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Yoo Jin Chun,함성일,San Duk Yang,Arang Rhie,박현석 한국유전체학회 2008 Genomics & informatics Vol.6 No.1
We have released five Java Application Programming Interface (API) packages for viewing three-dimensional structures of proteins from the Protein Data Bank. To this end, the user interface of an earlier version has been refactored in an object-oriented fashion, in which refactoring is the process of changing a software system to improve its internal structure, without altering the external behavior. Various GUI design and features have been provided conveniently thanks to the Model- View-Control (MVC) model, which is an architectural pattern used in software engineering. Availability: The source code and API specification can be downloaded from https://sourceforge.net/projects/j3dpsv/.
LISP-BASED SIMULATION FOR EVALUATING DISK SYSTEM
Yoo, Hae Young,Woo, Jin Woon,Cho, Kyung San 단국대학교 통계문제연구소 1990 數學 및 統計硏究 Vol.17 No.-
This paper presents a Lisp-based, event-driven simulation using the list data structure and object-oriented operation for the evaluation of the disk system design. The list structure in the event driven simulation is effectively managed for the parallel operation of independent disks and dynamically maintained at an optimum length as the simulation progresses. In addition, Lisp can manipulate various types of objects without presenting their types or sizes and object-oriented operations are appropriate for handling flexible specifications in the new design case. With the above Lisp approaches, several architectural alternatives of the disk buffer, multipath and disk interleaving for improving the performance are considered in the simulation. This disk system simulation estimates and interprets the performance of the design, and is utilized for the rule-based design guide which diagnoses, analyzes, and guides the design in order to optimize the design under the given workload and constraints of cost and performance.
In vitro evaluation of a newly produced resin-based endodontic sealer
Song, Yoo-Seok,Choi, Yoorina,Lim, Myung-Jin,Yu, Mi-Kyung,Hong, Chan-Ui,Lee, Kwang-Won,Min, Kyung-San The Korean Academy of Conservative Dentistry 2016 Restorative Dentistry & Endodontics Vol.41 No.3
Objectives: A variety of root canal sealers were recently launched to the market. This study evaluated physicochemical properties, biocompatibility, and sealing ability of a newly launched resin-based sealer (Dia-Proseal, Diadent) compared to the existing root canal sealers (AHplus, Dentsply DeTrey and ADseal, Metabiomed). Materials and Methods: The physicochemical properties of the tested sealers including pH, solubility, dimensional change, and radiopacity were evaluated. Biocompatibility was measured using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. For microleakage test, single-rooted teeth were instrumented, and obturated with gutta-percha and one of the sealers (n = 10). After immersion in 1% methylene blue solution for 2 weeks, the specimens were split longitudinally. Then, the maximum length of staining was measured. Statistical analysis was performed by one-way analysis of variance followed by Tukey test (p = 0.05). Results: Dia-Proseal showed the highest pH value among the tested sealers (p < 0.05). ADseal showed higher dimensional change compared to AHplus and Dia-Proseal (p < 0.05). The solubility values of AHplus and Dia-Proseal were similar, whereas ADseal had the lowest solubility value (p < 0.05). The flow values of sealer in increasing order were AHplus, DiaProseal, and ADseal (p < 0.05). The radiopacity of AHplus was higher than those of ADseal and Dia-Proseal (p < 0.05). The cell viability of the tested materials was statistically similar throughout the experimental period. There were no significant differences in microleakage values among the tested samples. Conclusions: The present study indicates that Dia-Proseal has acceptable physicochemical properties, biocompatibility, and sealing ability.
Jong-San Chang,Vladislav P. Vislovskiy,박상언,Min-Seok Park,Jin S. Yoo,홍도영 대한화학회 2005 Bulletin of the Korean Chemical Society Vol.26 No.11
This work presents that carbon dioxide, which is a main contributor to the global warming effect, could be utilized as a selective oxidant in the oxidative dehydrogenation of ethylbenzene. The dehydrogenation of ethylbenzene over alumina-supported vanadium-antimony oxide catalyst has been studied under different atmospheres such as inert nitrogen, steam, oxygen or carbon dioxide as diluent or oxidant. Among them, the addition of carbon dioxide gave the highest styrene yield (up to 82%) and styrene selectivity (up to 97%) along with stable activity. Carbon dioxide could play a beneficial role of a selective oxidant in the improvement of the catalytic behavior through the oxidative pathway.