Tag: "metallic" at biology news

MIT researchers probe bones' tiny building blocks

...called nanocomposites are composed of a polymer or metallic matrix filled with nanoscale particles randomly distributed or periodically spaced. "There may be ways to disperse particles non-uniformly that may lead to improved material toughness," Suresh said. Ortiz' and Suresh's colleagues on the work are K...

Oregon researchers involved in new Clovis-age impact theory

...uman population." The carbon-rich layer contains metallic microspherules, iridium, carbon spherules, fullerenes, charcoal and soot. Some of those ingredients were found worldwide in soils dating to the K-T Boundary of 65 million years ago. The K-T layer marks the end of the Cretaceous Period and the begin...

Nanocomposite labeled cancer cells can be targeted and destroyed using lasers

...pen in nature. By combining an organic matrix with metallic clusters that can absorb light, it is possible to incorporate such particles into cells and then destroy those targeted cells with a laser. In a presentation at the NSTI Nanotech 2007 Conference, researchers describe work conducted at the NanoBiotech...

2007 Joint Assembly in Acapulco -- press conference schedule

...alifornia to Belgium reveal materials that include metallic microspherules, carbon spherules, nanodiamonds, fullerenes, charcoal, and soot. The layer's composition may indicate that a massive body, possibly a comet, exploded in the atmosphere over the Laurentide Ice Sheet 12,900 years ago. The timing coincide...

Invisible for electrons

...ight colour change. They then overlaid this with a metallic scaffold made from very fine gold wires having gaps between the wires 100 times smaller than the diameter of a strand of hair. In the next step, the researchers dissolved the silicon substratum in various acids. This permitted the graphene to hang fr...

Ingredient in Big Macs and sodas can stabilize

...r utility for the generation of a wide spectrum of metallic nanoparticles, including gold and silver; and as amphiphilic building blocks in a variety of drug designs were demonstrated by Katti, in collaboration with Kannan and MU's Stan Casteel. ...

ACS News Service Weekly PressPac -- February 14, 2007

...shing of scrap PCBs, followed by separation of the metallic and non-metallic materials with an electric field. The technique has advantages over other methods proposed for recycling PCBs, the researchers indicate. ARTICLE #4 FOR IMMEDIATE RELEASE "Recycle Technology for Recovering Resources and Products fro...

EO Lawrence Award goes to 8 scientists and engineers

...mplexes which are perfect precursors for preparing metallic nanofoams. She also designs and synthesizes a unique class of organic polyazido compounds containing no carbon-carbon bonds that transcend the carbon-carbon paradigm. These organic compounds are the ideal feedstocks for carbon-based and carbon-nitr...

Researchers to present advances in energy, health, technology at chemical engineering conference

...urfaces. Madix will describe how studies on single metallic crystals have yielded a vast understanding of the movement and interaction of chemicals during a variety of reactions. ''Professor Madix's work has paved the way for the discovery of high-performance catalysts and has opened new vistas as to how on...

Story tips from the Department of Energy's Oak Ridge National Laboratory, October 2006

...ogen can cause cracks, leaks and other failures in metallic piping. The ORNL team led by Tim Armstrong has fou...ial significantly reduces embrittlement created in metallic materials. Polymer material also reduces the number of welds and joints, where failures tend to occu...

A ruler of gold and DNA

... is the collection of electrons that resonate in a metallic particle, in this case the gold-DNA conjugate. Plasmon resonance changes as a particle changes, leading to differences in scattering wavelength. For example, if the gold particle's spidery DNA strands, which are 54 base pairs long, are shortened for ...

Gold nanoparticles prove to be hot stuff

...eter-wide gold beads, as expected because of their metallic nature, can be trapped and detected six times more easily than polystyrene particles of a similar size. However, the scientists also found that gold absorbs light and heats up quickly, by a remarkable 266 degrees (Celsius) per watt of laser power, ...

Study supports 'urgent' need for worldwide ban on lead-based paint

...nd traditional medications, ceramic dinnerware and metallic toys and trinkets. In a two-year study headed by Scott Clark, PhD, the UC-led research team found that more than 75 percent of the consumer paint tested from countries without controls--including India, Malaysia and China--had levels exceeding U.S...

Cellular scale drug delivery from the inside out

...ndrimers, biodegradable polymers, genes, proteins, metallic nanoparticles, or semiconductor nanocrystals also known as quantum dots and are held in place by chemical bonds. Once the nanospheres are inside the target cells, a trigger is used to pop the caps off and release the drug. "We're looking at two lev...

How sweet it isn't -- preference for alternatives to sugar based on sour, bitter tastes

...ncluding sugar, based on how much bitter, sour and metallic tastes they perceived with each substance. Many of...e 30 panelists to rate the sweet, bitter, sour and metallic tastes that accompanied the 13 sweeteners and sweet substances. Each participant rinsed his or her m...

Rice University researchers create 'nanorice'

...made of a non-conducting core that is covered by a metallic shell. Halas' investigations find that nanorice possesses far greater structural tunability than nanoshells and another commonly studied optical nanoparticle, the nanorod. In fact, tests indicate that nanorice is the most sensitive surface plasmon re...

U of M researchers unlock mystery of layer encircling the Earth's core

...mically distinct regions, the rocky mantle and the metallic core. The article, "MgSiO3 post-perovskite at D'' conditions," was published on Jan. 17 in Proceedings of the National Academy of Science ( www.pnas.org/content/vol103/issue3/#GEOPHYSICS ).The research "tells us how to better model Earth's internal ...

Bare metal stents deliver gene therapy to heart vessels with less inflammation in animal studies

...l uses in other areas of medicine that make use of metallic implants. Cardiologists frequently treat heart disease patients now by using stents to expand partially blocked blood vessels and improve blood flow. However, new obstructions may gradually form within the stents themselves and dangerously narrow the...

Study in Royal Society journal on link between creativity and mating success

...tions may be of importance in the design of better metallic and polymer prostheses, eg. for hip replacement. In these examples a cell, perhaps 1/1000 cm long senses detail around it 100 to 300 times smaller. We have investigated this reaction. We find that the cell adopts the shape of the substratum so that t...

Spectacular new discoveries arising from deep ocean hot springs

...ped by a forest of black smoker vents and built of metallic minerals on the Mid-Atlantic Ridge. It turned out ...d, make the oceans habitable for life, concentrate metallic mineral deposits, and modulate the Earth's temperature as a water-cooled planet."...

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(Date:10/17/2014)... . To date, ... overdoses, doctors are often limited to supportive therapy such as ... combination of drugs involved. So what can be done if ... ETH professor Jean-Christophe Leroux from the Institute of Pharmaceutical Sciences ... question. "The task was to develop an agent that could ...
(Date:10/16/2014)... efficiently, they are anything but sustainable: environmental damage ... is becoming increasingly evident. Despite their disadvantages, however, ... regarded as the sole possibility of achieving higher ... Bernhard Schmid, an ecology professor at the University ... agriculture and forestry. After all, a new study ...
(Date:10/15/2014)... As our ability to assess the pandemic risk from ... developments, we must not allow ourselves to become complacent ... an international consortium of scientists. , Influenza pandemics arise ... have yet to develop widespread immunity – spreads in ... in the past 100 years, the worst of which ...
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