• Proceedings of the Korean Society of Marine Engineers Conference
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• 2000.05a
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• pp.237-239
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• 2000

• Journal of Sensor Science and Technology
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• v.14 no.1
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• pp.52-55
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• 2005

Ni oxide thin films with thermal sensitivity superior to Pt and Ni thin films were formed through annealing treatment after Ni thin films were deposited by a r.f. magnetron sputtering method. Resistivity values of Ni oxide thin films were in the range of $10.5{\mu}{\Omega}cm$ to $2.84{\times}10^{4}{\mu}{\Omega}cm$ according to the degree of Ni oxidation. Also temperature coefficient of resistance(TCR) values of Ni oxide thin films depended on the degree of Ni oxidation from 2,188 ppm/$^{\circ}C$ to 5,630 ppm/$^{\circ}C$ in the temperature range of $0{\sim}150^{\circ}C$. Because of the high linear TCR and resistivity characteristics, Ni oxide thin films exhibit much higher sensitivity to flow and temperature changes than pure Ni thin films and Pt thin films.

• Proceedings of KOSOMES biannual meeting
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• 2017.11a
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• pp.37-37
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• 2017

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2004.07a
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• pp.139-139
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• 2004

• Journal of the Korean Applied Science and Technology
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• v.37 no.6
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• pp.1627-1634
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• 2020

In this study, water-based acrylic adhesives as copolymers with acrylic acid, 2-hydroxyethyl acrylate were synthesized using ethyl acrylate, 2-ethylhexyl acrylate, and lauryl methacrylate as the main monomers. Prepared water-based acrylic adhesive was compared to physical properties such as solid content, average particle size distribution, initial adhesive force, maximum adhesive force, peel strength, and heat resistance.

• Applied Chemistry for Engineering
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• v.30 no.2
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• pp.241-246
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• 2019

In this paper, reactive surfactants were synthesized by using acrylic acid or 3-butenoic acid as nonionic surfactants, polyoxyethylene(23) lauryl ether (Brij 35) and polyoxyethylene(20) stearyl ether (Brij S20). The synthesis of surfactants was confirmed by FT-IR and $^1H$-NMR. The surface tension, emulsifying property, and foam power and stability were also measured. The surface tension value was 35~41 dyne/cm at an critical micelle concentration (cmc) which was measured as $1.0{\times}10^{-4}{\sim}9.7{\times}10^{-5}mol/L$ using a surface tension method. The emulsifying power of synthesized surfactant was measured with benzene, soybean oil and monomer. Also, the initial height of the bubbles and the height after 5 minutes were measured and the values were compared with each other.

• Proceedings of the KIEE Conference
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• 2003.07d
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• pp.2684-2686
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• 2003

공장, 상용 빌딩, 선박 등의 작업장 내에서 생산성, 품질, 에너지, 안전사고 등의 제반요소들을 종합 관리할 수 있는 개별 센서 및 종합시스템을 개발하였다. 개발된 시스템 사양은 다음과 같다. 입력전압:$12{\sim}24V$, 스캔 간격:100kHz, 펄스 채널: 8, 여기 채널: 8, 여기전압: ${\pm}5000mV$, 입력임피던스: $2.5G{\Omega}$, 사용온도: $-25{\sim}50^{\circ}C$.

• Korean Architects
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• s.521
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• pp.52-59
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• 2012

• Journal of Sensor Science and Technology
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• v.14 no.1
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• pp.56-61
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• 2005

This paper present characteristics of chromium oxide thin-film as piezoresistive sensors, which were deposited on Si substrates by DC reactive magnetron sputtering in an argon-Oxide atmosphere for high temperature applications. The chemical composition, physical and electrical properties and thermal stability ranges of the $CrO_{x}$ sensing elements have studied. $CrO_{x}$ thin films with a linear gauge factor(GF${\fallingdotseq}$15), high electrical resistivity (${\rho}$ = $340{\mu}{\Omega}cm$) and TCR<-55 ppm/$^{\circ}C$ have been obtained. These $CrO_{x}$ thin films may allow high temperature pressure sensor miniaturization to be achieved.

• Preventive Nutrition and Food Science
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• v.17 no.1
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• pp.87-91
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• 2012

Three oat cultivars and one oat breeding line were evaluated for chemical, hydration and pasting properties. Protein, starch and ${\beta}$-glucan levels ranged 11.13~14.37, 56.37~64.86 and 3.44~4.76%, respectively. The oat cultivars Daeyang and Seonyang contained higher ${\beta}$-glucan levels of 4.76 and 4.35%. The Daeyang variety had a higher water absorption index (WAI) of 2.83~3.35 (g/g), but a lower water solubility index (WSI) of 8.67~11.08%. Daeyang and Seonyang cultivars showed higher peak and trough viscosity, but lower breakdown and setback, indicating that they easily swell, and thus could possibly provide the desirable viscosity of an oat product. The ${\beta}$-glucan levels were correlated positively with WAI, peak and trough viscosity, and negatively to WSI, breakdown and setback viscosity.