• Journal of Korean Association for Spatial Structures
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• v.24 no.3
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• pp.20-28
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• 2024

• Clinics in Shoulder and Elbow
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• v.17 no.3
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• pp.127-133
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• 2014

Heterotopic ossification (HO) within the substance of the subscapularis tendon is a rare lesion which remains a poorly described condition with little known of the exact mechanisms involved. Furthermore, its clinical importance remains still unclear. To our knowledge, there are no studies present to data regarding HO within the substance of the subscapularis tendon, even with resultant isolated complete tear of the subscapularis tendon. Here we present a case of huge HO associated with unusual isolated complete tear of subscapularis tendon concomitant with tear of biceps long head tendon. After arthroscopic debridement for the complete tear site of biceps long head tendon, mini-open excision of the ossification and subscapularis repair with suture anchor fixation were performed. The patient showed complete recovery of strength and function of the subscapularis at subsequent 24 months follow up.

• Proceedings of the KIEE Conference
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• 1991.07a
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• pp.162-165
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• 1991

Oxygen behaviors in CZ-silicon wafer, grown by the Lucky Advanced Materials Inc. that is a pioneer of silicon material industries in Korea, were investigated to simulate effects on the device performance of oxygen, neglecting the effect of other impurity content, defects and thermal history. Silicon wafers were annealed through simulated 16K SRAM thermal cycle. As initial oxygen concentration increased up to 16.7ppma the amount of oxygen precipitation increased up to 10.6ppma and the bulk microdefect density increased up to $10.3{\times}10^3/mm^2$, but the depth of the denuded zone decreased to $5.0{\mu}m$

• Journal of environmental and Sanitary engineering
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• v.22 no.1 s.63
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• pp.49-56
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• 2007

The effects of pH, time, dielectric constant of solvent and crosslink on adsorption of metal ions by 1-aza-18-crown-6-styrene-DVB(divinylbenzene) resin(resin) adsorbent were investigated. The metal ions were showed fast adsorption on the resins in over pH 3. The equilibrium time for adsorption of metallic ions was about two hours and the adsorption selectivity determined in methanol was in increasing order $UO_2^{2+}>Mg^{2+}>Ho^{3+}$ ions. The adsorption was in the order of 1%, 2% and 4% crosslink resin and adsorption of resin decreased in proportion to the order of dielectric constant of solvents.

• Structural Monitoring and Maintenance
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• v.1 no.3
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• pp.339-356
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• 2014

This study has been motivated to evaluate the practicality of numerical simulation of impedance monitoring for damage detection in steel column connection. In order to achieve the objective, the following approaches are implemented. Firstly, the theory of electro-mechanical (E/M) impedance responses and impedance-based damage monitoring method are outlined. Secondly, the feasibility of numerical simulation of impedance monitoring is verified for several pre-published experimental examples on steel beams, cracked aluminum beams, and aluminum round plates. Undamaged and damaged steel and aluminum beams are simulated to compare to experimental impedance responses. An aluminum round plate with PZT patch in center is simulated to investigate sensitive range of impedance responses. Finally, numerical simulation of the impedance-based damage monitoring is performed for a steel column connection in which connection bolts are damaged. From the numerical simulation test, the applicability of the impedance-based monitoring to the target steel column connection can be evaluated.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2001.11a
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• pp.165-166
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• 2001

HO$_2$ radical plays pivotal roles in the tropospheric $O_3$ formation chemistry. This radical oxidizes NO to NO$_2$ and thus HO$_2$ radical can lead to in-situ ozone formation. Numerous methods have been tried to measure concentrations of atmospheric HO$_2$ in gas phase. Detecting methods applied in the air are a chemical amplifier (Cantrell et al., 1996), FAGE (Fluorescence Assay with Gas Expansion) (Hard et al., 1984), and LIF (Laser-induced Fluorescence) (Stevens et al., 1994). These methods have been limited because of low sensitivity and interferences such as $O_3$, NO, and itself (Stevens et al.,1994). (omitted)

• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.1354-1357
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• 2013

최근 다양한 센서들이 일상생활에 활용되어, 일정한 환경에서 사람의 행동을 분류하고 인식하기 위한 연구들이 활발하게 진행되고 있다. 본 연구에서는 2개의 진동센서 값과 1개의 적외선 센서 값을 은닉 마코프 모델에 적용하여 침대 위에 있는 사람의 3가지 행동유형-눕기, 뒤척임, 일어나기-을 분류하고자 한다. 3개 센서 값의 특징들을 기초로 은닉 마코프 모델에 학습시키고, 특징집합과 학습 데이터량을 변화시키면서 사람의 행동유형에 대한 인식 실험을 수행하였다. 특징 개수 혼합에 따른 인식률의 차이는 거의 없는 것으로 나타났으나, 학습 데이터량을 증가시켜 가면서 수행한 실험에서는 인식률이 평균 78.127%로 향상되는 성과를 거두었다.

• The Plant Pathology Journal
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• v.22 no.3
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• pp.295-302
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• 2006

The present study addressed the efficacy of nanosized silica-silver for controlling plant pathogenic microorganisms. The nanosized silica-silver consisted of nano-silver combined with silica molecules and water soluble polymer, prepared by exposing a solution including silver salt, silicate and water soluble polymer to radioactive rays. The nanosized silica-silver showed antifungal activity against the tested phytopathogenic fungi at 3.0 ppm with varied degrees. In contrast, a number of beneficial bacteria or plant pathogenic bacteria were not significantly affected at 10 ppm level but completely inhibited by 100 ppm of nanosized silicasilver. Among the tested plant pathogenic fungi, the new product effectively controlled powdery mildews of pumpkin at 0.3 ppm in both field and greenhouse tests. The pathogens disappeared from the infected leaves 3 days after spray and the plants remained healthy thereafter. Our results suggested that the product developed in this study was effective in controlling various plant fungal diseases.

• Proceedings of the Optical Society of Korea Conference
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• 2002.07a
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• pp.16-17
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• 2002

최근 3-준위 원자계에서 원자 결맞음에 관련된 현상에 대해 많은 연구가 이루어지고 있다. 전자기 유도 투과, 전자기 유도 흡수, 밀도 반전 없는 레이저 발진, 선폭이 좁은 공진에 의한 큰 굴절률의 실현, 저광속, 초광속, 초저온 원자 냉각 현상들은 원자 결맞음과 관련된 현상들이다. 3준위 원자계는 계단형, V 형, ∧ 형으로 분류할 수 있는데, ∧ 형의 3준위 원자계는 바닥상태간의 간섭성이 오래 지속될 수 있으므로 ∧ 형의 3준위 원자계가 실질적으로 많이 연구되고 있다. (중략)

• The KSFM Journal of Fluid Machinery
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• v.2 no.3 s.4
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• pp.59-66
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• 1999

In this study the effects of nozzle diameter on the performance characteristics for the tangential impeller-type water meter are studied experimentally. The nozzle is cut along the tangential direction of the inner case in the water meter. The nozzle shape is round and the number of nozzles used for the experimental study are 8. The performance characteristics are discussed for various nozzle diameters such as 3.1, 3.3, 3.5, 4.0, 4.5 and 5.0 mm. Among the tangential impeller-type water meters, the water meter with the nozzle diameter of 5.0 mm shows the least pressure loss and the instrumental error compared to the Korean Standards.