Viscoelastic Properties of Soft Tissue by Discrete Model Characterization

1968 ◽  
Vol 90 (2) ◽  
pp. 239-247 ◽  
Author(s):  
C. E. Jamison ◽  
R. D. Marangoni ◽  
A. A. Glaser
Keyword(s):  
Experimental Technique ◽  
Human Body ◽  
Biological Tissues ◽  
Viscoelastic Models ◽  
Pig Skin ◽  
Viscoelastic Parameters ◽  
Body Tissues ◽  
Mathematical Equations ◽  
Viscoelastic Modeling ◽  
Injury Research

In order to study the response of the human body to acceleration and force, it is necessary to be able to relate force to deformation in various body tissues. Problems wherein this becomes essential include aerospace travel, crash injury research, and shock/vibration environments produced by mechanical systems. Since the tissues within the human body are viscoelastic in nature, it is important to apply proper viscoelastic relations when investigating the mechanics of deformation. This paper discusses on experimental technique for obtaining discrete viscoelastic models of soft biological tissues. The application of this experimental technique, using guinea pig skin as an example, is presented along with numerical results for the various viscoelastic parameters. A discussion of discrete viscoelastic modeling and the necessary mathematical equations for relating deformation to force is also included.

Ultrasonic intra-body communication using semi-guided waves through human body tissues

2021 ◽  
Vol 150 (4) ◽  
pp. A31-A31
Author(s):  
John O. Gerguis ◽  
Mayukh Nath ◽  
Shreyas Sen
Keyword(s):  
Human Body ◽  
Guided Waves ◽  
Body Tissues

TT virus has a ubiquitous diffusion in human body tissues: analyses of paired serum and tissue samples

2003 ◽  
Vol 10 (2) ◽  
pp. 95-102 ◽  
Author(s):  
T. Pollicino ◽  
G. Raffa ◽  
G. Squadrito ◽  
L. Costantino ◽  
I. Cacciola ◽  
...  
Keyword(s):  
Human Body ◽  
Tissue Samples ◽  
Tt Virus ◽  
Body Tissues ◽  
Paired Serum

Non-sensitizing Zr–O–N coatings for jewelry made of non-precious alloys

2019 ◽  
pp. 65-72
Author(s):  
V. E. Bazhenov ◽  
E. S. Khramchenkova ◽  
A. V. Koltygin ◽  
S. V. Prishepov ◽  
I. V. Shkalei
Keyword(s):  
Magnetron Sputtering ◽  
Human Body ◽  
Negative Influence ◽  
Production Costs ◽  
Body Tissues ◽  
Golden Color ◽  
Steel Substrates ◽  
Number Of Customers ◽  
Hank’S Solution ◽  
Aisi 430

Recent decades jewelry manufacturers put into practice using of non-precious alloys in order to decrease the production costs. Nevertheless, the large number of customers has allergic (sensitizing) body reaction on jewelries. Applying of non-sensitizing coating is able to decrease negative influence of jewelry material on human body. One of the biologically inert materials toward to human body tissues is zirconium. In the present work we examined the zirconium-based coatings applied by magnetron sputtering. Eleven coating regimes of AISI 430 steel substrates by zirconium oxynitride were investigated. Coatings corrosion test in Hank’s solution, microhardness measurements, color performance in CIE 1976 L*a*b* and RGB color spaces were carried out. The coating width was 0.4–1.2 μm. It was established that coatings have microhardness 2.5–3.0 GPa and can simulate jewelries colors. Using energy dispersive X-ray spectroscopy, it was evaluated that coatings consist of Zr, N and O. We select the sputtering regimes which provides metallic type coatings with the high optical reflectivity in the energy range near the infrared part of spectrum (<1.7 eV) and has golden color with a high lightness. It was experimentally proved that coatings are not corroding in Hank’s solution. The allergy patch test of jewelry with zirconium oxynitride coating demonstrate a good result on respondents with sensitizing reaction to non-precious alloys jewelry. The obtained results allow us to recommend the application of a zirconium-based coating magnetron sputtering in manufacturing of the non-precious alloys jewelry.

Electrospinning of Aligned Biodegradable Polymer Fibers and Composite Fibers for Tissue Engineering Applications

2007 ◽  
Vol 7 (11) ◽  
pp. 3834-3840 ◽  
Author(s):  
Ho-Wang Tong ◽  
Min Wang
Keyword(s):  
Tissue Engineering ◽  
Human Body ◽  
High Speed ◽  
Polymer Fibers ◽  
Rotating Drum ◽  
Composite Fibers ◽  
Fiber Alignment ◽  
Rotating Speed ◽  
Body Tissues ◽  
Fibrous Membranes

Fibrous membranes of aligned poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) fibers have been made through electrospinning. A high-speed rotating drum was used as the fiber collector while the electric field was manipulated by using five knife-edged auxiliary electrodes. It was found that a high drum rotating speed of 3000 rpm could lead to a nearly perfect alignment of PHBV fibers during electrospinning. Multilayered fibrous structures with each layer having a different direction of fiber alignment could also be constructed through electrospinning. The electrospun PHBV fibers were further modified by incorporating carbonated hydroxyapatite (HA) nanospheres (up to 20% of HA) in the fibers. The fibrous membranes made of aligned PHBV fibers and made of HA/PHBV composite fibers should be very useful for the tissue engineering of different human body tissues.

scholarly journals MODELING OF HUMAN BODY TISSUES IMPEDANCE COMPONENTS IN FREQUENCY RANGE

2019 ◽  
Vol 80 (4) ◽  
pp. 49-53
Author(s):  
Olena Naumovych ◽  
◽  
Yevhen Pokhodylo ◽  
Marta Dovhan ◽  
◽  
...  
Keyword(s):  
Human Body ◽  
Frequency Range ◽  
Body Tissues
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