scholarly journals Materials used to simulate physical properties of human skin

2015 ◽  
Vol 22 (1) ◽  
pp. 3-14 ◽  
Author(s):  
A. K. Dąbrowska ◽  
G.-M. Rotaru ◽  
S. Derler ◽  
F. Spano ◽  
M. Camenzind ◽  
...  
Keyword(s):  
Physical Properties ◽  
Human Skin ◽  
Materials Used

scholarly journals Chemical and Physical Properties of Limestone Powder as a Potential Microfiller of Polymer Composites

2017 ◽  
Vol 63 (2) ◽  
pp. 67-78 ◽  
Author(s):  
M. Kępniak ◽  
P. Woyciechowski ◽  
W. Franus
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Physical Properties ◽  
Polymer Composites ◽  
Asphalt Mixture ◽  
Limestone Powder ◽  
Coarse Aggregates ◽  
Mineral Powder ◽  
Materials Used ◽  
Scanning Electron

Abstract The preliminary stage of asphalt mixture production involves the drying and dedusting of coarse aggregates. The most common types of coarse aggregates used are limestone and basalt. In the process of drying and dedusting the dryer filter accumulates large quantities of waste in the form of mineral powder. This paper introduces an investigation into limestone powder waste as a potential microfiller of polymer composites. Physical characteristics such as the granulation the of powder collected from the filter - in terms of the season of its collection and the type of input materials used - were analysed. A scanning electron microscope (SEM) was used for the investigation described within this paper. The obtained results were compared against those of other materials which can be used as polymer composites microfillers.

GENERAL INFORMATION ABOUT THE STRUCTURE OF HUMAN SKIN

2017 ◽  
Author(s):  
Tetiana Yurchyk ◽  
◽  
Tetiana Sukhomlin ◽  
Keyword(s):  
Physical Properties ◽  
Human Skin ◽  
Chemical Exposure ◽  
General Information ◽  
General Rules ◽  
The Future ◽  
Fatty Substance ◽  
Multicomponent Nature ◽  
Inspection Of The Scene

The success of handprints examined by experts depends on many factors, the main of which is the receipt of dactyloscopic information by qualified detection, fixation and removal of handprints during the inspection of the scene. To do this, the future expert needs knowledge about the mechanism of papillary patterns, types of handprints, general rules for their detection, and so on. The fact is that the multicomponent nature of the fatty substance creates ample opportunities for the detection of handprints and provides many potential opportunities for chemical exposure. In addition, the substrate of the fatty substance has some physical properties that can be used in the process of visualization of traces.

An evaluation of the relationship between impression and the physical properties of human skin

2016 ◽  
Author(s):  
Tatsuya Matsumoto ◽  
Kensuke Tobitani ◽  
Yusuke Tani ◽  
Hiroki Fujii ◽  
Noriko Nagata
Keyword(s):  
Physical Properties ◽  
Human Skin ◽  
The Relationship

scholarly journals The Effects of Physical Properties of Fibers in Nettle Fiber/Polyester Composites on the Thermal Conductivity Coefficient

2018 ◽  
Vol 1 (1) ◽  
pp. 834-842
Author(s):  
Murat Koru ◽  
Kenan Büyükkaya
Keyword(s):  
Thermal Conductivity ◽  
Composite Materials ◽  
Physical Properties ◽  
Thermal Conductivity Coefficient ◽  
The Black Sea ◽  
Stinging Nettle ◽  
Fiber Concentration ◽  
Black Sea Region ◽  
Polyester Composites ◽  
Materials Used

The physical properties of the materials used are also important in the thermal conduction, besides many other factors. In this study, nettle fiber/polyester composites were formed using stinging nettle grown in the Black Sea region. The stinging nettle fibers used in the formation of these composites were divided into three parts as bottom, middle, and top. The physical properties (diameter, density, crystallinity) of the fibers obtained from different parts of the plant and how the increased fiber concentration affected the thermal conductivity coefficients of the composite materials formed were studied. As a result, it was observed that the thermal conductivity coefficients of the composites increased with the increase of the crystallinity ratio of the fiber. Moreover, the increased fiber concentration significantly increased the thermal conductivity coefficient of the composite materials produced.

Comparison of the Physical Properties of Dental Restorative Materials Used in Endodontics

2007 ◽  
pp. 841-844
Author(s):  
T. Watanabe ◽  
Kimitoshi Ando ◽  
T. Ito ◽  
Naritaka Kitamura ◽  
Kazuhiko Nakata ◽  
...  
Keyword(s):  
Physical Properties ◽  
Dental Restorative Materials ◽  
Restorative Materials ◽  
Materials Used ◽  
Dental Restorative

scholarly journals Esterases affect the physical properties of materials used to seal the endodontic space

2019 ◽  
Vol 35 (8) ◽  
pp. 1065-1072
Author(s):  
M.Q. Marashdeh ◽  
S. Friedman ◽  
C. Lévesque ◽  
Y. Finer
Keyword(s):  
Physical Properties ◽  
Properties Of Materials ◽  
Materials Used

Viability of Some Kano-Nigerian Clays for Refractory Applications

2013 ◽  
Vol 315 ◽  
pp. 477-481 ◽  
Author(s):  
I.A. Rafukka ◽  
B. Onyekpe ◽  
Y. Tijjani
Keyword(s):  
Compressive Strength ◽  
Physical Properties ◽  
Bulk Density ◽  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Linear Shrinkage ◽  
Chemical Compositions ◽  
Shock Resistance ◽  
Materials Used ◽  
Refractory Bricks

The physical properties of some materials used by local foundries were investigated with a view to assessing their suitability for use as low heat duty refractory bricks. The samples were collected from Malamai village, Gezawa Local Government, Kano state; they are Gezawa clay and Burji (Clay). The samples were crushed, ground, sieved and the chemical compositions were determined. The clay samples were treated separately as well as blended with Gezawa clay in different proportions and molded in to bricks. The bricks were dried and fired to 1100. Test for refractoriness, thermal shock resistance, linear shrinkage; bulk density, porosity and compressive strength were carried out on each of the specimen. Burji blended with 50% to 90% Gezawa clay gave improved thermal shock resistance with a refractoriness of 1300 and hence could be used for non ferrous melting cupolas.

Analysis of Impact of Selected Structure Parameters of Reinforcing Preforms for Metal-Matrix Composites on their Saturation Process

2013 ◽  
Vol 334-335 ◽  
pp. 219-224
Author(s):  
Dorota Nagolska ◽  
Katarzyna Gawdzińska
Keyword(s):  
Physical Properties ◽  
Metal Matrix Composite ◽  
Metal Matrix Composites ◽  
Mathematical Description ◽  
Metal Matrix ◽  
Geometrical Structure ◽  
Structure Parameters ◽  
Matrix Composites ◽  
Properties Of Materials ◽  
Materials Used

The process of saturation of reinforcement preforms for metal-matrix composite castings is dependent on many different factors. One group of these factors is related to the process of manufacturing of metal-matrix composites with saturated reinforcement. Another group is related to the physical properties of materials used for manufacturing of such composites. The structure of reinforcement preforms is one of such factors. Due to its complexity, its mathematical description is difficult to perform. This structure can be examined and described using physical properties like porosity or permeability. During the conducted analysis presented in the paper, it was checked whether there is a relation between studied physical properties of reinforcement preforms and a degree of their saturation. It was also determined, which of the studied parameters is the best for description of an influence of the geometrical structure of reinforcement preforms on the process of their saturation and in consequence, on the porosity of the obtained composite castings.

The Physical Characteristics of Materials Used in the Manufacture of Orthoses for Patients with Diabetes

2007 ◽  
Vol 28 (10) ◽  
pp. 1057-1063 ◽  
Author(s):  
Joanne Paton ◽  
Ray B. Jones ◽  
Elizabeth Stenhouse ◽  
Graham Bruce
Keyword(s):  
Physical Properties ◽  
Diabetic Foot ◽  
Performance Indicator ◽  
Practical Method ◽  
Relevant Information ◽  
Foot Ulcers ◽  
Diabetic Foot Ulcers ◽  
Patients With Diabetes ◽  
Properties Of Materials ◽  
Materials Used

Background: Neuropathic diabetic foot ulceration may be prevented if the mechanical stress transmitted to the plantar tissues can be modified. Orthotic therapy is one practical method commonly used to maintain tissue integrity. Orthotic design must consider the materials chosen for use in fabrication and profile of the device because both aspects influence the performance and durability of the device. Published research evaluating the physical properties of materials commonly used in the manufacture of orthoses for patients with diabetes is limited. This study investigated the physical properties of materials used to fabricate orthoses designed for the prevention of neuropathic diabetic foot ulcers. Methods: Fifteen commonly used orthotic materials were selected for testing: four specifications of 6.4-mm Poron® (Rogers Corp., Gent, Belgium), 3.2-mm Poron®, three densities of 12-mm Ethylene Vinyl Acetate (EVA), 12-mm low-density plastazote, two depths (6.4-mm, 3.2-mm) of Cleron™ (Algeo Ltd., Liverpool, UK), Professional Protective Technology (PPT), and MaxaCane (Algeo Ltd, Liverpool, UK). The density, resilience, stiffness, static coefficient of friction, durability, and compression set of each material were tested, ranked, and allocated a performance indicator score. Results: The most clinically desirable dampening materials tested were Poron® 96 (6-mm) and Poron® 4000 (6-mm). High density EVA (Algeo Ltd., Liverpool, UK) and Lunacell Nora® EVA (Freudenberg, Weinhein, Germany) possessed the properties most suitable to achieve motion control. The data present a simple and useful comparison and classification of the selected materials. Conclusions: Although this information should not be used as a single indicator for assessing the suitability of an orthotic material, the results provide clinically relevant information relating to the physical properties of orthotic materials commonly used in the prevention of neuropathic diabetic foot ulcers.

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