scholarly journals Examination of Selected Upper Shoe Materials Based on Bamboo Fabrics

2019 ◽  
Vol 27 (6(138)) ◽  
pp. 85-90 ◽  
Author(s):  
Katarzyna Ławińska ◽  
Wioleta Serweta ◽  
Izabela Jaruga ◽  
Nataliia Popovych
Keyword(s):  
Polyurethane Foam ◽  
Outer Layer ◽  
Point Of View ◽  
Textile Materials ◽  
Surrounding Environment ◽  
Medium Layer ◽  
Water Vapour Absorption ◽  
New Material ◽  
Standard Composition ◽  
Good Possibility

In this paper the authors describe the creation of new material packages based on bamboo textile materials for upper shoe material. These packages were made up of three layers: an inner layer in the foot skin neighbourhood, outer layer – which contacted with the surrounding environment, and a medium layer – polyurethane foam of a thickness of 2 mm. Experimetal tests consisted in the measurement of hygienic parameters (water vapour absorption and permeability) and some mechanical indicators important from the user’s point of view, like the elongation property and maximum force at break. The packages based on bamboo materials were compared with a standard composition: cotton – polyurethane foam – cotton. The results obtained showed, that in a lot of cases, the use of bamboo materials as lining or an outer layer is a good possibility to improve the hygienic and mechanical properties of newly formed material compositions.

scholarly journals Proposal for the Selection of Materials for Footwear to Improve Thermal Insulation Properties Based on Laboratory Research

2018 ◽  
Vol 26 (5(131)) ◽  
pp. 75-80 ◽  
Author(s):  
Wioleta Serweta ◽  
Małgorzata Matusiak ◽  
Zbigniew Olejniczak ◽  
Jolanta Jagiełło ◽  
Justyna Wójcik
Keyword(s):  
Comparative Analysis ◽  
Thermal Resistance ◽  
Water Vapour ◽  
Thermal Insulation ◽  
Point Of View ◽  
Laboratory Research ◽  
Vapour Permeability ◽  
Textile Materials ◽  
Water Vapour Absorption ◽  
Selection Of

The aim of this study was the analysis of the thermal resistance of upper textile materials combined with leather or textile linings. Following a comparative analysis of the combinations of materials tested, the best insulators werre recommended. Footwear material packages were created on the basis of the analysis of hygienic properties of textile and leather materials, which were available on the market. Hygienic properties like water vapour permeability and water vapour absorption gave information about the possibility to apply these materials from a microclimate point of view.

scholarly journals Design and Characterization of Gypsum Mortars Dosed with Polyurethane Foam Waste PFW

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1497 ◽  
Author(s):  
Isabel Santamaría Vicario ◽  
Lourdes Alameda Cuenca-Romero ◽  
Sara Gutiérrez González ◽  
Verónica Calderón Carpintero ◽  
Ángel Rodríguez Saiz
Keyword(s):  
Natural Resources ◽  
Construction Industry ◽  
Polyurethane Foam ◽  
Industrial Waste ◽  
Vapour Permeability ◽  
Polyurethane Waste ◽  
New Material ◽  
Technical Specifications ◽  
Mechanical Strengths

The properties and the behaviour of plaster mortars designed with Polyurethane Foam Waste (PFW) are studied in this investigation. A characterization of the mixtures is completed, in accordance with the technical specifications of European Norms. The incorporation of polyurethane waste foam can yield porous and lighter mortars, with better resistance to water-vapour permeability, although with weaker mechanical strength and higher levels of absorbency. Nevertheless, suitable mechanical strengths were achieved, resulting in a new material that is compliant with the requirements of the construction industry. The use of PFW in the the manufacture of gypsum mortars for construction reduces the consumption of natural resources and, at the same time, recovers an industrial waste that is otherwise difficult to recycle.

scholarly journals Vibroacoustic Assessment of an Innovative Composite Material for the Roof of a Coupe Car

2021 ◽  
Vol 11 (3) ◽  
pp. 1128
Author(s):  
Nunziante Cascone ◽  
Luca Caivano ◽  
Giuseppe D’Errico ◽  
Roberto Citarella
Keyword(s):  
Composite Material ◽  
Transfer Functions ◽  
Realistic Model ◽  
Point Of View ◽  
Damping Capacity ◽  
Geometry Structure ◽  
Fiberglass Composite ◽  
New Material ◽  
Static Rigidity ◽  
Innovative Material

The objective of this paper is the vibroacoustic evaluation of an innovative material for a sports car roof, aiming at replacing fiberglass composite materials. Such evaluation was carried out using numerical and experimental analysis techniques, with cross-comparison between the corresponding results. The innovative material under analysis is a composite material, with a thermoplastic polypropylene matrix and reinforcement made of cellulose fibers. In order to validate the virtual dynamic modeling of the new material, the inertance on different points of some sheets made of the material under analysis was evaluated by an in-house made experimental activity, performed in the CRF (Fiat Research Center) test room, and cross-compared with corresponding results from a numerical analysis performed with the MSC Nastran software. Then, a realistic model of the car roof of the Alfa Romeo 4C car, made with the new material, was implemented and analyzed from the vibroacoustic point of view. The mere switch to the new material, with no changes in the geometry/structure of the car roof, did not allow preserving the original values of static rigidity, dynamic rigidity, and configuration of modal shapes. For this reason, a geometric/structural optimization of the component was performed. Once the new geometry/structure was defined, a vibroacoustic analysis was carried out, checking for a possible coupling between the fluid cavity modes and the structure car body modes. Finally, the vibroacoustic transfer functions to the driver’s ear node were assessed, considering two different excitation points on the structure. The excellent damping capacity of the proposed material led to an improvement in the vibroacoustic transfer functions and to a reduction in the weight of the pavilion.

scholarly journals URBAN TERRITORIAL COMMMUNITIES AND THEIR INFLUENCE FORMING URBAN RECREATIONAL TERRITORIES / MIESTO TERITORINIŲ BENDRUOMENIŲ ĮTAKA REKREACINIŲ TERITORIJŲ FORMAVIMUI

2011 ◽  
Vol 3 (3) ◽  
pp. 30-37 ◽  
Author(s):  
Inga Urbonaitė
Keyword(s):  
Social Relations ◽  
Point Of View ◽  
Urban Structure ◽  
Surrounding Environment ◽  
Green Areas

Town green areas are very important elements of urban structure, it is used for leisure, recreation, buidling social relations. Their importance is measured not only from ecological point of view, but also from estetical and economical. It is important to understand, not only how recreation system influeces the surrounding environment, but also what should it be to meet urban territorial communities needs.

Beyond the Albanian–Slav Divide: Political Cooperation and National Identities in the Balkans at the Turn of the Twentieth Century

2019 ◽  
Vol 34 (1) ◽  
pp. 25-47
Author(s):  
Fabio Bego
Keyword(s):  
Twentieth Century ◽  
Political Activism ◽  
Point Of View ◽  
National Identities ◽  
The Balkans ◽  
Surrounding Environment ◽  
Recent Scholarship ◽  
Political Cooperation ◽  
The Impact

This article investigates how some prominent and less known Albanian activists perceived their Southern Slav neighbors at the turn of the twentieth century. The research explores the way in which the spread of nationalism conditioned the positioning of Albanians and Slavs in the process of identity construction and how such identities mirrored their reciprocal political claims. Recent scholarship has often emphasized that the affirmation of national ideas led to the fragmentation of Balkan communities by turning Albanian-speaking populations and their Slavic-speaking neighbors into “others.” My analysis expands this assertion by elaborating a theoretical approach that allows us to explore the impact of nationalism on the post-1878 Balkan context from a more dynamic point of view. National discourses did not only lay the foundation for a differentiation between the Balkan communities, but were also tools for promoting joint political activism. National activists often felt it necessary to cooperate in order to deal with the challenges posed by the surrounding environment, which was common to both Albanians and Slavs. Various contingent circumstances led Albanian activists to project long-term forms of coexistence with their neighbors, and to imagine forms of political, cultural, and social synthesis with the Slavs.

Experimental Programs: SMSG—one point of view

1962 ◽  
Vol 55 (6) ◽  
pp. 476-478
Author(s):  
Lillian Marlin
Keyword(s):  
Approaches To Learning ◽  
Point Of View ◽  
School Mathematics ◽  
Modern World ◽  
Study Group ◽  
Prime Mover ◽  
High School Mathematics ◽  
New Concepts ◽  
New Material ◽  
And Mathematics

The modern world, with its emphasis on science and mathematics, has given birth to new concepts in these fields. The dire need for trained mathematicians and an informed public resulted in the recognition of the need to incorporate into the study of mathematics new material and to present the old in a new light. The School Mathematics Study Group material is a prime mover in this field; it offers the new topics and language of elementary and high school mathematics, using modern approaches to learning.

The Cadusii in Archaeology? Remarks on the Achaemenid Period (Iron Age IV) in Gilan and Talesh

2013 ◽  
Vol 17 (2) ◽  
pp. 115-151
Author(s):  
Christian Konrad Piller
Keyword(s):  
Material Culture ◽  
Iron Age ◽  
Caspian Sea ◽  
Point Of View ◽  
Armed Conflicts ◽  
The South ◽  
The Caspian Sea ◽  
Material Basis ◽  
South West ◽  
New Material

According to some classical authors, the region south-west of the Caspian Sea was inhabited by the large tribe of the Cadusians (Greek Καδουσιοι, Latin Cadusii). During the Achaemenid Period, several armed conflicts between the Imperial Persian forces and the warlike Cadusians occurred. Of particular importance is the disastrous defeat of Artaxerxes II in 380 B.C. From the archaeological point of view, little has been known about the material culture of the Achaemenid Period (Iron Age IV) in Talesh and Gilan. Until recently, only a few burial contexts from the South of Gilan could be dated to the period between the 6th and 4th centuries B.C. However, during the last two decades, Iranian archaeologists excavated numerous Bronze and Iron Age graveyards in the Talesh Region. A number of burial contexts at sites, such as Maryan, Mianroud or Vaske can securely be dated to the Achaemenid Period. With this new material basis, it was possible to subdivide the Iron Age IV into different subsequent phases. Furthermore, it is likely that the material culture described in this article could be at least partially attributed to the Cadusians.

Study on the Advantages and Role of Soft Decoration Materials in Shaping the Indoor Environment Art Atmosphere

2014 ◽  
Vol 644-650 ◽  
pp. 4896-4899
Author(s):  
Wen Shi Mao
Keyword(s):  
Texture Analysis ◽  
Interior Design ◽  
Indoor Environment ◽  
Great Influence ◽  
Point Of View ◽  
Low Carbon ◽  
Indoor Space ◽  
New Material ◽  
Art Design

Modern decorative materials constantly updated and developed, and many of them are limited tube used for a time, and soon are replaced or eliminated. Soft adornment material can shape and express art atmosphere of indoor, having huge advantages and functions. In this paper, we research and analyze the soft adornment material from different point of view, and making catch-all category on the function of indoor soft adornment material that will be used in art design environmental. Soft adornment material has a great influence on the indoor space, such as people's sense of feel, smell, etc. Also from the angle of the color and design, as well as the texture analysis to analyze the utilization of soft decoration materials in interior design, and emphasized on low carbon green theme, highlighting the new idea of interior design, and also excusing the advantages of the new material.

scholarly journals Aplikasi Syariat Dalam Bisnis

2018 ◽  
Vol 25 (1) ◽  
pp. 56
Author(s):  
Hedher Tuakia
Keyword(s):  
Social Interaction ◽  
Economic System ◽  
Transition Point ◽  
Human Mind ◽  
Point Of View ◽  
Business System ◽  
Surrounding Environment ◽  
Material Benefits ◽  
Sense Of Satisfaction

Today there is a transition point of view to the conception of business / business. Some businesspeople no longer rely solely on the economic system adopted by capitalism (conventional) but also begin to direct their point of view on the economic / business system that can give satisfaction to the spiritual aspects or the satisfaction of the human mind. The traders in running their business do not merely get the highest material benefits, but they also want to get satisfaction. This is indicated by the adamnya sense of satisfaction if ternayata in running the business can be beneficial to the surrounding environment and for the purposes of social interaction. be friendly and tolerant to others and want to establish brotherhood among fellow traders and the surrounding community. That the motive or intention of the merchants in his business is to seek the blessing or pleasure of Allah SWT. Not just to maximize profits, as adopted by the conventional economic system. They practice what Rasulullah SAW has exemplified in his business by always being honest, trustful and tolerant.

scholarly journals Reduction of a model for sodium exchanges in kidney nephron

2021 ◽  
Vol 0 (0) ◽  
pp. 0
Author(s):  
Marta Marulli ◽  
Vuk Miliši$\grave{\rm{c}}$ ◽  
Nicolas Vauchelet
Keyword(s):  
Mathematical Analysis ◽  
Boundary Data ◽  
Point Of View ◽  
Asymptotic Result ◽  
Ionic Exchange ◽  
Surrounding Environment ◽  
Initial Layers ◽  
Epithelial Layers ◽  
Counter Current ◽  
Linear Hyperbolic System

<p style='text-indent:20px;'>This work deals with a mathematical analysis of sodium's transport in a tubular architecture of a kidney nephron. The nephron is modelled by two counter-current tubules. Ionic exchange occurs at the interface between the tubules and the epithelium and between the epithelium and the surrounding environment (interstitium). From a mathematical point of view, this model consists of a 5<inline-formula><tex-math id="M1">\begin{document}$ \times $\end{document}</tex-math></inline-formula>5 semi-linear hyperbolic system. In literature similar models neglect the epithelial layers. In this paper, we show rigorously that such models may be obtained by assuming that the permeabilities between lumen and epithelium are large. We show that when these permeabilities grow, solutions of the 5<inline-formula><tex-math id="M2">\begin{document}$ \times $\end{document}</tex-math></inline-formula>5 system converge to those of a reduced 3<inline-formula><tex-math id="M3">\begin{document}$ \times $\end{document}</tex-math></inline-formula>3 system without epithelial layers. The problem is defined on a bounded spacial domain with initial and boundary data. In order to show convergence, we use <inline-formula><tex-math id="M4">\begin{document}$ {{{\rm{BV}}}} $\end{document}</tex-math></inline-formula> compactness, which leads to introduce initial layers and to handle carefully the presence of lateral boundaries. We then discretize both 5<inline-formula><tex-math id="M5">\begin{document}$ \times $\end{document}</tex-math></inline-formula>5 and 3<inline-formula><tex-math id="M6">\begin{document}$ \times $\end{document}</tex-math></inline-formula>3 systems, and show numerically the same asymptotic result, for a fixed meshsize.</p>

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