News tagged with oxidizing agent

Study finds evidence nanoparticles may increase plant DNA damage

(Phys.org) -- Researchers at the National Institute of Standards and Technology (NIST) and the University of Massachusetts Amherst (UMass) have provided the first evidence that engineered nanoparticles are ...

Nanotechnology / Bio & Medicine

created Apr 18, 2012 | popularity 4.4 / 5 (7) | comments 1 | with audio podcast

Overcoming cancer drug resistance with nanoparticles

One of the ways in which cancer cells evade anticancer therapy is by producing a protein that pumps drugs out of the cell before these compounds can exert their cell-killing effects. A research team at Northwestern University ...

Nanotechnology / Bio & Medicine

created Jan 20, 2012 | popularity 5 / 5 (2) | comments 0 | with audio podcast

Engineers develop more effective MRI contrast agent for cancer detection

Many imaging technologies and their contrast agents — chemicals used during scans to help detect tumors and other problems — involve exposure to radiation or heavy metals, which present potential health risks to ...

Nanotechnology / Bio & Medicine

created Dec 23, 2011 | popularity 4.3 / 5 (4) | comments 1 | with audio podcast

Manipulating nanoparticles' surface chemistry holds medical promise

(PhysOrg.com) -- Swapping the chemical groups that originally coat iron oxide nanoparticles and making the particles soluble in biological solvents shows great promise for medical applications, such as drug delivery and contrast ...

Nanotechnology / Bio & Medicine

created Aug 17, 2011 | popularity 4.5 / 5 (2) | comments 0 | with audio podcast

Environmentally friendly rockets

(PhysOrg.com) -- Many rockets, satellites, and spacecraft are driven by hydrazine, sometimes with an oxidizing agent like nitric acid or dinitrogen tetroxide. When filling tanks with these highly toxic substances, ...

Chemistry / Materials Science

created May 27, 2011 | popularity 5 / 5 (3) | comments 1 | with audio podcast

New 'nanobead' approach could revolutionize sensor technology

Researchers at Oregon State University have found a way to use magnetic "nanobeads" to help detect chemical and biological agents, with possible applications in everything from bioterrorism to medical diagnostics, ...

Nanotechnology / Nanophysics

created Apr 26, 2011 | popularity 5 / 5 (3) | comments 2 | with audio podcast

Understanding nitric oxide toxicity

(PhysOrg.com) -- Researchers at MIT, the Japan Synchrotron Radiation Research Institute (JASRI), and the University of California at Davis have succeeded in characterizing the dinitrosyl iron complexes (DNICs) ...

Chemistry / Biochemistry

created Dec 07, 2010 | popularity 5 / 5 (1) | comments 0 | with audio podcast

MRI contrast agents change stem cell proliferation

When researchers tested three different labeling agents on three different stem cell populations to determine what effect the labeling agents had on stem cell phenotype, biological behavior and migration abilities, they found ...

Biology / Cell & Microbiology

created Nov 01, 2010 | popularity not rated yet | comments 0

Ozone detection

Researchers in Freiburg, Germany, have developed a highly-sensitive, miniaturized mobile ozone sensor which can be used not only in air, but also in water and in the vicinity of explosive gases.

Technology / Engineering

created Jan 18, 2010 | popularity 5 / 5 (1) | comments 0

Oxygen in place of chlorine: Towards a more environmentally friendly propylene oxide synthesis

(PhysOrg.com) -- Propylene oxide is an important bulk chemical that is used primarily in the production of polyurethane plastics. Currently, propylene oxide is usually made from propylene (propene) in a process that uses ...

Nanotechnology / Nanomaterials

created Oct 01, 2009 | popularity 4.8 / 5 (4) | comments 0