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 22 for “"Helio"”.
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Simple y doble ionización de helio por impacto de electrones
… Generalizadas (GSF) a la doble ionización de Helio por impacto de electrones (e, 3e). Este sería, estrictamente, un problema de cuatro cuerpos, pero en el régimen de proyectiles rápidos el mismo puede reducirse a uno de tres. Hasta el día de la fecha este problema continúa sin estar …
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A real-time ink correction module for Helio-engraving process
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1981.
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Stabilization and Control of a Quad-Rotor Micro-UAV Using Vision Sensors
… of obstacles (walls, doorways, desks). The Helio-copter, an indoor quad-rotor platform that utilizes a compact FPGA board called Helios has been developed in the Robotic Vision Lab at Brigham Young University. Helios allows researchers to perform on-board vision processing and feature …
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Real-Time Implementation of Vision Algorithm for Control, Stabilization, and Target Tracking for a Hovering Micro-UAV
… vision and control system is composed of a Helios FPGA board, an Autonomous Vehicle Toolkit daughterboard, and a Kestrel Autopilot. The resulting platform is referred to as the Helio-copter. An efficient algorithm to detect, correlate, and track features in a scene and estimate attitude …
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Estenosis de vías aéreas superiores
… curvas flujo-volumen respirando aire y mezcla de helio-oxígeno, estudio de la difusión pulmonar y de gases en sangre arterial, tanto en situación basal como tras esfuerzo, respirando con y sin resistencia añadidas en la boca de calibre decreciente, con el objeto de valorar las repercusiones …
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Aplicación de la teoría de la semejanza a los motores de ciclo Stirling
… de accionamiento usuales, con hidrógeno, helio o aire como fluidos de trabajo.
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Os anos 60: Antonio Dias, uma poética entre o bem e o mal. A história de uma passagem na arte brasileira
… the experience and the observation of the artist Helio Oiticica, who considered Antonio Dias’ work a "Note over the unpredictable death", the turning point of the artistic process which happened during the sixties. Thus, the study of Antonio Dias’ work, developed throughout the essay, intends to …
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Modelo atomístico de producción y acumulación de daño en hierro y en vanadio
… irradiación es acompañada por la producción de helio. En los futuros reactores de fusión, se esperan flujos de alrededor de 20 dpa/año y una producción de helio de unas 100 appm anuales. Estas condiciones extremas supondrían la aparición de los fenómenos anteriormente expuestos y el inmediato …
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Alterações fisiológicas e bioquímicas em sementes de girassol submetidas ao estresse hídrico e à deterioração
… sementes de dois lotes de girassol da cultivar Helio 253, fornecidas pela empresa HELIAGRO. As sementes foram submetidas aos testes de germinação e vigor para caracterização dos lotes. Em seguida foram submetidas aos tratamentos de estresse hídrico nos potenciais 0,0; -0,2; -0,4; -0,6 e -0,8 e …
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The Archaic Makes the Avant-garde. Experimental Practice and Primordial Image. Reading the Brazilian Post-neoconcrete and the Japanese Gutai Artists Through Mircea Eliade and Carl Gustav Jung.
… Post-Neoconcrete artists Lygia Clark and Helio Oiticica, and of the Japanese Gutai group. These artists adopted a concrete ludic relationship between the body and the material; their empirical processes preceded and dispensed theoretical consideration. As a result, their practice and work …
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The role of 5-aminolevulinic acid (5-ALA) and sleep
Objective: To determine if there is a relationship between the administration of the dietary supplement containing 5-Aminolevulinic Acid (5-ALA) and sleep. Methods: A double-blind, randomized parallel-group study was conducted. It was a 4 month study of 40 participants between the ages of 40 and …
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Sequência de ossificação craniana de Aparasphenodon brunoi Miranda-Ribeiro, 1920, com comentários sobre o condrocrânio e o desenvolvimento da ornamentação óssea (Amphibia, Anura, Hylidae)
The development of cranial bones of Aparasphenodon brunoi Miranda -Ribeiro, 1920 was studied by the examination of tadpoles, froglets and juveniles, cleared and alcian blue - alizarin stained. The animals were staged using Gosner (1960) for tadpoles, and the extension and degree of cranial …
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Um algoritmo de ordem superior para a integração direta das equações da dinâmica estrutural
In this work an algorithm for the direct integration of the equation of motion of structural systems based on the cubis interpolation of the inertia forces is studied. The algorithm is conditionally stable and uses an iterative procedure. The spatial discretization is accomplished by the Finite …
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Bosonization and the many-body problem
In this thesis the method of bosonization of fermionic many-body systems in any number of dimensions is developed. After an introduction to the problem in chapter 1 and to the method of bosonization in chapter 2 (with its application to the non-interacting problem) the Fermi liquid behavior of …
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Elucidación de la auto-organización de la proteína gliadina y su péptido 33-mer in vitro
… resolvió mejor utilizando un microscopio de ion Helio, detectando además de las estructuras mencionadas anteriormente, de nano-cilindros, los cuales se proponen como intermediarios en la formación de las fibras detectadas. La capacidad de formación de nano-estructuras de variadas morfologías de …
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Desarrollo de metodologías de cuantificación de compuestos orgánicos basadas en dilución isotópica en línea de carbono-13 y espectrometría de masas
… flujo constante de trazador (13CO2 disuelto en helio) y una válvula de 6 vías que posibilitaba dirigir la salida de la columna bien hacia la interfase de combustión, o bien directamente a la fuente de ionización, permitiendo así utilizar el instrumento como un GC-MS convencional. Se evaluaron …
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The informal sector’s contribution to the economic wellbeing of people in Timor-Leste
It is widely believed that the informal sector is growing in the modern global economy. When studying who occupies this informal sector and the nature of their business, the universal tendency is to describe the informal sector as made up of low-income producers and having opportunities for …
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