• 한국식품영양학회지
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• 제28권1호
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• pp.34-39
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• 2015

본 연구는 식용 버섯의 조리방법에 따른 항산화 생리활성의 평가를 위해 수행되었으며, 산화적 스트레스에 의한 DNA 손상 감소 효과를 통해 조리방법을 달리한 버섯 추출물의 유전독성학적 방호효과를 살펴보았다. Human lymphocyte에 조리방법을 달리한 3가지 버섯(느타리, 팽이, 표고)의 추출물을 처리하고, hydrogen peroxide($H_2O_2$)로 산화적 손상을 준 후, DNA 감소 효과를 Comet assay로 평가한 결과, 모든 시료군에서 산화적 손상에 의한 DNA 손상 감소 효과를 나타냈다. 3가지 버섯 모두 비조리군이 조리군보다 높은 효과를 나타냈는데, 이는 조리과정에 의한 페놀성 화합물의 감소로 인한 것으로 보이며, 조리군 중에서 볶기와 전이 비교적 낮은 DNA 손상 감소 효과를 나타낸 것은 조리 시 첨가되었던 대두유의 가열 산화에 의한 것으로 사료된다. 결론적으로, 조리된 버섯은 생버섯에 비해 산화적 스트레스에 의한 DNA 손상 감소효과가 낮으나, 양성 대조군과 비교하였을 때 손상을 유의적으로 감소시킨 것으로 나타났다. 또한, 본 연구에서 사용한 네 가지 조리법(굽기, 데치기, 볶기, 전) 중 DNA 손상 감소에 효과적인 조리법은 대두유를 사용하지 않은 굽기와 데치기인 것으로 판단된다.

• Journal of Acupuncture Research
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• 제23권4호
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• pp.149-162
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• 2006

Objectives : The aim of this study is to evaluate the analgesic effect of electroacupuncture on Jogsamni (ST36) in the collagen-induced arthritis rats and investigate the role played by opioid receptor subtypes $({\mu},\;{\delta},\;{\kappa})$ in the antinociceptive effect of electroacupuncture (EA) In the thermal hyper algesia test. Methods : Immunization of male Sprague-Dawley rats with bovine type H collagen emulsified in incomplete Freund's adjuvant, followed by booster injection 2 weeks later induced collagen-induced arthritis (CIA). The thermal hyperalgesia was evaluated weekly with tail flick latency (TFL). In the fourth week after first immunization, EA stimulation (2 Hz, 0.07 mA, 0.3 ms) was delivered into Jogsamni (5736) for 20 minutes. Analgesic effect was evaluated by using the tail flick latency (TFL) after intraperitoneal injection of normal saline, naloxone, naltrindole and nor-binaltorphimine respectively to CIA rats. Results : The results were as follows; 1. The TFL were gradually decreased in CIA as time elapsed after e immunization of arthrogenic collagen and the maximum value was reached between the third to fifth week. 2. EA stimulation on 5736 inhibited chronic inflammatory pain induced by CIA. 3. The analgesic effect of EA was inhibited by pretreatment of ${\mu}-receptor$ antagonist (naloxone),${\delta}-receptor$ antagonist (naltrindole) and ${\kappa}-receptor$ antagonist (nor-binaltorphimine) respectively. Conclusion : Electroacupuncture has an analgesic effect on the CIA rat and has an antinociception mediated by 8, 5, H receptors.

• 한국항공우주학회지
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• 제31권6호
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• pp.45-51
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• 2003

본 논문에서는 소형 커나드 항공기인 Velocity-173의 가로안정성을 향상시키기 위한 방법에 대하여 연구하였다. Velocity-173의 세로안정성은 매우 우수한 반면, 가로안정성은 상대적으로 나쁘다. 가로안정성을 향상시키기 위해 수직미익의 면적을 증가시키는 작은 패널을 설계 및 제작하였다. 패널 설계 과정에서 AAA를 이용하여 패널 부착으로 인한 가로안정성의 변화를 예측하였다. 패널 부착 효과를 검증하기 위해 비행시험이 수행되었다. 또한, 비행시험 데이터로부터 안정/조종 미계수를 추출하기 위하여 최대공산추정법을 이용하였다. 본 연구를 통해 수직미익 아래에 부착된 패널의 효과를 확인할 수 있었다.

• 한국임상수의학회지
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• 제16권2호
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• pp.417-421
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• 1999

To establish the electroacupuncture anesthesia for experimental animal, 5 adult rabbits (Newzealand-white species) and 6 rats (Spraque-dawley) were examined. The acupoints used for electroacupuncture anesthesia were Tian-ping and Bai-hui. After perpendicular insertion of needle to the acupoints, positive electrode was connected at Tian-ping and negative electrode was connected at Bai-hui using veterinary electroacupuncture anesthesia apparatus, respectively. Electric conditions were 2~3 V and 30 Hz in rabbits, and 1.5~2 V and 30 Hz in rats, respectively. To examine the effect of electroacupuncture anesthesia, laparotomy (2 heads), castration (2 heads) and ovariohysterectomy (1 head) were applied in rabbits, and laparotomy (5 heads) and castration (1 head) were peformed in rats, respectively. The induction time of electroacupuncture anesthesia was very rapid and approximately 1 minute, and pain of body surface including the extremities was not detected in rabbits and rats. As for the reactions with electroacupuncture anesthesia, consciousness was vivid, blepharoreaction was not observed and the tail was up at early stage but was down afterwards in rabbits. The same findings except cotinuous lifting of the tail were observed in rats. The pain was not observed during incision and suture, bleeding was comparatively small volume and the class of anesthesia effect was excellent.

• 대한한방소아과학회지
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• 제19권1호
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• pp.67-82
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• 2005

Objectives : This study was conducted to find out the effect of Yukmijiwhangtanggamibang (YM) on growth, learning and memory of rats. Methods : It was divided SD rats into Sham group, 192 Saporin injection(SA+Saline) group and Injection of 192 Saporin with YM(SA+YM) group. Growth measure length of bone and tail. Memory performance was used aquisition test and learning retention of morris water maze. It was detected acetylcholinesterase(AChE), cholineacetyltransferase(ChAT) at medial septum and hippocampus by immunohistochemistry Results : Body Weight of the SA+YM Group increased effectively, as compared with SA Saline group. Growth of bone in the SA+YM Group increased effectively, as compared with SA+Saline group. Growth of Tail in the SA+YM Group increased effectively, as compared with SA_Saline group. The SA+YM Group in Aquisition Test improved effectively, as compared with SA+Saline group. The SA+YM Group in Learning Test improved effectively, as compared with SA+Saline group. The numbers of ChAT cells in Medial septum increased effectively, as compared with SA+Saline group. The numbers of ChAT cells in CA1 of Hippocampus increased, but was not effective. Conclusion : These results suggest that YM has an improving effect on the impaired learning through the effects on memory registration and retrieval.

• Radiation Oncology Journal
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• 제2권1호
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• pp.1-9
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• 1984

To evaluate the influence of prior heat treatment on the thermal enhancement of irradiation effect after hyperthermia, an experimental study was carried out using a total of 80 mice. Hyperthermia was carried out at $43^{\circ}C$ for 40 minutes and was repeated with various intervals. A single dose of 3,000 rad was delivered on skin of mouse tail immediately after the second hyperthermia. The skin changes of the irradiated mouse tail were observed from 7th to 35th post-irradiation days, and the skin scores were analyzed. The results are as follows, 1. The radiation damage on mouse skin increased significantly when radiation was combined with hyperthermia. 2. The radiation damage after repeated hyperthermia is significantly less than that after single hyperthermia, when the interval is 1 to 6 days. 3. As a result, thermal tolerance persists from 1 through 6 days after the initial hyperthermia.

• Asian-Australasian Journal of Animal Sciences
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• 제14권4호
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• pp.553-558
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• 2001

The effect of poor feather cover on feed intake and production was examined in two commercial strains of layers (tinted and brown egg) over 91-98 weeks of age. Hens were housed at four per cage ($600cm^2/bird$) in a commercial layer shed which ranged in temperature from 13.2 to $16.8^{\circ}C$. At the start of the experiment 50% of the birds were classified as having poor feather cover. Feather score was highly correlated with feed intake. Poor feather cover on the neck and the back were the best indicators of hens with high feed intake. Feed intake of hens with poor feather cover was 16% higher (p<0.05) than hens with good feather cover. Hens with good feather cover produced more eggs (p<0.05) early in the trial and had a higher (p<0.05) liveweight, but there was no significant differences in egg weight. Feed per dozen eggs was superior (p<0.05) in hens with good feather cover. Feather cover on the back and vent were the best indicators of overall feather score, while the tail, base of tail and vent were the body parts most affected in birds with poor feather cover.

• East Asian Economic Review
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• 제24권3호
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• pp.253-273
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• 2020

This paper investigates the impact of the effective minimum wage, defined as the log difference between the minimum and the median wages, on wage inequalities in the OECD countries. Unlike the previous studies that focus on single countries in which the minimum wage has no cross-sectional variation and rely instead on within-country variations of wage distribution across regions or socio-economic characteristics, we use a country panel that allows for both cross-sectional and time-series variations in minimum wage. We also control for more factors than in the previous studies whose absence may cause endogeneity. Our results confirm the previous findings that increases in minimum wage alleviate the wage inequality at the lower tail of the wage distribution, while having little effect at the upper tail. The estimated effect is larger for women than for men, which is consistent with the fact that the share of workers who are directly affected by the changes in minimum wage is bigger among women than men. An application of the IVs of Autor, Manning and Smith (2016) supports the robustness of our findings.

• Tuberculosis and Respiratory Diseases
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• 제43권4호
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• pp.571-578
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• 1996

배 경 : 폐 농양은 괴사된 폐실질에 농이 고이는 질환으로 1940년대 이전까지는 폐 농양은 체외 배액술에 의한 방법이 치료 원칙이었으나 피 이후 파양한 항생제의 발달로 대부분의 폐 농양에서는 항생제와 체위적 배농술을 포함한 내과적 치료법이 매우 효과적으로 이용되어 왔고 내과적 치료에 실패한 경우에 한해서 폐엽 절제를 포함한 외과적 치료 방법이 적용되어 왔다. 농흉은 흉막강내에 농이 고이는 질환으로 흉수 그람 염색상 양성이어야 하고 약제의 효과적인 침투가 어려우므로 내과적인 치료만으로 치유를 기대할 수 없고 흉관삽관 등 수술적인 조작이 필요하다. 하지만 최근 환자의 전신상태가 불량하거나 외과적 폐절제술이 용이하지 않는 경우에 국소 마취로 직경이 작은 카테타를 사용하여 경피적으로 배농시켜 치료하는 방법을 시행하고 있다. 이에 본 연구에서는 한양대학병원에 내원한 폐 농양 10례와 농흉 23례의 환자를 대상으로 pig-tail 도관 배액술을 시행하였기에 이에 대한 치료 효과를 보고하는 바이다. 대상 및 방법 : 1990년 1월 1일부터 1996년 5월 20일까지 한양대학병원에서 입원 치료한 환자중에서 pig-tail 도관을 이용하여 치료한 폐 농양 환자 10례와 농흉 환자 23례를 대상으로 하였고 각 환자들은 도관 배액술 전에 단순 흉부 X-선사진과 흉부 전산화 단층촬영을 하였고 형광 투시 또는 초음파 유도하에서 천자를 시행하였다. 천자후 카테타는 배액이 잘 되는 위치에서 피부에 고정되어었고 매일 배액량을 관찰한 후 3-4일 간격으로 단순 흉부 X-선사진을 검사하여 폐 농양의 크기나 농흉의 크기가 줄고 임상적 호전이 있으면서 배농량이 하루 5ml이하일때 도관을 제거하였다. 결 과 : 원인균은 폐 농양에서는 Staphylococcus aureus aureus 1례, Klebsiella pneumoniae 1례였으며 농흉에서는 결핵균이 14례로 가장 많았고 2례에서는 Streptococcus pneumoniae 였고 나머지에서는 균의 성장을 관찰할 수 없었다. 카테타의 삽입기간은 폐농양에서는 1-2주 사이가 7례(70%)였으며 농흉에서도 1-2주 사이가 14례(60.8%)로 가장 많았다. 경피적 배농은 29례(87.8%)에서 성공적이었으며 그 중 20례(60.6%)에서는 그 크기가 빠르게 감소되었다. 결 론 : 폐 농양과 농흉에서 pig-tail도관을 통한 배농은 항생제 요법과 보조 요법에 반응하지 않는 경우와 외과적인 수술의 어려움이 있는 환자들에서 비교적 안전하게 선택할 수 있는 효과적인 치료 방법으로 생각된다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2007년도 추계학술대회 논문집
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• pp.107-108
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• 2007