월경전 기분 변화와 출산후 불안-우울 증상간의 상관성

한창수,김용구,이낙우,김 탁,김해중,김 현,조숙행 대한생물치료정신의학회 2001 생물치료정신의학 Vol.7 No.1

To investigate the relationship between premenstrual mood changes and anxiety, and mood symptoms in the perinatal period , questionaire survey was carried out. There was no significant correlation between premenstrual symptom scale value and Edinburgh postpartum depression scale value. And theme was no relationship between premenstrual symptom scale value and state anxiety inventory scale value in the perinatal period. This findings suggest that premenstrual mood changes are not directly correlated with mood changes in the perinatal period.

遮光程度가 양하(Zingiber mioga)의 生育, 收量 및 無機成分 含量에 미치는 影響

韓海龍,張田益,朴庸奉 제주대학교 1981 논문집 Vol.13 No.-

양하는 생강과 더불어 중요한 香辛菜蔬지만 濟州道에서는 그 栽培法과 양하의 食用價値를 정확히 모르고 있다. 이에 繁殖方法의 하나로서 遮光程度를 달리하였을 경우 양하의 生育과 收量 및 無機物 含量에 미치는 影響을 調査한 結果는 다음과 같다. 1) 양하의 草長과 葉數는 遮光程度가 높을수록 增加하는 傾向을 보였으나 葉소莖과 葉幅은 生育初期에는 處理間에 비슷한 傾向을 보였으나 生育後期에는 增加하는 速度가 緩慢하였고 遮光程度가 낮을수록 增加하였다. 2) 3.3㎡當 收量은 70%遮光區에서 가장 많았고 處理區는 對照區 보다 多少 增加하는 傾向을 보였다. 3) 줄기와 잎에서는 遮光程道가 높을수록 窒素, 인산, 가리, 마그네슘, 망간의 含量이 對照區 보다 增加하였으나 鐵成分 만은 對照區의 줄기에서 가장 많은 含量을 보였다. 4) 위의 實驗의 結果 양하의 生育, 收量 및 無機成分量은 70%遮光에서 增加하였고 앞으로 遮光程度와 處理時期을 달리하여 계속 硏究할 必要가 있다고 생각된다. Among major condimental vegetables, Zingiber mioga and ginger has not yet been examined in cultivation method and contents of inorganic element in Cheju Island. This experiment therefore was carried out to investigate the effect of several shading treatments on growth, yields and contents of inorganic elements of Z. mioga. The results are as follows : 1) The higher the shading degree, the higher the plant height and leaf number, but neck diameter and leaf width showed no significant difference from the early growth period while the late growth period, the lower the shading degree, the higher the neck diameter and leaf width. 2) In the yields of 3.3㎡ unit area, the 70% shading treatment showed sligh increase in compare with other treatment. 3) In contents of the inogranic element of leaf and stem, the higher the shading degree, the higher the content of nitrogen, phosphor, potassium, magnesium and manganese, but only the iron increased in compare with other treatment at the stem of control lot. 4) The result indicated that the growth, yields and contents of inorganic element increased significantily at the 70% shading treatment. The results also point out that study of different shading degree and shading period are necssary.

鱗片 및 珠芽에 對한 低溫處理와 光中斷이 暖地型 마늘의 生育과 二次生長에 미치는 影響

韓海龍,朴庸奉,張田益 제주대학교 1984 논문집 Vol.19 No.-

濟州在來의 珠芽,普通鱗片과 上海早生의 珠芽 및 普通鱗片에 各各 30日,60日間의 低溫(0~5℃)處理를 하여 2月 20日부터 5月 20日까지 120分間을 光中斷處理를 하여 이들 處理가 마늘의 生育 및 鱗莖形成에 미치는 影響을 調査하였다. 1. 濟州普通鱗片은 冷藏處理 其間이 길수록 出現이 빨랐고 珠芽는 길수록 늦은 경향을보였다. 2. 草長,葉長은 普通鱗片이 珠芽보다 컸으며 低溫處理기간이 길수록 增加하였다. 上海早生의 普通鱗片은 自然日長區가 光中斷處理區 보다 增加하였다. 3. 葉墅長 및 葉墅莖은 低溫處理 其間이 길수록 增加했으며 특히 上海普通鱗片은 60일 低溫區에서 光中斷處理 效果가 크게 나타났다. 4. 鱗莖肥大率은 冷藏處理 其間이 길수록 普通鱗片에서 높았고 濟州普通鱗片은 30,60일,上海普通鱗片은 60日 冷藏處理에서 光中斷處理 果가 컸다. 5.珠芽의 植物體重과 球重은 冷藏處理 期間이 길수록 減少했으며 普通鱗片에서도 光中斷處理는 오히려 增加하였다. 6. 鱗片數는 上海珠芽를 제외하고 30日 冷藏處理에서 많았다. 7. 收量은 普通鱗片이 珠芽보다 많았고 光中斷處理는 上海早生의 無處理區와 60일 冷 藏處理구에서 增加하였다. 8.GA₃ 의 含量은 각 處理에 관계없이 鱗片肥大 最盛期에 增加하였으나 收穫期에 가까 울수록 減少하는 傾向을 보였다. Garlic seed bulbils of ecotypes,Cheju Jaere and Shanghae wase,were planted after treatment at 0-5℃for 30 and 60 days respectively, and treated night interruption (120 min) pretreated with low temperature from 20th February to 20th May. The results are summarized as follows. 1.With an increment of the period of low temperature, sprouting of Cheju common clove tended to early while bulbil was late. 2. Plant height, leaf length,leaf sheath length and neck diameter were all promoted by exposure to longer low temperature. however common clove of Shanghae wase grew better during natural day than with night interruption. 3. Bulbing was promoted by longer low temperature in common clove and Cheju Jaere common clove. Treatment for 30 and 60 days at low temperature plus 120min.night interruption showed the most significant increases. 4. Plant weight and bulb weight of bulbils decreased with longer low temperature but in common clove they were increased by night interrutpion. 5. The clove number of the shanghae wase bulbil incresed with 30 days low temperature treatment. 6. Yields per 10a of common clove increased more than bulbils and Shanghae common clove when treated for 60 days at low temperature plus 120 min. night interrutption. 7. GA content incresed at the clove enlargement period,but decresed with the approach of the harvest period.

3중 적층형 압전 트랜스듀서의 주파수 특성

李鎔國,李海龍,韓得永 건국대학교 1995 學術誌 Vol.39 No.2

Frequency characteristics of a three-layered piezoelectric transducer are analyzed with three piezoelectric ceramic disk vibrators and two sheets of thin isolator. The electric input voltage near its fundamental resonant frequency is applied to the center vibrator and the output voltages across the left and the right vibrators are connected in parallel or in series to the resister load. Moreover, equivalent circuits are derived from the Mason's model for parallel connection and series connection. Also, equations of voltage ratio, resonant frequency, phase angle between the Input and output voltages, and bandwidth have been derived. Computed values from those equations are compared with measured values. Both are shown to agree well each other. Key words : Three-layered piezoelectric transducer(3중 적층형 압전 트랜스듀서), Equivalent circuit(등가회로), Parallel connection(병렬연결), Series connection(직렬연결), Resonant frequency(공진주파수), Bandwidth(대역폭)

이동 열원을 고려한 전자빔 용접의 유한요소해석

조해용,정석영,김명한,조창용,이제훈,서정 한국레이저가공학회 2001 한국레이저가공학회지 Vol.4 No.1

Simulation on the electron beam welding of Al 2219 alloy was carried out by using commercial FEM code MARC, which encounters moving heat sources. Due to axisymmetry of geometry, a half of the cylinder was simulated. A coupled thermo-mechanical analysis was carried out and subroutine for heat flux was substituted in the program. The material properties such as specific heat, heat transfer coefficient and thermal expansion coefficient were given as a function of temperature and the latent heat associated with a given temperature range is considered. As a result, the proper beam power is 60kVX60mA and welding speed is 1~1.5 m/min. The residual stress in the heat-affected zone as well as the fusion zone does not increase. It is necessary to use jigs for preventing distortion of cylinder and improving weld quality.

Vital Bleaching이 법랑질 접착에 미치는 영향

김종해,권태엽,권용훈,김교한 大韓齒科器材學會 2003 대한치과재료학회지 Vol.30 No.4

The objective of this in vitro study was to evaluate the effect of bleaching on the composite to enamel bond and surface hardness change. Extracted human premolars were treated with 35% hydrogen peroxide (Sigma Chemical Co, USA) for 1hr/day at 0, 3, 6 and 9 day respectively. For the obsrvation of surface mophology alteration due to the treatment with hydogen peroxide, a SEM (S-4300, Hitachi, Japan) was used. The specimens were ground flat using serial SiC papers and ground ultra-finely using a 0.1㎛ diamond compound paste. To measure the microhardness, five non-carious premolars were ground using SiC papers and ten indentations were made on the surfacd with Vickers hardness tester (FM-7 FUTURE-TEC Inc., Japan). To evaluate shear bond strength, composite was bonded with One Up Bond-F, Prompt L-Pop, AQ Bond to the non-bleached and bleached enamel surface of sixty non-carious premolars. The bonding procedure is postponed for 1 week after bleaching and shear bond strength was measured. All specimens with a SEM. Bleaching created some enamel porosity but the teeth showed nonsignificant morphological chonge as bleaching time increased from SEM analysis. Most microhardness change occured on the first day of bleaching. Bleaching with 35% hydrogen peroxide did not result in significant change in the shear bond strength of composite resin to enamel. In the shear bond strength test, the fractured surfaces of specimens showed mixed adhesive and cohesive failure behavior.

척수 외상의 자기공명영상 및 신경학적 소견 : Delayed MR Image and Correlated Neurology

박용규,정진명,김은상,김재일,송해룡,한종우,신형진 대한신경외과학회 1992 Journal of Korean neurosurgical society Vol.21 No.11

19 patients with traumatic spinal cord injuries and associated neurological deficit were examined by delayed(> 1 month) magnetic resonance imaging(MRI), the result of which were correlated with neurologic and somatosensory evoked potential(SSEP) findings. 5 different MRI patterns were observed in these patients : (1) normal signal intensity(SI) on T1-and T2-weighted images(WI)(pattern N/N, n=6), (2) normal SI on T1-WI and high SI on T2-WI(pattern N/Hi, n=3). (3) low SI on T1-WI and high SI on T2-WI(pattern Lo/Hi, n=6), (4) syrinx(n=2), and (5) cord transection(n=2). The neurologic state was determined using Frankel's classification at admission and MRI time. Pattern N/Hi had best neurologic state except pattern N/N, and pattern Lo/Hi showed worst prognosis except pattern transection. SSEP findings relatively well correlated with neurologic findings, but did not exactly. The cause is probably that SSEP shows predominantly the function of ascending sensory systems of the cord, do not reveal motor pathways, directly or indirectly.

적응가변구조 방법을 이용한 DC MOTOR 제어에 관한 연구

하재해,한창훈,조용갑,최부귀 동아대학교 공과대학 부설 한국자원개발연구소 1994 硏究報告 Vol.18 No.1

Direct methods and indirect methods for the adaptive control of linear plant, DC motor, are currently well known. Recently, methods for combining direct and indirect methods have also been suggested. In this note the latter method is combined with the variable structure method. New adaptive laws are suggested which overcome the principal draw-backs of the variable structure method. While the direct and indirect components of the new method assure stability, the variable structure component improves the transient response of the system. Simulation results are presented to show that the overall system is asymptotically stable in the ideal case, and exhibits robustness and improved performance in the presence of perturbations.

요골 두 아탈구와 동반된 상완골 내 상과 골절 : 1예 보고 A Case Report

이한용,유기원,정진영,송주현,고해석,강용구,손문익 대한골절학회 2003 대한골절학회지 Vol.16 No.2

주관절 손산 중 상완골 내 상과 골절은 단독으로 혹은 주관절 탈구와 동반되어 발생하는 것이 일반적이다. 저자들은 15세 남자 환자의 좌측 요골 두 아탈구가 동반된 상완골 내 상과 골절을 경험하였다. 도수 정복을 시도하였으나 요골 두 아탈구의 정복을 얻을 수 없어 관혈적 정복술로 치료하엿다. 6개월추시 결과 후휴증이 없는 정상적인 관절 상태를 확인할 수 있었다. 연령, 원인 , 손상 기전으로 분석해 보면 이 동반 손상은 발생하기 매우 어렵고, 문헌 탐색 결과 현재까지 동일한 증례를 찾아볼 수 없었으므로 보고하는 바이다. It has been known that fracture of medial epicondylar apophysis of distal humerus may be isolated of associated with elbow deslocations. We have experienced a case which medial epicondylar fracture of the distal humerus was associated with subluxation of the radial head. Initially, we had tried reduction of subluxated radial head by closed method, but failed. Finally open reduction gad been performed. At 6 month after open reduction, clinical and radiological result were excellent. As it is difficult for those associated injuries to occur simultaneously and the similar cases never have been reported yet, we would like to present this case with a review of the literature.

한국인에서 다변성 D12S391 유전좌의 집단유전학적 연구

이용욱,김성민,구태완,이혜린,강일호,한길로,이혜승,황적준 大韓法醫學會 1999 대한법의학회지 Vol.23 No.1

The hypervariable short tandem repeat(STR) locus D12S391 was investigated in a Korean population. A total of 14 alleles were detected by size under denaturing conditions in 517 unrelated individuals. To confirm all of the alleles detected in a Korean population, a total of 34 fragments were sequenced. Prior to allele designation, we constructed the allelic ladders containing 11 alleles sequenced in this study. Allele 18 is the most common with a frequency of 0.281 in Koreans, and one variant allele 19.3 which have been confirmed by sequencing, was detected. The observed heterozygosity, the power of discrimination (PD), and the mean exclusion chance (MEC) for the locus D12S392 is 0.781, 0.946 and 0.652 , respectively. No deviation from Hardy-Weinberg equilibrium was observed in a Korean population (p=0.557). In the 424 meioses in 105 Korean families confirmed using other 17 STR loci, no mutation was detected in locus D12S391. The STR locus D12S391system is useful both for the analysis identification and parternity.