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데스크탑 성형시스템을 이용한 소결소재 FDB 성형공정 연구
오솔길,이혜진,이낙규,김종호,송정한,신준희 한국공작기계학회 2009 한국공작기계학회 춘계학술대회논문집 Vol.2009 No.-
FDB formation methods the material which sinters in the form there is a method electro-polishing. But this case is deffect of the corrosion or the material occurs with effect of polishing misfortune and the case where the product value fails occurs. This paper is, first the material which sinters press to use a secondary pattern-die the productivity and work speed improve with the method. The formation condition in the material the assault decides the formation load which falls in standard and until 800㎏f-1500㎏f it divides and a formation characteristic it compares. As a result of showing to get near to the recording standard where the load will increase.
양성 갑상선 낭종에 대한 경화 치료의 유용성: 전향적 연구
오솔길,이정엽,이도훈,문일하,권기남,박기남,이승원 대한이비인후과학회 2012 대한이비인후과학회지 두경부외과학 Vol.55 No.12
Background and Objectives Ultrasonography (USG)-guided sclerotherapy using a sclerotherapic agent such as ethanol, OK-432, recently has gained popularity as a treatment for nonfunctioning benign thyroid nodules. The study evaluates the efficacy and safety of the USG-guided sclerotherapy for that purpose. Subjects and Method Included in the study were 23 patients who had complaints of applied pressure or cosmetic problems due to cystic thyroid nodules, which had been diagnosed as benign and nonfunctioning by fine-needle aspiration biopsy and thyroid function test. Sclerotherapy was performed with OK-432 or 99.9% ethanol following nearly complete evacuation of the fluid from the cystic portion of thyroid nodule. At each USG follow-up, we measured the volume of cysts, symptom scores, cosmetic scores using a visual analog scale, and related complications were examined at postoperative dates of one and six months. Results The volume of thyroid cysts were significantly reduced (p<0.01) with mean volume reduction rates of 77.3±21.2% at postoperative 6 months. The cosmetic score and symptom score were significantly improved following sclerotherapy (p<0.01). Major complications related to sclerotherapy, such as vocal cord paralysis, thyrotoxicosis and tissue necrosis, did not happen during the follow-up observation. Conclusion USG-guided sclerotherapy could be a simple and effective treatment modality for benign cystic thyroid nodules. Korean J Otorhinolaryngol-Head Neck Surg 2012;55:777-81
Long-Term Results of Endoscopic Dilatation for Tracheal and Subglottic Stenosis
오솔길,박기남,이승원 대한이비인후과학회 2014 Clinical and Experimental Otorhinolaryngology Vol.7 No.4
Objectives. The purpose of this study was to assess the long-term results of endoscopic dilatation of airway stenosis and to evaluate predictive factors for favorable results. Methods. Fifty-four patients with tracheal and subglottic stenosis who underwent endoscopic dilatation with at least 12 months follow-up were enrolled in this study. We evaluated predictive factors for final treatment outcome such as ste- nosis length, location, characteristics, procedure type, and the severity of stenosis. Results. The final outcome of endoscopic dilatation showed a cure rate of 40.7%, improvement rate of 46.3%, and failure rate of 13.0%. Patients with mild stenosis or a shorter stenotic segment and those who underwent a touch-up proce- dure following tracheal resection with end-to-end anastomosis showed better outcomes. The cure rate of endoscopic dilatation for patients with shorter mild stenosis was 72.2%. Conclusion. Endoscopic dilatation may be a primary treatment modality for patients with airway stenosis characterized by mild severity and a short stenotic segment.
셰이빙 정밀도 향상을 위한 예비전단 가공에서의 가공여유와 틈새의 영향
오솔길,조대일,강병두,김종호,Oh, Sol-Kil,Jo, Dae-il,Kang, Byung-Du,Kim, Jong-Ho 한국금형공학회 2008 한국금형공학회지 Vol.2 No.3
Shaving in sheet metal forming is defined as a finish process to make the sheared surface clean which was blanked or pierced in the previous shearing stage. In this study the new shaving technique is applied to the progressive operation. The specimen is automatically fed by continuous movement of the strip. Which improve the positioning accuracy higher. For this study a square part which consist of blanking and piercing is selected for investigation and the progressive die which includes pre-piercing, pierce-shaving, half-blanking and blank-shaving etc is prepared for specimens of steel sheet(SPCC) and aluminum alloy sheet(AL5052). Experiments are carried out for several working variables such as shaving allowance, pre-shearing clearance and relative half-blanking depth. Consequently it was confirmed that the shaving by progressive die can be successfully employed to produce the clean parts requiring shaving process and optimum working conditions for shaving SPCC and AL5052 sheet metal are shaving allowance of 0.2mm(1.3% of thickness) and pre-shearing clearance of 5%.
2-level grammar를 이용한 교육용 프로그래밍 언어
오솔길 ( Sol-gil Oh ),박성빈 ( Seong-bin Park ) 한국컴퓨터교육학회 2017 한국컴퓨터교육학회 학술발표대회논문집 Vol.21 No.2
W-grammar(Van Wijngaarden grammar)[1].란 형식 문법의 한 종류인 문맥 자유 문법(Context-free grammar, CFG)의 대안으로, 두 개의 CFG가 서로 상호작용하면서 언어를 정의하도록 구성된 문법을 말하며 그 구성상의 특징을 감안하여 2-level grammar라고도 부른다. 현재 많은 프로그래밍 언어는 CFG를 기 반으로 구성되어 있는데, 본 연구에서는 W-grammar로 교육용 프로그래밍 언어를 정의하여 CFG 기반이 아닌 W-grammar 프로그래밍 언어의 진입점을 제공함과 동시에 기저의 문법에 따른 계산가능성에 대해서 연구하는 토대를 쌓는 것을 목표로 한다.
데스크탑 성형시스템을 이용한 소결소재 FDB 성형공정 연구
오솔길(S. K. Oh),이혜진(H. J. Lee),이낙규(N. K. Lee),김종호(J. H. Kim),송정한(J. H. Song),신준희(J. H. Shin) 한국생산제조학회 2009 한국생산제조시스템학회 학술발표대회 논문집 Vol.2009 No.5
FDB formation methods the material which sinters in the form there is a method electro-polishing. But this case is deffect of the corrosion or the material occurs with effect of polishing misfortune and the case where the product value fails occurs. This paper is, first the material which sinters press to use a secondary pattern-die the productivity and work speed improve with the method. The formation condition in the material the assault decides the formation load which falls in standard and until 800㎏f-1500㎏f it divides and a formation characteristic it compares. As a result of showing to get near to the recording standard where the load will increase.
이경수,오솔길,변장열,이재용 대한이비인후과학회 2008 대한이비인후과학회지 두경부외과학 Vol.51 No.11
Nasal dermoid cysts are rare neoplasms, which are diagnosed frequently in childhood. These lesions are derived from both ectoderm and mesoderm, and have keratinizing epithelium with skin appendages. A fistula, pit, or mass is the common clinical presentation. The diagnosis is primarily based on the medical history, physical examination, clinical symptoms, and radiologic findings. Complete surgical excision is the treatment of choice. A 15-year-old boy presented with a fistula on the nasal vestibule, which existed from birth. Fistulography revealed a contrast-filling fistulous tract and cyst in the caudal portion of the nasal septum. The lesion was removed surgically and pathology confirmed the diagnosis of dermoid cyst. We report, with a review of the literature, a rare case of dermoid cyst that occurred from the nasal septum. (Korean J Otorhinolaryngol-Head Neck Surg 2008;51:1057-60)
이종대,오솔길,황선철,박무균 대한평형의학회 2010 Research in Vestibular Science Vol.9 No.2
Posterior fossa meningioma constitute approximately 10% of meningiomas. It can rarely involve the endolymphatic sac and produce symptoms of Meniere’s disease. We present the case of a 41-year-old male patient who was suffering from recurrent vertigo. The pure tone audiogram revealed low tone hearing loss on right side and temporal magnetic resonance image revealed a meningioma in posterior fossa. Posterior fossa meningioma should be considered in the differential diagnosis of patients with signs and symptoms of Meniere’s disease.