• 제목/요약/키워드: Fish poison

검색결과 22건 처리시간 0.021초

어독성 시험에 의한 그라우팅재의 수질오염 평가 (The Evaluation of Toxic Effect of Grouting Materials by Fish Poison Test)

  • 천병석;김진춘;이영근
    • 한국지하수토양환경학회:학술대회논문집
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    • 한국지하수토양환경학회 1998년도 공동 심포지엄 및 추계학술발표회
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    • pp.156-161
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    • 1998
  • As grouting materials for ground improvement, silicate materials such as water glass, silica-sol and so forth are used worldwide. However, they may pollute underground water. In this study, fish poison test(Korean standard industrial code KS M 0111) which estimates toxicity for fish is applied to evaluate the toxic effect by grouting materials. From the test result of the sample made of LW, LC50(Median Lethal Concentration) reaches within 24 hours. In case of the silica-sol, it does not even in 96 hours. Therefore, we can conclude that the sililca-sol grouting method is more free from the danger of underground water pollution. From the result that the mortality of fish under the condition of pH 8.6 is 0% within 96 hours, the groundwater can be saved by controlling pH below 8.6 for the grouting in the field.

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복어 독(Tetrodotoxin)에 관한 문헌적 고찰 (Bibliographic Studies on the Tetrodotoxin(TTX))

  • 황태준;권기록;최익선
    • 대한약침학회지
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    • 제3권2호
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    • pp.1-25
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    • 2000
  • We were trying to study the validity of Puffer fish's poison(Tetrodotoxin- TTX) to make a traditional Korean Medical treatment. The following conclusions were made after literary studies. 1. The first record of the puffer fish dates back 2000 years ago in the Chinese text Book of Mountain and Sea and other texts from the similar period. 2. Puffer fish's poison IS known as tetrodotoxin which is an amino perhydroquinazoline compound. It has a chemical formula of $C_{11}H_{17}N_3O_8$ in the hemiacetal structure and has the molecular weight of 319. 3. Tetrodotoxin (TTX) plays a role as potent neurotransmitter blocker by blocking the $Na^+$ -gate channel which hinders the influx of $Na^+$ ion into the cell. 4. Symptoms of the puffer fish poisoning ranges from blunted sense in the lips and tongue, occasional vomiting in the first degree to sudden descending of the blood pressure, apnea, and other critical conditions in the fourth degree. Intoxication of the puffer fish poison progresses at a rapid pace as death may occur after an hour and half up to eight hours in maximum. Typical death occurs after four to six hours. 5. Ways to treat the puffer fish poisoning include gastric irrigation, induce vomiting, purgation, intravenous fluid injection, and correcting electrolytic imbalance and acidosis. In cases of dyspnea, apply oxygen inhalation and conduct artificial respiration. 6. Tetrodotoxin (TTX) may be applied in treating brain disorders, ocular pain, excess pain in the large intestine and ileum, and relieving tension of the skeletal museles, neuralgia, rheumatism, arthritis, and etc. 7. In terms of Oriental medicine, the puffer fish poison has characteristics of sweet, warm, and poisonous. It's known efficacies are to tonify weakness, dispel damp, benefit the lower back, relieve hemorrhoid, kills parasites, remove edema, and so forth. And the puffer fish eggs processed with ginger are said to be effective against tuberculosis and lung cancer, thus, it's validity must be investigated and further research should be followed.

복어독의 종양 관련 기존연구 논문에 대한 분석 (Analysis for cancer-related studies using Puffer fish poison)

  • 조용래;이성배;박세영;손창규
    • 혜화의학회지
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    • 제28권2호
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    • pp.1-11
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    • 2019
  • Objective: The aim of this study is to analyze the previously published research articles related to puffer fish toxin focusing on tumor. Method: Literatures were searched in PubMed database, published since 2000, using the keyword; Puffer fish, Fugu and tetrodotoxin (TTX) with cancer or tumor. Research papers were classified by year, country, study model, used material, kind of tumor and study subject. Finally, a total of 41 studies were analyzed in this study. Results: From 2000 to 2018, the most abundant papers were published in 2009 (6 studies) and almost half of the papers were studied in United Kingdom (20 studies). The 39 studies used TTX purified from puffer fish while 2 studies used crude extract of skin and gonad of puffer fish. The most used target cell line was prostate cancer (15 studies), and the next was breast cancer (14 studies). The study methods were classified into 4 clinical studies, 2 animal studies and 35 cell-based studies. Conclusions: Our results show that the overview of cancer-related studies using puffer fish poison. This information would be helpful for the puffer fish-derived drug researches in the future.

시멘트광물계 숏크리트재의 강도특성과 친환경성 (The Strength and Environmental Friendly Characteristics of Cement Mineral Types Shotcrete)

  • 천병식;도종남;박덕흠;최희림;이해성
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2008년도 춘계 학술발표회 초청강연 및 논문집
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    • pp.762-765
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    • 2008
  • Shotcrete is NATM technique after tunnel excavation as major tunnel support for ground stability, curtail of execution period and reduction of execution expenses instead of general lining method. It is trend using constantly shotcrete lining. This high-strength shotcrete is require to use as constantly shotcrete lining. This brought out the solution of environmental pollution and harmfulness about human. Accordingly, in this study Specimens of strength measurement was made to develop shotcrete possible to develop in early materials with Cement Mineral Accelerator as NATM method construction. It's compared with existing shotcrete material, Unconfined Compression test, flexural strength test were experimented. The fish poison test was experimented to evaluate an influence of environment. On results of test, Unconfined Compressive Strength and flexural strength was equivalent with 28-day strength of existing material. On results of fish poison evaluation research subject material was founded environmentally friendly for existing shotcrete.

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유독플랑크톤(과편모조류를 중심으로)에 관한 고찰 (On the Some Toxic Dinoflagellates)

  • 한명수
    • 한국수산과학회지
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    • 제23권1호
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    • pp.51-60
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    • 1990
  • Some species of dinoflagellates were considered as one of the causative organisms of PSP(Paralytic Shellfish Poison) or DSP(Diarrhetic Shellfish Poison). Fish and shellfish are intoxicated by feeding of toxic plankton, sometimes human is intoxicated by feeding on these intoxicated fish and shellfish. In past ten years, the physiological and ecological studies of the toxic plankton has been investigated for development of monitoring system and preventation and control measures of PSP. However, in our country still little is known on a research for the toxic dinoflagellates. This paper reviews the general biology, taxonomic problem, physioecology and culture method of the toxic planktons such as Protogony-aulax and Dinophysis.

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Evaluation of feed types based on growth performance, survival, hematology, and resistance in celebes rainbow (Marosantherina ladigesi)

  • Amrullah;Wahidah;Khusnul Khatimah;Ardiansyah;Eka Rosyida;Imam Taufik
    • Fisheries and Aquatic Sciences
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    • 제26권10호
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    • pp.583-592
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    • 2023
  • Celebes rainbow (Marosantherina ladigesi) is one of Indonesia's exported ornamental fish commodities, but the exploitation of this fish only relies on wild catches. The rise of unlimited fishing, especially those using poison, has changed the aquatic environment, threatening sustainability and causing fish extinction. This study aimed to evaluate the effectiveness of several types of feed in improving the absolute growth rate (AGR), specific growth rate (SGR), survival rate (SR), feed conversion ratio (FCR), feed efficiency (FE), hematology, and immune response of Celebes rainbow. The fish used in this study were male ornamental Celebes rainbow (M. ladigesi) weighing 1.32 ± 0.21 g/ind, reared in 54 L-aquariums at a stocking density of 30 individuals/aquarium for six weeks. The fish were fed according to the test diet consisting of live Tubifex sp worms, dry Tubifex sp worms, Spirulina platensis, and crumble pellets. The parameters observed were AGR, SGR, SR, FCR, FE, hematology, intestinal histology, liver histology, and a challenge test with the pathogenic bacteria Aeromonas hydrophila. The results showed that fish-fed live Tubifex sp worms had better AGR, SGR, SR, FCR, FE, hematology, and disease resistance compared to all other treatments. These results indicate that live Tubifex sp worms are the best feed for rearing Celebes rainbow.

무기질계 지반주입재의 내구성 및 친환경적 특성에 관한 연구 (A Study on the Durability and Environmentally Friendly of Inorganic Grouting Material)

  • 천병식;박덕흠;강형남;도종남
    • 한국지반환경공학회 논문집
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    • 제9권5호
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    • pp.37-43
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    • 2008
  • 무기질계 주입재는 지반개량 재료로서 기존의 물유리계 재료를 사용할 경우 발생하는 용출현상 및 강도저하를 보완한 시멘트계 급결재와 무기질계 초미립자를 주원료로 하는 순수 무기질 재료를 사용한 것으로서, 시공 후 내구성 및 강도가 우수하고 주입재의 용출 현상이 발생하지 않아 환경오염 문제가 거의없는 영구적인 차수 및 보강에 적합한 친환경적인 재료이다. 본 연구는 지반개량 재료로서 급결성 시멘트계 재료와 순수 무기질 주입재를 주원료로 배합된 MIS(Micro Injection-process System)와 기존에 많이 쓰여지고 있는 물유리계 주입재인 SGR의 내구성 및 친환경적특성을 일축압축강도시험, 내화학성시험, 어독성시험, 화학성분 분석 등의 실험으로 비교 분석 하였다. 일축압축 시험결과 재령 28일 강도는 MIS가 SGR재료에 비해 1.7배 크게 발현 되었고, 재령 40일 이후 SGR재료는 강도가 저하하는 반면 MIS는 지속적으로 증가하는 경향을 보였다. 내화학성시험 결과 MIS의 길이변화율이 물유리계주입재에 비해 10배~25배 작게 나타났다. 그리고, 어독성시험 결과 MIS가 물유리계주입재에 비해 친환경적임이 증명되었고, 화학성분 분석 결과 MIS 용출액이 물유리계주입재의 용출액에 비해 $Cr^{6+}$, Pb, Si 성분이 적게 검출됨을 확인할 수 있었다. 따라서, MIS 주입재는 기존의 SGR 주입재에 비해 고강도로 공기단축 및 기초지반의 구조적 안정성이 우수하며 친환경적이라 지하수오염 등의 문제도 적을 것으로 판단된다.

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친환경적인 무기질계 주입재(NDS)의 내구성에 관한 연구 (The Durability of Environmentally Friendly Inorganic Grouting Material(NDS))

  • 이혜진;이종휘;정경식;천병식
    • 한국지반환경공학회 논문집
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    • 제12권7호
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    • pp.49-56
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    • 2011
  • 현재 지반주입공법에 사용되는 약액으로는 물유리계가 주로 사용되고 있다. 그러나 물유리계를 사용한 약액주입공법은 현장적용에 있어서 내구성 저하, 강도 저하, 용탈 현상 등의 여러 가지 문제점을 가지는 바, 한시적인 차수용도로 사용될 수는 있으나 영구적인 지반보강 및 차수를 위해서는 본질적인 문제점을 가지고 있다. 본연구에서는 이러한 물유리계 지반주입재의 문제점을 해결할 수 있는 무기질계 지반주입재(NDS)의 환경영향평가 및 내구성을 규명하기 위하여 대표적인 물유리계 재료인 SGR 재료와 함께 일축압축강도시험, 어독성시험, 내구성시험, 침적 후 삼축투수시험을 실시하였다. 내구성시험 결과, 재령 28일 강도는 NDS가 SGR보다 1.5배 크게 나타났으며, 어독성시험 결과 SGR의 생존율은 50~70%, NDS는 100%로 나타났고 이는 NDS의 생존율이 SGR보다 더 높다는 것을 보여주었다. 따라서 시험결과를 종합해 볼 때 전반적으로 NDS가 SGR에 비해 내구성면에서 우수하며 친환경적임을 확인할 수 있었다.

일라이트와 이산화티탄을 활용한 콘크리트 블록의 수질환경개선을 위한 실험연구 (A Study on Experiment for Improvement of Water Quality in Concrete Block Using Illite and TiO2 Powder)

  • 허재원;강경수;김영수
    • 한국구조물진단유지관리공학회 논문집
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    • 제22권1호
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    • pp.115-122
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    • 2018
  • "일라이트와 이산화티탄을 활용한 콘크리트 블록의 수질환경개선을 위한 실험연구"를 진행하기 위해 모르타르 예비실험, 수질정화특성, 방오실험, 어독성 실험 및 실 콘크리트 블록 제조 후 관련 KS에 준한 실험을 진행한 결과 다음과 같은 결론을 얻었다. KS에 준한 콘크리트 블록의 성능평가 결과 전 조건에서 시험기준치의 압축강도를 상회하는 것으로 측정되었으며, 다공질구조의 일라이트 치환에 따른 흡수율 증가가 문제점으로 예상되었으나, 이산화티탄과 사전 혼합하여 치환함으로써 일라이트의 대형 공극내 이산화티탄이 정착함에 따라 흡수율 또한 문제가 없는 것으로 관찰되었다.