• Journal of the Korean Wood Science and Technology
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• 제51권1호
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• pp.23-37
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• 2023

One type of biomass that has promising potential for bio pellet production is spent coffee grounds (SCGs). However, previous studies have shown that SCGs in bio pellets cause a lot of smoke. Therefore, they need to be mixed with a material that has a higher calorific value to produce better quality pellets. One material that can be used is pine wood because it has a natural resin content that can increase the calorific value. The aim of this study was to examine the quality of bio pellets produced with SCGs and pine wood charcoal at different particle sizes. The charcoal was ground using either a hammer mill (HM) or a ball mill (BM). Pine wood charcoal was mixed with SCGs at ratios of SCGs to pine wood charcoal of 4:6 and 6:4 by weight, respectively, and the adhesive used a tapioca with a composition ratio 5% of the raw material. The bio pellets were produced using a manual pellet press. The quality of the bio pellets was assessed based on Indonesian National Standard (SNI) 8021-2014, and the physical observations include flame length, burning rate, and compressive strength. The average water content, ash content, and calorific value of the bio pellets were in accordance with SNI 8021-2014, but the density and ash content values were below the standard values. The BM variation of bio pellets had a higher compressive strength than the HM variation, and the 4:6 BM variation had the longest burning time compared with 4:6 HM.

• BMB Reports
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• 제50권11호
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• pp.566-571
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• 2017

Weight loss ${\geq}5$ percent is sufficient to significantly reduce health risks for obese people; therefore, development of novel weight loss compounds with reduced toxicity is urgently required. After screening of natural compounds with anti-adipogenesis properties in 3T3-L1 cells, we determined that kahweol, a coffee-specific diterpene, inhibited adipogenesis. Kahweol reduced lipid accumulation and expression levels of adipogenesis and lipid accumulation-related factors. Levels of phosphorylated AKT and phosphorylated JAK2, that induce lipid accumulation, decreased in kahweol-treated cells. Particularly, kahweol treatment significantly increased AMP-activated protein kinase (AMPK) activation. We revealed that depletion of AMPK alleviated reduction in lipid accumulation from kahweol treatment, suggesting that inhibition of lipid accumulation by kahweol is dependent on AMPK activation. We detected more rapid reduction in blood glucose levels in mice administrated kahweol than in control mice. We suggest that kahweol has anti-obesity effects and should be studied further for possible therapeutic applications.

• 복식
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• 제58권3호
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• pp.79-92
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• 2008

The purpose of this study is to develop knitwear design expressed not also Green but also LOHAS using natural yarns(wool and cotton) dyed with various natural sources(sappanwood, indigo plant, turmeric, cochineal, coffee, gallnut, and persimmon juice). This researcher tried to suggest solution scheme through the development of knitwear designs to break from the cottage industry and the limitation of design in Jeju and to preserve of traditional dye with persimmon juice simultaneously. Knitting is the formation of a fabric by the interlooping of one or more sets of yarns with hand knitting or industrial knitting. In hand-knitting, the two fundamental stitches are described as knit depending on the direction of the loop formation, front to back or back to front. In machine-knitting, the direction of loop formation is fixed, unless the stitch is mechanically transferred from front to back needle bed or vice versa. Industrial knitting technology can be divided into two main areas - weft knitting and warp knitting. Each has a different principle of construction. The majority of knitted fabrics for clothing are weft-knitted, and so this study is used weft-knitting and hand knitting technology. To achieve this purpose, researcher tried to present a lot of knitwear designs using yarns dyed with various natural sources focusing on Modern & Sophisticated Image and Elegance & Romantic Image to satisfy adult and missy consumer needs.

• 한국균학회지
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• 제18권1호
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• pp.20-25
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• 1990

Fructosyl transferase의 생산성이 높은 미생물을 얻기 위해 자연계에서 폭넓은 검색을 수행하였다. 300점 이상의 미생물을 분리하고 각각의 효소의 활성을 측정하였다. 그 결과 커피 자동판매기로부터 분리한 C23번 분리균은 다른 분리균들과 비교하여 높은 효소의 활성을 나타내어 fructosyl transferase 생산균으로 선발되었다. 다양한 배지에서 C23 분리균을 배양하여 형태, 그리고 배양특징 등을 연구하여 Aureobasidium pullulans var. melanigenum으로 동정하였다.

• Korean Journal of Health Education and Promotion
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• 제1권1호
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• pp.1-13
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• 1999

A study has been performed on perception of citizens about the medical insects (house flies, mosquitoes, cockroaches) in Chang Won city. A total of 375 subjects (male: 180, female: 195) was surveyed in October 1997. Cockroaches were the most dislike of medical insects to the dwellers. At a residence, cockroaches were the most troubled insects although mosquitoes were the most frequently appeared insects. Also, the most troubled insects were the cockroaches at hospitals, departments, coffee shops, and bars; the mosquitoes at theaters and parks; and the house flies at restaurants in the city. The cockroaches had the highest negative opinion score as a 4.4 point of a 5.0 point. About half of the subjects had extremely suffered from the mosquitoes (52.8%) and cockroaches (51.8%). House residents controlled house flies using fly swatters (50.0%) and insecticide sprayers (38.9%), but apartment residents controlled them using the sprayers (50.8%) and fly swatters (36.5%). The mosquitoes were controlled by using the sprayers (51.6%) and mosquito coils (36.4%). The cockroaches were controlled by using toxic baits (32.9%) and the sprayers (31.5%). Only 10% of the subjects were satisfied control management against the medical insects. The subjects wanted to more effectively control against cockroaches (39.9%) and mosquitoes (37.9%).

• 대한영양사협회학술지
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• 제24권1호
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• pp.75-91
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• 2018

The purpose of this study was to investigate changes in dietary life, lifestyle factors, and stress status of Chinese students who came to study abroad to South Korea. A total of 143 Chinese students were recruited from Seoul Women's University and Wonkwang University in 2013. We used SPSS 20 for statistical analyses in this study. The mean length of residence was 2.9 years for Chinese students. Most subjects aged 20~29 years immigrated to South Korea to obtain an academic degree (bachelor, master, or doctorate). We found a significant decrease in the frequency of eating fruits and vegetables among Chinese students in South Korea after migration. Further, there was a significant increase in fast food consumption and frequency of late-night snacking and eating out. In addition, their preferred beverage changed from soft drink or tea to coffee after migration. Stress level significantly (P<0.05) increased in male students compared to female students. The high stress group watched more TV when eating compared to the low stress group. In addition, there were more students who perceived their health status as bad in the high stress group. Overall results give us useful information for targeting the most vulnerable subjects and planning nutrition intervention programs.

• Journal of Nutrition and Health
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• 제37권7호
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• pp.550-556
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• 2004

Dietary pattern analysis is important complementary approach for identifying associations between diet and chronic disease. A case-control study was conducted in order to examine dietary patterns and the risk of colon cancer in Korea. Data were collected from both 137 cases with either colorectal cancer or large bowl adenomatous polyps and 134 controls regarding social-demographic characteristics and food intake using a semi-quantitative food frequency questionnaire. We conducted factor analysis and identified 6 major dietary patterns: 'Well-being diet' characterized by higher intakes of potatoes, yogurt, soybean paste and vegetables, 'Meat & fish', 'Milk & juice', 'Pork & alcohol', 'Rice & kimchi', and 'Coffee & cake'. We calculated factor scores for each participant and examined the associations between dietary patterns and colon cancer risk. After adjusting for potential confounders, there was a relative risk for colon cancer of 0.16 (95% confidence interval, 0.07 - 0.34) when comparing the highest with the lowest tertile of the 'Well-being' pattern. Significant trends of decreasing risk of colon cancer also emerged with the 'Milk & juice' (OR = 0.40, 95% CI = 0.20 - 0.79). In contrast, inverse associations of the risk were found for 'Pork & alcohol' (OR = 1.92, 95% CI = 0.93 - 3.97), 'Coffee & cake' (OR = 2.18, 95% CI = 1.07 - 4.46). For the 'Meat & fish' pattern, the decreased risk of colon cancer was observed in the second tertile, but not in the highest tertile when comparing to the lowest. The 'Rice & kimchi' pattern had a nonsignificant association with the risk. These data suggest that major dietary patterns derived from the FFQ associated with the risk of colon cancer in Korea. Since foods are not consumed in isolation, dietary pattern research in natural eating behavior may be useful for understanding dietary causes of colon cancer.

• The Journal of Advanced Prosthodontics
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• 제7권4호
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• pp.278-287
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• 2015

PURPOSE. The aim of this study was to compare the color stability, water sorption and cytotoxicity of thermoplastic acrylic resin for the non-metal clasp dentures to those of thermoplastic polyamide and conventional heat-polymerized denture base resins. MATERIALS AND METHODS. Three types of denture base resin, which are conventional heat-polymerized acrylic resin (Paladent 20), thermoplastic polyamide resin (Bio Tone), thermoplastic acrylic resin (Acrytone) were used as materials for this study. One hundred five specimens were fabricated. For the color stability test, specimens were immersed in the coffee and green tee for 1 and 8 weeks. Color change was measured by spectrometer. Water sorption was tested after 1 and 8 weeks immersion in the water. For the test of cytotoxicity, cell viability assay was measured and cell attachment was analyzed by FE-SEM. RESULTS. All types of denture base resin showed color changes after 1 and 8 weeks immersion. However, there was no significant difference between denture base resins. All specimens showed significant color changes in the coffee than green tee. In water sorption test, thermoplastic acrylic resin showed lower values than conventional heat-polymerized acrylic resin and thermoplastic polyamide resin. Three types of denture base showed low cytotoxicity in cell viability assay. Thermoplastic acrylic resin showed the similar cell attachment but more stable attachment than conventional heat-polymerized acrylic resin. CONCLUSION. Thermoplastic acrylic resin for the non-metal clasp denture showed acceptable color stability, water sorption and cytotoxicity. To verify the long stability in the mouth, additional in vitro studies are needed.

• Archives of Plastic Surgery
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• 제33권6호
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• pp.789-791
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• 2006

Purpose: The inverted nipple presents many problems in both cosmetic and functional aspects. The histopathologic features of inverted nipple are that inverted nipple has less fibromuscular tissue than normal nipple, short lactiferous duct and dense fibrous tissue. Many papers have been reported for correction of the inverted nipple, however not many medical literatures has specifically described about traction method. Although traditional traction methods were using half of urine cup or lid of bottle, they were uncomfortable and incapable for wearing brassiere. Methods: We invented a simple and more natural method using a dome-shape plastic disposable lid of take-out cup. We applied new device for three patients after corrective surgery. Results: For long term follow up, all patients satisfied their postoperative status and they were comportable with the lids. Conclusion: This new method is very simple, comfortable, and effective method for traction. It also allows patients to wear the brassiere.

• 한국가금학회지
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• 제39권3호
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• pp.223-232
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• 2012

본 연구는 커피박 첨가 사료가 육계의 사양 성적, 면역 장기 무게, 혈액성상 및 항산화 방어 작용에 미치는 영향에 대하여 조사하기 위하여 실시되었다. 실험 설계로서 3일령 육계 162수를 각 처리구당 54수씩(n=6, 케이지당 9수) 대조군(CON), 커피박 0.5%(CM0.5) 및 1.0%(CM.0) 3 처리군에 완전임의 배치하여 35일령까지 사양 시험을 실시하였다. 커피박 분말은 육계 후기 사양 기간(2~35일령) 동안에 첨가하여 급여하였다. In vitro radical 소거능 분석(DPPH 방법) 결과, 커피박 추출물은 매우 높은 radical 소거능(RSA)을 보였다. 사양 시험 결과, 커피박 0.5 및 1.0% 참가 급여는 체중, 증체량, 사료 섭취량 및 사료 요구율에 따른 부정적 영향이 없는 것으로 나타났다. 또한 간, 비장 및 F-낭 등 면역 관련 장기 무게 역시 커피박 첨가에 따른 영향을 받지 않았으나, 흉선의 무게는 커피박 첨가군에서 유의적으로(P<0.05) 증가되었다. 혈액 생화학 성상에서도 glucose, total protein, triglyceride, cholesterol 등은 차이가 없었으나, albumin은 커피박 첨가군에서 유의하게(P<0.05) 증가하였다. 소장점막세포 및 간조직에서 SOD, GPX 및 GST와 같은 항산화 효소의 활성도 및 GSH 함량은 커피박 첨가에 따른 영향을 받지 않는 것으로 나타났다. 그러나 간세포의 microsome 조직에서 지질과 산화도(MDA)는 커피박 첨가에 따라 감소되었으며, CM0.5 군에서 대조군에 비해 현저히(P<0.05) 감소되었다. 결론적으로 0.5~1.0% 수준의 커피박 첨가 급여는 육계의 사양 성적에 부정적인 영향을 미치지 않았으며, 오히려 간 조직의 지질과산화를 억제하여 체 조직에서 항산화력을 증가시키므로 육계 사료 내 천연 항산화 소재로서 이용이 가능할 것으로 사료된다.