Browsing by Subject "Water"
Now showing items 1-20 of 26
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A broad survey of hydraulic and mechanical safety in the xylem of conifers.
(Journal of experimental botany, 2014-08)Drought-induced forest dieback has been widely reported over the last decades, and the evidence for a direct causal link between survival and hydraulic failure (xylem cavitation) is now well known. Because vulnerability ... -
A Sustainability Plan for American Tobacco Campus
(2011-04-29)American Tobacco Campus (ATC) Management has committed to understanding the environmental impact of their campus and making strategic improvements, while reducing operational costs. This Masters Project focused on determining ... -
Analyzing the Connections Among Water Access, Sanitation, Malaria and Diarrhea Outcomes in Rural Central Uganda
(2016-04-22)Access to safe water and sanitation around the world has increased significantly in the past few decades. The United Nations claims that 91% of the world’s population has access to safe water, exceeding the Millennium Development ... -
Assessing Community Based Water Organization Performance in Central America
(2017-06-26)What are the effects of household, community, technical, and environmental variables on the performance and resilience of CWOs in dry regions? Since 2014, drought has severely affected Central American economic and health ... -
Comparisons of Carbon and Water Fluxes of Pine Forests in Boreal and Temperate Climatic Zones
(2015)Quantifying carbon fluxes and pools of forest ecosystems is an active research area in global climate study, particularly in the currently and projected increasing atmospheric carbon dioxide concentration environment. Forest ... -
Control of the orientational order and nonlinear optical response of the "push-pull" chromophore RuPZn via specific incorporation into densely packed monolayer ensembles of an amphiphilic four-helix bundle peptide: characterization of the peptide-chromophore complexes.
(J Am Chem Soc, 2010-08-18)"Push-pull" chromophores based on extended pi-electron systems have been designed to exhibit exceptionally large molecular hyperpolarizabilities. We have engineered an amphiphilic four-helix bundle peptide to vectorially ... -
Foreign Aid Allocation and Impact: A Sub-National Analysis of Malawi
(2013-04-15)This project estimates the first sub-national model of foreign aid allocation and impact. Newly geocoded aid project data from Malawi is used in combination with multiple rounds of living standards data to predict the allocation ... -
Four-decade responses of soil trace elements to an aggrading old-field forest: B, Mn, Zn, Cu, and Fe.
(Ecology, 2008-10)In the ancient and acidic Ultisol soils of the Southern Piedmont, USA, we studied changes in trace element biogeochemistry over four decades, a period during which formerly cultivated cotton fields were planted with pine ... -
Hydraulic redistribution of soil water by roots affects whole-stand evapotranspiration and net ecosystem carbon exchange.
(New Phytol, 2010-07)*Hydraulic redistribution (HR) of water via roots from moist to drier portions of the soil occurs in many ecosystems, potentially influencing both water use and carbon assimilation. *By measuring soil water content, sap ... -
Integrated Water Finance Solutions to Drought in the Yakima Basin: Recommendations for the Yakima Drought Relief Pumping Plant (YDRPP)
(2017-04-28)Located within the United States Department of the Interior (DOI), the Natural Resource Investment Center (NRIC) was created under the Obama Administration to facilitate resource conservation through innovative partnerships ... -
Is there foul play in the leaf pocket? The metagenome of floating fern Azolla reveals endophytes that do not fix N2 but may denitrify.
(The New phytologist, 2018-01)Dinitrogen fixation by Nostoc azollae residing in specialized leaf pockets supports prolific growth of the floating fern Azolla filiculoides. To evaluate contributions by further microorganisms, the A. filiculoides microbiome ... -
Magnetic resonance water proton relaxation in protein solutions and tissue: T(1rho) dispersion characterization.
(PLoS One, 2010-01-05)BACKGROUND: Image contrast in clinical MRI is often determined by differences in tissue water proton relaxation behavior. However, many aspects of water proton relaxation in complex biological media, such as protein solutions ... -
Measuring morphological features using light-scattering spectroscopy and Fourier-domain low-coherence interferometry.
(Opt Lett, 2010-02-01)We present measurements of morphological features in a thick turbid sample using light-scattering spectroscopy (LSS) and Fourier-domain low-coherence interferometry (fLCI) by processing with the dual-window (DW) method. ... -
Physical and economic potential of geological CO2 storage in saline aquifers.
(Environ Sci Technol, 2009-03-15)Carbon sequestration in sandstone saline reservoirs holds great potential for mitigating climate change, but its storage potential and cost per ton of avoided CO2 emissions are uncertain. We develop a general model to determine ... -
Physical and economic potential of geological CO2 storage in saline aquifers.
(Environ Sci Technol, 2009-03-15)Carbon sequestration in sandstone saline reservoirs holds great potential for mitigating climate change, but its storage potential and cost per ton of avoided CO2 emissions are uncertain. We develop a general model to determine ... -
Predicting Forest Responses to Changing Environmental Conditions
(2016)Forests change with changes in their environment based on the physiological responses of individual trees. These short-term reactions have cumulative impacts on long-term demographic performance. For a tree in a forest community, ... -
Supercritical water oxidation of a model fecal sludge without the use of a co-fuel.
(Chemosphere, 2015-12)A continuous supercritical water oxidation reactor was designed and constructed to investigate the conversion of a feces simulant without the use of a co-fuel. The maximum reactor temperature and waste conversion was determined ... -
The effect of hydrogen bonding on the diffusion of water in n-alkanes and n-alcohols measured with a novel single microdroplet method.
(J Chem Phys, 2010-01-28)While the Stokes-Einstein (SE) equation predicts that the diffusion coefficient of a solute will be inversely proportional to the viscosity of the solvent, this relation is commonly known to fail for solutes, which are the ... -
The effect of nitric oxide surface flux on the foreign body response to subcutaneous implants.
(Biomaterials, 2012-09)Although the release of nitric oxide (NO) from biomaterials has been shown to reduce the foreign body response (FBR), the optimal NO release kinetics and doses remain unknown. Herein, polyurethane-coated wire substrates ... -
The Emerging Importance of Stormwater Management with a Focus on the City of Philadelphia
(2012-04-18)Over 80 percent of the population of the United States lives in cities. The large population coupled with a dense built environment means that cities are generally at a higher risk for the negative consequences of polluted ...
