• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2018.05a
• /
• pp.58-59
• /
• 2018

In this study, firing experiments were carried out to confirm the foamability of the expansive shale collected from the local area. When expansive shales are subjected to high temperature heat, gas is generated inside and voids are formed. Due to this phenomenon, shale is used as a raw material for lightweight aggregate. Experiments were carried out with different plastic temperature and residence time to find the appropriate plastic temperature for this expansive shale. As a result, the higher the plastic temperature, the more the surface viscosity increased and the gas generated inside were retained. Resulting in a number of internal voids. However, even if the plastic temperature or the medium temperature is high, it is confirmed that sufficient gas is not generated when the residence time is shortened.

• BMB Reports
• /
• v.47 no.12
• /
• pp.655-659
• /
• 2014

Integrin-mediated cell adhesion is important for development, immune responses, hemostasis and wound healing. Integrins also function as signal transducing receptors that can control intracellular pathways that regulate cell survival, proliferation, and cell fate. Conversely, cells can modulate the affinity of integrins for their ligands a process operationally defined as integrin activation. Analysis of activation of integrins has now provided a detailed molecular understanding of this unique form of "inside-out" signal transduction and revealed new paradigms of how transmembrane domains (TMD) can transmit long range allosteric changes in transmembrane proteins. Here, we will review how talin and mediates integrin activation and how the integrin TMD can transmit these inside out signals.

• Proceedings of the Korean Society of Propulsion Engineers Conference
• /
• 2004.03a
• /
• pp.784-788
• /
• 2004

A visualization study of shock formation of the supersonic jet nozzle using a Shadowgraph Method (SM) was carried out to investigate the effect of the longitudinal variation of coaxial pipe end tip position inside the supersonic nozzle. The experiment was performed for the Mach number range from 1.1 to 1.2 at nozzle exit. The well known shock cell structure was shown with the pipe end located deep inside the nozzle for the studied Mach number. With the pipe end approaches nozzle exit, it was found that the shock cell structure disappeared and turned into complex formation. In order to understand the mechanism of the shock structural change, computational simulation was carried out using the Navier-Stokes solver, FLUENT. Topological sketch was added with an aid of the visualization and the numerical simulation.

• Journal of Information Technology Services
• /
• v.2 no.1
• /
• pp.75-83
• /
• 2003

Among EC areas. the B2B EC market is being spotlighted as an important interesting research area considering its size and the potential impact on companeies and the whole society. In comparison with private consumers in B2C EC. business buyers in B2B EC have to precisely keep track of the purchase records. and integrate them with the buyer's e-procurement system, which might have been implemented as a part of integrated ERP (Enterprise Resource Planning) systems. There are three approaches for such integration between ERP and e-marketplace in B2B EC; Two previous approaches are Inside-Out approach and Outside-In approach. And a newly, one is b-cart approach. In this paper, we try to survey these three approaches and make a comparison analysis. From this research. we identify that the b-cart approach is the most efficient framework in integrating ERP with e-marketplace in B2B EC.

• Fire Science and Engineering
• /
• v.30 no.2
• /
• pp.123-132
• /
• 2016

This study is the result of performing structural analysis in accordance with the new ambulance design of inside space using the new vehicle's bodywork. 3D design works were performed based on international standards and designed ambulance. And then it was tested by a shock of 10G to the ambulance car inside with respect to the vehicle body after that we looked into the consequences. At this time, it was carried out in consideration of its own weight and the weight of components according to the EN regulation. From the result of structural analysis, the internal frame and configured handrail in a variety of pipe did not have a relatively large stress load, but internal panel and cabinets has been interpreted to receive a large stress load at least over 50 MPa. When carried out reinforcement design in accordance with this analysis, the modification of thickness and shape could be necessary. On the basis of these findings, it is also expected that there could be a useful information to produce a more secure vehicle for paramedics and patients using a ambulance inside the vehicle.

• Proceedings of the KSME Conference
• /
• 2007.05b
• /
• pp.2506-2511
• /
• 2007

The coupled simulation is performed to find out the interaction of arc plasmas with surrounding materials in a thermal puffer plasma chamber. In order to be more realistic, PTFE nozzle ablation and Cu electrode evaporation, which are caused by high temperature of arc plasmas, are considered together. Pressure rise and temperature inside the chamber generated during the whole arcing history are investigated with the applied currents. It is very important to define how thermal flow and mass transfer are processing between the arc plasma and surrounding materials for further understanding complex physics inside the chamber. It is concluded that the result might be very useful to understand the mechanism happened inside and to design thermal puffer plasma chambers, but further experimental studies are required to verify the results for the more practical applications.

• Journal of the Korea Society of Computer and Information
• /
• v.22 no.4
• /
• pp.51-58
• /
• 2017

Research on the Development of EPUB SCP(Secure Content Protection) Technical Specification and International Standardization has been carried out as a R&D project granted by the Korea Copyright Commission since 2014. The research aims to build a standard framework for the EPUB DRM(Digital Rights Management) based on the Readium LCP(Licensed Content Protection) and KS EPUB DRM specifications, to develop element technologies for the framework, and to standardize it as an IDPF(International Digital Publishing Forum) industrial standard. One of the essential features of the EPUB DRM developed though this study is to support the lending model of the digital library. This paper introduces LSD(License Status Document) specification which is a DRM license management protocol for the digital library lending process, and also represents a model which can automatically test the implemented entities of the LSD specification, test scenarios and test materials.

• Journal of the Korean housing association
• /
• v.17 no.2
• /
• pp.11-18
• /
• 2006

For the more comfortable thermal environment in residential buildings, it was necessary for variable components like as automatic flow limiting valves and/or balancing valves in hydronic system. And, these components had an effect on flow-rate and pressure inside pipe. In this case, the incompatibility between the design for the heating system and the selection of equipment was the causes of several problems in heating pipe network. In this study, we peformed measurements and analyses of flow rate and pressure inside pipe for radiant floor heating in residential buildings through field surveys and experiments in order to find out the actual conditions and problems. On the basis of this, we suggested the approach for the optimal flow-rate and pressure maintaining inside pipe in individual heating system.

• Journal of Microbiology and Biotechnology
• /
• v.10 no.1
• /
• pp.48-50
• /
• 2000

The energetics at the succinate:quinone oxidoreductase segment of V. alginolyticus was studied using a fluorescence quenching technique with inside-out membrane vesicles. A transient generation of the membrane potential (inside-positive) and ${\Delta}pH$ (inside-acidic) occurred in the presence of KCN and succinate when ubiquinone-1 (Q1) was added. The membrane potential (\Delta\psi$) generated by the succinate; quinone oxidoreductase segment was completely collapsed by the protonophore carbonylcyanide m-chlorophenylhydrazone (CCCP) and the membrane permeable anion $SCN^{-}$, whereas the ${\Delta}pH$ was completely collapsed by CCCP and $(NH_4)_2SO_4$. From these results, it was concluded that the succinate: quinone oxidoreductase segment as well as quinol oxidase [1] in the respiratory chain of V. alginolyticus generated $H^{+}$ electrochemical potential.

• Journal of Fisheries and Marine Sciences Education
• /
• v.19 no.3
• /
• pp.383-389
• /
• 2007

To evaluate the performance of heat exchanger with rotating porous plates, the experimental investigation was carried out under various conditions. With an equal interval of 18 mm inside the heat exchanger, the rotating porous plates are mounted. The hot and cold airs enter at opposite ends of heat exchanger and exchange heat each other. In order to measure the temperature distribution of the hot air side inside heat exchanger, the thermocouples are inserted between the plates. The first location of thermocouple is 10 mm downstream from the inlet of heat exchanger, and succeeding ten locations are aligned at an equal interval of 18 mm. As a result of the measurement, the temperature distribution inside heat exchanger was constant as the hot air temperature of inlet is low. It was found that the heat transfer rate does not depend on the variation of RPM at the lower temperature of inlet. The heat transfer rate at the higher temperature of inlet increased a little with the increase in RPM.