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Particle in Biological News

Commercial ships spew half as much particulate pollution as world's cars

... of maritime shipping's total contribution to air particle pollution based on direct measurements of ... make up just under half of shipping's total particle emissions, according to the new study. The other ... burning low-sulfur fuels is that, although total particle emissions diminish, the time that particles spend ...

Indoor air pollution increases asthma symptoms

... Agency (EPA) regulates outdoor levels of fine particle pollution, but does not have a standard for coarse particle pollution. There are no regulations for indoor ... meter of air (ug/m3) increase in indoor coarse particle concentration, there was a 6 percent increase in ...

Nanoparticle toxicity doesn't get wacky at the smallest sizes

... surface area as a measure of dose, rather than particle mass or number of particles, and observing how ... due to the inherent nature of the material or the particle size under scrutiny. "Different dose metrics ... off. They found that when calculating doses by particle number or mass, the amount needed to generate a ...

National and international doctoral training

... Training Group "Mass, Spectrum, Symmetry: particle Physics in the Era of the Large Hadron Collider," ... in the various research fields of elementary particle physics and to clearly point out the ... a bridge between astroparticle physics and particle physics in accelerators. (Host universities: ...

2 Alexander von Humboldt professorships go to LMU Munich

... fields of systems biology and cosmological particle research to an internationally competitive ... the call to a chair in theoretical elementary particle physics at the Arnold-Sommerfeld Center for ... in the field of string theory, elementary particle physics in theory and experiment, especially at ...

CU-Boulder study suggests air quality regulations miss key pollutants

... target a large source of fine, organic particle pollutants that contribute to hazy skies and poor ... processes. Instead, 75 percent of fine, organic particle pollutants form when reactive gases called VOCs, ... still unknown sources to effectively reduce fine particle concentrations," said Docherty. He and his ...

UC Santa Barbara has key role in Large Hadron Collider project

... of the LHC marked a milestone for the UCSB particle physics program. The group has played a key role ... effort in building the LHC, the world's largest particle accelerator. "This is frontier science on a ... in the CMS experiment was to build part of the particle tracking system, which measures the paths of ...

A gentle touch for better control, a quantum mechanical con, and milestone PRL papers

... The particle Whisperers G. Volpe, S. Perrone, J. M. Rubi, ... imagining two people betting on the location of a particle hidden among a set of boxes. In the game, a ... two boxes sitting on a table to see if there is a particle inside. He then closes the box and Alice guesses ...

Findings a step toward making new optical materials

... The engineers were able to precisely control the particle density, or how many particles occupy a given ... Teflon bars like bookends on either end of the particle layer formed on the water surface to compress the ... to create the precisely controlled pattern of particle spacing, a "non-close-packed" first layer, which ...

LDL particle measurement by NMR recognized by ADA, ACC

... today that states the measurement of LDL particle number by nuclear magnetic resonance (NMR) is one ... that often cluster together. ApoB and LDL particle concentration appear to be more closely ... to the consensus statement, ApoB and LDL particle number by NMR appear to be more discriminating ...

Chemical engineers discover new way to control particle motion

... applications. The researchers learned that particle motion is strongly linked to how the particles arrange themselves in a channel. particle arrangements are determined by the interactions ... the formation of the layers necessary for faster particle transport. If layering leads to ...

The top 5 ways medical physics has changed health care

... X rays, nuclear magnetic resonance, ultrasound, particle accelerators and radioisotope tagging and ... medicine. A few highlights include: 1) USING particle ACCELERATORS TO DEFEAT CANCER In the last 50 ... spearheaded the development and application of particle accelerators for cancer treatment. Once confined ...

Particle accelerator may reveal shape of alternate dimensions

... MADISON - When the world's most powerful particle accelerator starts up later this year, exotic new ... way the string vibrates determines the pattern of particle masses and the forces that we feel," says the ... evidence could appear in data from a new particle accelerator, the Large Hadron Collider, scheduled ...

First-ever study to link increased mortality specifically to carbon dioxide emissions

... worldwide. It incorporates principles of gas and particle emissions and transport, gas chemistry, particle production and evolution, ocean processes, soil ... occur when all current human and natural gas and particle emissions were considered versus considering all ...

UC's NIH grant brings technology from outer space to playgrounds

... lack of knowledge of individuals' exposures to particle size and accumulation. Current sensors with the ... gravity is the size of the individual, as air particle densities vary with distance from the ground. "There's a distinct particle difference by height," Son notes. During the ...

AGU journal highlights -- March 25, 2009

... humidity rises because the acid-coated soot absorbs water. An increase in particle mass is often accompanied by a decrease in size, suggesting that conventional measurement methods based on particle size may underestimate the impact of soot aging on clouds. Because ...

Scripps scientists create first crystal structure of an intermediate particle in virus assembly

... "painful" years trying to produce a crystal structure of the intermediate particle they knew was assembled first. They had produced images using electron ... these tails, which are scaffolding proteins, guided assembly of the particle "but we think they actually change the structure," Johnson says. "That ...

Particulate emission from natural gas burning home appliances

... and Riello SpA, Burner Division, used advanced optical diagnostic tools, particle collection methods, and particle size assessment to identify particulate matter with diameters in the range ...

No quick or easy technological fix for climate change, researchers say

... for hundreds of years." The basic idea behind stratospheric particle injections is that the Earth's temperature depends on the reflectivity of ... at all. We now know that the properties and effects of a geoengineered particle layer in the stratosphere would be far more unpredictable, for example, ...

'Strained' quantum dots show new optical properties

... of the semiconductors making up the inner core and outside shell of the particle creates strain: the core is squeezed and the shell is stretched. This ... strain is another key factor that must be considered, in addition to particle size and composition." ...

Animal and biological science highlights: San Antonio Fluid Dynamics Conference, Nov. 23-25

... flowed through the water as a result of the wing movements. From these particle trajectories, the scientists could determine the forces produced by the ... Polytechnic University in New York, and his colleagues used Digital particle Image Velocimetry (DPIV). In the technique, the fluid flow within a ...

American Chemical Society's Weekly PressPac -- Sept. 24, 2008

... regulations may not effectively target a large source of fine, organic particle pollutants that contribute to hazy skies and poor air quality over Los ... or industrial processes, unlike previously thought 75 percent of organic particle pollutants form when reactive, organic gases undergo chemical ...

September Geology and GSA Today media highlights

... on our clothes. Each one of us is never more than a few feet from a dust particle from space. Despite their abundance, however, it is difficult to know ... to produce sulfur-rich magmatic-hydrothermal mineral deposits. particle size separation and evidence for pedogenesis in samples from the Chinese ...

American Chemical Society's Weekly PressPac -- Aug. 13, 2008

... free radicals (PFRs) form on airborne nanoparticles and other fine particle residues as gases cool in smokestacks, automotive exhaust pipes and ... die each year from cardiopulmonary disease linked to breathing fine particle air pollution, he says. However, Dellinger stresses additional research is ...

Nanojewels made easy

... at NCSU have shown how colloid chemistry methods originally used to form particle aggregates from nanoparticles can be used to quickly make particles with ... with nanoparticles", Marquez says. "By understanding how different particle sizes determine the colors produced, these nanojewels can be designed for ...

NIST trumps the clumps: Making biologic drugs safer

... NIST scientists favor ES-DMA for its ability to quickly resolve particle sizes differing by as little as 0.2 nanometers, to provide a direct measure of particle size distributions, and to accept bioreactor samples with significantly ...

Visual technology enables brain to learn in new ways

... gives us, a capacity to create a richer immersion experience." From particle Physics to the "Lord of the Rings" Similar benefits could be gained by ... of data from organizations like Switzerland's CERN, the world's largest particle physics laboratory. Tufts' VisWall will enable him to visualize on a ...

Carnegie Mellon researchers create invisibiity cloak

... of polymer composites. In a sense, light can flow freely through the particle by putting grease onto its surface, said Matyjaszewski, the J.C. Warner ... in the Department of Chemistry. The new particle invisibility cloak will help create a vast array of new material ...

MIT: Remote-control nanoparticles deliver drugs directly into tumors

... by the nanoparticles breaks these, leaving one strand attached to the particle and allowing the other to float away with its cargo. One advantage of ... to break. This heat-sensitive tuneability makes it possible for a single particle to simultaneously carry many different types of cargo, each of which can ...

Economical, nonpolluting solutions to greenhouse growing found

... conducted trials of four grades of pumice to determine the most effective particle size for growing ornamental plants and vegetables in soilless conditions. ... systemspots or bags. To assess the growth and yield of each treatment, particle size and moisture retention were also determined. The trials clearly ...

Chang'e-1 -- new mission to Moon lifts off

... a gamma-ray/X-ray spectrometer, a microwave radiometer, a high-energy particle detector, and a solar wind particle detector. Named after the Chinese goddess of the Moon, Change-1 ...

American Chemical Society's Weekly PressPac -- Sept. 26, 2007

... oil appears to be an important yet little-recognized source of toxic particle emissions from motor vehicles even those fueled by clean-burning ... instead of diesel fuel, allowing the researchers to focus solely on particle emissions from lubrication oil. They found that the hydrogen-powered ...

Obama administration announces more than $327 million in Recovery Act funding for science research

... allocated as follows: Fermi National Accelerator Laboratory; Batavia, IL$60.2 million, including $52.7 million for research on next-generation particle accelerator technologies; and $7.5 for neutrino research in collaboration with Brookhaven National Laboratory. Lawrence Berkeley National ...

Jet-propelled imaging for an ultrafast light source

... that the proteins or viruses dissolved in the liquid can only fit into the droplets one at a time. And the nozzle won't clog, because even a particle bigger than the sample protein or virus bigger than the stream of liquid itself can still fly through the glass nozzle without hitting the walls ...

All-in-1 nanoparticle: A Swiss Army knife for nanomedicine

... factoring in roughness the thinnest coating you can build is 5-6 nanometers. Gold ions are much, much smaller." The total diameter of the combined particle is roughly 15-20 nanometers, small enough to be able to slip into a cell. Incorporating gold provides a well-established binding site to attach ...

Nanodiamonds deliver insulin for wound healing

... (Ho is a member of the Robert H. Lurie Comprehensive Cancer Center of Northwestern University.) In addition to using the nanodiamonds in their particle form, Ho's group has developed devices that harness the slow drug-release capabilities of the nanodiamonds. More recently, his team has shown that ...

New way to make sensors that detect toxic chemicals

... chemical molecules from the air -- and very pure particles -- which enable the sensor to detect even very small quantities of a substance. Each particle of nickel oxide measures only about 50 atoms across -- that's equivalent to five nanometers (billionths of a meter). Beach described the synthesis ...

NSF provides $3.4 million to study climatically important Agulhas Current

... no moving parts, measuring velocity using the principle of Doppler shift, whereby the frequency of a sound wave changes as it reflects off a moving particle in the ocean. Offshore recirculations and meandering events will be captured using the C-PIES, which can give information about the transport over ...

Tips from the journals of the American Society for Microbiology

... pursuing vaccine strategies that can induce cross-reactive immunity against multiple strains of influenza viruses. In prior research virus-like particle (VLP) vaccines have proven to be a promising new technology at preventing diseases in humans. VLPs resemble their live-virus counterparts and are ...

Shape matters in the case of cobalt nanoparticles

... and have potential applications in information storage, energy and medicine. One striking difference is the behavior of the two different particle types when external magnetic fields are applied and then removed. In the absence of a magnetic field, both the spherical and cubic nanoparticles ...
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