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| 1 | Comparative toxicity of silver nanoparticles and silver ions to Escherichia coli显示文摘With the increase in silver(Ag)-based products in our lives, it is essential to test the potential toxicity of silver nanoparticles(Ag NPs) and silver ions(Ag ions) on living organisms under various conditions. Here, we investigated the toxicity of Ag NPs with Ag ions to Escherichia coli K-12 strain under various conditions. We observed that both Ag NPs and Ag ions display antibacterial activities, and that Ag ions had higher toxicity to E. coli K-12 strain than Ag NPs under the same concentrations. To understand the toxicity of Ag NPs at a cellular level, reactive oxygen species(ROS) enzymes were detected for use as antioxidant enzymatic biomarkers. We have also studied the toxicity of Ag NPs and Ag ions under various coexistence conditions including: fixed total concentration, with a varied the ratio of Ag NPs to Ag ions; fixed the Ag NPs concentration and then increased the Ag ions concentration; fixed Ag ions concentration and then increasing the Ag NPs concentration.Exposure to Ag NPs and Ag ions clearly had synergistic toxicity; however, decreased toxicity(for a fixed Ag NPs concentration of 5 mg/L, after increasing the Ag ions concentration) to E. coli K-12 strain. Ag NPs and Ag ions in the presence of L-cysteine accelerated the bacterial cell growth rate, thereby reducing the bioavailability of Ag ions released from Ag NPs under the single and coexistence conditions. Further works are needed to consider this potential for Ag NPs and Ag ions toxicity across a range of environmental conditions.Environmental Significance Statement: As silver nanoparticles(Ag NPs)-based products are being broadly used in commercial industries, an ecotoxicological understanding of the Ag NPs being released into the environment should be further considered. Here, we investigate the comparative toxicity of Ag NPs and silver ions(Ag ions) to Escherichia coli K-12 strain, a representative ecotoxicological bioreporter. This study showed that toxicities of Ag NPs and Ag ions to E. coli K-12 strain display different relationships when existing individually or when coexisting, and in the presence of L-cysteine materials. These findings suggest that the toxicology research of nanomaterials should consider conditions when NPs coexist with and without their bioavailable ions. | Yoojin Choi Hyun-A Kim Kyoung-Woong Kim Byung-Tae Lee | 2018 | Journal of Environmental Sciences2018，30，4： | 5 |
| 2 | Li 0.93 [Li 0.21 Co 0.28 Mn 0.51 ]O 2 nanoparticles for lithium battery cathode material made by cationic exchange from K-birnessite显示文摘 | Yoojin Kim Youngsik Hong Min Gyu Kim Jaephil Cho | 2006 | Electrochemistry Communications2006，，5： | 1 |
| 3 | Brain physiome:A concept bridging in vitro 3D brain models and in silico models for predicting drug toxicity in the brain显示文摘In the last few decades,adverse reactions to pharmaceuticals have been evaluated using 2D in vitro models and animal models.However,with increasing computational power,and as the key drivers of cellular behavior have been identified,in silico models have emerged.These models are time-efficient and cost-effective,but the prediction of adverse reactions to unknown drugs using these models requires relevant experimental input.Accordingly,the physiome concept has emerged to bridge experimental datasets with in silico models.The brain physiome describes the systemic interactions of its components,which are organized into a multilevel hierarchy.Because of the limitations in obtaining experimental data corresponding to each physiome component from 2D in vitro models and animal models,3D in vitro brain models,including brain organoids and brain-on-a-chip,have been developed.In this review,we present the concept of the brain physiome and its hierarchical organization,including cell-and tissue-level organizations.We also summarize recently developed 3D in vitro brain models and link them with the elements of the brain physiome as a guideline for dataset collection.The connection between in vitro 3D brain models and in silico modeling will lead to the establishment of cost-effective and time-efficient in silico models for the prediction of the safety of unknown drugs. | Yoojin Seo Seokyoung Bang Jeongtae Son Dongsup Kim Yong Jeong Pilnam Kim Jihun Yang Joon-Ho Eom Nakwon Choi Hong Nam Kim | 2022 | Bioactive Materials2022，7，7： | 1 |
| 4 | Mucosal imbalance of IL-1 and IL-1 receptor antagonist inirfflammatory bowel disease显示文摘 | VINCENZO C R LORI K YOOJIN T C | 1995 | J Immunol1995，154，： | 1 |
| 5 | Provider–Patient Communication About Adherence to Anti-retroviral Regimens Differs by Patient Race and Ethnicity显示文摘 | M. Barton Laws Yoojin Lee William H. Rogers Mary Catherine Beach Somnath Saha P. Todd Korthuis Victoria Sharp Jonathan Cohn Richard Moore Ira B. Wilson | 2014 | AIDS and Behavior2014，，7： | 1 |
| 6 | Photoacoustic infrared spectroscopy for conducting gas tracer tests and measuring water saturations in landfills显示文摘 | Yoojin Jung Byunghyun Han M. Erfan Mostafid Pei Chiu Ramin Yazdani Paul T. Imhoff | 2011 | Waste Management2011，，： | 1 |
| 7 | Analysis of Competing Technologies and Firms in aConvergence Industry by Using Patent Information: The Case ofTelematics 显示文摘 | Han Yoojin | 2007 | Portland International Conference on Manage-ment of Engineering and Technology2007，，8： | 1 |
| 8 | 公共媒体艺术“波浪”显示文摘“WAVE”是一种公共媒体艺术,表达了逼真的波浪,不断地冲过宽8米,高20米的L形L ED屏幕。城市中的大LED屏幕是一种广告媒体,但具有公益性的特点。设计师希望通过公共媒体为厌倦了新冠肺炎的人们提供安慰。他们选择了一个难以想象的海浪在市中心的场景,那是自然的另一端。为了更加生动地表达,LED广告牌变成了玻璃水箱。变形幻觉技术用于创建逼真的场景,其中三维波浪不断涌入。 | Park Sahnhwa Choi Yoojin Oh Jihoon | 2021 | 设计2021，34，10： | 1 |
| 9 | Applica- tion of ultrasonic system for enhanced sewage sludge disintegration:a comparative study of singleand dualfre- quency 显示文摘 | Yoojin Jung Hyunwoong Ko Byunggil Jung | 2011 | KSCE Journal of Civil Engineering2011，15，5： | 1 |
| 10 | A Simulation Environment for Intrusion Detection System in IEC 61850 Based Substation Automation System显示文摘 | YooJin Kwon Seongho Ju Yonghun Lim | 2013 | Computer Technology and Application2013，4，7： | 0 |
| 11 | Large-signal SPICE model for depletion-type silicon ring modulators显示文摘We present an accurate, easy-to-use large-signal SPICE circuit model for depletion-type silicon ring modulators(Si RMs). Our model includes both the electrical and optical characteristics of the Si RM and consists of circuit elements whose values change depending on modulation voltages. The accuracy of our model is confirmed by comparing the SPICE simulation results of 25 Gb/s non-return-to-zero(NRZ) modulation with the measurement. The model is used for performance optimization of monolithically integrated Si photonic NRZ and pulse-amplitudemodulation 4 transmitters in the standard SPICE circuit design environment. | MINKYU KIM MYUNGJIN SHIN MIN-HYEONG KIM BYUNG-MIN YU YOUNGHYUN KIM YOOJIN BAN STEFAN LISCHKE CHRISTIAN MAI LARS ZIMMERMANN WOO-YOUNG CHOI | 2019 | Photonics Research2019，7，9： | 0 |
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