수용액상 니트로스아민의 UV 광분해에서 pH 영향

심재구 ( Jae-goo Shim ),아프잘아킬 ( Afzal Aqeel ),최보미 ( Bo-mi Choi ),이정현 ( Jung-hyun Lee ),곽노상 ( No-sang Kwak ),임호진 ( Ho-jin Lim ) 한국물환경학회(구 한국수질보전학회) 2016 한국물환경학회지 Vol.32 No.4

N-nitrosamines are a class of carcinogenic chemicals that can pose significant hazards to the human life. Ultraviolet (UV) light irradiation is considered as one of the effective methods to reduce N-nitrosamines in the aqueous phase. This study aimed to investigate the pH influence on UV photodegradation of N-nitrosamines (i.e., N-nitrosodibutylamine (NDBA) and N-nitrosopyrrolidine (NPYR)) closely related to water treatment. Photodegradation rate constants of NDBA and NPYR remained between 3.26×10-2 L/W-min to 5.08×10-3 L/W-min and 1.14×10-2 L/W-min to 2.80×10-3 L/W-min at pH2-10, respectively. This study also focused on the formation of oxidized products (i.e., primarily NO2- and NO3-). Under slightly acidic and eutral conditions, NO2- formation was more prevalent than NO3- formation, while under strong acidic conditions, NO3- was more prevalent. There was no significant change in total organic carbon (TOC) and total nitrogen (TN), suggesting negligible loss of N-nitrosamines and degradation products from the system. NDBA was easily photodegraded than NPYR. This study also demonstrated that a lower pH is a favorable condition for photolytic degradation of N-nitrosamines in water.

코레일 1호선 일반형 전동차 주행저항식에 대한 고찰

배노광(No-Kwang Bae),조현직(Hyun-Jik Cho) 한국철도학회 2016 한국철도학회 학술발표대회논문집 Vol.2016 No.10

본 논문에서는 코레일 1호선 일반형 전동차에 대한 주행저항식을 산출하기위한 시험 방법을 소개하고 측정결과에 따라 주행저항값을 계산한다. 또한 계산된 주행저항값을 바탕으로 코레일 1호선 일반형 전동차에 대한 지상 구간 주행저항식을 산출해낸다. This study introduces the procedure for measurement of running resistance and calculate the running resistance value based on measurement results. Finally this study computes the running resistance formula for KORAIL Line No.1 EMU using the calculated running resistance value.

Hatta No.(MH)와 Enhancement Factor(E)가 고려된 수용 BPA의 오존 산화 모델 적용성 연구

박노석(No Suk Park),김성은(Sung Eun Kim),김정현(Jeong Hyun Kim),배철호(Chul Ho Bea),민진희(Jin Hui Min),안효원(Hyo Won Ahn) 大韓環境工學會 2004 대한환경공학회지 Vol.26 No.12

전홍준 소설의 현실인식 연구

장노현 한국언어문화학회 ( 구 한양어문학회 ) 2002 한국언어문화 Vol.22 No.-

Jang No Hyun. 2002. An Unerstanding of the Real Reflected Jeon Hong Jun' Novel. Jeon Hong-jun was an unnoticed novelist during the Liberation Period. He depicted the real of the Liberation period with a critical eye in the <Dawn(새벽)> and <Wriggling(준동)> which are filled with an abominable intellectual. In the <The History of Big Gate House(큰 대문 집의 역사>, the writer described the real of those days and Korean modern history using allegory. He showed that the gloomy real was caused by the power of foreign country and Korean followers. The characters of this novel are all well delineated satirically. By using allegory and satire in combination, the writer reflected the real of the Liberation Period adequately and substantially. <Itinerary(노정)> differs from the other works. It was based on Lofty Realism that is Bukjoseon Munyechong's creative methodology. The writer found the most suitable creative methodology to solve the historical issues the society of the time faced. His understanding of the real changed more affirmative side.

하수처리 : Hatta No.(MH)와 Enhancement Factor(E)가 고려된 수용 BPA의 오존 산화 모델 개발

박노석 ( No Suk Park ),김성은 ( Sung Eun Kim ),김정현 ( Jeong Hyun Kim ),배철호 ( Chul Ho Bae ),( Tsuno Hiroshi ) 대한상하수도학회 2004 공동추계 학술발표회 논문집 Vol.2004 No.-

중생 고품질 내병 다수성 벼 ‘영보(嶺寶)’

박노봉(No-Bong Park),김상열(Sang-Yeol Kim),여운상(Un-Sang Yeo),김정일(Jeong-Il Kim),이지윤(Ji-Yoon Lee),권오덕(Oh-Deog Kwon),박동수(Dong-Soo Park),이종희(Jong-Hee Lee),조준현(Jun-Hyun Cho),송유천(You-Cheon Song),오성환(Seong-Hwan Oh) 한국육종학회 2019 한국육종학회지 Vol.51 No.4

‘Yeongbo’ is a variety of japonica rice (Oryza sativa L.) with good eating quality, resistance to rice stripe virus, rice dwarf virus, and bacterial blight disease. It was developed by the rice breeding team of the Yeongdeok Branch, National Institute Crop Science, Rural Development Administration in 2014. This variety was derived from a cross between ‘Yeongdeog35’ with good eating quality and ‘Saekyehwa’ with good plant type in the 2002 summer season. A promising line selected through the pedigree breeding method, YR24269-1-2-1-2-3-3, was designated as ‘Yeongdeog57’ in 2011. After a local adaptability test at nine locations from 2012 to 2014, ‘Yeongdeog57’ was released under the name of ‘Yeongbo’ in 2014. ‘Yeongbo’ had a short culm length of 66 cm and medium growth duration. This variety was resistant to K1, K2, and K3 races of bacterial blight, rice stripe virus, and dwarf virus, and moderately resistant to leaf blast disease. ‘Yeongbo’ had translucent and clear milled rice kernel without white core and belly, and good eating quality according to a panel test. The yield potential of ‘Yeongbo’ in milled rice was approximately 5.75 MT/ha at an ordinary fertilizer level in the local adaptability test. This cultivar would be adaptable to middle plain area, south plain area, Yeongnam plain area, east costal area, and south mid-mountainous area. (Registration No.6804)

하수처리 : Hatta No.(MH)와 Enhancement Factor(E)가 고려된 수용 BPA의 오존 산화 모델 개발

박노석 ( No Suk Park ),김성은 ( Sung Eun Kim ),김정현 ( Jeong Hyun Kim ),배철호 ( Chul Ho Bae ),( Tsuno Hiroshi ) 한국물환경학회 ( 구 한국수질보전학회 ) 2004 공동 추계학술발표회 Vol.2004 No.-

축구선수의 Detraining과 Retraining이 혈청지질 및 호르몬농도에 미치는 영향

정정화,박재현,채종훈,성혜련,황지인,윤미숙,노금선,윤종관,윤영학,노순덕,정경숙,박일규,김은희,박현태,박상갑 대한스포츠의학회 1999 대한스포츠의학회지 Vol.17 No.1

The purpose of this study was to investigate the effects of detraining and retraining on serum lipid and hormones in soccer players. Subjects were seven male high-school soccer players. V˙O_2max was determined for each subjects by administering a treadmill test(initial speed: 90m/min, grade: 5%, increasing speed per 3 min: 30m/min). Serum lipid(T-C, TG, HDL-C LDL-C) and hormones(epinephrine, norepinephrine, growth hormones, cortisol) were assayed pre and post detraining in 10, 20, 30 days after retraining. The repeated ANOVA was used to determine significant differences. The 0.05 level of significance was as critical level for the study. The results of the study were as follows: 1. V˙O_2max(ml/min) were 3576.3±204.2ml/min pre detraining, 3234.1±198.9 ml/min post detraining. There are significant(p<.05) difference between pre and post detraining. In 10, 20, 30 days after retraining, V˙O_2max(ml/min) were 3601.4±170.9 ml/min. There were significantly(p<.05) increased in retraining periods. 2. V˙O_2max(ml/kg/min) were significantly(p<.05) decreased from 62.3±2.9 ml/kg/min to 55.9±4.7 ml/kg/min in detraining. In 10, 20, 30 days after retraining, V˙O_2max(ml/kg/min) were 62.4±3.4ml/kg/min, 62.7±2.3ml.kg/min, 67.3±7.2ml/kg/min respectively. There were significantly(p<.05) increased in retraining periods. 3. T-C were significantly (p<.05) increased from 166.6±8.5mg/dl to 175.3±10.3 mg/dl in detraining. In 10, 20, 30 days after retraining, T-C were 160.1± 3.2mg/dl, 156.7±3.7mg/dl, 140.3±9.0mg/dl. There were significantly(p<.05) decreased in retraining periods. 4. HDL-C were 61.4±6.6mg/di pre detraining, 5.3±6.6mg/dl post detraining. There are significant(p<.05) difference between pre and post detraining. In 10, 20, 30 days after retraining, HDL-C were 56.9±7.1mg/dl, 56.4±9.2mg/dl, 57.7±9.1mg/dl respectively. There were no significant difference in retraining periods. 5. The hormones(epinephrine. norepinephrine, growth hormone, cortisol) were changed as same patterns. Epinephrine were 26.0±7.0[g/ml pre detraining, 24.6±3.2pg/ml post detraining. In 10, 20, 30 days after retraining, epinephrine were 26.9±5.6pg/ml, 30.6±6.2pg/ml, 29.4±5.6pg/ml respectively. There were no significant difference in retraining periods. In conclusion, HDL-C, epinephrine, norepinephrine, growth hormone and cortisol were decreased, T-C, LDL-C and TG were increased in detraining. But HDL-C, epinephrine, norepinephrine, growth hormone and cortisol were increased, T-C, LDL-C and TG were decreased in retraining.

머리염색이 인체에 미치는 영향

윤형식,황성호,이현륭,김수호,박연석,권낙현,정호진,김동훈,노현주,홍성호,박병찬,이관,정해관 東國大學校醫學硏究所 2002 東國醫學 Vol.9 No.1

일상생활에서 모발염색은 흔히 접할 수 있는 미용의 한 종류로 특히 젊은층을 중심으로 폭발적으로 유행하고 있다. 염색을 위항 사용하는 약제는 표백제와 발색제 등 각종 화학약품이 사용되고 있으나 이로 인한 건강장해에 대한 연구는 그리 많지 않다. 저자들은 염색이 인체의 모발건강에 미치는 영향을 파악하기 위하여 염색과 관련된 주관적 증상과 모발의 변화에 대한 실험적 연구를 시행하였다. 동국대학교 경주 캠퍼스 재학생 80명을 대상으로 설문조사를 시행하여 염색 유 ·무 및 염색 후에 경험한 증상에 대해 설문 조사하였고, 의과대학 재학생 46명을 대상으로 피부 반응 테스트를 실시하였다. 또한 염색 전후의 모발 탄성도를 측정하였고 모발의 상태를 파악하기 위해 전자 현미경검사를 실시하였다. 설문조사 결과 염색 전에 비하여 염색 후 안구혼탁, 안구건조, 시력저하, 발진 및 접촉성 피부염, 모발손상, 모근손상 등의 증상을 더 많이 경험한다고 호소하였다(p<0.05). 모발손상과 모근손상은 헤어드라이어 사용 빈도에 따라 증가하는 것으로 조사되었다(p<0.05). 피부반응검사에서 가려움증이 가장 많은 증상이었으며 이는 여성보다는 남성에서 높은 것으로 조사되었다. 염색 전후의 모발장력은 염색 전 134.5±10.37g, 염색 128.0±30.69g, 염색 이틀 후 112.5±19.69g으로 나타났다. 염색 전후의 모발의 전자현미경 케라틴 층이 현저히 감소하고 모발이 가늘어지는 차이를 보였다. 염색은 모발손상, 모발 케라틴 손상 및 모근 손상, 발진 및 접촉성 피부반응, 안구혼탁, 안구건조, 시력 저하를 유발한다. 따라서 염색약으로 인한 손상에 대한 주의와 예방이 필요하다고 생각한다. 예방대책으로 염색 전 피부테스트를 통한 적합성 여부를 판단하는 것이 필요하며 가급적 염색을 피하는 것이 좋을 것이다. 염색약에 발암물질이 포함되어있다는 보고도 있어 염색 제조사의 철저한 실험과 염색 물질의 선별이 염색으로 인한 부작용을 최소화하는데 중요한 역할을 할 것이다. Hair coloring has became one of the most popular cosmetic activities to younger generations during last decade. However, there are few studies on the health effect of widespread use of chemical dyes. This study was conducted to study the effects of hair coloring dye on hair and other systems. We conducted a questionnaire survey of 80 persons in Kyongju campus, Dongguk University. We have done open patch skin test on 46 medical students. We also conducted scanning electron microscopy to examine the hair strength and structure before and after hair coloring process. Injury of hair and hair bulb, contact dermatitis, turbid eyes, xerophthalmia, and poor visual acuity were the main symptoms complained after hair coloring (p<0.05). Injury of hair and hair bulb were increased by frequency of hair-dryer use(p<0.05). In open patch test, pruritus was complanined by more than half of the subjects. Mean strength of hairs before and after hair coloring was as follows; 134.5 (SD 10.37)g before hair coloring, 128.0 (SD 30.69)g immediately after hair coloring, and 112.5 (SD 19.69)g after two days. The scanning electron microscopic findings of hair surface before and after hair coloring showed decreased keratin layer and thinning of the hair. Hair coloring induces injury to hair, its keratin layer, and hair bulb as well as contact dermatitis, turbid eyes, xerophthalmia, and poor visual acuity. Therefore, we think that precaution is needed in use of hair coloring dye. To prevent complications induced by hair coloring dye, it is necessary, especially to those with allergy or skin disorders, to perform skin test before action and avoid hair coloring whenever possible. Longterm health effects of hairdye should be studied and manufacturing companies should try to minimize complications induced by hair coloring dye.

월아산 근린공원의 식생구조와 동태

노일,조현남,박우진,문현식 경상대학교 농과대학 부속연습림 2001 演習林硏究報告 Vol.- No.11

The objectives of this study was to investigate the vegetation structure and dynamics in the urban neighborhood park of Mt. Weola. The results obtained were as follows; 1. The woody plants of 18 species are distributed in upper story. By importance value, the upper story was dominated in the order of Pinus densiflora, Qoercus variabilis, Robinia pseudoacacia, Platycarya strobilacea, Alnus firma, Quercus aliena, Carpinus laxiflora. 2. In middle story is formed by 23 species with dominated in the order of Rhus trichocarpa, Prunus sargentii, Quercus variabilis, Platycarya strobilacea, Carpinus laxiflora, Quercus serrata by importance value. 3. 68 species is forming the upper story. Importance values of dominated species was in the order of Rhus trichocarpa, Indigofera kirilowii, Lesdedeza bicolor, Quercus variabilis, Smilax china, Lindera glauca. 4. 78 species is distributed in herbaceous story. And, importance value was high in the order of Oplismenus undulatifolius, Carex siderosticta, Disporum smilacinum, Phryma leptostachya var. asiatica, Paederia scandens, Carex humilis, Spodiopogon sibiricus. 5. The species diversity and evenness in each story were 0.751 and 0.598 for upper story, 0.473 and 0.347 for middle story, 1.429 and 0.794 for lower story and 1.125 and 0.594 for herbaceous story, respectively.