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      • 三槽式便所를 設置한 濟州道內 一部落民의 寄生蟲感染率 推移

        蘇鎭琸,李根泰,鄭坪林,李在興,李定熙,金英漢,洪淳億 최신의학사 1968 最新醫學 Vol.11 No.8

        Three compartment stool tank system was established in March, 1965 to each of the houses . of Yongheungri, Cheju-do. The trend of parasites prevalence, faithfulness of the people to paractice the system and effectiveness of the system for destruction of ascaris eggs were examined. 1. Only 22 houses among 65 utilized the system for 3 years. The remained 43, gave up to practice; 10 because of the destruction of the cemented tank and 33 due to the shortage of. food stuffs, for hogs. In this island, the people have been raised hogs with human excrets. 2. The prevalence of ascaris infection in the village and in Sinwom-ri, a control village where the human feces were used as food stuffs for hog, were as follows: Yongheung(%) Sinwom(%) March 1965 before medication 52.0 43.0 Dec. 1965 after medication 15.1 21.2 Feb. 1968 22.7 30.8 3. Ascaris eggs in the 3rd compartment, were destroyed 94-100%, whereas the eggs in semi-formed feces in hog sty survived 94%.

      • KCI등재SCOPUS
      • KCI등재

        곤쟁이 , Neomysis awatschensis 의 에너지수지에 미치는 PCBs 의 영향 1 . 곤쟁이에 미치는 PCBs 의 급성 및 만성영향

        진평(Pyung Chin),신윤경(Yun Kyung Shin),전은미(Eun Mi Jeon) 한국수산과학회 1998 한국수산과학회지 Vol.31 No.1

        Acute and chronic responses to PCB toxicity of Neomysis awatschensis were studied by measurement of bioassay, growth, oxygen consumption and nitrogen excretion with concentrations of PCB at 10 and 20℃. 96 hr.-LC_(50) at 10 and 20℃ were 28.7492 ppb and 10.6742 ppb, respectively. Survival rates during 60 days exposured to chronic PCB concentrations of 0.5 ppb, 1.0 ppb, 1.5 ppb and 2.0 ppb at 10℃ were 85%, 80%, 75% and 75%, respectively and survival rates at 20℃ 85%, 75%, 75% and 65%, respectively. Average daily growth rate of N. awatschensis exposed to chronic PCB concentrations at 10℃ were 0.039㎜/day in control group and 0.036㎜/day at concentration of 2.0 ppb, while their rates at 20℃ showed 0.072㎜/day in contral group and 0.039㎜/day at 2.0 ppb. The growth factors were some similarities between the chronic PCB concentrations, but intermolt periods were related to body size of mysids, temperature and PCB toxicity. Changes in oxygen consumption and nitrogen excretion rates during 60 days exposure to PCB toxicity showed higher in high groups of PCB concentrations. Assimilation and feeding rates of N. awatschensis fed Anemia sp. decreased with increase of PCB concentration at 10 and 20℃.

      • KCI등재

        곤쟁이 , Neomysis awatschensis 의 에너지수지에 미치는 PCBs 의 영향 2 . 에너지수지에 미치는 PCBs 의 영향

        진평(Pyung Chin),신윤경(Yun Kyung Shin),전은미(Eun Mi Jeon) 한국수산과학회 1998 한국수산과학회지 Vol.31 No.1

        Analysis of energy budget in Neomysis awatschensis exposed to PCB toxicity was carried out by measurement of bioassay, growth, oxygen consumption, nitrogen excretion at 10 and 20℃. Energy contents of the body, molted exoskeleton and eggs, which measured to understand used energy for growth, molt and oxygen consumption were 5.52㎈/㎎, 2.17 ㎈/㎎ and 6.15㎈/㎎, respectively. Feeding energies at 10℃ were 3.755㎈ in control group and 3.420㎈ at 2.0 ppb concentration, of them, 70.19% and 67.53% of their energies were assimilated. At 20℃, feeding energies were 5.998㎈ in control group and 4.166㎈ at 2.0 ppb concentration. The assimilation efficiency of the mysid estimated by ash-ratio method ranged between 71.5-67.5%, and 73.4-70.5% with PCB toxicity at 10℃ and 20℃ respectively. Energy used by respiration of total assimilated energy was 45.78% in control group and 62.27% in 2.0 ppb concentration at 20℃, and energy used by metabolism was high 2.0 ppb concentration than control group.

      • Age Studies on the Butter Fish Population from Southwestern Waters of Korea

        Han, Pyung Chin The Korean Society of Oceanography 1973 韓國海洋學會誌 Vol.8 No.2

        The present paper concerns the age determination and growth of butter fish, Pampus argenteus from the southwestern waters of Korea by otolith reading. 743 specimens taken by stow-net in the southern part of the Yellow Sea and northeastern part of the East China Sea during the period from October 1972 to September 1973 were examined. Results of the study are summarized as follows: 1. Sex ratio of females to males was found to be 2:1. 2. Ring marks on the otolith were found to be formed twice a year, once during the period of January-May and the other time in September. 3. The Lee's phenomenon was observed on the otolith sample. 4. The relationship between the radius of otolith(R) and fork length(L) was found to be as follows: R=0.3069+0.0133L 5. Calculated fork length at the time of otolith ring formation are found to be as follows:I-ring,71.67mm; II-ring, 125.05mm; III-ring, 168.65mm; IV-ring, 201.74mm; V-ring, 225.80mm; VI-ring, 240.84mm. 6. Maximum fork length calculated according to the diagram of Walford's growth transformation was found to be 281.5mm. 7. Growth curve, when related to the von Bertalanffy's equation, was laid out as $L_{t}=281.5[1-e$^{-0.674(t-0.128)}]$

      • SCOPUSKCI등재

        Chlorella Mitochondria의 Oxidative Phosphorylation에 대한 Ascorbic Acid 및 IAA의 작용성에 관하여

        이영록,진평,Lee, Yung-Nok,Chin, Pyung 한국미생물학회 1964 미생물학회지 Vol.2 No.1

        Lee, Yung Nok and Chin, Pyung (Dept. of Biology, Korea University, Seoul, Korea) : Action of ascorbic acid indoleacetic acid on the oxidation of succinate and coupled phosphorylation in Chlorella mitochondria. Kor. Jour. Microbiol., Vol.2, No.1, p12-16 (1964) Mitochondria were isolated from Chlorella ellipsoidea and the action of ascorbic acid and indoleacetic acid on the succinate oxidation and coupled phosphorylation in mitochondria suspension were examined. Oxidation of succinate used as substrate, and phosphorylation coupled to oxidation were strikingly enhanced by the addition of ascorbic acid, while in case of indoleacetic acid it were a little. In a view of phosphorylative efficiency, P/O ratio resulting from the addition of ascorbic acid was decreased and it may be considered as the result of a partial oxidation of ascorbate in mitochondria.

      • KCI등재
      • 곤쟁이 Neomysis awatschensis의 營養과 代謝

        陳平 釜山水産大學校 1974 釜山水産大學 硏究報告 Vol.14 No.1

        Neomysis awatschensis의 生化學的 組成과 呼吸 및 室素批泄量의 季節的 變化를 追跡하였다. 1. 簪白質은 乾분重의 平均 71%로서 높고, 一般的으로 年中 變動이 적으나 1月과 2月에 多소 낮았다. 2. 總脂肪量은 乾분重의 平均 12%이고 年中 季節的 變動이 輕微하나, 11月과 12月 및 3月과 4月에 현저히 減少하였다. 3. 炭水化物의 含量은 平均 2.0%로서 매우 낮은데 年中 變動이 거의 없으나, 11月 내지 2月에 걸쳐 多少 減少되었다. 4. 呼吸率은 15℃에 있어서 1月과 2月에 가장 낮고 5月과 8月에 상당히 增加하였다. 5. 批泄室素量은 12月 이후 현저히 減少하여 1月과 2月에 가장 낮고 4월에 增加하였다. 다시 6月과 7月에 多少 減少한 이후 점차로 增加하여 8月 이후 12月에 이르기 까지 비교적 높은 程度를 維持하였다. The chemical composition, respiration and nitrogen excretion of the mysid, Neomysis awatschensis were determined at monthly intervals for one year. Protein was high, approaching 71% of the dry weight, and was generally constant throughout a year but slightly decreased in January and February. Total lipid content was 12% of the dry weight. There were significant decreases in November, December, March and April. Carbohydrate content was very low, being 2.0% of the dry weight but declined in November, December, January and February. The respiratory rate at 15℃ declined sharply in January and February but increased markedly in May and August. Nitrogen excretion declined sharply to low levels in January and February but increased in April. Nitrogen excretion decreased again in early summer and increased gradually from late summer to autumn, and retained constant level until December. The relative proportion of oxygen utilized to nitrogen excreted was different from season to season.

      • KCI등재

        조피볼락 , Sebastes schlegeli 의 초기생활사 동안 생존율 향상을 위한 생물학적 연구 : 3 . 성체 소화관의 미세구조 3 . Ultrastructure of the Adult Digestive Tract

        진평,김학균,신윤경,이정식 한국어류학회 1998 韓國魚類學會誌 Vol.10 No.1

        조피볼락의 소화관은 인두, 식도, 위, 장, 항문 그리고 10∼11개의 유문수로 이루어져 있다. 유문수는 위의 유문부 말단에서 유래하며 바나나 형태의 맹낭을 형성하고 있다. 어체 체장에 대한 식도에서 항문까지의 소화관 길이의 비(relative length of gut: RLG)는 1.56(n=10)이다. 식도의 근육층은 바깥쪽의 얇은 종주근층과 안쪽의 두꺼운 환상근충으로 구성된다. 점막상피층은 정단부에 짧은 미세융모를 가진 원주상피로 구성되며, 다수의 점액분비세포들을 가진다. 위의 점막주름은 규칙적으로 배열되었으며, 근육층은 종주근, 사주근, 환상근층으로 구성된다. 위선의 주세포는 관상의 미토콘드리아와 소포체 그리고 전자밀도가 높은 다수의 분비과립을 가지지만, 부세포는 소형의 미토콘드리아와 소포체 그리고 전자밀도가 낮은 액포를 가진다. 유문수와 장의 점막상피층은 주로 원주상피세포, rodlet cell 그리고 dark cell로 구성 된다. 흡수기능을 가진 원주세포들은 발달된 미토콘드리아, 소포체, 전자밀도가 높은 과립상 물질, 음작용포 그리고 다포체를 가진다. Rodlet cell은 발달된 cytoplasmic capsule을 가지며 세포질에는 소포체가 잘 발달되어 있다. Dark cell의 세포질에는 전자밀도가 높고, 미토콘드리아들이 잘 발달되어 있다. 원주상피세포는 세포연접이 발달되어 있고, 상부에는 미세융모가 잘 발달되어 있으며, 미세융모의 내부에서는 세포질에서부터 시작된 actin filament를 관찰할 수 있다. 장 상피의 미세융모는 유문수의 미세융모 보다 길며, 배상세포의 수도 정상피에 더 많다. The digestive tract of the roekfish, Sebastes schlegeli composed of pharynx, esophagus, stomach, intestine, anus and ten or eleven pyloric caeca. Pyloric caeca is blind sac of banana shape, and that is originated from pyloric portion of the stomach. The relative length of gut(RLG), that is length of digestive tract to standard length, is about 1.56(n=10). Esophageal muscularis consists of thin outer layer of longitudinal muscle and thick inner layer of circular muscle. Mucosal epithelium consists of columnar epithelium with short microvilli and contains numerous mucous secretory cell. The mucosal folds of the stomach are regular, and the muscularis consists of longitudinal, oblique and circular muscle layer. The chief cell of the gastric gland have a tubular mitochondria, endoplasmic reticula and numerous secretory granules in electron - dense. However, parietal cell contains small mitochondria, endoplasmic reticula and vacuoles in low electron density. Mucosal epithelium of the pyloric caeca and intestine composed of columnar epithelium, goblet cell, rodlet cell and dark cell. Columnar absorptive cell in the pyloric caeca and intestine contains well developed mitochondria, endoplasmic reticula, vesiculated granules in high electron density, pinocytotic vesicles and multivesicular body. Rodlet cell have a well developed cytoplasmic capsule and the endoplasmic reticula in the cytoplasm. Dark cell showing a high electron density in the cytoplasm and contains well developed mitochondria. Columnar epithelium of the intestine have a well developed intercellular junction and the microvilli which contains actin filament originated from the cytoplasm. Mucosal epithelium of the intestine have a longer microvilli and more abundant goblet cells than in the pyloric caeca.

      • KCI등재

        망상어 , Ditrema temmincki 소화관(消化管)의 형태 , 조직화학적 특징

        진평,이정식 한국어류학회 1995 韓國魚類學會誌 Vol.7 No.2

        망상어, Ditrema temmincki 소화관의 형태 ·조직화학적인 특징은 다음과 같이 요약할 수 있다. 체장에 대한 식도에서 항문까지의 소화관 길이의 비 (RLG)는 0.89정도이며, 소화관에는 식도와 담관 입구사이의 팽창부인 胃가 없다. 소화관은 형태 · 조직화학적인 특징에 의하여 식도, 식도-장이행부, 전장, 중장, 후장, 장 - 직장 이행부, 직장, 직장 - 항문이행부, 항문으로 나눌 수 있다. 점막주름은 직장에서 가장 복잡한 형태를 보이며, 근육층은 식도와 항문에서 발달된 상태를 나타낸다. 점막주름의 상피층은 식도 전방부에서는 입방세포로 구성되며, 나머지 부위 에서는 원주상피로 구성된다. 소화관에는 PAS 반응에 양성을 나타내는 배상세포와 다당류 흡수세포 (Polysaccharid Absorptive Cell)가 관찰되는데, 후자는 다당류 계통의 영양물질의 흡수기능을 가진다. 망상어 소화관에서 다당류 계통의 영양물질은 주로 후장부에서 흡수된다. Morphology and histochemical characteristics of the alimentary tract in surfperch, Ditrema temmincki were investigated by histological observation. The relative length of gut(RLG) in surfperch, that is the postpharyngeal portion of the alimentary tract, is about 0.89 to standard length. The absence of a stomach, which is the part of expantion of the alimentary tract between esophageal end and the entrance of the bile duct into the intestine, was observed. The alimentary tract is divided into the esophagus, esophageal-intestine part, anterior intestine, mid intestine, posterior intestine, intestino-rectum part, rectum, rectal-anus part, and anus by morphology and histochemical features. Morphology of mucosal folds is the most complexity in the rectum and the tunica muscularis of the esophagus and anus is more advanced than those of other parts. The epithelial layers of mucosal folds consist of columnar epithelium except for cuboidal cells of the anterior part of the esophagus. The goblet cells and polysaccharide absorptive cells were observed in the alimentary tract. Nutritive polysaccharide is mainly absorbed by the absorptive cells in the posterior intestine of the surfperch.

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