• 대한화장품학회지
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• 제38권2호
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• pp.189-195
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• 2012

Slim813은 2-사이클로펜텐-1-온 옥심 유도체로서 다양한 염증성 자극원에 대한 TNF 생성을 억제하는 항 자극 및 UV에 의한 MMP1 억제를 통한 항 노화 효능을 갖는 물질이다. 본 연구를 통하여 이와 같은 효능 외에도 완전히 분화된 지방 세포에서 cAMP (cyclic adenosine monophosphate) 생성 촉진을 통한 HSL (hormone sensitive lipase) 활성을 증대시킴으로써 지방분해를 증가시킴을 확인하였다. 또한 Slim813을 사람의 팔과 허벅지 부위에 2주간 도포하였을 때 지방의 두께 감소를 유발하는 것으로 나타나 체내 피하 지방을 분해하는 효능을 갖는 것으로 사료된다.

• Nuclear Engineering and Technology
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• 제52권8호
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• pp.1784-1791
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• 2020

The 14 MeV neutron generator facility is being developed by the Institute for Plasma Research India to conduct the lab scale experiments related to Indian breeding blanket system for ITER and DEMO. It will also be utilized for material testing, shielding experiments and development of fusion diagnostics. Occupational radiation exposure control is necessary for the all kind of nuclear facilities to get the operational licensing from governing authorities and nuclear regulatory bodies. In the same way, the radiation exposure for the 14 MeV neutron generator facility at the occupational worker area and accessible zones for general workers should be under the permissible limit of AERB India. The generator is designed for the yield of 10¹² n/s. The shielding assessment has been made to estimate the radiation dose during the operational time of the neutron generator. The facility has many utilities and constraints like ventilation ducts, accessible doors, accessibility of neutron generator components and to conduct the experiments which make the shielding assessment challenging to provide proper safety for occupational workers and the general public. The neutron and gamma dose rates have been estimated using the MCNP radiation transport code and ENDF -VII nuclear data libraries. The ICRP-74 fluence to dose conversion coefficients has been used for the assessment. The annual radiation exposure has been assessed by considering 500 h per year operational time. The provision of local shield near to neutron generator has been also evaluated to reduce the annual radiation doses. The comprehensive results of radiation shielding capability of neutron generator building and local shield design have been presented in the paper along with detailed maps of radiation field.

• 한국제4기학회지
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• 제16권2호
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• pp.33-38
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• 2002

우리나라 남부지방의 28기 유구의 소토에서 정방위시료를 채취하여 고고지자기 측정법으로 우리나라에서의 과거 지자기 방향을 구하였다. 이 자료의 연대는 A.D. 3∼9세기, A.D. 1317년, A.D. 15∼16세기에 걸쳐있다. A.D. 5∼6세기의 우리나라 지자기 방향은 같은 시기 일본의 지자기 방향과 매우 유사하나, A.D. 3∼4세기의 우리나라 지자기 방향은 같은 시기의 일본의 지자기 방향보다 크게 동쪽으로 편향하고 있었다. 이러한 차이는 A.D. 3∼4 세기경에 우리나라와 일본 부근에 현저한 국가적 지자기 이상이 있었음을 의미한다. A.D. 3∼6세기와 A.D. 7∼9세기의 우리나라 지자기영년변화곡선의 개형이 구해졌으며, 이것을 사용하여 유물이 출토되지 않아 연대를 알 수 없는 유적에서 소토를 이용하여 대략의 연대치를 측정할 수 있다.

• 천문학논총
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• 제27권4호
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• pp.305-310
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• 2012

AKARI's all-sky survey resolves the far-infrared emission in many thousands of nearby galaxies, providing essential local benchmarks against which the evolution of high-redshift populations can be measured. This review presents some recent results in the resolved galaxy populations, covering some well-known nearby targets, as well as samples from major legacy surveys such as the Herschel Reference Survey and the JCMT Nearby Galaxies Survey. This review also discusses the prospects for higher redshifts surveys, including strong gravitational lens clusters and the AKARI NEP field.

• Wind and Structures
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• 제4권1호
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• pp.73-84
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• 2001

Analysis of pressures measured on the roof of the full-scale Texas Tech building and a 1/50 scale model of a typical house showed that the pressure fluctuations on cladding fastener and cladding-truss connection tributary areas have similar characteristics. The probability density functions of pressure fluctuations on these areas are negatively skewed from Gaussian, with pressure peak factors less than -5.5. The fluctuating pressure energy is mostly contained at full-scale frequencies of up to about 0.6 Hz. Pressure coefficients, $C_p$ and local pressure factors, $K_l$ given in the Australian wind load standard AS1170.2 are generally satisfactory, except for some small cladding fastener tributary areas near the edges.

• Steel and Composite Structures
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• 제18권6호
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• pp.1353-1368
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• 2015

A finite element model is presented for the analysis of composite steel-concrete beams based on a refined high-order theory. The employed theory satisfies all the kinematic and stress continuity conditions at the layer interfaces and considers effects of the transverse normal stress and transverse flexibility. The global displacement components, described by polynomial or combinations of polynomial and exponential expressions, are superposed on local ones chosen based on the layerwise or discrete-layer concepts. The present finite model does not need the incorporating any shear correction factor. Moreover, in the present $C^1$-continuous finite element model, the number of unknowns is independent of the number of layers. The proposed finite element model is validated by comparing the present results with those obtained from the three-dimensional (3D) finite element analysis. In addition to correctly predicting the distribution of all stress components of the composite steel-concrete beams, the proposed finite element model is computationally economic.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 춘계학술대회 논문집 전기설비전문위원
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• pp.78-82
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• 2006

The Partial Discharge Monitoring System is technology which is available to measure & analysis the partial discharge of Power equipment. This technology is in the limelight as a pre-forecast system of equipment defect but there are some problems like no protocol standard, layered network management and the limitation of physical size. This paper presents whole system structure includes engineering centers, LN(Logical Node) to apply PDMS for, base-digital substation system, ICE61850 compatible Condition Monitoring &Diagnosis (CMD), Local Unit(LU), Intelligent Electronic Device (IED) for the solution scheme of these limitations.

• 통상정보연구
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• 제9권1호
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• pp.99-117
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• 2007

The purpose of this study is to explore the application sphere of BPM(Business Process Management) to e-trade process using BPM technology and its service architecture in order to expand the usage of e-trade platform which is developing. After close reviewing the current status of trade process, the possibility of BPM application by e-trade process will be analyzed. The result of analysis is that BPM application to local L/C and purchasing confirmation process could be implemented because those processes are very suitable to apply standardized process and can minimize the risk and confusion of users. BPM application to remaining trade process have to be considered by mid-term and long-term project with the reflection of pilot project performance. Also this study suggests a business management model of e-trade process based on BPM technology which is the new IT technology and integrated interface in view of trade community.

• 대한의생명과학회지
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• 제19권3호
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• pp.206-212
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• 2013

The herbal composition Gyeongshingangjeehwan 18 (GGEx18), which is composed of three herbs, Laminaria japonica Aresch (Laminariaceae), Rheum palmatum L. (Polygonaceae), and Ephedra sinica Stapf (Ephedraceae), has been used as an anti-obesity drug in Korean local clinics. Thus, we investigated whether GGEx18 regulates obesity by suppressing appetite in high fat diet-induced obese C57BL/6J mice. Administration of GGEx18 to obese mice for 9 weeks significantly decreased body weight gain, epididymal adipose tissue weight, and food efficiency ratio. GGEx18 also caused a significant decrease in the circulating levels of leptin, which were increased by about 450% in obese control mice compared with normal lean mice. Concomitantly, GGEx18 decreased mRNA levels of a potent appetite-stimulating hormone neuropeptide Y, but increased an appetite-suppressing hormone pro-opiomelanocortin mRNA levels. These results suggest that GGEx18 may prevent obesity through regulating appetite in nutritionally obese mice.

• JSTS:Journal of Semiconductor Technology and Science
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• 제4권1호
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• pp.74-81
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• 2004

We propose a novel scheme to transmit high center frequency RF signals using electroabsorption devices (EADs) as frequency converters at the transmitter and the receiver. In this approach frequency heterodyning is employed for obtaining high center frequency. With the EAD as a detector/mixer at the receiver we demonstrated a smaller conversion loss than that of the conventional modulator/mixer. With EAD as a modulator/mixer at the transmitter and with two heterodyned lasers to generate an optical local oscillator (LO), we demonstrated a large reduction (${\sim}23dB$) in conversion loss, and the transmission is not limited by the optical saturation of the EAD. This transmission scheme has optical single-side-band transmission feature which greatly relieves the fiber dispersion effect.