Air fluid analysis with Integrated Blower BLDC structural improvements. Integrated Blower BLDC structure is used for water removal, such as a blowing device, hand dryer, dryer, dehumidifier, car washing machine. The purpose is to remove rainwater and moisture from the umbrella at high pressure and high speed for a short time using the water separator principle. The authors conducted the 1st, 2nd, and 3rd design and experiments to achieve the optimal integrated Blower BLDC structure. In addition, the research paper was verified through simulation, experiments, and prototypes to analyze the wind speed, dehydration rate, and Air Fluid for the structure.

An efficient location management plays an important role in mobile communication networks. In this study, a direction-based location registration (DIR) scheme and its modified scheme called a unidirection-based location registration (uniDIR), both of which adopt a line paging to reduce paging costs, are considered. The problems of the previous performance analysis method for DIR and uniDIR are pointed out, and a new accurate analysis model to properly analyze the correct performance is proposed. Using the new analysis method, the exact performance of DIR and uniDIR is obtained, and the performance comparison results of the two schemes are presented. According to the results of performance analyses in various environments, this study confirms that DIR has better performance than uniDIR in most cases despite the reduction in paging cost.

Seismic data processing software for petroleum exploration usually has commercialized license and is expensive. Though there is the presence of open source software, it is hard for general users to use it since it needs specialized knowledge due to developer-oriented standards. Here, pygbt which is a script-oriented and user-oriented seismic data processing software based on Geobit software, is developed. This is based on Python-2.7.5 and PyQt4. The pygbt consists of the script file editor and the XSV, XSED, and XVA modules. The script file editor makes Geobit job files that have processing parameters. The XSV module plots seismic data, the XSED module shows the attributes of seismic data in graphic mode, and the XVA module serves as a velocity analysis tool. For the performance test of the pybdt, marine seismic field data are applied. Through the parameter analysis of each module, a proper procedure for seismic reflection data in the continental shelf is suggested. The flow of processing data includes amplitude correction, deconvolution, bandpass filtering, CMP sorting, velocity analysis, NMO correction, and stack.

The purpose of this study is to analyze the measurement sensitivity of an acceleration sensor for active noise canceling (ANC) technology. Two-story buildings were designed and the measurement sensitivity of three sensors was analyzed and compared. To investigate the measurement sensitivity of the sensor under the same environment, three sensors were installed at different positions of 0, 0.5, and 1 m, respectively, from the noise source. As a result, the sensor sensitivity of measurement was high when they were placed near the noise source, but the sensitivity decreased as the distance from the noise source increased. The measurement sensitivity of sensors between 0.5 and 1 m was almost similar. To evaluate the measurement sensitivity of sensors according to the attachment method, the adhesion method using the tape and bolts were compared. There was no significant change observed according to the attachment method. Therefore, the distance from the noise source and the sensor type had a more significant impact on the measurement sensitivity of the sensor.

This paper proposes a new type of ultraviolet (UV) sensor coated with Azobenzene polymer material, a functional polymer that has recently been gaining interest in strain gauge equipment. Azovenzene polymers react reversively to ultraviolet rays, transforming the internal structure of the material. It is a technology that measures the change in strain induced by the ultraviolet light to the Azobenzene polymer using an electric strain gauge and detects ultraviolet rays from it. In particular, sensors are designed to determine the direction in which UV rays are introduced.

Bamboo is a plant belonging to the native Gramineae and has long been popular in Korea and other countries. Among the different types of bamboo is Phyllostachys bambusoides, which is useful for a variety of purposes as it possesses useful properties and has a wide range of beneficial uses such as a pulpwood, timbering, and medicinal usages. The bamboo stem contains cellulose and lignin and contains various polyphenol compounds. It has also been reported that bamboo stems have antioxidant and UV-protective activities, especially in the cosmetic application of bamboo stems. However, no research has been conducted on the scalp cosmetics of the Phyllostachys bambusoides. In this study, antioxidant activity and polyphenol content were investigated to inquire the possibility of Phyllostachys bambusoides being a cosmetic material. Total polyphenol content concentration was calculated to be 500 μg/mL, and antioxidant assays (DPPH, ABTS) were performed resulting in the range of 50-900 μg/mL (IC50). All five fractions showed no cytotoxicity up to the concentration of 100 μ g/mL by MTT assay. Therefore, in this study, the antibacterial, antioxidant, and polyphenol contents of domestic bamboo royal extract were analyzed to investigate its potential as a cosmetic material for improving scalp.

Mallotus japonicus, belonging to Euphorbiaceae, has been known to possess various physiological activities such as anti-bacterial, anti-virus, and anti-inflammatory effects. This study was designed to investigate the anti-oxidative activity and anti-tumor effect of the Mallotus japonicus bark extracts with water and ethanol. The amount of total polyphenolic compounds was measured using gallic acid as a standard material. The ethanol extract showed higher contents (143.6±1.57 mg GAE/g) than the water extract (120.4±6.11 mg GAE/g). Based on this result, a modified DPPH assay was conducted for the free radical scavenging activities of water and ethanol extracts. The ethanol extract revealed 80% free radical scavenging activity, compared with the 60% activity of water extract. To identify the qualitative and quantitative analyses of ethanol extract, LC/MS/MS method was applied to 15 standard materials. The result showed the highest contents of bergenin and the existence of other materials except resveratrol and oxyresveratrol. Cytotoxicity test was performed with MTT assay. Whereas the ethanol extract showed no cytotoxicity to 293T of a normal cell, the effects of ethanol extract on Fadu cell (head and neck carcinoma cells) appeared to be toxic in a 125-250 μg/mL range of concentrations. These results imply the value of developing anti-oxidant and anti-tumor agents using the ethanol extract of Mallotus japonicus bark.