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GA₃와 Streptomycin 복합처리가 블랙베리 무핵화 유기에 미치는 영향
정혜민(HeaMin Jeong),김은주(Eun Ju Kim),최동근(Dong Geun Choi) 한국원예학회 2018 원예과학기술지 Vol.36 No.5
본 연구는 GA₃와 Streptomycin(SM) 복합처리 시기와 농도가 블랙베리 ‘슈퍼’의 착과율, 무핵소과율 및 과실품질에 미치는 영향을 구명하고자 수행되었다. GA₃ 농도를 12.5, 25.0, 50.0, 100mg·L<SUP>-1</SUP>로 하고 SM 200mg·L-1을 각각 혼용하였고, 처리시기는 1회 처리는 30% 개화했을 때(30% FB)와 50% 개화했을 때(30% FB), 그리고 중복처리는 30%와 50% 개화했을 때 2회 처리(30 + 50% FB)하였다. GA₃ + SM 복합처리가 착과율과 과실 품질(경도, 당도, 산도)에는 영향이 없었지만, 과중은 모든 GA₃ + SM 처리에서 낮아졌으며 특히 중복처리(30 + 50% FB)에서 더 낮아졌다. 그러나 무핵소과율은 GA3 처리농도가 증가할수록 높게 나타났는데, 이러한 효과는 30% FB 1회 처리보다 50% FB 1회 처리와 30% + 50% FB 중복처리구에서 더 크게 나타났으며, 무처리구의 무핵소과율은 2.5%이었으나 30% FB 1회 처리구는 22.2-35.2%, 50% FB 1회 처리구는 31.6-42.2%, 30% FB + 50% FB 중복처리구는 22.6-56.7%로 나타났다. GA 처리농도별로는 GA3 25mg·L<SUP>-1</SUP> + SM에서 35.3-56.7%로 높았다. 기형과율은 무처리에서는 2.9%이었으나 GA₃ 처리농도가 증가할수록 높게 나타나 13.4-35.3% 수준으로 나타났다. 과실의 종경은 GA₃ 농도가 증가할수록 약간 길어졌으나 횡경은 처리시기별 차이가 없었다. This study was carried out to determine the effects of various application times and concentrations of GA₃ with streptomycin (SM) on fruiting, the rate of seedless drupelet formation, and fruit quality in ‘Super’ blackberry. Flower clusters were sprayed with GA₃ at 12.5, 25.0, 50.0, and 100 mg·L<SUP>-1</SUP> combined with 200 mg·L<SUP>-1</SUP> SM. Single treatments were conducted using a hand sprayer at 30% and 50% of full bloom (FB), and duplicate treatments were conducted by spraying twice at 30% and 50% FB, respectively. The application of GA₃ + SM on flower clusters had no effect on fruit set, harvest time, or various fruit qualities (fruit firmness and SSC). The rate of seedless drupelet formation for control fruit was approximately 2.5%. Under single treatment, the rate of seedless drupelet formation was higher at a spray time of 50% FB compared with 30% FB treatment, and the rate was highest at a GA concentration of 25.0 mg·L<SUP>-1</SUP>. The highest seedless drupelet rate was 56.7% for fruits sprayed twice at 30% and 50% FB with GA + SM. Single treatment at 30% FB with 100 mg·L<SUP>-1</SUP> GA₃ + SM induced 22.2-35.2% seedless drupelet formation, whereas single treatment at 50% FB and duplicate treatments at 30 and 50% FB led to the formation of seedless drupelets at a rate of 31.6-42.2% and 22.6-56.7%, respectively. Among GA concentrations, 25.0 mg·L<SUP>-1</SUP> GA₃ treatment led to the highest rate of seedless drupelet formation (35.3-56.7%). The occurrence of malformed berries was higher in the GA + SM treatment group than in the control, and the incidence increased with increasing GA concentration. GA₃ + SM treatment slightly increased fruit length but had no effect on fruit diameter.
장혜민(HeaMin Jang),최재광(Jaegwang Choi),이유경(Yu-Kyeong Lee),송원영(Wonyoung Song) 한국발달지원학회 2021 발달지원연구 Vol.10 No.2
청소년 절도비행은 가장 빈번히 발생하는 청소년 비행으로 점차 가해 연령이 낮아지고 다른 범죄와 연관되는 추세를 보이고 있다. 이 연구는 국내·외 청소년 절도비행과 관련된 문헌의 분석을 통해 절도비행청소년의 심리적 특성과 개입 방안에 대해 탐색 및 종합하여 이론적 틀을 제시하고 후속 연구의 방향성을 제안하고자 수행하였다. 이를 위해 국내·외 청소년 절도비행과 관련된 학술문헌 27편과 개입 관련 자료 9개를 선정하여 분석하였다. 분석결과, 절도비행과 관련된 원인은 크게 개인적, 환경적, 발달적 원인으로 구분되었다. 개인적 원인에는 자극추구성향, 반사회성, 충동성, 자아존중감, 정서 문제가 있었으며 발달적 원인은 또래동조성, 우월감 추구, 비행청소년과의 유대, 지위비행, 소년법으로 구성되었고 환경적 원인은 가정과 학교로나뉘어 설명되었다. 개입과 관련해서 국내에서는 다양한 이론을 바탕으로 개발된 여러 프로그램 연구가 진행되었으나 국외의 경우는 지역사회에서 실제 운영되고 있는 프로그램 이외에 절도비행청소년만을 대상으로 하는 프로그램 연구는 매우 적었다. 이러한 결과를 바탕으로 청소년 절도비행과 관련된 후속 연구에 대한 제언과 이 연구의 의의 및 한계점을 논의하였다. Juvenile theft shows a very high incidence and recidivism rate among juvenile crimes. Also, the age of crime is gradually decreasing and there is a trend that is linked to other crimes. Therefore, this study attempted to propose a theoretical framework by exploring and synthesizing the causes and interventions of theft by analyzing the documents related to the theft of adolescents. To this end, 27 academic literature related to domestic and foreign juvenile theft and 9 intervention-related materials were selected and analyzed. Results were as follows. Personal causes related to youth theft include sensation-seeking tendencies, antisociality, impulsivity, low self-esteem, and emotional problems. Developmental issues consisted of peer conformity, the pursuit of superiority, bonds with delinquent youth, juvenile delinquency, and juvenile law. Environmental issues were divided into home and school. In Korea, several programs have been studied based on various theories, but in the case of overseas, there have been very few programs that only target juvenile thefts in addition to the programs that are actually operated in the community. Based on these results, suggestions for follow-up studies related to juvenile thefts and the significance and limitations of this study were discussed.
Short-Lived Radioisotope Tc98 Synthesized by the Supernova Neutrino Process
Hayakawa, Takehito,Ko, Heamin,Cheoun, Myung-Ki,Kusakabe, Motohiko,Kajino, Toshitaka,Usang, Mark D.,Chiba, Satoshi,Nakamura, Ko,Tolstov, Alexey,Nomoto, Ken’ichi,Hashimoto, Masa-aki,Ono, Masaomi,Kawano, American Physical Society 2018 Physical Review Letters Vol.121 No.10
Yum, Woo Sung,Jeong, Yeonung,Song, Heamin,Oh, Jae Eun Elsevier 2018 Construction and Building Materials Vol.185 No.-
<P><B>Abstract</B></P> <P>This study explored the possibility of using limestone fines (LF) as a supplementary material in activated slag binder systems using two types of activators (i.e., 10 wt% of Ca(OH)<SUB>2</SUB> or 10 wt% of Ba(OH)<SUB>2</SUB>) and investigated the interactions of the activators with LF in each binder system through strength testing, powder X-ray diffraction, thermogravimetry, and mercury intrusion porosimetry. Using these binders, concrete brick samples containing LF were also made and examined for possible industrial applications. Although the influences of the LF addition on the strength, dissolution degree of the slag, reaction products, and pore-size distribution depended on the type and dosage of the activator, the addition was generally advantageous for all these aspects in both types of activations. The concrete brick made of 20 wt% LF using the Ba(OH)<SUB>2</SUB> activation fulfilled the Korean standard requirements of strength and water absorption for concrete bricks, and it also satisfied the criteria of the leaching test for possible toxic elements.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Limestone fines (LF) was studied as a supplementary material in activated slags. </LI> <LI> Main activators for slag were Ca(OH)<SUB>2</SUB> or Ba(OH)<SUB>2</SUB>. </LI> <LI> At early ages, the use of LF significantly improved strength in both activations. </LI> <LI> The use of LF significantly changed reaction products of Ba(OH)<SUB>2</SUB> activation. </LI> <LI> However, the use LF did not alter reaction products of Ca(OH)<SUB>2</SUB> activation. </LI> </UL> </P>
청소년 절도비행 재범방지 프로그램 개선을 위한 실무자 요구조사 연구
최재광,장혜민,이유경,송원영,Choi, Jaegwang,Jang, Heamin,Lee, Yu-Kyeong,Song, Wonyoung 중소기업융합학회 2021 융합정보논문지 Vol.11 No.9
이 연구는 청소년 재범방지 프로그램을 진행하는 실무자의 요구를 바탕으로 기존의 프로그램을 합리성과 현장성을 갖춘 프로그램으로 개선하기 위해 수행하였다. 선행연구를 바탕으로 요구조사 설문지를 제작하였고, 청소년절도비행 예방프로그램을 진행하고 있는 전국의 보호직 공무원과 교육 강사 72명을 대상으로 설문조사를 실시하였다. 수집된 자료를 분석한 결과 실무자들은 자기통제력 부족과 높은 충동성 문제를 절도비행청소년의 주된 특징으로 보고하였으며, 또래동조 및 가정문제가 절도비행을 일으키는 원인으로 인식하고 있었다. 청소년 절도비행 재범방지 프로그램 내용에 대해서는 심리적 문제 이해, 또래 관계, 준법의식 고취, 분노 및 충동 조절, 부정적 정서 다루기, 대안 행동 찾기 등 재범방지 연습, 도덕성 발달이 가장 필요하다고 보고하였다. 이러한 결과는 청소년 절도비행 재범을 방지하기 위해 개인, 가정, 또래 등 다차원적인 개입이 필요하다는 것을 의미한다. 프로그램개선을 위한 시사점과 향후 지원 방향, 연구의 제한점 및 의의를 논의하였다. This study is aimed to improve the youth theft prevention program with rationality and practicality, based on the needs of practitioners who conduct these programs in fields. The survey questionnaire was prepared based on previous researches, and the survey was conducted on 72 probation officers and education instructors nationwide running a youth theft prevention program. As a result, practitioners reported the lack of self-control and high impulsivity as the main characteristics of the theft delinquent adolescents. And they recognized peer alignment and family problems as the causes of theft. As for the contents of the program, they reported that recidivism prevention skills such as understanding psychological problems, peer relationships, raising a sense of law compliance, anger, impulse control, dealing with negative emotions, and finding alternative behaviors, as well as moral development, are necessary. These results indicate that multi-dimensional interventions such as individuals, families, and peers are needed to prevent recidivism of juvenile theft. Implications of these results, future research directions, and limitations and significance of the study were discussed.