Introduction and application of a composite insect trap for the National Ecosystem Survey of Korea

Han Yong‐Gu,Hong Eui jeong,Kim Do‐Sung,Kim Chulgoo,Cha Jin Yeol 한국곤충학회 2020 Entomological Research Vol.50 No.10

This study aimed to establish the best applicable method for the National Ecosystem Survey (NES) guidelines by (i) verifying the efficiency of an insect trap that combined the Malaise trap, flight intercept trap, and pitfall trap (MFP trap) as part of the improvement for the terrestrial insect field in the fifth NES, and (ii) comparing the result with the currently used Malaise trap and pitfall trap (MP traps). We found that the efficiency of attaining species diversity was much higher with the added flight intercept trap function than the current Malaise trap alone for flying insect collection. For collecting ground insects, the efficiency of attaining species diversity of the pitfall trap from the MFP trap was lower than that from the MP trap. Besides, the Malaise trap of the MP trap showed superior efficiency than that of the MFP trap in species diversity. The results suggested that modification, supplementation, and re‐testing should be performed by analyzing various factors such as the trap material, barrier size, capturing container inlet, and mesh size, with consideration of the design of the current Malaise trap. Therefore, in survey‐based research, which aims at identifying insects species diversity and inhabiting status—such as the NES, it is necessary to introduce the MFP trap with the flight intercept trap function added to the Malaise trap function, and for the pitfall trap function of the MFP trap, it can be operated as a separate trap from the MFP trap.

Layer-by-Layer Doping of Few-Layer Graphene Film

Gü,neş,, Fethullah,Shin, Hyeon-Jin,Biswas, Chandan,Han, Gang Hee,Kim, Eun Sung,Chae, Seung Jin,Choi, Jae-Young,Lee, Young Hee American Chemical Society 2010 ACS NANO Vol.4 No.8

<P>We propose a new method of layer-by-layer (LbL) doping of thin graphene films. Large area monolayer graphene was synthesized on Cu foil by using the chemical vapor deposition method. Each layer was transferred on a polyethylene terephthalate substrate followed by a salt-solution casting, where the whole process was repeated several times to get LbL-doped thin layers. With this method, sheet resistance was significantly decreased up to ∼80% with little sacrifice in transmittance. Unlike samples fabricated by topmost layer doping, our sample shows better environmental stability due to the presence of dominant neutral Au atoms on the surface which was confirmed by angle-resolved X-ray photoelectron spectroscopy. The sheet resistance of the LbL-doped four-layer graphene (11 × 11 cm<SUP>2</SUP>) was 54 Ω/sq at 85% transmittance, which meets the technical target for industrial applications.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/ancac3/2010/ancac3.2010.4.issue-8/nn1008808/production/images/medium/nn-2010-008808_0006.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nn1008808'>ACS Electronic Supporting Info</A></P>

XML기반 전자상거래 프레임워크 기술

한흥구,박진석,윤순영,최성 호서대학교 반도체제조장비국산화연구센터 2001 반도체장비학술심포지움 Vol.2001 No.-

백화사설초 메탄올 추출물에 의한 HL-60 細胞 枯死過程에서의 cell cycle 關聯因子의 活性變化 硏究

한세희,이종범,문구,문석재,원진희,박래길,이종덕 대한한방종양학회 2000 대한한방종양학회지 Vol.6 No.1

Objecives: Hedyotis diffusa is used to treat cancer in traditional Korea Medicine. So this study was carried out to examine the expression of cell cycle related genes in HL-60 cells undergoing apoptosis by the methanol extract of Hedyotis diffusa. Methods: 1. HL-60 cells were treated with various concentrations (from 200 to 50㎍/ml)of metnanol extract and H20 extract (200 ㎍/ml) of hedyotis diffusa. After 48 h later, the cells were tested for viability by MTT assay. 2. The HL-60 cells were treated with 200 ㎍/ml of methanol extract for the indicated periods. The whole cell lysates were prepared and analyzed by westem blotting using anti-p53 antibody. 3. The nuclear extract were prepared and analyed by western blotting using anti-p21 antibody, anti-p27 antibody, anti-cyclen A antibody, anti-cylin E antibody and anti-CDK2 antinbody. Results: 1. The methanol extract of Hedyotis diffusa induced the death of HL-60 cells in a dose dependent manner. 2. The methanol extract of Hedyotis diffusa makedly decreased the level of p21/Cipl and cyclin A in a time dependent manner. 3. The methanol extract of Hedyotis diffusa markedly increased tje ;eve; pf p27/Kip and cyclin E in a time dependent mammer. 4.The methanol extract of Hedyotis diffusa markedly did not affect the level of CDK2. Conclusions: These results provide evidence that expression of cell cycle related genes in HL-6- cells undergoing apoptosis by the methanol extract of Hedyotis diffusa mainly results from decreased level of p21/cipl and increased level of p27/Kipl of the cell cycle related genes.

IGIS : 웹 상에서의 인터넷 지리 정보 시스템

문진용,백인구,한기준 건국대학교 산업기술연구원 2000 건국기술연구논문지 Vol.25 No.-

Recently, as application fields of a computer are increased, a Geographical Information System(GIS), which stores a large volume of geographical data into a computer and manages them efficiently according to user's needs, is widely used. Since the Internet has a great potential for geographical information systems, researches in an internet geographical information system have received much attentions in recent years. In this paper, we designed and implemented an Internet Geographical Information System, called IGIS, that supports the client/server architecture connected via the Internet. IGIS consists of the Map Server and the Map Viewer which can be located at a server site and client sites, respectively. In addition, we used the Common Gateway Interface(CGI) to service the geographical information on the Internet and used a DXF(Data eXchange Format) file as a geographical data in IGIS. Because IGIS adopts the helper application approach, it enables users to manage Hangul and English data and perform display, zoom-in/zoom-out, pan functions on the GUI(Graphical User Interface).

축산시설의 입지특성 분석 : 안성시 미양면을 중심으로

황한철,전우정,이남호,홍성구,김진태 안성산업대학교 1998 論文集 Vol.30 No.2

It is necessary to evaluate the location suitability of livestock facilities to guide reasonable livestock. The evaluation system could help plan new livestock facilities in rural areas. The assessment was performed based on location characteristics of livestock facilities such as land utilization around livestock facilities, size of livestock facilities, water and drainage condition, accessibility and distance from roads, floor condition, distance from village and house, direction of livestock facilities, ventilation facilities, animal Waste treatment, and so forth. In this study, location characteristics of livestock facilities were showed each location factors using statistical analysis.

정신분열증 환자의 전산화 단층촬영상 대뇌 비대칭성과 대뇌 위축과의 관계

유태열,한진희,채영래,김광수,노왕구 大韓神經精神醫學會 1991 신경정신의학 Vol.30 No.3

Since the advent of computed tomography(CT). there have been growing evidences of cerebral structural abnormalities in schizophrenics. Among them. reversed hemispheric asymmetry has been regarded as impaired cerebral lateralization of schizophrenics representing another pathology different from brain atrophy. To investigate the pattern and frequency of reversed cerebral asymmetry and their relationship with brain atrophy. we analyzed widths of frontal and occipital region on the brain CT scans of right-handed 56 schizophrenics and 52 normal controls by a manual method. Brain atrophies were assessed using fixed arm planimetry and visual lineat measurements. Compared to normal controls. the schizophrenics show significantly increased frequency of reversed occipital asymmetry. Dividing the schizophrenics into group according to the evidences of atrophy revealed more reversed occipital asymmetry than those with brain atrophy. These findings suggest that reversed cerebral asymmetry might be unrelated to brain process and would be a neuroanatomic evidence of abnormal asymmetry of schizophrenices.

실험계획법을 이용한 능동형 미소혼합기의 근사최적화

박재용,이원구,유진식,김용대,한석영,맹주성 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-

An active micro-mixer, which was composed of an oscillating micro-stirrer in the microchannel to provide rapid, effective mixing at high flow rates was analyzed. The effects of molecular diffusion and disturbance by the stirrer were considered with regard to two types of mixer models: the simple straight microchannel and microchannel with an oscillating stirrer. Two types of mixer models were studied by analyzing mixing behaviors such as their interactionafter the stirrer. The mixing was calculated by Lattice Boltzmann methods using the D2Q9 model, In this study, the time-averaged mixing index formula was used to estimate the mixing performance of time-dependent flow. The mixing indices of the two models were compared. From the results, it was found that the mixer with an oscillating stirrer was much more enhanced and stabilized. Therefore, an approximate optimization of an active micro-mixer with an oscillating stirrer was performed using Kriging method with OLHD(Optima1 Latin Hypercube Design) in order to obtain a optimum solution. The design parameters were established as the frequency, the length and the angle of the stirrer, and the optimal values were determined to be 1.0346, 0.66D and ±45°, respectively. It was found that the mixing index of the optimal design increased by 88.72% compared with that of the original design.

일부 청소년들에서 흡연노출량에 따른 혈중 카드뮴 농도

장성실,권윤형,배진순,노영만,한진구 韓國學校保健學會 2001 韓國學校保健學會誌 Vol.14 No.2

Objectives: We surveyed the prevalence of smoking among the adolescent population and analysed the correlation of the two exposure biomarkers-concentration of blood cadmium and urinary cotinine-to the smoking status. Methods: Subjects were 193 middle and high school students in Chungnam province. Blood cadmium and urinary cotinine were compared by sex and smoking status. Smoking status were classified by either the concentration of urinary cotinine or subjective answering as a smoker in the questionnaire. Results: Smoking prevalence was 24.6%, 36.2% and 6.7% among all subjects, male and female subjects, respectively. Average smoking amount was 17.5 and 1.5 cigarettes per month among the male subjects and female subjects, respectively Mean concentration of urinary cotinine among the male subjects was 135.57 ㎍/ℓ, and that of female subjects was 116.59 ㎍/. Direct smokers showed higher concentration of urinary cotinine than those of indirect smokers, and subjects with higher urinary concentration showed higher prevalence of smoking, too. Mean concentration of blood cadmium was 0.0572 ㎍/㎗ among the male subjects, and 0.0693 ㎍/㎗ among the female subjects. Among the male subjects, both exposure biumarkers showed significant correlation to the smoking status, but among the female subjects urinary cotinine did not show significant correlation to the smoking status. Conclusion: Concentrations of these two biomarkers suggested that this population had significantly high evironmental tobacco smoking(ETS) and efficient stop-smoking programs to reduce ETS should be directed to this population. Key words : environmental tobacco smoking, urinary cotinine, blood cadmium

크리깅 기법을 이용한 마이크로 믹서의 최적 설계

박재용,김상락,이원구,유진식,김용대,한석영,맹주성 한국공작기계학회 2007 한국공작기계학회 추계학술대회논문집 Vol.2007 No.-

An active micro-mixer, which was composed of an oscillating micro-stirrer in the microchannel to provide rapid, effective mixing at high flow rates was analyzed. The effects of molecular diffusion and disturbance by the stirrer were considered with regard to two types of mixer models: the simple straight microchannel and microchannel with an oscillating stirrer. Two types of mixer models were studied by analyzing mixing behaviors such as their interactionafter the stirrer. The mixing was calculated by Lattice Boltzmann methods using the D2Q9 model. In this study, the time-averaged mixing index formula was used to estimate the mixing performance of time-dependent flow. The mixing indices of the two models were compared. From the results, it was found that the mixer with an oscillating stirrer was much more enhanced and stabilized. Therefore, an optimum design for a dynamic micro-mixer with an oscillating stirrer was performed using Kriging method in order to obtain a optimum solution. The design parameters were established as the frequency, the length and the angle of the stirrer, and the optimal values were determined to be 2.0932, 0.8D and ± 75°, respectively. It was found that the mixing index of the optimal design increased by 88.47% compared with that of the original design.