• Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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• 2001.04a
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• pp.26-26
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• 2001

사무용 고지의 상당량을 차지하는 복사고지는 열과 압력으로 융착된 합성고분자 물질인 토너를 함유하고 있으며 이들 토너는 펄핑 후 크고 판상 형태의 잉크 입자를 형성하 여 기존의 부유부상법으로 제거가 곤란한 문제점을 지니고 있었다. 이러한 문제점을 극복하 는 방안으로 응집제를 이용하는 방법을 검토하였다. 복사기용 인쇄 잉크로 널리 사용되는 토너 업자는 낮은 표면에너지를 가지는 소수 성 물질이므로 같은 표면 특성을 가지는 소수성 물질과 서로 잘 결합한다. 따라서 소수성의 응집제를 이용하면 분리된 토너 잉크업자를 응집시킬 수 있으며, 응집된 토너 응집체는 스 크린 또는 클리닝 같은 정선 공정을 이용하여 제거가 가능할 것이다. 따라서 복사고지를 효 과적으로 재활용할 수 있는 탈묵방법으로 응집제를 이용하여 토너 입자를 조대한 웅집체로 형성시키고 이를 기존 탈묵방법인 스크린처리로 제거하는 방법을 검토하였다. 본 연구에서는 고급알코올의 하나언 1 -octadecanol을 이용하여 기존의 탈묵 방법 인 부유부상법으로는 제거가 곤란한 토너 잉크의 업자를 웅집시켜 구형의 조대한 응집체로 형성시켜 이를 제거하는 기술에 대하여 연구하였다. 펄핑 시의 온도를 70C의 고온으로 설 정한 경우 토너 입자가 유리전이온도에 이르게 되며 이들 토너 입자는 응집제에 의하여 웅 집되어 구형으로 성장하는 특정이 뚜렷하였으며, 토너 응집체의 크기는 최대 800 µm에 이 르기까지 조대하게 성장하였다. 또한 슬롯 폭 $250\mu\textrm{m}$의 진동 스크린 처리에 의한 토너 제 거 효율 측정 결과 역시 이들 토너 업자 웅집체의 형태가 구형임을 보여주었다. 해리 및 응 집 처 리 시 의 pH를 3으로 조정 하였을 때 토너 입 자가 웅집 제인 1 -octadecanol에 의 해 가장 효과적으로 구형의 조대한 웅집체를 이루는 것으로 나타났으며, 스크련을 통한 토너 웅집체 제거효율이 향상되었다. 복사고지 내에 포함되어 있는 전분 또는 사이즈제는 웅집 효과를 떨어뜨리는 주요 인으로 나타났다.

• Journal of the Korean Applied Science and Technology
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• v.37 no.3
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• pp.385-397
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• 2020

This study investigated whether swimming exercises improves obesity through regulation of angiogenesis in white adipose tissue. Female mice with high-fat diets were divided into sham-operated group (Sham), ovariectomized group (OVX), and swim-trained ovariectomized group (OVX + Swim). Compared to the Sham, OVX increased body weight, adipose tissue mass and size of adipocyte. However, these factors (: such as body weight, adipose tissue mass and size of adipocyte) of OVX + Swim decreased compared with OVX. Compared with the Sham, OVX increased the mRNA expression of angiogenic activator and MMPs and decreased the mRNA expression of angiogenic inhibitors in white adipose tissue. But OVX + Swim decreased the mRNA expression of angiogenic activator and MMPs and increased the mRNA expression of angiogenic inhibitors in white adipose tissue, compared with the OVX. Theses results suggested that swimming exercises the angiogenesis in white adipose tissue, resulting to improve obesity in high-fat diet-fed female OVX mice.

• Journal of the Korean Society of Food Science and Nutrition
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• v.32 no.8
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• pp.1370-1376
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• 2003

We investigated the effect of seatangle drink and seatangle extract on lipid oxidation, blood coagulation and intestinal movement in rats fed a hyperlipidemic diet. In the dietary hyperlipidemic induced group, the serum superoxide dismutase activity decreased and formation of hydroxy radical increased when compared to normal group, but these were controlled by seatangle drink treatment. The decreased of bleeding time and increased of tissue factor in the dietary hyperlipidemic rats were regulated by seatangle drink and seatangle extract, and especially the activity of tissue factor was remarkably decreased. Seatangle drink and seatangle extract were increased contraction on intestinal movement. Therefore, it can be concluded that seatangle drink or seatangle extract treatment depresses changing in absorption of gastrointestinal track in rats fed a hyperlipidemic diet.

• Journal of Life Science
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• v.27 no.12
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• pp.1486-1493
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• 2017

Doenjang is a traditional korean fermented soybean paste made from meju (fermented soybean), which are fermented by diverse microorganisms including Bacillus subtilis and molds such as Rizopus, Mucor, and Aspergillus species The purpose of this study was to investigate the antiobesity effect of the black soybean doenjang (Korean fermented soybean pastes) in C57BL/6 mice. The anti-obesity effect was determined by measuring the release of adiponectin, leptin and adipogenic transcription factors by using reverse transcription-polymerase chain reaction and western blot. Weight gain was significantly reduced in the mice fed high fat diets (HFD) plus black soybean doenjang (HBD) compared to HFD mice. The HBD were also effective in improving the lipid profile. They significantly decreased the levels of serum triglyceride and cholesterol. In addition, they had a significantly down regulated impact on antiobesity factors; leptin level and increased adiponectin level. Also, mRNA and protein expression of two adipogenic transcription factors, SREBP-1c and $PPAR-{\gamma}$, in high fat with black soybean fed mice were markedly down regulated. These results indicate that the black soybean doenjang potentiates an anti-obesity effect by modulating lipid metabolism, thereby inhibiting adipogenic transcriptional activation.

• Journal of Navigation and Port Research
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• v.38 no.5
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• pp.541-547
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• 2014

Busan was known firstly to the western world in the end of 18th century. When the Joseon opened a port under the western powers in the late 19th century, Busan was an important port. The increasing number of international ship exchange had magnified the harbor facility and the importance of lighthouses of Busan port. Busan maritime customs officer were in charge of installation and management of lighthouses. The operations of maritime customs became historical origin of Joseon changing from feudal society to modern nation. The majority of the documents from maritime customs was disappeared. So it was hard to know the exact history. But investigating documents and papers of Joseon, even media records will enable us to establish the objective fact relations. Moreover, published and translated data from the past make it possible such investigations. As a result, modern lighthouse of Busan harbor in the late Joseon after opening port was could be found. It could be offered to establishing the Korean modern history as the objective data.

• Korean Journal of Food Science and Technology
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• v.40 no.2
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• pp.215-219
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• 2008

Garlic that has been reacted with fermented soybean hypocotyl, termed Bio-Garlic, contains 6 times more allithiamine than garlic alone, and it was prepared as a complex food ingredient. To examine the effects of Bio-Garlic on obesity and hyperlipidemia, rats were fed a high-fat diet for 8 weeks. Bio-Garlic arrested increases in body weight without affecting feed intake in the rats. The Bio-Garlic also lowered serum levels of total cholesterol and triglycerides, while increased serum HDL-cholesterol levels. The atherogenic index of the Bio-Garlic treated group decreased, suggesting that Bio-Garlic has the potential to be marketed as a functional health food ingredient with beneficial effects on the circulatory system.

• Journal of the Korean Applied Science and Technology
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• v.36 no.1
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• pp.34-46
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• 2019

Obesity is frequently associated with metabolic disease. This study showed whether fenofibrate, a hypolipidemic agent, swimming and swimming combined with fenofibrate (: combination) regulate obesity, and whether combination is more effective than fenofibrate on regulation of obesity in high-fat diet-fed mice for 8 weeks. Both fenofibrate and swimming decreased obesity-associated factors such as body weight, adipose tissue mass, serum lipid levels and adipoctye size, compared with control mice. When mice were concomitantly treated with fenofibrate and swimming, combination reduced further the inhibitory effects on obesity-associated factors, compared with fenofibrate. Both fenofibrate, swimming and combination decreased serum glucose levels, compared with control mice. The evidence is presented herein that combination were effective to control obesity and serum glucose levels, suggesting that swimming combined with fenofibrate might contribute to inhibition of high-fat diet fed-induced metabolic syndrome.

• Journal of the Korean Society of Food Science and Nutrition
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• v.40 no.9
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• pp.1215-1226
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• 2011

The objective of this study was to investigate the anti-obesity and lipid-lowering effects of extracts of persimmon leaf (PWE), buckwheat leaf (BWE), and chinese matrimony vine leaf (LWE) in rats fed a high-fat diet (HFD). Male Sprague-Dawley rats (n=40) were divided into four groups: HFD (35% fat, w/w), HFD (38.5% fat, w/w) supplemented with PWE (10%, w/w), BWE (10%, w/w), and LWE (10%, w/w) groups. The epididymal, perirenal, and interscapular white adipose tissue (WAT) weights as well as plasma leptin level were lowest in the LWE group. Supplementation with PWE and BWE also tended to lower the perirenal and retroperitonal WAT weights compared to the HFD control group, and there was a significant decrease in plasma leptin concentration. Furthermore, plasma triglyceride concentration, hepatic cholesterol content, and hepatic lipid droplet accumulation were significantly lower in the PWE, BWE, and LWE groups than in the HFD group. BWE supplementation markedly lowered plasma total cholesterol concentration, although there were no significant differences in plasma HDL-cholesterol concentration and ratio of HDL-cholesterol/total cholesterol among the groups. Hepatic HMG-CoA reductase activity was significantly higher in the PWE and LWE groups than in the HFD group, and hepatic ACAT was not changed by extract supplementation. However, supplementation with PWE, BWE, and LWE significantly increased fecal acidic sterol content in rats fed a HFD. These results suggest that supplementation with PWE, BWE, and LWE may be an effective anti-obesity strategy by lowering body fat weight and improving plasma and hepatic lipid profiles in HFD-fed rats.

• Applied Microscopy
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• v.39 no.2
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• pp.191-197
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• 2009

This study investigated the effects to lowering hyperlipidemic levels in hamsters by feeding them naringin and onion extracts. The hyperlipidemic levels on all of the hamsters were raised by feeding them with high fat atherogenic diet (HFAD) containing 10% coconut oil and 0.05% cholesterol. The experimental groups were randomly assigned to 5 groups (normal, control, OEN, OES, and OESN) each 6 hamsters over a 40 days period. The control group (HFAD) received a 10% coconut oil and 0.05% cholesterol with basal diet, the OEN group which received an onion extract mixture contaning 50% water and 50% onion extract, the OES group which received 100% onion extract, the OESN group which received 100% onion extract combined with 1% naringin. Serum cholesterol and triglyceride levels significantly decreased in the naringin treated group while the HDL cholesterol level increased. On the other hand, the morphology of the mitochondria and nuclei found in the livers of the treated group given naringin were siginficantly different when compared to those group given high fat diets. In conclusion, onion extract with naringin decreased cholesterol levels in hamster's livers.

• Journal of the Korean Society of Food Science and Nutrition
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• v.38 no.8
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• pp.1024-1031
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• 2009

Crataegi fructus has been used as an oriental medicine and a folk remedy for the treatment of scurvy, constipation and stomach ailment. This study was aimed to investigate the effect of fermented Crataegi fructus vinegar (FCV) on the improvement of lipid metabolism in rats fed high fat diet (40% kcal% fat, fat source; beef tallow). Sprague-Dawley rats (n=32) were randomly divided into four groups [normal diet (ND), high fat diet (HD), and high fat diet supplemented with low (CFL; 1.5% wt/wt) and high (CFH; 3.0% wt/wt) doses of fermented Crataegi fructus vinegar] and were fed experimental diets for 6 weeks. At the end of the experiment, the body weight in high fat diet groups was higher than that of normal diet group, while the body weights of CFL and CFH group were significantly reduced by 7.2% and 10.0%, respectively, as compared with that of HD group. Moreover, liver and kidney weights in CFL and CFH group were significantly lower than that of HD group (p<0.05). The levels of serum triglyceride, total cholesterol, LDL-C, atherogenic index and hepatic triglyceride, total cholesterol in CFH group were significantly decreased as compared with HD group whereas it increased the serum level of HDL-C than HD group (p<0.05). CFL and CFH groups showed significantly decreased AST, ALT and ALP of serum as compared with HD group. Excretions of fecal saturated fatty acid in CFH group was significantly increased compared with ND and HD groups. These results imply that fermented Crataegi fructus vinegar can be used as possible food resources and functional food materials.