• 대한치과보철학회:학술대회논문집
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• 2002.04a
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• pp.66-66
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• 2002

• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2000.05a
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• pp.106-106
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• 2000

• Journal of the Mineralogical Society of Korea
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• v.22 no.2
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• pp.97-106
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• 2009

It is known that the natural amethyst is changed to citrine after heat treatment. However, when all amethyst samples from Zambia were heat-treated in the temperature range of $350{\sim}380^{\circ}C$ for 1 hour, the result was that five out of eight samples were changed to citrine and all the rest of samples became rock crystal quartz. These differences in the color appearance seem to be influenced by the original colors contained in the amethyst before the heat treatment. The amethyst containing yellow color changed to citrine and the amethyst without containing yellow color changed to rock crystal quartz after the heat treatment. The results compared after the instrumental analysis on the difference of color change, it showed the differences of peak intensity in 3,400 $cm^{-1}$ and the existence and non-existence of peak at the range of 5,200${\sim}$5,400 $cm^{-1}$ in FTIR. It revealed the difference in the quantity of Cr which is a trace element in the WD-XRF analysis. The identical result in the FTIR spectra before and after the heat treatment reveals that the heat treatment did not cause any change in the main composing elements or crystal structure.

• Proceedings of KOSOMES biannual meeting
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• 2009.06a
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• pp.163-163
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• 2009

• Journal of the Korean Crystal Growth and Crystal Technology
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• v.13 no.1
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• pp.41-45
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• 2003

Infrared spectroscopy is a powerful tool for gem identification and research. Therefore, this study was focused to a method of the identification of amethyst, citrine, rock quartz and jadeite by the FT-IR. The FT-IR measurement was very effective in judgement of amethyst, citrine and rock quartz whether they are natural and synthetic. And FT-IR was very useful for the distinguishment of the natural jadeite (A-Jade) from wax/polymer-impregnated jadeite (B-Jade). Such technique will be helpful to identify new challenges present by treatments and synthetics.

• Proceedings of the Korean Information Science Society Conference
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• 2006.06a
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• pp.325-327
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• 2006

현재 사용되고 있는 운영체제들은 그들의 기능을 확장하거나 교체하기 위해서 kernel extension을 사용해 왔다. 일반적으로 이러한 kernel extension들은 커널과 같은 주소공간에서 실행하기 때문에, 그것에서 발생하는 오류(fault)로 인해 전체 시스템이 망가지는 결과를 초래할 위험이 있다. 그래서 kernel extension의 안전한 실행에 관한 연구들은 kernel extension에서 발생한 오류를 전체 시스템으로부터 고립시키는 것이 주목적이었다. 하지만 이러한 방법들은 kernel extension의 어셈블리어로 된 코드를 분석하거나 사용하고 있는 커널의 소스 코드를 수정을 필요로 한다. 본 논문은 Sentry라는 kernel extension을 감시하기 위한 인터포지션 서비스를 제안한다. Sentry를 사용하기 위해서 별도의 커널 코드를 수정할 필요도 없으며, 이미 사용하고 있는 리눅스와 호환될 수 있는 특징을 지니고 있다. 그리고 kernel extension의 소스코드 및 어셈블리 코드에 대한 분석 없이 바이너리 파일을 직접 수정하여 kernel extension을 모니터링 할 수 있도록 한다. 게다가 Sentry는 재구성이 가능하기 때문에 얼마든지 kernel extension에 대한 보호정책을 동적으로 바꿀 수 있다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.8 no.6
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• pp.1194-1203
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• 2004

The RR protocole, proposed in IETF mip6 WG and standardized by RFC 3775 at lune 2004, send a message 'Binding Update' that express MN's location information to CN safety and update location information. Standard RR protocole has some problems with initiating the protocol by the MN; it causes to increases in communication load in the home network, to increases communication delay between MN and CN. Also, is connoting vulnerability to against attacker who are on the path between CN and HA in security aspect. This paper proposes doing to delegate MN's location information update rights by HA new location information update method. That is, When update MN's location information to HA, Using MN's private key signed location information certificate use and this certificate using method that HA uses MN's location information at update to CN be. It decreases the route optimization overhead by reducing the number of messages as well as the using location information update time. Also, remove security weakness about against attacker who are on the path between CN and HA.

• Clinical and Experimental Reproductive Medicine
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• v.36 no.4
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• pp.249-254
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• 2009

Objective: The aim of this study was to compare the fertilization and cleavage rates of human in vitro matured oocytes after fertilized by conventional in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI). Methods: A total of 135 GV stage oocytes were obtained from 59 women who received ovarian stimulation and IVF during Jan 2007 to Oct 2008. Ovarian hyperstimulation was performed using hMG or recombinant FSH with GnRH antagonist and then ovulation triggered by recombinant hCG. The immature oocytes obtained from stimulation cycles were cultured in IVM medium up to 48 hrs; commercial medium supplemented with rFSH 75 mIU/mL, rhCG 0.5 IU/mL and rEGF 10 ng/mL. The in vitro matured oocytes were fertilized by conventional IVF (41 GV oocytes) or ICSI method (94 GV oocytes). Results: Maturation rate were 51.2% and 59.6% in conventional IVF group and ICSI group, respectively. There was no significant difference in fertilization rates between two groups; 71.4% and 80.4%, respectively. The cleavage rate was also similar in two groups. Conclusion: The presented data suggest that conventional IVF has comparable fertilization and cleavage potential compared with ICSI as the insemination method of immature human oocytes obtained from stimulated cycle.

• Journal of dental hygiene science
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• v.11 no.2
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• pp.63-67
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• 2011

This study aimed to propose appropriate methods of statistical analysis and interpretation of survey results in dental hygiene. By using examples of published articles in the Journal of Dental Hygiene Science from 2003 to 2008, we made some suggestions to improve scientific and clear writing of the contents; purpose of the study, subjects and methods, statistical analysis, tables, and interpretations.

• Journal of the East Asian Society of Dietary Life
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• v.21 no.4
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• pp.520-525
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• 2011

This experiment was conducted to evaluate the quality characteristics of soybean Dasik containing different amounts of Hovenia dulcis Thunb. extract, and the results were as follows. In general components, the contents of moisture and crude protein increased with an increased amount of Hovenia dulcis Thunb. extract, whereas the crude fat content showed a tendency to decrease. The ash content was, however, not significantly different. In chromacity, the value of L, lightness, constantly decreased with an increase in the amount of added extract, whereas the a and b values increased. The hardness and gumminess decreased with an increase in the amount of extract added, whereas the springiness, cohesiveness, and chewiness increased. In sensory evaluation, the Dasik added with 20% of Hovenia dulcis Thunb. extract showed the highest score, and was evaluated as the best formulation for overall acceptability.