• Science of Emotion and Sensibility
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• v.13 no.3
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• pp.467-474
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• 2010

Recently, Study of functional clothing for Vital sensing is focused on reducing artifact by human motions, in order to enhance the electrocardiogram(ECG) sensing accuracy. In this study, considering the factors for each element found from the analysis, a 3-lead electrode inside textile embroidered with silver yarn was developed, and draft designs off our types of vital-signal sensing garments, which are 'chest-belt typed' garment, 'cross-typed' garment 'x-typed' garment and 'curved x-typed' garment, were prepared. The draft designs were implemented on a sleeveless male shirt made of an elastic material so that the garment and the electrodes can remain closely attached along the contour of the human body, and the acquired data was sent to the main computer over a wireless network. In order to evaluate the effects caused by body movements and the ECG-sensing capability for each type in static and dynamic states, displacements were measured from one and two dimensional perspectives. ECG measurement evaluation was also performed for Signal-to-noise ratio(SNR) analysis. Applying the experimental results, the draft garment designs were modified and complemented to produce two types of modular approaches 'continuous-attached' and 'insertion-detached' for the ECG-sensing smart clothing.

• Korean Journal of Plant Tissue Culture
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• v.22 no.1
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• pp.47-51
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• 1995

This study was conducted to investigate the possibility of obtaining platelets via somatic embryogenesis as a means of in vivo mass propagation in Paeonia lactiflora Pall.. When cultured on MS medium with 0.5 mg/L 2, 4-D, filament explants formed calli. UPon transfer to basal medium the calli gave rise to somatic embryos at a frequency of 38%. Additional of 3g/L activated charcoal enhanced the frequency to 60%. Mature embryos preheated at 5$^{\circ}C$ for 2 weeks had 37% germination on medium with 0.3 mg/L GA$_3$. The germinated embryos developed to complete plantlet when cultured on medium with 2mg/L BA.

• Korean Journal of Applied Biomechanics
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• v.12 no.2
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• pp.207-214
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• 2002

The purpose of this study was to examine the putter head movement during the putting strokes. Highly skilled 5 golfers(less than 3 handicaps) and 5 novice golfers(having no golf experience) participated in this study. A target distance was 3 m. Movements of the putter head were recorded at 60 Hz with two video cameras(1/500 shutter speed). The results showed that the angle of the clubface of expert golfers was almost 1 degree, but the novice golfers were more than 6 degrees. Expert golfers moved their hands faster than the head movement, therefore the clubface was not opened during impact. However, the novice golfers moved their hands slower than the head movement, therefore the clubface was opened during impact. The ratio of input and output angles of total movement was 1:3-4, however, the ratio of input and output angles of impact zone was 1:2. The angle of normal vector of expert golfers was less than the angle of normal vector of novice golfers.

• Journal of Soil and Groundwater Environment
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• v.12 no.2
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• pp.37-46
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• 2007

This study developed composition-plastic media with woodchips and plastic as main materials, and examined the performance of media. Compared to the existing commercial media, the media had similar performance in removal efficiency and microbes attaching characteristic, and was evaluated that they are distinguished from economic side. Performance test of media was conducted to examine the removal capacity of toluene and hydrogen sulfide in a gas stream by using a lab-scale biotrickling filter systems packed with them. At a volumetric loading of $1.5\;m^3/hr$ with inlet concentration 260 ppm and empty bed residence time (EBRT) 42s, the toluene removal efficiency was shown over 90%, and the maximum elimination capacity of toluene in the biotrickling filter was $77g/m^3{\cdot}hr$. Effective co-treatments of $H_2S$ and Toluene were observed in the lab-scale biotrickling filters. The maximum elimination capacity of $H_2S$ was $100\;g-S/m^3{\cdot}hr$. Up to 100 ppm, the concentration of $H_2S$ did not have an effect on toluene removal efficiency, but the removal efficiency of toluene decreased with increasing inlet $H_2S$ concentration.

• Journal of the Mineralogical Society of Korea
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• v.21 no.3
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• pp.283-287
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• 2008

The imogolite synthesis wore performed by using tetraethoxysilane (TEOS) and aluminium-sec-butoxide (ASB) at < $100^{\circ}C$. A mixure of TEOS and ASB in a molar ratio of 1:2 was prepared under vigorous stirring and the experiments were performed under the hydrothemal refluxing condition. When the concentration of TEOS and ASB in solution was 0.5 M, a well-crystallized imogolite was synthesized, and the reflections wore shown at d = 22.4, $9.5\;\AA$ etc., after XRD analysis. DTA analysis shows 2 exothemal peaks at 68 and $249^{\circ}C$, suggesting the dehydration and the dehyroxylation reaction, respectively. The result of TG indicates 41% weight loss. And the weak and unsymmetrical peaks by the Si-O-Al stretching vibrations at 953 and $993cm^{-1}$ and by O-Si-O bending vibration at $562cm^{-1}$ were observed after IR analysis. The synthetic imogolite was fibrous and shows a spiders web like network structure.

• Korean Journal of Microbiology
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• v.37 no.3
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• pp.197-203
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• 2001

An ubiquitous bacterium, Pseudomonar cepacia KH410 was isolated from fresh water plant root and identified. Adsorption of heavy metals of lead, cadmium and copper by this strain was investigated. Optimal conditions foradsorption was 1.0 dry g-biomass, at pH 4.0 and temperature of $40^{\circ}C$. Adsorption equilibrium reached max-imum after 120 min in 1000 mg/l metal solutions. The adsorption capacity (K) of lead was 5.6 times higher thancadmium and 4.0 times higher than that of copper. Adsorption of lead was applicable for Langmuir modelwhereas Freundlich model for cadmium and copper, respectively. Adsorption strength (1/n) of heavy metal ionswere in the order of lead>copper>cadmium. Uptake capacity of lead, cadmium and copper by dried cell was83.2,42.0,65.2 mg/g-biomass, respectively. Effective desorption was induced 0.1 M HCI for lead and 0.1 $HNO_3$ for cadmium and copper. Pretreatment to increase ion strength was the most effective with 0.1 M KOH.Uptake by immobilized cell was 77.8,58.5,71.2 mg/g-biomass for lead, cadmium and copper, respectively. Theimmobilized cell was more effective than ion exchange resin on removal of heavy metals in solution containinglight metals.

• Culinary science and hospitality research
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• v.17 no.3
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• pp.132-140
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• 2011

The objective of this study is to evaluate the quality characteristics of turmeric powder Dasik, a Korean traditional cookie, prepared by different additions of turmeric powder(0%, 1%, 2%, 3%, 4%). The result of the study is as follows. As the level of turmeric powder in the formulation increased, the moisture contents of the samples increased. As the content of the turmeric powder increased, the L-values of the turmeric powder Dasik significantly decreased, and the a- and b-values also significantly increased. Also, the hardness, gumminess, springiness, cohesiveness and chewiness of the turmeric powder Dasik increased, whereas its adhesiveness decreased as the amount of turmeric powder increased. The sensory evaluation results showed that the 2% turmeric powder sample showed the highest preference scores; therefore, the 2% turmeric powder Dasik prepared with 98g of flour, 2g of turmeric powder, and 80g of honey was chosen as the most preferred product. It is expected that the development of Dasik added with functional food such as turmeric powder can influence the use of turmeric and increase the consumption of Korean traditional cookies.

• Culinary science and hospitality research
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• v.17 no.3
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• pp.181-190
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• 2011

This study analyzed the quality characteristics of the Sansapyun products, which were manufactured by mixing with 0, 5, 10, 20, and 30% of Crataegi fructus concentrate and 9% of mung bean starch. The moisture content and pH in Sansapyun decreased significantly(p<0.001) as the concentration of Crataegi fructus concentrate increased. Sweetness increased as the amount of Crataegi fructus concentrate increased in both Before/After cases. As for the L value of the color characteristics of Sansapyun, it turned out that the control group, which had 0% of Crataegi fructus concentrate, was higher. Meanwhile, the a and b values were the strongest with 30% of Crataegi fructus concentrate. As the concentration increased, the hardness, springiness, chewiness, gumminess, cohesiveness all decreased significantly(p<0.001), while adhesiveness became higher as the concentration increased. The preference test showed that the increase of the concentration resulted in the increase of red color, fruity flavor, sour flavor, Chinese (herb) medicine flavor, sour taste, sweetness, Chinese (herb) medicine taste, stickiness, and aftertaste. However, the sleekness, transparency, hardness and springiness decreased as the concentration increased. The survey on the preference showed that the preferences for flavor, taste and overall preference were the highest at the 10% sample group, but the preferences for color and texture were the highest at the 20% sample group.

• Korean Journal of Poultry Science
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• v.38 no.3
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• pp.197-204
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• 2011

To investigate the effects of Cordyceps ochraceostromat, silkworm cocoon and conjugated linoleic acid (CLA) addition on the quality of cremi during storage, this study was conducted. Cremis were prepared using a 20% spent layer breast recovered protein to replace Alaska pollack with the addition of 0.1% silkworm cocoon powder (T1), 0.05% silkworm cocoon powder + 0.05% Cordyceps ochraceostromat powder (T2), and 0.05% silkworm cocoon powder + 0.05% CLA. All manufactured cremis were vacuum-packaged, stored at $10{\pm}1^{\circ}C$ and finally evaluated for their quality on 0, 2, 4 and 6 weeks of storage. The pH, whiteness, gel strength and breaking force of cremis from T2 were higher than those of samples derived from either T1 or T3. However, cremis from T2 showed low shear force values when compared to other cremis (p<0.05). Therefore, the results indicate that cremis contained 0.05% silkworm cocoon powder and 0.05% Cordyceps ochraceostromat combination (T2) may be recommendable to induce customers to buy, thereby, it may be beneficial to both manufacturers and consumers in market.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.3
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• pp.1356-1366
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• 2011

The TPM(Trusted Platform Module) is a hardware chip to support a trusted computing environment. A rightful user needs a command authorization process in order to use principal TPM commands. To get command authorization from TPM chip, the user should perform the OIAP(Object-Independent Authorization Protocol) or OSAP(Object-Specific Authorization Protocol). Recently, Chen and Ryan alerted the vulnerability of insider attack on TPM command authorization protocol in multi-user environment and presented a countermeasure protocol SKAP(Session Key Authorization Protocol). In this paper, we simulated the possibility of insider attack on OSAP authorization protocol in real PC environment adopted a TPM chip. Furthermore, we proposed a novel countermeasure to defeat this insider attack and improve SKAP's disadvantages such as change of command suructures and need of symmetric key encryption algorithm. Our proposed protocol can prevent from insider attack by modifying of only OSAP command structure and adding of RSA encryption on user and decryption on TPM.