경상분지 남동부에 분포하는 화강암질암의 광물학적 특징

황병훈,이준동,양경희,옥수석 한국광물학회 2004 광물과 암석 (J.Miner.Soc.Korea) Vol.17 No.4

경상분지 남동부에 분포하는 화강암질암은 야외산상 및 암석기재적 특징에 따라 크게 세 그룹으로 나눌 수가 있다. 즉, 그룹Ⅰ은 마그마혼합의 영향을 받은 암체로 염기성 미립 포유암 및 염기성광물 집합체를 다양하게 함유한다. 그룹Ⅱ는 낮은 압력하에서 형성된 천소관입암의 특징을 나타내며, 그룹Ⅲ은 A-형 화강암류의 특징을 보인다. 화강암질암의 광물학적 특징을 각 광물에 대하여 암상별로 살펴본 결과, 그룹에 따라 장석의 용리온토 및 흑운모의 성분 등에서 비교적 체계적인 성분변화를 보여주었다. 각섬석의 경우, 그룹Ⅰ의 암상들은 칼식-각섬석 영역에 속하며 각섬석 지압계에 의한 추정압력은 0.4~2.8 kb에 해당되었다. 그룹Ⅱ에서는 각섬석이 거의 산출되지 않았고, 그룹 Ⅲ의 각섬석은 알칼리-각섬석 영역의 리베카이트에 해당되었다. 흑운모의 화학조성은 비교적 그룹별로 군집을 잘 이루며, 그룹Ⅰ에서부터 그룹Ⅲ의 철질-앤나이트까지 연속적인 변화양상을 보여주었다. 사장석은 지역 및 암상별로 뚜렷한 차이를 나타내지 않으며, 대체로 알바이트, 올리고클레이스, 그리고 안데신의 영역에 해당된다. 그룹별로 퍼타이트 지온계에 의한 용리 온도를 검토한 결과, 그룹Ⅰ은 대체로 300~400℃ 정도이며, 그룹Ⅱ의 등립질화강암과 그룹Ⅲ의 알칼리장석화강암은 500~600℃ 정도로 높게 나타났다. Granitic rocks in the southeastern Gyeongsang. Basin can be classified into three groups. The group Ⅰ contains various mafic microgranular enclave (MME) and/or mafic clot which implies magma mixing or mingling. The group Ⅱ show the feature of shallow depth emplacement at low pressure, and the group Ⅲ is characterized by A-type granite implying extensional tectonic environment. Mineralogical characteristics of the granitic rocks have showed systematic variations in perthite exsolution temperatures and biotite compositions according to their rock facies, although they do not show any distinctively different trend in geography and textures or rock facies. Amphiboles from Group Ⅰ are calcic-amphibole and they were formed at 0.4~2.8 kb in pressure based on the amphibole geobarometry. Amphiboles from group Ⅲ are riebeckite, whileas amphiboles were not observed in Group Ⅱ The chemical composition of biotite defined in clusters showing a continuous spectrum between group Ⅰ to ferric-annite of group Ⅲ. The composition of plagioclase generally plotted in albite, oligoclase, and andesine area without any distinctive differences among their geography or rock facies. The exsolution temperatures by perthite geothermometry are calculated as 300~400℃ in Group Ⅰ, and 500~600℃ in equigranular granite of group Ⅱ and alkali-feldspar granite of group Ⅲ.

제주도 알칼리 현무암에 산출되는 단사휘석의 기원

양경희,황병훈 한국광물학회 2005 광물과 암석 (J.Miner.Soc.Korea) Vol.18 No.1

제주도 알칼리 현무암내에 다양하게 산출되는 단사휘석에 대한 지화학, 조직, 산출상태에 의해 세 종류로 구별되어진다. Ⅰ형의 단사휘석은 상부맨틀을 구성하고 있는 첨정석 페리도타이트의 구성광물로 크롬이 풍부한 투휘석이다. Ⅱ형은 세립의 단사휘석집합체(단사휘석이 거의 85~90%)로 산출되는 휘석암의 구성광물로서, 모암인 현무암질 마그마의 형성 이전에 상부맨틀에서 형성된 암맥이거나 변성기원의 맨틀물질의 일부가 포획되어진 것으로 Ti함량이 비교적 적은 편이며, Ca, Mg성분이 높은 augite이다. Ⅲ형은 모암인 현무암에서 형성된 큐뮬레이트의 일부이거나 조립의 반정으로 산출되는 휘석이다. 산출상태의 차이에 의해 Ⅲ형은 거정(>1 ㎝)의 단결정으로 산출되는 단사휘석(Ⅲa), 거정의 사장석 내에 조립의 사방휘석과 함께 오피틱(ophitic)조직을 형성하며 산출되는 단사휘석(Ⅲb), 반정(<1 ㎝)으로 산출되는 단사휘석(Ⅲc)으로 다시 구분되어진다. Ⅰ형의 단사휘석은 높은 Mg^#와 Si, 가장 낮은 Ti 성분을, Ⅱ형은 Ⅰ형과 Ⅲ형의 중간조성을 보이며, 반면에 Ⅲ형의 높은 Ti성분, 낮은 Si와 Mg^#를 나타내고 있다. 이는 Ⅰ형에서 Ⅲ형으로 갈수록(Ti+Al^Ⅳ)/Si과 Al^Ⅳ/Al^Ⅵ의 비율이 높아진 것으로, 이 세 종류의 단사휘석은 모두 높은 압력환경 하에서 형성되었으며, Ⅰ형이 가장 높은 압력에서 형성되었고, Ⅲ형이 상대적으로 가장 낮은 압력에서 형성되었음을 의미한다. 모암인 현무암이 고압의 환경에서 분별결정작용을 통해 단사휘석(Ⅲ형)을 정출함으로 SiO₂의 결핍과 상대적인 알칼리성분의 부화를 가져오게 되어 알칼리 현무암의 화학조성을 보이는 특성에 기여 한 것으로 해석된다. Three types of clinopyroxenes in alkali basaltic rocks from Jeju Island can be identified on the basis of geochemical and textural data. Type Ⅰ is Cr-rich diopside in spinel peridotites from the upper mantle. Type Ⅱ is augite in fine-grained pyroxenites which are possibly either magmatic vein or metamorphic segregations owing to anatexis of the upper mantle. The augite of Type Ⅱ contains high Ca and Mg and relatively low Ti. Type Ⅲ is thought to be either cumulates or cognate phenocrysts and can be subdivided into Ⅲa, Ⅲb, and Ⅲc based on their occurrence mode. Clinopyroxenes of Type Ⅰ have the highest Mg^# and Si and the lowest Ti, whereas those of Type Ⅲ have lower Mg^#21 Si and higher Ti. These geochemical characteristics indicate that (Ti+Al^Ⅳ)/Si and Al^Ⅳ/Al^Ⅵ increase from Type Ⅰ to Type Ⅲ. It is possibly interpreted that Type I is of the highest pressure origin and Type Ⅲ of the lowest. Fractionation of high-pressure clinopyroxenes would result in evolved undersaturated alkali-enriched liquids, probably producing the alkali-enriched host basaltic rocks in Jeju Island.

Goretex를 이용한 융비술

최진영,민철기,명훈,황순정,서병무,이종호,정필순,김명진 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.4

융비술시 실리콘 고무는 다루기 쉽고 조직 반응이 적어 현대 많이 돌출의 합병증이 생길 수 있다. 저자등은 이러한 실리콘의 단점을 보완할 수 있는 goretex를 사용하여 융비술을 시행하고 비첨에 대해서 자가연골을 이식하여 만족할 만한 결과를 얻었기에 goretex가 안면부 연조직의 증강을 위한 이식재료로 적합하다고 생각되어 문헌고찰과 함께 보고하는 바이다. Many different materials have been used to provide augmentation of the nasal dorsum. this include both autogenous and homogenous materials,as well as allografts. Silicone among the artificial materials has been most widely used. The silicone has some advantages and disadvantages. Goretex(expanded polytetra-fluoroethylene) which has widely used in vascular surgery and abdominal surgery can be used for facial soft tissue augmentation. The author presemts 2 cases of nasal augmentaion using goretex with literature review.

비복신경이식을 이용한 긴 거리의 말초신경 결손부 수복

이종호,이세영,김명진,이은진,안강민,김성민,최원재,명훈,황순정,서병무,최진영,정필훈 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.2

The surgery of oral and maxillofacial area poses the risk of cranial nerve damage such as trigeminal nerve or facial nerve. Inferior alveolar nerve is prone to damage in the third molar extraction, implant installation, orthognathic surgery, open reduction and rigid fixation, and tumor ablation surgery. On the other hands,facial nerve is likely to be damaged or sacrificed with trauma or parotidectomy. In case of inferior alveolar nerve injury, the incidence is reported to be about 1.3%. The nerve function will almost recover in minimal damage, but it won't recover at last in total damage of a part of nerve unit. In latter cases, nerve regeneration in intended by allograft as nerve substitute or various route of merve condit. But the recovery with autograft is believed to be most relialbe mrthod in the rapair of long-span(longer than 15㎜)nerve defect. We have performed autologous sural nerve graft in the repair of nerve defect, which is caused by resection of benign or malignant tumor. Hereby we report the method of nerve harvesting, recovery of defected peripheral nerve and the complications of donor site with the discussion of sural nerve anatomy.

백서 척수후근절로부터 슈반세포의 효과적인 체외 배양법

김성민,이종호,김남열,안강민,최원재,최시호,차미주,이주영,황순정,장정원,명훈,최진영,서병무,정필훈,김명진 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.4

Schwann cells(SCs), an important component of the peripheral nervous system, intract with nerous to mutually support growth and replication for the peripheral nerve regentation. Recently, ading SCs to the lumen of guidance channel is widely tried to improve regeneration or to make regeneration possible over otherwise irreparable gaps. however, it is not easy to isolate and multiplicate SCs as much as enough to help the axonal regeneration. For the allogeneic SCs source for tubular nerve guidance, we developed a little bit improved technique of harvesting and multiplicating SCs. by culturing dispersed dorsal root ganglia in specially designed medium with growth factors and serial processing, we repeatedlly generate relatively homogenous SC cultures. Our technique was compared with other methods of literature using immunostaining methods such as GFAP, S100, BDNF and the total SC count assessment at different time interval after primary culture.

하치조신경 및 설신경 손상 평가를 위한 한국인 정상 성인의 하순-이부 및 혀의 감각 조사

이종호,이세영,송승일,이은진,안강민,김성민,명훈,황순정,서병무,최진영,정필훈,김명진 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.2

In the head and neck area, there are so many sensory nerves, which are sometimes injuried iatrogenically or inadvertently so that involved patients complained of the loss of sensations. In such cases, it is important to judge the degree of injuries and regeneration of nerve for better diagnosis and treatment. Seddon and Sunderland's classification, which is commomly used, is focused on histological change and nerve conduction. As times goes by, it is difficult to access patient's sensory disturbance by this method. Until now, so many methods such as contract threshold, direction, two-point discrimination, pin prick, thermal discrimination and current perception threshold have been introduced for sensory evaluation. However, there hasn't been enough information regarding each methodology nor integrated standard methodology for the measurement. the purpose of this study is to get Korean adult normative sensory values of lower lip,chin and tongue using modified methods of contact thershold, ditection, two point discrimination, pin prick, thermal discrimination and assess degree of regeneration of sensory nerve damage.

Tectonic Implication of A-type Granites across the Yangsan Fault, Gigye and Gyeongju Areas, Southeast Korean Peninsula

Hwang, Byoung-Hoon,McWilliams, Michael,Son, Moon,Yang, Kyounghee Taylor Francis 2007 International geology review Vol.49 No.12

<P> Based on field relations and petrographic characteristics, alkali-feldspar granite in the Gigye area on the western side of the Yangsan fault is classified as an A-type granite. It is mainly composed of quartz, perthitic K-feldspar, and interstitial ferri-annite plus sodic amphiboles such as riebeckite and arfvedsonite, indicating crystallization under hypersolvus, anhydrous conditions. These petrographic features are the same as those of the A-type granite in the Gyeongju area on the east side of the Yangsan fault. These distinctive, pre-Eocene granites are separated by about 21.3 km, indicating Cenozoic dextral strike-slip of this amount along the Yangsan fault.</P>

Cenozoic wrench tectonics and oroclinal bending in SE Korea

Hwang, Byoung-Hoon,Son, Moon,Kim, Jong-Sun,Yang, Kyounghee,Kim, Jin-Seop Informa UK (TaylorFrancis) 2012 International geology review Vol.54 No.6

POSTERS / PM-085 : SELECTION OF POTENT RNA DECOYS THAT INHIBIT HCV RNA HELICASE

(Byoung Hoon Hwang),(Kyung Min Chung),(Sung Key Jang),(Seong Wook Lee) 한국생화학분자생물학회 (구 한국생화학회) 1999 6th IUBMB SEOUL CONFERENCE Vol.- No.-

Petrogenesis of Granitic rocks related with Exchange of Tectonic Environment in the southeastern Gyeongsang Basin

Byoung-Hoon Hwang,Joon-Dong Lee,Kyounghee Yang 대한지질학회 2004 대한지질학회 학술대회 Vol.2004 No.