Results 251 to 260 of about 5,924,380 (291)

Primary glioma: diagnosis with magnetic resonance imaging

Journal of Computed Tomography, 1986
Seventeen 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, V M, Runge, J H, Allen, C L, Partain, A E, James   +4 more
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Quenching of primary resonance by a superharmonic resonance

Journal of Sound and Vibration, 1984
The 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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Magnetic resonance imaging of primary breast lymphoma

La radiologia medica, 2009
Primary 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, L. Preda, G. Villa, S. Brambilla, G. Pruneri, A. Alietti, E. Cassano, G. Martinelli, M. Bellomi   +8 more
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The primary resonance of laminated piezoelectric rectangular plates

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2009
Based on Hamilton's principle and the Rayleigh-Ritz method, a model of a nonlinear dynamic laminated piezoelectric rectangular plate was established, and the governing equations were derived and solved for both the thin-plate and thick-plate models.
Shuai, Zhao, Zhifei, Shi, Hongjun, Xiang
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Characterizing the primary resonator in the cochlea

The Journal of the Acoustical Society of America
The cochlear traveling waves are explained by a bank of independent resonators coupled longitudinally by lymphatic fluids. Many cochlear models require at least two resonators to account for observed responses. To investigate the resonators in the cochlea, we used high-resolution optical coherence tomography to measure 2-D vibration patterns of the ...
Wei-Ching Lin, Anes Macic, Jong-Hoon Nam
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Magnetic resonance imaging of primary vaginal carcinoma

Clinical Radiology, 2007
To 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, N, Dugar, S E, Davidson, B M, Carrington   +3 more
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Tuning the primary resonances of a micro resonator, using piezoelectric actuation

Nonlinear Dynamics, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Azizi, Saber, Ghazavi, Mohammad Reza, Rezazadeh, Ghader, Ahmadian, Iman, Cetinkaya, Cetin   +4 more
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Dynamic Analysis of MEMS Resonators Under Primary-Resonance Excitation

Volume 1: 20th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C, 2005
We present a dynamic analysis and simulation of electrically actuated microelectromechanical systems (MEMS) resonators under primary-resonance excitation. We use a shooting technique, perturbation techniques, and long-time integration of the equation of motion to investigate the global dynamics of the resonators.
Ali H. Nayfeh, Mohammad I. Younis, Eihab M. Abdel-Rahman   +2 more
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MAGNETIC RESONANCE IMAGING OF PRIMARY SKELETAL NEOPLASMS

Radiologic Clinics of North America, 1993
The primary role of magnetic resonance (MR) imaging of skeletal neoplasms is that of staging. Understanding the staging process and selection of the proper imaging planes and pulse sequences is essential for proper staging. To date, image features are not specific for histologic type. In addition, there are still pitfalls with MR imaging for evaluating
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Dynamic evolution of a primary resonance MEMS resonator under prebuckling pattern

Nonlinear Dynamics, 2018
This paper analytically investigates the dynamic evolution of the primary frequency response of a prebuckling microbeam-based resonator with $$\hbox {Z}_{2}$$ symmetry.
Jianxin Han, Gang Jin, Qichang Zhang, Wei Wang, Baizhou Li, Houjun Qi, Jingjing Feng   +6 more
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