• The Korean Journal of Food And Nutrition
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• v.25 no.2
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• pp.330-337
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• 2012

The aim of this study was to evaluate the status of consumption and consumer satisfaction of dietary fiber supplements. The survey was conducted using a self-recorded questionnaire developed to meet the purpose of this study. The characteristics of the subjects who have taken dietary fiber supplements in the past are as follows: distributions of socioeconomic variables showed that the highest-ranked group(the group that reported the highest consumption of dietary fiber supplements) was professionals with a college degree or higher degree. In addition, the highest-ranked group were the most healthy, nonsmokers and reported drinking habits of '1~2 times/week'. Regarding the health status of those surveyed, digestive disease and constipation were the most common complaints. The majority responded with 'health concerns' to the question that asked the reason for their purchase of the dietary fiber supplements. Three major places respondents could find dietary fiber supplements were 'through the internet', 'the market', 'the pharmacy' in descending order. The compositions of dietary fiber products varied. 'konjac', 'cellulose', 'psyllium husks' were the most popular components consumed by the subjects. The average duration of product consumption was less than one month. In terms of satisfaction levels(satisfaction was ranked from 1 to 5), 'taste' and 'type' scored the highest in satisfaction levels while 'price' ranked the lowest. When subjects were asked about self-awareness regarding the physiological efficacy of dietary fiber supplements, the responses were positive in 'bowel movement' and 'weight loss'. Further research is required to improve the quality of dietary fiber supplements in order to assist consumers in selecting the appropriate products.

• Journal of the Korean Wood Science and Technology
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• v.27 no.3
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• pp.99-116
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• 1999

Wooden hollow core flush door is one of the main products of furniture manufacturing and woodworking industries. Warping and buckling of the door is serious problems in service. It has been reported that warping is caused by differences of physical and mechanical properties of face and back of skin panel for the door. This study focused on the prediction of warping and buckling phenomena of the flush door using numerical models. Predictions from the models were also compared with the experimental results obtained from the doors with plywood and hardboard skin panels under various environmental conditions. Three elastic constitutive models, so called elastic beam model, plate model and plate-buckling model, were employed to predict warping and buckling of the doors. It was observed that warping was more pronounced in low humidity condition than in high humidity condition. The plate model considering Poisson's effect was reliable to predict warping more closely than elastic beam model in low humidity condition. The plate-buckling model, however, was the best in the fitting of predictions with the experimental results under high humidity condition because buckling was developed in face and back of skin panel at that condition.

• Proceedings of the Korean Journal of Food and Nutrition Conference
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• 2000.12a
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• pp.53-53
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• 2000

최근 복분자(산딸기)의 효능을 이용한 일반식품 및 기능성 식품 등의 제품 개발이 활발히 추진되고 있다. 따라서 본 연구에서는 식품차원의 연구분야 일환으로서 먼저 복분자의 일반성분, 유리당, 유리아미노산, 무기성분 및 향기성분 등을 보고한 후 앞으로 생리 활성 연구 분야에 초점을 두고 연구를 진행할 하여 학문적 자료 및 산업에 응용할시 기초자료로 활용하고자 한다. 복분자의 수분은 5.39%, 총당은 17.3%, 환원당은 8.6%, 조단백질 10.6%, 조회분은 4.5%, 조지방은1.7%, 조섬유는 3.9%이고, 유리당 함량은 sucrose 1.52%, fructose 3.98%, glucose 1.24%이고, 유기산 함량은 citric acid 10.2%, oxalic acid 6.29%로 가장 많이 함유하고 있었고, 그 다음은 malic acid 1.94%였다. 총 아미노산은 7914.1mg%이고, 필수아미노산 함량은 2622.5mg%로 나타났다. 복분자에 가장 많이 함유되어 있는 아미노산은 aspartic acid 1260.3%, 그 다음은 glutamic acid 1054.3% 순으로 함유하고 있었다. 무기성분 K가 387mg으로 가장 많이 함유되어 있었고, 복분자에서 총 52종의 성분이 화인되었는데 확인된 성분들은 관능기별로 분류하면 amylalcohol를 포함한 alcohol류 11종, valeric acid를 포함한 acid류 13종, hexanal를 포함한 carbonyl류 20종, 2-heptanone를 포함한 hydrocabon류 5종 그리고 methyl palmitate를 포함한 ester류가 3종 이었다. 관능기별로 확인된 성분들의 총 peak area%를 살펴보면 alcohol류 11.56%, acid류 38.87%, hydrocarbon류 2.89%, ester류 0.80%, 총 70.32%가 확인되었다. Alcohol류에서 linalool가 3.78%, acid류에서는 caproic acid류가 14.40%, carbonyl류에서 2-hydroxy-4-methoxyacetophenone이 2.99%, hydrocabon류에서는 aromadendrene가1.59% 그리고 ester류에서는 methyl palmitate가 0.43%으로 가장 많이 함유하고 있었다.

• Proceedings of the Korean Society of Postharvest Science and Technology of Agricultural Products Conference
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• 2003.10a
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• pp.171-171
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• 2003

발아현미란 적당한 온도와 수분, 산소 등을 공급해 현미의 싹을 1~5 mm까지 발아시킨 것으로 현미의 영양과 기능을 극대화시키면서 식미는 현미보다 훨씬 부드러운 쌀이다. 발아현미 등 발아곡식이 주목받기 시작한 것은 1993년 독일의 한 식품연구소에서 곡식의 발아시 발아전에는 없던 새로운 영양성분이 생겨나거나 증가한다는 연구발표가 계기가 되었다. 현미에는 식물성 섬유질을 비롯한 각종효소, 비타민, 미네랄 등 영양소가 다량 함유되어 몸에 좋다는 것은 널리 알려진 사실이다. 그러나 현미가 갖는 뛰어난 효능에도 불구하고 백미를 주식으로 하고 있는 이유는 현미의 조리가 어렵고 부드럽게 씹히지 않고 꺼칠하여 식미가 떨어지기 때문이다. 이러한 현미의 문제점을 개선하여 풍부한 영양을 고루 섭취하고 간편한 취사와 부드러운 조직감으로 식미 기호도를 높인 발아현미가 등장하였다. 따라서, 찹쌀과 멥쌀 발아현미에 대한 영양성분과 품질특성을 조사하여 발아현미밥 및 가공제품 개발에 대한 기초자료로 제시하고자 한다. 4$0^{\circ}C$에서 20시간 발아시킨 찹쌀 발아현미(수분함량 15.45%)와 멥쌀 발아현미(수분함량 15.02%)의 품질 특성중 amylose 함량은 각각 4.9%, 17.9%, 환원당은 4.91%, 2.28%, 유리당은 찹쌀 발아현미가 glucose 0.42%, sucrose 0.15%, maltose 0.27%이고 멥쌀 발아현미가 glucose 0.59%, sucrose 0.50%, maltose 0.24%였다. 찹쌀과 멥쌀 발아현미의 색차값은 각각 L값 60.30, a값 2.12, b값 23.52과 L값, 59.51, a값 3.15, b값 23.04이다. 호화도는 1.67%, 5.21%이고, 조직감중 hardness는 7.53 kgf, 8.93 kgf로 멥쌀 발아현미가 높았다. 찹쌀 발아현미의 아밀로그램 특성은 호화 초기온도가 42$^{\circ}C$였으며, breakdown값은 94, set back값은 -48이었으며, 멥쌀 발아현미의 특성은 호화 초기온도가 7$0^{\circ}C$였으며, breakdown값은 0, set back값은 123이었다. 비타민 E 함량은 찹쌀 211.79 $\mu\textrm{g}$/kg, 멥쌀 310.59 $\mu\textrm{g}$/kg이고, 총식이섬유 함량은 4.21%, 3.17%이다. 발아현미 원곡간의 향기패턴은 차이가 나지 않았으며 발아현미 제조 후 찹쌀, 멥쌀 모두 이취 성분은 거의 없었다. 발아현미의 절단 내면 미세구조를 관찰한 결과 찹쌀 발아현미 cell이 멥쌀 발아현미보다 작았으며, 표면 구조도 찹쌀 발아현미가 더욱 조밀하였다.

• Journal of the Korean Society of Food Science and Nutrition
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• v.44 no.11
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• pp.1645-1652
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• 2015

We investigated the anti-wrinkle efficacy of hydrolysate from oyster protein by Protamex and Neutrase for the purpose of finding materials to assist skin health originating from marine organisms. There were about 7.9% free amino acids in the oyster hydrolysate, and contents of urea, taurine, alanine, and glycine were high. Oyster hydrolysate also showed collagenase inhibitory activity and was not toxic to CCD986sk human fibroblast cells. Yield of the fractions according to the molecular weight of oyster hydrolysate was 40% for less than 1,000 Da and 60.4% for less than 5,000 Da, respectively. Antioxidative effect, procollagen production, and matrix metalloproteinase-1 inhibitory activity were highest in 1,000~3,000 Da fractions. We observed that oyster hydrolysate and its less than 5,000 Da fraction are potential functional compounds for skin health and for improving wrinkles.

• Journal of the Korean Recycled Construction Resources Institute
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• v.3 no.4
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• pp.328-334
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• 2015

Building insulation materials use for the purpose of energy saving. Insulation materials can be classified inorganic and organic insulation materials. Inorganic insulation is used for fire resistive performance parts and organic insulation is used for thermal performance parts. Meanwhile, organic insulation is due to toxic gas emission in fire. Inorganic insulation is too heavy and low thermal performance than organic materials. This study is focused on evaluation of the physical properties of inorganic foam material using industrial by-products such as waste glass powder and fly ash. From the test result, inorganic foam materials for the applicability of fire-resistance and insulation light-weight materials.

• Fashion & Textile Research Journal
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• v.9 no.3
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• pp.295-302
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• 2007

Phase change material-related patents filed at Korea Institute of Patent Information(KIPI) and United States Patent and Trademark Office(USPTO) were analyzed for understanding the PCM's technological level of Korea and providing the information for establishing the research development policy concerned with high technology fibers. Patent data from 1980 to 2005 collected from KIPI and USPTO internet sites were examined using the number of patents and share of assignees in patents. The contents of patent were classified according to IPC(International Patent Classification) and assignees were divided into individual and firm/public body. The results of comparing total number of patents in USA with that in Korea showed USA had as 2.3 times as Korea had. The number of patents of USA had increased steadily since 1980 whereas that of Korea sharply since 2001. The number of patents of Korea from 2001 to 2005 was more than that of USA. USA was specialized in fundamental technology and Korea was specialized in application area with PCM. Assignees who had the most patents were firms and the next were individuals. Assignees who applied for several patents were more in USA than in Korea and patent application numbers per the assignees were higher for USA.

• Environmental and Resource Economics Review
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• v.4 no.2
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• pp.307-344
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• 1995

이 논문은 산업공해의 발생 요인을 규명하는 부분과 여기서 규명된 요인에 따라 배출량을 규제하고 그 규제효과를 추정하는 두 가지 부분으로 이루어져 있다. 이 논문에서는 환경(環境) 산업연관(産業聯關) 분석(分析) 모형(模型)을 이용하여 우리 나라의 산업(産業) 공해(公害) 배출(排出) 요인(要因)을 규명하고자 하였다. 이 분석의 결과 얻은 잠정적 결론은 첫째, 우리 나라는 지난 10년간 에너지 절약적(節約的)인 기술개발(技術開發)등 에너지의 효율성과 생산기술(生産技術)(투입구조(投入構造))의 개선 등 생산기술측면에서는 대기오염 배출량을 감소시키는 구조적 변화가 있었던 반면에, 수출입(輸出入) 구조(構造)등 수요 측면에서는 그 배출량을 증가시키는 구조적 변화가 발생하였다. 그러나 전체적으로 구조적 요인은 공해 배출량을 증가시키지 않은 반면 경제 성장에 따른 생산 규모의 확대로 총 배출량은 크게 증가하였다. 산업공해의 배출량을 감축시키기 위한 한 가지 정책수단(政策手段)으로 우리는 일정 율의 탄산까스 배출량(排出量)을 규제하기 위해 필요한 공해 제거 비용을 계산하고 배출 단위 제거비용을 Pigou적 공해조세(公害租稅)로 제시함으로서 일정 배출량 감축 효과를 가지는 공해세를 계산하고자 시도하였다. 이 같은 배출 규제(規制)에 의한 물가상승(物價上昇)의 파급정도(波及程度)는 각 산업의 공해제거(公害除去)를 위한 중간투입물(中間投入物) 수요(需要)와 규제대상(規制對象) 산업(産業)과의 산업연관(産業聯關) 정도(程度)에 따라 상이하다. 배출량(排出量)이 큰 6대(大) 공해산업(公害産業)에 대한 규제(規制)는 자기(自己) 가격상승율(價格上昇率)이외에 산업연관효과(産業聯關效果)의 차이 때문에 산업별로 다른 물가 파급효과를 발생시킨다는 것을 보였다. 특히 석유와 석탄 등의 에너지에 대한 탄산까스 배출 규제는 규제 산업의 자기 가격을 매우 높은 율로 상승시키며, 각각 화학, 고무, 섬유, 의복 제품과 1 차금속, 전력 가스, 조립금속, 시멘트 등에 높은 물가 파급효과를 나타내므로서 이산화탄소의 배출 규제 내지 탄소세의 부과가 몇 몇 산업의 가격 경쟁력에 집중적인 영향을 줄 것임을 시사하고 있다.

• Korean Journal of Community Nutrition
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• v.13 no.3
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• pp.426-438
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• 2008

The purpose of this study was to examine bowel habits, dietary habits, and nutrient intake of constipated adults, and the effects of prune products on relieving constipation symptoms. Fifty one adults with self-reported constipation (mean age 23 years, range 19-41 years, 10 males and 41 females) participated in this study. After a baseline survey on bowel habits and dietuy habits, participants were asked to consume at least 50 g of prune and 200 ml of prune juice per day during a 4-week period in addition to usual diet. Nutrient intake was estimated by a 24 hour recall at the baseline and once every week by diet records during the intervention. Data were analyzed after classifying the subjects into mild constipation group and severe constipation group by the severity of the symptoms. During the intervention, the subjects with mild constipation consumed 56 g of prunes (about 5.6 fruits) and 200 ml of prune juice, and the subjects with severe constipation consumed 59 g of prunes (about 5.9 fruits) and 207 ml of prune juice. Average intakes of energy, dietary fiber and water of the subjects in the mild constipation and severe constipation group increased during the intervention compared to the baseline. Average dietary fiber intake of the mild constipation and severe constipation groups significantly increased from 12.5 g and 11.6 g at the baseline to 18.5 g and 16.8 g after consuming prune products, respectively. These changes were accompanied by an increase in the number of bowel movements, a decrease of defecation time, a change to a softer stool consistency, and a decrease of abdominal pain during defecation. Seventy two subjects answered that prune products were effective to improve their overall constipation symptoms. Our data show that supplementation of prune products is effective to provide energy, dietary fiber and water, and to relieve constipation symptoms for constipated adults.

• Polymer(Korea)
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• v.37 no.6
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• pp.784-793
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• 2013

A two-step method for obtaining poly(N-isopropylacrylamide) (PNIPAAm) from poly(acrylonitrile) (PAN) was investigated in order to find a feasibility of imparting thermo-responsive property onto textile fiber materials. PAN was converted to poly(acrylic acid) (PAA) by hydrolysis at a first-step, and then PAA was converted to PNIPAAm at a second step via an amidation reaction of PAA with isopropylamine (IPA) in DMF medium using 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS) as catalysts. High content of carboxylic groups at the first step was obtained by the successive alkaline and acid hydrolysis of PAN. The degree of conversion of PAA to PNIPAAm at the second step was dependent on the amount of catalysts EDC and NHS. PNIPAAm converted from PAA through amidation reaction showed a lower critical solution temperature (LCST) behavior when the conversion was higher than about 53%.