• Journal of the Korean Home Economics Association
• /
• v.34 no.5
• /
• pp.283-292
• /
• 1996

This study examines the character of "Tencel" named as Ecology Fiber and investigates the fitness of it as the textile and the satisfaction in dress when its fastness is compared with that of Rayon classified into Celulose textile. Dye experiment selected 100% Tencel, Rayon for the samples, which were dyed into the direct dye and Turky Blue and Blue of the rective dye and were washed twelve times by the automatic washer. After that, the dye experiment examines the light, laundering, perspiration, rubbing and the composite fastness of the perspiration and hight in the lists of the dye fastness. The results are as follows: 1. The experiment of the color fastness, especially in T-blue of the direct dyestuff, requiring the twelve times-repeatedly-washing by the detergent says that the color fastness of Tencel is superior to that of the cellulose textile ; Rayon. 2. The experiment of the light fastness says that the fastness of Tencel is superior to that of Rayon. 3. The experiment of the laundering fastness says that all of Tencel, Rayon shows the excellent result in the direct dye than in the reactive dye. 4. The experiment of the rubbing fastness says that although Tencel, Rayon show the remarkable result in the desiccant experiment than in the humid one, the rubbing fastness of Tencel is superior to that of others. 5. The experiment of perspiration fastness says that Tencel, Rayon have the closely tightened tendency not to be altered through the acid and alkali perspirations. 6. The experiment of the composite fastness of perspiration and light indicates that the artifical perspirations, though the light lets the fastness of textiles weeken, do very slightly make them loosen, which does not offer the outstanding result. This whole result show that the fastness of Tencel is superior to that of Rayon. The Korean Fiber Enterprise in clothing should make the new and ecological fiber "Tencel" by means of the large amount of investment, and the technique of handing and controlling about it, considering that the dangerous needle of environmental pollution has been slackening the close-related ecological knots of the global environment. global environment.

• Journal of the Korean Home Economics Association
• /
• v.41 no.1
• /
• pp.249-257
• /
• 2003

For the efficiency in extracting gromwell colorant, methanol, ethanol and aceton were used as solvents. Also, to compare the results when dyed in various conditions and on various fabrics, the ratio of water-dye mixture, pH, temperature, and varieties of fabrics -wool, silk, cotton, nylon, ramie- were selected. L, a, b, ΔE, munsell and K/S value of each sample was measured and compared for the practical use. Water-dye mixture of 5:5 ratio showed the optimum dyeability. Not to mention wool and silk, but also cotton showed a satisfying dying result at the acidity of pH4. As the temperature increased, the dyeability of all three fabrics improved greatly. Especially, wool showed the highest improvement in terms of dyeability as the temperature increased. K/S values for wool and nylon showed superior results to the others in the gromwell colorant. The resulting color turned out somewhat different depending on the solvents used and the sort of fabric that was tested on. When the gromwell colorant extracted with methanol or ethanol was applied, the color of fabrics came out as purple or purpleblue. When the colorant extracted with acetone was used, the color of fabrics came out to be redpurple. The colorfastness to light showed low glades regardless to whichever solvents were used. The grades of colorfastness to laundering were recorded low numerical values, and its record became even lower when the gromwell colorant extracted with aceton was applied. The staining grade of the colorfastness to laundering showed a good grade in the range of 4 to 5. All the dyed fabrics showed a excellent drycleaning fastness.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.6 no.1
• /
• pp.9-15
• /
• 1982

The influence of builders on calcium deposition on the fabric was studied by laundering the cotton fabric with sodium carbonate, sodium metasilicate, sodium tripolyphosphate and built detergents in hard water. The laundry variables were: 1) Washing cycles: 5, 10, 20, 30 and 40 cycles. 2) Water hardness: 100 ppm, 150 ppm, 200 ppm and 300 ppm. 3) Builders: $Na_2\;CO_3,\;Na_2\;SiO_3$ and STPP. 4) Detergents: Na-DBS, $Na-DBS+Na_2CO_3,\;Na-DBS+Na_2\;SiO_3,\;Na-DBS+STPP,\;Na-DBS+Na_2\;CO_3+STPP$, and $Na-DBS+Na_2\;SiO_3+STPP$. The fabric was washed for 15 minutes at 23+$1^{\circ}C$ in a washing machine(Gold Star WP 3007) under the similar condition with those of home laundering, and rinsed 3 times in the same water hardness for 5 minutes. The calcium deposits on the fabric was determined by EDTA-BACK titration methods. The results of this study were as follows: 1) The amount of calcium deposits on the fabric was increased with increasing wash cycles. This deposit was due to the build up of insoluble calcium carbonate. 2) As the water hardness increased, the amount of calcium deposits on the fabric was increased. 3) Alkaline builders, such as, $Na_2CO_3$ and $Na_2SiO_3$, promoted calcium deposition on the fabric, however STPP prevented calcium deposition on the fabric. 4) Fabric laundered with $Na-DBS+Na_2CO_3$ showed the highest calcium deposits on the fabric, and decreased with the order of $Na_2CO_3$, $Na-DBS+Na_2SiO_3$, and Na-DBS. And fabrics washed with phosphate-built detergents showed a small amount of calcium deposition.

• The Journal of Natural Sciences
• /
• v.11 no.1
• /
• pp.159-164
• /
• 1999

The study was investigated to the effect of antimicrobial finishing of towel treated by organic antimicrobial agent. It was measured for the optimal condition such as treated time, treated concentration and temperature. After amtimicrobial treatment, mechanical and fastness properties, anti-laundering property were measured.The antimicrobial activity of samples was analyzed quantitatively by masureing the number of colonies of Staphylococcus aureus using the shake flask method. Towel samples treated with the optimal condition such as treated time of 10 minute, and treated temperature of $30^{\circ}C$, concentration of organic antimicrobial agent of 3.5% were shown a high reduction rate in the number of colonies grown and clear zones of inhibition.The effect of reduction rate for laundering until the number of 20 times was shown high reduction rate of over 80%. And the mechanical properties of samples treated with organic antimicrobial agent were not changed approximately.

• Journal of the Korea Institute of Information Security & Cryptology
• /
• v.9 no.4
• /
• pp.85-97
• /
• 1999

A blind signature scheme is a protocol allowing verifier to obtain a valid signature for a message m from a signer without him seeing the message. This means that the bank in collaboration with the shop cannot trace the electronic cash to user. However anonymous electronic cash also facilitates fraud and criminal acts such as money laundering anonymous blackmailing and illegal purchaes. Therefore in this paper we propose fair blind signature scheme based on KCDSA which is a domestic digital signature scheme and it apply a electronic cash system. In particularly a proposed electronic cash system have an anonymity control ability which trace a user who make use a electronic cash illegally in association with a trusted center.

• International Journal of Computer Science & Network Security
• /
• v.22 no.10
• /
• pp.145-154
• /
• 2022

Based on the obtained results of the study, the most problematic issues and legal conflicts are identified, which are related to the ratio of norms of domestic and foreign legislation, taking into account the requirements of the Constitution of Ukraine and the provisions of the Law of Ukraine "On international agreements". Along with this, it is stated in this scientific article that there are a number of provisions and examples of positive practice on the specified topic abroad and in international legal acts today, which should be used by Ukraine both in improving legislation on the issues of banking activity and in increasing the level of criminal legal protection of relevant critical infrastructure facilities, especially those that are substantively related to prevention and counteraction of activity, with regard to the legalization (laundering) of criminally obtained funds, financing of terrorism and the financing of the proliferation of weapons of mass destruction, which is quite relevant for our state, given the military conflict that is taking place on its territory in the Donbass. Again, in the same context, the need for more active cooperation between Ukraine and the FATF (international body developing a policy to combat money laundering) has been proven.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.12 no.1 s.26
• /
• pp.69-80
• /
• 1988

In this study, we have compared the relative importance of various washing condition affecting on soil release for P/C blended fabrics. P/C blended fabrics were soiled by the pad-dry method with aqueous and oily soil. The washing procedures of soiled samples were performed by Atlas Launder-Ometer with 27 wash conditions which are combinations of wash temp. wash time and detergent cone. The degree of soil-release was evaluated with CIE 1976 Lab color difference before and after washing. Multiple regression analysis was used to evaluate the optimum wash conditions and the relative importance of the factors providing maximum soilremoval.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
• /
• 2002.11a
• /
• pp.266-269
• /
• 2002

As a simulation or replacement of analog money in cyber space, the e-cash was introduced by using cryptographic primitives. Since a perfect anonymity system causes some illegal activities, such as money laundering, blackmailing, and illegal purchase, a revocable electronic system was paid a great attention to control the anonymity. In general, Trust Third Party(TTP) is introduced to detect any dubious user and coin, namely user tracing and coin tracing. In this paper we propose a new revocable anonymity e-cash system, and verify the security requirement as well. In our scheme a user first withdraws the e-coin from bank by using blind signature, and then TTP verifies the bank's signature and records the tracing information.

• Proceedings of the Korean Society of Dyers and Finishers Conference
• /
• 2008.04a
• /
• pp.117-119
• /
• 2008

This study was investigated for the dyeing properties of silk fabrics with Annatto Extract. The dye stuff was extracted by distilled water at 60$^{\circ}C$, 10minutes, 100:1 of bath ratio. The highest K/S value was showed at 25% dye concentration, 60minutes of dyed time at 50$^{\circ}C$ in the temperature. The post mordant conditions were better than that of pre mordant, especially post-Fe mordant showed highest K/S value. The laundering fastness was relatively good by Cu-mordant. Drying cleaning fastness appeared 4-5 grades.

• Fashion & Textile Research Journal
• /
• v.3 no.5
• /
• pp.455-465
• /
• 2001

Assessing soil removal is of interest to the washing machine industry because of government-mandated energy savings and changes in detergent formulation and consumer laundry practices. We designed this study to examine the laundry process from a holistic perspective by integrating factors perceived to be of importance. Our purpose was to assess the impact of selected variables (fabric and soil type, wash temperature and time. detergent amount, and degree of agitation) on soil removal using accelerated laundry conditions. We used the Taguchi method to develop the research design and ANOVA to analyze the data. Although soil removal was affected by fabric type, soil type, type and amount of detergent, degree of agitation, wash time and temperature, and water hardness and volume, wash temperature was the most significant variable.