푸른길 공원의 대기 환경 특성에 관한 연구

민경우,이경석,박옥현,윤관주,김도술,박세일,정원삼,이대행,조영관,Min, Kyoung-Woo,Lee, Kyoung-Soek,Park, Ok-Hyun,Yoon, Kwan-Ju,Kim, Do-Sool,Park, Se-Il,Jeung, Won-Sam,Lee, Dae-Hang,Cho, Young-Gwan 한국환경보건학회 2015 한국환경보건학회지 Vol.41 No.3

Objectives: This study aimed to survey the characteristics of air quality and meteorological conditions in a greenway park. Methods: We measured meteorological and health related factors, including noise, particulate matter ($PM_{10}$) and selected gaseous air pollutants at three locations in a greenway park and on a general roadside as comparison. The measurements were repeated four times from April to October 2014. Results: The average air temperature in the greenway park was $20.7^{\circ}C$ which was $1-2^{\circ}C$ lower than on the general roadside. The average $PM_{10}$ concentration in the greenway park was $85.0{\mu}g/m^3$, a level 2-3 times lower than that at the roadside. The noise level at the greenway site was 4.4 dB(A)- 23.0 dB(A) lower than at the roadside. The average CO, $CO_2$, $SO_2$ and NOx concentrations in the greenway park were lower than at the roadside. The average phytoncide and anions concentrations in the greenway park were higher than at the roadside. Conclusions: The urban forest of the greenway park may have some impact on air quality and meteorological conditions.

Protective Effects of N-acetylcystenine and Selenium against Doxorubicin Toxicity in Rats

Yeo-sung Yoon,Sun-don Kim,Min-hye Lee,Heung-shik S.Lee,In-se Lee,Je-kyung Sung,Eun-sung Park 대한수의학회 2003 Journal of Veterinary Science Vol.4 No.2

Effects of N-acetylcysteine and Selenium against Doxorubicin Toxicity in RatsEun-sung Park, Sun-don Kim1, Min-hye Lee, Heung-shik S. Lee, In-se Lee, Je-kyung Sung and Yeo-sung Yoon*

Effects of dietary supplementation of Pediococcus pentosaceus strains from kimchi in weaned piglet challenged with Escherichia coli and Salmonella enterica

송동철,Ji Hwan Lee,Kangheung Kim,오한진,Jae Woo An,Se Yeon Chang,조현아,Sehyun Park,Kyeongho Jeon,Yohan Yoon,유윤정,Younghyun Cho,조진호 한국축산학회 2023 한국축산학회지 Vol.65 No.3

Escherichia coli (E. coli) and Salmonella enterica (SE) infections in pigs are major source associated with enteric disease such as post weaning diarrhea. The aim of this study was to investigate the effects of Pediococcus pentosaceus in weaned piglets challenged with pathogen bacteria. In Experiment.1 90 weaned piglets with initial body weights of 8.53 ± 0.34 kg were assigned to 15 treatments for 2 weeks. The experiments were conducted two trials in a 2 × 5 factorial arrangement of treatments consisting of two levels of challenge (challenge and non-challenge) with E. coli and SE, respectively and five levels of probiotics (Control, Lactobacillus plantarum [LA], Pediococcus pentosaceus SMFM2016-WK1 [38W], Pediococcus acidilactici K [PK], Lactobacillus reuteri PF30 [PF30]). In Experiment.2 a total of 30 weaned pigs (initial body weight of 9.84 ± 0.85 kg) were used in 4 weeks experiment. Pigs were allocated to 5 groups in a randomized complete way with 2 pens per group and 3 pigs per pen. Supplementation of LA and 38W improved (p < 0.05) growth performance, intestinal pathogen bacteria count, fecal noxious odor and diarrhea incidence. In conclusion, supplementation of 38W strains isolated from white kimchi can act as probiotics by inhibiting E. coli and SE.

複合 韓藥劑 淸籬滋坎湯의 抗癌效果 및 作用機轉 糾明

Cho, Kyung-Sam,Kim, Si-Young,Park, Jai-Kyung,Choi, Seung-Hoon,Chung, Se-Young,Yoon, Hwi-Joong 경희대학교 동서의학연구소 1999 INTERNATIONAL SYMPOSIUM ON EAST-WEST MEDICINE Vol.1999 No.1

Kyung Sam Cho¹Si Young Kim¹, Jai Kyung Park²,Seung Hoon Choi³,Se Young Chung⁴, Hwi Joong Yoon¹¹College of Medicine, ²East-West Medical Research Institute, ³College of Oriental Medicine, ⁴College of Pharmacology, Kyung Hee University,Seoul, Korea. The Anti-cancer Effect of Oriental Medicine Chung-Ri-Ja-Gam-Tang in the Mouse with Metastatic Lung Cancer. Proceedings of International Symposium on East-West Medicine, Seoul. 231-243, 1999.-The oriental medicine Chung-Ri-Ja-Gam-Tang is an herbal medicine which has been used for pulmonary diseases and known as having immune stimulatory effects. It has been known effective in lung cancer. So we studied the effects and the mechanisms of this herbal medicine it the mouse with metastatic lung cancer. The metastatic lung cancer of the mouse was produced with melnoma cell line(B16BL/6).5×10□/mouse tumor cells were injected intravenously to the CDF1 mouse via tail vein. The mice were divided 4 groups. The first group was treated with 50mg/kg extract of Chung-Ri-Ja-Gam-Tang per oral for 10 days after cancer cell injection, second group treated with saline after cancer cell injection, the third group with medicine without cancer cell, and the last group with saline only. After 10 days treatments some of the mice were scarificed and the lung and spleen was removed. The survival duration, weight change, the number of metastatic cancer nodule of the lung, the NK cell activity, the capacity of cytokines(INF-γ,INF-α,IL-2) production and the proliferation activities of mouse lymphocytes were measured. The surival times of the group 1 mice were longer and the weight loss was less than the group 2 significantly. The number of the metastatic nodule of the lung were decresed in the group 1 than the group 2. The production of INF-γ,was increase in group 2 than group 3 and 4, IL-2 production was increased in group 1 than group 2,3,4 significantly. There was no difference in TNF- α production and proliferation activity of lymphocyte in each group. The NK cell activity was significantly increased in group 1 than group 2,3,4. We conclude that the Chung-Ri-Ja-Gam-Tang has the effect of increasing the NK cell activity of the CDF1 mouse with metastatic lung cancer(B16BL/6). And it is suggested that the increased production of the IL-2 is the mechanisms of enhanced NK cell activity.

성균관대학교 물리학과 방음실의 설계 및 제작

朴興秀,尹錫旺,李聖壽,朴光俊,吳世珍 성균관대학교 기초과학연구소 1986 論文集 Vol.37 No.1

An anechoic chamber was constructed to make to condition of acoustic free field at the Department of Physics, Sung Kyun Kwan University. In this paper the criteria for the design and construction of the anechoic chamber are described. 48cm long wedges of density 15.3kg/㎥ glasswool attached to the 40×20×20㎤ base were used for the lining of anechoic chamber with the cutoff frequency of 125Hz. The interior space of the chamber is 3.56m long, 3.38m wide and 2.37m high.

브레이징 온도 변화에 따른 ZrO2와 Ti-6Al-4V의 접합 특성

기세호,박상윤,허영구,정재필,김원중 大韓齒科補綴學會 2012 대한치과보철학회지 Vol.50 No.3

Purpose: In this study, brazing characteristics of ZrO2 and Ti-6Al-4V brazed joints with increasing temperature were investigated. Materials and methods: The sample size of the ZrO2 was 3 mm × 3 mm × 3 mm (thickness), and Ti-6Al-4V was 10 mm (diameter) × 5 mm (thickness). The filler metal consisted of Ag-Cu-Sn-Ti was prepared in powder form. The brazing sample was heated in a vacuum furnace under 5 × 10-6 torr atmosphere, while the brazing temperature was changed from 700 to 800℃ for 30 min. Results: The experimental results shows that brazed joint of ZrO2 and Ti-6Al-4V occurred at 700 - 800℃. Brazed joint consisted of Ag-rich matrix and Cu-rich phase. A Cu-Ti intermetallic compounds and a Ti-Sn-Cu-Ag alloy were produced along the Ti-6Al-4V bonded interface. Thickness of the reacted layer along the Ti-6Al-4V bonded interface was increased with brazing temperature. Defect ratios of ZrO2 and Ti-6Al-4V bonded interfaces decreased with brazing temperature. Conclusion: Thickness and defect ratio of brazed joints were decreased with increasing temperature. Zirconia was not wetting with filler metal, because the reaction between ZrO2 and Ti did not occur enough. 연구 목적: 온도 변화에 따른 ZrO2와 Ti-6Al-4V의 접합 특성에 대해 알아보기 위하여 새로운 브레이징 합금을 제조하고, 브레이징 온도가 접합 특성에 미치는 영향에 대하여 조사하고자 하였다. 연구 재료 및 방법: 본 연구에서 사용된 시편으로는 실험용 ZrO2 모재(ZirBlank-PS, Acucera, Inc., Gyeonggi-do, Korea)는 소결 전의 블록형태(65 mm × 36 mm × 12 mm (t))이며, 이를 잘라 사포(#2400)로 표면연마 후 소결하였다. 소결된 ZrO2 시편의 크기는 3 mm × 3 mm × 3 mm (t) 이다. Ti-6Al-4V 모재(Ti 6Al 4V ELI CG Bar, TMS, Washington, USA)는 직경 10 mm × 5 mm (t)를 사용하였다. 소결된 ZrO2와 Ti-6Al-4V의 접합을 위하여 브레이징 합금을 제조하였다. 시편을 3군으로 나누어A군은 700℃에서, B군은 750℃에서, C군은 800℃에서 각각 브레이징 하였다. 브레이징 부의 두께와 결함율의 측정은 각 군당 하나의 시편으로 각 시편 당 5회씩 반복 측정하여 평균값을 취하였다. 결과: 브레이징 합금을 사용하여 진공 브레이징을 수행한 결과 ZrO2 와 Ti-6Al-4V 는 700℃ - 800℃에서 양호한 접합을 보였다. 브레이징 후 브레이징 온도 변화에 따른 브레이징 부의 두께 및 결함율의 변화는SEM을 사용하여 측정하였다. 브레이징 온도가 700℃에서 800℃로 증가함에 따라 CuTi 금속간 화합물 층 및 Ti-Sn-Cu-Ag계 화합물 층의 두께는 각각 4.5 ㎛에서 10.3 ㎛로, 3.1 ㎛에서 5.0 ㎛로 증가되었다. 또한 브레이징 온도가 700℃에서 800℃로 증가함에 따라 브레이징 접합계면의 결함율은 ZrO2 및 Ti-6Al-4V 계면에서 각각25%에서 16.3%, 5%에서 1.5%로 감소되었다. 결론: 브레이징 온도가 700℃에서 800℃로 증가됨에 따라, 브레이징 접합계면의 결함율은 ZrO2 및 Ti-6Al-4V 계면에서 모두 감소되었다. 이는 결함부에서 ZrO2와 활성원소인 Ti과의 반응이 충분히 일어나지 않아서 브레이징 합금이 ZrO2에 웨팅되지 않은 것이 원인이라고 사료된다.

회계이익정보의 유용성에 관한 연구 : 장외등록법인에 있어 재무정보의 유용성

朴範鎬,尹勢憲 홍익대학교 경영연구소 2001 경영연구 Vol.26 No.-

출아효모에서 TAR 클론닝법을 이용한 고등동물의 게놈으로부터 특정 염색체 부위의 분리

박정은,윤영호,이윤주,김광섭,윤세련,안태진,임선희,선우양일 동아대학교 기초과학연구소 2003 基礎科學硏究論文集 Vol.20 No.1

복잡한 게놈 분석에 용이하도록 효모의 인공 염색체(YAC) 클론닝 시스템은 발달되어왔다. YAC은 박테리아의 인공 염색체(BAC)보다 더 큰 단편을 클론닝할 수 있고, 또한 클론된 단편을 쉽게 변형시킬 수 있다. 형질전환과 연계된 재조합법(Transformation-Associated Recombination; TAR)은 게놈 라이브러리를 만들지 않고 직접 게놈 DNA로부터 분리하고자 하는 유전자나 특정 염색체 부분을 클론닝 할 수 있는 방법이다. 이 방법은 spheroplast transformation을 수행하는 동안, 목적으로 하는 유전자의 5' 그리고 3' 염기 배열(hooks)을 지닌 TAR 벡터와 게놈 DNA 사이에서 일어나는 상동성 재조합에 의해 이루어진다. 효모 내의 in vivo 재조합을 이용한 TAR 클론닝법은 복잡한 게놈으로부터 목적의 염색체 부분을 원형 YAC의 형태로서 선택적으로 분리할 수 있다. 그러므로 TAR 클론닝 법은 특정 염색체로부터 YACs을 만드는데 매우 유용하여, 전체 게놈으로부터 특이적 유전자나 유전자의 family를 분리하는데 효과적인 방법으로 사료된다. Yeast artificial chromosome (YAC) cloning systems have advanced the analysis of complex genomes considerably. They permit the cloning of larger fragments than do bacterial artificial chromosome systems, and the cloned material is more easily modified. Transformation-associated recombination (TAR) is a cloning technique that allows specific chromosomal regions or genes to be isolated directly from genomic DNA without prior construction of a genomic library. This technique involves homologous recombination during spheroplast transformation between genomic DNA and a TAR vector that has 5' and 3' gene targeting sequences (hooks). Using in vivo recombination in yeast, TAR cloning selectively isolates, as circular YACs, desired chromosome segments or entire genes from complex genomes. We propose that TAR cloning can provide an efficient means for generating YACs from specific chromosomes and that TAR cloning may be useful for isolating families of genes and specific genes from total genome DNA.

운동시의 습관적인 이 악물기가 치경부 수복물에 가해지는 스트레스를 분산하기 위한 마우스가드의 사용

윤성영,송창규,박세희,김진우,조경모 大韓齒科保存學會 2010 Restorative Dentistry & Endodontics Vol.35 No.1

마우스가드는 19세기 복싱선수들의 구강내 열상과 연조직의 외상을 막기 위해 사용되었다. 최근에는 치과영역에서 다양하게 사용되고 있으며, 운동 보호 장치, 미백용 장치물, 교정용 유지 장치, 수술용 가이드 장치, 턱관절 안정 장치물 등에 쓰이고 있다. 습관적인 이 악물기에 의한 반복적인 5급 수복물의 탈락은 우선 이 악물기에 의한 스트레스를 조절한 후 수복이 이루어져야 한다. 마우스가드는 이 악물기에 의한 스트레스를 조절하는 장치물로 사용할 수 있다. 본 증례에서는 마우스가드로 치아에 가해지는 스트레스는 감소시키는 것에 대해 논의 할 것이다. 마우스가드를 사용함으로써 반복적인 탈락을 나타내는 5급 수복물의 유지에 단기적으로 만족스러운 결과를 얻을 수 있었다. 만약 환자 및 치과의사가 이 악물기로 반복적인 탈락을 나타내는 수복물로 고생하고 있다면, 마우스가드의 보조적인 사용이 치경부 수복물의 유지에 도움을 줄 수 있을 것이다. Mouthguards were used to protect boxers from lip lacerations and other soft tissue injuries in the late 19th century. Now they are used various parts of dental treatment, which are sports protective aid, bleaching tray, orthodontic retainer, implant insertion guide tray, splint and so on. Repeated dislodgement of Class V restoration due to habitual clenching stress should be restored with stress control. Mouthguard can be used as stress relief device. This case describes methods that can relieve occlusal force to teeth by using mouthguard. Satisfactory results can be obtained by using mouthguard for retention of repeated dislodgement Class V restorations. If patients suffered from repeated restorations of Class V due to clenching, mouthguard can be used additional device to relieve the occlusal stress in conservative dentistry.

휴대용 계산기에 의한 착물의 안정도상수의 계산

윤세중,오제직,박병빈,박성록 공주대학교 사범대학 과학교육연구소 1980 과학교육연구 Vol.12 No.1

A Pocket calcultor program(Texas Instruments TI58 or TI59) was constructed for evaluation of the Successive stability constants of Nikel-glycine complex. This program conld be used for many other systems having similar eguhibrium scheme and experimental method. TI59, this program could be extended to the calculation of ionic strength correction and high n Complexes.