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문병현,송주열,이현성,손경규,엄태환,김정우,김아름 대구대학교 정보통신연구소 2004 情報通信硏究 Vol.3 No.2
The system designed in this paper, can mark the interior state of greenhouse using sensors of temperature, humidity and illumination on greenhouse interior by greenhouse system for farm village area's agriculture automation. And, the real time monitor is possible real time monitoring by camera. Also, system that can supply water using spring cooler system and humidifier. The proposed system can sustain a designed environment of the greenhouse through rentilation fan, fluorescent light and roof door control. TCP/IP is used for the remote control of state the sensors in the client program. 본 논문에서 설계된 시스템은 농촌 지역의 농업 자동화를 위한 온실 시스템으로 온실 내부에 온도, 습도, 조도 센서를 이용한 온실 내부의 상태를 표시할 수 있으며 카메라를 이용하여 실시간 관측이 가능하다. 또한 본 시스템은 지붕 개폐, 스프링 쿨러와 가습기를 이용한 수분 공급, 환풍기, 형광등 등을 통하여 온실 내부의 환경을 유지시킬 수 있다. 모든 센서를 이용한 상태와 온실 제어를 TCP/IP를 이용한 클라이언트 프로그램에서 원격으로 관리할 수 있다.
Thermal Inactivation of Sodium-Habituated Staphylococcus aureus in Ready-to-Heat Sauces
Ah Reum Park,Jin Hee Lee,Sook Jin Jeong,In Gyun Hwang,Soon Ho Lee,Joon Il Cho,Yo Han Yoon 한국축산식품학회 2012 한국축산식품학회지 Vol.32 No.6
The objective of this study was to evaluate the effect of sodium habituation on thermal resistance of Staphylococcus aureus in various ready-to-heat (RTH) sauces. The strain mixture of S. aureus strains KACC10768, KACC10778, KACC11596, KACC13236 and NCCP10862 was habituated up to 9% of NaCl. The inocula of NaCl-habituated and nonhabituated S. aureus were inoculated in 5 g portions of pork cutlet, meat and Carbonara sauces at 7 Log CFU/g, and the samples were vortexed vigorously. The inoculated samples were then exposed to 60 and 70oC in a water-bath, and survivals of total bacteria and S. aureus were enumerated on tryptic soy agar and mannitol salt agar, respectively, every 30 min for 120 min. At 60oC, the cell counts of total bacteria and the significant difference in survivals between sodium-habituated and non-habituated S. aureus were observed only in the Carbonara sauce; the tailing effect, which is the period of no reduction of bacterial cell counts, was observed in pork cutlet, meat and Carbonara sauces subjected to 60oC. At 70oC, total bacterial populations and sodium-habituated and non-habituated S. aureus cell counts in meat and Carbonara sauce also significantly decreased (p
Knockdown of vps54 aggravates tamoxifen-induced cytotoxicity in fission yeast
Lee, Sol,Nam, Miyoung,Lee, Ah-Reum,Baek, Seung-Tae,Kim, Min Jung,Kim, Ju Seong,Kong, Andrew Hyunsoo,Lee, Minho,Lee, Sook-Jeong,Kim, Seon-Young,Kim, Dong-Uk,Hoe, Kwang-Lae Korea Genome Organization 2021 Genomics & informatics Vol.19 No.4
Tamoxifen (TAM) is an anticancer drug used to treat estrogen receptor (ER)-positive breast cancer. However, its ER-independent cytotoxic and antifungal activities have prompted debates on its mechanism of action. To achieve a better understanding of the ER-independent antifungal action mechanisms of TAM, we systematically identified TAM-sensitive genes through microarray screening of the heterozygous gene deletion library in fission yeast (Schizosaccharomyces pombe). Secondary confirmation was followed by a spotting assay, finally yielding 13 TAM-sensitive genes under the drug-induced haploinsufficient condition. For these 13 TAM-sensitive genes, we conducted a comparative analysis of their Gene Ontology (GO) 'biological process' terms identified from other genome-wide screenings of the budding yeast deletion library and the MCF7 breast cancer cell line. Several TAM-sensitive genes overlapped between the yeast strains and MCF7 in GO terms including 'cell cycle' (cdc2, rik1, pas1, and leo1), 'signaling' (sck2, oga1, and cki3), and 'vesicle-mediated transport' (SPCC126.08c, vps54, sec72, and tvp15), suggesting their roles in the ER-independent cytotoxic effects of TAM. We recently reported that the cki3 gene with the 'signaling' GO term was related to the ER-independent antifungal action mechanisms of TAM in yeast. In this study, we report that haploinsufficiency of the essential vps54 gene, which encodes the GARP complex subunit, significantly aggravated TAM sensitivity and led to an enlarged vesicle structure in comparison with the SP286 control strain. These results strongly suggest that the vesicle-mediated transport process might be another action mechanism of the ER-independent antifungal or cytotoxic effects of TAM.
Estimating the Soil Carbon Stocks for a Pinus densiflora Forest Using the Soil Carbon Model, Yasso
Lee, Ah-Reum,Noh, Nam-Jin,Cho, Yong-Sung,Lee, Woo-Kyun,Son, Yo-Whan The Ecological Society of Korea 2009 Journal of Ecology and Environment Vol.32 No.1
The soil carbon stock for a Pinus densiflora forest at Gwangneung, central Korea was estimated using the soil carbon model, Yasso. The soil carbon stock measured in the forest was 43.73 t C $ha^{-1}$, and the simulated initial (steady state) soil carbon stock and the simulated current soil carbon stock in 2007 were 39.19 t C $ha^{-1}$ and 38.90 t C $ha^{-1}$, respectively. Under the assumption of a $0.1^{\circ}C$ increase in mean annual temperature per year, the decomposition and litter fractionation rates increased from 0.28 to 0.56 % $year^{-1}$ and the soil carbon stock decreased from 0.03 to 0.12 % $year^{-1}$. Yasso is a simple and general model that can be applied in cases where there is insufficient input information. However, in order to obtain more accurate estimates in Korea, parameters need to be recalibrated under Korean climatic and vegetation conditions. In addition, the Yasso model needs to be linked to other models to generate better litter input data.
Investigation of Metal Co-evaporated Copper Seed Layers for Copper-Plated Heterojunction Solar Cells
Lee, Sang Hee,Lee, Doo Won,Lee, Ah Reum,Kim, Han Jun,Lee, Soo Hong 한국물리학회 2018 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol. No.
<P>For the reduction of optical loss and contact material cost in silicon heterojunction (SHJ) solar cells, copper plating has been considered as a suitable metallization technique. However, a plated copper contact on an indium-tin-oxide (ITO) generally has low a reliability of adhesion. For this reason, proper seed layer materials are required for adhesive copper plating. As a requirement for a suitable seed layer material, the contact resistance between the seed and the ITO is also important, as well as the adhesion, because high series resistance results in a low fill factor. In this research, we deposited a seed layer by co-evaporating copper with other metals (Cu-X). The contact resistivity (rho (c) ) of the Cu-X deposited on ITO was evaluated by using the transfer length method (TLM). In order to confirm the influence of the work function of the Cu-X, we measured the contact potential difference (CPD) by using photoemission in an air system (PAS). Moreover, phase and we analyzed the crystallite size by using X-ray diffraction (XRD) measurement.</P>