古文書로 살펴본 조선시대의 기록문화(I) : 남재문고 소장 고문서자료의 유형과 특징 The Type and Character of Korean Older Archives Possessed Namjae Collection

남권희,옥영정 慶北大學校 社會科學大學 2003 社會科學 Vol.15 No.-

스위치드 리럭턴스 전동기의 전압제어 및 전류제어

남정한,권영안 釜山大學校生産技術硏究所 1997 生産技術硏究所論文集 Vol.53 No.-

최근에 가전 및 군수분야등 여러 분야에서 스위치드 리럭턴스 전동기의 응용에 대한 관심이 커지면서 간단하고 저가이면서 양호한 구동특성을 보이는 속도제어 방식에 관한 연구의 중요성이 증대되고 있다. 본 논문에서는 스위치드 리럭턴스 전동기의 속도제어 방식에서 제어 가능한 변수로서 점호각과 소호각, 소정의 전류슈준을 설정하여 이 세가지 제어변수를 고려한 전압제어 및 전류제어 알고리즘을 설계하였다. 특히 스위치드 리럭턴스 전동기 및 인버터 구동회로를 포함하는 전체시스템의 특성을 고려한 전압제어 및 전류제어 알고리즘을 강구하였으며 이와 함께 원칩 마이크로프로세서인 80C196KC를 이용한 전압제어 및 전류제어를 구현하였다. 80C196KC는 고속입출력기능, PWM 기능, A/D컨버터기능 등을 내장하는 16비트 원칩 마이크로프로세서로서 본 연구에서는 이러한 기능들을 적절히 활용하는 전압제어 및 전류제어 알고리즘을 구성하고 상호 비교를 수행하였다. 본 연구에서 설계된 전압제어 및 전류제어 시스템은 실험을 통하여 운전특성 및 성능을 검증하였으며 본 연구를 통하여 80C196KC가 가지는 기능들은 불연속여자특성을 가지는 스위치드 리럭턴스 전동기의 전압제어 및 전류제어 구성에 매우 부합됨을 확인하였다. 본 연구에서 구성된 속도제어 시스템은 간단하고 저가이면서 양호한 구동특성을 보이는 속도제어 시스템에 활용될 것으로 기대된다. The switched reluctance motor is comparable to the inverter driven induction motor. Recently a switched reluctance motor is highly considered for the applications to home appliances and defence industry. Simultaneously a low cost controller with high performances becomes more significant for a switched reluctance motor drive. This paper investigates voltage and current controls of switched reluctance motor which are considering turn-on angle, turn-off angle and current level as controlled variables. One-chip microprocessor 80C196KC, an embedded microcontroller, is well applied to voltage and current controls of switched reluctance motor because a switched reluctance motor is excited by the excitiation modes of pulse type. Voltage and current control algorithms are implemented by utilizing several functions of 80C196KC. The proposed drive system is verified through the experiments, and may be utilized as a drive system with a low-cost and high-performance controller.

銅板핀이 附着된 水平圓筒에서의 自然對流 熱傳達

權純錫,金善政,洪南湖 동아대학교 공과대학 부설 한국자원개발연구소 1987 硏究報告 Vol.11 No.1

This study on the natural convection has been studied experimentally for the heat transfer characteristics of the horizontal cylinder with one copper fin in air according to the various lengths of fin and the various Rayleigh numbers. The experimental results are as follows; 1. When Rayleigh number is constant, local Nusselt number from the cylinder surface is decreased by increasing fin length. 2. When Rayleigh number is constant, mean fin Nusselt number has the highest value at ℓ=0.2 and the increasing value at ℓ<0.2 and the decreasing value at ℓ≥ 0.2 as the fin length increases. 3. Local fin Nusselt number is increased apparently near the base and rapidly near the tip, and the value near the tip is decreased as dimensionless fin length increases. 4. When fin length is constant, mean fin, mean cylinder and mean total Nusselt number are increased by increasing Rayleigh number.

상악골과 비사골동에 이환된 백악질 골화성 섬유종(cemento-ssifying fibroma)의 치험례

권대현,김신유,남정순,구명숙,이봉서,권대근,김종배 大韓顎顔面成形再建外科學會 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.6

The cemento-ossifying fibroma is a benign fibro-osseous tumor that may behave in an aggressive pattern. Although found predominantly in the mandible, most of these unusual tumors may arise in the maxilla and paranasal sinuses. Especially these lesion in the maxilla and sinuses behave more aggressively and are more prone to recur compared to mandibular counterparts. Therefore, more radical approach may be recommended than expectant observation or curettage in the initial management of this neoplasm. This is a case report of cemento-ossifying fibroma extended to maxillary sinus and naso-ethmoidal area treated by wide surgical excision after repeated conservative treatments.

고등급 이형성을 보인 편평톱니샘종

권경주,정성애,심기남,정정화,강석형,송도경,전승정,김혜인 이화여자대학교 의과학연구소 2012 EMJ (Ewha medical journal) Vol.35 No.1

Until recently, colorectal polyps were classified predominantly as hyperplastic or adenomatous. While adenomatous polyps are well-characterized precursor lesions of adenocarcinomas, hyperplastic polyps have been considered as benign lesion. However, some hyperplastic polyps with serrated morphology of the crypts have been recognized to have distinctive features and these polyps were termed ‘serrated adenomas’. Recent data show that sessile serrated adenomas (SSA) might be the precursors of serrated colonic cancers, underlining the necessity of identifying them. SSA is approximately 3% of all polyps, commonly appears as flat or sessile and yellowish due to mucus production. In the pathogenesis of SSA, progression to high grade dysplasia or early invasive carcinoma may be associated with serrated neoplasia pathway different from adenoma-carcinoma sequence. We report a case with a colon polyp diagnosed as sessile serrated adenoma with high grade dysplasia after endoscopic submucosal dissection.

전치태반의 임상적 고찰

정갑인,이해혁,이효환,유정완,남계현,이임순,이권해 순천향의학연구소 1998 Journal of Soonchunhyang Medical Science Vol.4 No.2

Objective : Our purpose was to make preparations of what for proper emergency care and delivery in order to improve maternal and fetal well-being. Methods : The study was undertaken for the clinical evaluation and statistical analysis on the patients with placenta previa who had been admitted and delivered at Soonchunhyang University Hospital from January, 1994 to May, 1998, retrospectively. Results : The incidence of placenta previa was 2.0%. Placenta previa has occurred more often in multigravida(92%) than primigravida(8%). Vaginal bleeding was most frequent(37.3%) presentation. The mean gestational age at the first bleeding episode was 31~35 weeks(46.4%). The type of placenta previa was totalis (31.3%), Partialis(18%), marginalis(32.7%), low lying(18%). Conclusion . This study indicates that the obstetrician and the pediatrician should be prepared for emergency care and delivery of the placenta previa patients, with the improvement of delivery room and neonatal intensive care unit.

眩暈의 原因에 關한 文獻 考察

權貞南 동의대학교 한의학연구소 1997 동의한의연구 Vol.1 No.-

This study is to define the etiology of vertigo and dizziness on the basis of eastern and western medical literatures. The conclusions are as follows: 1. In oriental medicine, the etioloar of vertigo and dizziness is mainly divided into external infection(外感) and internal damage(內傷). Wind(風), cold(寒), dampness(濕), summer heat(暑) are included in the one and in the other, Ki(vital energy)(氣) and blood deficiency(氣血虛), insufficiency of the liver and kidney(肝腎虛), retention of phlegm and fluid(痰飮), emotional disorder(七情內傷) and so on. 2. The main etiology is the case caused by infirmity(虛), which is Ki(氣) of the upper portion of the body being insufficient(上氣不足), deficiency of mar개w-reservoir(髓海不足), insufficiency of liver(肝虛), blood depletion(血枯), insufficiency of YANG(陽虛), vital energy and blood deficiency(氣血虛) etc. 3. The etiology of vertigo and dizziness is contrarily mentioned as excess in the upper and dificiency in the lower(上實下虛) and deficiency of the ewer portion of the body(上虛), but both are ultimately recognized as the concept of infirmity. Furthermore, upper excess can be the case that invades the brain of the weakened body through wind-heat, phlegm-fire, dampness, etc. 4. Vertigo and dizziness arises from an abnormality of the vestibular system but less commonly can be produced by visual or somatic sensory disorders. 5. Vestibular vertigo can be caused by disease of either the peripheral or central vestibular apparatus. Peripheral causes of vertigo no peripheral vestibulopathy, Meniere's syndrome, vestibulotoxic drugs, and central causes of vertigo are cerebrovascula disease, cerebellopontine angle tumors, demyelinating disease. Systemic causes are drug, hypotension, endocrinosis. 6. In comparative study between eastern and western medicine on the etiology of vertigo and dizziness, the peripheral causes are the dysfunction of liver and kidney, wind(風), phlegm(痰), fire(火) and central causes are wind-heat(風熱), phlegm-fire(痰火), dampness(濕) which invades the brain of weakened body. Systemic causes are the insufficiency of liver and kidney(肝腎虛), vital energy and blood deficiency(氣血虛), emotional disorder(七情內傷).

기종성 방광염 1예

마성권,나명윤,박종욱,고정희,염충호,김수완,김남호,최기철 全南大醫大 2001 전남의대학술지 Vol.37 No.2

DC방전에 대한 전류 및 전압 조건에서 1차원 전산모사

김희정,김형용,권득철,윤남식 충북대학교 컴퓨터정보통신 연구소 2006 컴퓨터정보통신연구 Vol.14 No.1

여러 그룹들의 연구 결과로서 DC 방전 전산모사를 위한 여러 가지 수치해석적 방법들이 보고되어 왔다. 대부분의 방법들은 전극에 전압을 경계 조건으로 가정하고 전류를 구하는 방법인데, 때로는 전류값을 조건으로 주고 전극의 전압이 결정되는 방법이 필요한 경우도 있다. 본 연구에서는 전류값이 조건으로 주어진 경우에 전극의 전압이 결정되는 방법을 적용했으며, 1차원 전산모사를 통해 두 가지 방법에 의한 결과를 비교하였다. Various numerical simulation algorithms for simulating DC discharge were reported from many research groups. Most of reported methods uses terminal electrode voltage as a boundary condition to obtain current density. However, in some case, we need to obtain terminal voltage from boundary condition of current. In this paper, the method which obtain voltage under current condition is applied, and we compared the results of two methods through one-dimensional simulations.

等電點 電氣泳動에 의한 배추와 양배추 育成系統에서의 自家不和合性 關聯 glycoproteins의 比較分析

이정명,최근원,민병훈,이태진,백남권,이철우 경희대학교 부설 식량자원개발연구소 1994 硏究論文集 Vol.15 No.-

等電點 電氣泳動을 이용하여 배추의 몇 개의 5-allele 造成과 그들의 F₁에서 自家不和合性의 발현과 관련된 glycoprotein의 band 樣相을 비교 분석한 결과는 다음과 같다. 1. 배추의 內婚系와 이들 간의 에서 柱頭內 glycoprotein의 band pattern을 分析한 결과 兩親의 band pattern이 F₁으로 그대로 遺傳되므로 써 명확한 同定 및 區分이 가능하였다. 2. 공시된 배추의 계통 중에서 8개의 等電點을 발견하였는데 대부분의 系統에서 pl 7.0 또는 8.6에서 major band를 보이고 있었다. 따라서 major band만으로는 S-allele genotype의 명확한 동정이 불가능한 경우도 상당히 있었다. 3. 상기 bands (pI 6.8 and 7.7)에서의 glycoprotein의 分子量은 pI 7.0에서 49,000-50,000이었고 pI 8.6에서 59,000으로 推定되었다. 4. 양배추는 배추에 비해서 glycoprotein의 major bands와 minor bands수가 많고 매우 다양하게 나타나므로써 S-allele 동정이 배추보다 매우 용이할 것임을 보여 주었다. Band patterns of glycoproteins associated with the expression of self-incompatibility were examined in the stigmatic extracts of self-incompatible Chinese cabbage inbred lines and the hybrids. Clear relationship in the band pattern could be confirmed in the parents and their hybrid, indicating the inheritance of S-alleles to the progeny. Total of 8 isoelectric points were indentified in the inbreds, with the major bands at pI 7.0 and 8.6. Thereforne, in some genotypes, identification of cultivars or S-allele genotypes were impossible with the major bands only. The molecular weights of the glycoproteins were estimated to be 49,000-50,000 for pI 7.0 and 59,000 for pI 8.6 bands. The stigmatic extracts from cabbages showed numerous major and minor bands so that identification of S-allele genotype will be much easier as compared to chinese cabbage.