Index Catalog // ScholarsArchive@OSU

Understanding the Use of Tablet Technology as a Mechanism for Improving Teaching and Learning in the Corvallis School District

Creator:: Hunter, Nancee and Storksdieck, Martin
Abstract:: The Tablets in Classrooms (TIC) program was initiated by the Corvallis School District (CSD) during the 2012-13 school year. TIC provides teachers and students in elementary and middle grades with Apple iPads as new pedagogical tools for teaching and learning. The school district contracted with Oregon State University’s Center for...
Resource Type:: Technical Report
Full Text:: REFERENCES 34 APPENDIX A: METHODOLOGY 35 Technology in Classrooms Research Report 1/2017 2

Experimental investigation of supercritical carbon dioxide in horizontal microchannels with non-uniform heat flux boundary conditions

Creator:: Jajja, Saad A., Zada, Kyle R., and Fronk, Brian M.
Abstract:: Supercritical carbon dioxide (sCO2) experiences a drastic change in its thermophysical properties near the thermodynamic critical point. A non-linear thermophysical property variation can influence the heat transfer behavior of sCO2 which is not predicted well by conventional single phase heat transfer theory. This can become a major hindrance in the...
Resource Type:: Article
Full Text:: large circular tube data can be scaled down to the microscale, non-circular channels subject to non

Evaluating Agronomic Responses of Camelina to Seeding Date under Rain-Fed Conditions

Creator:: Sintim, Henry Y., Zheljazkov, Valtcho D., Obour, Augustine K., Garcia y Garcia, Axel, and Foulke, Thomas K.
Abstract:: The potential to use camelina (Camelina sativa L.) as a bioenergy crop has increased the need to develop management practices that would improve sustainable production. This study evaluated the effects by cultivars (Blaine Creek, Pronghorn, and Shoshone) and three spring seeding dates on the performance of camelina grown under rain-fed...
Resource Type:: Article
Full Text:: emergence, fl ower- ing, and maturity were 34, 417, and 998, respectively. Among the three cultivars

Two-phase flow regimes of condensing R-134a at low mass flux in rectangular microchannels

Creator:: Vanderputten, Michael A., Jacob, Tabeel A., Sattar, Maria, Ali, Nouman, and Fronk, Brian M.
Abstract:: Qualitative two-phase flow regime data are obtained from high-speed visualization of condensing flows of R-134a at mass fluxes from 75 to 150 kg m−2 s−1 and quality from 0.1 to 0.8 in square microchannels (DH = 0.84 mm) cooled from a single side. Superheated R-134a is distributed into multiple parallel microchannels and then partially condensed, using...
Resource Type:: Article
Full Text:: annular/wavy type flow were observed, with no distinct intermittent flow. Data are compared with flow

Using Euclidean Geometry to Construct Objects in the Elliptic Klein Disk

Creator:: Connolly, Genevieve
Abstract:: Constructions using only a straightedge and compass are basic tools in any geometer's toolbox. We show how to construct an elliptic straightedge and compass in the Klein Disk model of (single) elliptic geometry, using only a Euclidean compass and straightedge.
Resource Type:: Research Paper
Full Text:: with a Euclidean circular arc, and there are no parallel lines in elliptic geometry. A common model

The Viability of Container-Based Sanitation as a Tool for Sanitation Coverage in Urban Haiti

Creator:: VanRiper, Froggi Ramona
Abstract:: Haiti is far from achieving the UN goal of sanitation access for all; 20% Haitians have no sanitation access, and less than 0.1% of urban excreta is safely managed. Container-Based Sanitation (CBS) may be a key tool for achieving equitable sanitation coverage in Haiti’s cities. CBS is a sanitation strategy...
Resource Type:: Dissertation
Full Text:: Jenna Tilt Haiti is far from achieving the UN goal of sanitation access for all; 20% Haitians have no

Universal interaction-driven gap in metallic carbon nanotubes

Creator:: Senger, Mitchell J., McCulley, Daniel R., Lotfizadeh, Neda, Deshpande, Vikram V., and Minot, Ethan D.
Abstract:: Suspended metallic carbon nanotubes (m-CNTs) exhibit a remarkably large transport gap that can exceed 100 meV. Both experiment and theory suggest that strong electron-electron interactions play a crucial role in generating this electronic structure. To further understand this strongly-interacting system, we have performed electronic measurements of suspended m-CNTs with known...
Resource Type:: Preprint and Article
Full Text:: find no correlation between the gap and the CNT chiral angle. Our results add important new

Impact of Time and Temperature on Ex Vivo and Postmortem Diagnostic Assays

Creator:: Wachtel, Kaitlyn E.
Abstract:: Postmortem diagnostics play an important role in the ability to understand the cause of death of an animal. However, removal from oxygen supply, either by surgical excision or at death, leads to cell and tissue decomposition. Knowledge about factors impacting reliability of test results is extremely important for accurate diagnostics....
Resource Type:: Honors College Thesis
Full Text:: 21 ˚C sample showed no staining. The PAX5 and 4 CD79 𝛼 stains showed some non-specific

Geometry and orientation effects in non-uniformly heated microchannel heat exchangers using supercritical carbon dioxide

Creator:: Jajja, Saad A., Sequeira, Jessa M., and Fronk, Brian M.
Abstract:: There is growing interest to use supercritical carbon dioxide (sCO2) as a working fluid in thermal management applications. This study investigates the thermal-hydraulic performance of microchannel heat sinks as a function of flow channel geometry and orientation at operating conditions representative of electronics cooling applications. Three different experimental test sections,...
Resource Type:: Article
Full Text:: heat sinks have been used to manage applied heat fluxes ranging from 3.8 W cm-2 to 790 W cm-2 [34, 35

Simulation of membrane heat pump system performance for space cooling

Creator:: Bukshaisha, Ahmad A. and Fronk, Brian M.
Abstract:: Membrane based heat pumps systems have attracted the attention of many research groups as a potentially more environmentally friendly alternative to vapor compression systems for space cooling. Several prototype systems have been developed, with reported claims of Energy Efficiency Ratios (EER) approaching 26. At present, no detailed analysis is publicly...
Resource Type:: Article
Full Text:: reported claims of Energy Efficiency Ratios (EER) approaching 26. At present, no detailed analysis is

ScholarsArchive@OSU

Understanding the Use of Tablet Technology as a Mechanism for Improving Teaching and Learning in the Corvallis School District

Experimental investigation of supercritical carbon dioxide in horizontal microchannels with non-uniform heat flux boundary conditions

Evaluating Agronomic Responses of Camelina to Seeding Date under Rain-Fed Conditions

Two-phase flow regimes of condensing R-134a at low mass flux in rectangular microchannels

Using Euclidean Geometry to Construct Objects in the Elliptic Klein Disk

The Viability of Container-Based Sanitation as a Tool for Sanitation Coverage in Urban Haiti

Universal interaction-driven gap in metallic carbon nanotubes

Impact of Time and Temperature on Ex Vivo and Postmortem Diagnostic Assays

Geometry and orientation effects in non-uniformly heated microchannel heat exchangers using supercritical carbon dioxide

Simulation of membrane heat pump system performance for space cooling

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