소아에서의 Nd : YAG Laser를 이용한 치은착색제거술 YAG Laser in children

모경희,박헌동,박종휘,김효석,정현구,설재헌,이병채 조선대학교 구강생물학연구소 2003 口腔生物學硏究 Vol.27 No.1

Melanin is normally found in the skin of all people, and normal pigmentation of the intraoral tissues is a relative frequent finding. Gingival hyperpigmentation may cause esthetic problems and embarrassment, especially in patients with a gummy smile. Melanin pigmentation is related to etiologic factor such as hormon, systemic factor, drug, smoking and gingival inflamation. Depigmentation procedure can be Performed by gingival epithelium removing procedure, gingivectomy, free gingival graft, laser therapy, dry ice, Vitamin C and phenol-alcohol method. We could obtain favorable esthetic results by procedures such as Nd: YAG laser. The Nd:YAG laser was set at 4 watt, 50mJ, 80 pulse per second. The procedures were performed with contact mode in all pigmented areas by using a handpiece with a 320㎛ diameter fiber optic. Ablation of the gingival hyperpigmented gingiva appeared healthy, pink, and firm. No recurrence of hyperpigmentation had been found in 6 months of follow-up.

XML 문서를 위한 권한 부여 기법

강정모,이헌길 江原大學校 産業技術硏究所 2001 産業技術硏究 Vol.21 No.A

An XML is an markup language which has been focused on the next generation Web programming language. It easily represents the complex structure of a document, and it is possible to provide the access control over each component of an XML document. An implicit authorization technique means that granting an authorization to a node has effect on granting the same implicit authorization to its all descendants. Therefore, it enhances the time for the authorization grant and reduces the memory required for the authorization information. An authorization technique using an intention type and a authorization replacement solves a redundancy problem and decides whether the access is possible or the authorization conflict occurs at the first attempt.

동천의 하상 퇴적물이 수질에 미치는 영향

이헌모,노종수 동의공업대학 1999 論文集 Vol.25 No.1

Dong Cheon is one of the severely polluted streams by domestic sewage and industrial wastewater. In order to evaluate the effect of domestic sewage and sediment characteristics on water quality, a study was carried out at downstream of Dong Cheon in Busan. The range and mean values of water quality in Dong Cheon were as follows: DO 0.8-11.0mg/l: SS 3-113mg/1: COD 12.4-40.8mg/1: BOD 12.6-48.1mg/1: NH4-N 0-l.10mg/l. Bottom sediment of Dong cheon mainly consisted of fine sand and silt, and contents of organic meter were very high considering the results of sediment BOD. According to the results of this study, stagnation of high pollutant load of water and rapid oxygen uptake of sediment lead the stream water to anoxic condition and it caused offensive oder in the downstream of Done Cheon during summer.

생활하수 및 산업폐수가 유입되는 수영천의 수질특성

이헌모,곽영규 동의공업대학 1999 論文集 Vol.25 No.1

Su-young Cheon is one of the severely polluted streams by domestic sewage and industrial wastewater. A study was carried out at downstream of Su-young Cheon in order to evaluate the effect of domestic sewage and industrial wastewater on water quality. The range and mean values of water quality in Won-Dong bridge were as follows: DO were 0.6-5.7mg/l and 3.82mg/l. SS were 12-79mg/l and 38.4mg/l. BOD 1.6-5.1mg/l, 3.17mg/l, COD 22.4-71mg/l, 39.6mg/l, NH4-N 0.28-1.49mg/l, 2.33mg/l, T-N 0.95-3.92mg/l, 1.76mg/l. In case of T-P were 0.14-0.77mg/l and 0.21mg/l. The range and mean values of water quality in Minrak bridge were as follows: DO were 3.3-5.6mg/l and 4.26mg/l. SS were 11-96mg/l and 53.7mg/l. BOD 0.8-4.7mg/l 2.75mg/l, COD 20-41mg/l, 29.6mg/l, NH4-N 0.02-1.98mg/l, 0.58mg/l, T-N 0.64-2.6mg/l, 1.76mg/l. In case of T-P were 0.12-0.88mg/l and 0.37mg/l.

혐기성여상 반응조에서 여재 충진량이 미생물 유실에 미치는 영향

이헌모,노종수 동의공업대학 2000 論文集 Vol.26 No.1

Sludge retention tests were conducted to crossflow filter media in an-hybrid reactors. Sections of this crossflow filter media were cut to fit a laboratory scale reactor. Five an-hybrid reactors with media volume to reactor volume of 0, 20, 40. 60 and 80% were run under various air flow and hydraulic retention time to estimate sludge retention. The result shows that the concentration of microorganism in effluent was generally higher in the reactor having lower media volume. And 40% media volume of total reactor volume in an-hybrid reactor was evaluated to be sufficient to prevent the wash-out of biological solids and thus to reduce start-up period of the an-hybrid reactor.

동시교체에 의한 예방보전정책에 관한 연구

신헌수,갈원모,함효준 설비관리학회 2001 설비관리학회 학술논문집 Vol.7 No.-

Most studies are focused on the single component or a equipment itself consisting of multiple components. But these policies are not applicable to multi component. If some components are economically independent of all other components of the equipment, replacements policies which assume a single component can be used for those components. However, if the cost of replacement of several parts simultaneous is less than the sum of the costs of separate replacements. the optimal replacement policy can not be applied by the use of a single component model. In this study, therefore, a mode! for determining economical replacement policies for multicomponent equipment is developed.

XML 문성의 효율적인 미세 접근 제어 시스템을 위한 명시적 접근 권한 트리 생성 기법

이헌길,강정모 강원대학교 산업기술연구소 2003 産業技術硏究 Vol.23 No.A

차세대 웹 문서의 새로운 표준으로 자리 잡아 가고 있는 XML은 전자 상거래나 병원 관리 등과 같이 다양한 응용 분야에 적용되고 있다. 이러한 응용 분야는 XML 문서의 각 구성 요소 수준의 세밀한 액서스 제어를 요구한다. 따라서, 현재 XML 문서의 미세 접근 제어 기법에 대한 연구가 활발히 이루어지고 있다. 현재 제안된 XML 문서를 위한 미세 접근 제어 기법은 대부분 묵시적 권한 기법을 사용하여 상위 구성요소에 한번의 권한 부여로 하위 노드에 권한을 부여하는 효과를 가지는 장점을 가지나. 각 구성 요소간의 권한을 체크하는 시간 오버헤드를 가지는 단점이 있다 본 논문에서는 권한을 체크하는 시간을 감소시키기 위하여 XML 문서의 미세 접근 제어를 위한 명시적 권한 기법을 제안하고, 이를 이용하여 노드의 권한에 대한 모든 정보를 저장하고 있는 접근 권한 트리 모델을 제시하였다. 본 논문에서 제안한 접근 권한 트리 모델을 사용하면, 권한 정보를 저장하는 공간 오버헤드가 있지만, 권한 체크 시간을 감소시켜 사용자에게 보다 빠른 뷰를 제공할 수 있다.

독성 물질을 함유한 산업폐수의 생물학적 처리에 관한 연구

최용호,이헌모 동의공업대학 2000 論文集 Vol.26 No.1

Chemical industry wastewaters are highly variable in composition, depending on plant production schedules, and composed principally of soluble organic substances which may not be removed by precipitation and adsorption, and may contain toxic chemical species which would interfere with biological treatment processes. This study was conducted to evaluate the biological treatability of the complex organic chemical wastewater by a complete mixing activated sludge process and the toxic effects on the biological activities through BOD tests at different dilution ratios. Even though the BOD/CODcr and BOD/COD Mn ratio of the composited wastewater appeared to be 0.7 and 8.3, respectively, at least 20 times dilution of the wastewater was required for the biological treatment due to the toxic effects of chemicals in the wastewater on biological activities. BOD data at different dilution ratio could be used to evaluate the optimum dilution for biological treatment of toxic wastewater.

폐암과 동반되어 나타난 기관기관지병증 골연골형성증 1예

이영진,전현수,박시형,김모세,김현주,이승헌,이영민,이현욱,이현경 仁濟大學校 白病院 2010 仁濟醫學 Vol.31 No.-

Tracheobronchopathia osteochondroplastica (TPO) is a rare benign disease of unknown etiology characterized by multiple cartilaginous or bony submucosal nodules, which project into the tracheobronchial lumen. Although some disorders were reported combined with TPO, these seemed to be considered casual. We report a case of TPO that combined with adenocarcinoma of lung. She was 50-year-old non smoking woman presented with chronic cough with right chest pain. Lung mass on right lower lobe was found on chest x-ray, so lung cancer was suspected. Multiple scattered whitish small elevations from trachea to bronchial trees were found on bronchoscopic exam. We mistook these lesions for metastases from lung cancer and biopsies of these lesions were done. Transbronchial biopsy for right lower lobe mass lesion was also done. But biopsies from trachea and bronchus revealed TPO rather than lung cancer. Transbronchial lung biopsy of right lower lobe mass was diagnosed adenocarcinoma of lung. So TPO combined with adenocarcinoma of lung was diagnosed.

十二變에 대한 考察 : 六元正紀大論을 중심으로

채영진,남호현,이석모,여성원,한성규,이재원,안민식,정헌영,금경수 한국전통의학연구소 2003 한국전통의학지 Vol.13 No.1

The six kinds of natural factors(It refers to wind, cold, summer-heat, dampness, dryness and fire.) is constantly moving to maintain the balance of whole climate of one year. Four seasons are the largest mediation of whole climate of one year. The cold and the heat have the relationship of mutual intervention. The dampness and the dryness have it also. In this process they raise various climate appearance. And that various climate appearance influence the whole lives on the earth. This paper is concerned with the classification of them.