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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 110 for “"SUBSTRATUM"”.
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Substratum control of hepatocyte aggregate morphology
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1997.
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The Characterization of Biofilm Attachment to Metal Interfaces: Effects of Substratum Properties
… hypothesized that the material properties of the substratum (such as the micro-structure) have a significant impact on biofilm growth. To research this hypothesis, protocol was established in order to produce, analyze, and study biofilms in a static exposure system. Though simple, the static …
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Substratum Interactions Modulate the Interplay between Endothelial Cell Phenotype, Function, and Immune Recognition
… apically, cell density circumferentially, and substratum composition, stiffness, and texture basolaterally. Plasticity allows ECs to promote vascular homeostasis, and to interact with and modulate the immune system. Changes in endothelial state enable immune cells to migrate into the tissue to …
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Population Biology of the Tan Riffleshell (<I>Epioblasma florentina walkeri</I>) and the Effects of Substratum and Light on Juvenile Propagation
… growth and survival was compared between four substratum types (fine sediment, < 120μm; fine sand, 500 μm-800 μm; coarse sand, 1000 μm-1400 μm; and mixed sediment, < 1400 μm) and two light treatments in open versus covered recirculating troughs (2.8 m). Juveniles in fine sediment …
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Influence of Spatiotemporal Variables in Structuring the Nematode Community of a Freshwater System
… In particular, the influence of mo, season, and substratum type was considered. Substratum samples were collected, and nematodes were isolated, identified, and quantified. Prevalence, mean abundance, species richness, and the Shannon-Weiner diversity index (H’) were calculated for (1.) the …
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Habitat association and distribution of Nauticaris marionis at the Sub-Antarctic Prince Edward Islands
… marionis and sessile epibenthic assemblages and substratum types of the Sub-Antarctic Prince Edward Islands were investigated. Twenty five stations, varying in substratum type, depth and location on the shelf and slope around the islands were sampled photographically with a towed benthic camera …
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Coal waste deposition and the distribution of freshwater mussels in the Powell River, Virginia
… habitat for endangered species, quantify substratum composition and coal waste deposition, and to assess population trends during the last half century. Mussels were collected as far upstream as Powell River Mile (PRM) 167.4 near Dryden, Virginia. Endangered species were collected up to …
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Taxonomia e distribuição do gênero Isotomiella Bagnall, 1939 (Collembola, Isotomidae) na Floresta da Tijuca, Rio de Janeiro, RJ, Brasil
… frequent and characteristic species of each substratum was also obtained. The largest diversity and equitability of species happened at "Barracão" station and, the largest richness, at "Bom Retiro" station. Both the correspondence analysis and the multiple regression showed that the most …
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Factors influencing the development and mortality rate of shy and cat shark embryos in South African waters
… of 15.7 m - ? 28.8 and their preferred choice of substratum, onto which their eggs were singly attached, were seafans. H. pictus, on the other hand, laid their eggs at an average depth of 3.9 m - ? 15.9 and their preferred choice of substratum, onto which they attach their eggs predominantly in …
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The thermal implications and ecological consequences of coloration in selected species : tenebrionid beetles (Onymacris bicolor and Onymacris ungui cularis), Cape gannets (Morus capensis) and Cape cormorants (Phalacrocorax capensis)
… conduction, convection, beetle colour and substratum colour on body temperature were analysed. Results showed that body colour has no overall effect on body temperature. Black elytra are warmed more by visible radiation, but colour is not relevant to heat loss by convection, or to heat flux …
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Life history of the endangered dwarf wedgemussel, Alasmidonta heterodon (Lea 1829) (Pelecypoda: Unionidae), in the Tar River, North Carolina and Aquia Creek, Virginia
… cover, presence or absence of macrophytes, and substratum size were collected for dwarf wedge mussels at the Tar River and Aquia Creek. Microhabitat use differed between the sites, most significantly described by the following variables: distance from shore; turbulence; and velocity. Laboratory …
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Relation between tolerances and distribution of two species of Ephemeroptera
… on the nymphs and estimated 0.1 cm from the substratum surface. Choroterpes nymphs were dislodged by current speeds in excess of 0.3-0.4 m/sec estimated 0.1 cm from the substratum surface. Possible effects of flooding on nymphal populations of each species have been discussed in relation to …
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A efemeropterofauna do trecho ritral inferior do rio Campo Belo, Itatiaia, RJ: composição e distribuição, com aspectos biológicos e ecológicos das espécies de Americabaetis Kluge, 1992 (Insecta: Ephemeroptera: Baetidae)
… (riparian vegetation being the preferential substratum, with 353 specimens) and 143 specimens (litter from riffles being the preferential substratum the, with 97 specimens). The secondary production of A. alphus was 847.99 mg.m².year¹ and that of A. longetron was 13,549.757 mg.m· ².year ¹ dry …
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Regulation of integrin-mediated linkages during cell migration
… remains a constant, biphasic function of cell-substratum adhesiveness. We can regulate cell speed by varying the number and nature of cell-substratum bonds. The mechanism of cell-substratum detachment is also different as cell adhesiveness varies. At low adhesiveness integrin-ECM bonds …
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Marine ecosystem classification and conservation targets within the Agulhas ecoregion, South Africa
… of these communities was mostly influenced by substratum type, longitude, trawling intensity, depth, and presence of visible particulate organic matter. The combined interactions of topography, substratum and the unique hydrodynamic conditions along the Agulhas ecoregion shelf-slope transition …
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An ecological study of the macro-invertebrate fauna of the Eerste River, Western Cape Province, South Africa
… South Africa. Its upper reaches have a stony substratum, and can be divided into three physical/biotic zones: The Mountain Stream, Upper River and Lower River zones. Investigations of the abundance, biomass, species diversity and species composition of the benthic macro-invertebrates in the …
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Influences of the abalone Haliotis midae on subtidal benthic communities
… living on shell versus surrounding rock substratum, and (c) removal experiments using field exclusion/inclusion plots.
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Lung tissue engineering : in vitro synthesis of lung tissue from neonatal and fetal rat lung cells cultured in a three-dimensional collagen matrix
… engineering and investigated the effect of this substratum on the formation of lung histotypic structures in vitro. A cell isolation procedure was developed whereby 19-days gestation type II alveolar cells reaggregated to form alveolar-like structures. The effects of selected scaffold design …
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新加坡华语中的方言词融合程度 = INTEGRATION OF DIALECT WORDS IN SINGAPORE MANDARIN
… in the high occurrence of highly integrated substratum words and local cultural influence also gives rise to dialect cultural words and keywords which are highly integrated predominantly. The influence of Hong Kong and Taiwan media, especially newspaper reports, has resulted in the occasional …
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