We study the action of the symmetric group Σn on a tensor product of n − 1 copies of a commutative Hopf algebra A, defined by the second author [8]. We show that for ‘nice’ Hopf algebras, the cohomology algebra H∗(Σn;A⊗n−1) is independent of the coproduct if n.(n − 2)! is invertible in the ground ring. Let A be a graded, connected, unital, counital, associative, coassociative Hopf algebra. In s...

The molar mass distribution of a polymer sample is a critical determinant of its material properties and is generally analyzed by gel permeation chromatography or more recently, by MALDI-TOF mass spectrometry. We describe here a novel method for the determination of the degree of polymerization of polydisperse, uncharged, water-soluble polymers (e.g., poly(ethylene glycol) (PEG)), based upon si...

BACKGROUND Peptide-drug-conjugates (PDCs) are being developed as an effective strategy to specifically deliver cytotoxic drugs to cancer cells. However one of the challenges to their successful application is the relatively low stability of peptides in the blood, liver and kidneys. Since AuNPs seem to have a longer plasma half-life than PDCs, one approach to overcoming this problem would be to ...

Heterodimerization of human epidermal growth factor receptor 2 (HER2) with HER3 initiates aberrant downstream growth-signaling pathways in tumors. Our objective was to construct bispecific radioimmunoconjugates (bsRICs) that recognize HER2 and evaluate their ability image tumors athymic mice express one or both receptors using small-animal SPECT/CT. Methods: bsRICs were constructed by re...

this investigation was designed to determine the effect of intact ovalbumin and mannose-conjugatedovalbumin on the prevention of salmonella typhimurium adherence to the epithelium of small intestine ofchickens. mannose-conjugated ovalbumin was produced by maillard-type reaction between chickenovalbumin and d-mannose at 60°c. the results revealed that incubation up to 96 hrs caused the highestam...

Polydimethylsiloxane (PDMS) is an elastomeric polymer frequently used as implant material, for flexible tubing and in microfluidic devices. The pronounced hydrophobic surface of this unique material impedes many applications where a good wetting behavior required. Consequentially, various ways modifications have been to introduce new properties. Plasma treatment the most popular technique respe...

We report the first observation of continuous degenerate four-wave mixing (DFWM) with color centers in LiF. Using a new technique which permits subkilohertz resolution, we have also observed the nearly degenerate four-wave mixing (NDFWM) spectrum in the visible spectral region.