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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

The Analysis and Manufacturing of the Personal Vacuum Assisted Climber II

Astle, Rhet B. 01 May 2014 (has links)
The Personal Vacuum Assisted Climber or PVAC for short (as shown in Fig 2) is a new means for climbing walls. Unlike ordinary climbing methods used today, the PVAC scales walls via suction. This suction is produced by three spinning impellers within each vacuum motor, which removes air from a sealed area. A climber pulls down on a vacuum pressure release mechanism to release the vacuum. Foot stirrups are used by the climber to climb to the next higher step. This allows the strength of the climber's legs to lift his/her body reducing arm fatigue, allowing rapid ascension of any climbable wall. The overall desirables to accomplish in this project are to make a new system that is: Lightweight Improved ergonomics Easy to manufacture and produce Quieter These items were accomplished by using design tools such as Finite Element Analysis (FEA), Design for Manufacturing and Assembly (DFMA), Failure Modes and Effects Analysis (FMEA), preexisting studies (ergonomics), and testing techniques. Tests were conducted to ensure that the new PVAC is operating to safe standards. These tests will be looked at in the following areas: Sound Reduction Battery Voltage Profile Temperature Analysis Vacuum Motor Performance Friction Coefficient Experiments Lastly, future applications and new improvements were addressed so next generation systems can be made if further development ensues.
2

Fenologia e atributos reprodutivos de espécies ocorrentes em restinga no Maranhão

Karina Maciel Delgado Ribeiro, Éville 31 January 2011 (has links)
Made available in DSpace on 2014-06-12T15:04:39Z (GMT). No. of bitstreams: 2 arquivo5592_1.pdf: 1336072 bytes, checksum: aa2ee859ba5f223df40489595225179a (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2011 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / O objetivo deste trabalho foi avaliar a fenologia das espécies ocorrentes em um ambiente de Restinga no Nordeste do Maranhão, Brasil, verificando como os padrões fenológicos variam entre hábitos e como as fenofases se correlacionam com os fatores climáticos. Foram estudados 1167 indivíduos, de 88 espécies vegetais, distribuídos em quatro hábitos (árvores, arbustos, ervas e trepadeiras), durante dois anos (2008-2010) em uma Reserva Legal próxima ao Parque Nacional dos Lençóis Maranhenses (2°43 22,5 S; 42°49 50 W). Todas as fenofases avaliadas, com exceção da frutificação, apresentaram sazonalidade. A floração de Ribeiro, E. K. M. D. Fenologia e Atributos Reprodutivos de espécies ocorrentes em restinga no Maranhão árvores e arbustos ocorreu na estação seca, enquanto a de ervas ocorreu na estação chuvosa. A frutificação das espécies arbóreas ocorreu, em sua maioria, na estação seca, bem como os maiores picos de frutificação de ervas e trepadeiras. Durante a estação chuvosa houve maior atividade de frutificação de arbustos. Queda e brotamento de folhas ocorreram na estação seca para todos os hábitos, exceto o herbáceo, no qual a queda de folhas ocorreu na estação chuvosa. As datas médias dos picos de atividade das fenofases floração, frutificação e brotamento mostraram diferenças para cada hábito, sugerindo que a presença destes diferentes hábitos proporciona melhor distribuição temporal de recursos vegetais (folhas, flores e frutos) na comunidade
3

Arvores, arbustos e trepadeiras do cerradão do Jardim Botanico Municipal de Bauru, SP / Trees, shrubs and climbers of the cerradão of the Bauru Botanical Garden, SP

Weiser, Veridiana de Lara 30 January 2007 (has links)
Orientador: Fernando Roberto Martins / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Biologia / Made available in DSpace on 2018-08-10T10:50:37Z (GMT). No. of bitstreams: 1 Weiser_VeridianadeLara_D.pdf: 4641893 bytes, checksum: 1aa201008555e81839cb53153494c2b9 (MD5) Previous issue date: 2007 / Resumo: O Bioma Cerrado contém uma diversidade imensa de espécies, sendo grande parte delas endêmica. Devido à ameaça intensa e crescente sobre seus recursos naturais, o Cerrado é considerado atualmente como uma das áreas prioritárias para a conservação da diversidade biológica mundial. No workshop ¿Bases para conservação e uso sustentável das áreas de cerrado do estado de São Paulo¿ de 1995, foram consideradas áreas prioritárias para a conservação as que apresentavam maior pressão antrópica, como a região de Bauru, onde os remanescentes de cerrado estão sob maior ameaça, porque eles estão muito próximos da mancha urbana, que está crescendo em direção às áreas de vegetação de Cerrado. Bauru está localizada no centro-oeste do estado de São Paulo, e a vegetação predominante é o cerradão, cuja flora é muito pouco conhecida, especialmente as trepadeiras. A maioria dos estudos florísticos realizados no estado de São Paulo simplesmente negligenciaram as trepadeiras. Nosso objetivo foi documentar a diversidade alfa de uma área de cerradão, considerando tanto as espécies de arbustos, árvores e trepadeiras (riqueza) quanto a sua abundância (equabilidade). Estabelecemos 100 parcelas aleatórias de 10 x 10 m no cerradão do Jardim Botânico Municipal de Bauru, que possui área total de 321,71 hectares. Todos os arbustos, árvores e trepadeiras enraizados nessas parcelas foram amostrados e identificados. Encontramos 14.208 indivíduos de 192 espécies, 129 gêneros e 55 famílias, das quais 140 (73%) espécies eram de arbustos e árvores e 52 (27%) espécies eram de trepadeiras. Dos arbustos e árvores amostrados, 7.744 indivíduos não estavam infestados por trepadeiras, e os restantes 3.429 indivíduos apresentaram uma ou mais trepadeiras, caracterizando uma infestação de 30,7% dos arbustos e árvores na área e uma média de 1,34 trepadeiras por forófito. O Jardim Botânico Municipal de Bauru é uma importante área prioritária para a conservação porque representa um dos últimos fragmentos com área total superior a 200 hectares na região centro-oeste do estado de São Paulo, porque está sob alta pressão demográfica devido à proximidade com a mancha urbana e, principalmente, porque apresenta uma alta diversidade florística / Abstract: The Cerrado Biome contains an immense diversity of species, most of them being endemic. Due to the intense and increasing threats to its natural resources, the Cerrado is currently considered as a priority area for the world-wide biological diversity conservation. In the 1995 workshop ¿Conservation basis and the sustainable use of the cerrado areas of São Paulo State¿, the priority areas for conservation were considered those with greater anthropic pressure, such as the Bauru region, where the cerrado fragments are highly endangered because they are close to the city, which is growing towards the cerrado areas. Bauru is located at the middle-west of São Paulo State, and the predominant vegetation is the cerradão, with a poorly known flora, especially the climbers. Most floristic surveys carried out in São Paulo State have simply disregarded the climbers. We aimed to document the alfa-diversity of a cerradão area, considering both the species of shrubs, trees and climbers (richness) and their abundance (equitability). We set 100 random 10 x 10 m plots in the cerradão of the Bauru Botanical Garden, which has a total area of 321,71 hectares. We sampled and identified all shrubs, trees and climbers rooted in each plot. We found 14.208 individuals of 192 species in 129 genera and 55 families, of which 140 (73%) species of shrubs and trees and 52 (27%) species of climbers. Among the shrubs and trees sampled 7.744 individuals were not infested by climbers and the other 3.429 individuals had one or more climbers, thus yielding infestation of 30,7% of the shrubs and trees in the area and a mean of 1,34 climbers per phorophyte. The Bauru Botanical Garden is an important priority area for conservation because it represents one of the last fragments with total area larger than 200 hectares in the middle-west of São Paulo State, because it is under high demographic pressure due to its proximity with the city, and especially because it has a high floristic diversity / Doutorado / Doutor em Ecologia
4

Composição florística e estrutura fitossociológica de uma floresta estacional semidecidual em Araras, SP / Floristic composition and phytosociological structure of a seasonal semideciduous forest in Araras, São Paulo state

Soares, Marcelo Steinmetz 04 October 2007 (has links)
Made available in DSpace on 2016-06-02T19:31:41Z (GMT). No. of bitstreams: 1 2032.pdf: 1258357 bytes, checksum: 7a656235a713f3885b57759902651544 (MD5) Previous issue date: 2007-10-04 / The purpose of this study was to analyze the specific composition of tree, arboreal structure, infestation by climbers, canopy layer and compare the results with other forest fragments and, from these, to form a data bank for monitoring. The forest studied is located in the geographical coordinates S 22º 17 and W 47º 24 . The soil is red-dark Latosoil type and its topography is irregular. The floristic analysis was made by expeditions and phytosociology by quadrats of 10x10m in three blocks. The canopy analysis was made by digital image and the climbers infest by coverage index. It was found 114 species belonging to 40 families and 74 genres. It was sampled 728 alive plants. The species with greater importance value were Trichilia clausenii, Galesia integrifolia, Trichilia catigua, Metrodora nigra e Cariniana estrelensis. The sample canopy coverture presented 70% of the samples with 70% of coverture e only 14% with minor than 50%. 83% of the trees presented any infestation by climber and 60% with indice 4 e 5, that was considered elevated. The greatest infestation occurred at the tree of the canopy layer. The population of pioneer species, in the sucessional classification, presented little number of young plants and the secondary and shade tolerant great number and a complete series of diametric classes. / Objetivo deste estudo foi analisar um remanescente de floresta estacional semidecidual, sob o aspecto da: composição específica; estrutura arbórea; infestação por lianas; integridade do dossel; comparação com outros remanescentes para formar um banco de dados para futuros monitoramento. A mata, objeto deste estudo, se localiza nas coordenadas 22º 17' S 47º 24' W. O solo é do tipo Latossolo vermelho escuro e a topografia acidentada. A análise florística foi feita de modo expedito e a fitossociológica por parcelas de 10x10m em três blocos. Foram analisadas as coberturas do dossel por imagem digitalizada e a infestação por lianas por meio do índice de cobertura. Foram encontradas 114 espécies, pertencentes a 40 famílias e 80 gêneros. Foram amostrados 728 indivíduos vivos em meio hectare. As espécies que apresentaram maior valor de importância foram Trichilia clausenii, Galesia integrifolia, Trichilia catigua, Metrodora nigra e Cariniana estrelensis. Na maioria das parcelas (70%) ocorreu uma cobertura do dossel acima de 70% e 14 % com cobertura abaixo de 50%. Os índices de infestação por lianas demonstraram que 83% das árvores apresentaram infestação e 60% das árvores apresentaram índices 4 e 5 que foram considerados elevados. Os maiores índices de infestação por lianas ocorreram nos indivíduos cujas alturas correspondem a de dossel. As populações das principais espécies pioneiras mostraram-se em desequilíbrio, com poucos indivíduos nas classes de menores diâmetros. Enquanto que as secundárias tardias e de subosque em equilíbrio, com indivíduos nas diversas classes diamétricas e grande número de indivíduos jovens.
5

Hodnocení dynamické posturální stability u lezců / Evaluation of dynamic postural stability in climbers

Karšayová, Kateřina January 2019 (has links)
Author: Bc. Kateřina Karšayová Title: Evaluation of dynamic postural stability in climbers Objectives: The main objective of this diploma thesis is to investigate the difference of dynamic postural stability in between climbers and recreational athletes and measure all the data by computerised dynamic posturography Smart EquiTest System from Neurocom Incorporated. Methods: This is a quantitative cross-sectional study involving 40 participants aged between 22 and 29 years divided into two groups (climbers, non-climbers). Measurements of dynamic postural stability were performed on Neurocom Smart EquiTest in the Kinesiological Laboratory of Charles University, Faculty of Physical Education and Sport. Motor Control Test, Sensory Organization Test and Limits of Stability test batteries were chosen for this study. The measured data was subsequently processed by Neurocom Balance Manager Software. The following statistical methods were used to analyze the data obtained by Neurocom: Shapiro - Wilk test, Student's t-test, Mann - Whitney test and Cohen's d effect size. Results: A statistically significant difference (in favor of climbers) was found in COND6 of Sensory Organization Test, where p-value was 0,04. In Motor Control Test there was a statistically significant difference (in favor of climbers) in...
6

Longitudinální sledování antropometrických a fyziologických charakteristik elitního sportovního lezce / Longitudinal monitoring of anthropometric and physiologic characteristic of the elite sport climber.

Šenk, Svatopluk January 2012 (has links)
Title: Longitudinal monitoring of anthropometric and physiologic characteristic of the elite sport climber. Work objective: The work objective is monitoring and analyzing of general and the specific physical fitness factors by the world knowing climbers from the longtime aspect. Method: In the process of the longtime monitoring was used the laboratory and the field measuring and testing to reach of the determined objectives. The particular factors of the physical fitness where determined according to aerobic fitness tests (step test to "vita maxima"), power condition tests (handgrip dynamometry, bent arm hang, etc), flexibility test and kinesiology study. To complement, understanding and interpretation of some results were used questionnaire with the opened questions. Results: The elite climber (body mass has been increased from 59,3 kg - age 16,8 years to 62,0 kg - age 19.0 years, body height has been increased from 181,9 cm to 183,4 cm., body fat from 5,3 % to 6,7 %). The climbing performance RP has been increased from climbing difficulty 11+ to 12 UIAA; the results reached at the testing of force abilities (bend arm hang has been increased from 100,0 to 122,0 s; finger hang on 2,5 cm ledge slightly has been decreased from 116,6 s to 111,6 s; relative force of the upper limb, reached at mass,...
7

Ambition und Leibdistanz. / Sozialer Aufstieg als Indikator eines ambivalenten Zivilisierungsprozesses zwischen 1800 und 2000 / Ambition and distance from the body. / Social mobility as an indicator of an ambivalent civilising process between 1800 and 2000

Schömer, Frank 12 July 2006 (has links)
No description available.

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