Results 201 to 210 of about 1,384,680 (234)
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Magnetic Resonance Imaging in Primary Amyloidosis
Acta Radiologica, 1987Twelve patients with primary amyloidosis (AL) were investigated with magnetic resonance imaging (MRI). In 9 patients an abnormal thickening of the heart walls was present and in 2 macroglossia was found at MRI. T1 was significantly increased in liver (p<0.05) and subcutaneous fat (p<0.01) while it was decreased in the spleen (p<0.05).
L, Benson +6 more
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Magnetic Resonance Imaging of Primary Cardiomyopathies
Journal of Computer Assisted Tomography, 2003Cardiomyopathies are diseases of the myocardium of unknown etiology associated with cardiac dysfunction. On the grounds of their morphology and pathophysiology, primary or idiopathic cardiomyopathies may be classified into a number of disorders; namely, hypertrophic cardiomyopathy, arrhythmogenic right ventricular cardiomyopathy, dilated cardiomyopathy,
Rafaela, Soler +4 more
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Nonlinear Dynamics, 2014
An approach is presented to investigate the nonlinear vibration of stiffened plates. A stiffened plate is divided into one plate and some stiffeners, with the plate considered to be geometrically nonlinear, and the stiffeners taken as geometrically nonlinear Euler beams.
Niu-Jing Ma, Rong-Hui Wang, Qiang Han
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An approach is presented to investigate the nonlinear vibration of stiffened plates. A stiffened plate is divided into one plate and some stiffeners, with the plate considered to be geometrically nonlinear, and the stiffeners taken as geometrically nonlinear Euler beams.
Niu-Jing Ma, Rong-Hui Wang, Qiang Han
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Primary resonance of piezoelectric resonators
1996 IEEE Ultrasonics Symposium. Proceedings, 2002It is found that the nonlinear behavior of piezoelectric resonators is more complicated than that predicted by previous theories. Actually the resonators work as parametrically excited vibration systems. Mode-coupled equations are obtained by means of the boundary integration. The method of multiple scales is used to solve the equations.
X.H. Li, W.H. Jiang, Y.A. Shui
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Nonlinear Primary Resonances of a Floating Crane
Meccanica, 2003zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ellermann, Katrin +2 more
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Primary glioma: diagnosis with magnetic resonance imaging
Journal of Computed Tomography, 1986Seventeen patients with surgically documented primary glial-origin brain tumors were evaluated by magnetic resonance imaging and high-resolution computed tomography. The exclusion of CT ring-enhancing lesions directed the focus of this study toward lower grade tumors that were more difficult to diagnose. The computed tomography abnormalities were often
A C, Price +4 more
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Proton magnetic resonance spectroscopy in primary blepharospasm
Neurology, 1998Single-volume proton magnetic resonance spectroscopy, localized to basal ganglia, was carried out in 10 patients with primary blepharospasm (PB) to assess the levels of N-acetyl aspartate (NAA), creatine-phosphocreatine, and choline-containing compounds. NAA was reduced significantly in patients compared with control subjects.
Federico F +8 more
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Magnetic resonance imaging of primary breast lymphoma
La radiologia medica, 2009Primary lymphomas of the breast (PBNHL) are uncommon. Magnetic resonance imaging (MRI) features of these malignancies can be relevant in establishing the extent of disease and planning the appropriate therapeutic strategy, usually represented by chemo- and radiotherapy, rather than surgery.
S. Rizzo +8 more
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Magnetic resonance imaging of primary vaginal carcinoma
Clinical Radiology, 2007To describe the magnetic resonance imaging (MRI) features of vaginal carcinoma and to suggest a role for MRI in its management.Twenty-five patients with primary vaginal carcinoma treated at our institution between 1996 and 2005 were included in the study.
M B, Taylor +3 more
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Quenching of primary resonance by a superharmonic resonance
Journal of Sound and Vibration, 1984The author examines the reduction or enhancement of the response of a single-degree of freedom system to a primary resonant excitation by the addition of another resonant excitation. As an example, the case of superharmonic excitation is considered. A single-deggree-of-freedom system with quadratic and cubic nonlinearities is considered.
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