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        동자개(Pseudobagrus fulvidraco)와 밀자개(Leiocassis nitidus)피부점액세포의 조직화학(Bagridae , Silurlformes)

        김용호,이충렬,제갈승주 한국어류학회 2001 韓國魚類學會誌 Vol.13 No.2

        동자개과(Bagridae) 어류에 속하는 동자개(P. fulvidraco)와 밀자개(L. nitidus)의 3부위(등면, 측면 그리고 배면)의 피부 점액세포를 광학현미경하에 조직화학적인 방법으로 조사했다. 각 종의 피부에 존재하는 점액세포를 PAS, AB-PAS 그리고 HID의 염색방법을 통해 비교해 본 결과, 두 종간에 점액세포의 성분적 차이를 발견할 수 없었고, 그러나 조사 부위에서 점액세포의 위치, 형태, 크기 그리고 수에 있어서 차이가 존재했다. 동자개의 점액세포들은 편평상피세포층과 상피의 alarm substance cells(ASCs)층에 존재했다. 그러나 밀자개의 점액세포들은 편평상피세포층에만 존재했다. 상피의 ASC층에 존재하는 점액세포는 편평상피세포층에 존재하는 것보다 상대적으로 더 컸다. 편평상피세포층에서 두 종간 각 부위의 점액세포의 평균수는 이분산 T-test에 의해 인정되었고, 등분산 T-test에 의한 동자개의 두 층의 점액세포간의 평균수는 차이가 인정되지 않았다. 그리고 이분산 T-test에 의한 동자개와 밀자개 상피의 ASC 평균수는 등면과 배면에서만 차이가 인정되었다. Skin mucous cells in the three regions of the body in Pseudobagrus fulvidraco and Leiocossius nitidus were investigated using three histochemical methods (PAS, AB-PAS and HID). In the two species, components of mucous cell were not distinguished in each region, but presented a differences in position and type, size, and count in all regions. Mucous cells of P. fulvidraco were located in two layers, a superficial epithelial cell and the space within alarm substance cells (ASCs). Mucous cells of L. nitidus were situated only in the superficial epithelial cell layer. The size of mucous cells in the ASC layer were larger than those of the superficial epithelial cells for all measured values: diameter, length, width, and area. In the superficial epithelial cell layer, the average number of mucous cells within the three regions did not differ significantly between species by unpaired T-test, but the average number of those within two cell layers of P. fulvidraco had a similarity at each region by paired T-test. The dismilarity in dorsal and ventral regions in average number of ASCs between P. fulvidraco and L. niditus was confirmed by unpaired T-test.

      • 일차부등식의 문제 해결과정에서 발생하는 오류유형분석 : 중학교 교육과정을 중심으로

        김용호 공주대학교 과학교육연구소 2001 과학교육연구 Vol.32 No.1

        본 연구는 일차부등식의 풀이과정에서 발생하는 오류를 유형별로 분류하여 봄으로써 실제 교수학습에서 참고가 되도록 하였다. 학생들이 범한 오류를 7가지 형태로 분류하여 보면, 오용된 자료(14.6%), 잘못해석된 문제(15.0%),논리적으로 부적절한 추론(2.7%),곡해된 정리 혹은 정의(22.1%), 요구되지 않은 해답(22.4%),기술적인 오류(17.5%), 풀이과정의 생략(2.7%)이다. 위와 같은 오류 분석을 통해, 교사가 학생을 가르칠 때 미리 오류를 파악하여 예측하고 가르친다면 학습의 효과가 휠씬 빠르고 능률적일 것이다. This study accordingly brought the analysis of the error into focus to instruct the liner inequality efficiently. Students, in result, committed errors: misused data(14.6%), misinterpreted problem(15.0%), logically invalid inference(2.7%), misunderstood theorem or definition(22,1%), unmatched solution(22.4%), technical error(17.5%), omission of solving process(5.7%). Therefore, if an instructor gives lessons to the students studying the instructive methods in order not to make errors about the contents mentioned above, it will help students understand much faster and arouse their curiosities and interests in lessons, and so they will take lessons willingly.

      • 기상요인이 콩 생육에 미치는 영향

        김용호 순천향대학교 기초과학연구소 2001 순천향자연과학연구 논문집 Vol.7 No.1

        This study was conducted to investigate how agronomic characters are affected by climatic factors and to determine how soybean genotypes differ in the responses. Seventeen soybean varieties selected for regional trial test were studied at six locations of Korea, 1999. There were wide climatic effects in seed yield and 100-seeds weight. The 100-seeds weight environment was characterized by growth duration and amount of precipitation whereas the other characters were not distinguished well. In correlation coefficient, 100-seeds weight showed that all varieties responded positively to growth duration but they responded negatively to rainfall. Environmental variations in 100-seeds weight and seed yield were larger than genetic variation. But genotypes also may greatly differ in degree of sensitivity to each climatic variable. It indicates that growth and development of soybean is affected by interaction between genotypes and climatic factors.

      • 독일의 셰익스피어 수용과 고전문학기 연극의 발전

        김용호 영산대학교 2002 영산논총 Vol.9 No.-

        Shakespeare in Deutschland ist der interessanteste und ergiebigste Teil der literarischen Beziehungen zwischen England und Deutschland. Der gro¨ßte Dramatiker der elisabethanischen A¨ra wurde seit der Mitte des 18. Jahrhunderts von fu¨hrenden Schriftstellern und Kritikern Deutschlands als ein genialer Dramatiker weltliterarischen Formats erkannt und gewu¨rdigt. Die Diskussion u¨ber seine Dramen und ihre Aufnahme haben in Ku¨rze auf die Entwicklung der deutschen Nationalliteratur so stark gewirkt, daß jede wissenschaftliche Bescha¨ftigung mit der Dramatik, Theatergeschichte und Literaturtheorie Deutschlands Shakespeare und seinen Einfluß nicht umgehen kann. Im vorliegenden Beitrag geht es darum, die Auseinandersetzungen u¨ber Shakespeare in der Blu¨tezeit der klassischer deutschen Literatur, zwischen Aufkla¨rung und Spa¨tromantik also, als einen Modellfall produktiver und reproduzierender Rezeption festzustellen und auf dessen Beispielhaftigkeit fu¨r die Folgezeiten hinzuweisen. In der Anfangsphase der Shakespeare-Aneignung stand "die Querelle des Anciens et des Modernes" im Mittelpunkt der Diskussionen: Es wurde immer wieder u¨ber seine Na¨he zur Antike oder seine Modernita¨t diskutiert. So erblickte Lessing die Gro¨ße Shakespeares darin, daß er mittels seiner ungewo¨hnlichen Charakteristik und der Sprache der Leidenschaft jene von Aristoteles geforderte

      • 재배콩과 야생콩 교잡 후대의 세대진전에 따른 종실 관련 특성 변화

        김용호 순천향대학교 기초과학연구소 2001 순천향자연과학연구 논문집 Vol.7 No.2

        Limited genetic diversity in a croop species may restrict the amount of genetic improvement that can be achieved through plant breeding. Genetic improvement of the cultivated soybean [Glycine max (L.) Merr] may be possible through hybridization with its wild progenitor, G. soja sieb. & Zucc. The single corss, G. max (Hwangkeumkong) x G. soja (IT. 182932), was made in the summer of 1997. Visual appearance of seed is major commercial importance in soybean. Wild species soybean typically has a black seed coat and small size. The heritability of traits contributing to the appearance and the presence of linkages with any undesirable trait are, therefore, some importance to establishing how easily advantage might be taken from wild germplasm in soybean improvement. One-hundred seeds weight was increased gradually through generations advanced from F_2 to F_4. In this cross, the wild-type seed coat traits were dominant, and were expressed in the seed of F_1 plants, with segregation in seed of the F_2 giving rise to visual seed phenotypes. So the seed coat pigment ranged from light yellow to dark brown/black, often of the same individual. And semicultivated soybean had some desired characteristics including tolerance to adverse environments and multi-seed characters. It means the infusing of semicultivated germplasm to the cultivated soybean could enhance selecting potential on yield.

      • 샌드블라스팅용 그린테이프를 이용한 PDP 격벽형성에 관한 연구

        金龍浩,金容奭 弘益大學校 科學技術硏究所 2002 科學技術硏究論文集 Vol.13 No.-

        In this study, an attempt was made to manufacture the barrier ribs of plasma display panel by sandblasting laminated green tapes. The effects of processing parameters including pre-baking temperature, binder and pore contents on the etching rate of the green tape were investigated. In this results, It is possible to control the sand blasting etching rate by changing the green tape properties and to prevent the formation of under-cutting phenomenon in manufacturing the barrier ribs for PDP.

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