임신과 연관된 유방삽입물 주의 피막 구형 구축의 변화에 대한 임상적 연구

이윤호,임동헌,윤진호,강소라,김한중,배원배 大韓成形外科學會 1997 Archives of Plastic Surgery Vol.24 No.6

It has been reported that the frequency of the development of peripheral capsuler contracture after breast augmentation surgery using silicone-gel implants amounts between 25 to 50%. Various treatments to cure or prevent the capsular contracture are mow being studied and introduced, including submuscular insertion of breast implants, steroid instillation, oral intake of Vit-E, postoperative breast massage, regional injection of antibiotics, and a saline-filled implantation without gel-bleed. This paper reports, along with the literal study, on the improvement of the softening of capsular contracture condition observed from 12 patients who have undergone pregnancy and delivery after breast augmentation surgery operated at the Plastic surgery departments of Ewha University Medical Center and Seoul National University Medical Center during 1985-1995. Conceivably, the softening of the capsular contracture is attributable to the hormonal change, immunologic and inflammatory alteration, and the masking effect resulting from mammary alveolar hypertrophy. It is believed that a study should be continued on the relationship between the pregnancy and the softening of capsular contracture condition.

암반내 A.E 계측 자료의 처리를 위한 신경 회로망의 적용성 연구

이상은,임한욱 강원대학교 산업기술연구소 2000 産業技術硏究 Vol.20 No.A

To determine the source location of acoustic emission in rock, the least square method has been used until lately but it needs much time and efforts. In this study, neural network system is applied to above model instead of least square method. This system has twenty seven input processing elements and three output processing element. The source locations calculated by above two methods are similarly concordant. The new method using neural network system is relatively simple and easy for calculating source location compared with traditional method.

터널 발파에서 이완영역 감소를 위한 제어발파 기술 연구

임한욱,이영호 강원대학교 부설 석재복합신소재 제품연구센터 2003 석재연 논문집 Vol.8 No.-

터널, 도로 및 철도 개설시 낙석이나 암반 사면의 미끌림을 방지하고 과다한 보수작업을 피하기 위해서는 굴착시 원지반을 손상시키지 않도록 시공하는게 중요하다. 특히 지질조건이 다른 지층에서 손상영역을 감소시키기 위해서는 세밀한 발파가 신중히 시행되어야한다. 본 연구에서는 손상영역을 평가하기 위하여 발파진동을 계측하였다. 총 37회의 진동을 계측하고 이를 바탕으로 진동 추정식을 도출하였다. 손상영역은 발파진동식과 암반의 물성 특히 인장강도와 탄성파 전파 속도 등으로부터 구할 수 있다. 지발당 장약량 2.1375kg로 심빼기발파를 실시하는 경우 본 연구에서 구한 손상영역은 약 1.23m로 예상된다. In tunneling, road and rail road cuts, it is of the most importance that the remaining rock is of high quality in order to avoid rock falls, rock slides and excessive maintenance work. Carefully executed blasting will minimize the damage zone even in severe geological conditions. In this study, blasting ground vibration monitorings are adopted to estimate damage zone in road tunnel. A total of 37 blasts were recorded and empirical particle velocity equation was obtained. The damage zone can be estimated by relationships between vibration velocity(Ⅴ) and associated tensile stress(o). The damage zone assumes to be 1.23m with explosive(2.1375kg) at center cut in tunnel blasting.

國産 火藥類의 種類에 따른 發破 振動値의 比較

林漢旭,金雄秀,李慶雲 江原大學校 産業技術硏究所 1985 産業技術硏究 Vol.5 No.-

The blast-induced ground vibrations is one of the most important factors which is considered to design blasting patterns in urban excavation. To compare with vibration level of different explosives, peak particle velocity of each explosive was measured. The results are summerized as follows. 1. Among the three kinds of explosives, the largest vibration was obtained from the gelatine dynamite, while the smallest was blasting of ammonium nitrate. 2. The vibration levels of ammonim nitrate and slurry explosive were smaller about 35%, 20% respectively than that of gelatine dynamite.

통합 통신망 관리 시스템 구축 방안 연구

이종근,임미경,이광휘,김한경,김태수 國立 昌原大學校 精報通信硏究所 1998 精報通信論文集 Vol.2 No.-

This paper presents a system for internetworking between different network management protocols. The internetworking system between SNMP(Simple Network Management Protocol) and CMIP(Common Management Information Protocol) has been designed. SNMP has been used as a standard protocol in Internet while CMIP has been selected as management protocol in OSI network. This approach is different from previous researches which convert protocols between management protocols. We have newly defined manage objects structure. Thus, even if a new management protocol would be introduce in addition, the new gateway system needs not be designed. We can achieve it through minimum modification in the interface of the managed objects. So, we can support managed objects defined previously using MOVI(Manage Object View Interface) concept presented in our previous research. Through this research, we have some additional benefits: it is able to internetwork between more complicated network management protocols, to increase usefulness of SNMP and CMIP, also it will use in internetworking between new network management protocols.

4-Aminosalicylic acid 誘導體의 合成硏究 (Ⅵ) : P.A.S. di 치환 amide의 Alkoxy 誘導體合成 Alkoxy derivatives of disubstituted p-aminosolicylamide

林中基,李漢九,元正喜 成均館大學校 1981 論文集 Vol.29 No.-

4-Acetaminosalicyldialkylamidc was synthesized by amidation of N.O.-diacetyl-4-aminosalicyl chloride with N.N.-dimethylamine or N.N-diethylamine. 2-Alkoxy-4-acetaminodialkyl-benzamide was synthesized by alkylation of 4-acetamino-salicyl dialkylamide with alkyl halides or dimethyl sulfate.

자유면의 수가 발파진동의 크기에 미치는 영향

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

Blast-vibration tests were carried out to determine the effects of the number of free face on the level of blast vibration. Frequency chatacteristics were also examined by using FFT analysis. To check the effects of the number of free face, charge weight per delay, drilling length, burden and space were applied uniformly and the number of free face was only changed from one to four. The results from tests were checked by regression analysis and K-value.

자연 절리면 전단강도의 크기에 영향을 미치는 요인

임한욱,이무형 강원대학교 부설 석재복합신소재 제품연구센터 2004 석재연 논문집 Vol.9 No.-

자연 절리면 전단강도의 크기에 영향을 미치는 여러 요인중에서 시험편의 크기와 형상효과를 검토하기 위하여 4가지 형태와 6가지 크기별로 직접전단시험을 실시하였다. 즉 수직옹력을 0.29에서 2.65 MPa까지 서로 달리하면서 각 응력별로 최대전단강도, 잔류전단강도, 최대 수직변위 및 강성, 평창곡선 그리고 거?계수를 구하였다. 연구결과 시험편의 크기와 전단강도와 변형거동에 미치는 영향을 상당한 반면에 형태 효과는 거의 없었다. 또한 시험편의 크기가 커질수록 절리 거?계수와 절리 압축강도는 감소를 보였으며, 전단강도 역시 감소하였다. 즉 시험편의 크기가 12.25에서 361 ㎠로 증가함에 따라 전단강도는 최대 72%, 잔류전단강도는 약 57%, 전단강성은 약 80 %감소하였다. 낮은 유효수직옹력하에서 절리암반의 최대 전단강도를 평가하기 위하여 기존의 Barton식을 보정한 새로운 경험식을 제안하였다. The effect of shape and size of specimens on the shear behaviour of joints is studied by performing direct shear tests on four different shapes and six different sizes. The peak shear strength, residual shear strength, peak shear displacement, shear stiffness and dilation curves were also measured with the different normal stress(0.29-2.65 Mpa) and roughness parameters. The results show significant scale effects on the both the shear strength and deformation characteristics, while shape effects can not nearly be found. It is also shown that as a result both the joint roughness coefficient(JRC) and the joint compression strength(JCS) reduce with increasing scale. Shear strengths are also generally decreased with increasing joint area. A series of shear tests shows about 72% reduction in shear strengths, about 57% in residual shear strength, about 80 % in shear stiffness as the area of specimens in crease from 12.25 to 361㎠. To estimate peak shear strength of jointed rock under low normal effective stress, the modified Barton's equation is suggested. ▷ 원문 참조 ◁ where A and B are coefficient to be determined by regression analysis on experimental data.

통풍 환자에서의 지질대사

이은우,강기서,강수용,이한준,김경환,임정일,박철경 중앙대학교 의과대학 의과학연구소 2001 中央醫大誌 Vol.26 No.2

Objective: To evaluate hyperlipidemia, a msjor tisk factor of coronary artery disease, frequently asscoiated with gout patients, we compared the mean lipid level of gout patient with that of non-gout male and accessed statistical significance for treatment of gout patient. Method: This study ws performed in the 266 male gout outpatients of the CAU medical center, who had serum lipid level test from Apr. 1996 to Aug. 2000. Serum uric acid, total cholesterol, triglyceride, HDL -cholesterol, and LDL-cholesterol level were measured after 12 hours of fasting. The patients with high lipid level were further evaluated into each type of the hyperlipidemia through electrophoresis study, and the test results were compared with that of the non-gout male adults(40∼60yr), and the statistical significance was examined. Results : The gout patients showed high levels of total cholesterol, triglyceride, and LDL-cholesterol. Especially they showed high level of triglyceride and LDL-cholesterol which suggested as the risk factors of atherosclerosis and coronary heart disease, but shoewed low level of HDL -cholesterol. But there were no definite relations between lipid level and other factors auch as age of patient, initial uric acid ;eve; and duration od gout. Conclusion: To evaluate the risk factors of atherosclerotic change of cadriac vascular system in gout patient, screening tests of serum lipid level of the patient seem mandatory.

자동차용 시로코팬의 유동특성에 관한 연구

이행남,박길문,이덕구,정한별,김건일,설재림 朝鮮大學校 機械技術硏究所 2005 機械技術硏究 Vol.8 No.1

The sirocco fan is used to get low noise, and it has been applied to a lot of industry field like the heat engine, the fluid instrument power plant, the food industry, environment industry etc... because there are not problems even it is mixed with a any kind of liquid, gas, and solid. The flow characteristics in sirocco fan are investigated by PIV. The experiment using PIV measurement for Test section's flow characteristics acquired velocity distribution, Condition : when sirocco fan in automobile air controller maximum 1450RPM, and a revolution is a variation (l)950RPM, (2)l100RPM, (3) 1250RPM. The agreement a experiment shows the validity of this study and the results of this study would be useful to the engineers who design for the flow systems