• Proceedings of the KIEE Conference
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• 2003.07e
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• pp.132-134
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• 2003

Insulator that is used in electric power equipment superannuation and being damaged disorder can. Such as defected insulator has repair or change must because defective influence in electrical equipment. There are many method developed for detecting the defected insulators, analyzed various test of devide voltage, electric field, ultrasonic and discharge pulse. But methods of detecting ultrasonic of discharge, electric field or leakage current could not application in the field, In this paper, we compare the advantage and the limitation of the method to detect defected insulator, and wish proposed using corona camera.

• Korean journal of applied entomology
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• v.34 no.2
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• pp.132-139
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• 1995

The present work was dealt with the twelve species of orbatid mites from leaves, stems and stubbles of rice( Oryza sativa L). Among them six species, that is, Protoribates agricola, Scheloribates decarinatus, Scheloribates oryzae, Sacculozets filosus, Punctoribates manzanoensis, and Paralamellobates ceylanica are new ones in Korea. The other species are Epilohmannia palida pacifica, Podorbates cuspidatus, Tricogaulumna nipponica, Peloribate sp., Scheloribates sp., Galumna sp.

• Proceedings of the Korea Electromagnetic Engineering Society Conference
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• 2001.11a
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• pp.132-135
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• 2001

본 논문에서는 SAR를 저감시킬 수 있는 IMT-2000 단말기용 PIFA의 설계에 대한 내용을 다루었다. 안테나의 설계 파라미터에 따른 공진 특성을 분석하고, PIFA와 동일한 공진 주파수를 갖는 모노폴 안테나와 Side-mounted PIFA를 설계하여 공진 특성과 SAR를 비교\ulcorner분석하였다. 그 결과 중심주파수에서 PIFA의 대역폭은 213MHz로 Side-mounted PIFA보다 50MHz로 증가하였고, 모노폴 안테나와 비교시에는 87MHz정도 감소하였다. 또한, 1g 및 10g SAR 평균 첨두치는 PIFA가 0.9869, 0.453 으로 Side-mounted PIFA, 모노폴 안테나에 비해 각각 10.3 %, 50% 감소하였다.

• Journal of the Korean Magnetic Resonance Society
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• v.4 no.2
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• pp.125-132
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• 2000

The detailed $^1$H and $^{13}$ C NMR assignments of a novel sucrose isovaleryl ester isolated from the seed of Euphorbia Lathyris L., were achieved by one-and two-dimensional techniques. The new sucrose ester was characterized as an $\alpha$-D-glucopyranoside, 3,4,6-tris-O-(3-methyl-1-oxobutyl)-$\beta$-D-fructofuranosyl, 2,6-bis(3-methylbutanoate); sucrose 4,7,8,11,12-pentaisovalerate by MS and NMR experiments.

• Journal of Veterinary Clinics
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• v.7 no.1
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• pp.371-380
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• 1990

This experiment was performed to investigate the electrocardiographic changes in experimentally induced hypocalcemia and hypercalcemia in Korean black goats by dosing with 5% disodiumethylene diamine tetraacetic acid at 0.07$m\ell$/kg body weight/min and 10% Ca-borog-luconate at 0.075 $m\ell$/kg body weight/min, respectively. the result were summarized as follows： Heart rate, S-T segment and Q-Tc interval at 3.23 ${\pm}$ 0.10mEq/L plasma calcium level(hypocalcemia) were increased to 100${\pm}$10.5 rate/min, 132 ${\pm}$10msec and 510${\pm}$40msec, respectively. Heart rate, S-T segment and Q-T interval at 6.89${\pm}$0.23mEq/L plasma calcium level(hypercalcemia) were decreased to 73.2${\pm}$5.16 rate/min, 87${\pm}$10msec and 372${\pm}$30msec, respectively. The degree of changes of the heart rate, S-T segment and Q-Tc interval at low plasma calcium level was higher than those at high plasma calcium level.

• Korean Journal of Crystallography
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• v.11 no.3
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• pp.147-150
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• 2000

The complex [CuL}Cl₂·3H₂O(1)(L=2,13-bis(2-hydroxyethyl)-5,16-dimethyl-2,6,13,17-tetraazatricyclo[14,4,0/sup 1.18/,0/sup 7.12/] docosane) has been synthesized and characterized by X-ray crystallography. 1. crystallized in the monoclinic, space group C2/c, with a=21.647(6)Å, b=8.549(1)Å, c=18.132(5)Å, β=118.58(2)°, V=2946.8(12)ų, Z=4, R₁(wR₂) for 2374observed reflections of [I>2σ(I)] was 0.052(0.187). The centrosymmetric complex 1 has an axially elongated octahedral geometry with four secondary and tertially amines of the macrocycle and tow oxygen atoms of the pendant hydroxyethyl groups.

• Bulletin of the Korean Chemical Society
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• v.34 no.1
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• pp.128-132
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• 2013

L-Arginine semi-oxalate (LASO) single crystal has been grown by solution growth technique at room temperature. The crystal structure and lattice parameters were determined for the grown crystal by single crystal X-ray diffraction studies. Photoluminescence studies confirm the violet fluorescence emission peak at 395 nm. Optical constants like band gap, refractive index, reflectance, extinction coefficient and electric susceptibility were determined from UV-VIS-NIR spectrum. The dielectric constant, dielectric loss and ac conductivity of the compound were calculated at different temperatures and frequencies to analyze the electrical properties. The solid state parameters such as plasma energy, Penn gap, Fermi energy and polarizability were calculated to analyze second harmonic generation (SHG). Nonlinear optical property was discussed to confirm the SHG efficiency of the grown crystal.

• Natural Product Sciences
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• v.8 no.4
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• pp.129-132
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• 2002

The MeOH extract of the twig of Morus alba L. (Moraceae) inhibited strong lipid peroxidation activity. In order to find out active principle from the plant, acivity-guided fractionation was performed and five antioxidant compounds were isolated. Their chemical structures were identified as 6-geranylapigenin (1), 6-geranylnorartocarpetin (2), resveratrol (3), oxyresveratrol (4) and quercetin (5) by physicochemical and spectrometric methods. Compounds 1-5 significantly inhibited lipid peroxidation in rat brain homogenate $(IC_{50}\;values\;of\;3.37,\;3.74,\;0.23,\;0.29\;and\;0.06\; {\mu}M,\;respectively)$.

• International conference on construction engineering and project management
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• 2005.10a
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• pp.892-896
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• 2005

This paper collected 132 schools reconstruction projects in central Taiwan, which received the most serious damage from the Chi-Chi Earthquake. Regression analysis was implemented to build the prediction model of the cost and the duration for the collected projects. It is found that the cubic regression models are capable for predicting the cost and the duration of the projects contracted by the central agency of which the contracting awarding approach was based on the most advantageous tendering (MAT) approach. On the other hand, power regression models are capable for predicting the cost and the duration of the projects contracted through the low bid tendering (LBT) approach. It is also found that the performance of the regression prediction model differs in accordance with organizations that contracted the reconstruction projects.

• Journal of Veterinary Clinics
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• v.21 no.3
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• pp.264-269
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• 2004

A retrospective analysis was performed with 270 cases of canine urolithiasis examined at Laboratory of Clinical Pathology, College of Veterinary Medicine, Seoul Nat'l University in the period between January 2001 and December 2003. The Shih-Tzu (64 cases), Yorkshire terrier (60 cases), miniature schnauzer (41 cases) and maltese terrier (36 cases) had higher incidences than other breeds. Canine urolithiasis occurred from 4 months to 15 years of age, but the most prevalent age was 3 years. Mean age was $5.68\pm3.14$ years. The major mineral component. of calculi was struvite (54.1%) and calcium oxalate (30.4%). There was no sex prevalences: male 131 cases, female 132 cases. The most prevalent anatomic locations of calculi were urinary bladder (53 of 131 cases), urethra (24 of 131 cases) and bladder/urethra (45 of 131 cases) in males and urinary bladder (103 of 132 Cases) in females. The major mineral component of calculi in urinary bladder was struvite (102 of 160 cases), and that in urethra (13 of 25 cases) and multiple locations (29 of 62 cases) was calcium oxalate: The major components of calculi were not always consistent with the components which could be expected from urine pH and crystals. So it is suggested that the components of the calculi must be analyzed after surgical removal to prevent the recurrence when the calculi could not be dissolved by diets or urine pH modifiers.