Criteria for Evaluation of Material for Porcine Heterograft Valves

1981 ◽  
pp. 58-62
Author(s):  
L. Anisimowicz ◽  
M. Trenkner ◽  
S. Raczyński ◽  
A. Gorczyński ◽  
R. Gutkowski ◽  
...  
Author(s):  
◽  
Silvia Adami ◽  
Alfredo Alberti ◽  
Margherita Andretta ◽  
Giuliano Buzzetti ◽  
...  

Author(s):  
Cheng Liu ◽  
Douglas Scarth ◽  
Alain Douchant

Flaws found during in-service inspection of CANDU Zr-2.5Nb pressure tubes include fuel bundle scratches, debris fretting flaws, fuel bundle bearing pad fretting flaws, mechanical damage flaws and crevice corrosion marks. The CSA Standard N285.8 contains procedures and acceptance criteria for evaluation of the structural integrity of CANDU Zr-2.5Nb pressure tubes containing flaws. One of the requirements is to evaluate the flaws for fatigue crack initiation. There was a need to develop a statistical-based model of fatigue crack initiation at flaws for use in deterministic and probabilistic assessments of Zr-2.5Nb pressure tubes. A number of fatigue crack initiation experiments have been performed on notched specimens from irradiated and unirradiated Zr-2.5Nb pressure tube material with a range of hydrogen equivalent concentrations. These experiments were performed in an air environment and included temperature and load rise time as test parameters. The test data has been used to develop a statistical-based model of fatigue crack initiation at flaws that covers the effects of flaw root radius, load rise time and irradiation. This paper describes the development of the statistical-based model.


Author(s):  
Angélica Conceição Dias Miranda ◽  
Milton Shintaku ◽  
Simone Machado Firme

Resumo: Os repositórios têm se tornado comum nas universidades e institutos de pesquisa, como forma de ofertar acesso à produção científica e, com isso, dar visibilidade à instituição. Entretanto, em muitos casos ainda estão restritos aos conceitos do movimento do arquivo aberto e acesso aberto, sendo que já se discute o Movimento da Ciência Aberta, revelando certo descompasso, requerendo estudos que apoiem a atualização dessa importante ferramenta. Nesse sentido, o presente estudo verifica os requisitos envolvidos nos movimentos abertos, de forma a apoiar a discussão técnica e tecnológica. Um estudo bibliográfico, que transforma as informações sobre os movimentos em critérios para avaliação de ferramentas para criação de repositórios, apresentando a implementação da interação como um novo desafio. Nas considerações procura-se contribuir com a discussão sobre a Ciência Aberta, de forma mais aplicada bem como o ajuste dos repositórios a esse movimento.Palavras-chave: Repositórios.  Critérios de avaliação. Arquivo aberto. Acesso aberto. Dados abertos. Ciência aberta.SURVEY OF CRITERIA FOR EVALUATION OF REPOSITORY TOOLS ACCORDING TO OPEN SCIENCE Abstract: Repositories have become common in universities and research institutes, as a way of offering access to scientific production, thereby giving visibility to the institution. Meanwhile, in many cases, repositories are restricted to the concepts of open movement and open access considering that the Open Science Movement is already being discussed. Regarding this matter, this study verifies the requirements involved in the open movements, in order to support a technical and technological discussion.  A bibliographic study that transforms information about movements into criteria to evaluate tools used to create repositories, presenting an implementation of interaction as a new challenge. In the considerations, we contribute with a discussion about an Open Science, in a more applied way, as well as the adjustment of the repositories to this movement.Keywords: Repositories. Evaluation Criteria. Open File. Open Access. Open Data. Open Science.


2021 ◽  
Vol 24 ◽  
Author(s):  
Jung Min Chang ◽  
Hee Jung Shin ◽  
Ji Soo Choi ◽  
Sung Ui Shin ◽  
Bo Hwa Choi ◽  
...  

Author(s):  
G. Kiran Kumar ◽  
Chikkamanju .

This explorative study focuses on access to print and electronic information resources among journalists in Mysore and Mandya district of Karnataka, India. The researchers tried to analyze frequency of library visits, average time spent, use of print and electronic information resources, criteria for evaluation of information resources, usage of social networks for accessing and sharing information, rating of online resources based on its features, preferred format of information resources, factors influencing for use of e-resources and to know the importance of e-resources for journalistic tasks. For this purpose the researchers prepared a well structured questionnaire as a tool for data collection and the collected questionnaire has been analyzed and presented with useful percentage analysis, Anova, Mean, Standard Deviation and suitable tables for presentation of data. It has been found form the study that the journalists prefer both print and electronic format of information resources. Hence, the libraries should maintain both formats of information resources till the users inculcate the habit of using information resources available in electronic format. 


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