Index Catalog // ScholarsArchive@OSU

Human platelet adhesion to heparinized silica surfaces

Creator:: Bolsinger, Travis Samuel Sebastian
Abstract:: Heparin was modified and immobilized to surface-activated silica surfaces using two different reaction schemes. End-aminated heparin was reacted with 2-iminothiolane to produce free thiol groups at the terminal ends of the heparin chains. The end-thiolated heparin was immobilized by reaction with a pyridyl disulfide activated poly[ethylene oxide]-poly[propylene oxide]-poly[ethylene oxide] triblock...
Resource Type:: Masters Thesis
Full Text:: through the use of PEG linkers heparin can be successfully immobilized on the surface and show AT

Flow processes in the dry regime : the effect on capillary barrier performance

Creator:: Jansik, Danielle P.
Abstract:: Engineered capillary barriers typically consist of two layers of granular materials designed so that the contrast in sediment hydrologic properties and sloping interface retains infiltrating water in the upper layer. We report here on the results of two bench-top capillary barrier experiments, and associated modeling. These experiments were conducted to...
Resource Type:: Masters Thesis
Full Text:: experimental results show that capillary barriers designed based on standard hydrologic property measurements

Effect of cosputtered catalyst on growth and alignment of carbon nanotubes by plasma enhanced chemical vapor deposition

Creator:: Gunderson, Eric P.
Abstract:: The effect of cosputtered catalyst on growth and alignment of carbon nanotubes (CNTs) grown by plasma enhanced chemical vapor deposition (PECVD) was investigated. Aligned CNTs were observed using a cosputtered catalytic metal deposited directly on boro-aluminosilicate glass. Catalytic metal alloys were sputtered directly onto the substrate using magnetron sputtering. Deposition...
Resource Type:: Masters Thesis
Full Text:: depending on their structure. Semiconducting SWCNTs (s-SWCNTs) show great promise due to their high

Catalytic chemical vapor deposition synthesis of carbon nanotubes from methane on SiO supported Fe and Fe−Ni catalysts

Creator:: Nakagawa, Ayako
Abstract:: Influences of operating conditions on the production of carbon nanotubes (CNTs) were studied using Fe and Fe-Ni bimetallic catalysts supported on silicon monoxide (SiO). The catalysts were prepared in three steps: (1) impregnation of SiO powders with ferric nitride or combinations of ferric and nickel nitrides, (2) oxidation of nitrides...
Resource Type:: Masters Thesis
Full Text:: , functionalized MWNTs show highly hydrophobic and tend to have relatively strong hydrogen bonds with water

Selective self-assembly of biogenic silica assisted by layer-by-layer deposition and inkjet printing

Creator:: Wang, Wei
Abstract:: Nature is an inspirational source of silica structures that possess unique optical properties. A few classes of organisms fabricate metal oxides with nanoscale features by a bottom-up self assembly process. In particular, diatoms are a prolific class of single-celled algae that possess silica shells or “frustules” with intricate submicron scale...
Resource Type:: Masters Thesis
Full Text:: labmates Yu-Wei Su, Shuhong Liu, Hyung Dae Jin, and Seungyeol Han for their academic assistance and all

Biological insertion of nanostructured germanium and titanium oxides into diatom biosilica

Creator:: Jeffryes, Clayton S.
Abstract:: There is significant interest in titanium oxide and germanium-silicon oxide nanocomposites for optoelectronic, photocatalytic, and solar cell applications. The ability of the marine diatom Pinnularia sp. to uptake soluble metal oxides from cell culture medium, and incorporate them into the micro- and nano-structure of their amorphous silica cell walls, called...
Resource Type:: Dissertation

Flow characterization of multiple-tube reactors for synthesis of nano-sized silicon nitride powder via silicon monoxide ammonolysis

Creator:: Vas-Umnuay, Paravee
Abstract:: Concentrically arranged multiple-tube reactors with different dimensions were built for synthesizing nano-sized silicon nitride powder via the ammonolysis of SiO vapor. The reaction was operated at temperatures ranging from 1350 to 1400°C and pressure slightly above atmospheric pressure. Silicon monoxide (SiO) vapor was generated by charging argon gas through a...
Resource Type:: Masters Thesis
Full Text:: reaction occurs in a restricted region with rapid heating and cooling rates [Wang and Liu, 1994; Suzuki

Photoluminescence properties investigation of germanium inserted biosilica generated by bioreactor culture of marine diatom Nitzschia frustulum

Creator:: Qin, Tian
Abstract:: The purpose of this research was to investigate the optoelectronic properties of the Ge doped biosilica, mainly focused on the photoluminescence (PL) properties of diatom frustules of N. frustulum that contain metabolically inserted germanium oxide produced by a two-stage photobioreactor cultivation process. In order to explain the observed PL intensity...
Resource Type:: Masters Thesis
Full Text:: radius of the excitons in Ge is larger than that in Si. This implies that the Ge crystals would show

Functional polymers and proteins at interfaces

Creator:: Schilke, Karl F.
Abstract:: Functional polymers and proteins at interfaces and surfaces are of fundamental importance for biomaterials, biocatalysis and microreactor applications. Candida antarctica lipase B immobilized on poly-DL-tryptophan tethers showed 30x higher specific activity in aqueous and non-aqueous media than the same enzyme adsorbed or covalently bound directly to the surface. An excess...
Resource Type:: Dissertation

A novel lattice Boltzmann method for treatment of multicomponent convection, diffusion, and reaction phenomena in multiphase systems

Creator:: Parker, James Muirhead
Abstract:: In this work, a multicomponent lattice Boltzmann model is developed for the simulation of multiphase mixing, reactions, and separations processes. This model is unique in that diffusive mass transfer of a component in the model is driven by gradients of chemical potential. This fundamentally correct description of diffusion accurately captures...
Resource Type:: Dissertation

ScholarsArchive@OSU

Human platelet adhesion to heparinized silica surfaces

Flow processes in the dry regime : the effect on capillary barrier performance

Effect of cosputtered catalyst on growth and alignment of carbon nanotubes by plasma enhanced chemical vapor deposition

Catalytic chemical vapor deposition synthesis of carbon nanotubes from methane on SiO supported Fe and Fe−Ni catalysts

Selective self-assembly of biogenic silica assisted by layer-by-layer deposition and inkjet printing

Biological insertion of nanostructured germanium and titanium oxides into diatom biosilica

Flow characterization of multiple-tube reactors for synthesis of nano-sized silicon nitride powder via silicon monoxide ammonolysis

Photoluminescence properties investigation of germanium inserted biosilica generated by bioreactor culture of marine diatom Nitzschia frustulum

Functional polymers and proteins at interfaces

A novel lattice Boltzmann method for treatment of multicomponent convection, diffusion, and reaction phenomena in multiphase systems

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