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16 results for “torsion”
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Research ArticleOpen accessEvery word in the titleEquivalent Torsional-Warping Stiffness of Cores with Thin-Walled Open Cross-Section Using the Vlasov Torsion TheoryTriantafyllos Konstantinos MakariosIn order to calculate the equivalent torsional-warping stiffness of the Reinforced Concrete (RC) cores that have thin-walled open cross-section, a new analytical methodology, which combines the Vlasov torsion theory with the Bernoulli bending theory, is presented herein. As the basis of the calculations, we use the principal elastic reference system of the core from this we consider that is known. … …American Journal of Engineering and Applied Sciences, Vol. 16, Issue 2 · 23 May 2023 · 6,401 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleSTRINGENT LIMITS FOR THE MAGNETIC FIELD FROM EARLY UNIVERSE DYNAMOS IN RF2 COSMOLOGY WITH TORSIONL. C. Garcia de AndradeBamba et al. (2012) have obtained cosmological magnetic fields in teleparallel torsion theories of gravity that are not compatible with galactic dynamos. This result agrees with previous ones obtained by the author which shows Garcia de Andrade (1999) that anti-dynamo generalised theorem to torsion theories forbides such kind of dynamos to explain galactic magnetic fields of the order of µG. … …Physics International, Vol. 5, Issue 1 · 27 Mar 2014 · 7,854 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDECOUPLING BETWEEN TORSION AND MAGNETIC FIELDS IN BOUNCING COSMOLOGY AND GALACTIC DYNAMO SEEDSL. C. Garcia de Andrade, A. FerrandezRecently Salim et al. (2007), have shown that galactic dynamo seeds can be possibly attainable in bouncing cosmological models with QED Lagrangeans. In this study we generalise their result by include torsion of spacetime in bouncing cosmology. It is shown that by considering a semi-minimal photon-torsion coupling and a Lagrangean of the type RF2 it is possible to find a … …Physics International, Vol. 5, Issue 1 · 27 Mar 2014 · 7,925 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Ovario-Protective Effect of Erythropoietin against Oxidative Damage Associated with Reperfusion Following Ovarian Torsion in RatSayyah-Melli Manizheh, Kazemi-Shishvan Maryamalsadat, Solaimani-Rad Jafar et al.Problem statement: To show the effect of recombinant Erythropoietin (rhEPO) on the ovarian viability and histology in the twisted ischemic ovaries in rats, followed by detorsion. Approach: An experimental study was conducted in primate clinic of the School of Medicine, Tabriz University of Medical Sciences from Dec. 2008 to Apr. 2009. Forty, 4 month old Wistar rats are cased in … …American Journal of Animal and Veterinary Sciences, Vol. 6, Issue 1 · 26 Apr 2011 · 7,846 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Torsion on Externally Prestressed Segmental Concrete Bridge with Shear KeyM. A. Algorafi, A. A.A. Ali, M. S. Jaafar et al.Externally Prestressed Segmental (EPS) concrete box sections are widely used in the construction of bridge structures today. EPS concept has become an attractive tool for rehabilitation and strengthening of existing bridges which have insufficient strength and/or excessive deflection and cracking. Problem statement: EPS bridges are affected by combined stresses (bending, shear, normal, and torsional) at the joint interface between the … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 1 · 31 Mar 2009 · 8,428 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDesign of Multi-Layered Laminated Glass Beams in Lateral-Torsional BucklingGabriel Neves Alves FerreiraThis article proposes a methodology for the structural design of multi-layered glass beams considering lateral-torsional buckling. The basis is the use of two separate effective thicknesses to determine flexural and torsional rigidities, based respectively on the Enhanced Effective Thickness (EET) and sandwich theory. Analytical formulae are then used to calculate the elastic critical bending moment and a design curve is … …International Journal of Structural Glass and Advanced Materials Research, Vol. 6, Issue 1 · 25 Oct 2022 · 9,804 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEffect of Earthquakes on Some Kind of BuildingsJ. Alberto Escobar S., J. Antonio Mendoza, Roberto Gómez M.A new method that simplifies the current static seismic torsion design procedure for buildings is proposed. Distribution of the shear forces among the storey-resistant elements designed by torsion and of the factors which affect the design eccentricity, specially accidental eccentricity, are studied. It is demonstrated that the effect of accidental eccentricity is always additive for the structural elements. There is … …American Journal of Environmental Sciences, Vol. 4, Issue 3 · 30 Jun 2008 · 6,347 accessesView PDFCite
Research ArticleOpen accessIn the abstractCase Study on the Effects of Plan Irregularities on Seismic Performance of StructuresEduardo Flores, Tadeh ZirakianGeometric configurations, such as large openings, re-entrant corners, and discontinuity in diaphragms, are very common in architectural design but are seen as undesirable for structural performance during earthquakes. The lateral systems in a structure resist the strong forces induced during an earthquake, preventing damage or collapse of the structure. If these systems fail, the structural integrity of the building may … …American Journal of Engineering and Applied Sciences, Vol. 17, Issue 3 · 21 Jul 2024 · 5,723 accessesView PDFCite
Literature ReviewOpen accessIn the abstractOzone Therapy: Overview of its Potential Utility in Male ReproductionZaher Merhi, Ali Bazzi, Rajean Moseley-LaRue et al.Ozone (O3), a highly water-soluble inorganic molecule, is a gas made of three atoms of oxygen (O) with a cyclic structure. Ozone can be produced by medical generators from pure oxygen after passing through a high voltage gradient. Ozone therapy (OT) can be given in medical practice via several routes that include transdermal, intramuscular, rectal, nasal, oral, vaginal, intravenous, intra-arterial, … …American Journal of Immunology, Vol. 14, Issue 1 · 4 Jan 2019 · 9,586 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Dynamics of the Planar Cinematic Balanced Chain at the Plan Module 3RRelly Victoria Petrescu, Raffaella Aversa, Antonio Apicella, Florian Ion Tiberiu PetrescuIn some previous papers, the mechatronic module 3R, plan, is a basic module on which the complete, geometric, cinematic, dynamic calculation of the anthropomorphic robots, the most used today's industrial robots, is built. The importance of the study of anthropomorphic robots has also been signaled, being today the most widespread robots worldwide, due to its simple design, construction, implementation, operation … …Journal of Mechatronics and Robotics, Vol. 2, Issue 1 · 22 Jan 2018 · 7,111 accessesView PDFCite