Results 261 to 270 of about 220,281 (307)

MR Imaging of Pathologic Abdominal Fluid Collections

Journal of Computer Assisted Tomography, 1986
A retrospective comparison was made of the capability of magnetic resonance (MR) imaging and CT to display and characterize pathologic abdominal fluid collections. Fluid collections in 41 patients were analyzed: ascites (seven patients), hematoma (five), pancreatic pseudocyst (four), biloma (two), abscess (four), simple renal cyst (nine), hemorrhagic ...
S D, Wall, H, Hricak, G D, Bailey, R K, Kerlan, H I, Goldberg, C B, Higgins   +5 more
openaire   +2 more sources

MR Evaluation of Pulmonary Interstitial and Intravascular Fluids

Investigative Radiology, 1986
Serial dilutions of sheep plasma and red blood cells were made yielding blood samples of various hematocrits (Hcts). These samples were studied at bore temperature (34 degrees C) in a 0.25 T pulsed NMR analyzer for differences in T1 and T2. An inverse relationship between Hct and T1 was demonstrated (P less than .001); no change was detected in T2 with
G T, Podgorski, F E, Carroll, R E, Parker   +2 more
openaire   +2 more sources

MR imaging of model fluid velocity profiles

Magnetic Resonance Imaging, 1989
A projection MR technique for imaging the velocity profiles of moving fluids has been applied to various steady flow models designed to simulate a variety of flow conditions. From such profiles can be readily deduced peak velocities, volume flow rates, information concerning the degree of flow development, features such as flow separation, and ...
K A, Kraft, P P, Fatouros, D Y, Fei, S E, Rittgers, P R, Kishore   +4 more
openaire   +2 more sources

Development of fast response MR-fluid actuator

Proceedings of the 41st SICE Annual Conference. SICE 2002., 2003
Magnetorheological (MR) fluids are materials that change their rheological behavior by an applied magnetic field. We have developed MR-fluid actuator. In this paper, we investigate the dynamic characteristics of the MR-fluid actuator and aim to improve the response.
Takesue, Naoyuki, Kiyota, Yuuki, Furusho, Junji   +2 more
openaire   +1 more source

Experimental Analysis of MR Fluid by Magneto-Rheological (MR) Damper

Applied Mechanics and Materials, 2015
Magneto-rheological fluids belong to a group of non-Newtonian fluids, and represent a group of purely-viscous fluids with the controllability of their properties by means of a magnetic field. In the present work, MR damper setup has designed and fabricated.
P. Thirupathi, Perumalla Janaki Ramulu, S. Venukumar, Peddabavi Saikiran Reddy, B. Krishna Reddy, Sirish Battacharya   +5 more
openaire   +1 more source

MR fluid, foam and elastomer devices

Mechatronics, 2000
Abstract Magnetorheological (MR) fluids, foams and elastomers comprise a class of smart materials whose rheological properties may be controlled by the application of an external magnetic field. MR fluids are liquids whose flow or shear properties are easily controlled to enable a variety of unique torque transfer or vibration control devices.
J.David Carlson, Mark R Jolly
openaire   +1 more source

In-line monitoring of (MR) fluid properties

Journal of Magnetism and Magnetic Materials, 2015
Abstract Proper functionality of devices and processes based on (MR) fluids greatly depends, along with other factors, on stability of fluid characteristics such as concentration of magnetic particles and magnetic properties of the particles. The concentration of magnetic particles may change due to evaporation or leakage of carrier fluid, as well as
William Kordonski, Sergei Gorodkin, Ray Behlok   +2 more
openaire   +1 more source

Low-Cost MR Fluid Sponge Devices

Journal of Intelligent Material Systems and Structures, 1999
A variety of robust, high-strength, MR fluids and devices that enable the benefits of controllable fluid technology are now commercially available. Commercial, mass-produced devices include rotary brakes for use in exercise equipment, real-time controllable vibration dampers for truck seats and adjustable linear shock absorbers for racing cars ...
openaire   +1 more source

Temperature stability and durability of MR fluids

SPIE Proceedings, 2012
Temperature stability and durability of magnetorheological fluids are important for engineering application. The damper with magnetorheological fluids were put in environment of -40°C to 130°C and the forces were measured under different currents. Durability was evaluated by performance experiments of 2×10 6 , 3.5×10 6 ,and 5×10 6 cycles.
Ping Zhang, Long Tang, En Yue, Shun-An Luo, Guang-ming Zhao   +4 more
openaire   +1 more source

MR Fluid Sponge Materials and Devices

Adaptive Structures and Material Systems, 2000
Abstract Stable, high-strength, magnetorheological (MR) fluids and devices such as rotary brakes and linear vibration dampers that enable the benefits of controllable fluid technology are now commercially available. Recently, a new way of using MR fluids in which the fluid is contained in an absorbent matrix has been developed.
J. David Carlson, Michael J. Chrzan
openaire   +1 more source