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패턴이 있는 이야기책 기반 초등영어 학습부진학생의 문자언어 지도에 대한 연구
권현정(Kwon, Hyun-Jeong),김혜리(Kim, Hae-Ri) 한국외국어교육학회 2012 Foreign languages education Vol.19 No.2
The purpose of this study is to explore a new method of teaching literacy to primary English underachievers. In order to attain the objectives, the following research questions were proposed: (1) What aspects are shown in the literacy learning of primary English underachievers through the patterned storybook reading? (2) What changes are shown in the affective domain of primary English underachievers by the literacy learning based on the patterned storybooks? To find answers to the questions, eight 5th grade underachieving students were taught reading and writing. Data from diverse sources were collected and analyzed in a qualitative manner. The data analysis yielded the following results: First, the students in the study could have various experiences in literacy learning because patterned storybooks provided them with opportunities to explore the target language. Second, the study had a positive impact on the students such as overcoming of negative emotions toward their reading and writing, the improvement of reading and writing skills, and increased internal motivation of self-regulated learning. Based on the results, suggestions for future studies are provided.
ICP/MS를 이용한 축산물의 유해중금속 분석방법 및 숙련도 검증
장정희,김동규,권현정,임채미,손성완,김미경,Jang, Jung-Hee,Kim, Dong-Gyu,Kwon, Hyun-Jeong,Lim, Chae-Mi,Son, Seong-Wan,Kim, MeeKyung 대한수의학회 2012 大韓獸醫學會誌 Vol.52 No.2
The analytical method of trace toxic metals in livestock products was confirmed and validated through certified reference material (CRM) and the international proficiency tests. There are some difficulties to determine low levels of toxic metals in livestock products because of interferences due to the matrix. The recoveries of CRM (NIST 1577c) ranged from 73.9 to 119% for lead and from 86.4 to 111% for cadmium in bovine liver. The international proficiency tests were carried out with the milk powder and cocoa powder samples including metals provided by Food Analysis Performance Assessment Scheme (FAPAS$^{(R)}$, UK). The test samples were prepared by microwave digestion using solution of $HNO_3:H_2O_2:H_2O$ (v/v/v = 5 : 2 : 4) and analyzed by ICP/MS. The analytical result of cadmium in milk powder was $121{\mu}g/kg$ with -0.3 of the z-score compared to the assigned value of $131{\mu}g/kg$ by FAPAS$^{(R)}$. The analytical results of lead and cadmium in cocoa powder were $29.2{\mu}g/kg$ and $97.6{\mu}g/kg$, respectively, which satisfied the assigned values of $34.2{\mu}g/kg$ for lead and $126{\mu}g/kg$ for cadmium by FAPAS$^{(R)}$. It is verified that the analytical method is accurate and reliable to determine trace lead and cadmium in livestock products by microwave digestion and ICP/MS.
LC-MS/MS를 이용한 우유 중 설파제의 동시 잔류 분석법
임채미 ( Chae Mi Lim ),권현정 ( Hyun Jeong Kwon ),조병훈 ( Byung Hoon Cho ),박수정 ( Su Jeong Park ),정갑수 ( Gap Su Chung ),손성완 ( Seong Wan Son ) 한국수의공중보건학회 2010 예방수의학회지 Vol.34 No.3
A simple, selective and sensitive procedure for the confirmation of 14 sulfonamide antibacterials in milk was developed. The milk samples were homogenized, extracted and deproteinized by acetonitrile and defatted by n-hexane. Analysis was performed by liquid chromatography with tandem mass spectrometry (LC-MS/MS) in positive mode for all 14 analytes. Mass spectral acquisition was performed in the multi reaction monitoring mode (MRM), selecting two structurally significant transitions per compound. The calibrations were performed in sample matrixes and the interference effect of sample matrixes on the ionization was effectively eliminated. Good linear relationship (R2=0.992~0.999) were observed at 6 concentrations of 2.5~100 ng/g. Satisfied recoveries (86.3~110.2%) of all sulfonamides were demonstrated in spiked milk at three levels from 5 to 20 ng/g. The limits of quantitation (LOQs) for sulfonamides ranged from 0.25~2.1 ng/g.
원저 : LC-MS/MS를 이용한 돈육에서 퀴놀론계 약물의 동시 잔류 분석법
임채미 ( Chae Mi Lim ),권현정 ( Hyun Jeong Kwon ),조병훈 ( Byung Hoon Cho ),박수정 ( Su Jeong Park ),정갑수 ( Gap Su Chung ),손성완 ( Seong Wan Som ) 한국수의공중보건학회 2010 예방수의학회지 Vol.34 No.4
A reversed-phase high-performance liquid chromatography with tandem mass-spectrometric detection was developed and validated for the simultaneous analysis of 13 quinolones (orbifloxacin, sarafloxacin, marbofloxacin, ofloxacin, enrofloxacin, danofloxacin, pefloxacin, ciprofloxacin, norfloxacin, difloxacin, oxolinic acid, flumequine, nalidixic acid) in pork. The drugs were extracted from homogenized sample using acidic buffer (2% trichloracetic acid) and acetonitrile with ethyl acetate. Analysis was performed by liquid chromatograph with tandem mass spectrometry (LC-MS/MS) in positive mode for all quinolones. Mass spectral acquisition was performed in the multi reaction monitoring mode (MRM), selecting two structurally significant transitions per compound. Good linear relationship (R2=0.999) was observed at 6 concentrations of 2.5~100 ng/g. Satisfied recoveries (73.3~105.4%) of all quinolones were demonstrated in spiked pork at three levels from 5 to 20 ng/g. The limits of quantitation (LOQs) for quinolones ranged from 0.25 to 5.0 ng/g.
이종욱 ( Jong Wook Lee ),권현정 ( Hyun Jeong Kwon ),김창준 ( Chang Jun Kim ) 한국환경생태학회 2009 한국환경생태학회지 Vol.23 No.4
2007년 11월부터 2008년 10월까지 경상북도 청도군 운문면과 경남 밀양시 산내면 경계에 있는 운문산의 육상곤충류의 생태 조사의 결과 총 14목 151과 610속 756종이 채집되었다. U1에서 U4에 이르는 조사 지점에서 출현 분류군별점유율은 나비목, 딱정벌레목, 벌목의 순으로 높은 수준을 보였다. 나비목이 252종으로 33.3%의 점유율을 보여 우점하고 있는 것으로 나타났으며, 딱정벌레목이 182종으로 24.1%의 점유율을 보여 아우점하는 것으로 나타났다. 환경부지정 멸종위기 야생동물 II급 (곤충류) 목록에 포함되어 있는 쌍꼬리부전나비(Spindasis takanonis (Matsumura))와 희귀종인 애반딧불이(Luciola lateralis Motschulsky)의 서식이 확인되었다. A faunistic study on the terrestrial insects of Unmunsan(located in the boundary between Unmun-myeon Chongdo-gun Gyoungbuk and Sannae-myeon Milyang-si Gyoungnam, Korea) was carried out during November, 2007 to October, 2008. It was found that terrestrial insects distributed in nature sabbatical area of Unmunsan, were composed of 14 orders, 151 families, 610 genera, 756 species. In this study, it shows the dominances of taxa from site U1 to U4, in order of the following: Lepidoptera, Coleoptera and Hymenoptera. Lepidoptera with 252 species and 33.3% show the highest dominance and Coleoptera follows the former with 182 species and 24.1% in dominance. The rare Luciola lateralis Motschulsky and Spindasis takanonis (Matsumura) which is designated as the endangered species level II by the Ministry of Environment inhabit in Unmunsan.
항공라이다 자료를 이용한 토석류 유출량의 분석 및 평가
우충식 ( Choong Shik Woo ),권현정 ( Hyun Jung Kwon ),이창우 ( Chang Woo Lee ),김경하 ( Kyong Ha Kim ),최두영 ( Doo Young Choi ),서준표 ( Jun Pyo Seo ),정선환 ( Seon Hwan Jeong ) 한국임학회 2014 산림과학 공동학술대회 논문집 Vol.2014 No.-
최근 태풍 및 집중호우로 인해 토석류(土石流)가 급증하고 있다. 토석류 발생시 산지에서 유출되는 토사는 인명 및 재산피해를 가중시키는 주요 원인이지만 토석류 발생시 유출되는 토사량을 추정하기가 어렵다. 따라서, 본 연구에서는 토석류 발생지역인 우면산(2011 년)과 인제군(2006 년), 봉화군(2008 년), 제천시(2008 년)지역을 대상으로 항공라이다 자료를 이용하여 토사유출량을 산정하였으며 이 결과를 이용하여 토사유출특성을 분석하였다. 토석류 발생원(C) 대비 총토사유출량(T)의 비율(C/T)은 2 ∼ 19%로, 계류의 계상 및 계안에서 침식된 토사량이 큰 비중을 차지하였다. 또한, 토사유출량은 계류의 수충부 및 합류부에서 크게 증가하는 경향이 나타났다. 연구지역의 총토사유출량과 발생원(㎥), 계류총길이(m), 계류본류길이(m)의 관계를 분석한 결과 계류총길이와 총토사유출량의 상관성(R2)이 0.874로 가장 높게 나타났다. Recently, debris flow due to typhoons and heavy rainfall is increasing rapidly. It isdifficult to estimate sediment yield caused by debris flow which is the main cause for damage of human life and property. In this study, using airborne LiDAR data, the sediment yield was quantified for Mt. Umyeon in Seoul city, Inje county, Bonghwa county, Jaecheon city where were defeated area by debris flow in 2011, 2006 and 2008. Also, we analyzed the characteristics of the sediment yield using the these results. The proportion(C/T) of the collapsed soil(C) and a amount of the sediment yield(T) was in 2 ~ 19%. This result shows that erosion of the stream bed and bank occupy a large proportion of the sediment yield. The amount of erosion is increased to flow impingement sections and channel junctions of torrents. In addition the correlation of sediment yield with collapsing soil(㎥), a total length(m) and a mainstreamlength(m) were analyzed. As a result, the value of R-square between the sediment yield and a total length was the highest as 0.874.