Surface-active organics (surfactants) have previously been measured in atmospheric aerosol particles to quantify their ability to reduce particle surface tension and influence the indirect effects of aerosol particles on the climate. However, surfactants have not been extensively studied in biomass burning aerosols (BBA), which could result in an underestimation when quantifying the contribution of surface tension on aerosol-cloud interactions.

Nosocomial bacterial infections are a prevalent issue due to pathogenic bacteria having easier access to invade the bloodstream.

Nowadays, ion mobility is getting more and more popular due to its ability to add an additional degree of separation when coupled with traditional techniques like liquid or gas chromatography along with providing key information for a molecule’s collision crosssection (CCS). CCS is a measurement of a molecule’s effective area when it is allowed to collide with a neutral gas such as Helium or Nitrogen under the influence of an electrical current.

In response to environmental stress, living organisms are known to actively alter their membrane lipid compositions in their cell membranes to maintain cellular function and integrity. Glycerophospholipids, a main component of bacterial and human cell membranes, consist of a phosphate headgroup, glycerol backbone, and two fatty acids chains attached at either the sn-1 or sn-2 positions.

Tissue-imitating scaffolds play an important role not only in tissue-engineering research but also in actual medical aplications. For example for treatment of severe burns. When seeded with mesenchymal stem cells (MSCs), such a MSCs/scaffold system can significantly accelerate healing, reduce fibrosis and scarring, promote angiogenesis and keratinization, and reduce inflammation [1-5].

Gamma-ray spectroscopy provides answers to the questions of What, How (much), and Where. These questions are answered via different types of detectors and using different techniques. Multiple detector systems and the reasons for developing those systems will be discussed.

Next an overview/quick history of the National Labs (Manhattan project to now) will be presented and current job / internships/ and other opportunities for collaboration with SRNL (or other National Labs) will be shared.

Metals in proteins enable a range of chemical functionality due to different redox states, electronic structures, and coordination environments, empowering an expansive breadth of biomolecular reactivity. This talk will highlight several research projects in the Bowman Lab on metalloprotein biology and the methods available to interrogate how structure contributes to their unique chemistry.

The selective cleavage and construction of chemical bonds are the foundation of synthetic chemistry. In these processes, transition metal complexes have been broadly utilized to mediate the otherwise difficult transformations, in which the metal center often plays an active role making and breaking bonds, whereas the ligands are spectators. In contrast, the active participation of actor ligands in bond cleavage and formation processes has recently found use in small molecule activation and catalysis.