• 대한용접접합학회:학술대회논문집
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• 대한용접접합학회 2002년도 Proceedings of the International Welding/Joining Conference-Korea
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• pp.577-582
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• 2002

The solidification cracking susceptibilities of AI-Mg-Si alloy laser welds were assessed using the self-restraint tapered specimen crack test. The cracking susceptibility of 6061 and 6082 Al-Mg-Si alloy laser welds was substantially reduced when the filler wire containing high Si such as Al-12 wt.% Si (4047A) was used. The amount of eutectic was observed to affect the solidification cracking of Al-Mg-Si alloy laser welds. Abundant eutectic seems to heal the cracking and reduces the cracking susceptibility, while an initial increase in eutectic liquid leads to the increased cracking tendency.

• International Journal of Korean Welding Society
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• 제2권2호
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• pp.42-46
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• 2002

The solidification cracking susceptibilities of Al-Mg-Si alloy laser welds were assessed using the self-restraint tapered specimen crack test. The cracking susceptibility of 6061 and 6082 Al-Mg-Si alloy laser welds was substantially reduced when the filler wire containing high Si such as Al-12 wt.% Si (4047A) was used. The amount of eutectic was observed to affect the solidification cracking of Al-Mg-Si alloy laser welds. Abundant eutectic seems to heal the cracking and reduces the cracking susceptibility, while an initial increase in eutectic liquid leads to the increased cracking tendency.

• Asian Pacific Journal of Cancer Prevention
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• 제13권11호
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• pp.5451-5454
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• 2012

Objective: The objective of this study was to evaluate the association of MDR1 gene polymorphisms with susceptibility to hepatocellular carcinoma (HCC). Methods: A total of 689 HCC patients and 680 cancer-free subjects were enrolled. Human MDR1 gene polymorphisms were investigated by created restriction site-polymerase chain reaction (CRS-PCR) and DNA sequencing methods. Multiple logistic regression models were applied to estimate the association between MDR1 gene polymorphisms and susceptibility to HCC. Results: We detected a novel c.4125A>C polymorphism and our findings suggested that this variant was significantly associated with susceptibility to HCC. A significantly increased susceptibility to HCC was noted in the homozygote comparison (CC versus AA: OR=1.621, 95% CI 1.143-2.300, ${\chi}^2$=7.4095, P=0.0065), recessive model (CC versus AC+AA: OR=1.625, 95% CI 1.167-2.264, ${\chi}^2$=8.3544, P=0.0039) and allele contrast (C versus A: OR=1.185, 95% CI 1.011-1.389, ${\chi}^2$=4.4046, P=0.0358). However, no significant increase was observed in the heterozygote comparison (AC versus AA: OR=0.995, 95% CI 0.794-1.248, ${\chi}^2$=0.0017, P=0.9672) and dominant model (CC+AC versus AA: OR=1.106, 95% CI 0.894-1.369, ${\chi}^2$=0.8560, P=0.3549). Conclusions: These findings suggest that the c.4125A>C polymorphism of the MDR1 gene might contribute to susceptibility to HCC in the Chinese population. Further work will be necessary to clarify the relationship between the c.4125A>C polymorphism and susceptibility to HCC on larger populations of diverse ethnicity.

• Journal of Yeungnam Medical Science
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• 제3권1호
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• pp.185-192
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• 1986

1983년 6월부터 1986년 6월까지 영남대학병원 임상검체에서 분리된 세균의 항생제 감수성시험 성적의 통계적 고찰을 시행하여 다음과 같은 결론을 얻었다. 1. Staphylococcus aureus는 cephalothin에 가장 감수성이 높았으며, methicillin에 대한 감수성은 점차 감소되었다. 2. enterococcus를 제외한 Streptococcus는 penicillin에 대체로 높은 감수성을 보였으며, enterococcus는 대부분 ampicillin에만 감수성을 나타내었다. 3. Escherichia coli를 비롯한 그람음성 간균은 전반적으로 amikacin과 tobramycin에 높은 감수성을 보였다. 4. Serratia는 다른 장내세균보다 감수성이 대체로 낮았으며 Serratia marcescens는 amikacin과 chloramphenicol에 가장 높은 감수성을 보였다. 5. Pseudomonas aeruginosa는 amikacin과 tobramycin에 가장 감수성이 높았으며, carbenicillin과 gentamyctn에도 중등도의 감수성을 보였다. 6. Acinetobacter calcoaceticus는 시험한 대부분의 항생제에 낮은 감수성을 보였으며, 1986년에 amikacin, tobramycin 및 gentamycin에 단지 30%정도의 감수성을 보였다.

• 한국미생물·생명공학회지
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• 제16권2호
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• pp.136-141
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• 1988

고온 발효성인 Saccharomyces cerevisiae D-71과 내삼투압성인 Zygosaccharomyces rouxii SR-S를 여러 조건에서 배양하여 Zymolyase-20T에 대한 감수성을 조사하였다. Sacch. cerevisiae D-71의 glucan과 mannan 함량은 각각 l4.5%와 14.8% 이었고 Zygosacch. rouxii SR-S는 24.0%와 19.0% 이었다. 0.5% methionine 과 0,1% glucose를 함유한 wickerham 합성배지에 Sacch. cerevisiae D-71를 배양하여 얻은 세포의 Zymolyase-20T에 대한 감수성은 66% 이었고 $K_2$HPO$_4$와 aminobenzoic acid를 결핍시켰을 때 감수성이 가장 낮았다. 또한 0.5% peptone과 o.15% methionine 및 0.1% glucose를 함유한 wickerham 합성배지에 Zygosacch. rouxii SR-S를 배양하여 얻은 세포의 감수성은 80% 이었고 KI와 pyridoxine을 결핍시켰을 때 감수성이 가장 낮았다. $25^{\circ}C$에서 YMPG 배지에 Sacch. cerevisiae D-71를 접종하여 12시간 정치배양한 세포의 Zymolyase-20T에 대한 감수성은 76% 이었고 Zygosacch. reuxii SR-S를 같은 조건으로 30시간 배양한 세포의 감수성은 82%로서 wickerham 합성배지에서의 감수성보다 더 좋았다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2002년도 가을 학술발표회 논문집
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• pp.499-506
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• 2002

The purpose of this study is to develop landslide susceptibility analysis techniques using artificial neural networks and to apply the newly developed techniques for assessment of landslide susceptibility to the study area of Yongin in Korea. Landslide locations were identified in the study area from interpretation of aerial Photographs and field survey data, and a spatial database of the topography, soil type and timber cover were constructed. The landslide-related factors such as topographic slope, topographic curvature, soil texture, soil drainage, soil effective thickness, timber age, and timber diameter were extracted from the spatial database. Using those factors, landslide susceptibility and weights of each factor were analyzed by two artificial neural network methods. In the first method, the landslide susceptibility index was calculated by the back propagation method, which is a type of artificial neural network method. Then, the susceptibility map was made with a GIS program. The results of the landslide susceptibility analysis were verified using landslide location data. The verification results show satisfactory agreement between the susceptibility index and existing landslide location data. In the second method, weights of each factor were determinated. The weights, relative importance of each factor, were calculated using importance-free characteristics method of artificial neural networks.

• Nuclear Engineering and Technology
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• 제51권4호
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• pp.1032-1036
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• 2019

When the equipment which is related to safety or important to power production is installed in nuclear power plant units (NPPs), verification of equipment Electromagnetic Susceptibility (EMS) must be performed. The low-frequency radiated magnetic field susceptibility (RS101) test is one of the EMS tests specified in U.S NRC (Nuclear Regulatory Commission) Regulatory Guide (RG) 1.180 revision 1. The RS101 test verifies the ability of equipment installed in close proximity to sources of large radiated magnetic fields to withstand them. However, RG 1.180 revision 1 allows for an exemption of the low-frequency radiated magnetic susceptibility (RS101) test if the safety-related equipment will not be installed in areas with strong sources of magnetic fields. There is no specific exemption criterion in RG 1.180 revision 1. EPRI TR-102323 revision 4 specifically provides a guide that the low-frequency radiated magnetic field susceptibility (RS101) test can be conservatively exempted for equipment installed at least 1 m away from the sources of large magnetic fields (>300 A/m). But there is no exemption criterion for equipment installed within 1 m of the sources of smaller magnetic fields (<300 A/m). Since some types of equipment radiating magnetic flux are often installed near safety related equipment in an electrical equipment room (EER) and main control room (MCR), the RS101 test exemption criterion needs to be reasonably defined for the cases of installation within 1 m. There is also insufficient data regarding the strength of magnetic fields that can be used in NPPs. In order to ensure confidence in the RS101 test exemption criterion, we measured the strength of low-frequency radiated magnetic fields by distance. This study is expected to provide an insight into the RS101 test exemption criterion that meets the RG 1.180 revision 1. It also provides a margin analysis that can be used to mitigate the influence of low-frequency radiated magnetic field sources in NPPs.

• 대한조선학회논문집
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• 제60권1호
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• pp.57-64
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• 2023

Recently, the increased use of anti-ship guided missiles, a weapon system that detects and attacks targets in naval engagement, has come to pose a major threat to the survivability of ships. In order to improve the survivability of ships in response to such anti-ship guided missiles, many studies of means to counteract them have been conducted in militarily advanced countries. The integrated survivability of a ship can be largely divided into susceptibility, vulnerability, and recoverability, and is expressed as the conditional probability, if the ship is hit, of damage and recovery. However, as research on susceptibility is a major military secret of each country, access to it is very limited and there are few publicly available data. Therefore, in this study, a possibility of estimating the susceptibility of ships using an anti-air defense system corresponding to anti-ship guided missiles was reviewed. To this, scenarios during engagement, weapon systems mounted to counter threats, and maximum detection/battle range according to the operational situation of the defense weapon system were defined. In addition, the effectiveness of the anti-air defense system and susceptibility was calculated based on the performance of the weapon system, the crew's ability to operate the weapon system, and the detection probability of the detection/defense system. To evaluate the susceptibility estimation feasibility, the sensitivity of the detailed variables was reviewed, and the usefulness of the established process was confirmed through sensitivity analysis.

• 한국생물물리학회:학술대회논문집
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• 한국생물물리학회 2002년도 제9회 학술 발표회 프로그램과 논문초록
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• pp.16-17
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• 2002

The major histocompatibility complex (MHC) is an important susceptibility locus for many human autoimmune diseases. The structural and functional properties of HLA-DR molecules that are associated with susceptibility to several autoimmune diseases, such as rheumatoid arthritis and multiple sclerosis, have been defined.(omitted)

• 한국지반환경공학회 논문집
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• 제18권2호
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• pp.21-27
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• 2017

In order to evaluate landslide susceptibility in Yanbian region, this study analyzed 7 factors related to landslide occurrence, such as soil, geology, land use, slope, slope aspect, fault and river by Analytic Hierarchy Process (AHP), and calculated the weights of these 7 hazard-induced factors, determined the internal weights and the relative weights between various factors. According to these weights, combining the Remote Sensing technology (RS) with Geographic Information System technology (GIS), the selected area was evaluated by using GIS raster data analysis function, then landslide susceptibility chart was mapped out. The comprehensive analysis of AHP and GIS showed that there has unstable area with the potential risk of sliding in the research area. The result of landslide susceptibility agrees well with the historical landslides, which proves the accuracy of adopted methods and hazard-induced factors.