No description available.

Plank (tongue and groove) wood decking is a product that is commonly used in post and beam timber construction to transfer gravity loads on roofs and floors. In 2010, The National Building Code of Canada changed the application area of the specified concentrated roof live loads from 750 mm x 750 mm to 200 mm x 200 mm. The change was made to better reflect the area which a construction worker with equipment occupies. Preliminary analysis showed that the change in the application area of concentrated loads may have a significant impact on the design of decking systems. Little research or development has been done on plank decking since the 1950’s and 1960’s. An experimental program was undertaken at the University of Ottawa’s structural laboratory to better understand the behaviour of plank decking under uniformly distributed and concentrated loads. Non-destructive and destructive tests were conducted on plank decking systems to investigate their stiffness and failure mode characteristics under uniformly distributed as well as concentrated loads. The experimental test program was complimented with a detailed finite element model in order to predict the behaviour of a plank decking system, especially the force transfer between decks through the tongue and groove joint. The study showed that the published deflection coefficients for uniformly distributed loads can accurately predict the three types of decking layup patterns specified in the Canadian Design Standard (CSA O86, 2009). For unbalanced uniformly distributed loads on two-span continuous layup, it was found that the deflection coefficient of 0.42 was non-conservative. It was also found that under concentrated loads, the stiffness of the decking system increased significantly as more boards were added. A deflection coefficient of 0.40 is appropriate to calculate the deflection for the three types of decking layup patterns specified in the Canadian Design Standard (CSA O86, 2009) under concentrated load on an area of 200 mm by 200 mm. Significant load sharing was observed for plank decking under concentrated loads. An increase in capacity of about 1.5 to 2.5 times the capacity of the loaded boards was found. Furthermore, it was found that placing sheathing on top of a decking system had a significant effect in the case of concentrated load with an increase of over 50% in stiffness and over 100% in ultimate capacity.

Plank (tongue and groove) wood decking is a product that is commonly used in post and beam timber construction to transfer gravity loads on roofs and floors. In 2010, The National Building Code of Canada changed the application area of the specified concentrated roof live loads from 750 mm x 750 mm to 200 mm x 200 mm. The change was made to better reflect the area which a construction worker with equipment occupies. Preliminary analysis showed that the change in the application area of concentrated loads may have a significant impact on the design of decking systems. Little research or development has been done on plank decking since the 1950’s and 1960’s. An experimental program was undertaken at the University of Ottawa’s structural laboratory to better understand the behaviour of plank decking under uniformly distributed and concentrated loads. Non-destructive and destructive tests were conducted on plank decking systems to investigate their stiffness and failure mode characteristics under uniformly distributed as well as concentrated loads. The experimental test program was complimented with a detailed finite element model in order to predict the behaviour of a plank decking system, especially the force transfer between decks through the tongue and groove joint. The study showed that the published deflection coefficients for uniformly distributed loads can accurately predict the three types of decking layup patterns specified in the Canadian Design Standard (CSA O86, 2009). For unbalanced uniformly distributed loads on two-span continuous layup, it was found that the deflection coefficient of 0.42 was non-conservative. It was also found that under concentrated loads, the stiffness of the decking system increased significantly as more boards were added. A deflection coefficient of 0.40 is appropriate to calculate the deflection for the three types of decking layup patterns specified in the Canadian Design Standard (CSA O86, 2009) under concentrated load on an area of 200 mm by 200 mm. Significant load sharing was observed for plank decking under concentrated loads. An increase in capacity of about 1.5 to 2.5 times the capacity of the loaded boards was found. Furthermore, it was found that placing sheathing on top of a decking system had a significant effect in the case of concentrated load with an increase of over 50% in stiffness and over 100% in ultimate capacity.

No description available.

No mercado alimentício, a busca de inovações objetiva mais que tornar um alimento mais saboroso. Aspectos como aroma, cor, facilidade de preparo e aceitação do consumidor são decisivos para seu sucesso. Atualmente, na América do Norte e na Europa, um produto denominado grilling plank vem se destacando na defumação de peixes e carnes. Embora no Brasil o churrasco seja prato típico, esse produto, obtido por meio da industrialização da madeira, ainda é pouco conhecido no país.Historiadores relatam que sua origem remonta aos nativos da costa americana do Pacífico, que utilizavam a madeira de árvores de Thuja plicata, espécie encontrada na região, para preparar peixes, o que lhes conferia sabor suave e maciez. A ideia difundiu-se e, atualmente, outras espécies como Prunus avium e Alnus glutinosa também são utilizadas. Considerando-se a biodiversidade de espécies de árvores existente no país, pode-se afirmar que o Brasil apresenta significativo potencial para que sejam encontradas espécies com as propriedades e características necessárias para a industrialização de grilling planks. O presente trabalho teve como objetivo identificar e caracterizar a madeira de espécies nativas brasileiras com potencial para a confecção do produto em questão. A identificação de espécies propícias foi realizada por meio da caracterização de suas propriedades físicas e químicas, bem como da consulta à bibliografia especializada. As espécies analisadas neste trabalho foram: Amburana cearensis, Cedrela fissilis, Myrocarpus frondosus e Ocotea porosa. / In the food market, the search for innovations aims more than making food more palatable. Aspects like aroma, color, ease of preparation and consumer acceptance are decisive for its success. Currently, both in North America and Europe, a product called grilling plank has been standing out in the smoking of fish and meat. Although in Brazil barbecue is a typical dish, this product, obtained through wood industrialization, is still little known in the country. Historians report that its origin goes back to the Pacific Coast Native Americans, who used Thuja plicata wood, common in the region, to prepare fish, providing them with softness and mild taste. The idea has spread and nowadays other species such as Prunus avium and Alnus glutinosa are used for the same purpose. Due to the biodiversity of tree species in the country, Brazil presents significant potential for finding species with the properties and characteristics necessary for the industrialization of grilling planks. The objective of this work was to identify and characterize the wood of Brazilian native species with potential for the production of the product in question. The identification of propitious species was carried out through the characterization of their physical and chemical properties, as well as the study of specialized literature. The Brazilian species analyzed in this research were: Amburana cearensis, Cedrela fissilis, Myrocarpus frondosus and Ocotea porosa.

Orientador: Alysson Fábio Ferrari / Dissertação (mestrado) - Universidade Federal do ABC. Programa de Pós-Graduação em Física, 2014

OLIVEIRA JÚNIOR, R. I . Modelos de Randall Sundrum e estabilização do raio da dimensão extra. 2017. 54 f. Dissertaço (mestrado) - Universidade Federal do Ceará, Centro de Ciencias, Programa de Pós-Graduação em Fısica, Fortaleza, 2017. / Submitted by Pós-Graduação em Física (posgrad@fisica.ufc.br) on 2017-10-26T19:33:09Z No. of bitstreams: 1 2017_dis_rioliveirajunior.pdf: 803388 bytes, checksum: e30dc735640f5c347b38926012dc5612 (MD5) / Approved for entry into archive by Giordana Silva (giordana.nascimento@gmail.com) on 2017-10-30T14:55:42Z (GMT) No. of bitstreams: 1 2017_dis_rioliveirajunior.pdf: 803388 bytes, checksum: e30dc735640f5c347b38926012dc5612 (MD5) / Made available in DSpace on 2017-10-30T14:55:42Z (GMT). No. of bitstreams: 1 2017_dis_rioliveirajunior.pdf: 803388 bytes, checksum: e30dc735640f5c347b38926012dc5612 (MD5) Previous issue date: 2017 / In this dissertation we study The Randall Sundrum models type I and II and the stabilization of the radius of the extra dimension. Both the types were elaborated by Lisa Randall and Ramman Sundrum. The type I was developed to solve the gauge hierarchy problem (big discrepancy between the energy scale of the standard model(103GeV ) and the energy scale of the gravity (1019GeV ) . The type II explain, in details, the behavior of the gravity. We begin speaking of the extra dimensions models that preceded the Randall Sundrum model: Kaluza Klein, Arkani-Hammed- Dimopoulus-Dvali (ADD) and the Rubakov’s model ( The universe as a domain wall). Then, we make a review of the Lisa Randall and Ramman Sundrum papers. After that,we focus on the problem of the stabilization of the radius. This problem arises in the type I model. Lastly, we explain the solution that was created to it: The Goldberger Wise mechanism. / Nessa dissertação estudamos os modelos Randall Sundrum Tipos I e II e a estabilização do raio da dimensão extra. Tanto o tipo I quanto o II foram elaborados por Lisa Randall e Ramman Sundrum. O tipo I foi desenvolvido para resolver o problema da hierarquia de gauge ( grande discrepância entre a escala de energia do modelo padrão (103 GeV ) e a escala de energia da gravidade (1019 GeV ) . O tipo II trata, detalhadamente, o comportamento da gravidade. Iniciamos falando dos modelos de dimensões extra que antecederam os modelos de Randall Sundrum: Kaluza-Klein, Arkani-Hamed-DimopoulosDvali (ADD) e o modelo de Rubakov (O Universo como uma parede de domínio). Em seguida, fazemos uma revisão dos trabalhos de Lisa Randall e Ramman Sundrum. Após isso, focamos no problema da estabilização do raio. Esse problema surge no modelo tipo I. Por fim, explicamos a solução dada para ele: O mecanismo de Goldberger Wise.

Orientador: Elso Drigo Filho / Coorientador: Jorge Chahine / Banca: Mário José de Oliveira / Banca: Regina Maria Ricotta / Resumo: A equação de Fokker-Planck é utilizada para descrever processos estocásticos e possui aplicações em muitos ramos da física, química e biologia. Para obter a solução da equação de Fokker-Planck, podemos mapeá-la em uma equação tipo Schrödinger através de mudanças apropriadas nas funções envolvidas. A vantagem dessa associação é que se pode construir a distribuição de probabilidade da equação de Fokker-Planck usando soluções conhecidas da equação de Schrödinger. Neste trabalho, fazendo uso dessa associação, apresentamos a solução da equação de Fokker-Planck para um potencial biestável relacionado ao oscilador harmônico duplo. As funções de onda e os autovalores encontrados através da equação tipo Schrödinger permitem construir a distribuição de probabilidade como uma série de... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The Fokker-Panck equation is used in describing stochastic processes and can be applied in many branches of physics, chemistry and biology. The solution of the Fokker-Planck equation can be obtained by mapping it in a Schrödinger type equation via appropriate changes in the functions involved. The advantage of this combination is that one can construct the probability distribution the Fokker-Planck equation by using well-known solutions of the Schrödinger equation. In this work, making use of such a combination, we present the solution of the Fokker-Planck equation for a bistable potential related to the double-harmonic oscillator. The wave functions and autovalues found by solving the Schrödinger type equation allows the construction of the probability distribution as a series of functions. Thus, we can observe the... (Complete abstract click electronic access below) / Mestre

Made available in DSpace on 2014-06-11T19:22:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-08-17Bitstream added on 2014-06-13T18:08:50Z : No. of bitstreams: 1 campos_dc_me_sjrp_parcial.pdf: 70056 bytes, checksum: 1b462b86dc78ba4a4e5883ac948cd7d6 (MD5) Bitstreams deleted on 2015-06-03T11:42:37Z: campos_dc_me_sjrp_parcial.pdf,. Added 1 bitstream(s) on 2015-06-03T11:44:04Z : No. of bitstreams: 1 000697097_20150817.pdf: 69875 bytes, checksum: fd9779234e9095559f8dd3264d118d80 (MD5) Bitstreams deleted on 2015-08-17T11:07:11Z: 000697097_20150817.pdf,. Added 1 bitstream(s) on 2015-08-17T11:07:56Z : No. of bitstreams: 1 000697097.pdf: 381473 bytes, checksum: 9d301dcb9a541d53c7db8a28b1edd84e (MD5) / A equação de Fokker-Planck é utilizada para descrever processos estocásticos e possui aplicações em muitos ramos da física, química e biologia. Para obter a solução da equação de Fokker-Planck, podemos mapeá-la em uma equação tipo Schrödinger através de mudanças apropriadas nas funções envolvidas. A vantagem dessa associação é que se pode construir a distribuição de probabilidade da equação de Fokker-Planck usando soluções conhecidas da equação de Schrödinger. Neste trabalho, fazendo uso dessa associação, apresentamos a solução da equação de Fokker-Planck para um potencial biestável relacionado ao oscilador harmônico duplo. As funções de onda e os autovalores encontrados através da equação tipo Schrödinger permitem construir a distribuição de probabilidade como uma série de... / The Fokker-Panck equation is used in describing stochastic processes and can be applied in many branches of physics, chemistry and biology. The solution of the Fokker-Planck equation can be obtained by mapping it in a Schrödinger type equation via appropriate changes in the functions involved. The advantage of this combination is that one can construct the probability distribution the Fokker-Planck equation by using well-known solutions of the Schrödinger equation. In this work, making use of such a combination, we present the solution of the Fokker-Planck equation for a bistable potential related to the double-harmonic oscillator. The wave functions and autovalues found by solving the Schrödinger type equation allows the construction of the probability distribution as a series of functions. Thus, we can observe the... (Complete abstract click electronic access below)

To build is to add to the existing. Three existing wooden buildings in Visby, made in three different local techniques (a post and plank, a timber frame and a log construction) have been the starting point for what to build upon. After studying these techniques, new buildings have been added in line with the principals of the existing. The existing buildings are situated on two sites, both courtyards, and have generated three additions: a kiosk, an apartment building and a visitor centre.