• Transactions of the Korean Society of Mechanical Engineers
• /
• v.15 no.2
• /
• pp.424-435
• /
• 1991

To develop the photoelastic experiment method for the orthotropic material under pure torsional moment is the main objective of this research. In the development of photoelastic experiment for orthotropic material under pure torsional moment, the important problems and their solutions are the same as following. In the model material for photoelastic experiment, it was found that C.F.E.C.(Copper Fiber Epoxy Composite) can be used as the model material of photoelastic experiment for orthotropic material. In the stress freezing cycle, it was assured that stress freezing cycle for epoxy can be used as the stress freezing cycle of the photoelastic experiment for orthotropic material. In the slicing method, it was found that the negative oblique slicing method can be effectively used as slicing method in 3-dimensional photoelastic experiment. In the measuring method of stress fringe values and physical properties in the high temperature, it was found that stress fringe values can be directly measured by experiment and physical properties can be directly or indirectly by equation between stress fringe values and physical properties developed by author. In the stress analysis method of orthotropic material under pure torsional moment by photoelastic experiment, it will be studied in the second paper.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.25 no.9
• /
• pp.1645-1654
• /
• 2001

패션은 지속적으로 변화하며 이는 새로운 패션 트렌드의 출현을 의미한다. 특히 지난 1990년대 패션은 사회, 과학, 경제, 문화 등 사회환경의 급격한 변화로 새롭고 다양한 가치의 추구로 패션분야에서도 새로운 것에 대한 욕구가 급증하였다. 따라서 본 연구는 1990년대 패션 트렌드를 분석하여 패션의 특성을 파악하여 미래의 패션을 예측하고 대응하기 위한 자료를 구축하는 것을 목적으로 하였다. 패션트렌드는 향후 예측되는 유행테마, 스타일, 색채 , 소재 , 디테일 등을 제시하고 있는데 , 본 연구에서는 시대상을 보다 심층적으로 파악하기 위하여 패션테마만을 집중적으로 분석하고 고찰하였다. 일반적으로 패션테마로 제시되는 개념 이 나 용어들은 동시대의 사회현상과 패션 분야에서 요구될 것으로 예상되는 내용이 비교적 자유분방하게 제 시 하고 있으므로, 패션 테마의 분석과 고찰은 패션의 실체를 이해하는데 매우 유용하다 하겠다. 따라서 본 연구에서는 패션테마로 제시된 용어들을 수집하고 분석하여 , 패션경향는 물론 패션의 실체를 파악하고자 하였다. 연구 대상은 1990년대 10년간의 패션트렌드로 설정했으며, 분석자료는 구체적으로 국내패션정보사인 K·F·S와 S· F·I에서 제시한 트렌드지를 사용하였다. 연구결과 1990년대 패션은 종래의 상식적인 디자인 개념을 넘어서서 여러 가지 다채로운 스타일들이 역사적 시간과 여러 문화의 공간을 오가며 교류되는 포스트모더니즘적 인 특성을 강하게 나타냈으며 , 이러한 경향은 매우 깊고 광범위하게 1990년대 의 패션트렌드에 반영되어 나타났다. 최근의 첨단 과학 기술의 발달과 이에 반하는 자연으로의 회귀욕구와 인간의 본질을 추구하는 인식의 전환 또한 패션 트랜드에 영향을 주었다. 이들을 포용하는 패션 주제는 크게 자연주의, 세계주의, 미래주의, 복고주의 등으로 분석되었다. 이 와 같은 패션 테마들은 각각 독립 적 이 기보다는 서로 상호 보완하고 조화를 이루는 가운데 1990년대 패션으로 형상화되었다. 이러한 1990년대 패션 경향의 분석 결과는 동시대의 사회상을 반영하는 동시에 패션의 특징인 주기성과 반복성을 그대로 보여주고 있었다. 이러한 연구 결과는 패션의 특징을 파악하고, 21세기 패션 경향을 보다 정확하게 예측하고 제시할 수 있는 중요한 자료로 사용될 수 있을 것으로 기대한다.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.45 no.3
• /
• pp.163-166
• /
• 2000

Cassia mimosoides var. nomame was grown at five phosphate rates (0, 5, 15, 25 and 35 kg/10a) at Cheju in 1998 to determine the influence of phosphate rate on growth, forage yield and quality. As phosphate rate increased from 0 to 35kg/10a, the plant growth was increased such as days to flowering, plant height, the number of branches and green leaves per plant, stem diameter and SPAD (Soil Plant Analysis Development) reading values of leaves but the number of withering leaves per plant decreased. Fresh forage yield was 3, 291kg/10a at 0 kg/10a of phosphate rate and increased 5, 200 and 5, 230 kg/10a at 25 and 35 kg/10a of phosphate level, respectively. Dry matter, crude protein and total digestible nutrients (TDN) showed the same tendency of changes as the fresh forage yield. Crude protein, crude fat, nitrogen free extract and TDN content increased but crude ash and crude fiber content decreased as the increasing of phosphate rate increased.

• Textile Coloration and Finishing
• /
• v.29 no.4
• /
• pp.231-238
• /
• 2017

There are many kinds of elements and processes for the development of high quality bedding products like fiber, high-temperature heat treatment, dyeing process, tenter drying with softening agent and multiple final finishing. Especially we examined the mechanical characteristic properties of fabrics according to different yarn types. The critical physical properties of the yarn consisting the pile knitted fabrics were obtained for the development of the hi-grade bedding items. The material property and the exhaustion behaviour of the developed pile knitted fabrics composing of different yarns were measured and observed. The physical properties of the developed fabric were evaluated through the material property analysis of the yarn, the physical nature of the pile knitted fabrics and the data of the exhaustion performance; tensile strength, tensile elongation, tearing strength, cross section of yarn types, dyeing properties etc. And then high-class of bedding items were knitted using the double raschel machine to make the pile knitted fabrics.

• Korean journal of food and cookery science
• /
• v.30 no.1
• /
• pp.1-10
• /
• 2014

To evaluate the effect of dried barley sprout powder on muffins, muffins were made after they had been supplemented with barley sprout powder (0, 10, 20 and 30%(all w/w)). The moisture content, crude protein and crude lipid were reduced with an increase in barley sprout powder. The content of crude ash and crude fiber in the control group was significantly lower than those of the samples with barley sprout powder. The pH in the sample with barley sprout powder was lower than that of the control group. The highest specific gravity in the group with 30% of barley sprout powder was 0.84. No significant weight and baking loss rate changes were observed. The sample with no barley sprout powder showed the highest volume. The sample with 30% of barley sprout powder showed the highest uniformity. In color, the L-value and a-value of the control group were significantly higher than those of the other groups. Hardness, gumminess and chewiness of the control group showed the lowest value rather than the other groups. Springness and cohesiveness of the control group were significantly higher than those of the other groups. Crumb color, grass odor and bitter taste showed significant difference among groups. Acceptance of appearance, flavor, taste and total acceptability of groups with 10% and 20% of barley sprout powder did not show any significant difference when compared to the control group. Based on the above results, less than 20% of barley sprout powder would be proper to make muffins.

• Food Science of Animal Resources
• /
• v.38 no.5
• /
• pp.927-935
• /
• 2018

Various amounts of buckwheat powder (0%, 1%, 2%, and 3%) were added to emulsion-type pork sausages. The effects of buckwheat powder on the physicochemical characteristics of the emulsion type sausages, including proximate composition, cooking yield, viscosity, pH, instrumental color, texture profile analysis (TPA), and sensory evaluation, were determined. Increased levels of added buckwheat powder led to higher moisture (p<0.05), ash content (p<0.05 or >0.05), and cooking yield (p<0.05). However, the protein and fat contents of the sausage samples were lower (p<0.05) with higher levels of added buckwheat powder. The instrumental color and pH values were affected by the addition of buckwheat powder, which has a pH of 6.1 and associated color coordinates of $L^*=75.0$, $a^*=1.3$, and $b^*=8.7$. Meat batter with 3% buckwheat powder was shown the highest (p<0.05) viscosity indicating great formation of emulsion. There were no significant differences in the TPA among the treated samples. The viscosity value increased with increasing cooking yield in the batter ($r^2=0.7283$) i.e. the correlation coefficient between the two measurements was very high and positive. For sensory traits except for tenderness, the highest scores (p<0.05) was detected on sausages with 3% added buckwheat powder by a panel. These results suggest that the addition of 3% buckwheat powder to emulsion-type sausages produces a more beneficial meat product, with a lower fat content, greater formation of emulsion and no adverse effects on sensory properties.

• Korean Journal of Food Science and Technology
• /
• v.26 no.6
• /
• pp.799-804
• /
• 1994

A 0.625% dispersion of the pretreated konjac (Amorphophallus konjac) flour was treated with 3 volumes of ethanol and the precipitate was dried at room temperature to produce purified glucomannan in 67.2% yield. Konjac glucomannan was analyzed for proximate composition and the contents of total dietary fiber and minerals. TLC analysis with a mobile phase of isopropanol : $H_2O$(4 : 1, v/v) revealed the presence of mannose and glucose as component sugars. The molecular mass of konjac glucomannan was in the range between 240 and 370 kDa as determined by HPLC with a Protein Pak 300SW column. Water holding capacity of konjac glucomannan was greater than those of most other gums except guar and xanthan gums. Konjac glucomannan accelerated foam formation of bovine serum albumin. As the concentration of konjac glucomannan increased up to 2%, maximum viscosity increased drastically, whereas the swelling time at maximum viscosity decreased. When swelling temperature increased, maximum viscosity and the swelling time at maximum viscosity decreased simultaneously.

• Korean Journal of Food Science and Technology
• /
• v.37 no.3
• /
• pp.377-388
• /
• 2005

Effects of silkworm powder addition on rheological properties of dough and quality characteristics of bread were investigated. Protein content of silkworm powder was 53,98%, much higher than 12.46% of wheat powder, Crude fiber, fat, and pretense contents of silkworm powder were higher than those of wheat flour, Acid analysis revealed glutamic acid content was highest 4,046.16 mg thus, significant depreciation of breadmaking was expected due to weakened gluten structure or dough. Addition of silkworm powder(optimum at 2%) with pretense inactivated by heat treatment resulted in significant improvement of volume and bread quality, with external and internal scores close to those of the control.

• Korean Journal of Food Science and Technology
• /
• v.9 no.4
• /
• pp.291-294
• /
• 1977

Some chemical analysis of brewery's activated sludge were carried out in order to utilize it for animal feed. And results obtained were as follows. 1. Brewery's sludge, sun-dried for 3 days, contained 15.4% of water, 40.47 of crude protein, 4.02% of crude fiber, 13.3% crude ash and 19.4% nitrogen-free extract. 2. Total amino acid content of the brewery's sludge was 38% of its dry basis. The amounts, of all essential amino acids contained except tryptophan was enough for chicken growing and, especially, among the essential amino acids, the contents of leucine, isoleucine, phenylalanine, tyrosine, glycine and serine were two or three times as much as its need. 3. Other minerals contents except Magnesium and Cupper, were considerably low for animal feed.

• Journal of the Korea institute for structural maintenance and inspection
• /
• v.8 no.2
• /
• pp.247-258
• /
• 2004

The composite shell element is developed for the solution of undamped forced vibration problem of composite curved panels. The finite element used in the current study is an 4-node enhanced assumed shell element with six degrees of freedom per node. The composite shell element is free of both shear and membrane locking phenomenon by using the enhanced assumed strain(EAS) method. A modification to the first-order shear deformation shell theory is proposed, which results in parabolic thorough-thickness distribution of the transverse shear strains and stresses. It eliminates the need for shear correction factors in the first order theory. Newmark's direct integration technique is used for carrying out the integration of the equation motion, to obtain the repones history. Parametric studies of curved composite panels are carried out for forced vibration analysis by geometrical shapes and by laminated composite; such as fiber orientation, stacking sequence.