نتایج جستجو برای: inelastic torsion

تعداد نتایج: 31813  

Journal: :Journal of Structural and Construction Engineering (Transactions of AIJ) 1992

Journal: :Proceedings in applied mathematics & mechanics 2023

Cables are slender structures with a complex geometry, that can undergo large deformations during their installation or in dynamic environments. In combination inner structure they pose challenging problem for finite element simulations. this article simplified approach is presented to model cables by using an effective material and homogeneous cross-section, which anisotropic the elastic inela...

Background: Left ventricular torsion is one of the most important biomechanical parameters of heart that routinely is measured in short axis view.  A review of the literature has indicated that assessment of left ventricular torsion in short axis view has some limitations. In the present study, we evaluated whether torsion angle assessment in long axis view can be used as a diagnostic biomechan...

2001
Ferhun C. Caner Zdeněk P. Bažant Jan Červenka

The inelastic behavior of concrete for highly nonproportional loading paths with rotating principal stress axes is studied. Test cylinders are first loaded in compression under uniaxial stress and then torsion is applied at constant axial displacement. Proportional compressive-torsional loading tests are also carried out for comparison. The tests demonstrate that the response of concrete for lo...

2017
Lorenzo Benedetti Miguel Cervera Michele Chiumenti

The testing of mode III and mixed mode failure is every so often encountered in the dedicated literature of mechanical characterization of brittle and quasi-brittle materials. In this work, the application of the mixed strain displacement ε − u finite element formulation to three examples involving skew notched beams is presented. The use of this FE technology is effective in problems involving...

Bahar Ashjaei Maliheh Kadivar Sharareh Anari

The testicular torsion which is typically seen in prepuberty is very rare in the early neonatal period; prenatal diagnosis is difficult. Herein, we report a five day-old male neonate with swelling and erythema of the right scrotum.  Following Doppler ultrasound suggestive of testicular torsion, surgical exploration was undertaken. There was gangrene of the right testis with discoloration and ne...

Journal: :Biopolymers 2006
L A E Batista de Carvalho M Paula M Marques John Tomkinson

Ketoprofen (3-benzoyl-alpha-methylbenzeneacetic acid) is a widely used nonsteroidal anti-inflammatory drug (NSAID), always administered in the form of drug-excipient physical mixtures (PMs). The occurrence of possible interactions between ketoprofen and two commonly used excipients-lactose (LAC) and polyvinylpyrrolidone (PVP)-was evaluated, through vibrational spectroscopy techniques [both Rama...

Journal: :iranian journal of medical physics 0
zahra ojaghi-haghighi echocardiography research center, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, iran azin alizadehasl echocardiography research center, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, iran atoosa mostafavi echocardiography research center, shariati medical and research center, tehran university of medical sciences, tehran, iran hassan moladoust cardiovascular research center, school of medicine, guilan university of medical sciences, rasht, iran nasim naderi department of heart failure and transplantation, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, iran majid maleki echocardiography research center, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, iran

introduction left ventricular (lv) twist is believed to store potential energy and plays an important role in generating diastolic suction. recent advances in echocardiography techniques have allowed quantification of lv twist. the aim of the present study was to compare lv twist and torsion in healthy human subjects determined by velocity vector imaging (vvi) and tissue doppler imaging (tdi) a...

Introduction: The aim was to investigate the protective effect of the Syzygium aromaticum extract on damaged tissues and the oxidative stress after testicular torsion. Methods: Rats were randomly divided into a control group subjected to a sham procedure and three treatment groups comprising testicular torsion followed by detorsion (TD), testicular torsion detorsion followed by the tre...

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