Seongchan Kim

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The paper reports a facile one-pot synthesis of core@shell nanoparticles (NPs) composed of Au core and graphene oxide nanocolloid (GON) shell. Unique properties of Au NPs and GON can be incorporated into a single nanohybrid structure to provide desirable functions for theranosis such as localized surface plasmon resonance, Raman scattering, amphiphilic(More)
In recent years, there have been many interests in opinion resources such as online news, blogs, and forums. With this tendency, many opinionrelated applications are proposed to quench an opinion-seeking desire of users. However, selecting publicly interesting opinions is important to improve the effectiveness of such opinion applications, by focusing more(More)
Identifying an opinion target, a primary object of the opinion expression (e.g., the real-world object, event, and abstract entity), is helpful for extracting target-related opinions and detecting user interests. This paper presents a novel framework for target-based opinion analysis, which extracts opinionated sentences and identifies their opinion targets(More)
The multifunctional DNAzyme (Dz) delivery system is developed based on nano-sized graphene oxide (nGO) for simultaneous detection and knockdown of the target gene. The Dz/nGO complex system allowed convenient monitoring of HCV mRNA in living cells and silencing of the HCV gene expression by Dz-mediated catalytic cleavage concurrently.
Four areas in Texas, involving 16 counties, have been designated by the United States Environmental Protection Agency (EPA) as nonattainment areas because ozone levels exceed the National Ambient Air Quality Standard (NAAQS) maximum allowable limits. These areas face severe sanctions if attainment is not reached by 2007. Four additional areas in the state(More)
Photodynamic therapy (PDT) is a noninvasive strategy to treat diseases by light-triggered activation of a photosensitizer (PS). One aim of the recent researches on PDT is to overcome the limitation of conventional PDT by improving selective activation of PS on targeted region. Here, a microRNA (miRNA)-responsive drug activation system is developed which(More)
A new framework combining proactive search with mobile hypertext lets mobile phone users avoid text entry and tailors search results to suit the context. Mobile phones and devices are evolving steadily, adding increasingly advanced capabilities. Today's smart phones, for example, have PClike functionality with complete operating system software that(More)
Computerized presentation slides have become essential for effective business meetings, classroom discussions, and even general events and occasions. With the exploding number of online resources and materials, locating the slides of high quality is a daunting challenge. In this study, we present a new, comprehensive framework of information quality(More)
Tables are ubiquitous in digital libraries and on the Web, utilized to satisfy various types of data delivery and document formatting goals. For example, tables are widely used to present experimental results or statistical data in a condensed fashion in scientific documents. Identifying and organizing tables of different types is an absolutely necessary(More)