scholarly journals ANALYSIS OF THE MECHANICAL PROPERTIES OF SOME HIGHTECH YARNS WITH DIFFERENT FUNCTIONS

2021 ◽  
Vol 2021 ◽  
pp. 287-292
Author(s):  
T. Sârbu ◽  
C.E. Stroe

We live in a knowledge-based society, which is facing an increasing impact of science and technology on all aspects of life through products, services and consumer needs. In the future, society will be oriented towards the individual and his needs, which will be more and more complex and varied. The present paper comparatively presents a series of variants of cotton fibre yarns: made of blended cotton fibres with ultra-high molecular weight polyethylene fibres; yarns of cotton fibres blended with regenerated cellulose fibres, that were functionalized with Ag ions and yarns obtained from fibre blends of recycled organic cotton, virgin cotton with recovered cotton fibres in order to observe their mechanical potential. The built-in functionalities allow their use in areas such as healthcare and hygiene, sports and leisure activities. The recovery of textile waste in a circular approach and the transition to a circular economy is an important direction for research. The repercussions that the consumption of raw materials in the textile industry has, on the environment, as well as on sustainability, determine us to reason in a judicious way when we select the different materials that we use in making the products.

2019 ◽  
Vol 70 (01) ◽  
pp. 37-41 ◽  
Author(s):  
ERDOGAN UMIT HALIS ◽  
DURAN HICRAN ◽  
SELLI FIGEN

Recently two significant topics that became important for textile industry namely ‘providing sustainability by reusing of textile wastes’ and ‘developing high-valued new textile raw materials. Cellulose, which is a fascinating polymer, has been used for years as a raw material to obtain various products such as papers, fibers and films. In this study, it is aimed to provide sustainability with recycling of cellulose from waste jute fibers, considering the amount of waste jute weft yarns released in the production process of machine carpets. For this purpose, pre-cleaning of waste fibers was carried out at first, and then extraction of cellulose was accomplished, and finally characterization of recycled cellulose was performed. Organic acid extraction method was effective for isolation of cellulose from waste fibers with 43.65% yield performance. Microscopic and experimental analyses confirmed that non-cellulosic part of waste fibers were removed successfully and recycled cellulose has similar structure with control cellulose. Our results suggest that, waste vegetable fibers can be used as a potential source for cellulose. Recycled cellulose can be used in the production of paper, composites, regenerated cellulose fibers and other industrial applications.


Author(s):  
Pavlov B.S. ◽  
Sentyurina L.B. ◽  
Pronina E.I. ◽  
Pavlov D.B. ◽  
Saraikin D.A.

The state policy of health preservation of Russians and the process of introducing a healthy lifestyle into their everyday life is hampered by the lack of sufficient self-activity and purposefulness of the individual ecological and valeological behavior of representatives of various population groups. According to the authors of the article, one of the important indicators of the maturity of professional and labor competencies of school and student youth is their readiness and desire for permanent self-preserving behavior. “With numbers in hand,” the authors show the scale of deviant deviations and the phenomena of spontaneous irresponsibility in the educational and leisure activities of students, hindering the preservation and development of physical culture, the accumulation and effective use of their psychophysiological and labor potential. The conclusions of the proposal of the authors of the article are based on the results of a number of sociological surveys conducted in 2000-2020. at the Institute of Economics of the Ural Branch of the Russian Academy of Sciences in a number of secondary schools and universities of the Ural and Volga Federal Districts.


Metals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 670
Author(s):  
Jaroslav Legemza ◽  
Róbert Findorák ◽  
Branislav Buľko ◽  
Jaroslav Briančin

This article deals with material research of selected types of quartz and quartzites in order to determine the priority of their use in the production of ferrosilicon and pure silicon, respectively. The highest quality quartzes and quartzites are commonly used in metallurgy, but not all types of these silicon raw materials are suitable for the production of ferrosilicon and pure silicon, despite their similar chemical composition. Behavior differences can be observed in the process conditions of heating and carbothermic production of ferrosilicon and silicon. These differences depend, in particular, on the nature and content of impurities, and the granularity (lumpiness) and microstructure of individual grains. The research focused primarily on determining the physicochemical and metallurgical properties of silicon raw materials. An integral part of the research was also the creation of a new methodology for determining the reducibility of quartzes (or quartzites), which could be used for real industrial processes and should be very reliable. The results of the laboratory experiments and evaluation of the physicochemical and metallurgical properties of the individual quartzes (or quartzites) are presented in the discussion. Based on comparison of the tested samples’ properties, their priority of use was determined. This research revealed the highest quality in quartzite from Sweden (Dalbo deposit) and Ukraine (Ovruč deposit) and quartz from Slovakia (Švedlár deposit). The use of these raw materials in industrial conditions is expected to result in the achievement of better production parameters, such as higher yield and product quality and lower electricity consumption.


2020 ◽  
Vol 1 (2) ◽  
pp. 6-17
Author(s):  
S. I. Kolbysheva ◽  

The article analyzes the phenomenon of aesthetic and art education in the context of postnon- classical culture, which most fully reflects the peculiarities of the worldview orientations and values of a modern man, and is a kind of reference point for determining the scientific and theoretical basis for the development of this phenomenon at the present time. The article reveals the reasons for strengthening the social role of aesthetic and art education, which connects it with the values of the family, leisure activities and informal education. Aesthetic and art education is considered as a “living” organism that is in constant motion, able to respond to sociocultural changes, and in its rhizomaticity does not ignore the heterogeneity of the surrounding world; as an integral component of education in general, which is found in the community of key tasks focused on “human creativity” in the context of value and meaning categories of culture. It is justified the shift from information and knowledge pedagogy to pedagogy of meaning, actualizing the importance of processes of self-identification, harmonizing the relationship between man and the world, itself based on the parity of dialogical forms of cognition; the transfer of dynamics of artistic and creative activities to the internal world of the individual and the updating on this basis of strategies of irrational thinking. In conclusion, the author is concerned about the level of humanitarian culture in the society and studies aesthetic and art education as an effective mechanism for its development, as a general cultural value internalized by society.


Author(s):  
Marcela Spišáková ◽  
Mária Kozlovská ◽  
Jozef Švajlenka

Construction industry creates an environment for people's lives. On the other hand, construction activities have a negative impact on various aspects of the environment. It consumes natural raw materials, significantly contributes to carbon footprint, waste, etc. Appropriate choice of constructional, material, technical, technological and environmental parameters of buildings can partially reduce this negative impacts. By designing, implementing and using wood-based constructions it is possible to reduce the negative impact in the area of construction waste generation. Currently, the construction market offers a large number of construction systems of wooden buildings, which have both strengths and weaknesses. In this paper are identified construction systems of wooden buildings offered on the Slovak construction market. The aim of the paper is a detailed identification of construction waste generation during the realization of particular wooden structures and monitoring of waste generation in production factory (off site) and on construction site (on site) during the construction of wooden buildings. Based on the obtained information, the individual construction systems of wood-based constructions are compared in terms of construction waste generation


2019 ◽  
Vol 24 (2) ◽  
pp. 271-300 ◽  
Author(s):  
Joshua Aboah ◽  
Mark M.J. Wilson ◽  
Karl M. Rich ◽  
Michael C. Lyne

Purpose The analysis of the concept of resilience in supply chain management studies mostly focuses on the downstream side of the value chain and tacitly assumes an unlimited supply of raw materials. This assumption is unreasonable for agricultural value chains, as upstream disruptions clearly have a material impact on the availability of raw materials, and indeed, are a common source of supply problems. This paper aims to present a framework for the operationalisation of the concept of socioecological resilience in agricultural value chains that incorporates upstream activities. Design/methodology/approach A citation network analysis was adopted to review articles. A conceptual framework is then advanced to identify elements of resilience and indicators relevant to tropical agricultural value chains. Findings There are limited studies that assess resilience in the food chain context. Flexibility, collaboration, adaptability and resourcefulness are key elements for assessing resilience at the individual chain actor level. However, the paper argues that adaptability is the relevant element for the assessment of resilience at an aggregate food system level because it considers the alteration of a system’s state of resilience. Practical implications The proposed framework and propositions accommodate stakeholder interactions in the value chain and could serve as a tool to guide the assessment of resilience in agricultural value chains. Originality/value This paper is one of the few to extend resilience to cover the socioecological interaction aspects for supply chains that yield the raw materials needed for continuity in channel-wide value creation processes.


2021 ◽  
Vol 9 (1) ◽  
pp. 70-78
Author(s):  
Ayed Zureigat ◽  
Osama Abdel Fattah

Background: It is well known that advancing age is accompanied by many negative feelings due to the feeling of loneliness and psychological emptiness, which leads to the individual feeling that society does not need him due to his weak physical abilities and thus this, will negatively affect healthy aging. Objective: The study aimed to investigate the effect of the leisure activities on the psychological stress among the elderly during Coronavirus (COVID-19) Outbreak. Design: To achieve this, we used the quasi-experimental approach on a sample consisting of 54, with the average age of (65.4±2.3) years. Divided into two groups 27 as a control group and 27 as the experimental group and this sample was purposively selected. Because of the home quarantine and to reduce face-to-face interaction, we used a questionnaire to measure the psychological stress level by using the Google form. The study tool consisted of 7 paragraphs associated with depression and 6 paragraphs associated with anxiety, finally 6 paragraphs associated with aggression. Before applying the experiment, the psychological stress was measured among the study sample, and then the leisure activities program was sent to the experimental group by the WhatsApp application. The researchers used means, standard deviations, paired and independent sample t-test by using SPSS version 24 with a confidence level of 95% (p<0.05). Results: The results of the study have shown that the level of the psychological stress among both groups came with a high average in the pre-measurement, as well as the anxiety domain that were the most affected in a positive way through leisure activities practicing. Additionally, there were statistically significant differences between the pre and post measurement among experiment group and favor of the post measurement. Conclusion: the leisure activities practicing among the elderly have contributed positively to reducing the level of psychological stress represented by depression, anxiety.


2020 ◽  
Vol 2 (2) ◽  
pp. 18-38
Author(s):  
Mohammad Fachrudin ◽  
Indah Puspitasari

The Import Facility for Export Purpose (KITE) is the Government's effort to encourage export performance. Companies that receive the KITE facility obtain fiscal incentives and export their product to import raw materials. The textile and textile product (TPT) industry is a strategic industry and has been determined by the Government as a pilot industry in the Roadmap for Making Indonesia 4.0. The textile industry relies on imported raw materials, so that the KITE facility is needed to encourage growth and increase product competitiveness in the international market. This study aims to determine the effect of the KITE facility, the rupiah exchange rate against the U.S. dollar, and the inflation rate on Indonesia's textile exports. We used a sample of 37 industrial textile companies in Indonesia that received the KITE facility  2016 to 2018. This study uses a panel data regression model with independent variables: KITE facility, exchange rates, inflation, and exported dependent variable. The results showed that the KITE facility had a positive and significant effect on the textile industry exports. In contrast, the exchange rate and inflation had a negative and significant impact on Indonesia's textile industry exports. This study's implications for the Government can be used to formulate a national strategy to increase export.


2018 ◽  
Vol 27 (5) ◽  
pp. 5-26 ◽  
Author(s):  
Viktória Vásáry ◽  
Dorottya Szabó

In the coming decades to achieve further progress in sustainable growth of agriculture, aquaculture, forestry and food industry in the CEE countries there is a need to face specific challenges through the lens of bioeconomy, thus by shifting the emphasis to research, innovation and transnational cooperation for knowledge-based development. A shared strategic research and innovation framework that has already been offered by the Central-Eastern European Initiative for Knowledge-based Agriculture, Aquaculture and Forestry in the Bioeconomy, i.e. by the BIOEAST Initiative might enable these countries to work towards the development of a sustainable bioeconomy while effectively joining the European Research Area. The study is aimed at conceptualizing bioeconomy, analysing key socio-economic indicators of the ‘BIOEAST countries’ bioeconomy and describing the implications for policymakers based on the results of the ‘BIOEAST Bioeconomy Capacity Building Survey’. Based on the results of the survey the major findings of the research verify and strengthen the objectives of the BIOEAST Initiative. The individual results of the survey in terms of major bottlenecks in the supply chain, missing elements hindering competitiveness, the opportunities to raise competitiveness and functions of the intervention system led to the conclusion that the creation of sustainable bioeconomy explicitly requires triple-helix stakeholders to find efficient collaboration mechanisms and build synergies.


2021 ◽  
Author(s):  
Abiola Ogunlusi ◽  
Olanrewaju Olaniyan

Abstract Sericulture has been seen in Rwanda as an opportunity for increasing raw materials for the textile industry. Therefore, it has provided a new source of income, reduced unemployment and most likely to improve the livelihood status of poor sericulture smallholder producers by increasing their income earnings. The high yield in silk production has been pleasing due to the favourable climatic conditions for mulberry cultivation, sericulture has been seen as a potential tool to reduce poverty and also to generate foreign exchanges from exportation. The broad objective of this paper focuses on the impact of the livelihood status of smallholder producers in Rwanda. Purposive and simple random sampling techniques were employed in selecting 286 sericulture households’ farmers in Gatsibo district. Data for this study were analysed using descriptive statistics, inferential statistics, paired-samples t-test, cross-tabulation and chi-square test of independence. The results of this study showed clearly a significant improvement in the livelihood of the farmers. It was gathered that 82% asserted there are organized markets available for silk exportation. 77% affirmed an improvement in their income status. The average level of income per year from cocoon production among the farmers was estimated to be $ 227.59. It is of topmost priority for this program to continue because its effect has a very positive impact on the livelihood status of the beneficiaries. Farmers should be provided with continuous training, access to credits. If sustained properly it will resolve future challenges and springs more opportunities for farmers and likewise to the country through exports.


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