Scholarly Works, Department of Biological Systems Engineering
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Research articles, presentations, and other scholarship
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Raman chemometric urinalysis (Rametrix) as a screen for bladder cancer
(2020-08-21)Bladder cancer (BCA) is relatively common and potentially recurrent/progressive disease. It is also costly to detect, treat, and control. Definitive diagnosis is made by examination of urine sediment, imaging, direct ... -
A synthetic biosensor to detect peroxisomal acetyl-CoA concentration for compartmentalized metabolic engineering
(2020-09-08)Background. Sub-cellular compartmentalization is used by cells to create favorable microenvironments for various metabolic reactions. These compartments concentrate enzymes, separate competing metabolic reactions, and ... -
Measuring High Levels of Total Suspended Solids and Turbidity Using Small Unoccupied Aerial Systems (sUAS) Multispectral Imagery
(MDPI, 2020-09-08)Due to land development, high concentrations of suspended sediment are produced from erosion after rain events. Sediment basins are commonly used for the settlement of suspended sediments before discharge. Stormwater ... -
Predicting Field Efficiency of Round-Baling Operations in High-Yielding Biomass Crops
(MDPI, 2020-07-22)Model simulations for bioenergy harvest planning need to utilize equipment-capacity relationships for equipment operating under the high-yield conditions typical of a biomass crop. These performance assumptions have a ... -
Spatio-temporal analysis of rainfall extremes in the flood-prone Nagavali and Vamsadhara Basins in eastern India
(Elsevier, 2020-05-29)Understanding the spatio-temporal distribution of rainfall characteristics has a major role in assessing the availability of water resources over a catchment. Therefore, it is necessary to understand the changes in rainfall ... -
River network saturation concept: factors influencing the balance of biogeochemical supply and demand of river networks
(2018-12)River networks modify material transfer from land to ocean. Understanding the factors regulating this function for different gaseous, dissolved, and particulate constituents is critical to quantify the local and global ... -
Estimating dominant runoff modes across the conterminous United States
(2018-12-30)Effective natural resource planning depends on understanding the prevalence of runoff generating processes. Within a specific area of interest, this demands reproducible, straightforward information that can complement ... -
Multi-Bale Handling Unit for Efficient Logistics
(MDPI, 2020-06-16)This paper presents a design for a feedstock logistics system to supply a bioenergy plant located in the Southeast USA, specifically Piedmont, a physiographic region covering part of five states (VA, NC, SC, GA, and AL). ... -
Seasonal variability of organic matter composition in an Alaskan glacier outflow: insights into glacier carbon sources
(IOP Publishing, 2014-05-08)Glacier ecosystems are a significant source of bioavailable, yet ancient dissolved organic carbon (DOC). Characterizing DOC in Mendenhall Glacier outflow (southeast Alaska) we document a seasonal persistence to the ... -
How Hydrologic Connectivity Regulates Water Quality in River Corridors
(2019-04)Downstream flow in rivers is repeatedly delayed by hydrologic exchange with off-channel storage zones where biogeochemical processing occurs. We present a dimensionless metric that quantifies river connectivity as the ... -
Small Ponds in Headwater Catchments Are a Dominant Influence on Regional Nutrient and Sediment Budgets
(2019-08-28)Small ponds-farm ponds, detention ponds, or impoundments below 0.01 km(2)-serve important human needs throughout most large river basins. Yet the role of small ponds in regional nutrient and sediment budgets is essentially ... -
The Rametrix (TM) PRO Toolbox v1.0 for MATLAB (R)
(2020-01-06)Background. Existing tools for chemometric analysis of vibrational spectroscopy data have enabled characterization of materials and biologicals by their broad molecular composition. The Rametrix (TM) LITE Toolbox v1.0 for ... -
Designs of Antigen Structure and Composition for Improved Protein-Based Vaccine Efficacy
(2020-02-24)Today, vaccinologists have come to understand that the hallmark of any protective immune response is the antigen. However, it is not the whole antigen that dictates the immune response, but rather the various parts comprising ... -
Characterizing glucose, illumination, and nitrogen-deprivation phenotypes of Synechocystis PCC6803 with Raman spectroscopy
(2020-03-30)Background. Synechocystis sp. PCC6803 is a model cyanobacterium that has been studied widely and is considered for metabolic engineering applications. Here, Raman spectroscopy and Raman chemometrics (Rametrix (TM)) were ... -
Characterizing metabolic stress-induced phenotypes of Synechocystis PCC6803 with Raman spectroscopy
(2020-03-30)Background. During their long evolution, Synechocystis sp. PCC6803 developed a remarkable capacity to acclimate to diverse environmental conditions. In this study, Raman spectroscopy and Raman chemometrics tools (Rametrix ... -
Low threshold for nitrogen concentration saturation in headwaters increases regional and coastal delivery
(2020-04)River corridors store, convey, and process nutrients from terrestrial and upstream sources, regulating delivery from headwaters to estuaries. A consequence of chronic excess nitrogen loading, as supported by theory and ... -
Improved Simulation of Edaphic and Manure Phosphorus Loss in SWAT
(2016-07)Watershed models such as the Soil Water Assessment Tool (SWAT) and the Agricultural Policy Environmental EXtender (APEX) are widely used to assess the fate and transport of agricultural nutrient management practices on ... -
Improving the spatial representation of soil properties and hydrology using topographically derived initialization processes in the SWAT model
(2016-11-29)Topography exerts critical controls on many hydrologic, geomorphologic and biophysical processes. However, many watershed modelling systems use topographic data only to define basin boundaries and stream channels, neglecting ... -
Environmental flows in the context of unconventional natural gas development in the Marcellus Shale
(2017-01)Quantitative flow-ecology relationships are needed to evaluate how water withdrawals for unconventional natural gas development may impact aquatic ecosystems. Addressing this need, we studied current patterns of hydrologic ... -
Assessing Strontium and Vulnerability to Strontium in Private Drinking Water Systems in Virginia
(MDPI, 2020-04-08)A total of 1.7 million Virginians rely on private drinking water (PDW) systems and 1.3 million of those people do not know their water quality. Because most Virginians who use PDW do not know the quality of that water and ...
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