The purpose of this article is expository in the main; critical to a lesser degree. It will attempt to show how Karl Marx, enraged by the imperfections and inhumanity of the…
Abstract
The purpose of this article is expository in the main; critical to a lesser degree. It will attempt to show how Karl Marx, enraged by the imperfections and inhumanity of the capitalist society, “fought” for its supersession by the communist society on which he dwelt so fondly, that society which would emerge from the womb of a dying capitalism. It asks such questions as these: Is it possible to create the truly human society envisaged by Marx? Is perfection of man and society a mere will‐o'‐the‐wisp? A brief analysis, therefore, of the imperfections of capitalism is undertaken for the purpose of revealing the evils which Marx sought to eliminate by revolution of the most violent sort. In this sense, the nature of man under capitalism is analysed. Marx found the breed wanting, in a word, dehumanised. An attempt is, therefore, made to discuss the new man of Marxism, man's own creation, and the traits of that new man, one freed at last from the alienating effects of private property, division of labour, money, and religion. Another question that springs to mind is this: how does Marx propose to transcend alienation?
Magdalini Soupioni and Alexandra Psarologou
The purpose of this paper is to evaluate the possibility of a new biocatalyst prepared by kefir cells immobilization on grape stalks (GS) to reduce quickly and efficiently the…
Abstract
Purpose
The purpose of this paper is to evaluate the possibility of a new biocatalyst prepared by kefir cells immobilization on grape stalks (GS) to reduce quickly and efficiently the Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) of the waste whey during its fermentation producing potable ethanol.
Design/methodology/approach
Many batch whey fermentations were carried out in order the effect of various conditions (pH, temperature) on 14C-labeled lactose uptake rate by the GS-immobilized kefir cells and consequently on fermentation rate as well as on ethanol production and whey BOD and COD reduction to be determined.
Findings
It has been illustrated that GS-biocatalyst was suitable for whey BOD and COD reduction by about 32 and 25 percent, respectively during whey alcoholic fermentation at 30°C and pH 5.5 in only ten hours, producing about 3.30 percent w/v of ethanol.
Originality/value
The findings of this research may enhance the existing literature on whey exploitation, for the first time focussing on the use of cheap and abundant GS as support for kefir immobilization during whey fermentation, which is potentially acceptable by industries in order to reduce fast and easily the whey polluting load and produce ethanol.
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Youngjoo Na and Jisu Kim
Women in Western Europe wore empire style robes which were made with a light and thin fabric revealing their body. To stress the silhouette of their body, they applied oil to it…
Abstract
Purpose
Women in Western Europe wore empire style robes which were made with a light and thin fabric revealing their body. To stress the silhouette of their body, they applied oil to it or sprayed water on the robe so that it would cling to the body, and most women suffered from muslin disease, meaning flu and tuberculosis of the lungs in winter season. The purpose of this paper is to examine the thermal insulation of the robe with spencer jacket in dry and wet environment through thermal manikin experiments.
Design/methodology/approach
Three kinds of spencer jacket were made based on historical evidence and data, and experimental work for thermal insulation was conducted using a thermal manikin. The study measured the total thermal resistance of dress-jacket set: weight of the clothing before and after wetting, thermal insulation of the spencer jackets and set of clothing in dry and wet conditions, electric power consumption of the set of clothing in the wet condition and temperature inside the clothing and surface temperature of the wet set of clothing.
Findings
The thermal insulation of the robe with spencer jacket in the wet condition was in the range of 0.135-0.144 clo, which was about 80 percent lower than the range of values of 0.73-0.79 clo measured in the dry condition. This means that women felt uncomfortable in wetting condition or raining environment even when wearing the robe with a spencer jacket. Thermal insulation of clothing was dependent to the air gap under garment, clothing layers, ventilation through fabric and body part.
Originality/value
In this study, the thermal insulation of an empire style robe with spencer jacket in wet condition was measured using a dry thermal manikin, not with the sweating manikin. The authors measure the electric power consumption according to drying time of the clothing set at the body parts. In order to study the effect of different materials and clothing wetting, comparison experiments were conducted in dry and wet conditions using the rinse cycle of washing machine.
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Khaled Mostafa and Azza El-Sanabary
This study aims to explore the incorporation of the authors previously prepared chitosan nanoparticles (CNPs) of size around 60-100 nm in the cross-linking formulation of viscose…
Abstract
Purpose
This study aims to explore the incorporation of the authors previously prepared chitosan nanoparticles (CNPs) of size around 60-100 nm in the cross-linking formulation of viscose fabrics to see CNPs impact in terms of imparting multi-functional characteristics such as tensile strength, dry wrinkle recovery angles and antibacterial properties.
Design/methodology/approach
CNPs of size around 60-100 nm were incorporated in cross-linking formulations for viscose fabrics, including different concentrations of glutaraldehyde as a non-formaldehyde cross-linking agent and magnesium chloride hexahydrate as a catalyst. The formulations were applied at different curing times and temperatures in 100 mL distilled water, giving rise to a wet pickup of ca. 85 per cent. The fabrics were dried for 3 min at 85°C and cured at specified temperatures for fixed time intervals in thermo fixing oven according to the traditional pad-dry-cure method.
Findings
The above eco-friendly method for finished viscose fabrics was found to obtain high dry wrinkle recovery angle and maintain the tensile strength of the finished fabric within the acceptable range, as well as antibacterial properties against Escherichia coli and Staphylococcus aureus as a gram-negative and gram-positive bacteria, respectively. Both, scanning electron microscope and nitrogen percent on the finished fabric confirm the penetration of CNPs inside the fabric structure. Finally, viscose fabrics pageant antibacterial activity against gram-positive and gram-negative bacteria assessed even after 20 washing cycle.
Research limitations/implications
CNPs with its flourishing effect with respect to cationic nature, biodegradability, reactivity, higher surface area and antimicrobial activity; in addition to glutaraldehyde as non-formaldehyde finishing agent can be used as multi-functional agents for viscose fabrics instead of DMDHEU, polyacrylate and monomeric composites as hazardous materials.
Practical implications
CNPs as cationic biopolymers were expected to impart multi-functional properties to viscose fabrics especially with obtaining reasonable dry wrinkle recovery angle and tensile strength in addition to antibacterial properties.
Originality/value
The novelty addressed here is undertaken with a view to impart easy care characteristics and antibacterial activities onto viscose fabrics using CNPs as antimicrobial agent and glutaraldehyde as non-formaldehyde durable press finishes to-replace the traditional formaldehyde-based resins. Besides, to the authors’ knowledge, there is no published work so far using the above cross-linking formulation written above.
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Kh.M. Mostafa, Heba Ameen, Mahmoud Morsy, Amal El-Ebissy, Mohamed Adel and Ali Salah
This study aims to explore the incorporation of starch nanoparticles (SNPs) in cross-linking formulation of cotton fabrics to see their impact on fabric performance like tensile…
Abstract
Purpose
This study aims to explore the incorporation of starch nanoparticles (SNPs) in cross-linking formulation of cotton fabrics to see their impact on fabric performance like tensile strength, dry wrinkle recovery angles, elongation at break, degree of whiteness and increase in weight as well as durability.
Design/methodology/approach
SNPs of size around 80-100 nm were successfully prepared from native maize starch by Nano precipitation technique and confirmed instrumentally by scanning electron microscope (SEM), transmittance electron microscope (TEM), Fourier transformer infrared (FTIR) spectroscopy and particle size analyzer. The latter were incorporated in cross-linking formulation of cotton fabrics encompassing different concentrations of citric acid and sodium hypophosphite at different curing time and temperature in 100 ml distilled water to a wet pickup of ca. 85 per cent. The fabric samples were dried for 3 min at 85°C and cured at specified temperatures for a specified time intervals in thermo fixing oven according to pad-dry-cure method.
Findings
FTIR spectra and SEM micrograph signified the chemical structure and surface morphology of cotton fabric before and after finishing in absence and presence of SNPs. Cotton fabric samples finished in presence of SNPs showed a higher tensile strength, elongation at break, comparable dry wrinkle recovery angles and degree of whiteness than that finished in their absence. On the other hand, the enhancement in the aforementioned performance reflects the positive impact of incorporation of SNPs in textile finishing especially with strength properties; which are one of the important requirements for industrial fabrics that can be used widely in heavy-duty applications.
Research limitations/implications
SNPs with its booming effect with respect to biodegradability, reactivity and higher surface area can be used as a novel reinforcement permanent finish for cotton fabrics instead of more hazardous materials likes poly acrylate and monomeric compounds.
Practical implications
As SNPs biopolymers is one of the important reinforcement agents, so it was expected that it would minimize the great loss in strength properties during easy-care cotton finishing and improve the fabric performance.
Originality/value
The novelty addressed here is undertaken with a view to remediate some of the serious defects of easy-care cotton fabrics using poly carboxylic acids; especially with the great loss in strength properties by virtue of using SNPs as a permanent finish. Besides, to the authors’ knowledge, there is no published work so far concerning the use of SNPs as an innovative base for production of easy-care finished cotton textiles with high performance.
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Inanç Işil Duman and Rengin Zengel
The main axes of this study, which is differentiated from contemporary architecture studies as the first academic work in the scope of post-occupancy evaluation floating spaces…
Abstract
The main axes of this study, which is differentiated from contemporary architecture studies as the first academic work in the scope of post-occupancy evaluation floating spaces, are based on evaluating the spatial satisfaction and the meeting of these expectations by its users. A post-occupancy evaluation (POE) yielded a dataset of 117 yacht-users for whom demographic information, activities, and length-of-stay were recorded. This paper reports the study conducted on 78 yachts in Turkey, focusing particularly on the physical design features. The questionnaire is based on the observation and applied as post-occupancy evaluation on the examples of yachts from Turkey. It also questions the effect of the sea on the spatial perception and evaluates the user satisfaction of the interiors and exteriors of yacht spaces. Assessment on the physical design of yacht interiors from the perspective of the staff and the owner is the method to understand their expectation, preferences and experiences. In addition, the satisfaction of different user groups and general evaluation of spaces are explained within the graphics that include the data and analysis which are obtained from the interviews. Empirical results indicate that different user categories (owner and staff) that are presented in the scope of the post-occupancy evaluations (POE) have different satisfaction levels. Findings of this study demonstrate that the difference of satisfaction levels between the users caused different space needs and expectations from their spaces. Although floating spaces have unconventional environmental specifications from the terra architecture, high level of satisfaction in yachts shows that the floating spaces should be evaluated with the scope of their spatial characteristics, in consequence of the spatial perception on the sea and the psychological concepts. In conclusion, the management implications of the study are discussed.
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Kh M. Mostafa and A.A. El-Sanabary
This study aims to use multi-functional viscose fabric that was facilely developed with with respect to ease and care characteristics, reinforcement effect and antibacterial…
Abstract
Purpose
This study aims to use multi-functional viscose fabric that was facilely developed with with respect to ease and care characteristics, reinforcement effect and antibacterial activity by using novel echo friendly antibacterial finish based on citric acid/sodium hypophosphite and the authors’ previously tailor-made poly meth acrylic acid (MAA)-chitosan graft copolymer via alternative microwave curing approach instead of traditional high-temperature cure one.
Design/methodology/approach
Viscose fabric was paddled twice in the cross-linking formulations containing different concentrations of citric acid, poly (MAA)-chitosan graft copolymer and sodium hypophosphite to 90 % wet pick up and dried at 100°C for 3 min in an electric oven. Then, the treated fabrics were placed on the disk spinner of the microwave oven and cured at different power (100–800 Watt) for various durations (60–180 s). The fabric was then water-rinsed and dried at ambient condition before use.
Findings
Results revealed that the above echo friendly method for finished viscose fabrics was found to achieve relatively high dry wrinkle recovery angle and maintain the loss in tensile strength within the acceptable range, as well as antibacterial activity against Escherichia coli and Staphylococcus aureus as a gram-negative and gram-positive bacteria, respectively; in addition to durability up to ten washing cycles. Furthermore, scanning electron microscope images, nitrogen content and add on % of the finished fabric confirmed the penetration of grafted chitosan inside the fabric structure. The tentative mechanism for these reactions is advocated.
Originality/value
The novelty addressed here is undertaken with the advantages of using citric acid as a nonformaldehyde, safe and cheap poly carboxylic acid as a crosslinking agent and sodium hypophosphite as a potential catalyst, in addition to the authors’ noncitable multifunctional echo friendly tailor-made poly (MAA)-chitosan graft copolymer for imparting reinforcement and antibacterial characteristics to viscose fabric that uses the pad-dry/cure microwave fixation for progressively persuaded heat within the fabric during curing.
Research limitations/implications
This was done to see the impact of microwave as green and efficient tool with respect to reduction in organic solvents, chemicals and exposer time as well as fixation temperature on the finishing reaction in comparison with traditional pad-dry-cure method.
Practical implications
Poly (MAA)-chitosan graft copolymer as amphoteric biopolymer was expected to impart multifunctional properties to viscose fabrics especially with comparable dry wrinkle recovery angle and minimize the loss in tensile strength in addition to antibacterial properties in comparison with untreated one.
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Anil Kumar Jain and Addisu Ferede Tesema
The purpose of this paper is to establish a suitable procedure for producing antimicrobial 100 per cent cotton textiles using zinc pyrithione. Zinc pyrithione being bacteriostatic…
Abstract
Purpose
The purpose of this paper is to establish a suitable procedure for producing antimicrobial 100 per cent cotton textiles using zinc pyrithione. Zinc pyrithione being bacteriostatic in nature is eco-friendly and safe, both for manufacturer to apply and consumer to use.
Design/methodology/approach
After conducting laboratory trials, bulk trial has also been conducted, and efficacy of zinc pyrithione as bacteriostatic has been quantitatively determined. The durability of antimicrobial finish was also checked before and after repeated domestic laundry.
Findings
The findings indicated that it is possible to produce durable antimicrobial 100 per cent cotton textiles in bulk using zinc pyrithione.
Research limitations/implications
Any exporting textile processing mill can directly use the findings of this work and can produce antimicrobial textiles in their factory.
Practical implications
Any exporting textile mill can increase their export earnings by producing antimicrobial textiles. The antimicrobial textiles are in great demand in Asia-Pacific region and have already touched exports of US$497.4m in 2015 and is projected to reach US$1,076.1m by 2026.
Social implications
The textile user can get protection against pathogenic or odour-causing microorganisms using this hygiene finish in different end uses.
Originality/value
The work is original. Very few references are available on zinc pyrithione. First, laboratory studies were done, and bacteriostatic properties of zinc pyrithione were determined quantitatively followed by bulk trial.