• Fibers and Polymers
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• 제5권4호
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• pp.297-302
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• 2004

In many engineering applications, the final decision is based on the evaluation of a number of alternatives in terms of a number of criteria. This problem may become very intricate when the selection criteria are expressed in terms of different units or the pertinent data are difficult to be quantified. The Analytic Hierarchy Process (AHP) is an effective way in dealing with such kind of complicated problems. Cotton fiber is selected or graded, in the spinning industries, based on several quality criteria. However, the existing selection or grading method based on Fiber quality Index (FqI) is rather crude and ambiguous. This paper presents a novel approach of cotton fiber selection using the AHP methodology of Multi Criteria Decision Making.

• 패션비즈니스
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• 제15권1호
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• pp.115-128
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• 2011

The purposes of this study were to identify the effects of women's attitudes, selection, and wearing experience on purchasing intention of underwears made of smart fibers. Most women wore brassieres when going out and preferred moulded cup brassieres, but neglected wearing corsets. Age and marital status of women affected on women's attitudes toward underwear. Younger women in 20's preferred underwears made of smart fibers such as high hygroscopic and older women in 40's preferred conservative underwear. Most women had experienced stretchy underwear and wearing experiences of smart fiber underwears were positively related to purchasing intention. Underwear wearing experiences affected positively on purchasing intention of smart fiber underwears but some functions such as design and comfort affected negatively.

• 한국윤활학회:학술대회논문집
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• 한국윤활학회 1999년도 제30회 추계학술대회
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• pp.208-212
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• 1999

In the use of glass fiber reinforced plastics(GFRP), cutting is often necessary. But the most of past studies have been interested in the effect of fiber orientation on tool wear. In this study, the effects of fiber contents on tool wear were investigated experimentally. By proper selection of cutting tool, the variables are cutting speed and fiber contents of 10, 20, 30wt% with fixed feed rate and depth of cut.

• 한국작물학회지
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• 제3권
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• pp.99-107
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• 1965

대마의 섬유함량을 높이기 위한 효과적인 선발방법을 구명하고 이품종간 제1차섬유 및 제2차섬유함량을 조사하며 착뇌기의 섬유함량과 성숙기 섬유함량 및 제1차섬유함량과 전섬유함량과의 상관관계 및 회귀관계를 검정하고자 Italy 종ㆍ일본종 및 한국재래종 등 13품종을 공시하여 실험하였는데 그 적요는 다음과 같다. (1) 섬유함량의 이품종간 차이에 있어서 건경대 전건섬유함량을 보면 웅주의 성숙기에 있어서 Italy종은 12.09∼26.71%(평균 20.77%)였고 일본종은 14.24%이었으며 한국재래종은 6.59∼16.79%(평균 10.34%)이었는데 Italy종은 일본종 및 한국재래종보다 월등히 섬유함량이 높았고 일본종은 Italy종보다는 낮았으나 한국재래종보다는 약간 높았다. 자주의 성숙기에 있어서도 웅주와 비슷한 경향으로 Italy종이 제일 높고 일본종이 중간 정도이며 한국재래종이 제일 낮았다. (2) 자주와 웅주의 평균 전섬유함량차이에 있어서는 Italy종에 있어서 웅주 20.77%, 자주 20.96%였고 일본종에서는 웅주 14.24%, 웅주 15.43%였으며 한국재래종은 웅주 10.34%, 자주 16.79%로서 일반적으로 자주는 웅주보다 높은 섬유함량을 가지고 있었다. (3) 웅주에 있어서 개화직전 착뇌기와 개화후 성숙기의 섬유함량의 상관관계 및 회귀관계는 r=0.94＊＊ Y=0.28∼1.03X였으므로 착뇌기 섬유함량과 성숙기 섬유함량간의 상대적차이가 서로 일치함을 알 수 있었다. 그러므로 조기검정에 의하여 착뇌기에 고섬유함량인 개체를 선발하면 섬유함량이 높은 품종을 육성할 수 있으리라고 생각되었다. (4) 대마 제1차섬유함량과 전섬유함량간에 r=0.913＊＊ Y=12.01+1.20X의 정상관관계 및 회귀관계가 있었다. 그러므로 제1차섬유함량이 많은 것만 선발하면 전섬유함량이 많은 것을 선발할 수 있을 것이므로 선발의 작업량을 경감시키기 위해서 제2차섬유함량은 조사하지 않아도 된다고 생각되었다. (5) 대마경의 횡단면을 조사하였는데 고섬유함량인 Italy종은 일본종 및 한국재래종보다 본질부가 차지하는 면적이 월등히 적고 제1차 및 제2차섬유가 차지하는 면적이 많았다. 따라서 고섬유함량인 대마의 품종개량에 있어서는 가능한 한 본질부가 차지하는 면적은 축소시키고 제1차 및 제2차섬유가 차지하는 면적은 증대시켜야 할 것으로 본다.

• Asian-Australasian Journal of Animal Sciences
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• 제21권10호
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• pp.1529-1534
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• 2008

The aim of this study was directed at exploring the possible use of muscle fiber characteristics as new selection traits for improving both porcine lean meat production and quality. A total of 174 (114 Yorkshire, 30 Landrace, and 30 Meishan) pigs were used for this study, and lean meat production ability was estimated by backfat thickness and loin eye area. The Longissimus dorsi muscle was taken in order to measure meat quality and muscle fiber characteristics. Due to the high correlations between total muscle fiber number and most of the performance traits, all pigs were classified into three groups (low, intermediate, or high) by total muscle fiber number using cluster analysis. The high group had the highest loin eye area (p<0.001). The meat quality traits were within normal ranges as reddish pink, firm, and nonexudative (RFN) pork, but the groups classified as intermediate and high had relatively large drip loss percentages (p<0.05), produced more than twice the amount of pale, soft, and exudative (PSE) pork as compared to the low group. The group with a high total muscle fiber number was further classified, based on type 2b fiber percentage, into low or high groups by cluster analysis. The results showed that the low type 2b fiber group had good loin eye area (p<0.05), small drip loss (p<0.05), and did not produce PSE pork. For these reasons, a high total muscle fiber number, with a low percentage of type 2b fibers, may be suitable in selecting for improvements in both lean meat production and meat quality.

• Journal of Advanced Marine Engineering and Technology
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• 제32권6호
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• pp.915-922
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• 2008

The gas separation technology using membrane is widely used to refine various gases in many industry fields and recently is being applying in $CO_2$ recovery technology. In the gas and chemical tanker. nitrogen generators for inerting, purging and padding are on board and most of them have membrane modules of hollow fiber type with long life and vibration resisting properties. Because a membrane module is a key component accounting for 50% of total manufacturing cost of nitrogen generator, adequate selection for it is an important problem. In this paper, the flow performance coefficient based on dimension and specification data of membrane module was relatively selected to compare nitrogen generating capacity of module and various performance tests about the selected PARKER ST6010 membrane module were conducted. As a result, the useful coefficient and basic data in selecting a membrane module were achieved.

• 한국식품위생안전성학회지
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• 제7권4호
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• pp.153-163
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• 1992

Dietary fiber imparts both mutritional and functional properties to foods. This review deals with (1) the classification of dietary fiber, (2) the plant cell wall models, (3) the relations between structure and physicochemical and functional properties of dietary fiber and (4) the applications of dietary fiber in foods. Dietary fiber can be classified in terms of source, plant function, solubility, charge and topology. Plant cell wall models are presented to provide information on the interconnections of dietary fiber components which determines the content of soluble and insoluble dietary fiber content. In reality, physicochemical and functional properties of dietary fiber originate factors such as chemical constituents , charge, branching degree, conformation and etc. Dietary fibers possess a variety of functional properties in food systems, which thus make them useful in food application. In particular, rheology and gelation of water-soluble gums or hydrocolloids are discussed for their effects on food quality. A guideline s also listed for the gum selection to meet the best product requirements.

• Asian-Australasian Journal of Animal Sciences
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• 제19권1호
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• pp.13-18
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• 2006

Two different animal models, which differ in whether or not taking maternal genetic effect into account, for estimating genetic parameters of cashmere weight, live body weight, cashmere thickness, staple length, fiber diameter, and fiber length in Inner Mongolia White Cashmere Goat were compared via likelihood ratio test. The results indicate that maternal genetic effect has significant influence on live body weight and cashmere thickness, but no significant influence on the other traits. Using models suitable for each trait, both genetic parameters and trends were analyzed with the MTDFREML program. Heritability estimates from single trait models for cashmere weight, live body weight, cashmere thickness, staple length, fiber diameter and fiber length were found to be 0.30, 0.07, 0.21, 0.29, 0.28 and 0.21, respectively. Genetic correlation estimates from two-trait models between live body weight and all other traits (-0.06~0.07) was negligible, as were those between fiber diameter and all other traits (-0.01~0.03) except cashmere thickness (0.19). Cashmere weight and staple length had moderate to low genetic correlations with other traits (-0.24~0.39 and -0.24~0.34, respectively) except for live body weight and fiber diameter. Cashmere thickness had a strong genetic correlation with fiber length (0.81), and low genetic correlation with other traits (0.19~0.34) except live body weight. Genetic trend analysis suggests that selection for cashmere weight was very effective, which has led to the slow genetic progress of cashmere thickness and fiber length due to their genetic correlations with cashmere weight. The selection for live body weight was not effective, which was consistent with its low inheritability.

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 1997년도 추계총회 및 학술발표회 논문집
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• pp.325-329
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• 1997

• 한국정밀공학회지
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• 제33권6호
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• pp.447-452
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• 2016

The simulation of Carbon fiber reinforced polymer (CFRP) machining facilitates the selection of optimal cutting parameter for high machining efficiency and better surface quality. In this study, This paper proposes a dual-dexel model to represent the fiber laminate with computational geometry method to calculate the fiber length removed per revolution and fiber cutting angles. A flat end milling simulation software is developed in C# to simulate and display the CFRP milling process. During simulation, fiber lengths, fiber cutting angle and engaged cutting angle can be displayed in real-time. A CFRP plate with different angles in different layer is used to compare the simulation results.