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Hanna Kim,Yeon Su Yu,Kyeong-Yeoll Lee 한국응용곤충학회 2013 한국응용곤충학회 학술대회논문집 Vol.2013 No.10
Plodia interpunctella, Indianmeal moth, is world-widely distributed pest in stored and manufactured agricultural products. Practically, this species seriously damaged by the infestation of most stored and manufactured agricultural products. It is necessary to find useful techniques for the control of stored-product pests insects including P. interpunctella. Recently, heating at 55℃ for 48 h can be practically used to disinfest stored-product insects in the filed of manufactures. To improve efficiency of this technique we conducted combination treatments with heat and diatomaceous earth. At room temperature, wandering larvae, which is most tolerant developmental stage to heat, were not dead regardless of diatomaceous earth (4 mg/L) treatment within 24 h. However, incubation at 40℃, all the larvae were dead with diatomaceous earth treatment while its mortality was 28% without diatomaceous earth treatment. Thus, heating effects was significantly improved by the combined treatments of diatomaceous earth. This effect was increased when temperature was higher and the exposed time is longer. Our results clearly showed that the combined treatments of both heat and diatomaceous earth showed synergistic effects for the control of P. interpunctella.
해조류 바이오매스로부터 바이오슈거 생산 - 열수 및 냉동 전처리의 영향
유한나(Hanna Yu),박미라(Mi-Ra Park),정귀택(Gwi-Taek Jeong) 한국생물공학회 2018 KSBB Journal Vol.33 No.1
In this study, the production of reducing sugar from red-algae Gracilaria verrucosa was investigated using hotwater and freezing pretreatments and subsequent enzymatic hydrolysis. In hot-water pretreatment, 2.16% total reducing sugar (TRS) yield (3.62% based on carbohydrate) was obtained under the condition of 130ºC and 120 min. By subsequent enzymatic hydrolysis, 27.9% TRS yield (46.8% based on carbohydrate) was achieved. In the freezing pretreatment, about 20% TRS yields were similarly obtained in the range of -70℃ to -20℃. Also, solid-to-liquid ratio of 1:10-1:15 presented the similar TRS yield. Moreover, freezing time did not affect TRS yield within tested range of 48 hr. In freezing pretreatment, 3.15% TRS yield (5.28% based on carbohydrate) was obtained under the condition of -70℃ and 48 hr. By subsequent enzymatic hydrolysis, 19.5% TRS yield (32.7% based on carbohydrate) was achieved. From these results, hot-water and freezing pretreatments are available to produce biosugar from G. verrucosa for bio-refinery process.
Chemerys, Hanna Yu.,Ponomarenko, Olga V. Techno-Press 2022 Advances in computational design Vol.7 No.2
The article is devoted to the actual problem of studying the possibilities of implementing personalization of the user interface in accordance with the personality psychotypes. The psychological aspect of user interface design tools is studied and the correspondence of their application to the manifestations of personality psychotypes is established. The results of the distribu-tion of attention of users of these categories on the course page of the educational platform are presented and the distribution of attention in accordance with the focus on educational material is analyzed. Individual features and personal preferences regarding the used design tools are described, namely the use of accent colors in interface design, the application of the prin-ciples of typographic hierarchy, and so on. In accordance with this, the prospects for implementing personalization of the user interface of the educational platform are described. The results of the study allow us to state the relevance of developing and applying personalization of the user interface of an educational platform to improve learning outcomes in accordance with the psychological impact of individual design tools, and taking into account certain features of user categories. The research is devoted to the study of user attention concentration using heatmaps, in particular based on eyetreking technology, we will investigate the distribution of user attention on the course page of an educational platform Ta redistribution of atten-tion in accordance with certain categories of personality psychotypes. The results of the study can be used to rearrange the LMS Moodle interface according to the user's psychotype to achieve the best concentration on the training material. The obtained data are the basis for developing effective user interfaces for personalizing educational platforms to improve the quality of the education.
Kyeong-Yeoll Lee,Hanna Kim,Yeon-Su Yu 한국응용곤충학회 2015 한국응용곤충학회 학술대회논문집 Vol.2015 No.04
Heating for disinfestation has been practiced of at the condition of 55-60°C for at least 48 hours in various facilities of stored and processed agricultural products. However, it has been required to reduce temperature and time due to the economic efficiency. To improve disinfestation efficiency of heating, we demonstrated whether combined treatments of heat with other agents exert synergistic for disinfestation. Heat treatments were combined with 1 ppm diatomaceous earth (DE), 10 ppm phosphine or 10% carbon dioxide against Plodia interpunctella, Sitophilus zeamais and Tribolium castaneum. Insects were treated single or multiple combinations of each component for 6 h at either 25°C or 40°C, then mortalities were monitored for 14 days post-treatments. Combined treatments greatly enhanced mortalities and shorten killing time of three species rather than single treatments. Particularly, heat treatments with 1 ppm DE and 10 ppm phosphine completely lethal within 3-6 h post-treatments, but heating with 10% CO2 was not much effective. Among three species, S. zeamais adults were more suscpetable to heat but both larvae and adults of T. castaneum was highly susceptible to phosphine. Our results clearly showed that combined treatment of DE or phosphine with mild heating (40°C) greatly improved mortalities of three major stored pest insects and provide advanced techniques for disinfestation of stored product pests.
FCT 2-5 A case of stable vitiligo treated with non-cultured keratinocyte-melanocyte transplantation
( Yu Seok Jung ),( Hanna Lee ),( Ji Hae Lee ),( Gyong Moon Kim ),( Jung Min Bae ) 대한피부과학회 2016 대한피부과학회 학술발표대회집 Vol.68 No.2
Background: Surgical interventions for stable vitiligo include cellular and tissue grafting. Cellular grafting includes transplantation of non-cultured keratinocyte- melanocyte suspension and transplantation of cultured pure melanocytes, whereas tissue grafting includes punch, split-thickness and blister roof grafting. Objectives: To demonstrate the efficacy and safety of non-cultured keratinocyte-melanocyte transplantation in stable vitiligo. Methods: A 14-year old female patient presented with large depigmented patch on her lower leg. Intact epidermis was harvested from the normal skin of inner thigh using suction blister technique, and then incubated with trypsin-ethylene-diamine tetra-acetic acid solution at 37 °C for 45 minutes to separate epidermal cells. The cell suspension was filtered through a 70 μm cell strainer. Finally, the cell suspension was centrifuged for 10 min at 1500 rpm. to obtain a cell pellet, and applied to denuded recipient site. Then, the lesion was dressed with vaseline gauze for 7 days, and the narrow-band ultraviolet B therapy was resumed after 21 days. Evaluation of repigmentation was performed 12-week post transplantation. Results: At the 12-week follow-up visit, more than 95% of repigmentation was obtained. No adverse events including infection or visible scarring at any donor or recipient site were noted. Conclusion: Non-cultured keratinocyte-melanocyte transplantation appeared to be safe and effective in the treatment of stable vitiligo.