단백질흡착을 막는 소프트콘택트렌즈에 관한 연구

조종수,정영일,나재운,김성호 朝鮮大學校 1997 藥學硏究誌 Vol.18 No.2

양말단에 이크릴레이트를 갖는 폴리에틸렌글리콜 미크로마(PEG macromer)와 또한 PEG macromer와 폴리하이드록시에칠메타아크릴레이트[P(HEMA)] 혹은 폴리(하이드록시에칠메타아크릴레이트-하이드록시프로메타아크릴레이트-비닐피롤리돈)[P(HEMA-co-HPMA-co-NVP)]와 상호침투된 망상구조의 시료가 소프트콘텍트렌즈의 알부민의 흡착을 막기위하여 제조되었다. PEG macromer의 중합으로 macromer의 다관능성기로 인하여 가교된 겔이 형성되었다. P(HEMA-co-HPMA-co-NVP)/PEG IPN계 콘텍트렌즈에서 PEG분자량이 중가할수록 알부민의 흡착량은 감소되었다. 또한 IPN제조시의 PEG의 농도가 짙을수록 알부민의 흡착량은 감소되었다. PEG macromer와 IPN하기전의 P(HEMA)계 및 P(HEMA-co-HPMA-co-NVP)계의 콘텍트렌즈에 비하여 PEG macromer와 IPN함으로서 렌즈의 착용감이 훨씬 상승되었다. Poly(ethylene glycol)(PEG) macromers terminated with diacrylate groups and interpenetrating polymer networks(IPN) composed of poly(hydrowyethyl methacrylate)(PHEMA) or poly(hydrowyethyl methacrylate-co-hydroxypropyl methacrylate-co-N-vinyl pyrrolidone)[P(HEMA-co-HPMA-co-NVP)]and PEG macromer were synthesized with the aim of abtaining protein adsorption resistant soft contact lens. Polymerization of PEG macromer. Crosslinked p(HEMA)or P(HEMA-co-HPMA-co-NVP) chains were interpenetrated into the cross-linked three-dimensional networks of PEG. It was found that albumin adsorption onto the contact lens prepared by P(HEMA-co-HPMA-co-NVP)/PEG IPN decreases with an increase of molecular weight of PEG. Also, it was found that albumin adsorption onto the both contact lens decreases with an increase of concentration of PEG macromer in the IPN preparation. There are also more adequate in the biointerness for the contact lens by P(HEMA)/PEG IPN or P(HEMA-co-HPMA-co-NVP)/PEG IPN than that by P(HEMA) or P(HEMA-co-HPMA-co-NVP).

자연 친화적 골프장 건설을 위한 방안

조영권,윤기운 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.2

Golf has been attracting sensational popularity as public sports in the countries such as Europe and Japan as well as the United States which can be said an advanced country of sports. Furthermore, in recent years, the population who enjoys golf is rapidly growing to the extent that it can take large share in the national economic part so that terms of 'golf industry' and 'golf tour' may appear. Differently from the worldwide trends, golf in our country cannot remove the recognition that golf is 'luxurious amusement' or 'the principal offender of environmental pollution' so that it has resulted in various social or environmental conflicts. The conflict between the golf and the environment is an original conflictive problem in terms of 'exploitation and preservation.' The researcher is going to suggest a method to minimize ecological conflict which is generated in construction and operation of golf course from the viewpoint of development of environment rather than complete settlement. Therefore, this dissertation was trying to suggest co-existence plans of the natural environment factors and construction of golf course through the results from analyzing related precedent research, conclusions were obtained. First, a systematic plan for improvement should be searched so that the System of Evaluation for Environmental Influence which is currently executed could be operated more efficiently in order to minimize the environmental problems which appear when golf course is constructed. Second, as for a plan to push forward constructing a golf course for effective use of land, the current construction manner of golf course which has disproportionately been constructed in particular districts should be controlled, instead, the disperse construction in city or province should be induced. Furthermore, a plan to construct golf course which is environmentally affinitive so that it can make the most of natural spectacle, considering the characteristic of configuration of the ground should be contrived. Especially, the systematic plan for improvement should be worked out to relieve the locational conditions so that some small scaled golf courses (6 hole, 9 hole) can be constructed by means of composing green zone in green belt district, waste reclamation field, or abandoned mine district to secure rest area for citizens. Third, re-utilization of purified water of golf course and installation of artificial reservoir should be completely made as a duty in order to settle conflict against regional residents because of phenomenon of insufficient underwater and agricultural water upon managing the golf course. Fourth, as for a problem of spreading agricultural chemicals which is the most negative conflictive factor according to the result of consciousness of investigation of golf and environment, the rather rational synthetic controlling system against damage by noxious insects should be established and practiced effectively. Fifth, a method to make the most of regional residents actively should be investigated when weeds are removed and agricultural chemicals for golf course are spreaded in order to solve the negative view of regional residents about spreading agricultural chemicals over golf course.

경부에 발생한 침습성 지장종의 치험례

조은영,하종운,김영빈,정윤심 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.2

Lipomas make up 4∼5% of all benign tumors in the body and are most often located on shoulders and backs. Neck lipomas are often developed in the subcutaneous tissues of the posterior neck, Most lipomas have slow growth rate and the recurrence is very rare after surgical excision because of well-defined border. But lipoma originated from muscles(intramuscular and intermuscular lipoma), so called infiltrating lipoma, has ill-defined border and little or no evidence of encapsulation. Histologically the feature of infiltrating lipoma is distinctive. There is a consistent infiltration with dissociation of the surrounding muscle fibers. The overall recurrence rate is less than 5%, but rises to 62.5% when deep infiltrating lipomas are considered separately. Thus infiltrating lipoma is best excised with a margin of normal muscle to avoid recurrence. Its location in the head and neck is uncommon. 18 cases of infiltrating lipoma in the head and neck has been reported to date. Here we report a case of infiltrating lipoma that arises in the head and neck muscle with a review of the literature on the subject.

顎矯正術을 받은 顎顔面 寄形患者의 SKELETAL PATTERN의 變化에 關한 硏究

조원표,조병욱,고백진,이용찬 大韓顎顔面成形再建外科學會 1990 Maxillofacial Plastic Reconstructive Surgery Vol.12 No.3

In the treatment of dentofacial deformities, analysis of skeletal pattern, with evaluation of plaster dental case, is essential procedure. This study was based on 20 patients with dentofacial deformity who were admitted to the department of oral and maxillofacial surgery Kngnam sacred heart Hospital during the period of Jan 1989. We studied serial cephalometric radiogarphs of patients (pre-op, postop immediately, postop 6 moth). The obtained results indicates the good resistance of rigid fixation against relapse in orthognathic surgery.

Adonais 小考

조영운 안양대학교 인문과학연구소 2002 人文科學硏究 Vol.10 No.-

Shelley and Keats, brought together by Leigh Hunt, failed to become friends. Keats did not take to Shelley as kindly as Shelley did to him. They saw enough of one another in the spring of 1817. But their relationship was not that of Milton and King or that of Tennyson and Hallam. Shelley left England for last time 1818 and the poet did not meet again. Keats died in 1821. The poet and the man are two different matters. Though they exist together, they may be unconscious of each other and incapable of deciding on each other's powers and efforts by any reflex act. We may apply this to the subject of "Adonais." It is a the formalized lament of Shelley the poet for Keats the poet. It has rather less to do with the very real but remote grief that Shelley felt for Keats as a man. The poet's concern is with the fate of poets in a world that resists their prophecies and a nature that seems indifferent to their destruction. Shelley's from is the pastoral elegy modeled on Bion's "Lament for Adonis", "Moschus", "Lament for Bion", and Hellenic poems of the second century B.C. Spenser's lament for Sir Philip Sidney, Astrophel and Milton's for Edward Kind influenced Shelley in composing "Adonais."

다중센서 환경에서 공중표적 데이타의 연계

정진영,우영운,고봉홍,김재희,홍인표,조동래 연세대학교 산업기술연구소 1994 논문집 Vol.26 No.2

In the system using one sensor, to describe accurate situation or conclude from information of one source in difficult. Moreover, sensor noise degrades the belief of decision. Multisensor information system, however, can increase the belief of date by imploying more than one source of information simultaneously. Another advantage of the system is that it can accomplish its task with other sources of information when one source malfunctions. In this paper, we implemented data association methods to identity moving flight targets using distance, probability theory, Dempster-Shafter theory for the low level process in the information fusion system. Data association is to classify information from various sources into data groups depending for the same flight object. Times and errors of these data association methods are analyzed.

안면부 Lymphangioma에 의한 Orbital Dystopia의 치험

고영초,정철현,방난석,하지운 大韓成形外科學會 1991 Archives of Plastic Surgery Vol.18 No.4

Vertical orbital dystopia is an abnormally low or high position of one orbit in comparison with the other side which is supposedly normal. The causes of vertical orbital dystopia include Congenital(craniosynostosis, hemifacial microsomia and facial clefting syndrome etc.), Trauma(orbital fracture and irradiation injury etc.), Neoplasms(fibrous dysplasia, antrum carcinoma, intracranial tumors, frontal and ethmoid sinus tumor and angiomatoses etc.) From the stand point of both visual function and asthetic aspects, the correction of vertical orbital dystopia is more difficult for the surgeon than in the case of equally great horizontal displacment. Uncorrected vertical orbital dystopia produce significant facial asymmetry and severe deformity than similar amount of horizontal deformity. The case of a 22 year - old female patient with vertical orbital dystopia associated with large cavernous lymphangioma on right forehead and supraorbital region is presented. The patient had aesthetically good result by correction of vertical orbital dystopia through intracranial approach in spite of impossible complete resection of cavernous lymphangioma.

한국 인구구조의 변화에 관한 분석- 1955년~2020년-

李云英,金初江 韓國保健敎育學會 1989 보건교육건강증진학회지 Vol.6 No.2

This study analyzes the structural characteristics of rapid changes in Korean population, using the data of a census and other data on the changes in the population. Major findings are : 1. During 1950∼1955, annual increase rate of population was about 1.02%, about 2.88% during 1955∼1960, and 1.36% during 1980∼1985. It is expected to decrease to 0.07% during 2015∼2020. 2. Major Age Composition 0∼14 is expected to reduce to 16.5% in 2020 from 41.2% in 1955, while the ratio of population aged 15∼64 is expected to increase to 72.1% from 55.5%. Furthermore, for the population group of age 65 and over is expected to increase from a mere 3.3% to 11.4%. 3. The aging index of population is expected to increase to 69.5 in 2020 from 8.0 in 1955 and so the old dependency ratio is expected to 15.9 from 6.0 4. The median age is expected to 40.2 in 2020 from 19.0 in 1955. 5. In 2020 the child-woman ratio is expected to reduce to 22.3 from 64.7 in 1955. 6. In 2020 the age index of 0∼4 is expected to 57.4 from 169.4 in 1955, and the age index of 65∼69 to 261.7 from 95.6 on the contrary.

Osteotome Sinus Floor Elevation Procedure를 이용한 임프란트 매식

송종운,조용기,박홍주,김영운,오희균,유선열 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.2

Maxillary sinus has an anatomic limitation to bone support available for dental implant. When there is less than 10㎜ of bone remaining between the upper alveolar ridge crest and the maxillary sinus floor, bone augmentation should be considered. In 1994, Summers reported two sinus floor elevation techniques of limmediate implant insertion, using osteotomes, for patients who have at least 5㎜ of bone remaining between the alveolar ridge crest and the maxillary sinus floor. One technique is osteotome sinus floor elevation (OSFE) procedure in which uses osteotomes to elevate the sinus floor. The other is bone-added OSFE (BAOSFE) procedure in which bone graft is added into osteotomy site. Both procedures conserve all of the remaining bone and selectively displace it upward, thereby raising sinus floor. This study was aimed to evaluate the long-term success rate of implants which had been placed by osteotome sinus floor elevation procedure. Between February 1996 and June 1998, 10 implants were placed using OSFE or BAOSFE procedures in 6 patients who had at least 6㎜ of bone remaining between the alveolar ridge crest and the sinus floor. OSFE procedures were performed in patiens, 2∼4㎜ sinus floor elevation was needed, whereas BAOSFE procedures were done in patines, more than 4㎜ sinus floor elevation was needed. During the mean follow-up period of 4 years 4 months (3 years 6 months ∼ 5 years 9 months), no implant was failed and all patients showed good functional results. OSFE and BAOSFE procedures seemed technically easier and less invasive compared to conventional sinus lift procedure. And both procedure have good success rate.

Pilot plant와 Jar test를 이용한 응집제 LAS와 PAC의 수처리 효과 비교

김운중,고창옥,조영관 朝鮮大學校 建設技術硏究所 2001 建設技術硏究 Vol.21 No.1

Juam raw water was used to investigated water treatment efficiency in terms of coagulants and experiment types as jar-test and lab-scale pilot plant. pH of treated water was about 0.1~0.2 high when pilot plant was used than when jar-test was used in all of coagulants as liquid aluminium sulfate(LAS) and poly aluminium chloride(PAC). In comparing pH of surface water between in actual precipitation process with in pilot plant precipitation process when LAS was used, variation range of pH was 0.16 in pilot plant process whereas 0.04 in actual process. In comparing color, turbidity, zeta-potential, aluminium of precipitated surface water, it showed same results in all of coagulants as PAC and LAS and all of processes. In comparing alkalinity of the water, PAC showed alkalinity was 2∼3ppm higher than when LAS was used because of coagulants' characteristics as Al2O3 contents. Langarier indices as Corrosive index were -2.95 in LAS and -2.66 in PAG, which means PAC has less corrosive than LAS. In, comparing the removal of algae using LAS and PAC in jar-test and pilot plant, the removal rates were 80% in jar-test and 75% in pilot plant. The rate was improved to 90% after when incline baffles were used. Therefore, PAC is appropriate in considering prevention of corrosion, on the other side, LAS is appropriate in considering economy.