Thematische Bibliographien / Cruciform structures

Auswahl der wissenschaftlichen Literatur zum Thema „Cruciform structures“

Autor: Grafiati

Veröffentlicht am 13. September 2021

Zuletzt aktualisiert am 3. Februar 2022

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Zeitschriftenartikel zum Thema "Cruciform structures":

Timsit, Youri, und Dino Moras. „Cruciform structures and functions“. Quarterly Reviews of Biophysics 29, Nr. 4 (Dezember 1996): 279–307. http://dx.doi.org/10.1017/s0033583500005862.

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In this paper, a structure-function analysis of B-DNA self-fitting is reviewed in the light of recent oligonucleotide crystal structures. Their crystal packings provided a high-resolution view of B-DNA helices closely and specifically fitted by groove-backbone interaction, a natural and biologically relevant manner to assemble B-DNA helices. In revealing that new properties of the DNA molecule emerge during condensation, these crystallographic studies have pointed to the biological importance of DNA—DNA interactions.

Ait Saada, Anissia, Alex B. Costa, Ziwei Sheng, Wenying Guo, James E. Haber und Kirill S. Lobachev. „Structural parameters of palindromic repeats determine the specificity of nuclease attack of secondary structures“. Nucleic Acids Research 49, Nr. 7 (27.03.2021): 3932–47. http://dx.doi.org/10.1093/nar/gkab168.

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Abstract Palindromic sequences are a potent source of chromosomal instability in many organisms and are implicated in the pathogenesis of human diseases. In this study, we investigate which nucleases are responsible for cleavage of the hairpin and cruciform structures and generation of double-strand breaks at inverted repeats in Saccharomyces cerevisiae. We demonstrate that the involvement of structure-specific nucleases in palindrome fragility depends on the distance between inverted repeats and their transcriptional status. The attack by the Mre11 complex is constrained to hairpins with loops <9 nucleotides. This restriction is alleviated upon RPA depletion, indicating that RPA controls the stability and/or formation of secondary structures otherwise responsible for replication fork stalling and DSB formation. Mus81-Mms4 cleavage of cruciforms occurs at divergently but not convergently transcribed or nontranscribed repeats. Our study also reveals the third pathway for fragility at perfect and quasi-palindromes, which involves cruciform resolution during the G2 phase of the cell cycle.

Mandal, Shankar, Sangeetha Selvam, Yunxi Cui, Mohammed Enamul Hoque und Hanbin Mao. „Mechanical Cooperativity in DNA Cruciform Structures“. ChemPhysChem 19, Nr. 20 (01.08.2018): 2627–34. http://dx.doi.org/10.1002/cphc.201800480.

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Frappier, L., G. B. Price, R. G. Martin und M. Zannis-Hadjopoulos. „Monoclonal antibodies to cruciform DNA structures“. Journal of Molecular Biology 193, Nr. 4 (Februar 1987): 751–58. http://dx.doi.org/10.1016/0022-2836(87)90356-1.

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Zannis-Hadjopoulos, M., O. Novac, D. Alvarez und G. B. Price. „14-3-3s are DNA-replication proteins“. Biochemical Society Transactions 30, Nr. 4 (01.08.2002): 397–401. http://dx.doi.org/10.1042/bst0300397.

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14-3-3 proteins are conserved multifunctional molecules, involved in many biological processes. Several 14-3-3 isoforms were recently shown to be cruciform DNA-binding proteins, which is a new activity ascribed to the 14-3-3 family. As cruciform-binding proteins, 14-3-3 proteins are putatively involved in the regulation of DNA replication. Inverted repeat sequences that are able to extrude into cruciform structures are a common feature of replication origins in both prokaryotes and eukaryotes. The involvement of cruciform structures in the initiation of DNA replication has been demonstrated. A leading model of 14-3-3 function proposes that they facilitate critical protein-protein interactions, thus serving as a central component of a wide variety of cellular processes.

Battistoni, Andrea, Luisa Leoni, Beatrice Sampaolese und Maria Savino. „Kinetic persistence of cruciform structures in reconstituted minichromosomes“. Biochimica et Biophysica Acta (BBA) - Gene Structure and Expression 950, Nr. 2 (Juli 1988): 161–71. http://dx.doi.org/10.1016/0167-4781(88)90008-5.

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Yu, Ying Xia, Bo Lin He und Xiao Dong Zhang. „Calculation about the Effect of Stress Concentration Coefficient on the Fatigue Properties for Welded Cruciform Joints of 16MnR Steel“. Applied Mechanics and Materials 189 (Juli 2012): 350–54. http://dx.doi.org/10.4028/www.scientific.net/amm.189.350.

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Stress concentration coefficient of welded joints has a crucial influence on mechanical properties of welded structures. Geometrical parameters of welded joints seriously affect the stress concentration coefficient. In order to increase the mechanical properties and safety of welded structures, it has great significance for reducing stress concentration coefficient and improving the mechanical properties of welded structures by researching and improving the geometry of welded joints. In this paper, the effect of stress concentration coefficient on the fatigue properties for welded cruciform joints of 16MnR steel was analyzed by using ABAQUS finite element and MSC.Fatigue programe, and the change rule of stress concentration coefficient with the variation of the parameter was studied and the fatigue life changed with the stress concentration coefficient was also researched. The calculation results indicate that reducing the weld tangent line angle θ can effectively decrease the stress concentration coefficient of welded cruciform joints, and the fatigue life of welded cruciform joints can be improved succesfully. In order to obtain the safety welded structures, the true weld tangent line angle θ should be controlled in the angle smaller than 20o.

Nobile, C., J. Nickol und R. G. Martin. „Nucleosome phasing on a DNA fragment from the replication origin of simian virus 40 and rephasing upon cruciform formation of the DNA.“ Molecular and Cellular Biology 6, Nr. 8 (August 1986): 2916–22. http://dx.doi.org/10.1128/mcb.6.8.2916.

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Nucleosomes were reconstituted in vitro from a fragment of DNA spanning the simian virus 40 minimal replication origin. The fragment contains a 27-base-pair palindrome (perfect inverted repeat). DNA molecules with stable cruciform structures were generated by heteroduplexing this DNA fragment with mutants altered within the palindromic sequence (C. Nobile and R. G. Martin, Int. Virol., in press). Analyses of the structural features of the reconstituted nucleosomes by the DNase I footprint technique revealed two alternative DNA-histone arrangements, each one accurately phased with respect to the uniquely labeled DNA ends. As linear double-stranded DNA, a unique core particle was formed in which the histones strongly protected the regions to both sides of the palindrome. The cruciform structure seemed to be unable to associate with core histones and, therefore, an alternative phasing of the histone octamer along the DNA resulted. Thus, nucleosome positioning along a specific DNA sequence appears to be influenced in vitro by the secondary structure (linear or cruciform) of the 27-base-pair palindrome. The formation of cruciform structures in vivo, if they occur, might therefore represent a molecular mechanism by which nucleosomes are phased.

Nobile, C., J. Nickol und R. G. Martin. „Nucleosome phasing on a DNA fragment from the replication origin of simian virus 40 and rephasing upon cruciform formation of the DNA“. Molecular and Cellular Biology 6, Nr. 8 (August 1986): 2916–22. http://dx.doi.org/10.1128/mcb.6.8.2916-2922.1986.

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Farajpourbonab, Ebrahim, Hossein Showkati und Sunil Kute. „Castellated cruciform steel columns“. World Journal of Engineering 15, Nr. 4 (06.08.2018): 440–49. http://dx.doi.org/10.1108/wje-04-2017-0088.

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Purpose The main function of the castellation process is making I-sections stiffer by increasing the height of web and supplying a higher moment capacity of primary axis than plain-webbed members of the same weight. In addition, it optimizes the use of heavy, costly constructional steel material and provides good services accessibility. The purpose of this study was to investigate the strength and buckling behavior of axially loaded castellated cruciform steel columns using finite element analysis. Although a significant body of research exists on the failure of different columns, there is no proper criterion introduced to determine the point of buckling in the equilibrium path of an imperfect column. Design/methodology/approach This paper considers a wide range of practical geometric dimensions and various end conditions using ANSYS software. Findings are reported for about 224 samples of castellated cruciform I-shaped sections, and a simplified approach to evaluate buckling capacity of castellated columns, using the slenderness-load curve, is developed. In addition, the axial compressive capacities of those steel sections are investigated numerically in the current study. Findings The results of nonlinear analyses of these columns revealed that the load-carrying capacity of castellated cruciform steel columns far outweighs and is more appropriate than that of the traditional cruciform steel columns. In the present paper, new geometric criteria have been introduced having the ability to cover different types of columns. It shows the critical load of columns in the range of elastic and inelastic behavior. Practical implications This study can provide a background for practical engineering applications and design specifications for steel structures with castellated sections. In the present paper, new geometric criteria have been introduced having the ability to cover different types of columns. It shows the critical load of columns showing both elastic and inelastic behavior. Because this method showed reliable performance, it can be used during experimental tests for detecting buckling point. Originality/value This study can provide background for practical engineering applications and design specifications for steel structures with castellated sections; also, a physical criterion has been defined for calculating the buckling load of real columns.

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Dissertationen zum Thema "Cruciform structures":

Shrestha, Alina. „Fatigue Testing and Data Analysis of Welded Steel Cruciform Joints“. ScholarWorks@UNO, 2013. http://scholarworks.uno.edu/td/1670.

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In this study, ABS Publication 115, “Guidance on Fatigue Assessment of Offshore Structures” is briefly reviewed. Emphasis is on the S-N curves based fatigue assessment approach of non-tubular joints, and both size and environment effects are also considered. Further, fatigue tests are performed to study the fatigue strength of load-carrying and non-load-carrying steel cruciform joints that represent typical joint types in marine structures. The experimental results are then compared against ABS fatigue assessment methods, based on nominal stress approach, which demonstrates a need for better fatigue evaluation parameter. A good fatigue parameter by definition should be consistent and should correlate the S-N data well. The equivalent structural stress parameter is introduced to investigate the fatigue behavior of welded joints using the traction based structural stress approach on finite element models of specimens, and representing the data as a single Master S-N curve.

Coudon, Florent. „Comportement mécanique du superalliage base nickel à solidification dirigée DS200+Hf“. Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLEM062/document.

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De nombreuses études ont permis de développer des modèles de plasticité cristalline rendant compte de l’anisotropie d’un monocristal. Les matériaux à solidification dirigée (DS) peuvent être simulés avec des modèles semblables, sous réserve de connaître la morphologie et l'orientation cristallographique des grains contenus dans la pièce. Pour éviter ces analyses microstructurales coûteuses, il est possible de développer des approches, déterministes ou analysant les dispersions de la réponse sur un lot de << pièces synthétiques >> résolues par la méthode des éléments finis. Dans cette étude, nous avons tenté d'apporter les outils nécessaires aux deux types de modélisation. Avant tout, un modèle du monograin de DS200+Hf a été identifié pour une gamme de température allant de l’ambiante à 1200°C. Ensuite, plusieurs montées d'échelle ont été envisagées, d'abord sur un volume élémentaire représentatif (VER) puis sur une structure tridimensionnelle (éprouvette cruciforme). Sur le VER, la réponse de plusieurs modèles micromécaniques a été confrontée à des calculs de référence utilisant la méthode des éléments finis. Puis, le comportement mécanique d'une éprouvette cruciforme en DS200+Hf a été étudié, en réalisant des essais expérimentaux biaxiaux qui, ensuite, ont permis d'évaluer les prévisions du modèle. Ces résultats amènent à s'interroger sur la modélisation adaptée aux structures oligogranulaires (i.e. constituées d’un faible nombre de grains) : faut-il mailler explicitement l'échelle locale (les grains) dans la structure ou malgré la non-séparabilité des échelles, le modèle homogénéisé continue-t-il de fournir des résultats satisfaisants ?
Various studies were aimed at developing crystal plasticity models to account for the anisotropic mechanical behaviour of single crystals. Directionally solidified (DS) materials can be modeled using such approaches, taking into account the underlying crystallographic structure. It requires the knowledge of the position, shape and crystallographic orientations of grains. To prevent heavy microstructure analyses, other models have to be developed for industrial calculations, using homogenization theory or considering a batch of synthetic pieces calculated using Crystal Plasticity Finite Elements Method (CPFEM). The aim of this thesis is to bring computational tools to carry out the two types of modeling for industrial applications. First of all, a crystal plasticity model for one grain of DS200+Hf is defined ranging from room temperature to 1200°C. Some scale transition rules, using full-field or mean-field approaches, are studied first in the theoretical case of a representative volume element (RVE) and then on tri-dimensional structures in order to access overall and local responses. For the RVE responses, micromechanical models are compared with a reference produced by CPFEM for various loadings. Moreover, the mechanical behaviour of a DS200+Hf cruciform specimen is studied. Biaxial tests with digital image correlation allow us to check the model predictions. These results raise questions about the modeling of oligogranular structures (i.e. with a small number of grains): should it be accepted that the local scale must be explicitly meshed, or, despite the fact that scale separability is not ensured, can we consider that the homogenized model still produces reliable results?

Šedý, Michal. „Analýza lokalizace inverzních repetic v bakteriálních genomech“. Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-449791.

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Inverted repeats (IR) are common part of DNA of all living prokaryotic and eukaryotic organisms. Inverted repeats plays an important role in the regulation of basics cells processes. They are responsible for formation of cruciform structures. Inverted repeats also cause genomic instability and can be a source of numerous mutations. Cruciform structures can be recognized by DNA-binding proteins and can also act as a transcriptional regulators. Using the Palindrome Analyser tool, the frequency of IR and localization of inverted repeats in bacterial genomes was analyzed. The frequency of IR across the bacterial genome is variable. The frequency of short inverted repeats shows an approximately quadratic dependence on the %GC content in the genome with a minimum of about 50% of GC content. The localization of inverted repeats with respect to “annotated features” show a non-random distribution. The frequency of IR for most features is higher “outside” than “inside”.

McGrier, Psaras Lamar. „Hydroxy cruciforms and bis(hydroxystyryl)benzenes: synthesis, structure, and photophysical properties of novel π-systems“. Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/37185.

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This thesis examines the synthesis, photophysical properties, and sensory responses of hydroxy-substituted 1,4-distyryl-2,5-bis(arylethynyl)benzenes (Cruciforms, XFs). These two-dimensional cross-conjugated materials possess spatially separated frontier molecular orbitals (FMOs). This spatial separation allows the HOMO and LUMO to be addressed independently by analytes, which leads to significant changes in their absorption and emission. These properties allow XFs to be utilized for the detection of various analytes. These studies highlight the benefits of utilizing XFs for the development of advanced functional solid state materials for sensory applications.

Paré-Lambert, Olivier. „Étude de l'extraction d'énergie du phénomène de Vibrations Induites par Vortex (VIV) lorsque deux cylindres sont placés de façon cruciforme“. Master's thesis, Université Laval, 2020. http://hdl.handle.net/20.500.11794/67578.

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Ratnasinghe, Duminda D. „Unusual Structure of a Human Middle Repetitive DNA“. Digital Commons @ East Tennessee State University, 1993. https://dc.etsu.edu/etd/2767.

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The L2Hs sequences are a polymorphic, interspersed, middle repetitive DNA family unique to human genomes. Genomic fingerprinting indicates that these DNAs vary from one individual to another and between tissues of the same individual. Sequence analysis reveals that they are AT-rich (76%) and contain many unusual sequence arrangements (palindromes, inverted and direct repeats). These sequence properties confer on the L2Hs elements the potential to fold into non-B-form structures, a characteristic of recombination hot spots. To test this hypothesis carbodiimide, osmium tetroxide and S$\sb1$ nuclease were used as single-strand specific probes to study a recombinant plasmid, pN6.4.39, containing a single L2Hs segment. Different forms of the plasmid substrate were analyzed, including linear molecules and circular forms of low, intermediate and high superhelical densities. In addition, plasmid DNA in growing E. coli cells were analyzed. Modified plasmid DNA was analyzed by primer extension in a sequencing-type reaction format. These studies demonstrate that the L2Hs sequences: (1) assume non-B-form structures both in vitro and in vivo, (2) map to predicted cruciform structures, (3) behave as C-type extrusion sequences, and (4) that these unusual DNA structures are dependent on plasmid superhelicity.

Nyczová, Adéla. „Analýza lokálních struktur v molekulách DNA“. Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-445146.

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Local DNA structures are alternative DNA conformations which can be formed aside from typical B-DNA conformation. These structures often play pivotal roles in regulation of basic biological processes, such as DNA replication, transcription or binding of specific ligands. This biological significance makes alternative DNA secondary structures a potential drug target. In this diploma thesis, local structures in genomes of viruses from Flaviviridae and Retroviridae families are analysed using bioinformatics tools. Furthermore, these structures are visualised using atomic force microscopy.

Sin, Ousphea. „Étude en deux dimensions de l'effet du taux de déformation sur la limite élastique de l'acier structural“. Mémoire, Université de Sherbrooke, 2017. http://hdl.handle.net/11143/11237.

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L’évaluation de la résistance probable des éléments dissipatifs d’énergie sismique lors du dimensionnement parasismique des charpentes d’acier au Canada repose sur la limite élastique probable de l’acier. Les taux de déformation élevés dans les éléments dissipatifs au cours d’un tremblement de terre ont pour effet d’augmenter la limite élastique de l’acier dans ces éléments. Le comportement dynamique de l’acier étudié par le biais d’essais uniaxiaux conventionnels ne permettent pas nécessairement de valider le comportement d’un élément dissipateur d’énergie sismique pouvant être sollicité selon deux dimensions. Les cadres contreventés excentriques, où le lien ductile subi des déformations biaxiales par les effets combinés du cisaillement et de la flexion en est un exemple. Le projet de recherche présenté dans ce mémoire de maîtrise vise à évaluer l’effet du taux de déformation sur la limite élastique de l’acier structural de grade 350W lors de sollicitations impliquant un état planaire de contrainte. La conception d’une éprouvette cruciforme optimale en acier basée sur des recommandations proposés dans la littérature et sur des analyses par éléments finis a été effectuée. Six essais de traction uniaxiaux et quatre essais de traction équibiaxiaux sur éprouvettes cruciformes ont été réalisés à différents taux de déformation entre 0.0001/sec et 2.4/sec. Durant ces essais, les déformations moyennes à travers la partie centrale des éprouvettes ont été mesurées par un système de potentiomètre conçu dans le cadre de ce projet. Quatre essais biaxiaux sur éprouvettes cruciformes selon des rapports de déformation distincts ont également été réalisés à un taux de déformation quasi-statique. Chaque essai a été simulé numériquement à l’aide d’un modèle éléments finis dans lequel la limite élastique a été calibrée afin de reproduire le comportement observé lors des essais. Le critère d’écoulement plastique de Von Mises ainsi qu’une formulation d’écrouissage non-linéaire ont été adoptés lors des analyses numériques. Les modèles calibrées ont permis de déterminer la limite élastique dynamique observée lors de chaque essai. Les résultats des analyses confirment que la limite élastique de l’acier augmente en fonction du taux effectif de déformation. Sept lois de prédiction de la limite élastique de l’acier ont été étudiées. Trois lois ont permis de représenter la limite élastique dynamique de l’acier testé dans la plage des taux de déformation étudiée. La loi qui semble la mieux adaptée à être implémentée dans un logiciel de modélisation a été identifiée. La loi de Drysdale et Zak utilisé dans le logiciel ADINA ne permet pas d’évaluer correctement le comportement dynamique observé lors des essais impliquant un taux élevé de déformation. Une étude numérique préliminaire sur le lien ductile est également présentée dans ce mémoire.

Bosland, Paul W. „The genetics and population structure of Fusarium oxysporum from crucifers“. 1986. http://catalog.hathitrust.org/api/volumes/oclc/14107323.html.

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Thesis (Ph. D.)--University of Wisconsin--Madison, 1986.
Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 101-114).

Bücher zum Thema "Cruciform structures":

Ambrogio e la cruciforme "Romana" basilica degli apostoli nei milleseicento anni della sua storia. Milano: NED, 1986.

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Buchteile zum Thema "Cruciform structures":

Lilley, David M. J., Karen M. Sullivan, Alastair I. H. Murchie und Judy C. Furlong. „Cruciform Extrusion in Supercoiled DNA — Mechanisms and Contextual Influence“. In Unusual DNA Structures, 55–72. New York, NY: Springer New York, 1988. http://dx.doi.org/10.1007/978-1-4612-3800-3_4.

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Pang, H. L. J., und T. G. F. Gray. „Fatigue Analysis of Unstress-Relieved Cruciform Welded Joints“. In Fracture of Engineering Materials and Structures, 639–44. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3650-1_94.

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Lilley, David M. J. „The Structure and Physical Chemistry of Cruciform Structures in Supercoiled DNA“. In Structure and Dynamics of Biopolymers, 112–36. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3619-5_7.

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Pettijohn, David E., Richard R. Sinden und Steven S. Broyles. „Cruciform Transitions Assayed Using a Psoralen Crosslinking Method: Applications to measurements of DNA torsional tension“. In Unusual DNA Structures, 103–14. New York, NY: Springer New York, 1988. http://dx.doi.org/10.1007/978-1-4612-3800-3_7.

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Smits, A., D. Lecompte, D. Van Hemelrijck, H. Sol und W. Van Paepegem. „Inverse Method for Parameter Determination of Biaxially Loaded Cruciform Composite Specimens“. In Experimental Analysis of Nano and Engineering Materials and Structures, 931–32. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6239-1_463.

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Lilley, D. M. J., K. M. Sullivan und A. I. H. Murchie. „The Extrusion of Cruciform Structures in Supercoiled DNA — Kinetics and Mechanisms“. In Nucleic Acids and Molecular Biology, 126–37. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-46596-3_7.

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Lamkanfi, E., A. Smits, W. Van Paepegem und D. Van Hemelrijck. „Application of Ultrasonic Phased Array for Nondestructive Detection of Damage in Biaxial Cruciform“. In Experimental Analysis of Nano and Engineering Materials and Structures, 941–42. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6239-1_468.

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Gower, M., R. Shaw und R. Mera. „Development of a Cruciform Specimen Geometry for the Characterisation of Biaxial Material Performance for Fibre Reinforced Plastics“. In Experimental Analysis of Nano and Engineering Materials and Structures, 937–38. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6239-1_466.

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Lilley, David M. J. „The Cruciform Extrusion Transition in Supercoiled DNA Molecules“. In Structure, Dynamics and Function of Biomolecules, 217–23. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-71705-5_46.

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Saharan, Govind Singh, Prithwi Raj Verma, Prabhu Dayal Meena und Arvind Kumar. „Fine Structures“. In White Rust of Crucifers: Biology, Ecology and Management, 189–92. New Delhi: Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-1792-3_11.

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Konferenzberichte zum Thema "Cruciform structures":

O'Claire, David E., und David M. Hesse. „Transmission Towers with Cruciform Legs“. In Electrical Transmission and Substation Structures Conference 2012. Reston, VA: American Society of Civil Engineers, 2012. http://dx.doi.org/10.1061/9780784412657.024.

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Mohanty, Subhasish, Aditi Chattopadhyay, Jun Wei und Pedro Peralta. „On-Line Structural Health Monitoring and Prognosis of a Biaxial Cruciform Specimen“. In 50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2009. http://dx.doi.org/10.2514/6.2009-2305.

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Ash, Jason, und Jeffry Welsh. „Biaxial Strength Measurements of IM7/977-2 Carbon/Epoxy Laminates Using Tabbed Cruciform Specimens“. In 45th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2004. http://dx.doi.org/10.2514/6.2004-1641.

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Rong, Jiaxin, und Li Zhou. „Design of flexible skin based on a mixed cruciform honeycomb“. In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, herausgegeben von Jerome P. Lynch. SPIE, 2017. http://dx.doi.org/10.1117/12.2258579.

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Mohanty, Subhasish, Aditi Chattopadhyay, Pedro Peralta und Dan Quech. „Fatigue damage prognosis of a cruciform structure under biaxial random and flight profile loading“. In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, herausgegeben von Peter J. Shull, Aaron A. Diaz und H. Felix Wu. SPIE, 2010. http://dx.doi.org/10.1117/12.848814.

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Borges Dinis, Pedro, und Dinar Camotim. „Post-Buckling Behaviour, Strength and DSM Design of Thin-Walled Cruciform Steel Columns“. In 10th International Conference on Advances in Steel Concrete Composite and Hybrid Structures. Singapore: Research Publishing Services, 2012. http://dx.doi.org/10.3850/978-981-07-2615-7_082.

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„PREDICTION OF SIGNIFICANT CRUCIFORM STRUCTURES FROM SEQUENCE IN TOPOLOGICALLY CONSTRAINED DNA - A Probabilistic Modelling Approach“. In International Conference on Bioinformatics Models, Methods and Algorithms. SciTePress - Science and and Technology Publications, 2012. http://dx.doi.org/10.5220/0003705701240130.

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Alam, Mohammad S., und Muhammad A. Wahab. „A New Approach for Modeling of Fatigue Crack Growth in Welded Cruciform and Curve T Joint Structures“. In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81535.

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A new approach for the simulation of fatigue crack growth in welded joint has been developed and the concept has been applied to welded cruciform and curve T-joints. The phenomena of crack propagation and interface debonding can be regarded as the formation of new surface. Thus, it is possible to model these problems by introducing the mechanism of surface formation. In the proposed method, the formation of new surface is represented by interface element based on the interface potential energy. The properties of this interface element represent the bonding strength of the material. As the cyclic load continues, the bonding strength decreases between the interacting surfaces and the crack propagates slowly. Based on this concept, an ANSYS code has been written for the simulation of crack propagation. Using this code, fatigue crack growth rate and fatigue crack propagation life of 2-D FEM models of welded cruciform and curve T-joints for different stress/load ratios have been analyzed and presented in this paper. The method is relatively simple compared to other conventional FEM method and save computer time significantly. The predicted results are compared with experimental results and good agreement has been achieved.

Yildirim, Halid Can, Gary B. Marquis und Per J. Haagensen. „Experimental Verification of HFMI Treatment of Large Structures“. In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-23764.

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Design recommendations for high frequency mechanical impact (HFMI)-treated welds have been proposed based on available experimental fatigue data of axially-loaded high strength steel specimens which include longitudinal, cruciform and butt welds. Test specimens were of a size appropriate for laboratory study. However, in reality, structures in civil, offshore and ship industries generally include large-scale and more complicated components, such as bridges, cranes, platforms, excavators etc. This paper presents a further validation of the design proposals by considering fatigue data sets which are obtained from large-scale components. The extracted fatigue data from the available literature includes bridge, crane and beam like components. In total, 65 published test results of weld details with various yield strengths (250 ≤ fy ≤ 725 MPa) and stress ratios (−1 ≤ R ≤ 0.56) are presented. All the data are found to be in good agreement with the previously-shown design curves.

Anvari, Majid, Øyvind Fagnastøl und Bernt J. Leira. „Assessment of Weld Fatigue by Effective Notch Stress Approach“. In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-42364.

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Applicability of different approaches, i.e. nominal stress-, structural hot spot- and effective notch stress approach, for fatigue assessment of welded structures has been discussed. The effective notch stress approach was validated for a cruciform fillet welded and fully penetration welded joint, according to DNV guideline [1]. The same fillet welded joint was further investigated for varying weld sizes. The results show that with changing weld size, there are considerable differences between calculated stresses, and specially calculated fatigue lives, when comparing with nominal stress approach. Further investigations revealed that there is a nonlinear relation between effective notch stress and weld sizes, while comparison of the notch stress and nominal stress approaches indicate that a linear relation is to be expected. Based on the established methodology for the cruciform joint, another joint, i.e. a knee plate located in a horizontal brace of a drilling vessel, was assessed for weld root fatigue. Based on the proposed equations and the linear relation found between the nominal- and the notch stress S-N curves, a weld size providing a longer fatigue life at the weld root, rather than that at the toe, was proposed.