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신영태,이정호,신승훈,이강욱 충남대학교 의과대학 지역사회의학연구소 1989 충남의대잡지 Vol.16 No.2
To elucidate the clinical feature and clinicopathologic correlation of systemic lupus erythematosus(SLE), the authors analized symptoms and signs, laboratory findings and kidney pathology in 25 patients with SLE who were admitted to the Department of Internal Medicine, Chungnam National University Hospital from My 1985 to October 1989. Kidny biopsy was performed in 15 patients out of 19 patients who showed lupus nephritis. The results were as follows: 1. The ratio of male of females was 1:11.5. They were 14 to 53 years old and mean age was 30.2 years old. The peak age incidence was 3rd and 4th decades. 2. The most frequent chief complaint on admission was fever and chills. Most patients had two or more symptoms such as arthralgia, malar rash, generalized edema or weakness. 3. In 84% of the patients, duration from onset of the disease to diagnosis of SLE was longer than 1 month, which suggested that diagnosis of SLE is not easy in early stage of SLE. 4. The positive anti -DNA was the most frequently observed ARA criteria of SLE. And positive ANA, malar rash, persistent proteinuria, leukopenia, positive LE cell preparation, arthritis and oral ulcer were observed in order of frequency. 5. The frequent and pertinent general symptoms, not included in ARA criteria were fever and chills, arthralgia and abdominal pain which were observed in more than half of the patients. 6. On immunologic test, serum concentrations of C3 and C4 were decreased in 96% of the patients, serum concentration of Ig G, Ig A were increased in 65%, 36.8% and 26.3% of the patients respectively. The RA test was positive in 25% of the patients. 7. Lupus nephritis represented 76% of all SLE patients and pathological classification on 15 patients with lupus nephritis revealed class IV lupus nephritis in 9 patients(60%), class II n 3 patients (21%), class V in 2 patients(13.3%) and class III in 1 patient. 8. 7 out of 9 patients with class IV lupus nephritis and 1 out of 2 patients with class V lupus nephritis showed nephrotic syndrome. Progressive azotemia were observed in 3 out of 9 patient with class IV lupus nephritis and in 1 out of 2 patients with class V lupus nephritis. There were no nephrotic syndroms or azotemia in class II and class III lupus nephritis. 9. Of 17 patients who can be followed up, 9 patients were improved, 5 patients became progressive azotemia and 3 patients resulted in death. The causes of death were myocarditis with pericarditis in 1 patients, pneumonia with acute respiratory failure in 1 patient and CNS involvement of SLE in 1 patient.
양방향성 형상기억합금을 이용한 초소형 공작물 클램핑 장치 개념설계
신우철,박형욱,노승국,박종권 한국공작기계학회 2008 한국공작기계학회 추계학술대회논문집 Vol.2008 No.-
In this paper, a micro workpiece clamping device, which is possible to be applied in micro machine-tools, based on a shape memory alloy is introduced. Especially, the train procedure to transform a commercial one-way shape memory alloy into a two-way shape memory alloy is described. Also, it is experimentally verified that through the train procedure, the applied shape memory alloy ring exhibits two-way shape memory behavior of 220㎛ deformation. In addition, a conceptual design and a basic configuration of the work-piece clamping device using the two-way type shape memory alloy are suggested.
형상기억합금 기반 공구 클램핑 장치의 원심력 영향 해석
신우철,박형욱,노승국,박종권 한국공작기계학회 2008 한국공작기계학회 추계학술대회논문집 Vol.2008 No.-
This paper presents analysis and experimental results for effects of centrifugal force of the SMA-based tool clamping device. First, the corresponding theories of radial deformations resulting from the centrifugal force were described, and based on them, the radial deformations of the contact region between a tool and a tool holder were verified according to rotational speeds. Next, as for 3D-model of the tool holder, analysis of the radial deformations were carried out based on FEM. Finally, the feasibility of the SMA-based tool clamping device at high-rotational speed was experimentally verified by monitoring the clamped tool in mill-machining at 220,000rpm.
신영태,신승훈,이순구,이정호,이강욱 충남대학교 의과대학 지역사회의학연구소 1990 충남의대잡지 Vol.17 No.2
A clinical retrospective study was undertaken in 81 patients with acute pyelonephritis admitted to the Department of Internal Medicine, Chungnam National University Hospital from January 1983 to December 1989. The results were as follows : 1. Total number of patients studied was 81(M/F ratio, 1 : 4.4). The M/F ratio of 22 complicated patients (27.2%) was 1 : 2.7 2. The predisposing factors associated with complicated patients were as follows : 7 cases of urinary tract stone, 7 cases of pregnancy, 4 cases of neurogenic bladder and each one case of prostatic hypertrophy, ureter cancer, bladder diverticulum and polycystic kidney disease. 3. The common subjective symptoms on admission were fever and chills, frank pain, nausea and vomiting. High body temperature and CVA tenderness were noted in 61% and 95% of patients respectively. And 50.6% of patients revealed right CVA tenderness and 28.4% in left, 16% in both respectively. There was no difference in symptoms and signs between complicated and uncomplicated groups 4. In 50 patients(61.7%) microorganisms were isolated on the urine culture specimens. The most common organism was E. coli(80%), and followed by Staphylococcus aureus and Serratia odorifera. E coli was the most frequent pathogen in both female and male patients, and in complicated and uncomplicated groups. (In sensitivity test of complicated and uncomplicated groups). In sensitivity test of causative pathogens to antibiotics, E coli was sensitive to amikacin(93%), tobramycin(83.3%) and gentamycin(79.4%) and 88.9 percent of E coli were ressistant to ampicillin 5. In urinary examination on admission, pyuria was noted in 81% of patients, and proteinuria and microscopic hematuria were noted in 68% and 44% of patients respectively. 6. Within 3 days after antibiotics treatment deference was occured in 73.5% of total patients, and complicated patients revealed delayed defeverence compared to uncomplicated ones.
(Shin Taek Oh),(In Gang Jang),(Sung Wook Kim),(Baik Kee Cho),(Seung Dong Lee) 대한피부과학회 2002 Annals of Dermatology Vol.14 No.1
N/A Hobnail hemangioma(HH)is a benign acquired vascular tumor of endothelial origin which should be differentiated from other malignant vascular neoplasm such as Kaposi`s sarcoma or angiosarcoma.We report a case of hobnail hemangioma in a 21-year-old woman who had a dusky-red patch on her left shin.Histologically,ectatic vascular channels with a single layer of plumped endothelial cells were seen and the vascular channels seemed to dissect the collagen bundles.She underwent treatment with surgical excision with primary closure. (Ann Dermatol 14(1)45-47, 2002).
두개강내로 전이된 Adenoid Cystic Carcinoma 2례 : 증례보고 Report of Two Cases
송재욱,윤상민,이창훈,장지수,이승훈,조경자,강신광 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.10
The authors describe two cases of unusual intracranial metastatic adenoid cystic carcinomas. A 42-year-old woman had a right pariental epidural metastatic mass. presumed hematogenous. spread from a primary tumor in the parotid gland. In second case, a 32-year-old man had a intracranial metastatic adenoid cystic carcinoma mimicking calcified psammomatous meningioma on CT scans. We present these unusual cases with a review of relevant literature and a discussion of possible pathogenesis.
Multi Thread Task Kernel을 이용한 고속, 고 정밀 System 제어 방법
박승민,공영신,전재욱 成均館大學校 科學技術硏究所 1999 論文集 Vol.50 No.2
In this paper, a high-speed, high-precision chip mount system by using DOS rather than a real-time OS is designed and implemented. A monitoring feedback loop to reduce positional errors in this chip mount system is applied, which can reduce some errors due to disturbances as well as truncation errors. Existing chip mount systems will be compared with the designed and implemented chip mount system.