시${\cdot}$공간적 고해상도 자동차 배출량 모형의 개발

박성규,김신도,박기학,Park, Seong-Kyu,Kim, Shin-Do,Park, Ki-Hark 한국환경보건학회 2004 한국환경보건학회지 Vol.30 No.3

Traffic represents one of the largest sources of primary air pollutants in urban area. As a consequence, numerous abatement strategies are being pursued to decrease the ambient concentration of pollutants. A characteristics of most of the these strategies is a requirement for accurate data on both the quantity and spatial distribution of emissions to air in the form of an atmospheric emission inventory database. In the case of traffic pollution, such an inventory must be compiled using activity statistics and emission factors for vehicle types. The majority of inventories are compiled using passive data from either surveys or transportation models and by their very nature tend to be out-of-date by the time they are compiled. The study of current trends is towards integrating urban traffic control systems and assessments of the environmental effects of motor vehicles. In this study, a model of vehicle emission calculation by using real-time traffic data was studied. Traffic data, which are required on a street-by-street basis, is obtained from induction loops of traffic control system. It is possible that characteristics of hourly air pollutants emission rates is obtained from hourly traffic volume and speed. An emission rates model is allocated with a high resolution space by using geographic information system (GIS). Vehicle emission model was developed with a high resolution spatial, gridded and hourly emission rates.

Cryptand 21 합성수지를 이용한 금속 이온의 흡착 및 분리에 관한 연구

박성규,김준태 ( Seong Kyu Park,Joon Tae Kim ) 한국공업화학회 1995 공업화학 Vol.6 No.6

1%, 2%, 및 20% 다리결합도의 클로로메틸화된 1,4-디비닐벤젠에 cryptand 21 거대고리 리간드를 치환반응으로 결합시키고, 이들 수지로부터 흡착에 미치는 pH, 수지의 다리결합도 그리고 금속 이온 농도의 영향에 대하여 조사하였다. 금속 이온들은 pH 3 이하에서는 잘 흡착되지 않았으나 pH 4 이상에서는 큰 흡착률을 보였으며 금속 이온들의 흡착 평형시간은 약 2시간 이었다. 한편, 에탄올 매질에서의 흡착선택성은 UO₂^(2+)>Ni^(2+)>Ce^(3+)이었으며 1% 다리결합도의 수지를 충진시킨 컬럼에 흡착시킨 후 용리액으로 pH 2.5 HNO₃을 사용하여 개별 분리가 가능하였다. Resins with cryptand 21 macrocyclic ligand attached to chloromethylated styrene-1,4-divinylbenzene by substitution reaction were prepared and the effect of pH, metal concentration and cross-linkage of the matrix on the adsorption for UO₂^(2+), Ni^(2+) and Ce^(3+) was investigated. The metal ion was not adsorbed on the resins pH range below 3 and above pH 4, fast adsorption behavior was showed. The resin selectivity determined in ethanol matrix was in increasing order UO₂^(2+)>Ni^(2+)>Ce^(3+). In addition, these metal ion could be separated on the column packed with 1% crosslinked resin by pH 2.5 HN₃ as an eluent.

에너지화 옥세탄 유도체의 합성

박성규,박정환,허선아,조성동,조병욱,전용구,Park Seong-Kyu,Park Jeong-Hwan,Heo Seon-Ah,Cho Sung-Dong,Jo Byung-Wook,Cheun Young-Gu 대한화학회 1993 대한화학회지 Vol.37 No.6

에너지 치환기를 갖는 옥세탄 유도체(AMMO, BAMO, NMMO, BNMO)를 합성하였으며, 이들의 수율을 높이고 대량생산을 하기 위하여 조건을 최적화하였다. Oxetane derivatives (AMMO, BAMO, NMMO, BNMO) having energetic substituents were synthesized and characterized in order to improve the production yield and practical scale-up.

주상(酒傷)에 응용되는 성주청간탕(醒酒淸肝湯)이 알코올대사 및 간장애에 미치는 영향

박성규,윤상협,류봉하,류기원,김진성,Park Seong-Kyu,Yoon Sang-Hyub,Ryu Bong-Ha,Ryu Ki-Won,Kim Jin-Sung 대한한방내과학회 2003 大韓韓方內科學會誌 Vol.24 No.1

Objectives : The aim of this study was to investigate effects of the Sungjuchunggan-tang(Xingjiuqinggan-tang), which has been used for alcoholic diseases in Oriental medicine, on alcoholic metabolism and alcoholic liver damage. Methods : We evaluated the activities of alcohol dehydrogenase(ADH)and aldehyde dehydrogenase(ALDH), and measured the levels of AST, ALT, glucose, triglyceride, HDL-cholesterol, LDL-cholesterol and phospholipid in serum of guinea pigs. Results and Conclusions : In this experiment, Sungjuchunggan-tang, Pharbitidis Semen and Puerariae Radix significantly suppressed the activity of ADH which is a precursor enzyme of acetaldehyde. Sungjuchunggan-tang and Pharbitidis Semen significantly suppressed the activity of ALDH, which is a catabolic enzyme, and increased its level. Due to alcohol consumption, level of ALT and AST were significantly reduced. These experimental results suggest that Sungjuchunggan-tang and Pharbitidis Semen inhibit the formation of acetaldehyde in the metabolism of alcohol, and affect the recovery of weakened liver functions caused by alcohol.

A Study on the Transformation of Baicalin or Antibacterial, Antitumor Effect of the Active Ingredients in Scutellariae Radix

박성규,안덕균,우은란,박현미,Park, Seong-Kyu,Ahn, Duk-Kyun,Woo, Eun-Ran,Park, Hyun-Mee The Society of Korean Medicine 1997 대한한의학회지 Vol.18 No.1

Scutellariae Radix has been widely used as oriental herbal medicine for the treatment of bacterial infections in the respiratory or the gastrointestinal tract. In partition experiment for better understanding of herbal medicine with various solvents, baicalein or wogonin have more hydrophobic characteristics than baicalin or wogonoside. Unexpectedly, methylene chloride could extract more for baicalin or wogonoside over other active ingredients. New compound from baicalin is discovered casting frointier area on herbal medicine in the future. Application study with new molecule hydrolyzed from baicalin is on the way for better treatment of the patient against specific disease. The baicalin modified with reaction has been shown weak antibacterial activity against Streptococcus pyogenes 308A and Pseudomonas aeruginosa 1771. The minimum inhibitory concentration (MIC) of the baicalin modified compound against those strains were about $600\;{\mu}g/mL$, respectively. In vitro antitumor experiment, $EC_{50}$ of baicalin modified with reaction was more than $300\;{\mu}g/mL$ and $EC_{50}$ of baicalein was $100\;{\mu}g/mL$. Among these compounds, baicalin exhibited high level of antitumor activity. $EC_{50}$ of baicalin was less than $33.3\;{\mu}g/mL$.

열변형 해석을 이용한 냉장고 수축팽창 소음저감

박성규,김원진,Park, Seong-Kyu,Kim, Won-Jin 한국음향학회 2019 韓國音響學會誌 Vol.38 No.3

본 연구에서는 수축 및 팽창 소음 발생 메커니즘을 분석하고, 냉장고 운전 중에 소음발생 빈도를 줄이기 위한 효과적인 방법을 제안하였다. 냉장고의 수축팽창음 발생 시에 제품의 품질비용 상승에 영향을 주기 때문에 저감이 필요하다. 먼저, 무향실에서 측정된 음압 신호를 이용하여 주파수 스펙트럼 분석을 수행하여 소음의 특성과 발생 빈도를 분석하였다. 둘째, 열변형 해석을 수행하여 소음원의 위치를 예측했다. 분석결과에서 가장 큰 열변형은 냉동실의 왼쪽 내부 케이스의 중간에서 발생하였다. 또한 음원 위치의 가속도 레벨을 평가한 결과, 소음을 발생시키는 내부 부품이 냉동실의 세 번째 선반임을 알 수 있었다. 냉장고의 중앙 ABS(Acrylonitrile Butadiene Styrene) 두께 증가에 의한 열변형 저감을 통하여 수축팽창음을 저감할 수 있는 방법을 제안하였다. In this work, the mechanism of contraction and expansion noise generation is investigated, and effective methods are proposed to reduce the occurrence frequency of noise during operation of the refrigerator. First, the frequency spectrum analysis was made by using the sound pressure signal measured in an anechoic chamber to investigate the characteristic of noise and the frequency of occurrence. Second, a thermal deformation analysis was conducted to predict the location of noise source. It is found from the analysis that the biggest thermal deformation occurs in the middle of the left inner case in the freezer room. Following the investigation made, a noise reduction method is proposed. The method is proposed to reduce the contraction and expansion noise by reducing the thermal deformation through increasing ABS (Acrylonitrile Butadiene Styrene) thickness in the center of refrigerator.

시스 카벤-올레핀 전이금속 착물들의 형태에 대한 이론적 연구

박성규,김일두,김준태,최창진,전용구,Seong-Kyu Park,Ill-Doo Kim,Joon-Tae Kim,Chang-Jin Choi,Young-Gu Cheun 대한화학회 1992 대한화학회지 Vol.36 No.6

카르벤-올레핀-전이금속착물들[$(CO)_4M=CHX(CH_2=CH_2)$] (X: $OCH_3,\;NHCH_3,\;SCH_3$, M: C, Mo, W)의 형태에 대하여 확장된 Huckel 방법으로 계산하여 연구하였다. $d^6$ 전이금속 8면체 착물에서는 두 개의 인자 즉 금속에서 리간드로의 역제공과 리간드-리간드 상호작용이 안정한 형태를 결정해 준다는 사실이 밝혀졌지만 카르벤에 $\pi$-전자를 수용하는 리간드와 $\pi$-전자를 주는 기가 배위되어 있을 때 리간드-리간드 상호작용이 우세하므로 착물이 형태를 결정해 주는 주요한 인자라고 예측된다. The conformations of several carbene-olefin-transition metal complexes[$(CO)_4M$-(CHX)olefin] (X: $OCH_3,\;NHCH_3,\;SCH_3$, M: C, Mo, W) have been studied by means of Extend Huckel calculations. In the case of $d^6$ transition metal octahedral complexes, it is shown that the two main factors which determine the optimal conformation are metal-to-ligand back-donation and direct ligand-ligand interaction at the metal, but the ligand-ligand interaction dominates the situation for a metal that is coordinated to $\pi$ acceptor ligands and to $\pi$ donor group on the carbene. The relative amounts of both factors depend strongly on the electronic nature of the ligands at the metal. The greater electron donating ability of nitrogen stabilizes amino-substituted carbene complexes compared with their alkoxyl substituted analogues. This interaction is optimal when the $\pi$ systems of the carbene and olefin are coplanar. The introduction of the $\pi$ donor group on the carbene carbon increases also the importance of the ligand-ligand interaction.

전이금속의 Carbene 착물에 대한 이론적 연구 (반응성, 전자구조, Diels-Alder 반응)

박성규,김일두,김준태,김성현,최창진,전용구,Park Seong-Kyu,Kim IIl-Doo,Kim Joon Tae,Kim Sung-Hyun,Choi Chang-Jin,Cheun Young Gu 대한화학회 1992 대한화학회지 Vol.36 No.1

크롬이움, 몰리브덴늄, 텅그스텐의 carbene 착물인 $(CO)_5Cr=CCHCH_2(XCH_3)\;,\;(CO)_5Mo=CCHCH_2(XCH_3)\;,\;(CO)_5W=CCHCH_2(XCH_3)$에 대해서 확장된 Huckel 방법으로 계산하여 이들의 전자구조와 반응성 등을 고찰하였다. fragment들의 궤도함수 상관도로부터 M=Ccarb 이중결합의 특성을 알 수 있다. M=Ccarb 이중결합의 ${\sigma}$결합은 carbene의 HOMO로부터 $(CO)_5M$의 LUMO로 전자가 이동하므로 형성되고 ${\pi}$결합은 전이금속의 축퇴된 d${\pi}$ 궤도함수로부터 carbene의 LUMO로 전자가 역이동하므로서 형성된다. M=Ccarb 결합에서 전하분극은 Mo, W-착물에 대해서 M쪽이 더욱 양으로 계산되었다. 화학적 또는 물리적 성질은 carbene 탄소원자의 양전하에 의하여 결정되며 carbene 탄소원자의 친전자적 반응성은 전하에 의해서가 아니라 frontier orbital의 LUMO에 의해서 지배받는다. Electronic structures and reactivities of the chromium, molybdenum, and tungsten carbene complexes, $(CO)_5Cr=CCHCH_2(XCH_3)\;,\;(CO)_5Mo=CCHCH_2(XCH_3)\;, and\;(CO)_5W=CCHCH_2(XCH_3)$, are studied by means of Extended Huckel calculations. The origin of the M=Ccarbene double bond is clarified from the diagram of the orbital correlation with the fragment orbitals. The ${\sigma}$ bond of the M=Ccarbene double bond is formed by the electron transfer interaction from the HOMO of the carbene to the LUMO of the $(CO)_5M$. The ${\pi}$ bond is formed through the back-transfer of electrons from one of the degenerated d${\pi}$ orbitals to the LUMO of the carbene. The polarization of charge of the M=Ccarbene bond is calculated to be M=Ccarbene for Mo, and W carbenes. The chemical and physical properties of these complexes are resulted from an appreciable positive charge on the carbene carbon. The electrophilic reactivity of the carbene carbon is not charge controlled, but is controlled by the frontier orbital, LUMO.

Cryptand 이온교환 수지를 이용한 우라늄(VI) 이온의 흡착

박성규,김준태,Park, Seong-Kyu,Kim, Joon-Tae 한국분석과학회 2004 분석과학 Vol.17 No.2

1%, 2%, 5% 및 10%의 가교도를 가진 스틸렌 디비닐벤젠 공중합체에 1-aza-15-crown-5 거대고리 리간드를 치환반응으로 결합시켜 cryptand 이온교환 수지들을 합성하였다. 이들 수지의 합성은 염소 함량과 원소 분석 그리고 IR-스펙트럼으로 확인하였다. 우라늄 ($UO{_2}^{2+}$) 이온의 흡착에 미치는 pH, 시간, 수지의 가교도 그리고 용매의 유전상수에 따른 영향들을 조사하였다. 우라늄 이온은 pH 3 이상에서 큰 흡착율을 보였으며, 금속 이온들의 흡착 평형은 2시간 정도였다. 한편, 에탄올 용매에서 수지에 대한 흡착 선택성은 우라늄 ($UO{_2}^{2+}$), 마그네슘 ($Mg^{2+}$), 네오디뮴 ($Nd^{3+}$) 이온이었고, 우라늄 이온의 흡착력은 1%, 2%, 5% 및 10%의 가교도순 이었으며, 용매의 유전상수 크기에 반비례하였다. Cryptand ion exchange resins were synthesized with 1-aza-15-crown-5 macrocyclic ligand attached to styrene divinylbenzene (DVB) copolymer with crosslink of 1%, 2%, 5% and 10% by substitution reaction. The synthesis of these resins was confirmed by content of chlorine, element analysis, and IR-spectrum. The effects of pH, time, dielectric constant of solvent and crosslink on adsorption of uranium ($UO{_2}^{2+}$) ion were investigated. The uranium ion was showed fast adsorption on the resins above pH 3. The optimum equilibrium time for adsorption of metallic ions was about two hours. The adsorption selectivity determined in ethanol was in increasing order uranium ($UO{_2}^{2+}$), magnesium ($Mg^{2+}$), neodymium ($Nd^{3+}$) ion. The adsorption was in order of 1%, 2%, 5%, and 10% crosslink resin and adsorption of resin decreased in proportion to order of dielectric constant of solvents.

[화학] Cryptand 이온교환 수지를 이용한 우라늄(Ⅵ) 이온의 흡착

박성규(Seong-Kyu Park),김준태(Joon-Tae Kim) 한국분석과학회 2004 분석과학 Vol.17 No.2