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21 articles for “folding”
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Research ArticleOpen accessEvery word in the titleA COMPARATIVE STUDY FOR RHODOPSIN PROTEIN FOLDING PROBLEMIman Ahmed Mahmoud, Amr Ahmed Badr, Mostafa Abdel AzimProteins are very important components in any living cells. A number of diseases such as Retinitis pigmentosa, Stargadt-like macular degeneration and Doyne Honeycomb Retinal Dystrophy (DHRD) diseases are shown to result from misfunctioning of proteins. Protein folding problem is a way to predict the best and optimal 3D molecular structure (tertiary structure) of a protein which is then considered to … …Journal of Computer Science, Vol. 10, Issue 10 · 6 May 2014 · 7,071 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDeformation Retracts of the Reissner-Nordstrom Spacetime and its FoldingsA. E. El-Ahmady, A. Al-RdadeOur aim in the present article is to introduce and study the relation between the deformation retract of the Reissner-Nordstrom spacetime N4 and the deformation retract of the tangent space Tp (N4). Also, this relation discussed after and before the isometric and topological folding of N4 into itself. New types of conditional folding are presented. Some commutative diagrams are obtained. …American Journal of Applied Sciences, Vol. 10, Issue 7 · 2 Jul 2013 · 6,443 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFoldings and Deformation Retract of HyperhelixE. AL-Hesiny, A. E. El-AhmadyOur aim in the present study is to introduce and study new types of retractions of hyperhelix in Minkowski space. Types of the deformation retracts of hyperhelix in Minkowski space were discussed. The relations between the foldings and the deformation retracts of hyperhelix in Minkowski space were deduced. Types of minimal retractions of hyperhelix in Minkowski space were obtained. Also, … …Journal of Mathematics and Statistics, Vol. 8, Issue 2 · 5 Jun 2012 · 7,117 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleGraph Folding of Some Special GraphsE. El-Kholy, A. El-EsawyIn this study we introduced the definition of graph folding then, we proved that we cannot fold any complete graph except the bipartite graph. By using incidence matrices we described the graph folding. …Journal of Mathematics and Statistics, Vol. 1, Issue 1 · 30 Mar 2010 · 7,351 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFolding of Trefoil Knot and its GraphM. El-Ghoul, A. I. Elrokh, M. M.A. ShamiriIn this study, we introduce the effect of the folding, conditional folding, retraction and conditional retraction on trefoil knot and its graph. We introduce the sheeted trefoil knot and the folding and retraction of this type and present the limit of foldings. We study how to obtain the types of link graph by adjacency matrix for any number of vertices … …Journal of Mathematics and Statistics, Vol. 2, Issue 2 · 30 Jun 2006 · 7,150 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Meaning of a Redundant Codon: There is Protein Folding Information in Nucleic Acids in Addition to the Genetic CodeJan C. Biro, Josephine M.K. BiroAll the information necessary for protein folding is supposed to be present in the amino acid sequence. It is still not possible to provide specific ab initio structure predictions by bioinformatical methods. It is suspected that additional folding information is present in protein coding nucleic acid sequences, which is not represented by the known genetic code. Nucleic acid subsequences comprising … …American Journal of Biochemistry and Biotechnology, Vol. 2, Issue 1 · 31 Mar 2006 · 8,292 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleResearch of Effect of Peculiarities of Creasing a Polymer Sheet Material on a Rigid Base on Parameters of a Folding OperationIl'dus Zakirov, Yuriy Kataev, Alexandr Nikitin, Nargiz FaizullinaFolded elements are widespread in design of various products. They are made of sheet metal, cardboard, plastics or other materials. For example, heat exchangers, printed products, cardboard or plastic folders, folded fillers for three- or multilayered panels, which are made of paper, cardboard or plastics material can be mentioned. Although folded fillers are significantly advanced in terms of structural or … …American Journal of Applied Sciences, Vol. 14, Issue 10 · 20 Aug 2017 · 7,542 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleSolving Protein Folding Problem using Elitism-Based Compact Genetic AlgorithmAmr Badr, Ibtehal M. Aref, Basma M. Hussien, Yosr EmanProteins are vital components of living cells. A number of diseases such as Alzheimer's, Cystic fibrosis and Mad Cow diseases are shown to result from misfunctioning of proteins. Problem statement: Protein folding problem is the process of predicting the optimal 3D molecular structure of a protein, or tertiary structure, which is an indication of its proper function. Approach: An enhancement … …Journal of Computer Science, Vol. 4, Issue 7 · 31 Jul 2008 · 6,856 accessesView PDFCite
Research ArticleOpen accessIn the keywordsResearch of the Process of Shaping Folded Filler of Sandwich Panels from CardboardIl'dus Zakirov, Alexandr Nikitin, Alexandr Naumov, Nargiz FaizullinaSandwich panels with the corrugated filler made of composite cardboard are used in building constructions, road sound dampening screens, etc. Taking into account that in industries applying sandwich panels, the demand for such filler is relatively high, the competitiveness of the product must be at a high level. This requires developing a high-performance industrial technology to produce it. These production … …American Journal of Applied Sciences, Vol. 12, Issue 12 · 24 Nov 2015 · 6,549 accessesView PDFCite
Research ArticleOpen accessIn the keywordsImproving Protein 3D Structure Prediction Accuracy using Dense Regions Areas of Secondary Structures in the Contact MapAmer F. Al-Badarneh, Mohammad A. Khalil, Mo'taz A. Al-HamiProblem Statement: The protein folding problem is a fundamental problem in structural molecular biology. This problem describes how a protein is transformed from its primary sequence (i.e., amino acid sequence) into the three dimensional structure (3D structure) for this sequence that determines the function of the protein. The 3D structure of a protein can be represented using a square symmetrical … …American Journal of Biochemistry and Biotechnology, Vol. 4, Issue 4 · 31 Dec 2008 · 7,533 accessesView PDFCite