• Journal of Animal Science and Technology
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• 제63권2호
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• pp.461-464
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• 2021

Escherichia coli normally colonizes the lower intestine of animals and humans, but some serotypes are foodborne pathogens. The Escherichia coli K_EC180 was isolated from swine feces that were collected from a weaner pig. In this genome announcement, E. coli K_EC180 was sequenced using PacBio RS II and Illumina NextSeq 500 platforms. The complete chromosome of E. coli K_EC180 is composed of one circular chromosome (5,017,281 bp) with 50.4% of guanine + cytosine (G + C) content, 4,935 of coding sequence (CDS), 88 of tRNA, and 22 of rRNA genes. The complete genome of E. coli K_EC180 contains the toxin genes such as shiga-like toxins (stxA and stxB).

• 한국전자통신학회논문지
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• 제17권6호
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• pp.1229-1236
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• 2022

본 논문에서는 고속도로에서 주행시 2차 사고를 방지하기 위한 사고인식 스마트 가로등에 대해 연구하였다. 가로등에 아두이노 및 센서를 활용하여 운전자에게 기상 상태를 알리고, 햇빛 및 야간 주행 차량에 따른 LED 밝기 조절과 같은 기능을 삽입하였고, 라즈베리파이 카메라 OpenCV를 활용해 텐서플로우 라이트 프로그램을 이용하여 각종 교통사고, 자연재해 및 야생동물 출현을 Deep Learning을 한 후 그 장면들을 인식하여 고속도로에서 일어날 수 있는 사고들을 감지하여 운전자에게 알려주며 각종 2차 사고를 예방하는 것을 보였다.

• 한국음향학회지
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• 제41권2호
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• pp.115-121
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• 2022

본 논문에서는 음악 청취 시에 나타나는 뇌파 특징을 이용하여 사용자 감정에 따른 음악 분류 시스템을 제안한다. 제안된 시스템에서는 뇌파 신호로부터 추출한 감정별 뇌파 특징과 음악신호에서 추출한 청각적 특징 간의 관계를 회귀 심층신경망을 통해 학습한다. 실제 적용 시에는 이러한 회귀모델을 기반으로 제안된 시스템은 입력되는 음악의 청각 특성에 매핑된 뇌파 신호 특징을 자동으로 생성하고, 이 특징을 주의집중 기반의 심층신경망에 적용함으로써 음악을 자동으로 분류한다. 실험결과는 제안된 자동 음악분류 프레임 워크의 음악 분류 정확도를 제시한다.

• Journal of Animal Science and Technology
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• 제65권3호
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• pp.679-682
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• 2023

The Lactococcus taiwanensis strain K_LL004 was isolated from the gut of a grasshopper (Oxya chinensis sinuosa) collected from local farm in Korea. L. taiwanensis strain K_LL004 is the functional probiotic candidate with an ability to hydrolyse plant polysaccharides. The complete genome of the L. taiwanensis strain K_LL004 contains one circular chromosome (1,995,099 bp) with a guanine + cytosine (GC) content of 38.8%. Moreover, 1,929 Protein-coding sequence, 19 rRNA genes, and 62 tRNA genes were identified based on results of annotation. L. taiwanensis strain K_LL004 has a gene, which encodes hydrolytic enzymes such as beta-glucosidase and beta-xylosidase, that hydrolyzes plant polysaccharides.

• 유통과학연구
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• 제5권2호
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• pp.5-16
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• 2007

본 연구의 목적은 소매업태 용어 통일화에 대해 알아보는 것이다. 이를 통해 소매 비즈니스 영역의 용어에 대한 혼란을 방지하고자 하였다. 또한 국내 소매업태의 적절하도록 용어정의에 대한 정리를 하고자 한다. 본 연구는 한국유통과학회 산하 유통학정의위원회 책임 하에 이루어졌다. 용어들은 백화점, 슈퍼마켓, 전문점, 편의점, 드럭스토어, 무점포 소매, 할인점, 쇼핑센터, 상점가, 시장과 함께 정의하였다.

• Tuberculosis and Respiratory Diseases
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• 제66권5호
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• pp.370-373
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• 2009

폐동맥 색전증은 적절한 치료를 하지 않으면 사망률이 30%에 이르는 치명적인 질환이다. 장기간의 부동 상태, 수술, 악성 종양 등이 흔한 위험 인자이나, 크론병과 같은 염증성 장질환 또한 드물지만 폐동맥 혈전증을 일으킨다고 알려져 있다. 저자들은 3년 전 혈변과 설사로 크론병을 진단받고 재발 및 관해를 반복하던 25세 남자에서 폐동맥 색전증이 병발한 드문 예를 경험하였기에 증례 보고를 하는 바이다.

• ALGAE
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• 제31권3호
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• pp.243-256
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• 2016

Concerns about how ocean acidification will impact marine organisms have steadily increased in recent years, but there is a lack of knowledge on the responses of macroalgae. Here, we adopt an outdoor continuous-flowing mesocosm system designed for ocean acidification experiment that allows high CO₂ conditions to vary with natural fluctuations in the environment. Following the establishment of the mesocosm, five species of macroalgae that are common along the coast of Korea (namely Ulva pertusa, Codium fragile, Sargassum thunbergii, S. horneri, and Prionitis cornea) were exposed to three different CO₂ concentrations: ambient (×1) and elevated CO₂ (2× and 4× ambient), over two-week period, and their ecophysiological traits were measured. Results indicated that both photosynthesis and growth exhibited species-specific responses to the different CO₂ concentrations. Most notably, photosynthesis and growth increased in S. thunbergii when exposed to elevated CO₂ conditions but decreased in P. cornea. The preference for different inorganic carbon species (CO₂ and HCO₃⁻), which were estimated by gross photosynthesis in the presence and absence of the external carbonic anhydrase (eCA) inhibitor acetazolamide, were also found to vary among species and CO₂ treatments. Specifically, the two Sargassum species exhibited decreased eCA inhibition of photosynthesis with increased growth when exposed to high CO₂ conditions. In contrast, growth of U. pertusa and C. fragile were not notably affected by increased CO₂. Together, these results suggest that the five species of macroalgae may respond differently to changes in ocean acidity, with species-specific responses based on their differentiated photosynthetic acclimation. Understanding these physiological changes might allow us to better predict future changes in macroalgal communities in a more acidic ocean.

• 디지털융복합연구
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• 제18권7호
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• pp.215-222
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• 2020

본 연구의 목적은 리듬 산출 시 수행 정확도를 정밀하게 수집, 저장하기 위한 모바일 어플리케이션 'Beat Processing Device(이하 BPD)' 개발에 있다. 이를 위하여 총 3단계의 개발 과정을 거쳤다. 1단계에서는 문헌 조사를 통해 기존 노인 인지 기능 훈련을 위해 사용된 리듬꼴들을 수집, 비교, 분석함으로써, 리듬 산출 과제 구성에 필요한 4개의 리듬꼴 문항을 확정하였다. 2단계에서는 확정한 4개의 리듬꼴 문항이 탑재된 iOS 기반 모바일 어플리케이션을 개발하였으며, 예비 테스트를 통해 디바이스 종류, 사용할 악기 음색, 구현할 실험 종류 등을 최적화하였다. 마지막 단계인 3단계에서는 노인 60명을 대상으로 본 기기와 미디(MIDI)로 수집한 리듬 산출 데이터를 비교하여, BPD의 실효성과 타당성, 정밀함을 검증하였다. 본 연구에서 개발된 BPD는 인지기능 강화를 위한 리듬 수행력 증진을 평가할 수 있는 유용한 도구로 다양한 현장에서 활용될 수 있을 것으로 기대된다.

• ALGAE
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• 제28권2호
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• pp.173-183
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• 2013

Sodium hypochlorite (NaOCl) is widely used to disinfect seawater in power plant cooling systems in order to reduce biofouling, and in ballast water treatment systems to prevent transport of exotic marine species. While the toxicity of NaOCl is expected to increase by ongoing ocean acidification, and many experimental studies have shown how algal calcification, photosynthesis and growth respond to ocean acidification, no studies have investigated the relationship between NaOCl toxicity and increased $CO_2$. Therefore, we investigated whether the impacts of NaOCl on survival, chlorophyll a (Chl-a), and effective quantum yield in three marine phytoplankton belonging to different taxonomic classes are increased under high $CO_2$ levels. Our results show that all biological parameters of the three species decreased under increasing NaOCl concentration, but increasing $CO_2$ concentration alone (from 450 to 715 ${\mu}atm$) had no effect on any of these parameters in the organisms. However, due to the synergistic effects between NaOCl and $CO_2$, the survival and Chl-a content in two of the species, Thalassiosira eccentrica and Heterosigma akashiwo, were significantly reduced under high $CO_2$ when NaOCl was also elevated. The results show that combined exposure to high $CO_2$ and NaOCl results in increasing toxicity of NaOCl in some marine phytoplankton. Consequently, greater caution with use of NaOCl will be required, as its use is widespread in coastal waters.

• Journal of Plant Biotechnology
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• 제46권3호
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• pp.217-227
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• 2019

Production of therapeutic monoclonal antibodies (mAbs) using a plant platform has been considered an alternative to the mammalian cell-based production system. A plant-derived mAb CO17-1AK ($mAb^P$ COK) can specifically bind to various types of cancer cell lines. The target protein of $mAb^P$ COK is the epithelial cell adhesion molecule (EpCAM) highly expressed in human epithelial cancer cells, including breast and colorectal cancer cells. It has been hypothesized that its overexpression supports tumor growth and metastasis. A ganglioside is extended well beyond the surfaces of the various cell membranes and has roles in cell growth, inflammation, differentiation, and carcinogenesis. However, the regulation of EpCAM gene expression in breast cancers and the role of gangliosides in oncogenesis are unclear. Here, the purpose of this study was to determine the effects of $mAb^P$ COK on human breast cancer cell proliferation, apoptosis, and ganglioside expression patterns. Our results show that treatment with $mAb^P$ COK suppressed the growth of breast cancer cells and induced apoptotic cell death. It also upregulated the expression of metastasis-related gangliosides in breast cancer cells. Thus, treatment with $mAb^P$ COK may have chemo-preventive therapeutic effects against human breast cancer.