نتایج جستجو برای Modification

تعداد نتایج: 86422  

Journal: :Critical reviews in food science and nutrition 1998
D M Barrett, E Garcia, J E Wayne,

Knowledge of the textural properties of processing tomatoes is crucial to ensuing product acceptability; measurement, control, and optimization of these properties through judicious selection of varieties and control of unit operations results in products that the consumer prefers. It is important to first define the terms texture, rheology, consistency, and viscosity prior to discussing princi...

1995
M. Park, K. R. Lane, J. M. Parpia, M. S. Isaacson,

We have utilized several processing techniques to locally modify the superconducting transition temperature and the normal state resistivity of aluminum thin films. The techniques of ion implantation, application of a magnetic overlayer, and reactive ion etching have been used to fabricate S-N interfaces with controlled differences in transition temperatures and normal state resistances. Lithog...

2010
Tahmineh Sanamrad, Peter M. Fischer, Kyumars Sheykh Esmaili,

Nowadays, sophisticated near-real time data stream queries run on massive and continuous amount of data, resulting from transactions and measurements. However, these Long-Running Data Stream Queries might not correspond to user requirements at some point and need to be modified. Considering the distributed, continuous and near-real time nature of data streams, modifying a query needs to be cond...

2006
Dorota G. Pijanowska, Elżbieta Remiszewska, Cecilia Pederzolli, Lorenzo Lunelli, Michele Vendano, Roberto Canteri, Konrad Dudziński, Jerzy Kruk, Wladyslaw Torbicz,

In this paper, methods of surface modification of different supports, i.e. glass and polymeric beads for enzyme immobilisation are described. The developed method of enzyme immobilisation is based on Schiff’s base formation between the amino groups on the enzyme surface and the aldehyde groups on the chemically modified surface of the supports. The surface of silicon modified by APTS and GOPS w...

2005
WILLEM H. MAGER,

Two-dimensional polyacrylamide-gel electrophoretic analysis of yeast ribosomal proteins uniformly labelled in vivo with [methyl-3H]methionine and [1-'4C]methionine revealed that four ribosomal proteins are methylated, i.e. proteins S31, S32, L15 and L41. Lysine and arginine appear to be the predominant acceptors of the methyl groups. The degree of methylation ranges from 0.09 to 0.20 methyl gro...

1998
Richard K. Larson,

It is a familiar lesson from physical theory that interactions yield an important probe into structure. In the experiments of Rutherford almost 90 years ago, bits of matter were projected together; the physical properties of their interactions yielded evidence for a nucleus, hidden in the heart of atom. In semantics, the results of Donald Davidson in a famous 1967 paper might be viewed in a sim...

2004
Per Persson,

This thesis describes strategies for and examples of cellulose fiber modification. The ability of an engineered biocatalyst, a cellulose-binding module fused to the Candida antarctica lipase B, to catalyze ring-opening polymerization of εcaprolactone in close proximity to cellulose fiber surfaces was explored. The water content in the system was found to regulate the polymer molecular weight, w...

Journal: :Zeitschrift fur Naturforschung. Section C, Biosciences 1979
W Kufer, H Scheer,

The reaction of biliproteins with sodium dithionite has been studied. The reagent is selective towards the chromophores. In denatured phycocyanin from Spirulina platensis, all three chromophores react to form yellow "phycorubin", whereas only 1/3 of the chromophores react in native phycocyanin in a non-statistical manner. From reversion experiments, it can be shown, that the thermodynamic stabi...

Journal: :Journal of biomedical materials research. Part A 2003
M Müller, J Vörös, G Csúcs, E Walter, G Danuser, H P Merkle, N D Spencer, M Textor,

Microspheres made of poly(lactic-co-glycolic acid) (PLGA) are biocompatible and biodegradable, rendering them a promising tool in the context of drug delivery. However, nonspecific adsorption of plasma proteins on PLGA micro- and nanospheres is a main limitation of drug targeting. Poly(L-lysine)-g-poly(ethylene glycol) (PLL-g-PEG), physisorbed on flat metal oxide surfaces, has previously been s...

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