Research has demonstrated a new, non-invasive test that can detect cocaine use through a simple fingerprint. For the first time, this new fingerprint method can determine whether cocaine has been ingested, rather than just touched.
In recent years, scientists have learned how to study ultrafast processes taking place at the atomic and molecular levels, and research in this field is expected to yield some very important results. The recombination of electron shells in molecules, taking just a few dozen attoseconds, can now be viewed “live,” thanks to a new method.
Astronomers have discovered the first quadruple quasar: four rare active black holes situated in close proximity to one another. Because the discovery comes with one-in-ten-million odds, perhaps cosmologists need to rethink their models of quasar evolution and the formation of the most massive cosmic structures.
Raman spectroscopy is able to screen for carbonaceous material, a possible sign of life on mars, but it can’t determine its source. Researchers are calling for the use of gas chromatography/mass spectroscopy to supplement Raman spectroscopy and develop more conclusive evidence of ancient extraterrestrial life.
A new study has revealed a marine phosphorus cycle that is much more complex than previously thought. The work also highlights the important but previously hidden role that some microbial communities play in using and breaking down forms of this essential element.
More than a year into Colorado's experiment legalizing marijuana, labs testing the plants are able for the first time to take stock of the drug's potency and contaminants— and openly paint a picture of what's in today's weed.
A new type of technology that senses minute changes in the levels of particular compounds in exhaled breath accurately identifies high risk changes that herald the development of stomach cancer. The technology— known as nanoarray analysis— could be used not only to test for the presence of stomach cancer, but also to monitor those at high risk of subsequently developing the disease.
New research has investigated the ability of amino-functionalized multi-walled carbon nanotubes to cross the Blood-Brain Barrier (BBB) by two ways: in vitro— using a co-culture BBB model comprising primary porcine brain endothelial cells (PBEC) and primary rat astrocytes— and, in vivo— following a systemic administration of radiolabelled f-MWNTs.
Building on their creation of the first-ever mechanical device that can measure the mass of individual molecules, one at a time, a team of scientists have created nanodevices that can also reveal their shape. Such information is crucial when trying to identify large protein molecules or complex assemblies of protein molecules.
Physicists have developed a new tabletop particle detector that is able to identify single electrons in a radioactive gas. As the gas decays and gives off electrons, the detector uses a magnet to trap them in a magnetic bottle.
Over the past several decades, the progress in micro fabrication technology has revolutionized the world in such fields as computing, signal processing and automotive manufacturing. One researcher has developed a credit-card-sized gas chromatography platform that can analyze volatile compounds within seconds.
Study the label of almost any food product and you're likely to see the rather vague warning, "May contain peanuts," somewhere on there. These warnings of peanut contamination could soon lose much of their uncertainty, thanks to a novel form of near infrared (NIR) spectroscopy known as NIR hyperspectral imaging.
A newly developed spectroscopy method is helping to clarify the poorly understood molecular process by which an anti-HIV drug induces lethal mutations in the virus’ genetic material. The find could bolster efforts to develop the next generation of anti-viral treatments.
A recent collaboration is proving the potential for molecular imaging in plant research that could produce greater yields, healthier varieties and more food for a hungry planet with a rising average temperature. Researchers used spectroscopy to examine the development of pollen grains during the development of two pea varieties exposed to heat stress.
The organic chemicals in fracking fluid have been uncovered in two new studies, providing a basis for water contamination testing and future regulation. The research reveals that fracking fluid contains compounds like biocides, which are potentially harmful if they leak into the groundwater.
Precious works of art in need of preservation or authentication could be studied using a laser technique, Micro-SORS, derived from a technique called Spatially Offset Raman Spectroscopy (SORS). Last year, researchers proved the method could analyze artificially prepared layers of paint without destroying any part of them. Now, they have successfully applied it to real objects of precious art.
Inside a cryogenic radiofrequency ion trap, highly charged ions are cooled down to sub-Kelvin temperatures by interaction with laser-cooled singly charged Beryllium ions. This new method opens the field of laser spectroscopy of HCIs providing the basis for novel atomic clocks and high-precision tests of the variability of natural constants.
A vibrational spectroscopic imaging technology that can take images of living cells could represent an advanced medical diagnostic tool for the early detection of cancer and other diseases. High-speed spectroscopic imaging makes it possible to observe the quickly changing metabolic processes inside living cells and to image large areas of tissue, making it possible to scan an entire organ.
Dozens of common plants are toxic. Archaeologists have long suspected that our Paleolithic ancestors used plant poisons to make their hunting weapons more lethal. Now, scientists have developed a technique for detecting residues of deadly substances on archaeological objects.
In a world first, researchers have found that a naturally occurring chemical attracts pregnant malaria-transmitting mosquitoes– a discovery that could boost malaria control efforts. The chemical, cedrol, found in mosquito breeding sites near Africa’s Lake Victoria, could be used in traps that would “attract and kill” the female mosquito, preventing reproduction.
Despite the popularity of HPLC, it isn’t always clear which grade of solvent should be selected when performing HPLC analysis for gradient applications. Using an incorrect solvent can lead to unstable baselines, ghost peaks and perceived product quality issues. To ensure the most reliable results from HPLC analysis, it is important to choose the correct solvent grade.