A computer model of tuberculosis has shown that approved treatments prescribing antibiotic doses once or twice a week are more likely to lead to drug resistant strains than are daily antibiotic regimens. The finding, from a Univ. of Michigan study, could help inform the treatment of the roughly 10 million people worldwide who fall ill with tuberculosis each year.
Rice Univ. scientists using an efficient metal-free process have synthesized dozens of small-molecule catalysts, tools that promise to speed the making of novel chemicals, including drugs. The lab of synthetic chemist László Kürti made elusive chiral biaryl compounds in a single-flask process that does not require the use of transition metals.
The most widely used technology for producing x-rays has remained essentially the same for more than a century. But based on a new analysis by researchers at Massachusetts Institute of Technology, that might potentially change in the next few years.
Supercomputing simulations at Oak Ridge National Laboratory could change how researchers understand the internal motions of proteins that play functional, structural and regulatory roles in all living organisms.
Researchers at Duke and Stanford Univs. have devised a way to watch the details of neurons at work, pretty much in real time. Every second of every day, the 100 billion neurons in your brain are capable of firing off a burst of electricity called an action potential up to 100 times per second.
What's true for double-blade razors is also true for solar cells: two work steps are more thorough than one. Stacking two solar cells one on top of the other, where top cell is semi-transparent, which efficiently converts large energy photons into electricity, while the bottom cell converts the remaining or transmitted low energy photons in an optimum manner. This allows a larger portion of the light energy to be converted to electricity.
Miniaturization is the magic word when it comes to nanomagnetic devices intended for use in new types of electronic components. Scientists have proposed the use of ion beams for their fabrication. An ultra-fine beam consisting of around 10 neon ions suffices to bring several hundred atoms of an iron-aluminum alloy into disarray and thereby generate a nanomagnet embedded directly in the material.
A new system that uses a wireless implant has been shown to record for the first time how brain tissue deforms when subjected to the kind of shock that causes blast-induced trauma commonly seen in combat veterans.
The grizzled asteroid miner is a stock character in science fiction. Now, a couple of recent events, one legal and the other technological, have brought asteroid mining a step closer to reality.
Engineers at the Univ. of California, San Diego developed a new technology that uses an oscillating electric field to easily and quickly isolate drug delivery nanoparticles from blood. The technology could serve as a general tool to separate and recover nanoparticles from other complex fluids for medical, environmental and industrial applications.
Massachusetts Institute of Technology researchers have developed a biomedical imaging system that could ultimately replace a $100,000 piece of a lab equipment with components that cost just hundreds of dollars. The system uses a technique called fluorescence lifetime imaging, which has applications in DNA sequencing and cancer diagnosis, among other things.
Superconductors are marvelous materials that are able to transport electric current and energy without dissipation. For this reason, they are extremely useful for constructing magnets that can generate enormous magnetic fields without melting. They have found important applications as essential components of the Large Hadron Collider particle accelerator at CERN and the magnetic resonance imaging tool widely used for medical purposes.
Wintry weather means hats and scarves for some mammals, and hibernation for others. Hibernation dramatically lowers body temperatures, heart rates and oxygen consumption. A team reports a study of the proteins and genes that allow squirrels' hearts to stay healthy during the winter. A better understanding of this phenomenon could help researchers develop better treatments for people with cardiac disease.
An international team of physicists has published the first calculation of direct "CP" symmetry violation: how the behavior of subatomic particles (in this case, the decay of kaons) differs when matter is swapped out for antimatter. Should the prediction represented by this calculation not match experimental results, it would be conclusive evidence of new, unknown phenomena that lie outside of the Standard Model.
Our sun is a relatively quiet star that only occasionally releases solar flares or blasts of energetic particles that threaten satellites and power grids. You might think that smaller, cooler stars would be even more sedate. However, astronomers have now identified a tiny star with a monstrous temper. It shows evidence of much stronger flares than anything our sun produces.