scholarly journals The SHEDS-Wood Model: Incorporation of Observational Data to Estimate Exposure to Arsenic for Children Playing on CCA-Treated Wood Structures

2007 ◽  
Vol 115 (5) ◽  
pp. 781-786 ◽  
Author(s):  
Leila M. Barraj ◽  
Joyce S. Tsuji ◽  
Carolyn G. Scrafford
Keyword(s):  
Observational Data ◽  
Treated Wood ◽  
Wood Structures ◽  
Wood Model

Chromium, Copper, and Arsenic Concentrations in Soil Underneath CCA-Treated Wood Structures

2003 ◽  
Vol 12 (6) ◽  
pp. 779-798 ◽  
Author(s):  
Timothy Townsend ◽  
Helena Solo-Gabriele ◽  
Thabet Tolaymat ◽  
Kristin Stook ◽  
Naila Hosein
Keyword(s):  
Treated Wood ◽  
Wood Structures

Distribution and mobility of chromium, copper, and arsenic in soils collected near CCA-treated wood structures in Korea

2007 ◽  
Vol 374 (2-3) ◽  
pp. 273-281 ◽  
Author(s):  
Hekap Kim ◽  
Dong-Jin Kim ◽  
Jin-Hoi Koo ◽  
Jeong-Gue Park ◽  
Yong-Chul Jang
Keyword(s):  
Treated Wood ◽  
Wood Structures

Chromium, Copper, and Arsenic Concentrations in Soil Underneath CCA-Treated Wood Structures

2003 ◽  
Vol 12 (6) ◽  
pp. 779-798 ◽  
Author(s):  
Timothy Townsend ◽  
Helena Solo-Gabriele ◽  
Thabet Tolaymat ◽  
Kristin Stook ◽  
Naila Hosein
Keyword(s):  
Treated Wood ◽  
Wood Structures

scholarly journals Environmental Monitoring of Heavy Metals and Arsenic in Soils Adjacent to CCA-Treated Wood Structures in Gangwon Province, South Korea

2009 ◽  
Vol 28 (4) ◽  
pp. 340-346 ◽  
Author(s):  
Ahmed A. Abdelhafez ◽  
Yasser M. Awad ◽  
Min-Su Kim ◽  
Kwang-Joon Ham ◽  
Kyoung-Jae Lim ◽  
...  
Keyword(s):  
Heavy Metals ◽  
South Korea ◽  
Environmental Monitoring ◽  
Treated Wood ◽  
Wood Structures ◽  
Heavy Metals And Arsenic

scholarly journals RESTAURAÇÃO DE ESTRUTURA EM MADEIRA DA IGREJA NOSSA SENHORA DO CARMO EM DIAMANTINA – MG: ESTUDO DE CASO [ Restoration of wooden structure of Nossa Senhora do Carmo church in Diamantina – MG: Case study ]

2018 ◽  
Vol 15 (1) ◽  
Author(s):  
Ana Clara dos Anjos Torres ◽  
Thiago Bomjardim Porto ◽  
Antônio Pires Azevedo Junior ◽  
Romero Cesar Gomes
Keyword(s):  
Treated Wood ◽  
Minas Gerais ◽  
Wood Structures ◽  
Future Studies ◽  
Restoration Work ◽  
Xylophagous Insects ◽  
Wooden Structures ◽  
Artistic Heritage ◽  
The Church

RESUMO: O estado de Minas Gerais possui o maior acervo artístico do barroco nacional, destacando os casarões e igrejas dos municípios históricos. Visto a importância histórica e cultural de tais edificações, torna-se necessária a restauração de seus elementos estéticos e funcionais, tais como as estruturas de madeira, em sua maioria. O objetivo deste trabalho é sequenciar as etapas de elaboração de projetos de restauração e recuperação de estruturas de madeira. E, como estudo de caso, apresentar a obra de restauração da Igreja Nossa Senhora do Carmo, em Diamantina, indicando o diagnóstico de suas patologias e a proposta para a intervenção. Foi necessário tratar quimicamente as superfícies contra infestações de insetos xilófagos e substituir parte da estrutura por madeira nova tratada, ancorada em nova fundação em concreto armado. Este reforço foi imprescindível para a estabilidade estrutural da Igreja, mesmo alterando parte do ambiente. Conclui-se que a escolha da técnica de recuperação de estruturas de madeira é condicionada por se tratar de uma restauração. É destacado também que as limitações de um projeto de restauração impedem, muitas vezes, o atendimento à normalização técnica quanto aos carregamentos e dimensionamento de estruturas. A técnica utilizada em Diamantina pode ser aprimorada para casos semelhantes e futuros estudos são importantes para a apresentação de metodologias menos destrutivas.ABSTRACT: The state of Minas Gerais has the largest artistic heritage of the national baroque, highlighting the mansions and churches of the historical municipalities. Because of the historical and cultural importance of such buildings, it is necessary to restore their aesthetic and functional elements, such as the wooden structures, in the majority. This work aims to sequence the stages of projects of restoration and recovery of wooden structures. As a case study, presents the restoration work of the Nossa Senhora do Carmo Church, in Diamantina, diagnosing its pathologies and proposing the intervention. It was necessary to chemically treatment against xylophagous insects infestations and replace part of the structure with new treated wood, anchored in a new foundation made of reinforced concrete. This reinforcement was indispensable for the structural stability of the Church, even changing part of the environment. It is concluded that the choice of the technique of recovery of wood structures is conditioned by the fact that it is a restoration. It is also emphasized that the limitations of a restoration project often prevent the obedience of technical normalization regarding the loading and dimensioning of structures. The technique used in Diamantina can be improved for similar cases and future studies are important for the presentation of less destructive methodologies.

Effect of tin-bath treatment on anatomical properties of Firmiana simplex wood

2020 ◽  
Vol 5 (3) ◽  
Author(s):  
Kufre Edet Okon ◽  
Michael Akpan ◽  
Idiana-Abasi Kufre Okon ◽  
Uduak Oworen
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Light Microscope ◽  
Cell Walls ◽  
Treated Wood ◽  
Wood Properties ◽  
Wood Structures ◽  
Anatomical Properties ◽  
The Impact ◽  
Scanning Electron

Wood modification in general, is an environmental non-biocide method to modify and improve certain wood properties to enable its utilization for diverse purpose. In this study, Firmiana simplex wood was modify using low melting point tin-alloy as the heat-treatment medium. The anatomical properties of the tin-bath treated wood were studied using a light microscope and scanning electron microscope analysis. Microscopic analyses with a light microscope showed that the morphologies of the wood were less smashed by the impact of the treatment with no deformation of the vessels after tin-alloy treatment while scanning electron microscope revealed collapse in the wood structures with damages to the cell walls and vessels. It was also evident from scanning electron microscope analyses that tin-alloy penetrated the wood structure, therefore forming a film covering the cell walls and partly occupying the wood cell lumens.

Current status of special planetary and lunar theories and ephemerides

1966 ◽  
Vol 25 ◽  
pp. 266-267
Author(s):  
R. L. Duncombe
Keyword(s):  
Observational Data ◽  
Current Status ◽  
Numerical Errors

An examination of some specialized lunar and planetary ephemerides has revealed inconsistencies in the adopted planetary masses, the presence of non-gravitational terms, and some outright numerical errors. They should be considered of temporary usefulness only, subject to subsequent amendment as required for the interpretation of observational data.

July 11, 1991 Eclipse Corona Photometry by the Results of Electropolarimetric and CCD-Matrix Observations

1994 ◽  
Vol 144 ◽  
pp. 567-569
Author(s):  
V. Kulidzanishvili ◽  
D. Georgobiani
Keyword(s):  
Solar Corona ◽  
Observational Data ◽  
Solar Limb ◽  
Ccd Matrix

AbstractThe observational data of July 11, 1991 eclipse solar corona obtained by both electropolarimeter (EP) and CCD-matrix were processed. Using these data, the solar corona photometry was carried out. The results of EP data are compared with the ones of CCD data. It must be noted here that the CCD data give us only characteristics of the inner corona, while the EP data show the features of both the inner and middle corona up to 4R⊙. Standard flattening indexϵis evaluated from both data. The dependence of the flattening index on the distance from the solar limb is investigated. The isophotes in Na and Ca lines are plotted. Based on these data some ideas and conclusions on the type of the solar corona are presented.

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