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Structure creation, methods

In summary, this chapter gives a comprehensive insight into the problematic of examined new method for pol5rmer surface patterning. For surface modification we used PMMA with different molecular weigiht and polymer photoresist. Mechanism of structure creation was analyzed and found to be dependent on surface tension gradient introduced by laser light... [Pg.172]

The development of RNA three-dimensional structure determination methods requires three essential components. First is a computer representation, or a data structure, of RNA three-dimensional structural knowledge and data. Second is an RNA conformational search space that includes three-dimensional structures consistent with the computer representation. The implementation of a conformational search space includes the following tasks (i) the creation of a set of operators to manipulate the RNA three-dimensional structures (ii) the definition of a metric to evaluate RNA three-dimensional structures (iii) the design of an efficient method for applying the chosen metric and (iv) the design of an efficient method for generating the next three-dimensional structure to consider. Third is an inference engine which searches the conformational search space for three-dimensional structures that fit input descriptions. [Pg.1930]

On the data structuring level the method for defining semantics is borrowed from the concepts of abstract data types the effect of elementary operations on the data structure (creation, deletion, identification, navigation) is used. [Pg.259]

The Institute has many-year experience of investigations and developments in the field of NDT. These are, mainly, developments which allowed creation of a series of eddy current flaw detectors for various applications. The Institute has traditionally studied the physico-mechanical properties of materials, their stressed-strained state, fracture mechanics and developed on this basis the procedures and instruments which measure the properties and predict the behaviour of materials. Quite important are also developments of technologies and equipment for control of thickness and adhesion of thin protective coatings on various bases, corrosion control of underground pipelines by indirect method, acoustic emission control of hydrogen and corrosion cracking in structural materials, etc. [Pg.970]

In 1971 the Protein Data Bank - PDB [146] (see Section 5.8 for a complete story and description) - was established at Brookhaven National Laboratories - BNL -as an archive for biological macromolccular cr7stal structures. This database moved in 1998 to the Research Collaboratory for Structural Bioinformatics -RCSB. A key component in the creation of such a public archive of information was the development of a method for effreient and uniform capture and curation of the data [147], The result of the effort was the PDB file format [53], which evolved over time through several different and non-uniform versions. Nevertheless, the PDB file format has become the standard representation for exchanging inacromolecular information derived from X-ray diffraction and NMR studies, primarily for proteins and nucleic acids. In 1998 the database was moved to the Research Collaboratory for Structural Bioinformatics - RCSB. [Pg.112]

In the last 20 years a great deal of effort has been focused towards the immobilization of chiral catalysts [2] and disparate results have been obtained. In order to ensure the retention of the valuable chiral hgand, the most commonly used immobihzation method has been the creation of a covalent bond between the ligand and the support, which is usually a solid, hi many cases this strategy requires additional functionalization of the chiral hgand, and this change - together with the presence of the very bulky support - may produce unpredictable effects on the conformational preferences of the catalytic complex. This in turn affects the transition-state structures and thus the enantioselectivity of the process. [Pg.150]

Mechanical and chemical methods for qualitative and quantitative measurement of polymer structure, properties, and their respective processes during interrelation with their environment on a microscopic scale exist. Bosch et al. [83] briefly discuss these techniques and point out that most conventional techniques are destructive because they require sampling, may lack accuracy, and are generally not suited for in situ testing. However, the process of polymerization, that is, the creation of a rigid structure from the initial viscous fluid, is associated with changes in the microenvironment on a molecular scale and can be observed with free-volume probes [83, 84]. [Pg.289]

When discussing various methods for the synthesis of protein-like HP-copolymers from the monomeric precursors (Sect. 2.1), we pointed to the possibility of implementation of both polymerization and polycondensation processes. The studies of the potentials of the latter approach in the creation of protein-like macromolecular systems have already been started. The first published results show that using true selected reactions of the polycondensation type and appropriate synthetic conditions (structure and reactivity of comonomers, solvent, temperature, reagent concentration and comonomer ratio, the order of the reagents introduction into the feed, etc.) one has a chance to produce the polymer chains with a desirable set of monomer sequences. [Pg.133]

There are, in principle, two possible approaches to create a library of molecules. One strategy is based on the synthesis of structurally defined molecules independent of the method of synthesis, while the other strategy relies on the creation of a mixture of compounds. The former strategy is more straightforward and seems to be less problematic to assay since only one molecule is involved in each assay. The advantage of the latter strategy, on the other hand, is the greater number of compounds that can be obtained in the same number of reactions. In the case of peptides for example,... [Pg.240]


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See also in sourсe #XX -- [ Pg.384 , Pg.385 ]




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Creation methods

Structural methods

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