Investigation of Naturally Coloured Cotton of Different Origin – Analysis of Fibre Properties

Naturally coloured cotton is naturally pigmented fibre that grows in shades of brown and green. Because the colour is present in the fibres, fabrics made of them do not have to be dyed. The elimination of the dyeing process can save up to one half of the cost of preparing textiles and also lowers disposal costs for toxic dye waste dangerous to human health and the environment. In spite of the economic and ecological benefits resulting from the elimination of the dying process, the application of the naturally coloured cotton in the world textile industry is still limited. The low quality of fibres is considered as the most important reason for the limitation of naturally coloured cotton application. The aim of the work presented was to investigate the quality of naturally coloured cotton of different origin as well as to show the potential of the naturally coloured cotton as an excellent raw material for manufacturing ecological textiles of good quality and attractive design

Thermal-Insulation Properties of Multilayer Textile Packages

Thermal-insulation properties of textile materials play a significant role in material engineering of protective clothing. Thermal-insulation properties are very important from the point of view of thermal comfort of the clothing user as well as the protective efficiency against low or high temperature. Thermal protective clothing usually is a multilayer construction. Its thermal insulation is a resultant of a number of layers and their order, as well as the thermalinsulation properties of a single textile material creating particular layers. The aim of the presented work was to investigate the relationships between the thermal-insulation properties of single materials and multilayer textile packages composed of these materials. Measurement of the thermal-insulation properties of single and multilayer textile materials has been performed with the Alambeta. The following properties have been investigated: thermal conductivity, resistance and absorptivity. Investigated textile packages were composed of two, three and four layers made of woven and knitted fabrics, as well as nonwovens. On the basis of the obtained results an analysis has been carried out in order to assess the dependency of the resultant values of the thermal-insulation properties of multilayer packages on the appropriate values of particular components

Jakie są kulturowe uwarunkowania postaw proekologicznych?

Rozdział dotyczy kulturowych uwarunkowań postaw proekologicznych. Zwraca uwagę na ogólną prawidłowość, że dbałość o szeroko pojęte środowisko naturalne jest raczej domeną kultur kolektywistycznych, propartnerskich, reaktywnych, o orientacji długoterminowej, niż kultur indywidualistycznych, protransakcyjnych, czy linear-active, nastawionych przede wszystkim na realizację celów jednostki, rywalizację i maksymalizację indywidualnego poczucia szczęścia

Wybrane zagadnienia funkcjonowania organizacji wirtualnych – wymiar teoretyczny i empiryczny

This article consists of two parts. The first presents the concepts of creation and operation of virtual organizations, taking into account the dominant approaches and perspectives - structural and procesual. The activity of these organizations is possible since the rapid development of the Internet and the dissemination of information and communication technologies. (ICT), which is the transition from an industrial to a knowledge economy and information society. The second part provides an overview of selected empirical studies conducted in these structures, including the key issues for their formation and development. Based on a review of available empirical research conclusions are drawn regarding the operation of virtual organizations in the contemporary socio-economic reality

Zrównoważony rozwój miast – farmy miejskie jako przykład zaspokojenia potrzeb żywnościowych mieszkańców w kontekście logistyki miejskiej

Celem opracowania jest analiza problemu i opis dostępnych rozwiązań zabezpieczenia żywności dla mieszkańców miast wobec wyzwań rozwijających się metropolii. Dostarczanie żywności, tak jak dostawy innych artykułów do miast, nastręczają aktualnie wiele trudności. Kontekstem dla rozważań jest zarządzanie miastem, a w szczególności logistyka miejska, bo w jego ramach proponowane są rozwiązania dotyczące barier infrastrukturalnych, kongestii transportowej, czy urban sprawl. Jednym ze sposobów na ich zniwelowanie jest produkcja żywności na miejscu, która traktowana jest jako rozwiązanie zrównoważone. Opracowanie ma charakter interdyscyplinarny i zostało opracowane na bazie literatury z obszaru zarządzania miastem, logistyki miejskiej, rolnictwa miejskiego

Komunikacja społeczna, negocjacje, konflikt społeczny

Publikacja finansowana ze środków funduszy norweskich oraz środków krajowych w ramach projektu „EkoMiasto. Kształcenie na rzecz zrównoważonego, inteligentnego i partycypacyjnego rozwoju miast” (FSS/2014/HEI/W/0081)

Investigation of an Innovative “Cotton Hollow” Yarn

Cotton is a basic raw material processed in the textile industry all over the world. Some new cotton products have been developed thanks to the inventions and efforts of scientists and engineers dealing with cotton. One of the innovative cotton products is SPINAIR yarn by Kurabo (Japan). It is so called “hollow” yarn made of cotton and PVA fibres. PVA fibres are introduced into the yarn during the spinning process. Next they are dissolved and removed in fabric finishing, thanks to which in the final product the yarn is composed only of cotton fibres. The yarn has been developed to improve the thermal insulation of cotton fabrics. Due to the dissolving of PVA fibres, the structure of yarn and fabrics made of it is loose and porous. The air trapped inside the yarn between the cotton fibres increases the thermal resistance of fabrics. Within the framework of the work presented composite “hollow” yarn 42 tex made of cotton (80%) and modified PVA (Polyvinyl alcohol) fibres (20%) was investigated within the range of its structural, mechanical and technological parameters. Woven fabric was then manufactured with the application of the 42 tex CO80/ PVA20 yarn in the weft direction. Investigation of the manufactured woven fabric with Alambeta confirmed that fabric with weft yarn 42 tex CO80/PVA20 is characterised by a higher thermal resistance and warmer sensation while touching than that made of 42 tex cotton rotor yarn in the weft

Analysis of geometric structure of woven fabrics surface.

The geometric structure of the surface of textile materials is of significant functional, operational and aesthetic importance. The basic parameters of the woven fabrics’ structure are the following: weave, warp and weft density as well as warp and weft linear density. Roughness is one of the surface quality features most often assessed by quantitative indicators called surface roughness parameters. The aim of the presented research was to analyze the parameters characterizing the geometric structure of the surface of cotton woven fabrics with different weaves. Surface topography measurements were performed using the MicroSpy® Profile profilometer by FRT the art of metrology™. Using the Mark III software cooperating with the profilometer, a number of indices characterizing the geometric structure of the fabric surface and histograms illustrating the frequency of occurrence of points of a certain height on the tested surface were determined. The research confirmed that, on the basis of the results obtained with the profilometer, it is possible to analyze comprehensively the topography of the fabric surface

Moisture transport in cotton woven fabrics of different weaves and linear density of weft yarn

Cotton is the most common raw material of natural origin applied in clothing manufacturing. Clothing currently available on the market is usually made of plain weave fabrics. As part of this study, 3 pairs of cotton woven fabrics with different weaves (plain, twill 2/2 S, transverse rep 1/1) and different linear density of weft yarn (60 tex and 100 tex) were tested. The scope of research included determination of parameters characterizing the ability of fabrics to transport moisture in liquid form. The investigation was carried out on the Moisture Management Tester M290. The investigations allowed assessing the moisture transport of individual fabrics as well as the influence of both weave and linear density of weft yarn on the parameters characterizing the liquid moisture transport in the fabrics

Family therapy process : works on the Polish versionof SCORE-15 tool

Aim. The aim of the paper is to demonstrate progress of the works on the Polish version of SCORE-15 and the results of the preliminary data analysis of changes in the process of family therapy, obtained with this tool. The works on the Polish version, ongoing since 2010, were inspired by the Research Committee European Family Therapy Association EFTA. Since the Polish version of SCORE-15 will be make public and published on EFTA website in the near future, therefore, it is important that people interested in the tool know the context of its development. Methods. The Polish version of SCORE-15, the tool designed to examine the process of family therapy, was used. Results. The comparison of the results obtained by family members before the first family session and before the fourth one and psychotherapists’ assessments show that the perception of the weight of the problem with which the family members came to therapy is indeed significantly lower already after three sessions of family therapy. Additionally, the obtained results show great coherence of the assessment of the family therapy progress in families and their therapists. Conclusions. The preliminary analysis of data obtained during the research project conducted in Outpatient Family Therapy Clinic, Department of Adult, Child and Adolescent Psychiatry, University Hospital in Krakow and in Laboratory of Psychology and Systemic Psychotherapy, Department of Child and Adolescent Psychiatry, Jagiellonian University Medical College between 2010 and 2014 revealed that SCORE-15 is a useful tool in research on changes in the systemic family therapy process