As much as two-thirds of Earth's carbon may be hidden in the inner core, making it the planet's largest carbon reservoir, according to a new model that even its backers acknowledge is "provocative and speculative."
The semiconductor industry is built on the propensity of electrons in silicon to get kicked out of their atomic shells and become free. These mobile electrons are routed and switched though transistors, carrying digital information. An international team of physicists and chemists has taken snapshots of this ephemeral event using attosecond pulses of soft X-ray light lasting only a few billionths of a billionth of a second.
Swimmers looking to monitor and improve technique, and patients striving to heal injured muscles, now have a new light-based tool to help reach their goals. Researchers have described the first measurements of muscle oxygenation underwater and the development of the enabling technology.
By studying the color of seabird guano in the infrared part of the spectrum, researchers were able to identify and isolate penguin and seabird poo’s unique spectral signature from bare rocks and snow. Applying this to satellite imagery, the team was able to identify all known major colonies of Adelié penguins, and colonies of several species of seabirds.
Research has linked the increase in sudden cardiovascular death with the recent consumption of cocaine. In people in the 19-49 age bracket, this risk is quadrupled.
As the holidays draw near, many of us will hop on a plane to visit friends and family– or just get away from it all. Some will be subjected to a swab at the airport to test clothes and baggage for explosives. So how does this process work? The answer is chromatography.
The December issue of Chromatography Techniques details a mass spectrometry technique enables the detection of drugs and medical conditions from just a single drop of fluid, such as blood or urine, within minutes. Other articles include: size of future mass spec, choosing HPLC columns, soft ionization, separation of antibodies. There are also new products.
Because of the high cost of HPLC columns, there are numerous ways to find out which column(s) might best be of use for an intended but new separation. If some of the components are known, then the literature or manufacturers’ websites can be consulted. This might take some time, but the research of others can save both time and money in your own work.
Pre-formulated buffers for pH gradient have greatly simplified the development of ion exchange chromatography (IEX) of monoclonal antibodies (mAbs). Three features make this simplification possible.
Soft ionization remains a relatively underused technique for GCMS, despite its ability to provide improved confidence in the identification of a range of challenging analytes. But there is now a new approach that makes it possible to lower the energy of electron ionization to achieve soft ionization, without the disadvantages with which it has historically been associated.
Mass spectrometry (MS) is the workhorse of analytical chemistry. It performs the analysis of the sample, making MS equipment an essential part of the analytical instrumentation market. A recent shift in the laboratory landscape, however, is forcing a change in the size and functionality of mass spec equipment.
UP Analytical’s GasMix is a companion to set up on-site customized preparation for single and multipoint calibration gas standards. The principle is based on the mixing and/or dilution of 2 to 12 gas standards and may be used with virtually all types of analytical instruments, with applications such as analyzer calibration and validation, odorize natural gas, synthetic gas mixture generation, glove box atmosphere control, reactor gas feeding, sample conditioning prior to analysis and more.
The Thermo Scientific Q Exactive Focus LC-MS/MS is designed to make the qualitative and quantitative power of Orbitrap-based instruments available to customers who use Q-TOF mass spectrometry or other technologies.
Shimadzu Scientific Instruments has added two integrated liquid chromatography systems to its HPLC and UHPLC line—the Prominence-i and Nexera-i. Combining enhanced functionality, an intuitive operating environment and full automation, the series provides performance and an efficient workflow for conventional to ultra-high-speed analysis.
Shimadzu Scientific Instruments’ Nexera-e Comprehensive Two-Dimensional Liquid Chromatograph (2-D-LC) offers a powerful separation method for the most complex sample matrices. The system provides an enhanced level of knowledge and understanding of sample analytes, which is beneficial to scientists analyzing pharmaceutical impurities, proteins, lipids, peptides, food extracts and natural products.
The Restek Air Valve Excellence (RAVE) brings long-life, leak-free performance and simple operation to air sampling canisters. This durable design has been engineered to exceed 15,000 cycles. Every valve is leak-tested with helium to 1x10-6 mL/sec before it leaves the facility.
JM Science offers a selection of deuterium lamps (D2 Lamps)for atomic absorption, ultraviolet visible spectrophotometer and HPLC instrumentation. The deuterium lamp has a low-pressure, gas discharge light source often used in spectroscopy when a continuous spectrum in the UV region is needed.
GE Healthcare Life Sciences’ Capto S ImpAct cation exchange chromatography medium is designed for efficient and flexible purification of monoclonal antibodies (MAbs). The product is a strong cation exchanger for the intermediate and polishing steps when purifying MAbs and a range of other biomolecules.
Cleaver Scientific has debuted its 2015 catalog, which has been expanded to 156 pages to provide detailed information covering the company’s range of instruments, chemicals and consumables for electrophoresis and general lab equipment for life science research.
Bronkhorst High-Tech BV’s Vapor Delivery Modules are compact sub-systems that incorporate a (thermal or Coriolis) liquid flow controller, one or two mass flow controllers for carrier gas and a temperature-controlled mixing and evaporation device. The modules are equipped with a 1.8” TFT display and push buttons for local readout and control.
Bal Seal Engineering has expanded its line of spring-energized seals to include large diameters—up to 120” ID—for static, slow-speed rotary and reciprocating analytical applications. The line offers equipment designers and end users resistance to wear, extrusion and chemicals.