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      • 한반도 및 동아시아의 지질구조 발달과 板구조이론(Ⅰ) : 동아시아의 지체구조와 단층계 Tectonic Structures and Fault Patterns of East Asia

        김인수 부산대학교 1985 자연과학논문집 Vol.40 No.-

        The east asiatic continent is composed of at least ten tectonic blocks or microplates by ophiolites, ultramafics, flysch deposits, subduction zonemelanges, high pressure metamorphic rocks, island arc volcanics and thrust belts. Palaeomagnetic data available from several of these blocks show that they moved independently in the course of geologic time from precambrian and welded together by the end of cretaceous except the kamchatka block which seems to have been welded slightly later to the continent complex. The age constraints from the palaeomagnetic and geochronological studies of the suture zone rocks provide the scene which is different from miyashiro's view that asiatic continent has been stabilized and grown systematically from the north to the south. This paper synthesizes and summarizes the complex collsion history of each tectonic block. This would be prerequisite to the understanding of the tectonic evolution of the Korean peninsula because it is claimed that the sino-korea block and the Yangtze block of china might be correlated to the kyonggi and ryongnam massifs of Korea respectively. The major fault patterns revealed from the ERTS imagery and traditional field work show that they can be categorized into three groups: those of the continental interior, of the eastern continental margin, and of the isaland arc. The faults in the continental interior were either the reactivated sutures between tectonic blocks or newly generated ones: in both cases through the collision and continual pushing of the indian plate against the asiatic complex. In addition, the collision of india caused also extension structures such as the baikal rift system and the east sea (sea of Japan). Most faults in the continental margin were generated originally by the rapid spreading at the kula-pacific ridge and the oblique subduction of the kula plate in the late cretaceous (110-85Ma)time. However, some younger ones such as the amur fault in sikhote alin is originated or at least reactivated by an absolute rotational motion of the asiatic continent toward the souch as substantiated by hot spot theory. The effect of this motion is concentrated especially at the continental margin rather than at the internal part. The faults in the Japanse isaland arc were formed by the variety of tectonic circumstances such as absolute rotational motion of the asiatic continent, northward pushing of the kula plate aginst the arc, and subduction of transform faults and seamounts. Some of these faults have intimate genetic connection with the east sea (sea of Japan). It has been demonstrated above that the theory of plate tectonics is a helpful implement to explain the tectonic evolution of east asia. For more detailed explanation of tectonic structures, we need, however, some modifications of the basic assumption of the theory which postulates perfectly rigid plates: on collision of two plates they do not behave so. The plate which has been welded together from several blocks will be reactivated along the old suture. This explains partially why orogenic activities activities occur repeatedly along the same line. In addition, a plate with large dimension experiences a tensional force in the remote region from the collision zone acting parallel to this suture trend. This is the cause of the opening of the baikal rifts and the east sea (sea of Japan). For further understanding of every aspects of tectonics of east asia, we need to consider the absolute motion of the plate also, as this should provide mechanism of marginal sea opening and the fault generation along the continental margins.

      • KCI등재
      • 체간미주신경절단술 및 유문성형술, 선택적미주신경절단술 및 유문성형술과 벽세포 미주신경절단술후 Histamine 자극이 위산분비에 미치는 영향에 관한 실험적 연구

        김인수,김세민 고려대학교 의과대학 1984 고려대 의대 잡지 Vol.21 No.1

        The goal of the therapy for peptic disease is to reduce the acid-pepsin secretion in ther stomach and the recurrence rate, and the parietal cell vagotomy is believed to be a suitable operation for this purpose. The purpose of this study is to report on the response of the gastric secretion after variable vagotomy procedures and to compare the response rate with the administration of histamine in each vagotomy procedures. The author carried out an experimental study on the gastric secretory response to histamine in total 23 mongrel dogs, 8 control group (gastrostomy), 5 truncal vagotomy with pyloroplasty group; 5 selective vagotomy with pyloroplasty group and 5 parietal cell vagotomy group. Gastric juice analysis was carried out 3 times on a monthly with the administration of histamine. The result are as follows: 1. In group of truncal vagotomy with pyloroplasty, the mean value of free acidity after 1 month, 2 month and 3 month of operation decreased by 70.4% 47.1% and 83.1% respectively in comparison with control group, and mean value of total acidity decreased by 32.1%, 24% and 53.1% respectively. The mean value of histamine-responded free acidity after 1 month, 2 month and 3 month of operation decreased by 24%, 43.7% and 48.3% respectively in comparison with control group and mean value of total acidity decreased by 9.4%, 21.2% and 38.8% respectively. 2. In group of selective vagotomy with pyloroplasty, the mean value of free acidity after 1 month, 2 month and 3 month of operation decreased by 18.5%, 41.3% and 25.9% respectively, in comparison with control group. The mean value of histamine-responded free acidity after 1 month, 2 month and 3 month of operation decreased by 27.1%, 45.4% and 46.5% respectively, in comparison with control group and mean value of total acidity decreased by 24.0%, 18.7% and 8.4% respectively. 3. In group of parietal cell vagotomy, the mean value of free acidity after 1 month, 2 month and 3 month of operation decreased by 40.7%, 70.4% and 57.7% respectively, in comparison with control group and mean value of total acidity decreased by 24.0%, 18.7% and 8.4% respectively. Then mean value of histamine-responded free acidity after 1 month, 2 month and 3 month of operation decreased by 33.7%, 25.1% and 63.8% respectively, in comparison with control group and mean value of total acidity decreased by 24.9%, 21.8% and 28.8% respectively. 4. In summary, average reduction rates of free acidity in truncal vagotomy with pyloroplasty, selective vagotomy with pyloroplasty and parietal cell vagotomy were 66.7%, 29.2% and 56.3% respectively, and average reduction rates of total acidity, 36.4%, +10.1% and 28.4% respectively. Average reduction rates of histamine-responded free acidity were 28.7%, 39.5% and 40.9% respectively, and histamine-responded total acidity, 23.1%, 17% and 25.2% respectively.

      • KCI등재
      • 高度科學技術社會를 위한 數學敎育

        金仁洙 全南大學校 師範大學 科學敎育硏究所 1989 科學敎育硏究誌 Vol.13 No.1

        Technological advances have influenced the very nature of the discipline of mathematics, both as a source of many new problems , but also as a tool for investigating these problems. Moreover, recent research findings in cognitive anthropology and developmental psychology support the feasibility of deeper goals of mathematics education and suggest some features of instruction that could be effective. In 1986, the NCTM established the Commision on Standards for Curriculum and Evaluation for School Mathematics, Grades K-12. The purpose of the Commision was to create an articulated vision of a school mathematics curriculum that would have the greatest potential to help students become mathematically powerful in our modern technological world. In this paper, first, I discuss the backgrounds of the needs for reformation of school mathematics education, second, I review the Knowledge Structure Program, cognitive model, mathematical knowledge and instruction settings, which are recent findings in cognitive research. Last I suggest some contents of mathematical education and methods of instruction on the basis of the working draft of the Standards Commision of NCTM.

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