1,721,149 research outputs found
Experimental study of heating effects of 27.12 MHz diathermy unit on clay models for hyperthermia applications in cancer treatment
No full textThis project will focus on the experimental characterization of heating effects by 27.12 MHz Mettler Diathermy system on clay models for use in hyperthermia for cancer treatment. The project involves microwave applicators suitable for hyperthermia treatment of advanced cancer colli uteri in combination with ionizing radiation. The Mettler diathermy system is used to record the heating patterns in the dielectric lossy media. The eventual application of this study is to have variations in the diathermy unit using dielectric lossy materials which are very close to the biological tissue and observe its relation to the temperature rise in the dielectric media that is used. This project mainly concentrates on the focusing ability of the diathermy system to target the tumor area with minimal effect to the healthy tissues. The clay models were used in this project to study the effect of radiation. The experiment was done for hardening and non hardening clay and the temperature was noted. The maximum temperature we achieved was with non hardening clay when the area was heated to 82.630 F
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Report on organization and implementation of phase-I clinical trial of hyperthermia and radiation cancer treatments in India
No full textProject (M.S., Electrical and Electronic Engineering) -- California State University, Sacramento, 2010.This report details the different stages of the recently initiated Phase I clinical trial of a new modality of cancer treatment in India. The clinical trial involves the addition of hyperthermia or heat treatment to existing treatment techniques such as radiation or chemotherapy, with the aim to improving patient response. Earlier studies have showed that the combined protocols can double the patient response. The current trial involved 14 patients in a palliative mode of treatment, and the report covers the planning, organization, and carrying out of the clinical trials. Currently, the trial has been initiated at one cancer center in India, but will be extended to another center shortly.\ud
This report can be used as a base on how the hyperthermia treatment is conducted practically and also includes details about the procedure and protocol followed for hyperthermia treatment together with radiation and chemotherapy treatment. \ud
In this collaborative project, Krishna Ramya Cherukuri and Vijaya Chandra Yadav, individually contributed to the background research on hyperthermia treatment and its practical application in the clinical trial.\ud
Krishna Ramya Cherukuri did background research on hyperthermia treatment and its usage and in the selection of different kinds of equipment used in the treatment. \ud
Vijaya Chandra Yadav did research on practical clinical trials involving combined hyperthermia and radiation or chemotherapy protocols and developed recommendations regarding how the hyperthermia treatment should be implemented in India, taking into account the demographics and cancer spread in that country.Electrical and Electronic Engineerin
Experimental study of heating effects of 27.12 MHz diathermy unit on clay models for hyperthermia applications in cancer treatment
No full textProject (M.S., Electrical and Electronic Engineering) -- California State University, Sacramento, 2009.This project will focus on the experimental characterization of heating\ud
effects by 27.12 MHz Mettler Diathermy system on clay models for use in hyperthermia\ud
for cancer treatment. The project involves microwave applicators suitable for\ud
hyperthermia treatment of advanced cancer colli uteri in combination with ionizing\ud
radiation. The Mettler diathermy system is used to record the heating patterns in the\ud
dielectric lossy media. The eventual application of this study is to have variations in the\ud
diathermy unit using dielectric lossy materials which are very close to the biological\ud
tissue and observe its relation to the temperature rise in the dielectric media that is used.\ud
This project mainly concentrates on the focusing ability of the diathermy system to target\ud
the tumor area with minimal effect to the healthy tissues. The clay models were used in\ud
this project to study the effect of radiation. The experiment was done for hardening and\ud
non hardening clay and the temperature was noted. The maximum temperature we\ud
achieved was with non hardening clay when the area was heated to 82.630 F.Electrical and Electronic Engineerin
Report on organization and implementation of phase-I clinical trial of hyperthermia and radiation cancer treatments in India
No full textThis report details the different stages of the recently initiated Phase I clinical trial of a new modality of cancer treatment in India. The clinical trial involves the addition of hyperthermia or heat treatment to existing treatment techniques such as radiation or chemotherapy, with the aim to improving patient response. Earlier studies have showed that the combined protocols can double the patient response. The current trial involved 14 patients in a palliative mode of treatment, and the report covers the planning, organization, and carrying out of the clinical trials. Currently, the trial has been initiated at one cancer center in India, but will be extended to another center shortly. This report can be used as a base on how the hyperthermia treatment is conducted practically and also includes details about the procedure and protocol followed for hyperthermia treatment together with radiation and chemotherapy treatment. In this collaborative project, Krishna Ramya Cherukuri and Vijaya Chandra Yadav, individually contributed to the background research on hyperthermia treatment and its practical application in the clinical trial. Krishna Ramya Cherukuri did background research on hyperthermia treatment and its usage and in the selection of different kinds of equipment used in the treatment. Vijaya Chandra Yadav did research on practical clinical trials involving combined hyperthermia and radiation or chemotherapy protocols and developed recommendations regarding how the hyperthermia treatment should be implemented in India, taking into account the demographics and cancer spread in that country
Generalized analytic method for near-field reconstruction of antenna currents in microwave hyperthermia cancer treatment systems
No full textProject (M.S., Electrical and Electronic Engineering) -- California State University, Sacramento, 2010.Currently chemotherapy radiation and surgery are the standard treatments for cancer that are widely accepted and used. However, a fourth modality is emerging as an adjuvant tool against cancer. Hyperthermia treatment is currently used as an added form of treatment during radiation or chemotherapy, and works as a booster, sometimes even doubling the effects of these standard treatments.\ud
Hyperthermia treatment currently explored in this reference is done by exposing the cancer region to precisely controlled RF microwave radiation which treats the area. Our aim in this project is to write algorithms in MATLAB software to generate appropriate antenna currents for different geometries like planar, cylindrical and spherical, with the aim to focus at the desired tumor area. Several simulations were carried out to test the validity of the algorithms and results verified the accuracy.Electrical and Electronic Engineerin
Synthesis of unequally spaced antenna arrays for wideband applications in radio astronomy
No full textProject (M.S., Electrical and Electronic Engineering)-- California State University, Sacramento, 2010This project will focus on the design of wideband antenna arrays, which can operate in the 1-22 GHz band. The design process utilizes the principle of providing unequal spacing between adjacent elements of the array, which has the desired effect of significantly increasing the bandwidth of a default uniformly spaced array. This project will have applications such as radio astronomy. Both one-dimensional and two-dimensional array geometries will be considered for simulation.Electrical and Electronic Engineerin
Characterization of radio frequency emissions from the Smart Meter
No full textRecently, there has been significant public concern to RF exposure from Smart Meters. Utility companies have even provided Opt-Out options for consumers; however, the question still need to be answered is: Are Smart Meters emitting RF radiation within the prescribed FCC guidelines? Several experimental and simulation studies have been performed by the utility companies, and also supervisory agencies like EPRI, and the CPUC to determine the extent of RF radiation from residential Smart meters. The main goal of this project is to carry out an independent study of RF radiation from residential and workplace Smart Meters, and to compare it with FCC standard, whether it is within the permissible limit or not. The location where this study was performed was at the California State University campus, and also in a residential meter cluster in Folsom. The results give us a better understanding of RF radiation from Smart Meters, and are a valuable tool to planning future Smart meter capabilities such as Home Area Networks (HANs
Design of broadband microstrip balun in the 6 gigahertz wireless band
No full textThis thesis investigates wideband balun power dividers (WBPD) and wideband balun couplers (WBC) implemented on microstrip. Current wideband microstrip circuits are rather large due to their dependence on quarter wavelengths. Microstrip circuits become especially large when they operate at frequencies under 10 GHz due to their quarter wavelength requirement. This has created a demand for wideband microstrip circuits that operate under 10 GHz and are smaller than those currently available. It is therefore desired to implement a WBPD or WBC on microstrip in a smaller form, where the circuit is under a quarter wavelength long. Agilent's Advanced Design System (ADS) software, version 2012.08, was used for this thesis to verify theory and simulate designs. The objective is to create a WBPD or WBC that is small in size and operates under 10 GHz over a large bandwidth, ideally, the bandwidth would be over 10 GHz. To keep manufacturing costs low, it is desired to implement a WBPD or WBC on microstrip without vias or other circuit elements. This thesis determines what is necessary to implement a WBPD and WBC on microstrip. A WBPD requires a minimum of two resistors and two microstip gaps to achieve a balanced output, and that the maximum gain between any two ports is -4.77dB. A WBC requires a dielectric with a large relative permittivity and thickness. A WBC also requires the even and odd mode characteristic impedances to be extreme opposites; one is very large and the other is very small
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