• 미생물학회지
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• 제42권4호
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• pp.271-276
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• 2006

이전의 연구 결과 어류 rhabdovirus에 감염된 세포에서 virus-inducible stress protein (VISP)의 발현이 증가함을 확인하였다. 본 연구에서는 VISP의 세포내 위치를 확인하였으며, 또한 세포내 위치 결정에 중요한 역할을 담당하는 VISP의 부위를 확인하였다. 먼저 endogenous VISP의 세포내 위치를 확인하기 위하여 CHSE-214 세포를 VISP에 대한 단클론항체를 사용하여 염색한 후 confocal microscope로 관찰하였다. 그 결과 VISP가 세포의 핵 주변에 점구조를 형성함이 확인되었다. 이를 확인하기 위하여 VISP에 enhanced green fluorescent protein (EGFP)이 붙은 fusion gene을 발현하는 plasmid를 제조하였다. EGFP-VISP를 발현하는 plasmid 벡터를 세포에 transfection 시킨 후 confocal microscope로 관찰한 결과 핵 주변에 점구조를 형성함이 확인되었다. VISP의 아미노산서열 중 핵 주변의 점구조 형성에 관여하는 부분을 확인하기 위하여 VISP의 다양한 deletion mutant들을 제조하였다. 이 mutant를 사용한 transfection 실험 결과 VISP의 C-terminal 부위(aa 612-710)가 핵주변의 점구조 형성에 중요한 역할을 담당함이 확인되었으며, 이 부분의 functional motif 분석결과 691-TLTSLLL-697 부위에 nuclear receptor binding motif가 존재함이 확인되었다. 이와 같은 결과들을 종합하면, VISP는 핵 주변에 존재하며 VISP의 C-terminal부위가 혀 주위 분포에 중요한 역할을 담당함을 알 수 있었다. 이후의 연구로부터 VISP의 핵 주위 분포가 IHNV의 성장에 미치는 영향이 확인되면 IHNV 병원성의 새로운 기작을 밝혀내는 중요한 자료가 될 것이다.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2007년도 한국컴퓨터종합학술대회논문집 Vol.34 No.1 (C)
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• pp.477-481
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• 2007

A background is a part where do not vary too much or frequently change in an image sequence. Using this assumption, it is presented a background acquisition algorithm for not only static but also dynamic view in this paper. For generating background, we detect a region, where has high correlation rate compared within selected region in the prior pyramid image, from the searching region in the current image. Between a detected region in the current image and a selected region in the prior image, we calculate movement vector for each regions in time sequence. After we calculate whole movement vectors for two successive images, vector histogram is used to determine the camera movement. The vector which has the highest density in the histogram is determined a camera movement. Using determined camera movement, we classify clusters based on pixel intensities which pixels are matched with prior pixels following camera movement. Finally we eliminate clusters which have lower weight than threshold, and combine remained clusters for each pixel to generate multiple background clusters. Experimental results show that we can automatically detect background whether camera move or not.

• Transactions on Electrical and Electronic Materials
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• 제15권4호
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• pp.198-200
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• 2014

100 nm thick Ga doped ZnO (GZO) thin films were deposited with RF magnetron sputtering on polyethylene terephthalate (PET) and ZnO coated PET substrate and then the effect of the ZnO thickness on the optical and electrical properties of the GZO films was investigated. GZO single layer films had an optical transmittance of 83.7% in the visible wavelength region and a sheet resistance of $2.41{\Omega}/{\square}$, while the optical and electrical properties of the GZO/ZnO bi-layered films were influenced by the thickness of the ZnO buffer layer. GZO films with a 20 nm thick ZnO buffer layer showed a lower sheet resistance of $1.45{\Omega}/{\square}$ and an optical transmittance of 85.9%. As the thickness of ZnO buffer layer in GZO/ZnO bi-layered films increased, both the conductivity and optical transmittance in the visible wavelength region were increased. Based on the figure of merit (FOM), it can be concluded that the ZnO buffer layer effectively increases the optical and electrical performance of GZO films as a transparent and conducting electrode without intentional substrate heating or a post deposition annealing process.

• 한국의학물리학회:학술대회논문집
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• 한국의학물리학회 2002년도 Proceedings
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• pp.138-140
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• 2002

The spinal cord dose is the one of the limiting factor for the radiation treatment of the head & neck (H&N) or the thorax region. Due to the fact that the cord is the elongated shaped structure, it is not an easy task to maintain the cord dose within the clinically acceptable dose range. To overcome this problem, the spinal cord partial block technique (PBT) with the dynamic Multi-Leaf Collimator (dMLC) has been developed. Three dimension (3D) conformal beam directions, which minimize the coverage of the normal organs such as the lung and the parotid gland, were chosen. The PBT field shape for each field was designed to shield the spinal cord with the dMLC. The transmission factors were determined by the forward calculation method. The plan comparisons between the conventional 3D conformal therapy plan and the PTB plan were performed to evaluate the validity of this technique. The conformity index (CI) and the dose volume histogram (DVH) were used as the plan comparison indices. A series of quality assurance (QA) was performed to guarantee the reliable treatment. The QA consisted of the film dosimetry for the verification of the dose distribution and the point measurements. The PBT plan always generated better results than the conventional 3D conformal plan. The PBT was proved to be useful for the H&N and thorax region.

• 가정과삶의질연구
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• 제22권6호
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• pp.75-87
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• 2004

The purpose of this study is to analyze some related factors affecting consumer values and compulsive buying and to investigate the relationship between consumer value types and compulsive buying behavior. Data were collected from 481 college students at Seoul and Ulsan in Korea and at Nagasaki in Japan. The results indicated that consumer value types were differentiated by the age and the region(Ulsan, Seoul, and Nagasaki) and compulsive buying was differentiated by the region. Among the 8 sub-dimensions of consumer values, the college students in Ulsan showed a relatively high level of humanism familism and authoritarianism while those in Seoul showed a relatively high level of materialism and futurism The college students in Nagasaki showed a relatively high level of hedonism For the compulsive buying behavior, the college students in Seoul have the highest level, Nagasaki the middle level, and Ulsan the lowest level of compulsive buying. And four types of consumer values are identified: 'Satisfied-in-Present'; 'Pursuing-Power- Oriented-Value'; 'Pursuing-Current-Satisfaction', and 'Pursing-Future'. It was found that college student in Seoul, Usa and Nagasaki were classified into different types. The college students in Seoul were classified to , Usu in , and Nagasaki to . For the relationship between four types of consumer values and compulsive buying, showed the highest level, and the middle level, and the lowest level of compulsive buying.

• 한국분말재료학회지
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• 제19권1호
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• pp.55-59
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• 2012

In this work, the silver nanoparticles have been synthesized by electrical explosion of wire in three liquid mediums: deionized water (DIW), polyvinylpyrrolidone (PVP) and sodium dodecyl benzene sulfonate (SDBS) solutions. Absorption in the UV-visible region of these suspensions was measured in the range of 300-800 nm. A surface plasmon peak was observed at ~400 nm in all suspensions in measured wavelength range. Particle size was analyzed by transmission electron microscope. It showed that the particles had nearly spherical shape in all samples. The average particle sizes prepared in DIW, PVP and SDBS solution were 37, 31 and 27 nm, respectively. Stability of the suspensions was estimated by multiple light scattering method. The presence of PVP and SDBS surfactants in the exploding medium resulted in enhanced stability of the silver suspensions.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제35권6호
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• pp.494-498
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• 2009

Schwannomas are tumors which originate from the neuroectodermal Schwann cell of cranial, intraspinal, peripheral and autonomic nerve sheaths, and they are solitary, benign, slow growing and well encapsulated neoplasm. Schwannomas are usually asymptomatic. No strong gender or age predominance exists. The incidence of extracranial schwannomas in the head and the neck region varies from 25~45%. In addition, schwannomas are rare in the maxillary sinus or buccal space. In this paper, it diagnosed and treated a 54-years old female patient, who had schwannoma in the maxillary sinus derived from infraorbital nerves, the branch of the left trigeminal nerve, and a 19-years old male patient, who had schwannoma arose in the buccal space derived from the buccal branch of the right facial nerve. There was no particular complication except sensory extinction of the nerve in the female patient and paralysis by the nerve in the male patient. It is determined those two cases of schwannoma in the rare portion is valuable and herein, it reports those with literature discussions.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제37권3호
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• pp.234-236
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• 2011

Traditional surgery to remove foreign bodies in the face carries a risk of postoperative morbidity with an injury to various anatomical structures, particularly the facial nerve and parotid duct and gland. Endoscopy can be a great aid in the removal of foreign bodies in the maxillofacial region. Surgical intervention using endoscope and/,or intraoperative images can be minimized, allowing the safe and precise removal of foreign bodies, and saving operating time. We report a case of the use of an endoscope and C-arm fluoroscopy guidance system to remove a very small foreign body.

• 한국재료학회지
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• 제31권3호
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• pp.139-149
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• 2021

In this study, three kinds of bainitic steels are fabricated by controlling the contents of vanadium and boron. High vanadium steel has a lot of carbides and nitrides, and so, during the cooling process, acicular ferrite is well formed. Carbides and nitrides develop fine grains by inhibiting grain growth. As a result, the low temperature Charpy absorbed energy of high vanadium steel is higher than that of low vanadium steel. In boron added steel, boron segregates at the prior austenite grain boundary, so that acicular ferrite formation occurs well during the cooling process. However, the granular bainite packet size of the boron added steel is larger than that of high vanadium steel because boron cannot effectively suppress grain growth. Therefore, the low temperature Charpy absorbed energy of the boron added steel is lower than that of the low vanadium steel. HAZ (heat affected zone) microstructure formation affects not only vanadium and boron but also the prior austenite grain size. In the HAZ specimen having large prior austenite grain size, acicular ferrite is formed inside the austenite, and granular bainite, bainitic ferrite, and martensite are also formed in a complex, resulting in a mixed acicular ferrite region with a high volume fraction. On the other hand, in the HAZ specimen having small prior austenite grain size, the volume fraction of the mixed acicular ferrite region is low because granular bainite and bainitic ferrite are coarse due to the large number of prior austenite grain boundaries.

• The Journal of Korean Physical Therapy
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• 제35권6호
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• pp.163-166
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• 2023

A 30-year-old male novice golfer was diagnosed with a clay-shoveler's fracture. During golf practice, he experienced persistent posterior neck and upper back pain for a month. Cervical radiographs and computed tomography revealed a series of sequential spinous process fractures from C7 to T3. The patient was prescribed analgesic medication and fitted with a cervical brace alongside extracorporeal shockwave therapy (ESWT) directed explicitly toward the upper back region, subsequently leading to a notable reduction in pain. Therefore, ESWT could be considered an additional method for pain management in patients with clay-shoveler's fractures.