Investigation on domestic occurrence patterns and migration routes of Ctenoplusia agnata (Lepidoptera: Noctuidae)

Dagyeong Jeong,Hong Hyeon Park,Gwan-Seok Lee,In Hong Jeong,Min Hyeuk Lee 한국응용곤충학회 2023 한국응용곤충학회 학술대회논문집 Vol.2023 No.10

Ctenoplusia agnata (Lepidoptera: Noctuidae) is a polyphagous pest that damage on crops belonging to the Fabaceae and Brassicaceae, and it is known as a migratory pest. In this study, we investigated pattern of occurrence to trace invasion characteristics using sex pheromone traps and conducted genetic analysis of captured individuals while also exploring their correlation with air currents. Our findings suggest that C.agnata exhibits an annual occurrence of four generations in Korea, with the second or third generation, primarily active from July to September, posing a significant threat to soybean. Genetic analysis revealed the presence of 17 haplotypes, and trajectory modeling confirmed the influence of air currents from Kyushu, Japan and Zhejiang, China etc. These results are expected to be used as a comprehensive management of C.agnata and other migratory moth species.

Differential response to immune checkpoint inhibitor in syngeneic gastric cancer mouse models

Dagyeong Lee,Joon Yong Choi,Hye Jeong Oh,In-Hye Ham,Sachiyo Nomura,Hoon Hur 대한종양외과학회 2022 대한임상종양학회 학술대회지 Vol.2022 No.2

Effect of MgO-CaO-Al2O3-SiO2 glass additive on densification of Al2O3 ceramics

Dagyeong Lee,Hyun Seon Hong,Hyeondeok Jeong,Sung-Soo Ryu 한양대학교 세라믹연구소 2022 Journal of Ceramic Processing Research Vol.23 No.2

We investigated the effect of the MgO-CaO-Al2O3-SiO2 (MCAS) additive on the densification of Al2O3 ceramics. MCAS wassynthesized using a polymeric-complex method. We analyzed the densification behavior, using dilatometric analysis up to1600 oC, and the results showed that sinterability increased with increasing MCAS content. Al2O3 samples were prepared byisothermal sintering at 1400, 1500, and 1600 oC. The microstructure, phase formation, and hardness of the samples wereanalyzed and discussed in relation to both the MCAS content and sintering temperature. The density of the MCAS-dopedsamples sintered at 1500 and 1600 oC was over 98%, and the maximum relative density was 99.7%. The highest hardness (18GPa) was achieved for the sample prepared with 3 wt.% MCAS and sintered at 1500 oC for 1 h because further dopingresulted in excessive grain growth. These results elucidate the conditions required for pressure-free sintering.

Association of Coffee or Green Tea with Ferritin or Hemoglobin in Premenopausal Women

Dagyeong Lee,Wonyoung Jung,Dong Wook Shin 대한가정의학회 2023 Korean Journal of Family Medicine Vol.44 No.2

Background: This study aimed to examine the association between coffee or green tea consumption and ferritin or hemoglobin levels in premenopausal women.Methods: We used the fifth Korea National Health and Nutrition Examination Survey (2010–2012), and a total of 4,322 individuals were surveyed. In women of reproductive age, average ferritin and hemoglobin levels were calcu-lated according to coffee or green tea consumption. Covariates included in the analysis were demographic vari-ables, such as age, body mass index, education, drinking, smoking, history of hypertension, history of diabetes di-agnosis, physical activity, total energy intake, and daily iron intake.Results: In 4,322 participants, the average hemoglobin level was 12.90±0.02 g/dL, and the average level of ferritin was 31.95±0.67 ng/mL. As a result of testing, correlation between ferritin and coffee intake and difference in ferritin levels according to coffee consumption was significant (P<0.05). In this study, a post hoc test indicated that ferritin level significantly differed between one and two cups, two and three cups, and three and one cup groups (overall P<0.001). Additionally, there was a negative correlation between ferritin level and coffee intake; ferritin level de-creased by 2.09 ng/mL with a one-cup increase in daily coffee consumption.Conclusion: In premenopausal women, coffee intake is associated with low serum ferritin levels. Our results indi-cate that drinking >2 cups of coffee significantly affect ferritin levels in Korean premenopausal women.

유리드믹스 교수법에 의거한 시니어 대상의 우쿨렐레 연주 지도법

이다경 ( Lee Dagyeong ) 한국달크로즈유리드믹스학회 2017 국내학술심포지엄 Vol.2017 No.-

본 연구는 빠르게 노령사회로 진입하고 있는 한국의 시니어들에게 음악교육을 통하여 정서적인 안정과 삶의 활력을 주고, 자아실현을 통해 보다 나은 시니어들의 생활을 영위하는데 큰 도움을 주고자 한다. 그 중 기악수업에서 다양화 되고 있는 악기들 중, 다양한 연령층이 배우기 용이하며 여러 가지 장점을 가지고 있는 우쿨렐레를 선택하여, 처음 접하는 시니어 학습자들에게 우쿨렐레 악기를 체계적이고, 올바른 연주 지도방안을 모색하고자 달크로즈 유리드믹스 교수법을 적용해서 지도 할 수 있게 하는 데 목적이 있다. 유리드믹스 교수법에 의거한 시니어 대상의 우쿨렐레 연주 지도법의 연주 지도안에 대한 이론적 배경으로는 시니어 교육에 대한 연구와 시니어 교육의 필요성과 유의점을 살펴본 후, 시니어 교육에서의 음악의 역할, 시니어를 위한 우쿨렐레 악기의 역사, 악기의 구조와 명칭 그리고 우쿨렐레의 음악적 교육의 의미와 필요성을 구체적으로 살펴보았다. 또한 우쿨렐레의 지도 연주곡 현황을 유아·어린이, 중·고등학생, 성인, 시니어로 나누어 조사하였으며, 그 중 시니어를 위한 우쿨렐레 연주 지도법을 제시하였다. 달크로즈 유리드믹스 교수법에 의거한 시니어 대상의 우쿨렐레 지도 연주법을 처음 접하는 시니어들에게 우쿨렐레의 특성과 구조를 알게 하고 정확한 주법의 연주능력을 기르게 하며, 연주를 통해 음악의 흥미를 느끼고 리듬감 음악성 등의 능력을 향상 시키고자 한다. 또한 합주나 앙상블을 통하여 타인의 소리를 듣고 협동심, 사회성을 향상시키고자 한다. 출판사 교재들 중 많이 연주되는 곡 들을 선정하여 코드를 중심으로 리듬 수업을 진행하고 노래 부르기에서 달크로즈 유리드믹스에 나오는 리듬을 적용한 게임을 통하여 지도 할 수 있게 제시 하였다. 또한 클래식 감상&예술을 통하여 명화와 미술작업을 등, 다양한 방법으로 우쿨렐레 연주 지도법으로 접근하였다. 이 학습을 통해 기대되는 효과는 다음과 같다. 첫째, 처음 접하는 초급 단계에 따라 우쿨렐레 지도 연주곡을 선택하여 지도방법과 수업지도안을 제시하였고, 달크로즈 유리드믹스 교수법에 의거한 리듬 지도법에 맞춰 노래하기, 신체 표현하기, 음악놀이 등으로 자신이 즐겁고 자발적으로 활동과 함께 수업 진행함으로써 즐겁게 악기를 배울 수 있다. 둘째, 우쿨렐레는 크기가 작고 다른 악기에 비해 배우기가 쉬워 누구나 거부감 없이 음악을 보다 가깝게 느낄 수 있으며, 연주 활동을 통해 학습하는 과정에서 음악적 감각이 향상되어 음악에 대한 관심과 흥미도가 높아지고, 다양한 음악적 경험을 하게 된다. 셋째, 우쿨렐레는 독주와 앙상블, 그리고 합주가 가능한 악기 이다. 달크로즈 유리드믹스의 목표에 접목시켜 집중력과 음악적 감각을 향상 시킬 수 있고 서로 협동하는 음악활동을 통하여 양보심과 협동심 타인과 조화를 이루는 사회성에 대한 긍정적인 경험을 하게 된다. 본 연구에서 제시한 유리드믹스 교수법에 의거한 시니어 대상의 우쿨렐레 연주 지도법은 시니어들이 우쿨렐레를 통하여 음악을 보다 쉽게 이해하고 표현하며, 음악적 능력을 발전시켜 음악적 감각이 향상 될 수 있는 방안을 제시하는데 주력하였다. 시니어들이 우쿨렐레에 많은 흥미와 관심을 가지는 것은 물론이거니와 다양하고 의미 있는 음악 경험을 할 수 있는 발판이 되기를 바란다. The purpose of this study is to provide emotionally stable and revitalized life through the music education to seniors who are rapidly entering the aging society and to help the seniors to live better life through self - realization. among them. This study aimed to select an ukulele which is easy to be learned by various age groups and has various advantages, among instruments diversified in instrumental classes, and teach new senior learners by applying the Dalcroze-Eurhythmics Teaching Method in order to find a systematic and correct playing instruction method of the ukulele instrument. As a theoretical background for a playing instruction plan of the ukulele's playing instruction method for the seniors according to the Eurhythmics Teaching Method, a research on the senior education, and the necessity and the importance of the senior education were examined. Then, roles of the music in the senior education, a history of the ukulele instrument for the seniors, structures and names of the musical instrument, and the meaning and the necessity of the ukulele's musical education were examined in detail. In addition, status of the ukulele's instruction playing songs was surveyed by dividing the subjects into infants, children, middle and high school students, adults and seniors, and methods of ukulele instruction playing for seniors out of them, were suggested. Therefore, this study aims to let the seniors identify the structures and the characteristics of the ukulele, let them develop the ability to play the accurate playing styles, let them feel the interest on the music through playing and improve the ability such as rhythmic sense and musicality. Furthermore, this study aims to improve team work and sociality by listening to the sounds of others through concerted music or ensemble. In this study, rhythm lessons were performed focused on chords by selecting a lot of songs frequently played from the publishing materials, and they were suggested in order to teach through games applying the rhythms presented in the Dalcroze-Eurhythmics Method in the singing songs. In addition, ukulele's various playing instruction methods such as masterpieces and artworks through classical appreciation & art also were used for the approach. The expected effects from this are as follows. First, this study suggests the instruction methods and the lesson instruction plans by selecting the ukulele's instruction playing songs according to the beginner's level, and enable people to learn musical instruments happily by conducting class with activities such as singing songs, body expression and music play according to the rhythmic instruction method based on Dalcroze-Eurhythmics Teaching Method. Second, the ukulele is small in size and easy to learn compared to other musical instruments, so that everyone can feel closer to the music without repulsion, and in the process of learning through playing activities, the musical sense is improved and interest in music is enhanced so that various musical experiences can be obtained. Third, the ukulele is a musical instrument capable of solo, ensemble and concerted music. It can enhance the concentration and the musical sense by combining with the goal of the Dalcroze-Eurhythmics, and through the musical activities of mutual cooperation, it gives a positive experience for the sociability for harmonizing with other people. The ukulele's playing instruction method based on the Eurhythmics Teaching Method proposed in this study, focuses on suggesting a method for seniors to understand and express music easily through the ukulele and to improve musical sense by developing musical ability. This study intends to enable seniors to have a lot of interest in the ukulele and be a stepping stone for various and meaningful music experiences.

A comparative study of host plants and oviposition traits of Ricania sp. (Hemiptera: Ricaniidae)

Dagyeong Jeong,Hong Hyeon Park,Gwan-Seok Lee,In Hong Jeong,Meeja Seo 한국응용곤충학회 2023 한국응용곤충학회 학술대회논문집 Vol.2023 No.04

HIPVs enhanced biocontrol potential of a larval parasitoid, Exorista japonica

Meeja Seo,Dagyeong Jeong,In Hong Jeong,Gwan Seok Lee,Hong Hyun Park 한국응용곤충학회 2023 한국응용곤충학회 학술대회논문집 Vol.2023 No.10

We investigated the behavioral attractive responses of a lepidopteran larva parasite, Exorista japonica to 10 synthetic herbivore-induced plant volatiles (HIPVs). These synthetic HIPVs have been revealed the attractive effect on several parasites. For each of the HIPVs, we asked the following two questions : (1) Which volatiles show the attractiveness to this parasitoid, (2) Whether the attractant directly or indirectly affects the host settlement and parasitism of the parasitoid. To experimentally address these questions, we performed 2 and 4 choice indoor cage tests. E. japonica adults were significantly attracted to benzaldehyde and (Z)-3-hexen-1-ol showing higher settlement and parasitic rates on Spodoptera litura of treatments. Compared to the untreated plots, the average parasitism of E. japonica on S. litura larvae in the benzaldehyde treatments increased by approximately 20%.

Control of Bemisia tabaci in Greenhouse Tomato using Systemic Insecticide-treated Trap Plant

Leesun Kim,Meeja Seo,Dagyeong Jeong,Bo Yoon Seo,Jonghwa Lee,In-hong Jeong 한국농약과학회 2023 농약과학회지 Vol.27 No.4

This study aimed to develop a new control method of Bemisia tabaci using a tobacco plant treated with systemic insecticide in tomato greenhouse cultivation. In the preference tests, it was demonstrated that tobacco is a better B. tabaci attractant than the seven tested solanaceous plants. Most importantly, B. tabaci prefers tobacco (65%) to the main host plant, tomato (35%). Among 6 systemic insecticides, dinotefuran WG was highly effective (mortality > 97.3%) against B. tabaci and exhibited less or non-disruptive tendency on insect behavior on dinotefuran-treated tobacco plants. The dinotefuran concentrations in tobacco leaves obtained using modified QuEChERS method with liquid tandem mass spectrometry rapidly increased over time, and mortality of B. tabaci populations recovered from tobacco leaves was over 90% within 24 hrs after insecticide treatment. The mortalities were consistently over 90 to 100% until 35 d. The upper leaves of tobacco showed slightly higher concentration of insecticide, including the resultant B. tabaci mortalities than the lower leaves. Compared with that of greenhouse with no tobacco plants (100%), the population of B. tabaci in greenhouses with two and three insecticide-treated tobacco plants increased by 53%-63% and 22% respectively. These results confirmed that a dinotefuran-treated tobacco plant can be an effective trap plant for the control of B. tabaci in tomato cultivation greenhouses.

Density and age of Spodoptera frugiperda larvae influences on Meteorus pulchricornis parasitism

Meeja Seo,In Hong Jeong,Dagyeong Jeong,Gwan Seok Lee,Jum Rae Cho,Hong Hyun Park 한국응용곤충학회 2022 한국응용곤충학회 학술대회논문집 Vol.2022 No.10

Simultaneous Direct Analysis of Clethodim and relevant metabolites in agricultural products based on LC-MS/MS

EunJoo Baek,Hyejin Park,ChaeUk Lim,Juryeong Lee,Dagyeong Kim,Sujeong Shin,Hyerim Yu,Byeung Gon Shin,Soon-Kil Cho,Sung-Hee Hong 한국농약과학회 2022 한국농약과학회 학술발표대회 논문집 Vol.2022 No.4