Molecular separations by lattice inclusion

Carbon Molecular Sieves for Hydrocarbon Separations by Adsorption

Centrifugal Separations in Molecular and Cell Biology

It has been just five years since gray-scale ultrasound (U/S) became clinically available. Yet the day-to-day importance of U/S in general medicine and surgerynot just the traditional areas of ob/gyn and echocardiography-would be hard to overestimate. Because U/S is so new, however, there are still many clinicians who are ill at ease with those funny fuzzy speckled images, so different from the...

Recovery of inclusion separations in strongly heterogeneous composites from effective property measurements

An effective property of a composite material consisting of inclusions within a host matrix depends on the geometry and connectedness of the inclusions. This dependence may be quite strong if the constituents have highly contrasting properties. Here we consider the inverse problem of using effective property data to obtain information on the geometry of the microstructure. While previous work h...

Separations of molecular species of phosphatidic acid by high-performance liquid chromatography

Molecular species of phosphatidic acid (PA) were separated by reversed-phase high-performance liquid chromatography with mobile phases of acetonitrile-methanol-water containing quaternary ammonium phosphates (OAPs). Effective resolution of PA complexes was achieved by using low-mass OAPs at concentrations ~ 50 mM or high-mass OAPs at concentrations ~ 10 mM. Capacity factor (k') values were foun...

Identification of low molecular weight proteins isolated by 2-D liquid separations.

Proteins with molecular mass (M(r)) <20 kDa are often poorly separated in 2-D sodium dodecyl sulfate polyacrylamide gel electrophoresis. In addition, low-M(r) proteins may not be readily identified using peptide mass fingerprinting (PMF) owing to the small number of peptides generated in tryptic digestion. In this work, we used a 2-D liquid separation method based on chromatofocusing and non-po...