scholarly journals Characterization of Sheep Wool as a Sustainable Material for Acoustic Applications

Materials ◽  
2017 ◽  
Vol 10 (11) ◽  
pp. 1277 ◽  
Author(s):  
Romina del Rey ◽  
Antonio Uris ◽  
Jesús Alba ◽  
Pilar Candelas
Keyword(s):  
Sustainable Material ◽  
Sheep Wool

scholarly journals Virgin Natural Cork Characterization as a Sustainable Material for Use in Acoustic Solutions

2021 ◽  
Vol 13 (9) ◽  
pp. 4976
Author(s):  
Juan Miguel Barrigón Morillas ◽  
David Montes González ◽  
Rosendo Vílchez-Gómez ◽  
Valentín Gómez Escobar ◽  
Rubén Maderuelo-Sanz ◽  
...  
Keyword(s):  
Absorption Coefficient ◽  
Sound Absorption ◽  
Scientific Literature ◽  
Outer Bark ◽  
Reverberation Chamber ◽  
Frequency Bands ◽  
Sustainable Material ◽  
Natural Cork ◽  
Sheep Wool

A characterization of the sound absorption of a sustainable material with scarce current use such as natural virgin cork is presented in this paper in order to explore further possible applications in the design of acoustic solutions. Different samples of virgin cork not bonded and various decorative panel formats were tested under random sound incidence conditions in a standardized reverberation chamber. The samples in which the outer bark of the cork was facing upwards showed a better behavior as an acoustic absorber, with sound absorption coefficient values generally greater than 0.6 for frequency bands between 1 and 5 kHz. The results obtained were compared with samples of some recycled materials available in the scientific literature, such as sheep wool and PET.

A Review on Characterization of Sheep Wool Impurities and Existing Techniques of Cleaning: Industrial and Environmental Challenges

2021 ◽  
pp. 1-19
Author(s):  
Faisal Aboelkasim Allafi ◽  
Md Sohrab Hossain ◽  
Marwan Shaah ◽  
Japarang Lalung ◽  
Mohd Omar Ab Kadir ◽  
...  
Keyword(s):  
Environmental Challenges ◽  
Sheep Wool

scholarly journals Characterization of Keratin Hydrolyzates Prepared from Sheep Wool

2014 ◽  
Vol 26 (19) ◽  
pp. 6523-6527
Author(s):  
Pavel Mokrejš ◽  
Ondrej Krejcí ◽  
Svatopluk Sukop ◽  
Petr Svoboda
Keyword(s):  
Sheep Wool

Chemical Characterization of Melanins in Sheep Wool and Human Hair

1996 ◽  
Vol 9 (2) ◽  
pp. 51-57 ◽  
Author(s):  
HIROYUKI OZEKI ◽  
SHOSUKE ITO ◽  
KAZUMASA WAKAMATSU
Keyword(s):  
Human Hair ◽  
Chemical Characterization ◽  
Sheep Wool

Characterization of sheep wool panels for room acoustic applications

2016 ◽  
Author(s):  
Umberto Berardi ◽  
Gino Iannace ◽  
Maria Di Gabriele
Keyword(s):  
Sheep Wool

Morphological Characterization of Mycobacteriophage R1

1974 ◽  
Vol 32 ◽  
pp. 254-255
Author(s):  
B. L. Soloff ◽  
T. A. Rado
Keyword(s):  
Carbon Source ◽  
Stationary Phase ◽  
Growth Phase ◽  
Minimal Medium ◽  
Morphological Characterization ◽  
Logarithmic Growth Phase ◽  
Complete Lysis ◽  
Lysogenic Culture ◽  
Logarithmic Growth

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.

AEM analysis of crystallization in Ti-based amorphous alloys

1983 ◽  
Vol 41 ◽  
pp. 270-271
Author(s):  
A.R. Pelton ◽  
A.F. Marshall ◽  
Y.S. Lee
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Amorphous Materials ◽  
Isothermal Annealing ◽  
Amorphous Matrix ◽  
Nucleation And Growth ◽  
Current Interest ◽  
Amorphous Films ◽  
Electrical And Magnetic Properties

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.

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