이산화탄소 분해용 페라이트 담지 다공성 세라믹 섬유복합체 제조와 물성

이봉수,김명수,최승철,오재희,이재춘,Lee, Bong-Soo,Kim, Myung-Soo,Choi, Seung-Chul,Oh, Jae-Hee,Lee, Jae-Chun 한국세라믹학회 2002 한국세라믹학회지 Vol.39 No.8

대기중에 방출되는 이산화탄소 저감을 위해서 산소결핍 페라이트를 이용한 이산화탄소의 탄소 전환에 대한 연구가 이루어지고 있다. 본 연구에서는 우레아 분해를 이용한 균일침전법에 의해 Ni 페라이트 $Ni_{0.4}Fe_{2.6}O_4$를 다공성 세라믹섬유 지지체(지름 50mm, 두께 10mm)에 in-situ 하게 담지하였다. 페라이트를 다공성 세라믹섬유 지지체에 담지하는 방법이 이산화탄소 분해효율에 미치는 영향을 조사하였다. 페라이트가 담지된 시편으로부터 잔류 염소이온과 우레아를 제거하면 주 결정상으로 스피넬 구조의 페라이트를 얻을 수 있었으나 이산화탄소 분해효율이 크게 향상되지는 않았다. 페라이트가 중량 분율로 20% (1g) 담지된 다공성 세라믹섬유 복합체 시편의 경우, 초기 3분 까지는 100% 이산화탄소 분해효율을 나타내었으나 10분 경과 후에는 급격하게 감소하였다. 이산화탄소 분해효율 감쇄 특성시간은 약 3∼7분 사이로 나타났다. The decomposition and/or conversion of carbon dioxide to carbon have been studied using oxygen-deficient ferrites for the reduction of $CO_2$ emission to the atmosphere. In this work, the homogeneous precipitation method using urea decomposition was employed to induce in situ precipitation of Ni ferrite($Ni_{0.4}Fe_{2.6}O_4$) on the porous ceramic fiber support (50 mm diameter${\times}$10 mm thickness). Effects of ferrite loading conditions on the CO2 decomposition efficiency were discussed in this paper. Removal of residual chloride ions and urea by solvent exchange from the porous media after ferrite deposition apparently helps to form spinel ferrite, but does not increase the efficiency of $CO_2$ decomposition. Porous ceramic fiber composites containing 20 wt% (1g) ferrite samples showed 100% efficiency for $CO_2$decomposition during the first three minutes, but the efficiency decreased rapidly after the elapsed time of ten minutes. The characteristic reduction time for the $CO_2$ decomposition efficiency was estimated as about 3∼7 min.

침엽형질상으로 본 한국산 해송집단의 (海松集團) 변이

이봉수,이강영,임경빈 ( Bong Soo Lee,Kang Young Lee,Kyong Bin Yim ) 한국산림과학회 1984 한국산림과학회지 Vol.63 No.1

The attempts in this study were made to evaluate the variations in some needle characteristics of Pinus thunbergii between individual trees within population, between populations and between the hypothesized climatic districts. This species occurs naturally along 1:he southern seacoast of Korea penninsula having a relatively mild maritime climate. The followings are the summarized results. The coefficients of variation of the needle volume and needle serration density were generally higher than those of any other traits studied. The significant differences of variations of needle cross section form factor between individual trees within population at 1% level, except only the Young gwang population, were affirmed. In the case of the eastern seacoast district, where the three study populations are included, significances of variation differences were calculated, 5%r level at needle serration density and cross section area and 1% Level at needle volume. The very high significant difference of the variations of needle cross section form factor and needle longitudinal form factor were shown between population of the western seacoast district and 5% Level significance at needle volume in the southern seacoast district. The high significant differences between districts in respect to needle cross section form factor and cross section area were calculated. The Duncan`s multiple range test showed the dissimilarity of the said characteristics between the hypothesized climatic districts. Summing up the results obtained so far, individual tree and population variations were markedly noted statistically and these may be extended to the silvicultural technology.

스파이로파이란에 의한 표면 개질 및 자외선에 의해 유도된 표면 전위에 대한 분석

이봉수,한동근,손태일,정영환,Lee, Bong-Soo,Han, Dong-Keun,Son, Tae-Il,Jung, Young-Hwan 대한화학회 2011 대한화학회지 Vol.55 No.3

스파이로파이란이 함유된 물질은 자외선의 조사(irradiation)에 의해 메로시아닌 파생물로 변화되는데 이 물질은 페놀레이트 음이온과 아민 양이온으로 구성된 쌍극성(zwitterion) 이온을 가지고 있다. 이와 같은 메로시아닌 표면위에서 페놀레이트 음이온과 니켈 금속 양이온의 복합화는 표면 전하의 변화를 일으키며, 이를 Kelvin prove force microscopy (KFM)를 이용하여 측정하였다. 자외선 노출 시간에 따라 쌍극성 이온의 발생량의 정도가 달라지고, 이것을 표면 전위를 통해서 금속 이온을 매개로 간접적으로 측정할 수 있었으며 표면 전위는 자외선 노출시간이 증가함에 따라 선형적으로 감소하다가 결국 포화상태가 됨을 관측하였다. 또한 자외선 노출 시간이 증가함에 따라 니켈 이온의 부착된 양이 증가되는 결과를 XPS 방법을 사용하여 분석할 수 있었다. 이러한 성질은 다른 금속 이온의 검출 및 양적 분석을 위해 이용될 수 있을 것으로 생각되며, 금속이온과 결합 가능한 단백질이나 세포와 같은 생체물질을 양적 변화를 표면 전하량에 따라 제어할 수 있는 가능성을 제시하였다. 지금까지의 결과를 바탕으로 고선택성, 고감도를 가지고, 생체 물질의 정량적인 제어가 가능한 지지체 혹은 바이오칩을 만들 수 있을 것으로 예상한다. Merocyanine derivatives transformed from spiropyran-containing compounds by irradiating the light of ultraviolet (UV) include zwitterion of phenolate anion and amine cation. Complexation of this phenolate anion on merocyaninemodified surface and Ni ion among metal ions led to a change of surface charge and it was measured with kelvin prove force microscopy (KFM). We found that the resultant surface potential decreased linearly as UV-exposed time increased, and finally were saturated. Also it was analyzed through XPS the immobilized amount of Ni ions was increased according to increase of UV-exposed time. It is considered that these properties could be applied for detection and a quantitative control of different metal ions. Further research is to aim construct specific scaffold/matrix which enable high selective, high sensitive and, especially, a quantitative immobilization of metal ions-binding biomaterials such as proteins and cells.

마우스 수정란의 체외배양 및 동결보존에 관한 연구

이봉수,장경진,Lee Bong-Soo,Chang kyung-Jin 대한수의사회 1991 대한수의사회지 Vol.27 No.3

This study was performed to investigate the viability of 4-cell, 8-cell and morula embryos after In vitro Culture and to compare the cryoprotective effectiveness of various cryoprotectants such as glycerol, DMSO and ethylene glycol in mouse. The results w

e-무역상사의 발전과제에 관한 연구

이봉수,Lee, Bong-Soo 한국무역상무학회 2003 貿易商務硏究 Vol.20 No.-

The trial business of e-trade service providers for supporting small enterprises to find their markets abroad is about to begin from the end of March, 2003. The department of Industrial Resources held the "Committee of e-trade service provider selection" with professors of e-trade field, and selected three companies: ECplaza, EC21 and Tpage Global. The e-trade service providers combine the various technologies of on-line trades and off-line trades to support small enterprises with lack of marketing skills by intermediation of overseas buyers and production, registration of e-catalogs and offers, administration of inquiries, trade negotiations, and contract settlement. Prospective small enterprises with exports under US$ 5 million will be selected by 2005. The selected companies will be supported fully by the government, and will be provided with the services by the e-trade service providers. e-Trade service will be the most potential and successful ones in the future, which helps traders and organizations preparing for globalization.

The Use of Ultrasound for the Extraction of Physiologically Active Component from Ginger(Zingiber officinale Roscoe)

Bong-Soo Lee(이봉수),Hyun-Jong Kim(김현종),In-Seob Kwak(곽인섭),Eun-Mi Lee(이은미),Hyun-Chul Lee(이현철),Bong-Woo Chung(정봉우) 한국생물공학회 2004 한국생물공학회 학술대회 Vol.2004 No.10

Coagulase 음성 포도상구균에 의한 원내감염 균혈증의 임상적 고찰

이봉수(Bong Soo Lee),김태룡(Tae Ryong Kim),유석환(Suk Whan Yoo),이경혜(Gyeong Hye Lee),이여민(Yeo Min Lee),임규택(Gyu Taek Lim),조석구(Suk Ku Cho),신완식(Wan Shik Shin),강문원(Moon Won Kang) 대한내과학회 1991 대한내과학회지 Vol.40 No.2

N/A During a 3 year period from July 1986 to June 1989, 1, 230 of 11,238 cases had positive blood culture, and coagulase-negative staphylococcus (CNS) was present in 370 cases (30.1%) at St. Mary`s hospital. In a retrospective study 345 cases were examined, 125 (36.2%) were true CNS bacteremia, and 75 of 125 cases (60% of CNS bacteremia) were nosocomial in origin (defined as those in which the first positive blood culture was obtained 48 hr after admission). There was a significant annual increase in nosocomial bacteremia and little relation in age-related incidences. The most common undelying diseases were hematologic or neoplastic diseases, mainly acute leukemia, followed by gastrointestinal or liver diseases. The common medical procedures frequently related to bacteremia were cytotoxic chemotherapy, catheterization, and steroid. The most frequent clinical features were fever and leukocytosis. The main sources of bacteremia were the respiratory tract, infected wounds, injured mucosa, and catheter; however the sources were unknown in over half of the cases. The overall mortality was 25.3%, and mortality was especially high in adults over 50 years of age. Mortality due to sepsis was similar to mortality from aggravating underlying diseases, and most of the expired patients had fatal underlying diseases. In antimicrobial susceptibility, the prominent feature was resistance to many commonly used antimicrobial agents. However there was no resistance to vancomycin.

SWIFTNet TSU BPO의 계보학적 연구

이봉수 ( Bong-soo Lee ) 한국통상정보학회 2016 통상정보연구 Vol.18 No.3

본 연구는 SWIFTNet TSU 선행연구의 고찰과 함께 지원업무의 내용을 살펴본 후, 이를 토대로 전자무역에 활용하기 위한 전략점 시사점을 분석하였으며 그 결과 얻어진 내용은 다음과 같다. 첫째, SWIFTNet TSU BPO의 거래를 개시할 때에 은행과 수입업자가 교환한 거래약정서에서 은행의 채권보전에 관한 규정을 설정하는 조치가 필요하다. 아울러 송금방식의 결제보다 비용은 더 들어가지만 SWIFTNet TSU BPO는 수출자에게 자금공여를 해주는 장점을 가지므로 수입자의 입장에서는 수출자와 매매계약을 할 때 제품 가격 인하의 주도권을 확보할 수 있다고 보았다. 둘째, SWIFTNet TSU BPO도 단일화된 공유기반의 플랫폼을 구축함으로써 보안성과 안정성 및 편리성을 갖추어야 한다. 이를 위하여 은행은 업무처리에 대한 서비스를 제공하기 위한 새로운 시스템을 구축할 필요가 있다. 나아가 SWIFTNet TSU BPO가 완전한 글로벌 시스템으로 완성되기 위해서 전세계의 무역거래자들이 만족할 수 있는 획기적인 결제 솔루션으로 거듭나야 하며 전자무역 결제시스템을 위한 기술적 표준화가 선결되어야 한다. 셋째, SWIFTNet TSU BPO를 은행결제와 다른 부가가치의 무역서비스 기능과 융합시키며 신속성, 외환결제 리스크 경감, 편리성, 비용절약 측면에서 우위성을 갖고 있으므로 여러 국가에서 더욱 편리하게 사용할 수 있도록 은행과 수출입업자, SWIFT의 협력 강화가 이루어져야 한다. 넷째, 무역유관기관들은 빠른 시일안에 은행지급확약통일규칙(URBPO)에 관한 지식의 습득이 요구되며 제도적으로 신속하게 확산될 수 있도록 글로벌 차원의 노력이 필요하다. 이와 함께 참여은행들에게는 거래 수수료에 대한 충분한 보상도 이루어져야 한다. The thesis examines genealogical study of various aspects to overcome lots of problems which come by when we execute SWIFTNet TSU BPO. Practical implications regarding the innovation of electronic trade infrastructure are as follows. First, the shipping documents in the SWIFTNet TSU BPO are directly sent to an importer by an exporter after the baseline is confirmed. With this process itself, therefore, the bank cannot secure the account receivable. When initiating the SWIFTNet TSU BPO deal, it is needed to set regulations on the bank’s account receivable security in the contract. Second, the SWIFTNet TSU BPO should also have an institutionally unified sharing platform with security, stability and convenience. It other words, it is needed to develop services which meet e-payment paradigm and international environments through continued analysis on market changes and flow. Third, the SWIFTNet TSU is useful in terms of promptness, reduction of risk in foreign exchange payment, cost reduction. Therefore, the SWIFT should be perfectly united and linked among the banks, importer and exporter to make the SWIFTNet TSU more convenient in countries around the world. Fourth, the SWIFT should be approached from the aspect of expansion of network and creation of a new business model through analysis on these problems with a worldwide perspective. At the same time, it is necessary to build a cooperative system to share information and promote comprehensive management for efficient operation.

합포해전지 위치 비정(比定)에 관한 연구

이봉수(Bong Soo Lee) 한국문화역사지리학회 2021 문화 역사 지리 Vol.33 No.2

임진왜란 당시인 1592년 5월 7일(음력) 전라좌수사 이순신이 경상도 해역으로 출전하여 승리한 전투 중 하나가 합포해전(合浦海戰)이다. 합포해전이 있었던 장소가 현재 지명으로 어디인지에 대해 여러 이론이 있다. 일찍이 이순신을 연구한 이은상과 이형석 등이 합포(合浦)를 현재의 창원시 마산합포구 산호동 일원으로 비정(比 定)한 바 있다. 이후 근자에 일부 이순신 연구가들이 합포는 창원시 마산합포구가 아니고 창원시 진해구 원포동에있는 학개(鶴浦)라는 주장을 펴고 있다. 그동안 해전지 비정을 위한 연구는 지리학이나 지명학자들이 아닌 군사학이나 일반 역사학을 전공한 사람들이 주도하였다. 합포해전지에 대해서도 지명학적인 관점에서 고찰하고 비정한 사례는 찾기가 쉽지 않다. 그리고 해전지 비정을 위해서는 현장답사를 통한 검증이 필수적인데 이를 간과하고 문헌 기록만으로 결론을 내는 경우가 많았다. 이런 우를 범하지 않기 위하여 본 논문에서는 지명학적 관점에서합포의 내력과 지명의 변천과정을 자세히 살펴보고 고지도를 바탕으로 탐색하는 작업을 하였다. 그리고 이순신이 선조에게 보고한 장계 초록인 『임진장초』의 내용을 바탕으로, 합포해전 당일의 상황을 재현하기 위하여 요트를 타고 임진왜란 당시 판옥선의 속도로 항행하면서 현장 실측 검증을 두 차례 실시하였다. 그 결과 합포해전지는현재의 창원시 마산합포구, 마산회원구, 성산구 사이의 마산만 일대임을 밝혀냈다 On May 7, 1592, during the Japanese invasion of Korea, one of the battles that Admiral Yi Sun-shin won was the Battle of Happo. There are many theories about where the Battle of Happo took place. Earlier, Lee Eun-sang and Lee Hyung-seok had settled Happo as Sanho-dong, Masan Happo-gu, Changwon city. Since then, some researchers have claimed that Happo is not a Masan Happo-gu in Changwon city, but a Hakgae in Wonpo-dong, Jinhae-gu, Changwon city. This study examined the history of Happo and the transition process of its geographical names based on old lituratures and maps. According to the contents of ‘Imjinjangcho,’ a copy of the report named ‘Janggye,’ which Yi Sun-shin reported to King Seonjo, the site of Happo Battle Field was verified twice by sailing at the speed of Panokseon, a Korean warship during the Japanese Invasion of Korea, by yacht to recreate the situation on the day of the Battle of Happo. As a result, Happo Battle Field was found to be located in Masan Bay around Masan Hapo-gu, Hoewon-gu, and Seongsan-gu in Changwon city

Dynamic Perspectives on the Advancement of Korea's Electronic Customs Clearance System

이봉수(Lee, Bong Soo) 한국무역상무학회 2009 貿易商務硏究 Vol.44 No.-

This thesis examines the problems faced in the clearance procedures of Korea’s e-customs system for which improvements are necessary, and suggests various ways of overcoming those problems. Practical implications regarding the advancement of Korea’s e-customs system are as follows. First, the substructure of the e-customs clearance system, which is the basis for the establishment of a global single window, should be developed into a more modern and advanced system. Second, additional improvements in the law are required to render the broad array of Internet-based export and import documents legally binding. Third, customized services should be provided in order to improve the operating efficiency of the e-customs clearance system. Fourth, the reputation of Korea's e-customs clearance system should be raised via the strengthening of a cooperative system between concerned parties, including exporters and importers. This innovative approach to systematic improvements will come about when we can simplify current customs clearance procedures and establish a fairer customs inspection administration regime. Additionally, when we review the methods intrinsic to our customs system, we must emphasize the urgency of proper completion of related systems and arrangements in the trade business and similar fields.