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- 저자 : 김준범(Kim, Joonbeom) (검색결과 351 건)
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초자연골 유리체를 동반한 견봉하 공간의 활막 연골종증 - 증례 보고 -
김준범,박종석,권세원,소재완,김민수,양성석,Kim, Jun-Bum,Park, Jong-Suk,Kwon, Sai-Won,Soh, Jae-Wan,Kim, Min-Soo,Yang, Seong-Suk 대한관절경학회 2012 대한관절경학회지 Vol.16 No.2
활막 연골종증(synovial chondromatosis)은 관절 활막에 존재하는 활액막 세포가 연골모세포로의 화생에 의해 발생하는 것으로 슬관절, 고관절 등의 큰 관절에 주로 발생하며 견관절에 발생하는 경우는 드물다. 술전에 진단하기는 어려운 경우가 많으며, 수술적 활액막 절제술이 치료에 효과적이다. 저자들은 어깨 관절의 불편감과 통증을 호소하는 44세 여자환자에서 초자연골로 구성된 유리체를 동반한 견봉하 공간의 연골종증을 경험하여 이를 문헌 고찰과 함께 보고하고자 한다. Synovial chondromatosis developes by metaplasia of synovial cell into chondroblast in synovium of joint. It most commonly involves large joints such as knee or hip, and rarely occurs in shoulder joint. It is often difficult to be diagnosed preoperatively and surgical synovectomy is known to be effective treatment. We encountered a case of synovial chondromatosis with hyaline cartilage forming loose body in subacromial and subdeltoid synovium on the shoulder of a 44-year old female suffered by pain and discomfort. The authors report this case with a review of the relevant literature.
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염해지에서 모세관수 차단층 설치 유무에 따른 한국잔디 및 한지형 잔디류의 생육
김준범,양근모,최준수,Kim, Jun-Beom,Yang, Geun-Mo,Choi, Joon-Soo 한국잔디학회 2009 한국잔디학회지 Vol.23 No.1
본 연구는 해안가 매립지인 간척지에서 염분이 포함된 물을 관수하면서 한지형잔디와 난지형 잔디 총 8종의 생육을 평가해 보고자 수행되었다. 사용된 관개용수의 전기전도도(ECw)는 $0.28{\sim}3.3\;dS{\cdot}m^{-1}$)의 범위였다. 토양은 모세관수 차단층 처리구와 무처리구를 각각 비교하였다. 모세관수 차단층 처리구의 전기전도도는 $0.55{\sim}4.29\;dS{\cdot}m^{-1}$의 범위를 보였고, 모세관수 차단층을 설치하지 않은 시험구에서는 $1.8{\sim}9.4\;dS{\sim}m^{-1}$의 범위를 나타내었다. 파종 후 관행적인 관리 하에서 잔디의 피복률, 엽색, 품질, 밀도, 생육랑 등을 조사하였다. 간척지 염해지 조건에서 피복률이 90% 이상을 보이며 양호한 생육을 보인 초종은 '중지', 크리핑 벤트그래스, '세녹', '밀록' 등 4개 초종이었다. 켄터키블루그래스, 퍼레니얼 라이그래스, 켄터키+라이그리스 혼합 및 종자형 한극잔디 '제니스' 등 4 초종은 염해 피해를 받아 조성율이 70% 이하로 낮게 나타났다. 모세판수 차단층 설치지역에서는 크리핑 벤트그래스와 켄터키 블루그래스의 생육이 무설치구에 비해 우수하였으며, 난지형 잔디류는 모세관수 차단층 설치유무에 따른 피복률 차이는 관찰되지 않았으나, 뿌리길이는 모세관수 차단층 설치구가 길어지는 경향을 보였다. 본 연구자료는 간척지에 건설되고 있는 골프장에서 염류 모세관수 차단층 설치 유무에 따른 한지형 잔디와 난지형 잔디의 생육조건을 구명하는데 필요한 기초자료로 활용할 수 있을 것이다. This study was carried out to examine the growth performance of 4 species of cool-season grasses and 4 species of zoysiagrasses under salt injury in Seo-san reclaimed area. Grasses were grown on the plots with capillary water interruption layer (WCWIL) and without capillary water interruption layer (WOCWIL) soil systems. Cool-season grass and seeding-type zoysiagrass plots were seeded on 6 Jun, 2006. Vegetative zoysiagrass 'Junggi' was established by sprigging and 'Senock' and 'Millock' were plugged. Electric conductivities of irrigation water (ECw) ranged from 0.28 to $3.3\;dS{\cdot}m^{-1}$. Electric conductivities (ECe) of the soil with capillary water interruption layer and without capillary water interruption layer ranged from 0.55 to $9.4\;dS{\cdot}m^{-1}$ and from 1.84 to $9.4\;dS{\cdot}m^{-1}$ respectively. Leaf color, turf quality, coverage rates, and growth rates were rated visually for 2 years. Zoysiagrass 'Junggi', creeping bentgrass, zoysiagrass 'Senock' and 'Millock' showed acceptable growth at salty fairway condition, while Kentucky bluegrass, perennial ryegrass, Kentucky bluegrass mixed with perennial ryegrass, and seeded zoysiagrass 'Zenith' showed establishment rates below 70%. These results will be useful when choosing turf grass species and cultivars for the golf courses in reclaimed land area.
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The Genotype and Clinical Phenotype of Korean Patients with Familial Hypokalemic Periodic Paralysis
김준범,Man Ho Kim,Soon Ju Lee,김대중,Byung Churl Lee 대한의학회 2007 Journal of Korean medical science Vol.22 No.6
Familial hypokalemic periodic paralysis (HOPP) is a rare autosomal-dominant disease characterized by reversible attacks of muscle weakness occurring with episodic hypokalemia. Mutations in the skeletal muscle calcium (CACNA1S) and sodium channel (SCN4A) genes have been reported to be responsible for familial HOPP. Fifty-one HOPP patients from 20 Korean families were studied to determine the relative frequency of the known mutations and to specify the clinical features associated with the identified mutations. DNA analysis identified known mutations in 12 families: 9 (75%) were linked to the CACNA1S gene and 3 (25%) to the SCN4A gene. The Arg528His mutation in the CACNA1S gene was found to be predominant in these 12 families. Additionally, we have detected one novel silent exonic mutation (1950C>T) in the SCN4A gene. As for a SCN4A Arg669His mutation, incomplete penetrance in a woman was observed. Characteristic clinical features were observed both in patients with and without mutations. This study presents comprehensive data on the genotype and phenotype of Korean families with HOPP.
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김준범,문찬식,장윤희,유호민,이종복,Jun Bum Kim,M,D,Chan Shik Moon,M,D,Yoon Hee Chang,M,D,Ho Min Lew,M,D,Jong Bok Lee,M,D 대한안과학회 2007 대한안과학회지 Vol.48 No.3
Purpose: To study the characteristics of the accompanying amblyopia and strabismus in patients with anisometropia. Methods: We retrospectively reviewed the medical records of 193 patients, who had either spherical or cylindrical anisometropia of more than 1.00D. Patients were divided into four groups: spherical hyperopic anisometropia, spherical myopic anisometropia, cylindrical hyperopic anisometropia, and cylindrical myopic anisometropia. We investigated the accompanying amblyopia and strabismus. Amblyopia was treated with lens correction and patch therapy and we analyzed the results for 78 patients who fulfilled six-month follow-up examinations. Results: There was no significant difference in the frequency of amblyopia between spherical and cylindrical anisometropia. Spherical myopic anisometropia of more than 3.00D showed a significant increase in the incidence of amblyopia (p=0.001). Spherical hyperopic anisometropia of more than 1.00D, cylindrical hyperopic anisometropia of more than 2.00D, and cylindrical myopic anisometropia of more than 2.00D showed an increased tendency for amblyopia. Between spherical and cylindrical anisometropia, there were no significant differences in the results and duration of amblyopia treatment, and type and frequency of strabismus. Conclusions: In spherical anisometropia, hyperopic anisometropia has a higher risk for developing amblyopia. We could find the threshold for the development of amblyopia.
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3차원 적층 패키지를 위한 Cu/Ni/Au/Sn-Ag/Cu 미세 범프 구조의 열처리에 따른 금속간 화합물 성장 거동 분석
김준범,김성혁,박영배,Kim, Jun-Beom,Kim, Sung-Hyuk,Park, Young-Bae 한국마이크로전자및패키징학회 2013 마이크로전자 및 패키징학회지 Vol.20 No.2
3차원 적층 패키지를 위한 Cu/Ni/Au/Sn-Ag/Cu 미세 범프의 열처리에 따른 금속간 화합물 성장 거동을 분석하기 위하여 in-situ SEM에서 $135^{\circ}C$, $150^{\circ}C$, $170^{\circ}C$의 온도에서 실시간 열처리 실험을 진행하였다. 실험 결과 금속간 화합물의 성장 거동은 열처리시간이 경과함에 따라 시간의 제곱근에 직선 형태로 증가하였고, 확산에 의한 성장이 지배적인 것을 확인 할 수 있었다. Ni/Au 층의 존재로 인해 Au의 확산으로 복잡한 구조의 금속간 화합물이 생성 된 것을 확인할 수 있다. 활성화 에너지는 $Cu_3Sn$의 경우 0.69eV, $(Cu,Ni,Au)_6Sn_5$경우 0.84 eV로 Ni이 포함된 금속간 화합물이 더 높은 것을 확인 하였으며, 확산 방지층 역할을 하는 Ni층에 의해 금속간 화합물 성장이 억제됨에 따라 신뢰성이 향상 될 것으로 사료된다. In-situ annealing tests of Cu/Ni/Au/Sn-Ag/Cu micro-bump for 3D IC package were performed in an scanning electron microscope chamber at $135-170^{\circ}C$ in order to investigate the growth kinetics of intermetallic compound (IMC). The IMC growth behaviors of both $Cu_3Sn$ and $(Cu,Ni,Au)_6Sn_5$ follow linear relationship with the square root of the annealing time, which could be understood by the dominant diffusion mechanism. Two IMC phases with slightly different compositions, that is, $(Cu,Au^a)_6Sn_5$ and $(Cu,Au^b)_6Sn_5$ formed at Cu/solder interface after bonding and grew with increased annealing time. By the way, $Cu_3Sn$ and $(Cu,Au^b)_6Sn_5$ phases formed at the interfaces between $(Cu,Ni,Au)_6Sn_5$ and Ni/Sn, respectively, and both grew with increased annealing time. The activation energies for $Cu_3Sn$ and $(Cu,Ni,Au)_6Sn_5$ IMC growths during annealing were 0.69 and 0.84 eV, respectively, where Ni layer seems to serve as diffusion barrier for extensive Cu-Sn IMC formation which is expected to contribute to the improvement of electrical reliability of micro-bump.
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