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Ultrasound propagates through an elastic medium at a rate or speed named the ultrasound propagation velocity (UPV). This velocity is detd. by the rate at which the wave energy is transmitted, inversely related to the square root of the d. and compressibili ...
Inline conversion measurements in chem. reactions are in general and esp. in polymn. reactions necessary for process monitoring and control. For polymn. monitoring, the sound propagation (UPV) can be related to the texture of the bulk with a high accuracy. ...
Two series of novel, four-arm, star-shaped polypeptides were prepared via the ring-opening polymerization of γ-benzyl-L-glutamate N-carboxyanhydride and ε-benzyloxycarbonyl-L-lysine N-carboxyanhydride with a tetra-amino-substituted perylene fluorophore as ...
[GRAPHICS] An immobilized Ru(meso-tetraarylporphyrin) complex was shown to be a very efficient catalyst for the epoxidation of olefins. In the presence of HBr, alcohols and even alkanes could be converted to the corresponding ketones. For the latter reacti ...
A method of producing a microencapsulated pharmaceutical formulation is disclosed comprising causing a dye to be attached to the surface of pharmaceutical particles or particle clusters and applying a source of radiant energy to the dye in the presence of ...
BACKGROUND: We present the synthesis, characterization and initial structure-function analysis of a new class of bioactive agent that allows the application of techniques from colloid science to biological surfaces. Stable colloidal suspensions can be gene ...
Hexa-n-alkylcyclotrisiloxanes with side chains ranging from butyl up to decyl were polymerized anionically with cryptated lithium as the counterion. The polymerizations usually yielded polymers with low polydispersity, demonstrating the presence of a singl ...
Anti- V.cholerae monoclonal IgA antibodies have been produced using a hybridoma cell line (Zac3) grown in RPMI medium contg. 10% Fetal calf serum (FCS) and a completely defined protein- free medium. The latter has been optimized with respect to amino acid, ...
A quant. structure-reactivity relationship for the Michael-type addn. of thiols onto acrylates was detd. Several thiol-contg. peptides were investigated by examg. the correlation between the second-order rate const. of their addn. onto PEG-diacrylate and t ...
