/prematurity/15341_10734.asp ), hospital charges
for newborns without complications averaged $1,700...raged a startling $77,000. Also in 2003, hospital charges
for all infants totaled $36.7 billion. Nearly half of that, $18.1 billion, was for babies with a di...
New lipid molecule holds promise for gene therapy
...lained that the new lipid molecule has 16 positive charges
in its tree-shaped headgroup, the largest number by far in the field of gene delivery. The process of delivering a gene of interest into the cell is known as "transfection." In the paper, the authors describe transfection efficiency studies carried o...
DNA-wrapped carbon nanotubes serve as sensors in living cells
...th a certain shape that is defined by the negative charges
along its backbone. When the DNA is exposed to ion...uch as calcium, mercury and sodium -- the negative charges
become neutralized and the DNA changes shape in a similar manner to its natural shape-shift from the...