Search Results - "Joines, W T"

Design and analysis of annular antenna arrays with different reflectors by Shi, G, Joines, W T

“…The design and performance of annular antenna arrays with reflectors is presented. Arrays with three shapes of reflectors are analysed and simulated. These…”
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Air-gap reluctance and inductance calculations for magnetic circuits using a Schwarz-Christoffel transformation by Balakrishnan, A., Joines, W.T., Wilson, T.G.

“…A method for calculating the reluctance of air gaps in magnetic circuits making use of a Schwarz-Christoffel transformation is described. The method is applied…”
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Variations of focal regions versus numbers and positions of sources in two-dimensional media by Henke, F M, Joines, W T, Samulski, T V

“…This paper explores the behaviour of the primary and secondary hot spots in homogeneous and two-dimensional inhomogeneous medium. Circular arrays are…”
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On the accuracy of noninvasive thermometry using molecular diffusion magnetic resonance imaging by Zhang, Y, Samulski, T V, Joines, W T, Mattiello, J, Levin, R L, LeBihan, D

“…Temperature measurement using magnetic resonance imaging (MRI) of water self-diffusion is investigated. Diffusion images and derived temperatures are obtained…”
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A role for the magnetic field in the radiation-induced efflux of calcium ions from brain tissue in vitro by Blackman, C F, Benane, S G, Rabinowitz, J R, House, D E, Joines, W T

“…Two independent laboratories have demonstrated that electromagnetic radiation at specific frequencies can cause a change in the efflux of calcium ions from…”
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Effects of ELF (1-120 Hz) and modulated (50 Hz) RF fields on the efflux of calcium ions from brain tissue in vitro by Blackman, C F, Benane, S G, House, D E, Joines, W T

“…We have previously shown that 16-Hz, sinusoidal electromagnetic fields can cause enhanced efflux of calcium ions from chick brain tissue, in vitro, in two…”
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Active microwave imaging. I. 2-D forward and inverse scattering methods by Qing Huo Liu, Zhong Qing Zhang, Wang, T.T., Bryan, J.A., Ybarra, G.A., Nolte, L.W., Joines, W.T.

“…Active microwave imaging (MWI) for the detection of breast tumors is an emerging technique to complement existing X-ray mammography. The potential advantages…”
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Dielectric slab-loaded resonant cavity for applications requiring enhanced field uniformity by Bernhard, J.T., Joines, W.T.

“…This paper introduces and analyzes a rectangular resonant structure that provides an alternative to the multimode resonant cavity in applications requiring…”
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The measured electrical properties of normal and malignant human tissues from 50 to 900 MHz by Joines, W T, Zhang, Y, Li, C, Jirtle, R L

“…The electrical conductivity and relative permittivity of malignant and normal human tissues were measured at frequencies from 50 to 900 MHz. The measurements…”
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Microwave breast imaging: 3-D forward scattering simulation by Zhong Qing Zhang, Qing Huo Liu, Chunjiang Xiao, Ward, E., Ybarra, G., Joines, W.T.

“…Active microwave imaging (MWI) is emerging as a promising technique for the detection of biomedical anomalies such as breast cancer because of the high…”
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Design of Yagi-Uda antennas using genetic algorithms by Jones, E.A., Joines, W.T.

“…A method of using genetic algorithms to optimize the element spacing and lengths of Yagi-Uda antennas is presented. A method of moments code, NEC2, performs…”
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Immunomagnetic purging of breast cancer from bone marrow for autologous transplantation by Shpall, E J, Bast, Jr, R C, Joines, W T, Jones, R B, Anderson, I, Johnston, C, Eggleston, S, Tepperberg, M, Edwards, S, Peters, W P

“…Intensive chemotherapy with autologous bone marrow transplantation is a promising approach for the treatment of breast cancer, provided that clonogenic tumor…”
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Multiple power-density windows and their possible origin by Blackman, C F, Kinney, L S, House, D E, Joines, W T

“…We have previously reported that in vitro exposure of chick forebrain tissue to 50-MHz radiofrequency (RF) electromagnetic radiation, amplitude modulated (AM)…”
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Prediction of heating patterns of a microwave interstitial antenna array at various insertion depths by Zhang, Y, Joines, W T, Oleson, J R

“…Measurements made on the interstitial microwave antennas used for hyperthermia cancer therapy indicate that the heating patterns vary with the insertion depths…”
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Theoretical and measured electric field distributions within an annular phased array: Consideration of source antennas by Zhang, Y., Joines, W.T., Jirtle, R.L., Samulski, T.V.

“…A detailed calculation of sources and electric fields associated with a prototype annular phased array for clinical hyperthermia is presented. Two antenna…”
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Modelling aperture antennas in the near- and far-field regions using subarrays of equivalent uniformly illuminated apertures by Takemoto-Hambleton, R M, Zhang, Y, Joines, W T

“…This paper develops and presents an application of Huygen's principle herein referred to as the equivalent uniformly illuminated aperture method (EUAM). This…”
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Frequency-Dependent Absorption of Electromagnetic Energy in Biological Tissue by Joines, William T.

“…The frequency-dependent absorption of electromagnetic energy in biological tissue is illustrated by use of the Debye equations, model calculations for…”
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The calculated and measured temperature distribution of a phased interstitial antenna array (invasive applicators) by Zhang, Y., Joines, W.T., Oleson, J.R.

“…The power deposition pattern of four antennas, positioned on the corners of a 2-cm square array with different driving phases, is computed under the assumption…”
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Heating patterns generated by phase modulation of a hexagonal array of interstitial antennas by Zhang, Y., Joines, W.T., Oleson, J.R.

“…An array of six interstitial microwave antennas used for hyperthermia cancer treatment is investigated. The purpose is to generate both uniform and controlled…”
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Traveling-wave amplifiers with prescribed frequency response by Palmer, W.D., Joines, W.T.

“…Microwave transistor amplifier combinations that have controlled frequency response over a specified bandwidth were designed. Theoretical analysis of such an…”
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