scholarly journals Characterization of field-dependent elastic modulus and damping in pure nickel and iron specimens using a new experimental system

2009 ◽  
Author(s):  
A. L. Morales ◽  
A. J. Nieto ◽  
J. M. Chicharro ◽  
P. Pintado ◽  
R. Moreno
Keyword(s):  
Elastic Modulus ◽  
Experimental System ◽  
Pure Nickel ◽  
Field Dependent

Influence of internal stresses on field-dependent elastic modulus and damping in pure nickel

2010 ◽  
Vol 322 (21) ◽  
pp. 3584-3594 ◽  
Author(s):  
A.L. Morales ◽  
A.J. Nieto ◽  
J.M. Chicharro ◽  
P. Pintado ◽  
G.P. Rodríguez ◽  
...  
Keyword(s):  
Elastic Modulus ◽  
Pure Nickel ◽  
Internal Stresses ◽  
Field Dependent

scholarly journals A Universal Model for the Log-Normal Distribution of Elasticity in Polymeric Gels and Its Relevance to Mechanical Signature of Biological Tissues

Biology ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 64
Author(s):  
Arnaud Millet
Keyword(s):  
Elastic Modulus ◽  
Normal Distribution ◽  
Biological Tissues ◽  
Force Microscopy ◽  
Polymeric Gels ◽  
Atomic Force ◽  
Clear Explanation ◽  
Log Normal ◽  
Log Normal Distribution

The mechanosensitivity of cells has recently been identified as a process that could greatly influence a cell’s fate. To understand the interaction between cells and their surrounding extracellular matrix, the characterization of the mechanical properties of natural polymeric gels is needed. Atomic force microscopy (AFM) is one of the leading tools used to characterize mechanically biological tissues. It appears that the elasticity (elastic modulus) values obtained by AFM presents a log-normal distribution. Despite its ubiquity, the log-normal distribution concerning the elastic modulus of biological tissues does not have a clear explanation. In this paper, we propose a physical mechanism based on the weak universality of critical exponents in the percolation process leading to gelation. Following this, we discuss the relevance of this model for mechanical signatures of biological tissues.

scholarly journals Creation of Ionically Crosslinked Tri-Layered Chitosan Membranes to Simulate Different Human Skin Properties

Materials ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1807
Author(s):  
Rocío Guerle-Cavero ◽  
Blanca Lleal-Fontàs ◽  
Albert Balfagón-Costa
Keyword(s):  
Elastic Modulus ◽  
Human Skin ◽  
Sodium Tripolyphosphate ◽  
Snow Crab ◽  
Suitable Material ◽  
Cosmetic Industry ◽  
Novel Method ◽  
Current Article ◽  
Chitosan Membranes

In 2023, new legislation will ban the use of animals in the cosmetic industry worldwide. This fact, together with ethical considerations concerning the use of animals or humans in scientific research, highlights the need to propose new alternatives for replacing their use. The aim of this study is to create a tri-layered chitosan membrane ionically crosslinked with sodium tripolyphosphate (TPP) in order to simulate the number of layers in human skin. The current article highlights the creation of a membrane where pores were induced by a novel method. Swelling index, pore creation, and mechanical property measurements revealed that the swelling index of chitosan membranes decreased and, their pore formation and elasticity increased with an increase in the Deacetylation Grade (DDA). Additionally, the results demonstrate that chitosan’s origin can influence the elastic modulus value and reproducibility, with higher values being obtained with seashell than snow crab or shrimp shells. Furthermore, the data show that the addition of each layer, until reaching three layers, increases the elastic modulus. Moreover, if layers are crosslinked, the elastic modulus increases to a much greater extent. The characterization of three kinds of chitosan membranes was performed to find the most suitable material for studying different human skin properties.

scholarly journals Random field characterization of uniaxial compressive strength and elastic modulus for intact rocks

2018 ◽  
Vol 9 (6) ◽  
pp. 1609-1618 ◽  
Author(s):  
Huaxin Liu ◽  
Xiaohui Qi
Keyword(s):  
Compressive Strength ◽  
Elastic Modulus ◽  
Random Field ◽  
Uniaxial Compressive Strength

scholarly journals Temperature- and field-dependent characterization of a conductor on round core cable

2015 ◽  
Vol 28 (6) ◽  
pp. 065007 ◽  
Author(s):  
C Barth ◽  
D C van der Laan ◽  
N Bagrets ◽  
C M Bayer ◽  
K-P Weiss ◽  
...  
Keyword(s):  
Field Dependent

scholarly journals Characterization of Elastic Modulus Across the (Al1–xScx)N System Using DFT and Substrate-Effect-Corrected Nanoindentation

2018 ◽  
Vol 65 (11) ◽  
pp. 2167-2175 ◽  
Author(s):  
Dong Wu ◽  
Yachao Chen ◽  
Sukriti Manna ◽  
Kevin Talley ◽  
Andriy Zakutayev ◽  
...  
Keyword(s):  
Elastic Modulus ◽  
Substrate Effect

scholarly journals Photovoltaic effect in Light Emitting Diodes

2016 ◽  
Vol 1 (1) ◽  
pp. 30-36
Author(s):  
K. Remidi ◽  
A. Cheknane ◽  
M. Haddadi
Keyword(s):  
Theoretical Model ◽  
Experimental Work ◽  
Photovoltaic Effect ◽  
Research Work ◽  
Electrical Characterization ◽  
Experimental System ◽  
Photoelectric Effect ◽  
Electrical Characteristics ◽  
Light Emitting

This paper describes an experimental work on the electrical characterization of commercial LED of different colors and their photoelectric effect. A research work has been carried out to develop the experimental measurement in order to show the presence of a photovoltaic effect on LEDs. For this purpose, we measured the electrical characteristics of individual LED and studied their light intensities using a pyranometer EPLEY. This work focused mainly on red, green and yellowLEDs. Moreover, we have implemented an experimental system for the measurement of sensitivity of different LEDs depending on the power of light from a light source. A comparison was made between theoretical model and experimental results.

Dna Synthesis in Purified Populations of Avian Erythroid Cells

1972 ◽  
Vol 10 (1) ◽  
pp. 27-46
Author(s):  
A. F. WILLIAMS
Keyword(s):  
Biochemical Characterization ◽  
Bone Marrow Cells ◽  
Density Gradient Centrifugation ◽  
Gradient Centrifugation ◽  
Experimental System ◽  
Equilibrium Density ◽  
Polychromatic Erythrocytes ◽  
Type Size ◽  
Haemoglobin Content

By the use of equilibrium density-gradient centrifugation erythroblasts and early polychromatic erythrocytes have been isolated from avian anaemic bone marrow. Cells from both the unfractionated and purified preparations have been characterized in terms of their histological type, size, haemoglobin content and ability to synthesize DNA. Erythroblasts were the only cells to synthesize DNA and it appeared that their progeny, the polychromatic erythrocyte, failed to enter a new S phase. The experimental system described allows biochemical characterization of earlier stages of avian erythropoiesis than has previously been possible.

scholarly journals Material characterization of a pultrusion specific and highly reactive polyurethane resin system: Elastic modulus, rheology, and reaction kinetics

2021 ◽  
Vol 207 ◽  
pp. 108543 ◽  
Author(s):  
Onur Yuksel ◽  
Michael Sandberg ◽  
Ismet Baran ◽  
Nuri Ersoy ◽  
Jesper H. Hattel ◽  
...  
Keyword(s):  
Elastic Modulus ◽  
Reaction Kinetics ◽  
Material Characterization ◽  
Resin System ◽  
Polyurethane Resin
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