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      • 마우스肝 構造에 對한 組織學的 및 組織化學的 硏究

        朴秀淵 中央醫學社 1940 中央醫學 Vol.9 No.2

        As the structural unit of the hepatic tissue, Wepfer (1664) and Malpighi (1666) termed the parenchymal units attached to the intrahepatic portal venules hepatic acini by the macroscopic dissection. Kiernan (1883) associated the three-dimensional structural unit of the liver with its secretory function. Brissaud and Sabourin (1886) reported the area of the hepatic parenchymal tissue draining into a bile duct in the portal trigone as the secretory unit of the liver. Mall (1906) proposed that the columnar structure around the portal field was the portal unit; he was supported by Arey (1932) and Opie (1944). Rappaport et al. (1954) defined the small irregular morular parenchymal tissue mass attached to the portal terminal venules accompanying with the intrahepatic arteries and bile duct in the livers of dogs and house rabbits as the structural and functional unit, of the liver, and called it the simple liver acinus. Rappaport (1958) termed the hepatic parenchymal tissue consisting of the simple liver acini around the preterminal portal vessel in man the complex acinus and the larger parenchymal tissue of the- simple liver and complex acini formed around the portal stem the acinar agglomerate. Recently the studies of the liver concerning the function of it in the histological and histochemical fields were carried out by many authors. Padykula (1953) reported that the patterns of distribution of hepatic mitochondria, Golgi apparatus and glycogen in various mammals, and the secretion of bile were associated with enzyme activity of hepatic succinic dehydrogenase in the histochemical way. Additionally he described the fact that his result was similar with them presented by Deane (1944), and Seligman and Rutenberg (1951). The technique, as presented by Wachstein and Meisel (1957), outlines bile canaliculi sharply and completely with the histochemical way of adenosine triphosphatase (ATP-ase) and diphosphatase (ADP-ase), as well as bile ducts, endothelium, and fibrous tissue, and can thus be effectively used as special stain for canaliculi, as well as an indicator of liver cell function. Smith and Coote (1863) studied the impairment of succinic dehydrogenase and other enzymes in the rat's liver given carbon tetrachloride in their histochemical study. Schumacher (1957) studied the action of respiratory enzymes; succinic dehydrogenase, cytochrome oxidase, triphosphopyridine nucleotide diaphorase and diphosphopyridine diaphorase in the livers of the horse, pig and cattle, and observed that the distribution was identical with the earlier reports on the former enzymes, but that it was in direct contrast to the former 2 enzymes in that the latter 2 enzymes were generally distributed to the pericentral area around the central vein. The author has attempted this experiment in order to study the hepatic structural and function unit of the mouse by observing the histological and histochemical or functional characters of the hepatic cells in different parts of hepatic lobule in the points; the distribution of mitochondria (2) the enzyme activity of succinic dehydrogenase (3) the enzyme activities of adenosine triphosphatase and diphosphatase, (4) the enzyme activities of diphosphopyridine nucleotide (NADH,) diaphorase and triphosphopyridine nucleotide (NADPH,) diaphorase, to accomplish the transfer of hydrogen from the reduced coenzymes to the cytochrome system and to other metabolic processes, and (5) the enzyme change of succinic dehydrogenase and histochemical change of hepatic glycogen of the mouse given carbon tetrachloride.

      • 대학교수의 활동에 대한 선호도의 조사연구

        박수연 이화여자대학교 한국문화연구원 1992 韓國文化硏究院 論叢 Vol.61 No.3

        This research seeks to find out what preferences college professors have in relation to their professional activities. The professional activities of professors are divided into four groups: (1) teaching activities; (2) research activities; (3) college administration activities; and (4) social service activities. The study is designed to find out what professional activities professors prefer and what relations the identified variables have with one another. A total of 300 professors were sampled to be interviewed for the study. The 300 sample interviewees were selected on the basis of (1) type of college; (2) academic discipline; and (3) rank of professors from the target population of professors in five major cities in Seoul, Taejon, Kwangju, Taegu and Pusan. The data were gathered through individual interviews. The prepared structured questionnaires were used for the interviews which were conducted by 15 trained interviewers. A total of 284 professors (96%), among the 300, allowed the trained student interviewers to interview them at their offices for about an hour each. The survey through the individual interview has been conducted during the period from April 27 through May 2, 1992. Using factor analysis techniques, four dimensions of faculty activities were identified as teaching, research, college administration and social service. The degree of preference in each item in the questionnaire was scored by rating on the basis of Likert-type scale with five response categories for each item, ranging from "like the least" to "like the most". The result of the research includes that professors prefer research-related activities the most among the four professional activities. Teaching-related activities follow research-related activities. Then, teaching-related activities and social service activities follow. College administration activities are least preferred. The study also observed whether the length of college teaching experience affects faculty preferences in their activities. As the length of teaching experience is getting longer, the preference for research activities decreases. Preference for teaching is positively related to the length of teaching experience. Teaching activities are, however, positively related to college administration activities. Those with a strong preference for research tend to participate in social service activities. At the beginning stage of teaching experience, the respondents show strong preferences for teaching and research. The professors who have taught for 13 to 15 years in college have stronger preferences for research, teaching and social service activities. However, those who have served for 20 years seem to have lost their desire to participate in all of the faculty activities. But those with more than 22 years of teaching experience express a rise in their preferences in every field of activities.

      • KCI우수등재

        가치일치와 직무 관련 변인 간의 관계: 정체성 융합의 매개효과

        박수연,임예지,이준배,이승민,박선웅 한국사회및성격심리학회 2023 한국심리학회지 사회 및 성격 Vol.37 No.3

        본 연구는 조직 내에서 구성원들이 지각하는 가치일치와 직무 관련 변인(직무 만족, 직무 열의, 이직 의도)과의 관계를 살펴보고, 그 관계를 정체성 융합과 조직 동일시가 매개하는지 확인하는 것을 목적으로 하였다. 가치일치는 구성원이 지각하는 개인과 조직 사이의 일치와 개인과 동료 사이의 일치라는 두 가지 측면을 각각 측정하였다. 연구 1에서는 조사회사를 통해 직장인 150명을 대상으로 가치일치, 정체성 융합, 조직 동일시, 그리고 직무 관련 변인들을 측정하였다. 연구 결과, 개인-조직 가치일치와 직무 만족, 직무 열의, 이직의도와의 관계를 정체성 융합이 매개하였다. 즉, 조직과 가치일치가 높다고 지각하는 직장인들은 조직과의 정체성 융합을 강하게 느끼고, 이에 따라 높은 직무 만족과 직무 열의, 그리고 낮은 이직 의도를 나타냈다. 정체성 융합의 간접효과는 개인-동료 가치일치와 직무 관련 변인들 간의 관계에서도 유의했다. 한편, 개인-조직 가치일치와 개인-동료 가치일치가 조직 동일시를 통해 직무 만족과 열의로 이어지는 경로는 유의했으나, 이직 의도에서는 조직 동일시의 간접효과가 유의하지 않았다. 연구 2에서는 대기업에 종사하는 직장인 148명을 대상으로 연구 1과 동일한 문항에 응답하게 하였다. 연구결과, 높은 개인-조직 가치일치 및 개인-동료 가치일치를 보고한 직장인들은 직무 만족과 열의가 높았고 이직 의도가 낮았는데, 자신과 직장 간의 높은 정체성 융합이 이 관계를 매개하였다. 반면, 개인-조직 및 개인-동료 가치일치와 직무 관련 변인들 간의 관계에서 조직 동일시의 간접효과는 개인-조직 가치일치와 직무 만족으로 이어지는 경로 외에 모두 유의하지 않았다. 종합적으로, 조직의 규모와 종류에 상관없이 조직 및 직장동료와의 가치와 자신의 가치가 일치한다고 지각한 사람들은 직장과의 정체성 융합이 높아 직무에 만족하고 열의가 높으며 이직 의도가 낮았다.

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