Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Life Sciences (3)
- Biology (2)
- Plant Sciences (2)
- Atomic, Molecular and Optical Physics (1)
- Biomaterials (1)
-
- Biomedical Engineering and Bioengineering (1)
- Chemistry (1)
- Computer Sciences (1)
- Databases and Information Systems (1)
- Earth Sciences (1)
- Education (1)
- Engineering (1)
- Environmental Health and Protection (1)
- Environmental Indicators and Impact Assessment (1)
- Environmental Monitoring (1)
- Environmental Sciences (1)
- Forest Biology (1)
- Forest Sciences (1)
- Geography (1)
- Geology (1)
- Materials Chemistry (1)
- Optics (1)
- Physics (1)
- Plant Biology (1)
- Social and Behavioral Sciences (1)
- Teacher Education and Professional Development (1)
- Institution
- Keyword
-
- Community-weighted mean (1)
- Ecosystem (1)
- Functional dispersion (1)
- Functional richness (1)
- Humidity (1)
-
- Mechanical vibrations (1)
- Nanofibers (1)
- Old-growth (1)
- Path analysis (1)
- Perovskites (1)
- Piezoelectric (1)
- Plasmonic nanoparticles (1)
- Quantum efficiency (1)
- Science education (1)
- Scientific inquiry (1)
- Seed dormancy profile (1)
- Sensor (1)
- Short circuit current (1)
- Solar cell (1)
- Spider silk (1)
- Stress-dominance hypothesis (1)
- Teacher learning model (1)
- Teacher-researcher partnership program (1)
- Tropical rainforest (1)
- Xishuangbanna (1)
- Yunnan Province (1)
Articles 1 - 5 of 5
Full-Text Articles in Physical Sciences and Mathematics
Efficiency Enhancement Of Perovskite Solar Cells With Plasmonic Nanoparticles: A Simulation Study, Ali Hajjiah, Ishac Kandas, Nader Shehata
Efficiency Enhancement Of Perovskite Solar Cells With Plasmonic Nanoparticles: A Simulation Study, Ali Hajjiah, Ishac Kandas, Nader Shehata
Biology Faculty Publications
Recently, hybrid organic-inorganic perovskites have been extensively studied due to their promising optical properties with relatively low-cost and simple processing. However, the perovskite solar cells have some low optical absorption in the visible spectrum, especially around the red region. In this paper, an improvement of perovskite solar cell efficiency is studied via simulations through adding plasmonic nanoparticles (NPs) at the rear side of the solar cell. The plasmonic resonance wavelength is selected to be very close to the spectrum range of lower absorption of the perovskite: around 600 nm. Both gold and silver nanoparticles (Au and Ag NPs) are selected …
Piezoresponse, Mechanical, And Electrical Characteristics Of Synthetic Spider Silk Nanofibers, Nader Shehata, Ishac Kandas, Ibrahim Hassounah, Patrik Sobolčiak, Igor Krupa, Miroslav Mrlik, Anton Popelka, Jesse Steadman, Randolph V. Lewis
Piezoresponse, Mechanical, And Electrical Characteristics Of Synthetic Spider Silk Nanofibers, Nader Shehata, Ishac Kandas, Ibrahim Hassounah, Patrik Sobolčiak, Igor Krupa, Miroslav Mrlik, Anton Popelka, Jesse Steadman, Randolph V. Lewis
Biology Faculty Publications
This work presents electrospun nanofibers from synthetic spider silk protein, and their application as both a mechanical vibration and humidity sensor. Spider silk solution was synthesized from minor ampullate silk protein (MaSp) and then electrospun into nanofibers with a mean diameter of less than 100 nm. Then, mechanical vibrations were detected through piezoelectric characteristics analysis using a piezo force microscope and a dynamic mechanical analyzer with a voltage probe. The piezoelectric coefficient (d33) was determined to be 3.62 pC/N. During humidity sensing, both mechanical and electric resistance properties of spider silk nanofibers were evaluated at varying high-level …
Seed Dormancy-Life Form Profile For 358 Species From The Xishuangbanna Seasonal Tropical Rainforest, Yunnan Province, China Compared To World Database, Qinying Lan, Shouhua Yin, Huiyin He, Yunhong Tan, Qiang Liu, Yongmei Xia, Bin Wen, Carol C. Baskin, Jerry M. Baskin
Seed Dormancy-Life Form Profile For 358 Species From The Xishuangbanna Seasonal Tropical Rainforest, Yunnan Province, China Compared To World Database, Qinying Lan, Shouhua Yin, Huiyin He, Yunhong Tan, Qiang Liu, Yongmei Xia, Bin Wen, Carol C. Baskin, Jerry M. Baskin
Biology Faculty Publications
Seed dormancy profiles are available for the major vegetation regions/types on earth. These were constructed using a composite of data from locations within each region. Furthermore, the proportion of species with nondormant (ND) seeds and the five classes of dormancy is available for each life form in each region. Using these data, we asked: will the results be the same if many species from a specific area as opposed to data compiled from many locations are considered? Germination was tested for fresh seeds of 358 species in 95 families from the Xishuangbanna seasonal tropical rainforest (XSTRF): 177 trees, 66 shrubs, …
Genuine Faculty-Mentored Research Experiences For In-Service Science Teachers: Increases In Science Knowledge, Perception, And Confidence Levels, Christine E. Cutucache, Heather D. Leas, Neal F. Grandgenett, Kari L. Nelson, Steven N. Rodie, Robert Duncan Shuster, Chris Schaben, William E. Tapprich
Genuine Faculty-Mentored Research Experiences For In-Service Science Teachers: Increases In Science Knowledge, Perception, And Confidence Levels, Christine E. Cutucache, Heather D. Leas, Neal F. Grandgenett, Kari L. Nelson, Steven N. Rodie, Robert Duncan Shuster, Chris Schaben, William E. Tapprich
Biology Faculty Publications
The overall purpose of this multifocused study was to explore how participation in genuine mentored scientific research experiences impacts in-service science teachers and the knowledge and skills needed for their own science teaching. The research experiences resulted from a partnership between the University of Nebraska at Omaha and the Omaha Public School District. This Teacher- Researcher Partnership Program facilitated opportunities in inquiry, science content, interaction with laboratory instrumentation and technologies, critical discussion of literature, and dissemination of findings for participating in-service science teacher professional development utilizing an inquiry-based theoretical framework wherein we examined science teacher preparation via inquiry-based methods in …
The Role Of Environmental Filtering In Structuring Appalachian Tree Communities: Topographic Influences On Functional Diversity Are Mediated Through Soil Characteristics, Julia I. Chapman, Ryan W. Mcewan
The Role Of Environmental Filtering In Structuring Appalachian Tree Communities: Topographic Influences On Functional Diversity Are Mediated Through Soil Characteristics, Julia I. Chapman, Ryan W. Mcewan
Biology Faculty Publications
Identifying the drivers of community assembly has long been a central goal in ecology, and the development of functional diversity indices has provided a new way of detecting the influence of environmental gradients on biotic communities. For an old-growth Appalachian forest, we used path analysis to understand how patterns of tree functional diversity relate to topography and soil gradients and to determine whether topographic effects are mediated through soil chemistry. All of our path models supported the idea of environmental filtering: stressful areas (high elevation, low soil moisture, low soil nutrients) were occupied by communities of low functional diversity, which …