• Journal of the Society of Cosmetic Scientists of Korea
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• v.19 no.1
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• pp.108-126
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• 1993

The functions of polyoxyethylene tocopheryl ethers [POE(n)TEs] in emulsion, solubilization and gel were studied. For emulsification of liquid paraffin, POE(10)TE showed better emulsifying effect in O/W emulsions than others tested. The effects of oil and polyol content on the formulation of W/O and O/W emulsions were also studied. In O/W emulsion, the viscosity was increased by increasing the liquid paraffin content, at about 70%, and slightly increased by increasing the propylene glycol content, However, in W/O emulsion, the viscosity was decreased by increasing the oil content, and also decreased by increasing the propylene glycol content, For solubilization of perfume oil, POE(18)TE showed better solubilizing effect than the others tested. The gelling effect of POE(n)TEs increased with ethylene oxide chain length up to 50 moles. The gelling property was evaluated for hardness and viscosity.

• Korean Journal of Plant Taxonomy
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• v.38 no.3
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• pp.223-231
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• 2008

This study was undertaken to resolve several systematic issues concerning the distribution, nomenclature, and local name of Wasabia koreana. A careful reexamination of the type specimen of W. koreana in TI as well as critical morphological comparison with the related taxa, Cardamine yezoensis and W. japonica, revealed that the W. japonica specimens from Ulleung Island had long been misidentified as W. koreana, resulting in the usage of the same local name for the two distinct taxa. An detailed review for the Cardamine pseudowasabi, a recently proposed name for the misplaced W. koreana, is provided.

• Journal of Powder Materials
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• v.8 no.1
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• pp.49-54
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• 2001

The synthesis and characteristics of W-Ni-Fe nanocomposite powder by hydrogen reduction of ball milled W-Ni-Fe oxide mixture were investigated. The ball milled oxide mixture was prepared by high energy attrition milling of W blue powder, NiO and $Fe_2O_3$ for 1 h. The structure of the oxide mixture was characteristic of nano porous agglomerate composite powder consisting of nanoscale particles and pores which act as effective removal path of water vapor during hydrogen reduction process. The reduction experiment showed that the reduction reaction starts from NiO, followed by $Fe_2O_3$ and finally W oxide. It was also found that during the reduction process rapid alloying of Ni-Fe yielded the formation of $\gamma$-Ni-Fe. After reduction at 80$0^{\circ}C$ for 1 h, the nano-composite powder of W-4.57Ni-2.34Fe comprising W and $\gamma$-Ni-Fe phases was produced, of which grain size was35nm for W and 87 nm for $\gamma$-Ni-Fe, respectively. Sinterability of the W heavy alloy nanopowder showing full density and sound microstructure under the condition of 147$0^{\circ}C$/20 min is thought to be suitable for raw material for powder injection molding of tungsten heavy alloy.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.11a
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• pp.440-443
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• 2007

본 논문에서는 데스크탑 및 웹 사이트에 분산된 개인 컨텐츠 관리 방법을 제안한다. 웹 2.0 과 웹 어플리케이션에 대한 관심이 높아지면서 다양하고 분산된 개인의 모든 컨텐츠를 통합 관리해 주는 시스템에 대한 요구가 높아지고 있다. 본 논문에서는 다양하고 분산된 개인의 컨텐츠를 데스크탑에서 관리해주고, 이를 개인용 서버를 통하여 웹에서도 이용할 수 있게 해주는 개인 컨텐츠 관리 시스템을 제안한다. YouFree 의 개인 컨텐츠 관리 시스템은 데스크탑과 웹 사이트에 분산된 개인의 컨텐츠를 종류에 관계없이 통합된 모델을 이용해서 관리해주고 사용할 수 있게 해주는 서비스이다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.18 no.6
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• pp.163-168
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• 2018

We developed W-band transceiver module using open MMIC chip such as receiver single chip and transmitting power amplifier. In order to calculate the noise figure and output power value, we analyzed the W-band transition loss from the antenna to MMIC connection and constructed the 12 channel receiver and the 5 channel transmitter. And compared with the results of the measurement. As a result, the output power of the transmitter was similar to the analytical results and the measured results at room temperature and environmental conditions. The noise figure of the receiver was also similar, but some channels showed error of about 3 dB due to manufacturing error.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.11a
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• pp.482-484
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• 2007

YouFree 는 이동형 SW 플랫폼을 기반으로 개인 맞춤형 지식 관리 및 개발 환경을 제공하고자 한다. YouFree 내의 브라우저 기반 SW 실행 엔진은 사용자가 이동한 곳에서 YouFree 가 실행될 수 있도록 이동성을 지원한다. 본 논문에서 제안하는 브라우저 기반 SW 실행 엔진은 설치 시 레지스트리의 변경하지 않으며, 실행을 위해 사용자의 추가적인 구성을 필요로 하지 않는다. 또한, 먼저 실행된 엔진이 존재하더라도 충돌 없이 새로운 엔진을 실행하여 사용자가 편리하게 브라우저 기반 SW 를 사용할 수 있도록 한다. 따라서 사용자는 YouFree 를 이용해 브라우저 기반 SW 를 서비스하거나, 또는 SW 의 개발도구, 개인 컨텐츠 관리 도구로 YouFree 를 이용할 수 있다.

• Journal of Veterinary Clinics
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• v.40 no.1
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• pp.44-49
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• 2023

The purpose of this study was to evaluate body temperature changes in rabbits anesthetized using water-filtered infrared-A (wIRA). Ten rabbits were used for this study. For the experimental group (wIRA group; wG, n = 5), the experimental equipment was used and irradiated using wIRA. The control group (CG, n = 5) did not have any warming device. There were no significant differences in heart rate, respiration rate, and end tidal CO₂ (EtCO₂) between wG and CG. After 80 min, the core body temperature of wG rabbits was significantly higher than that of CG rabbits. The surface body temperature was significantly higher while receiving wIRA support at all time points after 5 min. In conclusion, in rabbits under inhalation anesthesia, the surface body temperature was better maintained than the core body temperature when using wIRA.

• Journal of the Korean Society of Food Science and Nutrition
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• v.40 no.1
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• pp.1-6
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• 2011

This study was conducted to evaluate the antioxidant activity of liquid beni-koji (LBK), 70% ethanol extracts of beni-koji (EEB) and water extract of Hwangki (WEH). The yields of freeze dried powder of LBK, EEB and WEH were 32.17 g/L, 23.61 g/kg and 196.33 g/kg, respectively. Electron donating ability at 1% (w/v) of LBK, EEB and WEH were 82.67%, 15.71% and 8.60%; reducing power (OD700) were 2.06, 1.64 and 0.45, respectively. SOD-like activities were 24.32%, 11.11%, and 17.94%; nitrite scavenging activities were 74.92%, 72.31% and 31.83%, respectively. TBARS (%) were in order of LBK (69.65%)> EEB (67.32%)> WEH (4.42%). Electron donating ability at 1% (w/v) of EEB : WEH (1:1, w/w. EW), LBK : WEH (1:1, w/w. LW), EEB : LBK: WEH (1:1:1, w/w. ELW) were 14.58%, 60.66% and 20.42%; reducing power ($OD_{700}$) were 1.06, 2.01 and 1.71; SOD-like activities were 18.50%, 26.94% and 18.25%, respectively. While nitrite scavenging activities and TBARS (%) of ELW was higher than those of other materials. Total polyphenol content of LBK, EEB, WEH, EW, LW, ELW were 3.98%, 3.61%, 3.02%, 3.23%, 3.46% and 3.38%; total flavonoid content were 0.89%, 3.91%, 0.30%, 2.59%, 0.46% and 2.33%, respectively. In conclusion, this study provides experimental evidence that mixture of LBK, EEB and WEH could be used as a source of antioxidant ingredients in the food industry.

• Journal of Korean Academy of Oral and Maxillofacial Radiology
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• v.15 no.1
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• pp.13-20
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• 1985

The author obtained the oblique lateral trans cranial radiograms from 376 patients (114 of male, and 262 of female) with temporomandibular joint arthrosis. After tracing each film, the author analyzed the dimensional changes of the condylar heads with pain, clicking, mouth opening limitation, and masticatory difficulty respectively, which were the chief complaints of the TMJ arthrosis and compared these data with control group. The results were as follows; 1. There was a great predilection for occurrence of the TMJ arthrosis in female (262 cases) over male (114 cases). But there was no significant difference in ratio between the sexes on each symptom. In male, 60 patients (52.6%) had pain, 28 patients (24.6%) had clicking, 21 patients (18.4%) had mouth opening limitation, and 5 patients (4.4%) had masticatory difficulty. In female, 148 parients (56.5%) had pain, 57 patients (21.8%) had clicking, 47 patients (17.9%) had mouth opening limitation, and 10 patients (3.8%) had masticatory difficulty. 2. Examined controlled group, the author analyzed the dimension of W-W', 0-H, 0-A, 0-B on the right side first, and left side second. In male, the dimension of W-W' was 14.52㎜, 14.13㎜; 0-H was 13.92㎜, 13. 71㎜' 0-A was 8.91㎜, 9.0㎜ and 0-B was 8.67㎜, 8.78㎜. In female, W-W' was 13.77㎜, 13.51㎜; 0-H was 13.42㎜, 13.35㎜; 0-A was 8.92㎜, 9.01㎜; and 0-B was 8.59㎜, 8.80㎜. 3. W-W' and 0-H of the experimental group were distinctly lesser than the controlled group. Male with mouth opening limitation show the least (12.70㎜, 13.00㎜) on W-W', but both sexes with pain show the least on 0-H. There was no significant difference between experimental group with Clicking and controlled group on 0-H, 0-A, and 0-B. And also there was no difference on 0-B in patients with every symptom except masticatory difficulty. The dimensional changes of the condylar heads with those symptoms were as follows; a) In male patients, complaing of pain, W-W' of the right and left was 13.80㎜, 12.80㎜; 0-H was 13.10㎜, 12.90㎜; 0-A was 8.69㎜, 8.18㎜; 0-B was 8.33㎜, 8.42㎜. In female, W-W' was 13.01㎜, 12.90㎜; 0-H was 12.48㎜, 12.80㎜; 0-A was 8.60㎜, 8.49㎜; 0-B was 8.48㎜, 8.50㎜. b) In male patients with clicking, W-W' was 13.70㎜, 13.10㎜; 0-H was 13.90㎜, 13.10㎜; 0-A was 8.81㎜, 8.16㎜ 0-B was 8.34㎜, 8.25㎜. In female, W-W' was 13.10㎜, 13.50㎜; 0-H was 13.30㎜, 12.91㎜; 0-A was 8.95㎜, 8.49㎜; 0-B was 8.23㎜, 8.70㎜. c) In male patients with mouth opening limitation, W-W' was 12.70㎜, 13.00㎜; 0-H was 13.40㎜, 13.40㎜; 0-A was 8.37㎜, 8.48㎜; 0-B was 8.33㎜, 8.62㎜. In female, W-W' was 13.00㎜, 12.50㎜ 0-H was 12.90㎜, 13.10㎜; 0-A was 8.49㎜, 8.09㎜; 0-B was 8.77㎜, 8.01㎜. d) In male patients with masticatory difficulty, W-W' was 13.30㎜, 13.20㎜; 0-H was 13.40㎜, 12.60㎜; 0-A was 8.26㎜, 8.32㎜; 0-B was 7.80㎜, 8.20㎜. In female, W-W' was 12.30㎜, 12.00㎜; 0-H was 13.10㎜, 13.20㎜; 0-A was 8.68㎜, 7.95㎜; 0-B was 7.46㎜, 7.87㎜.

• Honam Mathematical Journal
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• v.27 no.2
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• pp.205-209
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• 2005

In this paper we discuss on the uniquenss of the solution of partial differential equations: (1) $${\frac{{\partial}w}{{\partial}{\bar{z}}}}=F(z,\;w,\;{\frac{{\partial}w}{{\partial}z}}}+G(z,\;w.{\bar{w})$$ in the sobolev space $W_{1,p}(D)$.