Science and Technology
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We're all fairly smart people here, right? So can we agree to stop misusing words which we really ought to know do not mean what we are using them to mean? APOCALYPSE does not mean "End of the World".
There's no question, drugs work in treating disease. But can they work better, and safer? In recent years, researchers have grappled with the challenge of administering therapeutics in a way that boosts their effectiveness by targeting specific cells in the body while minimizing their potential damage to healthy tissue. The development of new methods that use engineered nanomaterials to transport drugs and release them directly into cells holds great potential in this area. And while several such drug-delivery systems — including some that use dendrimers, liposomes or polyethylene glycol — have won approval for clinical use, they have been hampered by size limitations and ineffectiveness in accurately targeting tissues.
The RSA: meeting 21st century challenges by showcasing ideas, undertaking innovative research and building civic capacity around the world. To learn more about the RSA, visit: thersa.org Our events are made possible with the support of our Fellowship.
In today’s hectic and noisy world, we are all searching for a little peace and quiet. Well, you might not be able to slip off to a tranquil forest for an hour or two, but you can block out background noise with the Noise-Canceling Headphones. The theory behind this project is that by picking up ambient sound with a microphone and reproducing it out of phase, we can actively cancel or "null" out background noise.
9 September 2011 Last updated at 10:57 ET Sentiment mining showed a sharp change in tone around Egypt ahead of President Mubarak's ousting Feeding a supercomputer with news stories could help predict major world events, according to US research. A study, based on millions of articles, charted deteriorating national sentiment ahead of the recent revolutions in Libya and Egypt. While the analysis was carried out retrospectively, scientists say the same processes could be used to anticipate upcoming conflict. The system also picked up early clues about Osama Bin Laden's location.
A team of Kentucky scientists has found a way to 'tweak' an inexpensive semiconductor to generate hydrogen from water using sunlight. Through theoretical computations, they've demonstrated that an alloy formed by a two percent substitution of antimony in gallium nitride has the right electrical properties to enable solar light energy to split water molecules into hydrogen and oxygen, a process known as photoelectrochemical (PEC) water splitting. When the alloy is immersed in water and exposed to sunlight, the chemical bond between the hydrogen and oxygen molecules in water is broken, allowing the hydrogen to be collected. "Previous research on PEC has focused on complex materials. We decided to go against the conventional wisdom and start with some easy-to-produce materials, even if they lacked the right arrangement of electrons to meet PEC criteria," says Professor Madhu Menon of the University of Kentucky.
While science fair projects still typically consist of papier mache volcanoes, LEGO robots, and crystals grown in a jar, many students these days are going above and beyond the staples, taking on projects that would even be awe-inspiring as a college thesis. From exploring the effectiveness of cancer treatments to revolutionizing the disposal of plastics, these students prove you don't have to be an adult to have amazing, world-changing ideas about science. Take a look at these 20 amazing science fair projects we've listed here.
By Peter Tyson Posted 11.01.08 NOVA Despite a fragmentary fossil record, paleoanthropologists have assembled a solid general picture of human evolution. They have traced hominins–that is, species that are bipedal and that are more closely related to humans than to other apes–back more than six million years.
Retired Site The Wired Science site has been retired from pbs.org and is no longer available. To find similar science and technology content on pbs.org, explore our Technology and Science & Nature topics areas. Or, try our keyword search or browse the Programs A-Z menu. Educators can find science-related, digital resources — videos, interactives, audio and photos — and in-depth lesson plans for the classroom at PBS Learning Media . Fans of the series can also visit the Wired magazine site at http://www.wired.com/ .
The Massachusetts institute of technology have been experimenting with their computers’ AI. Specifically the way they deal with the meaning of words. You might think that the best way to analyse this kind of thing would be with a human to PC conversation, like in Short Circuit. That’s not the case.
undefined John Kierein The Big Bang theory of the universe is wrong because the cosmological red shift is due to the Compton effect rather than the Doppler effect. See The Endless, Boundless, Stable Universe by Grote Reber and Hubble's Constant in Terms of the Compton Effect by John Kierein. The latter describes how the Compton effect cosmological red shift accelerates with increasing distance. Reber showed that the Compton effect was the cause of the red shift in order to explain the observations of bright, very long wavelength, extragalactic radio waves.
UC Berkeley Press Release New technique captures chemical reactions in a single living cell for the first time By Sarah Yang, Media Relations | 19 November 2007 BERKELEY – Bioengineers at the University of California, Berkeley, have discovered a technique that for the first time enables the detection of biomolecules' dynamic reactions in a single living cell. By taking advantage of the signature frequency by which organic and inorganic molecules absorb light, the team of researchers, led by Luke Lee, professor of bioengineering and director of UC Berkeley's Biomolecular Nanotechnology Center, can determine in real time whether specific enzymes are activated or particular genes are expressed, all with unprecedented resolution within a single living cell. The technique, described in the Nov. 18 issue of the journal Nature Methods , could lead to a new era in molecular imaging with implications for cell-based drug discovery and biomedical diagnostics.
Next: Introduction: So what's a An Introduction to Dynamical Systems and Chaos Marc Spiegelman, LDEO September 22, 1997 This tutorial will develop the basic ingredients necessary for modeling and understanding simple (and not so simple) non-linear dynamical systems. The goal of these exercises are to demonstrate you that you can develop significant insight into the behavior of complicated non-linear systems with just a little math, a little art and a little modeling software.
Outright Supurb. I'm actually working on a nano application for a new product. Carbon Nano's come in different shapes. One shape when added to plasic will make it higher in electrical conductivity. Another shape will make it as strong as steel. New applications on how to harnnes this new found tehnology have'nt even begun to surface.