People find the smell of blood unpleasant, but for predatory animals it means food. When behavioral researchers wanted to find out which substances of blood trigger behavioral reactions, they got some unexpected results. The study found that, for the animals, one particular component of blood odor was just as engaging as the blood odor itself.
By swabbing oil from a gland located at the end of a seabird’s tail and analyzing the sample with gas chromatography-mass spectrometry, researchers have developed a way to measure wildlife’s exposure to plastics.
A groundbreaking discovery of self-doping in YBCO, a well-known superconductor, challenges the traditional understanding of the mechanism of superconductivity in copper-based high temperature superconductors, which assumes a constant doping level in the copper oxide planes.
Researchers have shed light on the unusual properties of electrons responsible for the exotic conduction states on the surface of a class of materials known as topological insulators. The imaging technique promises a more complete understanding of such systems and could aid the development of novel spintronic devices.
For scientists probing the electronic structure of materials using a resonant inelastic soft X-ray scattering (RIXS), a persistent question has been how to account for "split peak" spectra seen in some hydrogen-bonded materials. Now, a team of researchers has performed an investigation of several types of liquid alcohols with RIXS and brought new perspective to this long-lasting debate.
Future fleets of electric vehicles will require high-capacity batteries that recharge rapidly, degrade slowly and operate safely. Lithium-ion batteries currently lead the charge, but not without significant problems. To probe molecular structures and track the rapid chemical reactions in more promising magnesium batteries, researchers from Toyota have turned to Brookhaven National Laboratory for help.
Researchers have succeeded in simultaneously observing the reorganizations of atomic positions and electron distribution during the transformation of the “smart material” vanadium dioxide from a semiconductor into a metal– in a time frame a trillion times faster than the blink of an eye.
A Univ. of Texas at Arlington researcher has received a grant to build a handheld device that could analyze a person’s breath to reveal whether certain dangerous gases are present that need more immediate medical attention. The nanoscale gas chromatography tool can separate vapors from a person’s breath, a room or an area, then detects what harmful vapors are present.
Most of what we taste we actually smell. The only sensations that we pick up in our mouth are sweet, sour, bitter, umami and salty. Without its smell, coffee would have only a sour or bitter taste, because of the organic acids. Try it with your next cup of coffee– hold your nose as you take your first sip.
Researchers are decoding the structure of the large ribosomal subunit of the mitochondria at an atomic level, thereby providing insight into the molecular architecture of this ribosome with implications for a better understanding of the mode of action of antibiotics.
A new technique makes it possible to quickly detect the presence of drugs or monitor certain medical conditions using only a single drop of blood or urine, representing a potential tool for clinicians and law enforcement.
When researchers invented the field of biological accelerator mass spectrometry in the late 1980s, the process of preparing the samples was time-consuming and cumbersome. Now, with the aid of a new sample preparation method that accommodates liquid samples and bypasses the graphitization process, scientists can prepare and analyze samples in minutes– instead of days.
A new method allows chemists to measure how fast a small molecule binds to and unbinds from a protein without modifying or labeling either molecule. Researchers could use the approach to rank potential drug candidates by their ability to form stable complexes with a target protein.
The FDA initiates class I drug recalls when products have the reasonable possibility of causing serious adverse health consequences or death. According to a new study, about two-thirds of FDA-recalled dietary supplements analyzed still contained banned drugs at least six months after being recalled.
As the UK forms a new crime unit designed to fight food fraud— in response to an uproar last year over horse meat being passed off as beef— scientists from Germany are reporting a technique for detecting meat adulteration.
An ultra-sensitive biosensor made from the wonder material graphene has been used to detect molecules that indicate an increased risk of developing cancer. The biosensor has been shown to be more than five times more sensitive than bioassay tests currently in use, and was able to provide results in a matter of minutes.
Researchers have succeeded in observing the "forbidden" infrared spectrum of a charged molecule for the first time. These weak spectra offer perspectives for extremely precise measurements of molecular properties and may also contribute to the development of molecular clocks and quantum technology.
A student who develops new analytical methods using liquid chromatography and gas phase chemistry in mass spectrometry to characterize a group of pharmaceuticals known to be highly heterogeneous has been awarded the 2014-15 Global Fellowship Award from the U.S. Pharmacopeial Convention.
Although in modern societies fermented beverages are associated with socializing, celebration and ritual, in ancient times they were also important sources of essential nutrients and potable water. In Mesoamerica, pulque— an alcoholic beverage produced from the fermented sap of several species of maguey plants— is hypothesized to have been used as a dietary supplement.
A new research platform uses a laser to measure the nanomechanical properties of tiny structures undergoing stress and heating, an approach likely to yield insights to improve designs for microelectronics and batteries.