봄철 익산지역 환경대기 중 수용성 이온성분의 일별 침적량

김남송,강공언,김정숙,김현아,신지혜,김병수,최석진 원광대학교 대학원 2008 論文集 Vol.40 No.-

Deposition samples were collected in wet gauge and dry gauge containers at downtown of Iksan city, located southwest of the Korean peninsula, from April 20 to May 1, 2004. The volume of 30-50㎖ deionized water was added for wet gauge before sampling, but dry gauge was installed in the dry state with no deionized water adding. These samples were collected twice a day during daytime and nighttime and were analyzed for anions(Cl^(-), NO^(3-), SO₄^(2-)) and cations (NH₄^(+), Na^(+), K^(+), Mg^(2+), Ca^(2+)) using ion chromatography. Data quality was checked by the data obtained from re-injection of standard solution, Dionex cross check standard solutions, and random several deposition samples, and measured data was estimated to be reliable. Considering the deposition sample volume, the sampling time, the surface area of sampling container, and the ion concentration measured, the deposition amounts were calculated in mg/㎡/day. The sum of ion dry deposition amounts for dry gauge and wet gauge was 9.1±6.7 mg/㎡/day and 26.5±9.1 mg/㎡/day, respectively. A significant increase in deposition amount during rainfall days and Asian yellow dust period was observed for both wet gauge and dry gauge, especially during rainfall days having no difference of deposition amount between in wet gauge and in dry gauge. The mean deposition of all ions measured in this study were higher in wet gauge than in dry gauge because of the surface difference of the sampling container. The mean deposition amount of NH₄^(+), SO₄^(2-), and NO^(3-) in wet gauge were found to be about 27.6 times, 5.5 times, and 3.4 times higher. than that in dry gauge, while the rest of the chemical species were equal or a little higher in wet gauge than in dry gauge. Dominant species in dry gauge were SO₄^(2-) and Ca^(2+), accounting for 14.7% and 47.3% of the total ion dry deposition, whereas those in wet gauge were SO₄^(2-) and NH₄^(+), accounting for 27.7% and 27.1% of the total ion dry deposition, respectively.

소아의 상완골 원위부 과간 골절

이우석,정환용,김우식,김용찬,전택수,김남현,김규태 대한골절학회 2004 대한골절학회지 Vol.17 No.4

상완골 원위부 과간 골절은 소아에서는 매우 드물게 발생되는 골절로 대부분 주관절의 굴곡상태로 주관절 후방부에 직접적인 충격에 의해 발생하는 것으로 보고되고 있다. 전위가 없거나 경미한 경우 도수적 정복술 혹은 도수적 정복술 후 경피적 핀고정술을 시행하며, 전위가 심한 골절이거나 도수적 정복술이 불가능한 경우 관혈적 정복술 후 핀고정술을 시행하는 것으로 알려져 있다. 저자들은 전위된 상완골 원위부 과간 골절 환아 2예에서 각각 도수적 정복술과 관혈적 정복술 후 K 강선 고정술을 시행하여 만족한 결과를 얻었기에 보고하는 바이다. Intercondylar fractures of the distal humerus are very rare in children. The pattern of the fracture would suggest that the mechanism of injury involves a fall directly on the flexed elbow. Most agree that the undisplaced fracture can be managed conservatively. With increasing displacement and comminution, the opinions tend to differ. We suggest that closed reduction with percutaneous K wire pinning and open reduction with percutaneous K wire pinning offer a satisfactory methods by which to treat displaced intercondylar fracture in children.

ATHB12, an ABA-lnducible Homeodomain-Leucine Zipper (HD-Zip) Protein of Arabidopsis, Negatively Regulates the Growth of the Inflorescence Stem by Decreasing the Expression of a Gibberellin 20-Oxidase Gene

Ora Son,허윤선,김윤경,이현정,김성한,김미란,남경희,이명석,김부용,박종범,박정안,이석찬,Atsushi Hanada,Shinjiro Yamaguchi,이인정,김승기,윤대진,Eva So¨derman,천충일 Sookmyung Women's University Research Institute of 2010 여성과 건강 Vol.6 No.1

ATHB12, an ABA-lnducible Homeodomain-Leucine Zipper (HD-Zip) Protein of Arabidopsis, Negatively Regulates the Growth of the Inflorescence Stem by Decreasing the Expression of a Gibberellin 20-Oxidase Gene

Ora Son,허윤선,김윤경,이현정,김성한,김미란,남경희,이명석,김부용,박종범,박정안,이석찬,Atsushi Hanada,Shinjiro Yamaguchi,이인정,김승기,윤대진,Eva So¨derman,천충일 Sookmyung Women's University Research Institute of 2010 여성과 건강 Vol.6 No.1

대장내시경 전처치제로서 Sodium Phosphate 와 Polyethylene Glycol 용액의 전향적 비교 분석

이헌경,김승용,홍원선,민영일,정훈용,김해련,정성애,김석균,심기남,양석균,박의련,조문경 대한소화기내시경학회 1999 Clinical Endoscopy Vol.19 No.3

Background/Aims: Although some authors have suggested that sodium phosphate (NaP) is more effective than polyethylene glycol (PEG) in bowel cleansing, there has been no crossover study proving the superiority of NaP over PEG in bowel cleansing and patients' compliance. The aim of this study was to compare the two solutions for colonoscopy, PEG and NaP, through crossover design with regard to patients' compliance, cleansing ability and side effects. Methods: Thirty patients underwent two separate colonoscopies for colonic polyp(s) with PEG and NaP, respectively. Before and after bowel preparation, blood pressure, body weight, and serum biochemical parameters were measured in all patients. In addition, a detailed questionnaire was used to assess side effects and the patients' preference. The presence of bubbles, types of residual stool, and overall quality of colon cleansing were assessed by one endoscopist blinded to the type of preparation used. In each colonoscopy, two biopsy specimens were taken at rectum. Results: In the NaP group, but not in the PEG group, there were significant changes in several biochemical parameters including sodium (+3.0±3.0 mEq/L), potassium (-0.3±0.3mEq/L), calcium (-0.5±0.5 mg/dL), phosphorus (+3.9±2.2 mg/dL) and osmolarity ( +10.1±9.3 mOsm/kg) after bowel preparation. In addition, the degree of body weight change was greater with NaP (-2.2±2.3 kg) than with PEG (-1.2±2.0 kg) (p=0.06) and the formation of bubbles that disturb luminal observation was more frequently found in the NaP group (p$lt;0.01). There was no difference, however, in the type of residual stool and the overall quality of bowel preparation between the two groups and no significant mucosal change was noted after bowel preparation in both groups. Moreover, PEG was found to be more difficult to take than NaP (p$lt;0.05) and among the 30 patients, 26 (87%) preferred NaP, while only two favored PEG (p$lt;0.01). Conclusions: We conclude that NaP can replace PEG at least in patients with good general condition. Further studies to decrease the incidence of bubbles and to establish subgroups suitable for NaP are needed.

圓光醫大 附屬 第2病院 神經精神科 患者에 對한 統計的 考察(Ⅱ)

박민철,장광철,김상원,김한주,유미경,김훈,유용진,김현정,박남진,오상우,이귀행,노승호,백영석 圓光大學校 醫科大學 神經精神科學敎室 1992 圓光精神醫學 Vol.8 No.1

본 연구는 1986년 7월 11일부터 1991년 7월 10일까지 원광의대 부속 제2병원 신경정신과에서 의래 및 입원치료를 받았던 6,072명의 환자를 대상으로 병원 역학조사를 실시하고 그 결과를 1차조사 (박민철 등1986)와 비교했다. 1.전체 환자 중 남자가 54.4%로 여자보다 많았고, 이리와 이리 인접지역이 84.0%로 대부분의 지역을 나타났다. 의료보장상태는 보험환자가 57.1%, 의료보호환자21.8%, 일반환자 21.1%였으며 연령별로는 20대 24.6%, 30대 22.8%로 20대 30대가 절반정도를 차지했다. 2.외래환자에서는 신경중성장애가 46.0%로 가장 많고 정동장애, 경련성장애 순이며, 입원환자에서는 정신분열증이 30.5%로 가장 많고 기질성정신장애, 정동장애의 순이었다. 3.남자는 신경증성쟝애(23.4%), 정신분열증, 기질성정신장애 순이고 여자는 신경증성장애(39.9%), 정동장애, 정신분열증의 순이었다. 남자가 여자보다 많은 진단은 알코올정신장애(94.6%), 기질성정신장애, 소아정신장애 순이고, 여자가 남자보다 많은 진단은 정동장애(64.5%), 신경증성장애였다. 4.진단별 연령분포에서 신경증성장에는 30대(25.3%), 20대, 40대 순이고, 정신분열증은 20대(40.5%), 30대, 40대 순이며, 정동장애는 20대, 30대, 50대 순이나 비교적 비슷한 융이었다. 5.진단별 발병연령에서 신경증성장에는 20대, 30대가 절반이고,정신분열증은 20대(51.3%), 10대, 30대 순이며 정동장애는 20대(30.7%), 30대, 50대 순이었다. 진단별 평균 발병연령은 신경증성장애 32.7세, 정동장애 36.1세, 정신분열증 23.6세였다. 6.진단별 이병기간은 2년이상이 신경증성장에 28.3%, 정신분열증 68.5% 정동장애 43.9%인데 전체적으로 41.0%였다. 진단별 평균 이병기간은 정신분열증 73.2개월, 정동장애 45.5개월, 신경증성장애 29.5개월이었다. We examined epidemiologic study of 6,072 patients who visited Wonkwang Neuropsychiatric hospital since July 11 of 1986 until July 10 of 1991 and compared this results with previous study(Park et al 1986). The study revealed as follows:1. Of total patients males visited this hosptial more than females as 57.1%, Most of them(84.0%) resided Iri and neighbouring Iri. In the point of insurance, insured patients, medicaid patients and uninsured patients were 57.1%, 21.8% and 21.1% respectively. On the distribution of age, the twenties, the thirties were 24.6%, 22.8% respectively and twenties and thirties were about half of total patients. 2. Of outpatients neurotic disorder was the most as 46.0%, secondly mood disorder and thirdly convulsive disorder, but of inpatients schizophrenia was the most as 30.5%, secondly organic mental disorder and thirdly mood disorder. 3. Of males neurotic disorder was the most as 23.4%, secondly schizophrenia, and thirdly organic mental disorder, but of females neurotic disorder was the most as 39.9%, secondly mood disorder and thirdly schizophrenia. alcoholic mental disorder(94.6%), organic mental disorder, child mental disorder were mostly found in males,but mood disorder(64.5%) and neurotic disorder were mostly found in females. 4. On the distribution of age neurotic disorder was found the most in the thirties(25.3%), next in the twenties and in the forties, and schizophrenia was found the most in the twenties(40.5%), next in the thirties and in the forties, but mood disorder was found the most in the twenties, next in the thirties and in the forties but revealed similar rates relatively. 5. On the distribution of age of onset neurotic disorder developed nearly half during the twrnties and the thirties, schizophrenia developed mostly during the twenties (51.3%), secondly the teens and thirdly the thirties, but mood disorder developed firstly the twenties(30.7%), secondly the thirties and thirdly the fifties. on the average age of onset of illness neurotic disorder, mood disorder and schizophrenia were 32.7 years, 36.1 years and 23.6 years respectively. 6. On the duration of illness more than two years was 28.3% in neurotic disorder, 68.5% in schizophrenia and 3.9% in mood disorder and on the average duration of illness schizophrenia, mood disorder and neurotic disorder were 73.2 months, 45.5 months and 29.5 months respectively.

이온주입이 금속의 일함수에 미치는 영향(Ⅰ)

김현경,강석태,황정남,이철주,최대선,정병두 연세대학교 자연과학연구소 1984 學術論文集 Vol.13 No.-

이온 주입이 일함수 차이에 미치는 영향을 연구하기 위하여 낮은 에너지 이온 가속기, 전자총과 기타 일함수 차이를 측정하기 위한 장치를 설계, 제작하였다. 제작된 이온 가속기의 집속 특성은 이론적인 값과 일치하였다. 즉, 집속 렌즈의 확대율이 이론값은 2.0인데 비하여 1.2로 상당히 작은 값이었다. 또한 집속 렌즈의 전압 V_L과 추출 전압 V_e에 의한 집속 특성 역시 이론값과 매우 잘 일치하였다 . 제작된 장치를 사용하여 다결정 Cu와 Ni의 일함수 차이를 측정한 결과 0.45eV임을 알았다. 그리고 전자선을 이용하여 억제 전위차로 일함수를 측정할때 입사 전자의 반사율을 고려해야 함을 알았다. Low energy ion accelerator, electron gun, and apparatus for measuring work function difference are designed and constructed in order to study the effect of ion implantation on the work function. The focusing properties of accelerator is coincided with theoretical results; the magnification of Einzel lens is found to be 1.2, while theoretical value is 2.0, and the focal properties as a function of V_L/V_e are in good agreement with theory. Using these systems, the work function difference between polycrystalline Cu and Ni is found to be 0.45eV, and the experimental retarding potential plots indicate close agreement with the theoretical values modified by electron reflection.

단속절삭에서 AE신호를 이용한 공구마멸의 감시

김정석,김남경,배준경 한국공작기계학회 1997 한국생산제조학회지 Vol.6 No.2

Characteristics of AE(Acoustic Emission) signal is related to cutting conditions, tool materials, and tool geometry in metal cutting. Relation between AE signal and tool wear was investigated experimentally. Experiment is carried out by interrupted cutting for SCM420 workpiece with TiN coating tool on HSS material. AE RMS voltage and count per event were increased according to tool wear. The major results are as follows : 1) AE RMS value is nearly constant as cutting speed changes, but is rapidly increase as feed rate increases. 2) AE RMS value and Count per Event increase as tool wear increases. 3) It is more effective to monitor tool wear by Incremental rate of AE RMA value than by Incremental rate of count per event.

國産高張力鋼의 熔接部의 機械的 性質에 關한 硏究

南勝義,金聖培,金錫胤 弘益大學校 1982 弘大論叢 Vol.14 No.2

A study has been performed on the mechanical properties and the micro-structure of the welded zone in the high tensile steel produced in Korea. The experimental results indicated that the tensile strength and the hardness were increased in welded zone. The micro-structure of the welded zone was finer than that of the base metal. It may be considered that the increase of the mechanical properties is due to the chemical composition of electrode being different from the base metal and to the structure getting finer through the course of solidification.

대황황련해독탕의 사염화탄소 유발 간장해 보호효과 미치 급성독성

김영석,정은아,장종철,양형길,김남재,조기호,배형섭,이경섭,김동현 WHO COLLABORATING CENTRE FOR TRADITIONAL MEDICINE 2002 東西醫學硏究所 論文集 Vol.2002 No.-

ABSTRACT - This study was performed to evaluate hepatoprotective effect of daewhang-whangryunhaedok-Tang(DWT) on liver injured rats induced by CCI_4 and the acute oral toxicity of it in mice. The activities of serum transaminase(ALT/AST), alkaline phosphatase(ALP) and lactic dehydrogenase(LDH), the levels of serum total cholesterol(TC) and triglyceride(TG), change of liver enlargement, and inhibitory activities of lipid perotidation, catalase and glutathione-S-transfrease(GST) in liver microsome were determined in hepatotoxic rats induced by CCI_4. DWT was significantly reduced the serum ALT, AST, ALP, LDH. TC and TG lecels. And, the increase of lipid peroxidation, decrease of catalase and GST activities in the liver microsome of CCI_4-intoxicated rat were significantly improved by the treatment of DWT. Male and female mice were administered maximum dosages of 5.000 mg/kg b.w. of DWT. After single oral administration of DWT to mice, we observed them daily for 2 weeks.DWT did not induce any toxic signs in the mortalitie, clinical signs, body weight changes, and gross necropsy finfings of mice. Based in these results. It is concluded that DWT may have the hepatoprotective effect on CCI_4 induced hepatotoxicity in rats. Also. DWT may have no side effect and its LD_50 value may be over 5.000mg/kg b.w. in mice.