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71.
Wilfred F. van Gunsteren Dirk Bakowies Riccardo Baron Indira Chandrasekhar Markus Christen Xavier Daura Peter Gee Daan P. Geerke Alice Glttli Philippe H. Hünenberger Mika A. Kastenholz Chris Oostenbrink Merijn Schenk Daniel Trzesniak Nico F. A. van der Vegt Haibo B. Yu 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2006,118(25):4168-4198
72.
73.
Sonja Meddeb François-Regis Chalaoux Jean-Pierre Ballini Daniel Baron Paul Vigny Jean-Philippe Demaret 《Journal of computer-aided molecular design》1995,9(2):160-170
Summary The tetradecapeptide of sequence H-Asp-Val-Asp-Glu-Arg
5-Asp-Val-Arg-Gly9-Phe-Ala-Ser-Phe-Leu-NH2 is recognized by a putative maturation endoprotease of the Xenopus laevis skin, which cleaves between Arg8 and Gly9. A conformational search has been performed on this peptide by simulated annealing calculations. Two different models in agreement with the NMR data were found. The conformational difference between the two types of model is located in the consensus sequence, i.e., from Arg5 to Gly9. 相似文献
74.
This paper considers the problem of locating M facilities on the unit square so as to minimize the maximal demand faced by each facility subject to closest assignments and coverage constraints. Focusing on uniform demand over the unit square, we develop upper and lower bounds on feasibility of the problem for a given number of facilities and coverage radius. Based on these bounds and numerical experiments we suggest a heuristic to solve the problem. Our computational results show that the heuristic is very efficient, as the average gap between its solutions and the lower bound is 4.34%. 相似文献
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79.
Alvarez Mauro Costa Silvio C. Huber Anton Baron Madalena Fontana José D. 《Applied biochemistry and biotechnology》1995,(1):367-377
The waxy pecto-cellulosic cuticle of cladodes of the columnar cactusCereus peruvianus (19% of the whole phytobiomass; dry wt) is a source of an α-d-polygalacturonic or pectic acid (35–40% yield, on a dry wt based on the wax-free pectocellulose layer). Warm EDTA/oxalate
or room temperature strong acid/alkali cycles are efficient for pectic acid extraction, since divalent cation (mainly Ca2+) is a barrier to be removed within the native and compact architecture of the cuticle. Despite some molecular dispersion
arising from the application of strong mineral acid in the first extraction step, the pectic material appears to be quite
homogeneous and, on acid or enzymatic analyses, was shown to contain onlyd-galacturonic acid as its monomer.Cereus cuticle pectate (sodium salt) tends to gel above a concentration of 1%, a useful property that can be more easily obtained
by the inclusion of sucrose, light addition of calcium salt, and/or mild acidification. 相似文献
80.
Dr.-Ing. E. Baron Prof.Dr. Hab.-Ing. Cz. Woźniak 《Archive of Applied Mechanics (Ingenieur Archiv)》1995,66(1-2):126-133
Summary The subject of the contribution is an investigation of elastic composite plates with a microperiodic structure along the plate's midsurface. The computational models of the plates are largely based on the homogenization procedures leading to equations with constant coefficients. However, the homogenization theories neglect the microstructure length-scale effect on the plate's dynamic behaviour. The objective of this research is to formulate and investigate a refined theory of the composite plates under consideration, which would describe the microdynamic plate behaviour caused by the microstructure. The possible applications of the proposed theory are shown by an example.This research was partly supported by KBN, Warsaw, under grant 3 3310 92 03. 相似文献