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Accumulation and Elimination of Cadmium and Zinc in Littorina brevicula (총알고둥에서 카드뮴과 아연의 축적과 제거)

  • Han, Su-Jeong;Lee, In-Suk
    • The Korean Journal of Ecology
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    • v.24 no.1
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    • pp.35-43
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    • 2001
  • Accumulation, elimination and subcellular distribution of heavy metals in Littorina brevicula exposed to cadmium and zinc separately and concurrently were investigated. When the winkles had been exposed to 400 ㎍/L CdCl₂ and 3000 ㎍/l ZnSO₄ separately for 90 days, each of the metal body burden in the whole sofl parts increased in proportion to time of exposure until 70 days. But it didn't increase after 70 days. But when the winkles had been exposed to cadmium and zinc simultaneously, cadmium body burden decreased but zinc body burden increased as compared to the winkles exposed to each of the metal. We also found that cadmium accumulated in the winkles was not depurated for 42 days, but zinc accumulated in them was depurated. Especially, zinc was depurated faster when they had been exposed to mixture of cadmium and zinc. After the winkles had been exposed to cadmium and zinc separately for 70 days, about 60% cadmium of the total body burden was associated with the soluble fraction, while about 75% zinc of the total body burden was associated with insoluble fraction. And these trends of metal partitioning did not alter when the winkles had been exposed to metal mixture. After the soluble fraction applied to gel-filtration chromatography column, the distribution patterns of cadmium and zinc associated with proteins or ligands were different each other. Most of cadmium (>90%) in the soluble fraction was bound to MBP-1 (Metal-binding protein-1), about 6.5 kDa), while zinc was distributed evenly to HMW (High molecular weight fraction, >60 kDa), MBP-1, MBP-2 (about 5 kDa), LMW (Low molecular weight fraction, <1 kDa).

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(2)건강기능식품법의 하위법 제정에 즈음한 방향 제안

  • Son, Dong-Hwa
    • Bulletin of Food Technology
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    • v.15 no.4
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    • pp.73-101
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    • 2002
  • 21세기는 과학기술의 비약적인 발전으로 정보통신기술, 환경기술, 나노기술 그리고 생명과학에 의한 바이오기술이 고부가가치 지식산업으로서 국가경쟁력 강회를 위한 국가전략 핵심산업으로 대두되고 있습니다. 특히 바이오기술의 응용산업인 건강기능식품은 국민의 질병예방과 건강증진을 통한 삶의 질 향상에 이바지하고, 21세기 미래 고부가가치산업으로 발전할 것으로 기대하고 있습니다. 이러한 시기에 국민보건과 건강기능식품산업의 발전을 위한 건강기능식품에 관한 법률(건강기능식품법) 이 의원입법으로 국회에 상정되어 1년 이상의 검토를 거쳐 지난 7월 31일에 국회 본회의를 통과하였습니다. 그후 8월 26일자로 이 법을 정부에서 공포하였으며 내년 8월 26일부터는 발효할 예정입니다. 그러나, 건강기능식품법의 제정은 건강기능식품관련 제도의 완성이 아니라 시작입니다. 즉, 건강기능식품법의 기초는 마련하였지만, 그 하위법인 시행령, 시행규칙, 고시등이 제대로 된 모습을 갖추어야 비로소 국민이 만족하고, 산학연의 동반 발전을 이룰 수 있는 이 분야의 산업발전을 기할 수 있습니다. 그리고, 건강기능식품담당 정부부처인 식품의약품안전청은 현실적으로 그 하위법을 금년 말(2002년)이나 내년 초(2003년)에 준비한 후 입법 예고하여야하는 시간적 제약을 안고 있습니다. 이러한 연유로 단기간 내에 하위법을 준비하다 보면 자칫 애초에 정부와 산학연이 바라던 바와는 다른 엉뚱한결과를 초래할 우려가 있는 만큼, 법 제도의 명확한 방향설정이 매우 중요합니다. 그래서, 한국식품과학회 건강기능식품분과위원회는 이 문제의 중요성을 깊이 인식하고 산학연 전문가그룹(식품과학자, 영양과학자, 학계, 연구계, 기업계: 16인)을 구성하였습니다. 전문가그룹은 지난 7 - 8월, 2달 동안에 수 차례 회의를 통하여, 건강기능식품법 하위법 준비 중 핵심사항은 건강기능식품의 기능성 표시와 평가 라는 점에 착안하고, 이에 대하여 중점적으로 검토하였습니다. 그 이외에도 섭취량 설정 , 심사자료의 인증요건 , 기능성분의 표시 등에 대하여도 부수적으로 검토하였습니다. 그 결과, 동물실험을 이용한 기능성평가 방향 (이미 본지의 전호에서 게재한 바 있어생략)을 제외한 주요사항을 다음의 별도 기사로 각각 소개합니다. 또한, 이 내용은 지난 9월 13일, COEX에서 제1회 건강기능식품 전시회 및 학술세미나 행사의 일환으로서 개최된 학술세미나에서 발표하고 토론회를 거쳤습니다. 또한, 지난 10월 26일, 무주리조트에서 식품과학회 추계학술대회 행사의 일환으로 개최된 건강기능식품분과위원회의 토론회에서도 좋은 의견을 교환한 바 있습니다. 두 차례의 토론회를 통하여 건강기능식품분과위원회가 제안한 초안이 대체적으로 매우 바람직한 것으로 평가받았으며 많은 동의를 얻었습니다. 이어서 토론회의 내용을 반영한 식품과학회의 안을 최종적으로 준비하고 이를 11월초에 식품의약품안전청에게 정책 건의하였습니다. 다음의 별도기사에 덧붙여서, 토론회를 통하여 수정(또는 강조)하고자 하는 부분은 아래와 같습니다. 1) 동물실험 등에서 흡수, 대사 등으로 표기한 서술 용어는 흡수, 분포, 대사, 배설 로 대체합니다. 2) 기능성 평가방법의 표준화와 관련하여 분과위원회에서 제시한 안은 평가방법은 심의위원회가 사안에 따라 기능성 평가시에 그 평가방법의 적합성을 검토함이 바람직하다 라고 하였습니다. 그러나, 이를 부분적으로는 평가방법을 표준화할 필요가있다 로 수정하고자 합니다. 즉, 평가방법이 전혀 제시되지 않으면 막막함으로, 기본적인 방법이면서 여러사람들이 참고로 할만한 방법에 대하여는 표준화를 병행함이 더욱 좋겠다고 생각합니다. 또한, 표준방법으로 제시된 것만이 유일한 방법은 아니므로 다른 방법으로 평가하는 것도 가능함으로 제시합니다. 3) (가칭)건강기능식품 인체시험 관리지침과 관련하여 이는 식약청장이 정할 사안이지만, 그것은 국내 의약품 임상시험 관리지침 과는 뚜렷이 차별화되는 것으로 실제로는 의사의 도움없이도 인체시험을 시행할 수 있음을 명확히 할 필요가 있습니다.

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The Physical Region of China Divided by the Characteristics of Drainage Patterns. (하계망패턴의 특색으로 구분한 중국의 자연지역)

  • Hwang, Sang-Ill
    • Journal of the Korean association of regional geographers
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    • v.2 no.1
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    • pp.151-164
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    • 1996
  • The regional division by the characteristics of the drainage patterns is important to understand its physical environment comprehensively, because the drainage network develops in reflecting characteristics of geological, geographical and climatical features in the drainage basin keenly. This study is the attempt to divide physical region in China whose drainage pattern is diverse. Chinese drainage basin is mainly divided into the interior drainage basin and the peripheral drainage basin. The interior drainage basin is divided into (1)the deranged pattern and (2)the centripetal pattern. The peripheral drainage basin is divided into (1)the dendritic pattern, (2)the parallel pattern, (3)the radial pattern and (4)the anastomatic pattern. Drainage patterns of the interior drainage basin are formed by affecting geographical features and climatic conditions mainly. In the peripheral drainage basin, drainage patterns are formed by other factors: the parallel pattern is connected with geological structure lineament by tectonic movement, the radial pattern with changes of the river channel resulted from the Yellow River's overflow, the anastomotic pattern with human's activities. The distributional features of the physical region in China are as follows: The deranged pattern appears in Zangbai Plateau, the centripetal pattern does in arid basin of the northwest China. the parallel pattern does in Hengduan mountains affected strongly by tectonic movement between Yangtze paraplatform and Indian Plate, does in the upper stream of Yangtze River and Ganges River in the south of Qinghai-Xizang Plateau, the radial pattern in Huaihe Haihe River drainage basin appearing in the alluvial fan region of Yellow River's downstream and the anastomotic pattern does in the delta of Yangtze River, in the northern coastal plain of the Jiangsu-Province and in the delta of Zhujiang River. Except these areas in the peripheral drainage basin, the dendritic pattern is usually found in the other areas.

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A Bibliographical Study of Tzeam Using the Fish, Vegetable and Etc (찜의 문헌적 고찰( II ) - 어패류.채소류 및 기타를 이용한 찜을 중심으로 -)

  • Kim, Eun-Sil;Chun, Hee-Jung;Lee, Hyo-Gee
    • Journal of the Korean Society of Food Culture
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    • v.5 no.1
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    • pp.77-99
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    • 1990
  • In this thesis, according to the kinds of tzeam in the main materials of fish, vegetable and etc was to analysis reference frequency to them the materials, the measuring unit of materials, the terms of cooking by 49 books published in Korea from 1670 to 1987. 1. It was 69 kinds of tzeam in the main materials of fish vegetables and etc. 2. Materials were classified into the main-materials, sub-materials, seasioning and decorations. 3. There were 42 kinds of measuring units, of them 16 kinds were for volume, 16 kinds were for quantity, 2 kinds were for length and the rest measuring units were 8 kinds. 4. There were 22 kinds of cooking terms. The terms of them, 15 kinds were for heating methods, 7 terms of them were for the cutting process.

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Evaluation of Phototoxicity for Cosmetics and Alternative Method (화장품 광독성 평가와 동물대체시험법)

  • Lee, Jong-Kwon;Sin, Ji-Soon;Kim, Jin-Ho;Eom, Jun-Ho;Kim, Hyung-Soo;Park, Kui-Lea
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.31 no.3 s.52
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    • pp.245-251
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    • 2005
  • Safety is one of the key issue in the regulation of cosmetics. Cosmetic Act deals with it in Korea. The guidance for the testing cosmetic ingredients and their safety evaluation are prepared by Korea Food and Drug Administration. Ultraviolet radiation could Induce skin damage, edema, erythema, photoaging, immune dysfunction and skin cancer. Ultraviolet radiation is classified as Group 2A(probably carcinogenic to humans) by International Agenry for Reaserch on Cancer(IARC). The in vitro methodologies for evaluating the toxic potential of ingredients reported in the literature have not yet been sufficiently validated for use in areas other than the study for mutagenicity/genotoxicity, for pre-screening for severe irritancy, for screening of phototoxicity and for evaluating the percutaneous absorption. The 3T3 neutral red uptake photoxicity test (3T3 NRU PT) was accepted as OECD toxicity guideline in 2002. The 3T3 NRU PT is an in vitro method based on a comparison of the cytotoxicitv of a chemical when tested in the presence and in the absence of exposure to a non-cytotoxic dose of UVA/visible light.

A Study on the Korean National Police's Protesting Policing Policy through the Analysis of Negotiated Management Model (협의관리모델 분석을 통한 한국 경찰의 집회시위 관리정책 연구)

  • Hwang, Kyu-Jin;Kim, Hak-Kyong
    • Convergence Security Journal
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    • v.11 no.2
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    • pp.65-77
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    • 2011
  • In Western Europo and the US, there has been a general trend over 30 years of reducing the amount of force by the police, through a paradigm shift from 'Escalated Force Model' towards 'Negotiated Management Model'. In tune with this trend, for example, the Swedish Police have implemented the uniformed 'Dialogue Police' system, in order to establish communication contact with demonstrators, before, during, and after their events, The Negotiated Management Model involves a greater respect for the rights of protesters, a more tolerant approach to community, and improved intelligence, communication, and flexibility, in order to facilitate lawful protests and to reduce the possibility of an escalation of major public disorder. The Korean National Police (KNP) appears to be operated within this negotiated management framework, since in preparation for the G20 Seoul Summit, they have also emphasized good communication between the police and protest groups, by newly creating the concept of 'Protest Policing Through Facilitation of Lawful Protests'. In this context, this study first attempts to analyze not only the negotiated management model, but also the Swedish dialogue police. Secondly, the study conducts a comparative study between the KNP's Protest Policing Through Facilitation of Lawful Protest and the Swedish dialogue police system, particularly, in conjunction with the negotiated management. Although Korean and western police have different system and history, protest policing model is now approaching with each other through a link between conflict resolution techniques, such as dialogue, negotiation, mediation and facilitation. Finally, the study is to prove if the KNP's protest policing model corresponds with the negotiated management model, and further to suggest new 'Facilitation of Conflict Resolution Model' as a desirable future of the KNP's protest policing.

Cadmium Elimination in Tissue of Olive Flounder, Paralichthys olivaceus after Long-Term Exposure (카드뮴 장기노출 후 넙치, Paralichthys olivaceus의 기관에 따른 카드뮴의 배출)

  • KIM Seong-Gil;JANG Suck-Woo;KANG Ju-Chan
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.36 no.1
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    • pp.44-48
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    • 2003
  • Experiments were carried out to investigate the elimination of cadmium in tissues (gill, intestine, liver, kidney and muscle) of flounder, Paralichthys olivaceus, after sub-lethal Cd exposure (5, 50, 100 ${\mu}g/L$). During the depuration phase, Cd concentration in the gill decreased immediately following the end of the exposure period. The elimination rates at the end of depuration periods were $18\%$ for 50 ${\mu}g/L$ exposure and $70\%$ for 100 ${\mu}g/L$ exposure. Intestine showed fastest elimination rates of Cd at all concentration. At the end of the depuration period, the Cd concentration was similar to that in the control, Cd elimination in liver significantly decreased after 10 days of depuration period. After 20 days of depuration, the elimination rate was $66.20\%$ in the fish exposed to 50 ${\mu}g/L$ and $86.22\%$ in the fish exposed to 100${\mu}g/L$. The order of cadmium elimination in tissues were decreased intestine>liver${\geq}$gill>>kidney during depuration periods. In this study the gill, intestine and liver showed faster elimination rate of Cd in 50, 100 ${\mu}g/L$-Cd exposure concentration. After the end of the Cd exposure, the Cd concentration in the kidney slowly decreased or remained constant and the Cd concentration in the muscle slowly increased or remained constant.

A Guideline for the Location of Bus Stop Type considering the Interval Distance of Bus Stops and Crosswalks at Mid-Block (Mid-Block상의 버스정류장과 횡단보도 이격거리를 고려한 버스정류장 배치형태 기준 연구)

  • Lee, Su-Beom;Gang, Tae-Uk;Gang, Dong-Su;Kim, Jang-Uk
    • Journal of Korean Society of Transportation
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    • v.28 no.2
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    • pp.123-133
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    • 2010
  • The national standards for the installation of pedestrian crosswalks prohibits installation of crosswalks within 200 meters of nearby overpasses, underpasses, or crosswalks. In case the exceptional installation is required, the feasibility study is to be thoroughly conducted by the local police agency. However, it is an undeniable fact that the specific installation standards for optimal types and locations of crosswalks are not yet to be established. This paper examines the development of traffic accident prediction model applicable to different types and locations of bus stops(type A and type B) at mid-block intersections. Furthermore, it develops the poisson regression model which sets the "number of traffic accidents" and "traffic accident severity" as dependent variables, while using "traffic volumes", "pedestrian traffic volumes" and "the distance between crosswalks and bus stops" as independent variables. According to the traffic accident prediction model applicable to the type A bus stop location, the traffic accident severity increases relative to the number of traffic volumes, the number of pedestrian traffic volumes, and the distance between crosswalks and bus stops. In case of the type B bus stop model, the further the bus stop is from crosswalks, the number of traffic accidents decreases while it increases when traffic volumes and pedestrian traffic volumes increase. Therefore, it is reasonable to state that the bus stop design which minimizes the traffic accidents is the type C design, which is the one in combination of type A and type B, and the optimal distance is found to be 65 meters. In case of the type A design and the type B design, the optimal distances are found to be within range 60~70meters.

A Study of figure's episodes of in a Collection of Lee, Duck Moo's Works(ChungJangKwan Junseo) (이덕무(李德懋) 『청장관전서(靑莊館全書)』 소재 인물 일화(逸話) 연구)

  • Kim, Kyun-tae
    • Journal of Korean Classical Literature and Education
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    • no.15
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    • pp.389-419
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    • 2008
  • I already wrote a thesis about A Study of Ideologies and Stylistic Features of the Oral Narratives in a Collection of Lee, Duck Moo's Works(ChungJangKwanJunseo)" in The Classical Literature and Education Vol.11, (2006). At that time I held over a study of figure's episodes. So this essay is a series of the thesis. In this essay, I described his critical ideas about the figure's episodes of other people. I classified as the gentry's episodes and the common's episodes, and ones more classified these as the Confucian's moral episodes and the oddity's strange episodes. And I studied the narrative principles and features of narrative structure. He asked for a reasonal thinking attitude in the figure's episodes of other people. In his the gentry's episodes he indicated as a important value the constant attitude of propriety and dignity. The other hand, in his the common's episodes he thought importantly a practical act of the Confucian's moral. He showed man's equality and criticized the anti-practical attitude of the gentry group. In the oddity's strange episodes were focused on the super ability of figures in the both of groups. And then even though there are unreal or unreasonable contents in the oddity's strange episodes, he did not criticize. His such attitude was came out to take interest in unreal story like the Paesasopeum(稗史小品). The the narrative principles of his episodes are two types, one is a summary or a report type, the other is a descriptive of events type. the former was explained by narrater, the latter was described as the indirect or direct narration of the characters. In the structure of narrative in case a summary type were enumerated with the episodes, but in case a report or descriptive type of events were contrasted with characters. A story-telling way of figure's episodes borrowed from 'Jeon(傳)' or 'Yadam(野談)' genre. And a point of view in case a summary or a report type was consisted with a center of narrater, in case a descriptive of events type was consisted with a center of witness.

Study on Effective Operational Plan of Maritime Safety Enforcement Task : Focus on Vessel Safety Management (해양안전 집행업무의 효율적 운영방안 연구 -선박안전 관리를 중심으로-)

  • Byungdoo Yun
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.28 no.7
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    • pp.1169-1178
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    • 2022
  • This study examines an effective operational plan of a maritime safety enforcement task that is distributed in the Ministry of Oceans and Fisheries and the Korea Coast Guard for maritime safety. Considering the sinking of the MV Sewol and Seohae vessels and the MV Hebei Spirit oil spill, normally marine safety accidents tend to not only damage human life, property, and marine environment but can also expand to disasters; therefore, precautionary measures are required. However, the Korean government takes superficial efforts in case of large-scale accidents. In case of the MV Sewol ferry, the government only focused on punishing the officials involved as a follow up and never mentioned any effective plan, such as "unification of maritime safety enforcement," in contrast to an advanced country. As a result, there are endless major and minor backward accidents. The probability of large-scale maritime accidents and backwardness accidents is increasing owing to vessels becoming large sized, high speed, and aged; sailors being unqualified; port traffic increase, development of marine leisure; and inefficiency dual marine safety systems. Therefore, based on the review of previous studies related to maritime safety, major advanced country's cases, and unified case of the vessel traffic service, this study suggests effective methods such as coastal vessel safety management, port state control and aid to navigation management, which are directly connected with maritime safety.