We have developed two significant modifications to conventional airstripping of MTBE from contaminated groundwater. The first modification involves application of thermodynamic principles to improve by at least a factor of three the overall mass transfer efficiency, obtaining very high removal efficiencies, using a combination of higher operating temperatures (40-60 C) and vacuum pressures (fro...

The use of directing groups allows high levels selectivity to be achieved in transition metal-catalyzed transformations. Efficient removal these auxiliaries after successful functionalization, however, can very challenging. This review provides a critical overview strategies used for Daugulis' 8-aminoquinoline (2005-2020), one the most widely N,N-bidentate groups. limitations are discussed and ...

In light of the multitude of new Cas9-mediated functionalities, the ability to carry out multiple Cas9-enabled processes simultaneously and in a single cell is becoming increasingly valuable. Accomplishing this aim requires a set of Cas9-guide RNA (gRNA) pairings that are functionally independent and insulated from one another. For instance, two such protein-gRNA complexes would allow for concu...

Objective The goal of this laboratory exercise is to acquaint students with some of the chemical reactions that result in the binding of inorganic and organic pollutants in subsurface materials. Extractants used by engineers to release contaminants at hazardous waste sites (where mixtures of both types of contaminants are present) may or may not prove effective, depending upon their mechanism o...

In this paper we report some experimental results concerning the stripping in any portion of the optical fibers at 10.6 μm wavelength. These experimental procedures have been performed using a CO2 laser with 40 W power and a galvanometer scanner with 150 mm focal length. The objective of this paper was to find the optimal conditions (speed of the laser along the optical fiber) for a good stripp...

Although the application of code transformations is critical to exploit parallelism in program code, few guidelines or tools are provided to determine what transformations should be applied and where they should be applied. In this paper, we approach this problem by first providing a taxonomy of code transformations to assist the user in parallelizing programs. We then present an efficient tech...

A high performance distillation system to remove krypton from xenon was constructed, and a purity level of Kr/Xe = ∼ 3 × 10 was achieved. This development is crucial in facilitating high sensitivity low background experiments such as the search for dark matter in the universe.