Ultrafiltration Characteristics of Glucose Polymers with Low Polydispersity

Ultrafiltration characteristics of plasmid DNA

Plasmids are extra-chromosomal circular double-stranded DNA molecules that can be used to develop recombinant cell lines and to deliver therapeutic genetic material. In gene therapy applications, the in-vivo insertion of the genetic vector results in the production of a desired therapeutic bio-molecule. Gene therapy is of interest in the treatment of a wide range of medical conditions including...

Low-bias macroscopic analysis of polydispersity.

where s(z), which characterizes the ‘polydispersity’, is to be estimated. In addition to actual size polydispersity, the distribution s(z) may describe additional processes, such as non-translational motions. At most, the covariance matrix of the noise components, ej1 is approximately known. The kernel, K(1; t), is assumed to be known and typically contains a scattering form factor, a weighting...

Preconcentration of low levels of americium and plutonium from waste waters by synthetic water-soluble metal-binding polymers with ultrafiltration

Characteristics of Collodion Membranes for Ultrafiltration

An apparatus for the production of graded collodion membranes is described. The theoretical considerations of calibration are discussed in relation to the demonstrable structure and statistical characteristics of the membranes. A new definition of an "end-point" is suggested.

Supramolecular star polymers. Increased molecular weight with decreased polydispersity through self-assembly.

A ditopic structure containing two heterocyclic DeAP units and programmed to self-assemble is used as an initiation unit for the synthesis of polylactide and polystyrene. The resultant polymers self-assemble into higher molecular weight structures with a lower molecular weight distribution. The largest discrete nanoscale polymeric assembly is proposed to be a hexameric star with a molecular wei...