• 한국윤활학회:학술대회논문집
• /
• 한국윤활학회 2004년도 학술대회지
• /
• pp.362-366
• /
• 2004

Quantitative evaluation of substrates for cells is essential to understanding cell-material adhesive interaction and it is also necessary for the development of new biomaterials. Many cells on adhesive molecules will form an organization of actin into bundles and production of the large, highly organized structures termed focal adhesions. To better understand adhesion formations between cells and substrata, we have quantified the force required to displace attached cell. we allowed rabbit knee chondrocyte to attach on a substratum of microscope slide glass. Our results demonstrate that a force is required to detach cells is changed according to detachment time variation.

• 한국물환경학회지
• /
• 제32권1호
• /
• pp.1-14
• /
• 2016

This study was conducted to develop a Benthic macroinvertebrates streambed index (BMSI) based on the response of the community to the substrate type of streambed. Analyzing the seasonal (Spring and Fall) data (11,367 sampling units) surveyed and collected during 2008~2014 at 960 sites in South Korea, we estimated the lithophility of 191 taxa. BMSI was composed of the lithophilic value, indicator weight value and individual abundance frequency. It showed an extremely significant correlation (r = -0.8, p<0.001) with the mean grain size (in phi-value) of the streambed.

• Journal of Plant Biology
• /
• 제19권4호
• /
• pp.111-118
• /
• 1976

The marine algal vegetation of spring season in the intertidal belt of Jeju Island, Korea, was carried out by the quadrat method at 4 transects; Moseulpo, Kangjeong, Whabug, and Hado in 1976. The transects were divided into 5 stations by exposed frequencies of the substratum from water, such as more than 50%, 46-49%, 28-45%, 7-27%, and less than 6%. As a result, the algal vegetations were separated into three groups, high, middle and low algal communities. The representative dominant species of each group are aas follows. High algal community: Porphyra suborbiculata, Bangia fusco-purpurea, Gloiopeltis furcata. Middle algal community: Ishige okamurai, Hizikia fusiforme, Corallina pilulifera, Sargassum thunbergii. Low algal community: Sargassum ringgoldianum, Sarg. confusum. The coverage of these groups is 43.5, 57.6%, and 77.3%, respectively.

• 한국디지털건축인테리어학회논문집
• /
• 제10권3호
• /
• pp.63-71
• /
• 2010

The Ottoman dynasty destroyed the Byzantine Empire by occupying Constantinople established the Ottoman Empire and renamed to Istanbul in 1453. Contrary to Islam, the research about Byzantine architecture have an abundant data. Because of the indifference to Islam, there is need today for this sort of study. Islam believe the Biblical Old Testament, I should like to know what is reason for resemblance of the Christian Aya sopia, what is difference in the floor plan between Islam and Judaism. This research applies to the Courtyard type Mosques of SINAN aesthetically completed the Mosque Architecture as a respected architect in 15th century. This study is to investigate the relationship of Orthodox Eastern Church and Islam Mosque within the limit of Istanbul that access is easy and have Christian religion by substratum culture among the many countries that Islam does by diplomatic relations.

• Journal of Species Research
• /
• 제7권1호
• /
• pp.92-96
• /
• 2018

In 2017, during a survey of the anthozoan fauna in the Hallyeohaesang National Park in the South Sea, several Acanthogorgia specimens were collected from the subtidal zone. Through taxonomic analysis, one species, Acanthogorgia densiflora $K{\ddot{u}}kenthal$ & Gorzawsky, 1908, was found to be previously unreported from Korea, and was, therefore, newly added to the list of Korean anthozoan fauna. This species is distributed on the slopes of the rocky substratum between depths of 14 and 24 m. Including the findings from this study, ten species of the genus Acanthogorgia have thus been reported from the Korean waters until now.

• 지질공학
• /
• 제3권1호
• /
• pp.63-74
• /
• 1993

모르따뉴강 유역에서는 그 지질에 따라서 지형이 많은 차이가 있다. 사암 및 역암이 분포하는 상류는 기복이 크고 경사가 급하여 산림이 큰 부분을 차지하고 있다. 기후도 지형의 영향을 받아 상류지역에서는 기온이 낮고 강수량이 많다. 이들 요인에 따라서 월 유출량과 첨두유량이 상류와 하류에서 다르게 나타난다. 이는 매우 상식적이고 당연한 현상인 듯 하지만 앞으로 좀더 면밀하게 연구하면 이들 지질에 따른 제요인과 유출현상과의 관계를 정량적으로 파악할 수 있다는 가능성을 제공하는데 이 연구의 목적이 있다.

• Animal Systematics, Evolution and Diversity
• /
• 제29권2호
• /
• pp.160-174
• /
• 2013

Soft corals were collected from the subtidal zone in the coastal regions of Jejudo Island between 1975 and 2010. By the taxonomic work on them, three species in the subgenus Dendronephthya (Dendronephthya) and one species in the subgenus Dendronephthya (Roxasia) of family Nephtheidae were newly added to Korean fauna: Dendronephthya (Dendronephthya) aurea Utinomi, 1952, Dendronephthya (D.) koellikeri K$\ddot{u}$kenthal, 1905, Dendronephthya (D.) mucronata (P$\ddot{u}$tter, 1900), and Dendronephthya (Roxasia) decussatospinosa Utinomi, 1952. These species are mainly distributed on the rocky substratum at the southern coast from 10 and 32 m. As a result of this study thirteen species in the genus Dendronephthya have been reported from Korean waters until now.

• 한국농공학회:학술대회논문집
• /
• 한국농공학회 2000년도 학술발표회 발표논문집
• /
• pp.78-83
• /
• 2000

Over twenty thousand types of bryohytes are existed in the world. Bryophytes are generally considered to be primitive plants and seriously neglected by even in botany area. Bryophytes includes mosses, liverworts, and hornworts. They thrive in humid environments and require water to survive. Some types, however, can recover after serious dehydration, even after years of complete dehydration. They generally absorb water and nutrients not from roots which is called rhizoid, but through entire body. The rhizoids are nonchlorophyllose fillamentous branches and attach the body to substratum such as soil and rocks. The attachment of mosses in soil surface provides a good protection from soil erosion by runoff water. In this presentation, reviewed and discussed are ecological characteristics and engineering perspectives of mosses, particularly with respect to soil and water conservation.

• Animal cells and systems
• /
• 제4권1호
• /
• pp.57-62
• /
• 2000

Soil samples were collected in thirteen Manitoba boreal forest sites. Spatial distribution of chytrids from diverse boreal forest microhabitats was investigated by baiting with jack pine pollen. After baiting, the pollen was surveyed for chytrids for 8 ten day period and individual species were counted. Total infestations of pollen by chytrids ranged from 5.8% to 90.2% from various soils. Each site with high infestation was characterized by litter with high needle content while mineral soil or soil with limited organic matter yielded low levels of pollen infestation. Species diversity tended to be higher in soils with higher pollen infestation and lower in soils with lower pollen infestation. Lower diversity was generally observed in mineral soils or soils with a limited organic horizon comprised, in part, of broad leaf litter. Based on coefficients of association and species in common among species across the collection sites, it was possible to relate dominant species assemblages in site groups. These species assemblages in the site groups suggest that the chytrids are distributed by litter and soil types. It can be concluded that the substratum characteristics of litter types and availability of litter may be important in describing chytrid distribution in boreal forest sites.

• Geomechanics and Engineering
• /
• 제23권6호
• /
• pp.547-560
• /
• 2020

This paper studies the dynamic foundation-soil-foundation interaction for two square rigid foundations embedded in a viscoelastic soil layer. The vibrations come from only one rigid foundation placed in the soil layer and subjected to harmonic loads of translation, rocking, and torsion. The required dynamic response of rigid surface foundations constitutes the solution of the wave equations obtained by taking account of the conditions of interaction. The solution is formulated using the frequency domain Boundary Element Method (BEM) in conjunction with the Kausel-Peek Green's function for a layered stratum, with the aid of the Thin Layer Method (TLM), to study the dynamic interaction between adjacent foundations. This approach allows the establishment of a mathematical model that enables us to determine the dynamic displacements amplitude of adjacent foundations according to their different separations, the depth of the substratum, foundations masss, foundations embedded, and the frequencies of excitation. This paper attempts to introduce an approach based on a polynomial mathematical tool conducted from several results of numerical methods (BEM-TLM) so that practicing civil engineers can evaluation the dynamic foundations displacements more easy.