Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 58 for “"applicator"”.
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Rectangular microstrip radiator for a multielement local hyperthermia applicator
… microstrip radiator for a hyperthermia applicator.
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A study of microwave TDFT applicator design for low power cancer ablation
… heating encountered with previously proposed applicator designs. This work investigates the efficacy of using low power ultra-wide band (UWB) microwave applicator in cancer ablation. A novel Tear Drop Flared tipped (TDFT) antenna was proposed as microwave applicator for treating focal …
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An Analysis of the Illinois Commercial and Public Pesticide Applicator and Operator Certification Training Program
… training programs for commercial and public applicators and operators have been conducted in Illinois, by agricultural specialists of the University of Illinois Extension Service since 1966. The purpose of the educational programs is to provide applicators and operators with information …
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Identifying perceptions associated with agricultural chemical use: Implications for pesticide applicator training programs in Illinois
… was found to exist between how pesticide applicators have perceived issues related to agricultural chemical use and what applicators have believed to be true about perceptions held by the public on similar issues. Stakeholders having rural orientations were perceived to be more inclined to …
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Design and Validation of a Prototype Collimation System with Reduced Applicator Weights for Elekta Electron Therapy Beams
… Infinity accelerators with significantly reduced applicator weights, while maintaining acceptable in-field beam flatness and out-of-field leakage dose. The design was restricted to 6-20 MeV beams for 6x6 to 25x25 cm2 applicators at 100 cm SSD with the MLCi2 treatment head. In Aim1, measured …
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Measured and calculated dose distributions in the “claws” – a specially designed gold applicator loaded with I-125 seeds
Introduction: The “Claws” is a unique gold applicator for whole-eye radiotherapy that was designed at Groote Schuur Hospital. It is used to treat retinoblastoma. Under general anaesthesia, a pericorneal ring is attached to the four extraocular muscles, and four legs, each loaded with I125 seeds, …
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Design and Analysis of a New Abrasive Blasting System for an Abrasive Applicator Utilized in a Novel Weed Control Method
… the unique design requirements of an abrasive applicator to be used in a novel, post-emergence, selective weed control method in organic cropping systems. Specifically, the desire to eliminate the pressurized reservoir and wear of the nozzle throat that plagues commercial pressure blast designs …
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Near-Field Focusing Phased Array for Hyperthermia Application
A conventional hyperthermia applicator is an electrically small antenna which produces a divergent beam. In this thesis, we propose a focused applicator made of phased arrays. The advantages of an array applicator are (i) smaller input power and less surface heating for achieving the same field …
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Operational radiation safety considerations during superficial x-ray treatment for veterinary applications
… 50, 70, and 100 kV x-ray for 9 different SRT-100 applicators. The exposure rates at the surface of solid water phantom (SWP) phantom ranged from 3.9 mR/hr for applicator #2 to 396 mR/hr for CB18 for 50 kV, from 41 mR/hr to 2,880 mR/hr for 70 kV, and from 235 mR/hr to 7,500 mR/hr, for 100 kV, …
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Inline disinfestation of canola seeds from red flour beetles using a 50-ohm RF technology
… L.) of 9 % moisture content (MC) in a tubular applicator with parallel electrodes. The heating characteristics of the bulk canola seeds was studied using the 50-ohm RF system and non-uniformity of the temperature distribution of bulk canola was observed. The hottest spot was observed at the …
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Improved Calculation and Display for Dose Distributions Associated With Intrauterine Radiotherapy.
… calculations associated with an intrauterine applicator. The program reconstructs the exact source positions from two orthogonal x-ray projections. The dosages delivered to reference points A and B are calculated. In addition, isodose curves are constructed on selected planes from which …
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Machbarkeitsstudie zur nicht-invasiven, CT-basierten Thermometrie während der perkutanen Radiofrequenzablation von Leberparenchym im In-vivo-Schweinemodell
… Parallel to the used bipolar needle-shaped RF applicator (CelonLabPower) with an active tip of 30 mm (Celon ProSurge T30) optical temperature probes (SFF-2m) were inserted into the liver with a fixed distance of 5, 10, 15 mm and in two pigs also with a distance of 20 mm to the RF applicator. …
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Fibre Modification for Concrete Reinforcement using a Novel Atmospheric Microwave Induced Plasma Torch (MIPT)
… jet at atmospheric pressure, a waveguide-based applicator at 5.8GHz was used. The system uses a microwave signal generator connected to a traveling wave tube to provide the required power. The applicator consists of a nozzle section and a tuning section to decrease the reflected power. Argon gas …
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Anhydrous ammonia in vegetable cropping
… pot and field trials using a small precision applicator based on the injection equipment used by Parr and Papendick (Parr and Papendick 1967). This work is followed by a study of root distribution using 32P and the uptake on anhydrous ammonia. A field experiment was set up using a large field …
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Analysis of Power Deposition Patterns and Ultrasonic Phased Arrays for Localized Hyperthermia
… of temperature distributions produced by a given applicator design.
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Dose intercomparisons between computer planning, in-vivo and phantom measurements for Iridium-192 HDR Brachytherapy
… from the thirty patients was used to reproduce applicator and in-vivo diode treatment setups in a water phantom. Radiation doses administered to the patients were replicated in the water phantom to measure the doses at marked dose reference positions.
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The Behaviour of the House Mouse (Mus Musculus L.) in Relation to the Development of a New Control Method Using Contact Rodenticides
… of a suitable formulation. 4. Design of an applicator to ensure optimal uptake of rodenticide. Experimental simulations of house mouse infestations in food storage premises were developed and found, by comparison with large scale field trials, to be a reliable test environment for contact …
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An ultrasound probe sheathing device : design, development, and evaluation
… a probe holder and cartridge-style, single-use applicator that returns high quality ultrasound images and sheaths ultrasound transducers 35% faster than the current technique with a decreased risk of breaking sterility. When tested by medical professionals, all participants preferred the new …
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