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손윤범,한정섭 東亞大學校 海洋資源硏究所 1999 硏究論文集 Vol.12 No.1
In order to study for corrosion behavior of reinforcing steel wiht oxidation layer, the characteristics of corrosion behavior were measured by polarization resistance method and cyclic potentiodynamic method. Experiments were done with various NaCl concentrations and with immersion time in simulated concrete pore solution(SPS). Rebars were coated by epoxy except corrosion area and except connecting area with potentionmeter. The corrosion potential of rebar with oxidation layer was higher than that without oxidation layer and it also showed two anodic-nose. By the result to potentiodynamic method, the potential curve shifted to low potential region with time and anodic-nose was appeared with 3% NaCl solution after 15 days. By the result of cyclic Potentiodynamic method, the types of corrosion were different according to concentrations.
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가막만에 출현하는 동물플랑크톤의 종조성과 계절별 출현 양상
서호영,이인태,윤양호,최상덕,이삼노,한명일,김병섭,강윤호,이우범 한국환경생물학회 2002 환경생물 : 환경생물학회지 Vol.20 No.2
가막만에 출현하는 동물플랑크톤을 계절별(2001년 4월, 7월, 9월, 12월)로 Norpac네트를 이용하여 수직 채집하였다. 우점적으로 출현한 분류군은 4월과 12월에 요각류, 7월에 요각류와 지각류,9월에 야광충이었다. 출현 개체수는 22~17,197indiv. m^-3으로 시·공간적으로 변동폭이 매우 컸다. 요각류의 우점종은 4월에 Euryte-mora pacifica, Acartio omorii, Cenfropages abdominalis, Colanus sinicus, 7월에 Lobidocera rofunda와 A. erythraea, 9월에 A. eryfhraea와 Paracalanus parvus s. l., 12월에 A. omorii와 E. pacifca로 주로 내만종으로 변하였다. 그러나, 9월에 외양종인 Eucalanus sp.와 Neo-calnus sp. 또한 다수 출현하였다. 이와 같은 출현 경향은 가막만이 폐쇄성 내만임에도 불구하고 동물플랑크톤의 분포 특성은 내만수 이외에 계절적으로 외만수의 영향을 강하게 받고 있음을 암시하고 있다. Zooplankton was sampled vertically with a Norpac net from Gamag Bay in April, July, September and December, 2001. Copepods were predominant in April and December, and cladocerans in July and Noctiluca scintillans in September, respectively. There are high spatio-temporal fluctuations in the abundance of zooplankton with a range of 22∼17,197 indiv./㎥. In the copepod community, neritic species, Eurytemora pacifica, Acartia omorii, Centropages abdominalis and Calanus sinicus were predominant in April; Labidocera rotunda and A. erythraea in July; A. erythraea and Paracalanus parvus s. l. in September; A. omorii and E. pacifica in December. However, oceanic species Eucalanus sp. and Neocalanus sp. were abundant in September. It indicates that although Gamag Bay is semi-closed, the distribution pattern of zooplankton is seasonally strongly affected by oceanic waters in addition to neritic ones.
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서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)
김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1
In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.
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Pathogenetic and etiologic considerations of febrile seizures
Han Ji Yoon,Han Seung Beom 대한소아청소년과학회 2023 Clinical and Experimental Pediatrics (CEP) Vol.66 No.2
Febrile seizure (FS), which occurs in febrile children without underlying health problems, is the most common type of seizure disorder in children. The suggested pathogenesis of FS derived from several animal and human studies is multifactorial and debatable. Neuronal hyperexcitability, which develops during inflammatory responses that accompany fever, provokes seizures. However, the exact role of each inflammatory mediator (e.g., cytokines) is undefined in terms of the connection between systemic or local inflammation and the central nervous system, and the mechanisms by which cytokines increase neuronal excitability remain unclear. In contrast, the cause of fever in most children with FS is usually mild respiratory virus infection (e.g., rhinovirus, influenza virus, adenovirus, and enterovirus) rather than severe bacterial infections. In temperate regions, the major causative respiratory viruses seem to mirror seasonally prevalent respiratory viruses in the community. Therefore, vigorous efforts to identify the causative pathogen of fever may not be necessary in children with FS. Genetic factors seem to play a role in neuronal hyperexcitability, and some types of genetic variation have been identified in several genes encoding ion channels of neurons that participate in neuronal excitation. Although most children with FS have benign outcomes, some characteristics such as complex FS, febrile status epilepticus, consecutive afebrile seizures, and the presence of neurodevelopmental disabilities may require further genetic and neurologic evaluations.
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한범구(Beom Ku Han),이우진(Woo Jin Lee),조도현(Do Hyun Jo),김정근(Jeung Kun Kim),백제현(Je Hyun Baek),윤경한(Kyoung Han Yoon),주동표(Dong Pyo Ju) 한국키틴키토산학회 1998 한국키틴키토산학회지 Vol.3 No.4
We proposed a quantitative empiric equation for the effect of reaction time and reaction temperature on chemical deacetylation of chitin. The mathematic formula was proved to be in good agreement with the experimental values within 1.94% of AAD. According to the estimated results by the equation, optimal reaction temperature and reaction time were 413-433K and 60 minutes or less, respectively.
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철근콘크리트 라멘조 건축물의 기계식 해체공사에 따른 구조안전성 평가 방법
송한범 ( Song Han-beom ),이동우 ( Lee Dong-woo ),이한주 ( Lee Han-joo ),윤병익 ( Yoon Byung-ick ) 한국구조물진단유지관리공학회 2009 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.13 No.1
When mechanical demolition is performed, the weight of dismantling equipment and the demolition waste of buildings are applied to unexpected load that does not considered during the design of structural member. It is urgently required a structural analysis method to evaluate the safety and the guideline for the appropriate capacity of structural member to support dismantling equipment weight, reflecting the actual circumstance of mechanical demolition. Therefore, the suggested structural analysis method and the guideline for an ability to the loading of dismantling equipment weight can reasonably evaluate the capacity of structural member in demolition, and be used effectively for the increasing efficiency through the proper mangement of dismantling equipment.
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철근콘크리트 라멘조 건축물의 기계식 해체공사에 따른 구조안전성 평가
송한범 ( Song Han-beom ),이동우 ( Lee Dong-woo ),이한주 ( Lee Han-joo ),윤병익 ( Yoon Byung-ick ) 한국구조물진단유지관리공학회 2009 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.13 No.1
When mechanical demolition is performed, the weight of dismantling equipment and the demolition waste of buildings are applied to unexpected load that does not considered during the design of structural member. It is urgently required a structural analysis method to evaluate the safety and the guideline for the appropriate capacity of structural member to support dismantling equipment weight, reflecting the actual circumstance of mechanical demolition. Therefore, the suggested structural analysis method and the guideline for an ability to the loading of dismantling equipment weight can reasonably evaluate the capacity of structural member in demolition, and be used effectively for the increasing efficiency through the proper mangement of dismantling equipment.
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