Scientists at Rice University have developed a method to open gaps between the endothelial cells that line blood vessels using a magnetic field and iron oxide nanoparticles. The gaps close by themselves after the researchers remove the magnets. They hope that the concept could be used to help deliver larger therapeutic molecules like proteins to […]
Zircon grains from the Kiruna iron oxide–apatite (IOA) ore bodies in northern Sweden are distinct in their hafnium and oxygen isotopic ratios compared to zircon grains from adjacent metavolcanic host rocks and related intrusions. Here,...Show More Summary
Using a state-of-the-art microscopy technique, experimenters at the National Institute of Standards and Technology (NIST) and their colleagues have witnessed a slow-motion, atomic-scale transformation of rust—iron oxide—back to pure iron metal, in all of its chemical steps.
A new, specially coated iron oxide nanoparticle developed by a team at MIT and elsewhere could provide an alternative to conventional gadolinium-based contrast agents used for magnetic resonance imaging (MRI) procedures. In rare cases, the currently used gadolinium agents have been found to produce adverse effects in patients with impaired kidney function.
(Massachusetts Institute of Technology) A specially coated iron oxide nanoparticle could provide an alternative to conventional gadolinium-based contrast agents used for magnetic resonance imaging (MRI). In rare cases, the currently used gadolinium agents have been found to produce adverse effects in patients with impaired kidney function.
When oxygen interacts with some metals, it causes an oxidation reaction that results in what is known as a secondary mineral: iron oxide, or rust. Similarly, when oxygen interacts with uranium, an oxidation reaction occurs that, when mixed with other elements, can also create secondary minerals. Show More Summary
Iron(IV) hexahydrazide clathrochelate complexes synthesized in water by air oxidation
Iron oxide was mixed with rubber and molded into a 1/8" band that could be reused.
Ferumoxytol is an FDA-approved therapeutic for the treatment of anemia. It’s a solution of iron oxide nanoparticles roughly 17-31 nm in diameter and replenishes the body’s iron levels. Researchers from Stanford University have discovered...Show More Summary
Settling a decades-long debate, new research conclusively shows that a hierarchy of active species exists in gold on iron oxide catalysis designed for low temperature carbon monoxide oxidation; Nanoparticles, sub-nanometer clusters and dispersed atoms—as well as how the material is prepared—are all important for determining catalytic activity.
Multi stimuli-responsive nanocapsules selectively deliver drugs to exactly where they are needed, say researchers. The researchers created the multifunctional nanocapsules by wrapping magnetic iron oxide nanoparticles inside a biocompatible polymer coat that could be tuned to respond to acidity or temperature. Show More Summary
Dust to dust: Evidence for the formation of “primary” hematite dust in banded iron formations via oxidation of iron silicate nanoparticlesAuthors:Rasmussen et alAbstract:Conventional models for the deposition of banded iron formations...Show More Summary
Silver Iron Cup (detail), porcelain with a hare's fur combination glaze - two coats of John's SG-12, one coat Candace Black, and one coat of Hamada Rust, cone 10 oxidation.Oil spot and hare's fur glazes are beautiful and fascinating....Show More Summary
Lai'e Beach on the island of Oahu, with a coral beach sand stained by iron oxides Sand is white or gray. If you live in Florida or some other low-lying coastline, the sand tends to be nearly pure quartz, leading to the white color. In California and other mountainous coasts, there are other minerals mixed with the quartz, leading to a grayer shade. Show More Summary
Washington, DC-- Using laboratory techniques to mimic the conditions found deep inside the Earth, a team of Carnegie scientists led by Ho-Kwang "Dave" Mao has identified a form of iron oxide that they believe could explain seismic and geothermal signatures in the deep mantle. Show More Summary
Using ultrasound, drug particles can be directed to a specific area, including tumors, researchers report. They have created micro-sized gas bubbles coated with cancer drug particles and iron oxide nanoparticles, and then use magnets to direct these bubbles to gather around a specific tumor.
Scientists at Nanyang Technological University (NTU Singapore) have invented a new way to deliver cancer drugs deep into tumour cells. The NTU scientists create micro-sized gas bubbles coated with cancer drug particles and iron oxide...Show More Summary
New light has been shed on a curious group of bacteria that use iron in much the same way that animals use oxygen: to soak up electrons during biochemical reactions. When organisms -- whether bacteria or animal -- oxidize carbohydrates, electrons must go somewhere.
An international group of researchers including Russian scientists from the Moscow State University has been studying the behaviour of the recently-discovered Fe4O5, iron oxide. The group has succeeded in describing its complex structure, and proposed an explanation for its very unusual properties. Show More Summary
“A fundamental approach in astrobiology is to use terrestrial sites as analogs, where we look for insight into the possibilities on other worlds,” says Eric Roden, a professor of geoscience at University of Wisconsin–Madison. “Some people believe that use of...