유리체망막수술시 테논낭하마취의 용량에 따른 안압 및 마취효과의 비교

문현승,남동흔,백혜정.Hyun Seung Moon. M.D.. Dong Heun Nam. M.D.. Hae Jung Paik. M.D. 대한안과학회 2006 대한안과학회지 Vol.47 No.11

Purpose: To compare the effects of different volumes of sub-Tenon`s anesthetic on intraocular pressure (IOP) and to evaluate the treatment efficacy of vitreoretinal surgery. Methods: A prospective, clinical trial was conducted on patients undergoing sub-Tenon`s anesthesea for vitreoretinal surgery. Patients were randomized to receive either 3 mL, 5 mL or 7 mL of anesthetic solution. IOPs were measured immediately prior to, immediately after, and at 2, 5 and 10 min after the injection. Pain scores were assigned using a numerical visual analogue scale immediately following surgery and again on postoperative day one. Results: A total of 108 patients (119 eyes) were studied, including 35 eyes in the 3 mL group, 48 eyes in the 5 mL group, and 36 eyes in the 7 mL group. There was significant elevation in mean IOP following injection in all groups and a trend toward a larger increase in the group receiving the larger volume (p<0.01). Mean IOPs were elevated immediately after the injections and reduced at all subsequent time intervals. But reduction to the pre-injection level was only achieved in the 3 mL group. There was no significant difference in patient-reported pain scores among the groups when assessed immediately after surgery or on postoperative day one. The incidence of chemosis and high IOP elevation (40 mmHg ≤) was more frequent in the 7 mL group than the other groups (p<0.05). Conclusions: Sub-Tenon`s anesthesia is effective in vitreoretinal surgery. It would appear that a 3-5 mL volume of anesthetic is safe even when complications are considered.

주거만족을 통한 도시 활성화에 관한 연구 : 전주시를 중심으로

문현승(Moon, Hyun-Seung),이석원(Lee, Seok-Won),이용훈(Lee, Yong-Hoon) 한국부동산정책학회 2018 不動産政策硏究 Vol.19 No.1

Regarding the Jeonju region, the innovative city construction has been forming to be the largest among the new cities. And the situation is such that the new cities have been expanding with the new city of the Haga District and the Jeonju New Town over 10 years ago as the standards. As a result, by taking a look at the differences between the natives who moved when the Jeonju New City had been created and the residency of the dwelling in the old and original city centers, by making the regenerative businesses regarding the old and original city centers smooth, and by comparing with the levels of the satisfactions with the dwellings of the residents in the new city, I will be able to provide the materials needed for the accompanied growth within the downtown of Jeonju, and, at the same time, I will be able to give the proposals and the advices regarding the developments of the other innovation cities and the old and original city centers, too As the result of a path coefficient significance test regarding the factors of the level of satisfaction with the dwelling in the old and original city centers in the Jeonju City, the intention to reside for a long time, and the intention to recommend, as for a factor that gives the influence on the level of satisfaction with regard to residing in the old and original city centers of the Jeonju City, it appeared as being the special characteristic of the location with the positive (+) influence at 0.387. As the result of a path coefficient significance test regarding the factors of the level of satisfaction with the dwelling in new city of the Jeonju City, the intention to reside for a long time, and the intention to recommend, as for a factor that gives the influence on the level of satisfaction with regard to residing in the new city of the Jeonju City, it appeared as being the special characteristic of the location with the positive (+) influence at 0.312. And, as for a factor that gives the influence on the intention to recommend, it was the special, social, and cultural characteristics. And it appeared as having the negative (-) influence at - 0.203. It is judged that the intention to recommend was lower because, in the case of a new city, the accessibility to the public facilities and the cultural facilities falls low. Such a problem of the old and original city centers within the cities and such a problem of the new cities are the problems that have been had internally by the cities, and not only Jeonju, while they have been growing. And the somewhat more improved drawing of the results through such a research in the future is demanded, and this is a task for the future.

전주시 신도시·원도심 주거만족도 비교분석 연구

문현승 ( Moon Hyun-seung ),송수익 ( Song Su-ik ),신화철 ( Shin Hwa-cheol ) 한국지역사회발전학회(구 한국지역사회개발학회) 2018 地域社會開發硏究 Vol.43 No.1

The difference between the old and original city centers and the new cities has a very close relationship with the economy. And we can find out that special, locational characteristics of the dwelling are directly related with the level of the satisfaction. However, to the extent that the re-development through a reorganization of the city cannot be done and there are the relationships between the neighbors, forming the economic foundation and replacing the physical elements of the residence are probably the most important elements in the invigoration of the old and original city centers. Also, regarding the viewpoint of the urban regeneration of the old and original city centers, the urban organization considering the special, local characteristics like the Hanok Village and the formation of the economic foundation are needed as the old and original city centers have been becoming the slums because the residential relocations to the new cities have kept on taking place according to the increases of the economic activities and the employment creations in the new cities. Such a problem of the old and original city centers within the cities and such a problem of the new cities are the problems that have been had internally by the cities, and not only Jeonju, while they have been growing. And the somewhat more improved drawing of the results through such a research in the future is demanded, and this is a task for the future.

광 파라메트릭 증폭기에 기반한 광대역 양자 난수 발생기

문현승(Moon Hyun Seung),허준(Heo Jun) 한국통신학회 2020 한국통신학회 학술대회논문집 Vol.2020 No.2

코발트와 니켈 금속혼합물로부터 무기산 및 유기산에 의한 침출

문현승,송시정,이만승,Moon, Hyun Seung,Song, Si Jeong,Tran, Thanh Tuan,Lee, Man Seung 한국자원리싸이클링학회 2021 資源 리싸이클링 Vol.30 No.2

Leaching experiments from single metal and metallic mixtures were conducted to develop a process for the recovery of cobalt, copper, and nickel in spent lithium ion batteries. Inorganic and organic acid solutions without oxidizing agents were employed. No copper was dissolved in the absence of an oxidizing agent in the leaching solutions. The leaching condition to completely dissolve single metal of cobalt and nickel was determined based on acid concentration, reaction temperature and time, and pulp density. The leaching condition to dissolve all of cobalt and nickel from the metallic mixtures was also obtained. Leaching of the metallic mixture with methanesulfonic acid led to selective dissolution of cobalt at low temperatures.

과산화수소를 혼합한 염산용액으로 폐리튬이온배터리의 용융환원된 금속합금의 침출

문현승,이만승,Moon, Hyun Seung,Tran, Thanh Tuan,Lee, Man Seung 한국자원리싸이클링학회 2021 資源 리싸이클링 Vol.30 No.5

Smelting reduction of spent lithium-ion batteries results in the production of metallic alloys in which reduced cobalt, nickel and copper coexist. In this study, we investigated the leaching of the metallic alloys containing the above three metals together with iron, manganese, and silicon. The mixture of hydrochloric acid and hydrogen peroxide as an oxidizing agent was employed, and the effect of the concentration thereof, the reaction time and temperature, and pulp density was investigated to accomplish the complete leaching of cobalt, nickel, and copper. The effect of the hydrogen peroxide concentration and pulp density on the leaching was prominent, compared to that of reaction time and temperature, especially in the range of 20 to 80℃. The complete leaching of the metals present in metallic alloys, except silicon, was accomplished using 2 M HCl and 5% H₂O₂ with a pulp density of 30 g/L for 150 min at 60℃.

Squeezed State를 기반으로 한 양자 키 분배 기법 분석

문현승(Moon Hyun Seung),허준(Heo Jun) 한국통신학회 2020 한국통신학회 학술대회논문집 Vol.2020 No.8

보존 대퇴근막을 이용한 변형된 크로포드법에 의한 이마근걸이술

문현승,이종혁,백세현.Hyun Seung Moon. M.D.. Jong Hyuck Lee. M.D.. Se Hyun Baek. M.D. 대한안과학회 2005 대한안과학회지 Vol.46 No.1

Purpose: For the correction of ptosis with very poor levator function, frontalis sling operation with various materials has been used. The purpose of this study was to evaluate the effect of the modified Crawford technique using preserved fascia lata. Methods: The photographs and charts of 46 patients who underwent frontalis sling operation using preserved fascia lata from June 2001 to February 2004 at our hospital were retrospectively reviewed. The eyelid crease approach was used with the suturing of the sling material directly to the tarsus. Results: The patients were 27 males and 19 females. There were 20 (44%) unilateral cases and 26 (56%) bilateral cases. The age of the patients ranged from 1 to 65 years at the time of surgery, with an average age of 8.3 years. The success rate was 93% (43/46 patients) for a mean postoperative follow-up of 9 months (range 4~26 months). The complications consisted of one case of overcorrection and 2 cases of undercorrection. Knot exposure occurred in 2 cases. Conclusions: The modified Crawford technique using preserved fascia lata appears to be an effective treatment for severe ptosis. The lid crease formation provides good cosmetic results and the direct suturing of the preserved fascia lata to the tarsus prevents its migration.

IBM Q를 이용한 [[7,1,3]] Steane Code 분석

문현승(Moon Hyun Seung),이성훈(Lee Sung Hoon),민건식(Min Gun Sik),박동규(Park Dong Gyu),허준(Heo Jun) 한국통신학회 2019 한국통신학회 학술대회논문집 Vol.2019 No.1

눈꺼풀처짐을 동반한 위눈꺼풀올림근에 국한된 외안근염 1예

윤제환,문현승,지미정,Je Hwan Yoon,Hyun Seung Moon,Mijung Chi 대한안과학회 2012 대한안과학회지 Vol.53 No.5

Purpose: To present a rare case of idiopathic orbital myositis involving levator palpebrae superioris. Case summary: A 27-year-old male presented with a 1-week history of redness, discomfort, swelling, and drooping of his left upper eyelid. A computed tomography scan showed isolated enlargement of the right superior rectus/levator muscle complex. On examination, there was a left blepharoptosis, although eye movements were normal. The authors treated the patient with 3rd-generation cephalosporin; however, after 3 days, the symptoms did not improve. Subsequently, the patient was diagnosed with idiopathic orbital myositis and treated with oral corticosteroids for 1 month; the symptoms gradually resolved. Conclusions: Idiopathic orbital myositis is a subtype of nonspecific orbital inflammation primarily involving the extraocular muscles. Although the exact cause of orbital myositis is unknown, an immune-mediated pathophysiologic mechanism appears to be one of the causes. Medial rectus myositis is the most common, and isolated levator muscle myositis is very rare. The authors of the present study reported a case of orbital myositis involving the levator palpebrae superioris which should be considered a differential diagnosis of blepharoptosis with eyelid swelling. J Korean Ophthalmol Soc 2012;53(5):707-711