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- 저자 : Eunju Lee (검색결과 719 건)
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Lee, Byung Yang,Seo, Sung Min,Lee, Dong Joon,Lee, Minbaek,Lee, Joohyung,Cheon, Jun-Ho,Cho, Eunju,Lee, Hyunjoong,Chung, In-Young,Park, Young June,Kim, Suhwan,Hong, Seunghun Royal Society of Chemistry 2010 Lab on a chip Vol.10 No.7
<P>We developed a carbon nanotube (CNT)-based biosensor <I>system</I>-<I>on</I>-<I>a</I>-<I>chip</I> (SoC) for the detection of a neurotransmitter. Here, 64 CNT-based sensors were integrated with silicon-based signal processing circuits in a single chip, which was made possible by combining several technological breakthroughs such as <I>efficient signal processing</I>, <I>uniform CNT networks</I>, and <I>biocompatible functionalization of CNT</I>-<I>based sensors</I>. The chip was utilized to detect glutamate, a neurotransmitter, where ammonia, a byproduct of the enzymatic reaction of glutamate and glutamate oxidase on CNT-based sensors, modulated the conductance signals to the CNT-based sensors. This is a major technological advancement in the integration of CNT-based sensors with microelectronics, and this chip can be readily integrated with larger scale lab-on-a-chip (LoC) systems for various applications such as LoC systems for neural networks.</P> <P>Graphic Abstract</P><P>Uniform arrays of carbon nanotube (CNT)-based biosensors were integrated with CMOS signal-processing circuits into a CNT-biosensor system-on-a-chip (SoC) for the detection of glutamate, a neurotransmitter. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=b916975j'> </P>
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Modified Aloe Polysaccharide Restores Chronic Stress-Induced Immunosuppression in Mice
Lee, Youngjoo,Im, Sun-A,Kim, Jiyeon,Lee, Sungwon,Kwon, Junghak,Lee, Heetae,Kong, Hyunseok,Song, Youngcheon,Shin, Eunju,Do, Seon-Gil,Lee, Chong-Kil,Kim, Kyungjae MDPI 2016 INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES Vol.17 No.10
<P>Chronic stress generally experienced in our daily lives; is known to augment disease vulnerability by suppressing the host immune system. In the present study; the effect of modified Aloe polysaccharide (MAP) on chronic stress-induced immunosuppression was studied; this Aloe compound was characterized in our earlier study. Mice were orally administered with MAP for 24 days and exposed to electric foot shock (EFS; duration; 3 min; interval; 10 s; intensity; 2 mA) for 17 days. The stress-related immunosuppression and restorative effect of MAP were then analyzed by measuring various immunological parameters. MAP treatment alleviated lymphoid atrophy and body weight loss. The numbers of lymphocyte subsets were significantly normalized in MAP-treated mice. Oral administration of MAP also restored the proliferative activities of lymphocytes; ovalbumin (OVA)-specific T cell proliferation; antibody production; and the cell killing activity of cytotoxic T lymphocytes. In summary; oral administration of MAP ameliorated chronic EFS stress-induced immunosuppression.</P>
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Sooyeon Lee,Miah Lee,Eunju Ko,Sangwon Lee 글로벌지식마케팅경영학회 2014 Global Marketing Conference Vol.2014 No.6
According to the development of information technology (IT) and new media, customers’ needs have changed to seek not only high quality goods but also a differentiated service in retail stores (Lee & Shin, 2011). For this reason, fashion retail stores started to provide an interesting service by setting up an IT machine or a gadget in the stores. Thereby, customers can get the information or have a special experience while they shop fashion goods. IT shopping service is defined as using technology in retail stores to enhance interaction between retailers and customers. Retailers have tried several types of IT shopping services, which offer information or experience with a high or low level of technology. Informative IT shopping service provides various and useful information, which is related to each product such as size, color, contents, stock, location and fashion styling. Retailers use experiential IT shopping service as an emotional appeal that gives direct experience to customers in some way or other such as watching or acting in a virtual situation. Also, as technology develops, IT shopping services are embodied with diverse technology that are simple or complexity. Some are easy to use with one button and shows 2D images only, but some have a lot of contents such as video clips, SNS share service, showing 3D images, and implementing augment reality. We saw customer responses on the attributes of IT shopping service (informative vs. experimental) x technology level of IT shopping service (high vs. low) x fashion innovativeness/technology innovativeness (high vs. low) This study aims to see the effect of the attributes of IT shopping service and the level of technology on procedure satisfaction and outcome satisfaction, and the moderating effect of perceived enjoyment and perceived complexity. Furthermore, this study will see whether these effects affect visit intention. In this study, the experimental design was adopted as the main methodology, and a total of four stimuli types were selected: 1) informative x high technology 2) informative x low technology 3) experiential x high technology 4) experiential x low technology. The common element, which all types of stimuli have, is a digital touch screen since it is a general equipment nowadays, and the common fashion good for all types is a black blazer. The type of informative service only has the information (size range, color assortment, contents, stock) about selected fashion good with its image. High technology in informative service shows the image with 3D simulation that can help to see 360º of the blazer, and styling tips including a video clip. Moreover, it helps to share the information with friends via SNS. Low technology in informative service only shows a front side of the blazer and presents a store map for customers to find a product they want to try. The types of experiential service draw customer participation providing a picture of customers that are trying on clothes. Experiential service use augment reality (AR) as a high technology and take the back side of customers picture as low technology. For the manipulation check, 18 graduate students in total viewed for each type, and the total sample comprises 387 college students via survey instrument. All hypotheses were tested using AMOS and SPSS 18.0. The main findings of this study are as follows: depending on type of the attributes of IT shopping service and the level of technology affect perceived enjoyment and perceived complexity differently, and there were significant mediating effect of perceived variables toward IT shopping service on procedure satisfaction, outcome satisfaction, and visit intention. Implications for usefulness and role of the IT shopping service in fashion retail stores are provided. And also, limitation of this study and future study are suggested.
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Sooyeon Lee,Miah Lee,Eunju Ko,Sangwon Lee 글로벌지식마케팅경영학회 2014 Global Marketing Conference Vol.2014 No.7
According to the development of information technology (IT) and new media, customers’ needs have changed to seek not only high quality goods but also a differentiated service in retail stores (Lee & Shin, 2011). For this reason, fashion retail stores started to provide an interesting service by setting up an IT machine or a gadget in the stores. Thereby, customers can get the information or have a special experience while they shop fashion goods. IT shopping service is defined as using technology in retail stores to enhance interaction between retailers and customers. Retailers have tried several types of IT shopping services, which offer information or experience with a high or low level of technology. Informative IT shopping service provides various and useful information, which is related to each product such as size, color, contents, stock, location and fashion styling. Retailers use experiential IT shopping service as an emotional appeal that gives direct experience to customers in some way or other such as watching or acting in a virtual situation. Also, as technology develops, IT shopping services are embodied with diverse technology that are simple or complexity. Some are easy to use with one button and shows 2D images only, but some have a lot of contents such as video clips, SNS share service, showing 3D images, and implementing augment reality. We saw customer responses on the attributes of IT shopping service (informative vs. experimental) x technology level of IT shopping service (high vs. low) x fashion innovativeness/technology innovativeness (high vs. low) This study aims to see the effect of the attributes of IT shopping service and the level of technology on procedure satisfaction and outcome satisfaction, and the moderating effect of perceived enjoyment and perceived complexity. Furthermore, this study will see whether these effects affect visit intention. In this study, the experimental design was adopted as the main methodology, and a total of four stimuli types were selected: 1) informative x high technology 2) informative x low technology 3) experiential x high technology 4) experiential x low technology. The common element, which all types of stimuli have, is a digital touch screen since it is a general equipment nowadays, and the common fashion good for all types is a black blazer. The type of informative service only has the information (size range, color assortment, contents, stock) about selected fashion good with its image. High technology in informative service shows the image with 3D simulation that can help to see 360° of the blazer, and styling tips including a video clip. Moreover, it helps to share the information with friends via SNS. Low technology in informative service only shows a front side of the blazer and presents a store map for customers to find a product they want to try. The types of experiential service draw customer participation providing a picture of customers that are trying on clothes. Experiential service use augment reality (AR) as a high technology and take the back side of customers picture as low technology. For the manipulation check, 18 graduate students in total viewed for each type, and the total sample comprises 387 college students via survey instrument. All hypotheses were tested using AMOS and SPSS 18.0. The main findings of this study are as follows: depending on type of the attributes of IT shopping service and the level of technology affect perceived enjoyment and perceived complexity differently, and there were significant mediating effect of perceived variables toward IT shopping service on procedure satisfaction, outcome satisfaction, and visit intention. Implications for usefulness and role of the IT shopping service in fashion retail stores are provided. And also, limitation of this study and future study are suggested.
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Su-Nam Lee,Ji- Heui Lee,Eunju Lee,Ji-Yeon Lee,Jong-il Kim,Youbin Son 대한마취통증의학회 2012 Korean Journal of Anesthesiology Vol.63 No.4
Endoscopic thyroidectomy is gaining popularity, but it can increase the risk of certain complications. Carbon dioxide insufflation in the neck may cause adverse effects on hemodynamic and ventilatory aspects. We report the anesthetic course and complications that were encountered during endoscopic thyroidectomy. Although the surgery was successful, the patient developed signs of hypercarbia, subcutaneous emphysema and pneumothorax.
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Lee Dong Hwan,Lee Jihyang,Kim Eunju,Woo Kyeongyoon,Park Hak Youle,An Jihyun 대한마취통증의학회 2020 Korean Journal of Anesthesiology Vol.73 No.4
Background: Since the first case of severe acute respiratory syndrome Coronavirus-2 (SARS-CoV-2) occurred in Wuhan in December 2019, the virus has spread globally. The World Health Organization declared the virus outbreak a pandemic on March 11, 2020. On January 19, 2020, a 35-year-old woman who returned from China was confirmed as the first SARS-CoV-2 infected case in Korea. Since then, it has spread all over Korea. Case: We report the first case of a SARS-CoV-2 positive woman delivering a baby through cesarean section at 37+6 weeks of pregnancy in the Republic of Korea. Conclusions: This case suggested that negative pressure operating room, skillful medical team, and enhanced personal protective equipment including N95 masks, surgical cap, double gown, double gloves, shoe covers, and powered air- purifying respirator are required at the hospital for safe delivery in such a case.
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Performance Analysis of the Asymmetric Dual-Hop Relay Transmission With Mixed RF/FSO Links
Eunju Lee,Jaedon Park,Dongsoo Han,Giwan Yoon IEEE 2011 IEEE photonics technology letters Vol.23 No.21
<P>This letter reports a performance analysis of a dual-hop relay system composed of asymmetric radio-frequency and free-space optics (RF/FSO) links. This approach is based on the fact that FSO links can provide even wider bandwidths as compared to RF ones. In particular, an exact closed-form expression for the end-to-end outage probability of the RF/FSO relay links is derived. Overall, the RF/FSO links show a slightly worse performance than the RF/RF links, but the performance gap is gradually reduced as the signal-to-noise ratio (SNR) increases. Our mathematical analysis results were verified by exactly matching Monte Carlo simulation results.</P>
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