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디지털 임플란트 시스템을 전용한 "All-on-4" 개념의 임플란트 보철 증례
김용준,정승미,김경희,방정환,김대환,최병호,Kim, Yong-Jun,Jeong, Seung-Mi,Kim, Kyeong-Hee,Fang, Jeong-Whan,Kim, Dae-Hwan,Choi, Byung-Ho 대한치과보철학회 2018 대한치과보철학회지 Vol.56 No.1
최근 치과치료의 영역에서 디지털 임플란트 시스템은 그 영역을 넓혀 나가고 있다. 디지털 장비들의 기술적 발전에 힘입어 한계점들이 하나 둘씩 극복되었다. 초기 단일치아 수복 정도에나 사용되었던 디지털 임플란트 시스템은 임플란트 수술에서부터 보철물 제작까지 무치악의 영역에서도 사용되고 있다. 본 증례에서는 50세의 하악 무치악 환자가 임플란트를 이용한 교합 재건을 원하였다. 하악의 임플란트 수복을 위해서 "All-on-4" 개념의 디지털 임플란트 시스템 사용을 계획하였고, 무절개 수술을 위한 가이드 장치를 제작하여 수술을 시행하였다. 수술 후, 전악 보철을 디지털 장비를 이용하여 제작하였다. 전체 치료 과정에서 기존의 아날로그 방식(인상채득, 납형 제작, 주조 등)을 가능한 배제하고 디지털 시스템을 이용하여 기공과정 및 임상과정을 최소화하기로 계획하였고 만족할만한 결과를 얻었기에 보고하는 바이다. Recently, digital implant systems are expanding its influence in dental area. Due to technical improvement, they jumped over their limits nowadays. We can use these newest systems to treat edentulous patient, from implant surgery to fabrication of prosthesis. In this case, The patient was a fifty years old female. She had a full edentulous ridge on mandible and wanted to reconstruct occlusion with using implants. We planned to use digital implant system with "all-on-4" concept on mandible and produced surgical guide for flapless implant surgery. After the surgery, we tried to fabricate full arch prosthesis just using a digital devices and confirmed satisfying result.
이종접합 실리콘 태양전지 적용을 위한 선택적 전하접합 층으로의 전이금속산화물에 관한 연구
김용준,김선보,김영국,조영현,박창균,이준신,Kim, Yongjun,Kim, Sunbo,Kim, Youngkuk,Cho, Young Hyun,Park, Chang-kyun,Yi, Junsin 한국전기전자재료학회 2017 전기전자재료학회논문지 Vol.30 No.3
Hydrogenated Amorphous Silicon (a-Si:H) is used as an emitter layer in HIT (heterojunction with Intrinsic Thin layer) solar cells. Its low band gap and low optical properties (low transmittance and high absorption) cause parasitic absorption on the front side of a solar cell that significantly reduces the solar cell blue response. To overcome this, research on CSC (carrier Selective Contacts) is being actively carried out to reduce carrier recombination and improve carrier transportation as a means to approach the theoretical efficiency of silicon solar cells. Among CSC materials, molybdenum oxide ($MoO_x$) is most commonly used for the hole transport layer (HTL) of a solar cell due to its high work function and wide band gap. This paper analyzes the electrical and optical properties of $MoO_x$ thin films for use in the HTL of HIT solar cells. The optical properties of $MoO_x$ show better performance than a-Si:H and ${\mu}c-SiO_x:H$.
영남육괴(嶺南陸塊)에 분포(分布)하는 고기화강암질암(古期花崗巖質岩)의 지질연대(地質年代)와 성인(成因)에 대(對)한 연구(硏究)
김용준,Kim, Yong Jun 대한자원환경지질학회 1986 자원환경지질 Vol.19 No.no.spc
The older granitic rocks of the study area are composed of mainly orthogneiss and foliated granite. These rocks shows mostly mortar or fiaser structure by strong mylonitization and thermal metamorphism during several orogenies. $^{40}Ar-^{39}Ar$ incremental·release ages of these rocks have been determined for 6 hornblende. 7 muscovite and 4 biotite concentrates separated from rocks collected across the Ryeongnam massif. Most $^{40}Ar-^{39}Ar$ age are discordant with Rb-Sr whole rock age of the same area. These ages range from 1998 to 172Ma. This discordant age is interpreted to indicate that samples were in contact with Daebo granite body that was characterized by large and variable $^{40}Ar-^{39}Ar$ ratios. Such ratios most likely resulted from widespread diffusion of the argon liberated from older granitic rocks during several metamorphic overprint. The general trend of the chemical composition of these rocks suggest that most of them are some series of differentiated products by fractional crystallization.
옥천지향사대(沃川地向斜帶) 동남대(東南帶)에서의 화성활동(火成活動)(I): 남원(南原)-거창(居昌)-상주(尙州) 지역(地域)을 중심(中心)으로
김용준,박영석,주승환,오민수,Kim, Yong Jun,Park, Yong Seog,Choo, Seung Hwan,Oh, Mihn Soo 대한자원환경지질학회 1989 자원환경지질 Vol.22 No.4
Igneous rocks of study area consist of Pre-Cambrian orthogneiss, Devonian granite, Triassic foliated granites and Jurassic granites distributed along the southeast margin of Ogcheon Geosynclinal belt(SE-zone), and irregular shaped granitic stocks in the central part of the belt(C-zone). Anorthosite and gaabbro are also present in southern part of the SE-zone in the belt and intruded into gneiss complex of Ryongnam massif. Distribuition of foliated granites shows three linear arrangements which are composed of hornblende-biotite foliated granodiorite, porphyritic foliated granodiorite, biotite foliated granodiorite, leuco foliated granite and two mica foliated granite. Foliated granites generated by dextral strike slip movement at deep level. Jurassic granites composed of several rock facies are considered to be formed by differentiation of magma during Daebo Orogeny. A general trend of the chemical composition of these igneous rocks in study area suggests that most of them corresponding to calc-alkaline rock series was affected under orogeny and I-type granite except for two mica foliated granite. In chondrite normalised REE pattern of these igneous rocks, LREE shows more variable range and strong (-)Eu anomaly than HREE. Geochronological episodes of igneous activity from early Proterozoic to Cretaceous in SE-zone of Ogcheon Geosynclinal belt are two more Pre-Cambrian Orogeny, Devonian Orogeny(Variscan), Songrim Disturbance, Daebo Orogeny and Bulkuksa Disturbance.
운봉(雲峰)-아영(阿英) 지역(地域)에서 나타나는 압쇄상화강암(壓碎狀花崗岩)에 대(對)한 암석기재학적(岩石記載學的) 연구(硏究)
김용준,김정빈,Kim, Yong Jun,Kim, Jeong Bin,Dallmeyer, R.D. 대한자원환경지질학회 1987 자원환경지질 Vol.20 No.2
The characteristic features of mylonitic granite in the Unbong-Ayoung area is as follow; (1) Mylonitic granite is a shearing product from porphyritic granite of Namweon Granites. (2) This rock megascopically shows foliated texture, and their modal compositions according to classification of dynamically metamorphosed rock are correspond to blastomylonite. (3) This rock generated by dextral strike slip movement at deep level. (4) The geochronological data of hornblendes from this rock undertaken by $^{40}Ar/^{89}Ar$ method are 191Ma to 195Ma. (5) The geochronological data of this rock suggests that Namweon Granites might be a product of intrusion and crystallization at the late Triassic or the Jurassic.
김용준,조충호,Kim Yong-Jun,Jo Choong-Ho 한국임상수의학회 1990 한국임상수의학회지 Vol.7 No.1
To investigate the changes of adrenal gland associated with follicular cyst in Korean native cattle, adrenals ans ovaries were collected from 54 Korean native cattle at abbatoir. Adrenals were stained by H-E stain and they were examined under light microscope. Enlargement of adrenal cortex affecting fascicular and reticular zone appeared in cows associated with follicular cyst.
거창(居昌)지역에 분포하는 중생대 화성암류에 대한 연령과 주성분 광물의 화학조성
김용준,조등룡,박영석,Kim, Young Jun,Cho, Deung Lyong,Park, Young Surk 대한자원환경지질학회 1989 자원환경지질 Vol.22 No.2
Devonian Geochang foliated granite and Jurassic plutonic rocks intrude Precambrian metamorphic Complex at Geochang area, southern part of the Korean Peninsular. Among them hornblendes from four Jurassic plutonic bodies which have had no trace of metamorphism or deformation since their intrusion were dated by K-Ar method. Hornblende gabbro dike which intruded Anorthosite of unknown age revealed $204{\pm}10Ma$, and hornblende granite and hornblende-biotite granodiorite were $178{\pm}9Ma$ and $181{\pm}9Ma$, repectively. Also, hornblende diorite which partly showing primary foliations were $178{\pm}9Ma$, so igneous activity of Geochang area, northern part of Jirisan, were active about 180 Ma before. Microprobe data of dated hornblends and other major constituent minerals such as plagioclases and biotites were also reported, and their chemical composition showed systematic changes in terms of lithologic types.
삼척지역(三陟地域)에 분포(分布)하는 우백질화강암류(優白質花崗巖類)의 Rb/Sr 연령(年齡)에 관(關)한 연구(硏究)
김용준,주승환,조등룡,Kim, Yong Jun,Joo, Seung Hwan,Jo, Deung Ryong 대한자원환경지질학회 1984 자원환경지질 Vol.17 No.4
The purpose of this study is to clarify geological age of leucogranitic rocks in the Samcheog area. Petrographical and geochronological features of leucogranitic rock are as follows; (1) These rocks in the area can be classified into two rock types: Moogho leucogranite gneiss and Yimwon leucogranite. (2) These rocks intruded into Precambrian metasediments and are overlain by Paleozoic sedimentary rocks. (3) These rocks are distinctly showing slight foliation and containing garnet and sillimanite which produced by assimilation and contamination. (4) Rb/Sr whole rock age of these rocks indicates an isochron of $2088{\pm}8.5$ m.y. with the initial $^{87}Sr/^{86}Sr$ ratio of $0.7108{\pm}0.0007$.