• 해양환경안전학회지
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• 제20권2호
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• pp.172-178
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• 2014

본 연구에서는 울산항 E 집단정박지를 이용하는 대표적인 8척의 선박에 대한 단묘박 상태에서의 묘박안전성을 앵커와 앵커체인의 파주력과 바람, 파랑 및 조류에 따른 외력으로 상호 비교하여 평가하고, 주묘 발생이 가능한 최소 한계 외력을 분석하고자한다. 파주력은 해저저질과 실제 앵커 의장수를 반영했고, 선체에 작용하는 외력은 만재와 경하상태별로 풍압면적과 수면하부 침하면적을 조사하여 각 상태별로 선체에 작용하는 풍압력, 유압력 및 파랑 표류력을 산출하였다. 단묘박 상태에서의 주묘 한계 외력에 대한 분석 결과 선박의 종류, 규모 및 적재 상태별로 다소 차이는 있으나 조류 2 knots 조건 하에서 일반화물선은 풍속 15 m/s 이상, 유류운반선은 풍속 13 m/s 이상이면 주묘가 발생할 수 있음이 확인되었다.

• 감성과학
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• 제25권4호
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• pp.77-94
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• 2022

Social interactions often involve encountering inconsistent information about social others. We conducted a functional magnetic resonance imaging (fMRI) study to comprehensively investigate voxel-wise temporal dynamics showing how impressions are anchored and/or adjusted in response to inconsistent social information. The participants performed a social impression task inside an fMRI scanner in which they were shown a male face, together with a series of four adjectives that described the depicted person's personality traits, successively presented beneath the image of the face. Participants were asked to rate their impressions of the person at the end of each trial on a scale of 1 to 8 (where 1 is most negative and 8 is most positive). We established two hypothetical models that represented two temporal patterns of voxel activity: Model 1 featured decreasing patterns of activity towards the end of each trial, anchoring impressions to initially presented information, and Model 2 showed increasing patterns of activity toward the end of each trial, where impressions were being adjusted using new and inconsistent information. Our data-driven model fitting analyses showed that the temporal activity patterns of voxels within the ventral anterior cingulate cortex, medial orbitofrontal cortex, posterior cingulate cortex, amygdala, and fusiform gyrus fit Model 1 (i.e., they were more involved in anchoring first impressions) better than they did Model 2 (i.e., showing impression adjustment). Conversely, voxel-wise neural activity within dorsal ACC and lateral OFC fit Model 2 better than it did Model 1, as it was more likely to be involved in processing new, inconsistent information and adjusting impressions in response. Our novel approach to model fitting analysis replicated previous impression-related neuroscientific findings, furthering the understanding of neural and temporal dynamics of impression processing, particularly with reference to functionally segmenting each region of interest based on relative involvement in impression anchoring as opposed to adjustment.

• Journal of Microbiology and Biotechnology
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• 제15권1호
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• pp.141-146
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• 2005

A new system for displaying proteins on the surface of Escherichia coli was developed using the Salmonella typhimurium outer membrane protein C (OmpC) as an anchoring motif. The C-terminal deletionfusion strategy was developed to fuse the polyhistidine peptides and green fluorescent protein (GFP) to the Cterminal of the truncated functional portion of OmpC. The polyhistidine peptides of up to 243 amino acids could besuccessfully displayed on the E. coli cell surface, which allowed recombinant E. coli to adsorb up to 34.2 μmol of Cd2+ per gram dry cell weight. The GFP could also be successfully displayed on the E. coli cell surface. These results suggest that the C-terminal deletion-fusion strategy employing the S. typhimurium OmpC as an anchoring motif provides a new efficient way for the display of large proteins on the surface of E. coli.

• 한국산림과학회지
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• 제95권4호
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• pp.495-500
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• 2006

자주식 반송기를 이용한 가선집재작업의 안정성을 이론적인 계산과 현장 계측을 통해 검토하였다. 가선집재 시스템의 이론적 안정성 평가의 유용성을 입증하기 위하여 스카이라인의 장력과 근주의 저항력을 측정하여 이론 계산값과 비교평가하였다. 그 결과 측정된 스카이라인의 장력과 계산값이 유사하였으며, 이를 통해 전체적인 안정성 검토가 가능하였다. 또한 근주의 저항력은 근주의 직경과 밀접한 관계가 있으며 근주변의 각도가 $5-10^{\circ}$일 때 가장 큰 저항력을 나타내었으며, 그 이상의 각도에서는 지주목으로서의 기능을 잃어버리는 것으로 판단되었다.

• Korean Chemical Engineering Research
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• 제58권2호
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• pp.280-285
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• 2020

We have developed a constitutive display system of the Pseudomonas fluorescens SIK W1 TliA lipase on the cell surface of Escherichia coli using E. coli outer membrane protein C (OmpC) as an anchoring motif, which is an economical compared to induced system. For the constitutive expression of truncated OmpC-TliA fusion proteins, gntT104 promoter was employed. Cell growth was not affected by over expression of fusion protein during entire culture time, suggesting cell lysis was not a problem. The localization of truncated OmpC-TliA fusion protein on the cell surface was confirmed by immunofluorescence microscopy and measuring whole cell lipase activity. Constitutively displayed lipase was very stable, retaining activity enantioselectivity throughout the five repeated reactions. These results suggest that OmpC from E. coli be a useful anchoring motif for displaying enzymes on the cell surface without any inducers, and this stable surface display system can be employed for a broad range of biotechnological applications.

• Bulletin of the Korean Chemical Society
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• 제28권6호
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• pp.953-958
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• 2007

Anchoring quantum dots (QDs) onto thermodynamically stable, large band gap oxide semiconductors is a very important strategy to enhance their quantum yields for solar energy conversion in both visible and near-IR regions. We describe a general procedure for anchoring a few chalcogenide QDs onto the titanium oxide layer. To anchor the colloidal QDs onto a mesoporous TiO2 layer, linker molecules containing both carboxylate and thiol functional groups were initially attached to TiO2 layers and subsequently used to capture dispersed QDs with the thiol group. Employing the procedure, we exploited cadmium selenide (CdSe) and cadmium telluride (CdTe) quantum dots (QDs) as inorganic sensitizers for a large band gap TiO2 layer of dye-sensitized solar cells (DSSCs). Their attachment was confirmed by naked eyes, absorption spectra, and photovoltaic effects. A few QD-TiO2 systems thus obtained have been characterized for photoelectrochemical solar energy conversion.

• Genomics & Informatics
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• 제8권2호
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• pp.90-93
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• 2010

A-kinase-anchoring proteins (AKAPs) are scaffold proteins which compartmentalize protein kinase A (PKA, cAMP-dependent protein kinase) and other enzymes to specific subcellular sites. The spatiotemporal control of these enzymes by AKAPs is important for cellular function like cell growth and development etc. Hence, it is important to understand the basic function of AKAPs and their functional domains. However, diverse names, function, cellular localizations and many members of AKAPs increase difficulties when researchers search appropriate AKAPs for their experimental purpose. Nevertheless, there was no previous AKAPs-related database regardless of their important cellular functions and difficulty of finding appropriate AKAPs. So, we developed AKAPs database (AKAPDB), which contains their sequence information, functions and other information derived from prediction programs and other databases. Therefore, we propose that AKAPDB can be an important tool to researchers in the related fields. AKAPDB is available via the internet at http://plaza3.snu.ac.kr/akapdb/.

• 한국수소및신에너지학회논문집
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• 제33권1호
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• pp.105-112
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• 2022

Copper (Cu)-based catalysts have been widely used in a methanol steam reforming (MSR) reaction for hydrogen production for air-independent propulsion (AIP) applications and their good catalytic activities have attracted much attention. However, the agglomeration of the catalytic active site Cu causes deteriorating the catalytic performance and suppression of Cu agglomeration is a crucial issue in the AIP applications that the MSR system is typically operated at 250-300℃ for a long time. R. Sakai et al. recently showed a computational study on the anchoring effect that reduces an agglomeration of active sites by doping in a supporter. In order to present the anchoring effect on 𝛾-Al₂O₃ supported Cu-based catalysts, in this study, the adsorption energies of Cu on X-doped (X=ruthenium, phosphorus, silicon) 𝛾-Al₂O₃ were calculated and Cu adsorption energy decreased due to a change of the electronic structure originated from doping, thereby proving the anchoring effect.

• 대한치과교정학회지
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• 제26권4호
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• pp.341-348
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• 1996

저자는 마찰견인법으로 상악견치 후방견인시 저항원상실을 최소화하기 위해 근심 경사된 구치를 직립시키는 Molar Uprighting Spring의 작용기전을 응용하고 마찰견인법의 장점을 이용하여 임상적으로 사용이 용이하며 저항원상실이나 견치의 조절되지 못한 경사이동(uncontrolled tipping)등의 부작용을 최소화 할 수 있는 장치인 Molar Anchoring Spring(MAS)을 고안하였다. MAS를 임상에 적용한 결과 비교적 만족스러운 결과를 얻어 이에 장치를 소개하며 MAS의 저항원 조절능력과 견치의 이동양상을 평가하기 위하여 광탄성 모형을 제작한 후 주호선에 diameter 0.009" lumen size 0.030" NiTi closed coil spring만을 장착하여 250gm의 견인력이 발생하도록 한 경우와, 같은 NiTi closed coil spring으로 동일한 견인력 이 발생하도록 하고 .017" X .025" TMA wire로 $60^{\circ}$의 tip-back bend를 부여하여 수직교정력이 60-70gm이 되도록 제작한 MAS를 제1대구치 auxiliary tube에 삽입하고 견치 전방에 걸어준 경우를 비교실험 하여 견치견인시 초기응력분포를 관찰한 결과 다음과 같은 결과를 얻었다. 1. 주호선(main arch wire)에 저항원 조절을 위한 조치없이 견치에 수평견인력만을 가했을 때 구치부에 심한 저항원상실은 물론 견치의 원심이동양상도 조절되지 못한 경사이동(uncontrolled tipping)으로 나타났다. 2. 구치부의 저항원 조절을 위해 사용한 MAS는 견치의 원심이동 초기에 구치부 저항원 조절효과와 견치의 정출없는 조절된 경사이동(controlled tipping)을 유도할 수 있는 장치로 나타났다.

• 콘크리트학회지
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• 제19권4호
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• pp.41-44
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• 2007