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Nano Research 2017年第3期10卷 971-979页

作者： Taekyung Lim Jaejun Lee Jonghun Lee sanghyun ju Department of Physics Kyonggi University Suwon Gyeonggi-Do 443-760 Republic of Korea

In this study, we report the utilization of a three-dimensional （3D） porous graphene structure as liquid-vapor separation filter, which allows the passage of chemical vapors while blocking liquid chemicals and water. The blockage of liquid chemicals and water from semiconducting sensing regions is required to avoid abnormal transistor characteristics. In order to impart omniphobic characteristics, a （heptadecafluoro-1,1,2,2-tetrahydrodecyl）trichlorosilane （HDF-S） self-assembled monolayer was coated on the surface of the 3D porous graphene structure. The concentration of chemical agents in water could be consistently detected by observing the shift in the threshold voltage in the oxide nanowire transistor covered by the HDF-S self-assembled 3D graphene structure. The proposed monitoring method is expected to offer means for application in different environments by providing a stable sensing performance.

关键词： chemical detection graphene structure nanowire transistor self-assembled monolayer omniphobicity

Development of multi-angle fiber array for accurate measurement of flexion and rotation in human joints

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npj Flexible Electronics 2021年第1期5卷 284-295页

作者： Sang-Mi Jeong Minkyun Son Youngsoo Kang Jonguk Yang Taekyung Lim sanghyun ju Department of Nanoengineering Kyonggi UniversitySuwonGyeonggi-Do 16227South Korea

Herein,we have proposed a method that uses a highly stretchable and conductive fiber-based multi-angle fiber array,which precisely measures human joint motion in various degrees of freedom(flexion and rotation)at the shoulders,knees,and wrists in real *** embedding conductive carbon nanotubes(CNTs)within spandex fibers of high elasticity and shape recovery ratio,we monitored joint motion stably without degrading the fiber’s conductivity even during repeated stretching and contraction of different *** strain occurring in a specific direction was monitored using mapping images generated due to the change in resistance that occurred when 12 CNT-embedded spandex fibers arranged in radial lines at intervals of 15°were stretched or contracted by an external *** proposed high-precision joint-monitoring technology measures human motion accurately and is applicable for use in wearable healthcare devices that require precise measurements.

关键词： fiber rotation angle

Research on flexible display at Ulsan National Institute of Science and Technology

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npj Flexible Electronics 2017年第1期1卷 47-59页

作者： Jihun Park sanghyun Heo Kibog Park Myoung Hoon Song ju-Young Kim Gyouhyung Kyung Rodney Scott Ruoff Jang-Ung Park Franklin Bien School of Materials Science and Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan Metropolitan City 44919Republic of Korea School of Electrical and Computer Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan Metropolitan City 44919Republic of Korea Department of Physics Ulsan National Institute of Science and Technology(UNIST)Ulsan Metropolitan City 44919Republic of Korea School of Design and Human Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan Metropolitan City 44919Republic of Korea Center for Multidimensional Carbon Materials Institute for Basic Science(IBS)Ulsan 44919Republic of Korea Department of Chemistry Ulsan National Institute of Science and Technology(UNIST)Ulsan 44919Republic of Korea

Displays represent information visually,so they have become the fundamental building block to visualize the data of current electronics including ***,electronics have been advanced toward flexible and wearable electronics that can be bent,folded,or stretched while maintaining their performance under various ***,recent advances in research to demonstrate flexible and wearable displays are *** introduce these results by dividing them into several categories according to the components of the display:active-matrix backplane,touch screen panel,light sources,integrated circuit for fingerprint touch screen panel,and characterization tests;and we also present mechanical tests in nano-meter scale and visual ergonomics research.

关键词： dividing electronics panel

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栗疫病菌弱致病力的遗传变异分析

栗疫病菌弱致病力的遗传变异分析

Analysis of apigenin in <i>Blumea balsamifera</i>Linn DC. and its inhibitory activity against aldose reductase in rat lens

中国植物病理学会2008年学术年会

作者：朴春根 Lee Seungkyu Lee sanghyun Kim Kyunghee Byung-ju Moon 中国林业科学研究院森林生态环境与保护研究所国家林业局森林保护学重点实验室

为了分析栗疫病菌的自然弱致病力菌株和通过细胞融合具有 dsRNA 的转化弱致病力菌株的遗传稳定性,对单孢后代进行了培养特性和 dsRNA 变异分析。结果表明,自然弱致病力菌株和转化弱致病力菌株的单孢分离后代都发生了菌丝生长、产孢能力... 详细信息

为了分析栗疫病菌的自然弱致病力菌株和通过细胞融合具有 dsRNA 的转化弱致病力菌株的遗传稳定性,对单孢后代进行了培养特性和 dsRNA 变异分析。结果表明,自然弱致病力菌株和转化弱致病力菌株的单孢分离后代都发生了菌丝生长、产孢能力、菌落颜色等培养特性的变化:自然弱致病力菌株和转化弱致病力菌株的 dsRNA 均能稳定地遗传给后代。

关键词：栗疫病菌 Cryphonectria parasitica 弱致病力变异

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Journal of Agricultural Chemistry and Environment 2012年第1期1卷 28-33页

作者： Dong Gu Lee So-Youn Mok Changsun Choi Eun ju Cho Hyun Young Kim sanghyun Lee Department of Food and Nutrition Chung-Ang University Anseong South Korea Department of Food Science and Nutrition Pusan National University Busan South Korea Department of Food Science Gyeongnam National University of Science and Technology Jinju South Korea Department of Integrative Plant Science Chung-Ang University Anseong South Korea

To investigate the therapeutic potentials of na- tural sources, stepwise polarity fractions of Blumea balsamifera were tested for their ability to inhibit aldose reductase (AR) activity in rat lenses. Of these, the ethyl acetate (EtOAc) fraction exhibited a unique AR inhibitory activity (IC50 value, 0.11 μg/mL). Apigenin was identified from the active EtOAc fraction and exhibited high AR inhibitory activity (IC50 value, 4.03 μM). The content of apigenin was measured in B. balsamifera (0.47 mg/g) by HPLC/UV analysis. Our result suggests that B. balsamifera could be a useful natural source for the development of a novel AR inhibitory agent against diabetic complications.

关键词： Blumea balsamifera Apigenin Aldose Reductase Inhibition HPLC

Isolation and identification of alkaloids and anthocyanins from flower and bulb of Lycoris radiata using HPLC and LC-ESI-MS

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Journal of Agricultural Chemistry and Environment 2013年第1期2卷 22-26页

作者： Jin-Hyuk Chun In Hyuk Jang Mariadhas Valan Arasu Naif Abdullah Al-Dhabi Veeramuthu Duraipandiyan Dong-Hoon Lee sanghyun Lee Sun-ju Kim Department of Bio-Environmental Chemistry Chungnam National University Daejeon Republic of Korea Department of Botany and Microbiology College of Science King Saud University Riyadh Saudi Arabia Department of Formulation Sungbo Chemicals Co. Ltd. Goyang-si Republic of Korea Department of Integrative Plant Science Chung-Ang University Anseong Republic of Korea Yeonggwang Agricultural Technology Center Yeonggwang-Gun Republic of Korea

Three anthocyanins (cyanidin 3-diglucoside, cyanidin 3-sambubioside and cyanidin 3-glucoside) together with eleven known alkaloids (lycoricidine, hipppeastrine,O-Demethyllycoramin, lycoricidinol, galanthine, lycorine, lycorenine, lycoramine, galanthamine, homolycorine and pretazettine) were identified in the flower and bulb of Lycoris radiata using high-performance liquid chromatography coupled with UV detection and electrospray ionization mass spectrometry. Anthocyanins play a major role in protecting plant’s DNA from the UV spectrum of sunlight and also in attracting insects for the purpose of pollination. Thus, knowledge on the contents and types of anthocyanins of L. radiata will help to evaluate the adaptive evolution of flowers and provide useful information for the ornamental breeding.

关键词： Lycoris radiata Anthocyanins Alkaloids Flower Bulb