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李英姬,金允溟,林德奎 단국대학교 1984 論文集 Vol.18 No.-
Because the operational amplifiers have finite gain-bandwidth, sometimes they need frequency compensation. Soliman and Ismail suggested a method of active compensations. They made use of dual operational amplifiers. One of dual amplifiers is operated as a main amplifier and another is operated as a feedback element. Soliman and Ismail fixed the poles of the both amplifers the same. But the gain characteristics are not flat enough by this method. In this paper, detail analysis of their method is presented, and the reason why it has such defects is explained. A generalized method is suggested to ameliorate the gain to phase characteristics. Varying the pole location of a feedback amplifier, we were able to acquire proper gain or phase compensntion. Experimental results and computer calculations make good agreements.
장기투석을 받은 만성 신부전 환자에서 발생한 종양에 관한 고찰
황정화,이혜경,홍현숙,박재성,김대호,권귀향,최득린,황승덕,이희발 순천향의학연구소 1996 Journal of Soonchunhyang Medical Science Vol.2 No.2
The authors tried to evaluate tumor occurrence in long-term dialysis patients with chronic renal failure. Among 359 patients, 20 patients (about 5.6%) were diagnosed with malignancy during long-term dialysis from the period of 1983 to 1995 at our nephrology department. The ultrasonographic and computed tomographic findings including the clinical features of 20 patients that were retrospectively reviewed. The mean age of the patients was 53 (37-75)years old and the ratio of male to female was 9:1. Among the 20 cases, 7 cases of hepatoma (35%) were developed. Among them, urinary tract tumors such as renal and bladder cancer were developed in 4 (20%) and 2 (10%) of the cases. Other malignant tumors were lymphoma, stomach cancer, uterine cervical cancer, cholangiocarcinoma, lung cancer, meningioma, and acoustic neuroma one case of each (each of 5.3%). The most common tumor in patients with chronic renal failure, who were receiving long-term dialysis, was hepatoma and the second most common tumor was cancer of the urinary tract such as kidney and bladder.
김지원,송인성,정현채,최규완,박민정,김정룡,김진,문선희,차성덕,황진혁,김찬규 대한소화기내시경학회 1997 Clinical Endoscopy Vol.17 No.5
Chronic idiopathic inflamatory bowel disease, espcaially Crohn's disease, is frequently complicated with low gastrointestinal stricture. Besides medical treatment of active inflammation, there is no specific, conservative approach to this complication, Repetitive surgery with extensive resections, leading to short bowel syndrome, is often necessary. Balloons have been used for a variety of gastrointestinal stenoses including esophageal, small intestinal, and colonic stricture. Balloon dilation offers many theoretical advantages (safety, and patient comfort) over dilation with bougies. Especially, the availability of large diameter balloon dilators, which pass through the biopsy channel of standard endoscopes (through-the scope balloon or TTS balloon), has promised efficient direct-vision dilatation of strictures without the need of guide wires or fluoroscope. We report a case of colonic Crohn's stricture dilated successfully using TTS balloon catheter.
전치태반의 산전기대요법에서 입원환자와 통원환자의 비교 연구
박선희 ( Sun Hi Park ),김재덕 ( Jae Doc Kim ),정민 ( Min Jeong ),허윤수 ( Yun Su Heo ),김종현 ( Jong Hyeon Kim ),정영주 ( Yong Ju Jeong ),조성남 ( Sung Nam Cho ),김종덕 ( Jong Duk Kim ) 대한산부인과학회 2003 Obstetrics & Gynecology Science Vol.46 No.6
목적 : 전치태반 환자에서 입원과 통원환자의 예후 비교 연구 방법 : 전치태반 환자 중 임신 30주 이후에도 지속적으로 부분 전치태반 이상이면서 질출혈이 없거나 경미한 경우인 60예를 선택하여 입원치료군과 통원치료군으로 각각 30예씩 무작위 추출하여 분류하였으며 모든 환자는 제왕절개술로 분만하였다. 금기가 되지 않는 한 모든 환자는 33주까지 betamethasone 12 mg은 매주 근육주사 하였으며 임신 37주가 되면 성숙된 태아로 간주하고 제왕절개 Objective : Our purpose was to determine the outcome of inpatient and outpatient management of placenta previa. Methods : Sixty women with the initial diagnosis of placenta previa at 30 to 37 weeks` gestation who required hospitalization for no or minimal
임승길,김경래,정윤석,이경미,김동익,김현만,이현철,이은직,안광진,김덕희,윤도훔,박용구,김영수,정상섭,이규창,정우희,김태승,허갑범 대한내분비학회 1992 Endocrinology and metabolism Vol.7 No.4
TSH secreting pituitary adenoma is a rare disorder and represents about 1% of all pituitary adenomas. About 80 cases have so far been reported. We experienced four cases of TSH secreting pituitary adenoma. Three of them were macroadenomas and 1 was microadenoma. Serum TSH levels varied between 4.1~185.6 uIU/ml. The serum -subunit levels of two patients tested were slightly elevated (0.87, 0.96 mIU/ml). Serum TSH and -subunit response to TSH, dexamethasone, T3, bromocriptine, and octreotide were variable when studied. Three patients underwent transsphenoidal microsurgery. One of them received radiotherapy. They were cured. Treatment with octreotide in 1 patient who did not received surgery resulted in normalization of serum TSH and thyroid hormone levels and reduction in tumor size. (J Kor Soc Endocrinol 7:331~342, 1992)
방사선 육종에 의한 화색변이 무궁화 신품종 ‘다솜’ 육성
김상훈(Sang Hoon Kim),김동섭(Dong Sub Kim),김진백(Jin-Baek Kim),하보근(Bo-Keun Ha),이덕만(Duk Man Lee),송희섭(Hi Sup Song),강시용(Si-Yong Kang) 한국원예학회 2015 원예과학기술지 Vol.33 No.2
무궁화 ‘다솜’은 1993년에 채종한 ‘홍순’ 종자를 이듬해에 한국원자력연구원 감마선 저준위조사시설에서 감마선 100㏉를 조사하여 1998년에 가로수용으로 유망한 우수한 화색을 가진 개체를 1차 선발하였다. 2005년부터 2010년까지 6년에 걸쳐 선발 계통의 균일성과 안정성을 검정하였다. 무궁화 ‘다솜’의 주요특성으로 초장은 106㎝로 길며, 분지수는 19개로 많은 편이고 가지는 상향으로 갈색을 띈다. 꽃은 홍단심계 반겹꽃으로 옅은 적색을 띄고, 꽃잎의 길이(4.0㎝)와 폭(3.3㎝)은 중간 정도이나 꽃잎의 겹침 정도가 강하여 전체적인 꽃의 직경(5.8㎝)은 다소 작은 편이다. 개화시간은 17시간 정도로 다른 품종들과 유사하나, 개화일수는 105일로 대조품종인 ‘홍순’(111일)에 비해 짧은 편이다. 잎의 모양을 비롯한 주요 특성은 ‘홍순’과 유사하다. A new Hibiscus syriacus variety, ‘Dasom’, was developed by radiation breeding using gamma ray exposure at the Korea Atomic Energy Research Institute (KAERI). Seeds of the original variety, ‘Hongsun’, were collected in 1993. These seeds were irradiated at 100 Gy dose and M1 seeds w ere planted in a f ield of the KAERI in 1994. Lines w ith preferred flower color t hat were going to be used for street trees were initially selected in 1998. Analyses of characteristics were conducted from 2005 to 2010. The 5-year-old ‘Dasom’ plants were approximately 106 ㎝ in height and averaged 19 branches, and thus were suitable for street trees. The flowers of ‘Dasom’ were semi-double type with medium red color and red eye spots. Petal length and width were about 4.0 ㎝ and 3.3 ㎝, respectively. Flower diameter was slightly small, at about 5.8 ㎝, because of highly overlapping petals. The flowering period of ‘Dasom’ was about 105 days, which was 6 days shorter than that of the original variety, ‘Hongsun’. However, the main charactersistics of ‘Dasom’ including leaf shape were similar to those of the original variety, ‘Hongsun’.