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박병윤,허남호,이정재 효성여자대학교 부설 한국환경위생연구소 1991 환경위생연구 Vol.1 No.1
국내산 zeolite의 중금속 제거제로서의 이용가능성을 검정하기 위해 zeolite에 의한 중금속의 흡착능을 조사하였다. Zeolite의 주구성점토광물은 clinoptilolite와 smectite였다. 증금속 ion들의 흡착반응은 45분 이후에 흡착평형에 도달하였다. 이들의 흡착량은 첨가중금속 ion들의농도가 증가할수록 증가하는 경향이었으며 흡착등온선은 Freundlich식에 잘 부합되었다. 치환성 양 ion별 중금속 흡착량은 Na^+ -> K^+ -> Mg^+2 -> Ca^+2 -zeolite의 순으로 1가 양Ion으로포화된 시료가 2가 양Ion으로 포화된 시료보다 더 많은 양의 중금속을 흡착하였다. This study was conducted to examine the adsorption capacity ofheavy metal cations by zeolite for the purpose of investigating the possibilityfor heavy metal cations eliminator of Korean zeolite. The dominant clay minerals of zeolite were clinoptilolite and smectite. The adsorption of heavy metal cations by zeolite reached equilibrium after 45 minutes. The adsorption increased with increasing concentrations of the bulk solution, and it was found that the adsorption isothermal curves conformed to Freundlich's equation. Samples saturated with monovalent cations adsorbed more heavy metal cations than those saturated with divalent cations, and the order of adsorption amounts was Na^+ -> K^+ -> Mg^+2 -> Ca^+2 -saturated samples.
이차성 구순열 비첨부 교정 시 내측 및 외측 하부 비익연골의 동시교정술의 필요성과 효용성
박병윤 대한성형외과학회 2006 Archives of Plastic Surgery Vol.33 No.2
The characteristics of the cleft lip nasal deformity is defined in this article in three planes. The alar flaring is explained in X axis, the lower positioning of the alar free margin is imagined in Y axis and the short hemicolumella is in Z axis.Most cleft surgeons have focused on the malposition of the lateral crus of alar cartilage while the author defined it in X and Y axises and tried to correct that deformity of short hemicolumella in Z axis. For the last 13 years the author applied that method in 818 cases of secondary cleft lip nose deformity.Through the columellar splitting incision extended to free margin of the alar not beyond the nasal dorsum, the skin and soft tissue of the webbing deformed the nasal tip was excised in crescent fashion. The dissected short hemicolumella including the medial crus was thus elevated and advanced into the space of the deformed nasal tip after the crescent excision. This procedure should be followed by the correction of the deformities in X and Y axis.The medial crus elevation is more effective and critical way to have the constant and nice outcome than the lateral crus reposition in secondary cleft lip nasal deformity.
가변풍량제어시스템과 냉복도밀폐시스템의 적용에 의한 데이터센터의 냉방에너지 절감 효과 분석
박병윤,정용호 한국건축친환경설비학회 2013 한국건축친환경설비학회 논문집 Vol.7 No.2
In order to keep the data center server room temperature condition, cooling energy consumption has been rapidly increased as the increasing internal heat gain from the server devices. And the cooling units for server systems are fully operated to satisfy the indoor temperature condition, it results in the excessive energy consumption. There are many wastes of cooling energy which is caused by the structural problems in data center server room. For example, a leakage by the electric cable hole, mixing or recirculation of hot air from the hot aisle to the cold aisle, short circulation of the CRAC(Computer Room Air Conditioning),and others. So there are many strategies to reduce the waste of cooling energy in data center. In this study, cold aisle containment system and variable air volume system were proposed among the various strategies to reduce the energy cosumption. To verify the effectiveness of the energy saving system, test bed which is same with exist server room was set up in IDC(Internet Data Center) building and comparative experiments were carried out in actual conditions. As the result, in case of setting server room temperature 30℃, the server device inlet temperature exceeded 27℃ class 1 condition of the ASHRAE standard. But in case of setting server room temperature below 26℃, the range of inlet temperature of server system was 18~26℃ by cold aisle containment system. In case of variable air volume system and setting server room temperature 26℃, total energy saving was 19.8% to conventional cooling system. After all, variable air volume system and cold aisle containment system were proved to be the effective solution for energy saving cooling system.
Differential Parental Transmission of Markers in BCL3 among Korean Cleft Case-parent Trios
박병윤,박정용,Terri H Beaty,지선하,설재웅 대한예방의학회 2009 예방의학회지 Vol.42 No.1
Objectives : Isolated cleft lip with or without cleft palate (CL/P) is among the most common human birth defects, with a prevalence of approximately 1 in 700 live births. The B-Cell Leukemia/lymphoma 3 (BCL3) gene has been suggested as a candidate gene for CL/P based on association and linkage studies in some populations. This study tests for an association between markers in BCL3 and isolated, non-syndromic CL/P using a case-parent trio design, while considering parent-of-origin effects. Methods : Forty case-parent trios were genotyped for two single nucleotide polymorphisms (SNPs) in the BCL3 gene. We performed a transmission disequilibrium test (TDT) on individual SNPs, and the FAMHAP package was used to estimate haplotype frequencies and to test for excess transmission of multi-SNP haplotypes. Results : The odds ratio for transmission of the minor allele, OR (transmission), was significant for SNP rs8100239 (OR=3.50, p=0.004) and rs2965169 (OR=2.08, p=0.027) when parent-of-origin was not considered. Parentspecific TDT revealed that SNP rs8100239 showed excess maternal transmission. Analysis of haplotypes of rs2965169 and rs8100239 also suggested excess maternal transmission. Conclusions : BCL3 appears to influence risk of CL/P through a parent-of-origin effect with excess maternal transmission.