Hybrid characterization of engine isolator and its application to cabin noise studies.

2010 ◽  
Vol 127 (3) ◽  
pp. 1873-1873
Author(s):  
Marshall Downing
2020 ◽  
Vol 83 ◽  
pp. 106341 ◽  
Author(s):  
Bankole I. Oladapo ◽  
Ilesanmi A. Daniyan ◽  
Omolayo M. Ikumapayi ◽  
Olaoluwa B. Malachi ◽  
Idowu O. Malachi

2017 ◽  
Vol 65 (12) ◽  
pp. 5063-5073 ◽  
Author(s):  
Song Liu ◽  
Nathan D. Orloff ◽  
Charles A. E. Little ◽  
Wei Zhao ◽  
James C. Booth ◽  
...  

2016 ◽  
Vol 13 (1) ◽  
pp. 72-92
Author(s):  
Nelson Luis Smythe Jr. ◽  
Gheysa Caroline Prado ◽  
Kelli Cristine Assis da Silva Smythe

A representação gráfica no processo de desenvolvimento de produtos assistivos é uma área pouco explorada que poderia auxiliar na visualização de aspectos conceituais tornando-os tangíveis. Isto amplia o entendimento das etapas do processo por todos os membros da equipe, formada por profissionais de diferentes áreas. Assim apresenta-se uma caracterização de símbolos gráficos usados nas representações de processos de desenvolvimento de tecnologias assistivas. Para tanto, foram selecionados, na literatura, símbolos gráficos e pictogramas utilizados na área de saúde e posteriormente propostas de design para produtos assistivos que possuíssem alguma representação gráfica do processo apresentado. Foi então proposto um modelo híbrido de caracterização das representações a partir dos modos de simbolização de representações gráficas (verbal; esquemático; e pictórico) e abordagens para o desenho de pictogramas (geons; silhuetas; e observação). Os resultados da caracterização foram discutidos de acordo com as similaridades entre eles identificadas no modelo híbrido e as lacunas encontradas. A avaliação trouxe como resultado a baixa utilização de símbolos gráficos nas representações de processo levantadas, mesmo quando os autores eram designers.AbstractGraphic representation is a little explored technique in the development of assistive products, despite being helpful in the visualization of conceptual aspects, which are then made  tangible. This improves the understanding of the process phases by the whole team, which includes practitioners from different areas. Thus, the characterization of graphic symbols used in assistive technology development processes are presented. A literature review was carried out to select: graphic symbols and pictorial images used in health care area; and the design of new proposed methods for assistive products that had some graphic representantion of its processes. From this point the authors developed a preliminar hybrid characterization model based on symbolization of graphical representations (verbal, schematic, and pictorial) and approaches for pictogram design (geons, silhouettes and observation). The results of the characterization were discussed using as reference the hybrid model and the gaps. The assessment showed low use of graphic symbols for design processes representations, even when the authors were designers.


2015 ◽  
Vol 5 (10) ◽  
pp. 123
Author(s):  
Eduardo Antônio Pitt

Neste artigo daremos principal atenção aos dois critérios de identidade de conteúdo conceitual que estão presentes nos §§ 3 e 8 da Conceitografia de Gottlob Frege. Nosso propósito é analisar as características destes critérios da notação conceitual de Frege porque pretendemos delimitar a discussão em torno dos problemas relacionados às noções de identidade intensional e extensional. Dessa forma, pretendemos: (i) analisar os critérios de identidade de conteúdo conceitual presentes nos §§ 3 e 8 da Conceitografia com o objetivo de mostrar que Frege apresentou uma caracterização híbrida da noção de conteúdo conceitual (valor semântico) e (ii) fazer considerações a respeito de relações que podemos estabelecer entre os critérios intensionais e extensionais de Frege e Richard Kirkham presentes no livro Teorias da Verdade: Uma Introdução Crítica. Com tais comparações pretendemos averiguar: (iii) se o critério de identidade do § 8 da Conceitografia é idêntico ao critério extensional de equivalência material de Kirkham e (iv) se o critério de identidade do § 3 da Conceitografia é mais forte, mais fraco ou idêntico aos critérios intensionais de equivalência essencial e de equivalência de sinonímia de Kirkham.Abstract: In this paper we will give primary attention to two identity criteria of conceptual content that are present in §§ 3 and 8 of Gottlob Frege's Begriffsschrift. Our purpose is to analyze the characteristics of these criteria of conceptual notation of Frege because we want to delimit the discussion around problems related to the notions of intensional and extensional identity. Thus, we intend to: (i) analyze the identity criteria of conceptual content present in §§ 3 and 8 of Begriffsschrift aiming to show that Frege introduced a hybrid characterization of the notion of conceptual content (semantic value) and (ii) make considerations about the relationships that we establish between intensional and extensional criteria of Frege and Richard Kirkham present in the book Theories of Truth: A Critical Introduction. With such comparisons we intend to investigate: (iii) if the identity criterion of § 8 of Begriffsschrift is identical to the extensional criterion of material equivalence in Kirkham and (iv) if the identity criterion of § 3 of Begriffsschrift is stronger, weaker or identical to intensional criteria of essential equivalence and of synonyms equivalence of Kirkham. Key words: Identity, Intensional Criterion, Extensional Criterion.


Author(s):  
B. L. Soloff ◽  
T. A. Rado

Mycobacteriophage R1 was originally isolated from a lysogenic culture of M. butyricum. The virus was propagated on a leucine-requiring derivative of M. smegmatis, 607 leu−, isolated by nitrosoguanidine mutagenesis of typestrain ATCC 607. Growth was accomplished in a minimal medium containing glycerol and glucose as carbon source and enriched by the addition of 80 μg/ ml L-leucine. Bacteria in early logarithmic growth phase were infected with virus at a multiplicity of 5, and incubated with aeration for 8 hours. The partially lysed suspension was diluted 1:10 in growth medium and incubated for a further 8 hours. This permitted stationary phase cells to re-enter logarithmic growth and resulted in complete lysis of the culture.


Author(s):  
A.R. Pelton ◽  
A.F. Marshall ◽  
Y.S. Lee

Amorphous materials are of current interest due to their desirable mechanical, electrical and magnetic properties. Furthermore, crystallizing amorphous alloys provides an avenue for discerning sequential and competitive phases thus allowing access to otherwise inaccessible crystalline structures. Previous studies have shown the benefits of using AEM to determine crystal structures and compositions of partially crystallized alloys. The present paper will discuss the AEM characterization of crystallized Cu-Ti and Ni-Ti amorphous films.Cu60Ti40: The amorphous alloy Cu60Ti40, when continuously heated, forms a simple intermediate, macrocrystalline phase which then transforms to the ordered, equilibrium Cu3Ti2 phase. However, contrary to what one would expect from kinetic considerations, isothermal annealing below the isochronal crystallization temperature results in direct nucleation and growth of Cu3Ti2 from the amorphous matrix.


Author(s):  
B. H. Kear ◽  
J. M. Oblak

A nickel-base superalloy is essentially a Ni/Cr solid solution hardened by additions of Al (Ti, Nb, etc.) to precipitate a coherent, ordered phase. In most commercial alloy systems, e.g. B-1900, IN-100 and Mar-M200, the stable precipitate is Ni3 (Al,Ti) γ′, with an LI2structure. In A lloy 901 the normal precipitate is metastable Nis Ti3 γ′ ; the stable phase is a hexagonal Do2 4 structure. In Alloy 718 the strengthening precipitate is metastable γ″, which has a body-centered tetragonal D022 structure.Precipitate MorphologyIn most systems the ordered γ′ phase forms by a continuous precipitation re-action, which gives rise to a uniform intragranular dispersion of precipitate particles. For zero γ/γ′ misfit, the γ′ precipitates assume a spheroidal.


Author(s):  
R. E. Herfert

Studies of the nature of a surface, either metallic or nonmetallic, in the past, have been limited to the instrumentation available for these measurements. In the past, optical microscopy, replica transmission electron microscopy, electron or X-ray diffraction and optical or X-ray spectroscopy have provided the means of surface characterization. Actually, some of these techniques are not purely surface; the depth of penetration may be a few thousands of an inch. Within the last five years, instrumentation has been made available which now makes it practical for use to study the outer few 100A of layers and characterize it completely from a chemical, physical, and crystallographic standpoint. The scanning electron microscope (SEM) provides a means of viewing the surface of a material in situ to magnifications as high as 250,000X.


Author(s):  
D. F. Blake ◽  
L. F. Allard ◽  
D. R. Peacor

Echinodermata is a phylum of marine invertebrates which has been extant since Cambrian time (c.a. 500 m.y. before the present). Modern examples of echinoderms include sea urchins, sea stars, and sea lilies (crinoids). The endoskeletons of echinoderms are composed of plates or ossicles (Fig. 1) which are with few exceptions, porous, single crystals of high-magnesian calcite. Despite their single crystal nature, fracture surfaces do not exhibit the near-perfect {10.4} cleavage characteristic of inorganic calcite. This paradoxical mix of biogenic and inorganic features has prompted much recent work on echinoderm skeletal crystallography. Furthermore, fossil echinoderm hard parts comprise a volumetrically significant portion of some marine limestones sequences. The ultrastructural and microchemical characterization of modern skeletal material should lend insight into: 1). The nature of the biogenic processes involved, for example, the relationship of Mg heterogeneity to morphological and structural features in modern echinoderm material, and 2). The nature of the diagenetic changes undergone by their ancient, fossilized counterparts. In this study, high resolution TEM (HRTEM), high voltage TEM (HVTEM), and STEM microanalysis are used to characterize tha ultrastructural and microchemical composition of skeletal elements of the modern crinoid Neocrinus blakei.


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