• 한국진공학회:학술대회논문집
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• 한국진공학회 2012년도 제43회 하계 정기 학술대회 초록집
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• pp.107-107
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• 2012

Recently, large-area synthesis of high-quality but polycrystalline graphene has been advanced as a scalable route to applications including electronic devices. The presence of grain boundaries (GBs) may be detrimental on some electronic, thermal, and mechanical properties of graphene, including reduced electronic mobility, lower thermal conductivity, and reduced ultimate mechanical strength, yet on the other hand, GBs might be beneficially exploited via controlled GB engineering. The study of graphene grains and their boundary is therefore critical for a complete understanding of this interesting material and for enabling diverse applications. I present that scanning electron diffraction in STEM mode makes possible fast and direct identification of GBs. We also demonstrate that dark field TEM imaging techniques allow facile GB imaging for high-angle tilt GBs in graphene. GB mapping is systematically carried out on large-area graphene samples via these complementary techniques. The study of the detailed atomic structure at a GB in suspended graphene uses aberration-corrected atomic resolution TEM at a low kV.

• 한국정보교육학회:학술대회논문집
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• 한국정보교육학회 2007년도 하계학술대회
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• pp.240-245
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• 2007

하루가 다르게 우리 사회의 모습은 정보화, 디지털화 되어 가고 있다. 이러한 시대적 흐름에 맞추어 정보통신기술교육에 대한 관심과 중요성이 커지고 있으며, 단순히 기능을 가르치는 교육에서 문제해결력을 기르는 방향으로 변하고 있다. 이러한 정보통신기술교육의 변화를 반영하기 위해서는 보다 다양하고 체계적인 교수 학습 모형에 대한 연구가 필요하다. 이에 본 연구에서는 구성주의 교육방법론의 하나로 학습자에게 행함에 의한 학습(learning-by-doing)이 이루어지는 모의 상황을 통해 학습 목표를 달성할 수 있도록 하는 목표기반 시나리오학습(Goal-Based Scenario : GBS) 이론을 초등학교 정보통신기술교육에서 활용할 수 있는 교수 학습 모형을 제안하고자 한다. 즉, 교육현장에서 초등학교 학생들에게 적용할 GBS 교수 학습 모형에 대한 연구로 체계적인 정보통신기술교육의 정착에 도움이 되고자 하는데 의의를 둔다.

• Annals of Clinical Neurophysiology
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• 제10권1호
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• pp.70-73
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• 2008

By definition, the time to reach nadir in Guillain-Barre syndrome (GBS) is within four weeks. This is in contrast to the chronic inflammatory demyelinating polyradiculoneuropathy (CIDP), which progress for at least two months. However, CIDP can take a relapsing and remitting form and could mimic treatment related fluctuations of GBS (GBS-TRFs) especially during the early phase of disease. We report a patient with CIDP who initially presented with a rapidly progressive limb weakness mimicking GBS, but finally showed good recovery after long term corticosteroid therapy.

• Annals of Clinical Neurophysiology
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• 제7권1호
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• pp.25-27
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• 2005

The Guillain-Barre syndrome (GBS) is an acute polyradiculoneuropathy marked by flaccid areflexic paralysis. Although the pathogenesis of GBS remains incompletely defined, considered as an autoimmune disease most frequently triggered by an previous infection. Antecedent infections with Campylobacter jejuni, cytomegalovirus, Ebstein-Barr virus, Mycoplasma pneumoniae, Haemophilus influenzae, human immunodeficiency virus, enterovirus, rotavirus are common. But, it is rare that GBS following typhoid fever. We present a case of typical GBS after antecedent Salmonella typhi infection.

• Advances in concrete construction
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• 제6권6호
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• pp.611-629
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• 2018

The objective of present study is to investigate the effect of granulated blast furnace slag (GBS) as partial substitution of natural sand on behaviour of cement mortar. For this, the methods of factorial design with water cement (w/c) ratio and incorporation percentages of GBS as replacement of natural fine aggregate i.e., GBS(%) as factors are followed. The levels of factor w/c ratio are fixed at 0.4, 0.45, and 0.5 and the levels of factor GBS(%) are kept fixed as 0%, 20%, 40%, 60%, 80% and 100%. The compressive strength (CS) of mortar after 3, 7, 14, 28, 56 and 90 days, and water absorption (WA) are chosen as responses of the study. Analysis of variance (ANOVA) of experimental results has been carried out and those are illustrated by ANOVA tables, main effect and interaction plots. The results of study depict that the selected factors have substantial influence on the strength and WA of mortar. However, the interaction of factors has no substantial impact on CS and WA of mixes.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.637-638
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• 2015

There has been growing interests in life-cycle project management in the construction industry. A lot of attention is given to Building Information Modeling (BIM) which stores and uses a variety of construction information for the life cycle of project management. However, due to the additional workload arising from BIM, its expected effects versus its input costs are still under discussion in practice. As an attempt to address this issue, one of previous studies suggested an automated linking process by developing Standard Classification Numbering System (SCNS) and Geometry Breakdown Structure (GBS) to enhance the efficiency of integration process of BIM objects, cost, and schedule. Though SCNS and GBS facilitates identifying all different dataset, making object sets and linking schedule activities still needs to be manually done without having an automated tool. In this context, the purpose of this paper is to develop and validate a fully automated integration system for 3D-objects, cost, and schedule. A prototype system for single family homes (Hanok) was developed and tested in order to verify its efficiency.

• Clinical Pain
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• 제18권2호
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• pp.111-114
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• 2019

Guillain-Barre syndrome (GBS) is usually characterized by acute areflexic ascending paralysis with minimal sensory involvement. Only a few cases of GBS associated with scrub typhus have been reported. Previous case reports focused on the laboratory findings, pathogenesis, and clinical manifestation. Unlike the previous case, neuropathic pain was a prominent symptom of GBS in our case. We report scrub-typhus-related GBS with a detailed description of the clinical manifestations, especially neuropathic pain, along with results of serial follow-up electrodiagnostic studies.

• Pediatric Infection and Vaccine
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• 제23권3호
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• pp.236-239
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• 2016

길랭-바레 증후군은 약 3분의 2에서 선행 감염이 원인이 되며 면역반응 때문에 발병하는 것으로 알려져 있는데, 그 중 인플루엔자 바이러스는 비교적 드문 원인이다. 발병 기전과 관련된 항체들에 대한 보고들은 몇 차례 있었지만 길랭-바레 증후군 환자의 뇌척수액에서 인플루엔자 바이러스가 직접 검출된 증례는 없었다. 6세 여아가 내원 1주 전 인플루엔자 A로 진단된 후 oseltamivir를 복용하며 증상이 호전되었고, 내원 2일 전 두통 및 하루 전 양하지 위약감이 생겨서 응급실로 왔다. 신체 진찰, 뇌척수액 검사, 신경전도 검사, 척수 자기공명영상 등의 결과를 토대로 길랭-바래 증후군으로 진단하였고, 뇌척수액중합효소 연쇄반응 검사에서 인플루엔자 A 바이러스가 검출되었으며, 면역글로불린 정맥 투여 후 점차 증상이 호전되었다. 본 증례를 통하여 저자들은 인플루엔자 바이러스가 뇌척수액 내로 직접 침투한 것이 길랭-바레 증후군의 발생과 연관이 있을 것이라고 판단하며, 향후 그 기전에 대한 연구가 필요하겠다.

• Pediatric Infection and Vaccine
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• 제25권1호
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• pp.45-49
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• 2018

B군 사슬알균은 3개월 미만 영아에서 발생하는 침습성 감염증의 주요한 원인균이다. 신생아 침습성 B군 사슬알균 수막염에 의한 뇌혈관 합병증은 드물게 보고되고 있다. 발열을 주소로 내원한 생후 29일 신생아에서 세균성 수막염이 진단되었다. 입원 3일째 경련이 발생하였고 뇌 자기공명영상에서 다발성의 광범위한 대뇌피질(양측 전두엽, 측두엽 및 후두엽)과 뇌량 및 좌측 후두엽에서 급성 뇌경색증 합병된 소견을 보였다. 환아의 혈액과 뇌척수액에서 B군 사슬알균이 분리되었고 serotype III, ST-19으로 확인되었다. 현재 환아는 피질맹과 발달 지연을 보이고 있다.

• Journal of Acupuncture Research
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• 제39권3호
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• pp.190-201
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• 2022

This review aimed to analyze Korean medicine treatment (KMT) methods used for Guillain-Barre syndrome (GBS) in studies from January 1, 2010, to December 21, 2021. Five online databases (KISS, SCIENCEON, DBpia, RISS, KMbase) were searched for GBS-related studies. A total of 14 case reports were selected. Various treatment methods for GBS such as acupuncture, herbal medicine, moxibustion, and cupping have been reported, and some included Western medication. Herbal medicine and acupuncture were the most frequently used treatment methods. The most common prescription for GBS was Shipjeondaebotang Gami, the most common herb used was Glycyrrhizae radix et rhizome, and the most common acupoints were ST36, LI11, TE5, and LI4. In moxibustion treatment for GBS, CV4 was commonly used, and in cupping treatment the low back and back-shu points and were mostly used. Further studies on Korean medicine treatment of GBS are necessary for standardization of treatment.