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Articles 391 - 420 of 780
Full-Text Articles in Physical Sciences and Mathematics
Nanoscale Condensation Of Water On Self-Assembled Monolayers, Michael James, Tamim A. Darwish, Simone Ciampi, Sven O. Sylvester, Zhaoming Zhang, Albert Ng, J Justin Gooding, Tracey L. Hanley
Nanoscale Condensation Of Water On Self-Assembled Monolayers, Michael James, Tamim A. Darwish, Simone Ciampi, Sven O. Sylvester, Zhaoming Zhang, Albert Ng, J Justin Gooding, Tracey L. Hanley
Australian Institute for Innovative Materials - Papers
We demonstrate that water is almost universally present on apparently dry self-assembled monolayers, even on those considered almost hydrophobic by conventional methods such as water contact goniometry. The structure and kinetics of nanoscale water adsorption onto these surfaces were investigated using X-ray and neutron reflectometry, as well as atomic force microscopy. Condensation of water on hydrophilic surfaces under ambient conditions formed a dense sub-nanometre surface layer; the thickness of which increased with exponentially limiting kinetics. Tapping mode AFM measurements show the presence of nanosized droplets that covered a small percentage (∼2%) of the total surface area, and which became fewer …
Application Of The Water Poverty Index In Border Colonias Of West Texas, Marcelo Korc
Application Of The Water Poverty Index In Border Colonias Of West Texas, Marcelo Korc
Open Access Theses & Dissertations
This study applied the Water Poverty Index (WPI) in border colonias and other rural areas of west Texas. The colonias are mostly unincorporated communities located primarily in New Mexico and Texas along the border with Mexico and are characterized by high poverty rates and substandard living conditions. In Texas, access to drinking water and sanitation services has been identified as one of the most significant determinants of health in over 350 colonias with about 50 thousand residents.
The WPI is a multidimensional measure that links household welfare with water availability. WPI components were identified and prioritized by a wide range …
Phosphoric Acid Catalyzed Aza-Michael Reaction In Water: An Ecofriendly Procedure, Debasish Bandyopadhyay, Stephanie Maldonado, Bimal K. Banik
Phosphoric Acid Catalyzed Aza-Michael Reaction In Water: An Ecofriendly Procedure, Debasish Bandyopadhyay, Stephanie Maldonado, Bimal K. Banik
Chemistry Faculty Publications and Presentations
Phosphoric acid catalyzed aza-Michael reaction in water has been carried out in an efficient manner at room temperature. The reaction is general for primary, secondary (cyclic, heterocyclic and acyclic), benzylic as well as aromatic amines. No bis-addition was observed for primary amines.
Annual Outflow Of Water From Nebraska, 1950 - 2010, S. Olafsen-Lackey
Annual Outflow Of Water From Nebraska, 1950 - 2010, S. Olafsen-Lackey
Conservation and Survey Division
No abstract provided.
Annual Outflow And Annual Inflow Of Water From/To Nebraska, 1950- 2010, Susan Olafsen-Lackey
Annual Outflow And Annual Inflow Of Water From/To Nebraska, 1950- 2010, Susan Olafsen-Lackey
Conservation and Survey Division
No abstract provided.
Exploring Sustainable Environmental Management Practices For Golf Courses In Semi-Arid Environments, Angelica V. Gurule
Exploring Sustainable Environmental Management Practices For Golf Courses In Semi-Arid Environments, Angelica V. Gurule
Masters Theses, 2010-2019
For the past several years NM government officials have been working to increase economic growth via tourism in NM. As a result several dozen golf courses have popped up around the state. Golf courses are conceived to be problematic as they consume large quantities of water and typically use lots of harmful pesticides to manage turfgrass. Water scarcity has already shown its face in NM: there are drought plans in place and growing evidence that illustrates the decrease in precipitation and an increase in temperatures, which will further reduce water resources. The scope of this paper is to analyze the …
The Correlation Of The Concentration Of Selected Metals Determined In Water And Fish Samples From A Public Pond., Paula Kay Edwards
The Correlation Of The Concentration Of Selected Metals Determined In Water And Fish Samples From A Public Pond., Paula Kay Edwards
Electronic Theses and Dissertations
The concentrations of heavy metals (Cd, Cu, Fe, Ni, Pb, Zn) were measured in water, and fish samples caught from the pond at Fishery Park in Unicoi County, TN. The water samples were collected once a week for 8 weeks. The amounts of metals in the muscle tissues, gill, and liver of the two fish species were measured. This was to determine if any correlation exists between the metal contents in water and those in the fish samples. The concentration ranges for the heavy metals found in the water samples are as follows: Zn 0.04-0.13; Cu, 0.00-0.00; Pb, 0.00-0.59; Cd, …
Slides: Development Of Shale: Water Resource Concerns And Policy Considerations, Katy Dunlap
Slides: Development Of Shale: Water Resource Concerns And Policy Considerations, Katy Dunlap
Shale Plays in the Intermountain West: Legal and Policy Issues (November 12)
Presenter: Katy Dunlap, Eastern Water Project Director, Trout Unlimited, Inc., Burdett, NY
24 slides
Slides: Water And Development Of Unconventional Oil And Gas Resources, Judy Jordan
Slides: Water And Development Of Unconventional Oil And Gas Resources, Judy Jordan
Shale Plays in the Intermountain West: Legal and Policy Issues (November 12)
Presenter: Judy Jordan, Oil & Gas Liaison, Garfield County, Rifle, CO
21 slides
Slides: Assessing Opportunities And Barriers To Reducing The Environmental Footprint Of Oil And Gas Development In Utah, Douglas Jackson-Smith, Lorien Belton, Brian Gentry, Gene Theodori
Slides: Assessing Opportunities And Barriers To Reducing The Environmental Footprint Of Oil And Gas Development In Utah, Douglas Jackson-Smith, Lorien Belton, Brian Gentry, Gene Theodori
Opportunities and Obstacles to Reducing the Environmental Footprint of Natural Gas Development in Uintah Basin (October 14)
Presenter: Dr. Douglas Jackson-Smith, Utah State University--Logan Campus
37 slides
Comparison Of Ice Core Dissolved Organic Matter From A Greenland Ice Core By Nanospray Fourier Transform Ion Cyclotron Resonance Mass Spectrometry, Joshua Jeremiah Shiloh Marsh
Comparison Of Ice Core Dissolved Organic Matter From A Greenland Ice Core By Nanospray Fourier Transform Ion Cyclotron Resonance Mass Spectrometry, Joshua Jeremiah Shiloh Marsh
Chemistry & Biochemistry Theses & Dissertations
Recent studies of ice cores have embarked on the task of determining the classes of dissolved organic matter (DOM) present in melt-water from the cores collected in numerous locations in the northern and southern hemispheres. This DOM originally derives from wet precipitation and is thought to reflect atmospheric organic matter derived from anthropogenic and non-anthropogenic sources. Because the amount of DOM is so low, previous studies have necessarily used large sample volumes (greater than 500 mL) to concentrate sufficient ice core DOM necessary for mass spectral analysis. Solid phase extraction (SPE) with C18 resins was followed by evaporative concentration …
Applications Of Molecular Dynamics Techniques And Spectroscopic Theories To Aqueous Interfaces, Anthony Green
Applications Of Molecular Dynamics Techniques And Spectroscopic Theories To Aqueous Interfaces, Anthony Green
USF Tampa Graduate Theses and Dissertations
The primary goal of spectroscopy is to obtain molecularly detailed information about the system under study. Sum frequency generation (SFG) vibrational spectroscopy is a nonlinear optical technique that is highly interface specific, and is therefore a powerful tool for understanding interfacial structure and dynamics. SFG is a second order, electronically nonresonant, polarization experiment and is consequently dipole forbidden in isotropic media such as a bulk liquid. Interfaces, however, serve to break the symmetry and produce a signal. Theoretical approximations to vibrational spectra of O-H stretching at aqueous interfaces are constructed using time correlation function (TCF) and instantaneous normal mode (INM) …
Water And Poverty In Rural China: Developing An Instrument To Assess The Multiple Dimensions Of Water And Poverty, Alasdair Cohen, Caroline A. Sullivan
Water And Poverty In Rural China: Developing An Instrument To Assess The Multiple Dimensions Of Water And Poverty, Alasdair Cohen, Caroline A. Sullivan
Professor Caroline A Sullivan
This paper describes the theoretical foundations and development of a multidimensional, water-focused, thematic indicator of rural poverty: The Water, Economy, Investment and Learning Assessment Indicator (WEILAI). The WEILAI approach was specifically designed for application in rural China, to support poverty alleviation project planning, monitoring and evaluation, as well as targeting and prioritization. WEILAI builds primarily on the basic needs framework of poverty alleviation, and on the methodological structure of the Water Poverty Index, to provide a proxy measure of an area's poverty by assessing eight key poverty sectors, with a strong focus on the components of water-poverty. The WEILAI approach …
Slides: Climate Change And Public Lands: Examples From National Parks, Stephen Saunders
Slides: Climate Change And Public Lands: Examples From National Parks, Stephen Saunders
The Past, Present, and Future of Our Public Lands: Celebrating the 40th Anniversary of the Public Land Law Review Commission’s Report, One Third of the Nation’s Land (Martz Summer Conference, June 2-4)
Presenter: Stephen Saunders, President, The Rocky Mountain Climate Organization (Denver, CO)
40 slides
Slides: Forest Service Planning At A Crossroads; New Approaches To Old Recommendations, Rick Cables
Slides: Forest Service Planning At A Crossroads; New Approaches To Old Recommendations, Rick Cables
The Past, Present, and Future of Our Public Lands: Celebrating the 40th Anniversary of the Public Land Law Review Commission’s Report, One Third of the Nation’s Land (Martz Summer Conference, June 2-4)
Presenter: Rick Cables, Regional Forester, U.S. Forest Service - Rocky Mountain Region (Golden, CO)
23 slides
Sustainable Agriculture: A Time For Education, Kortnie Millhouse
Sustainable Agriculture: A Time For Education, Kortnie Millhouse
Agricultural Education and Communication
This study used a fifteen-question survey to identify the articulation between education of water quality practices and the willingness to implement sustainable water quality techniques on farmland according to twenty-five agricultural operations residing on the Central Coast. Questions one through eight asked respondents to indicate their agreement or disagreement with various water quality assessment tools. Questions nine through twelve asked respondents to personally rate their operation’s level of water quality management on a scale from one to ten. Questions thirteen through fifteen were open-ended questions to generate responses about demographics. Consensus was reached that the higher the level of education …
Treatment Of Displaced Indigenous Populations In Two Large Hydro Projects In Panama, Mary Finley-Brook, Curtis Thomas
Treatment Of Displaced Indigenous Populations In Two Large Hydro Projects In Panama, Mary Finley-Brook, Curtis Thomas
Geography and the Environment Faculty Publications
The World Commission on Dams provided an analytical overview of the cumulative effects of years of dam development. A lack of commitment or capacity to cope with displacement or to consider the civil rights of, or risks to, displaced people led to the impoverishment and suffering of tens of millions and growing opposition to dams by affected communities worldwide. However, after the WCD, little has changed for the better in terms of resettlement policies. In fact, the standards of key agencies, like the Asian Development Bank, have been lowered and diluted compared to prior policies. Dam-induced development and displacement are …
The Role Of Algorithmic Decision Processes In Decision Automation: Three Case Studies, Blake Edward Durtschi
The Role Of Algorithmic Decision Processes In Decision Automation: Three Case Studies, Blake Edward Durtschi
Theses and Dissertations
This thesis develops a new abstraction for solving problems in decision automation. Decision automation is the process of creating algorithms which use data to make decisions without the need for human intervention. In this abstraction, four key ideas/problems are highlighted which must be considered when solving any decision problem. These four problems are the decision problem, the learning problem, the model reduction problem, and the verification problem. One of the benefits of this abstraction is that a wide range of decision problems from many different areas can be broken down into these four “key” sub-problems. By focusing on these key …
Cleaning Of Rivers Through The Application Of Advanced Technologies, Praveen Jha Dr
Cleaning Of Rivers Through The Application Of Advanced Technologies, Praveen Jha Dr
Praveen Jha Dr
Despite immense drain on our scarce resources, rivers remain polluted. Waste disposal into rivers on top of meager to absent infrastructural facilities, including treatment facilities, are the most important drivers of pollution. Unscientific development paradigm devoid of adequate environmental safeguards and failure of forestry sector to cope up with the challenge has led to the deteriorated condition of green cover and water. Several state-of-art geo-spatial programs developed by the author would be applied for generating optimum state-of-art plan. Three state-of-art geo-spatial programs - Multi-Algorithm Automation Program (MAAP), Data Automatic Modification Program (DAMP) and Multi-Stage Simulation Program (MUSSIP) - developed primarily …
Colorado River Water: Mexico's Perspective On The Ongoing Negotiations, Mario López Pérez
Colorado River Water: Mexico's Perspective On The Ongoing Negotiations, Mario López Pérez
US-Mexico Negotiations on Improved Colorado River Management: An Update (February 19)
Presenter: Mario López, Engineering and Technical Standards Manager, National Water Commission of México
53 slides
Slides: The Promise And Peril Of Oil Shale: Federal Law And Policy, David Bernhardt
Slides: The Promise And Peril Of Oil Shale: Federal Law And Policy, David Bernhardt
The Promise and Peril of Oil Shale Development (February 5)
Presenter: David Bernhardt, Brownstein Hyatt Farber Schreck, Denver, CO
13 slides
Ordway Weather And Water Data 2010, Macalester College
Ordway Weather And Water Data 2010, Macalester College
Ordway Weather Data
Contains daily readings for the year indicated. The values include: PAR umol/s/m2, avg wind dir degree, avg windspeed mph, Avg Max Windspeed mph, Avg airtemp C, Avg RH %, Avg BP mmHg, Avg DailyRain in, Avg Rain Duration sec, Avg RainIntensity in/h, Avg Water Temp F, Avg sp cond mS/cm, avg pH, Avg Turb NTU+, Avg ODOSat %, Avg ODO mg/L, Water station PAR umol/s/m2, Avg Water Level m. File format: CSV.
Aqua Science Through The Ages. An Illustrated History Of Water, Fathi Habashi
Aqua Science Through The Ages. An Illustrated History Of Water, Fathi Habashi
Fathi Habashi
Water a component of the Four Elements considered by the ancient philosophers as essential for survival, played, and is still playing an essential role in society. Great civilizations in ancient times developed along great rivers. The ancient peoples knew how to manage water supplies by digging canals, controlling floods, and using water for irrigation. They designed equipment that used water to measure the time, to determine the density of solids, to fight fires, and to create vacuum. Modern engineers exploited water flow to design and construct huge hydroelectric power stations. Waterways and navigation systems were also an essential element for …
Specific Cellular Water Dynamics Observed In Vivo By Neutron Scattering And Nmr., Moeava Tehei, Marion Jasnin, Andreas Stadler, Giuseppe Zaccai
Specific Cellular Water Dynamics Observed In Vivo By Neutron Scattering And Nmr., Moeava Tehei, Marion Jasnin, Andreas Stadler, Giuseppe Zaccai
Faculty of Science - Papers (Archive)
Neutron scattering, by using deuterium labelling, revealed how intracellular water dynamics, measured in vivo in E. coli, human red blood cells and the extreme halophile, Haloarcula marismortui, depends on the cell type and nature of the cytoplasm. The method uniquely permits the determination of motions on the molecular length (Ba˚ ngstrøm) and time (pico- to nanosecond) scales. In the bacterial and human cells, intracellular water beyond the hydration shells of cytoplasmic macromolecules and membrane faces flows as freely as liquid water. It is not ‘‘tamed’’ by confinement. In contrast, in the extreme halophile archaeon, in addition to free and hydration …
Catalytic Solar Water Splitting Inspired By Photosynthesis. Homogeneous Catalysts With A Mechanical ("Machine-Like") Action, Gerhard F. Swiegers, G Charles Dismukes, Leone Spiccia, Robin Brimblecombe, Annette Koo, Jun Chen, Gordon G. Wallace
Catalytic Solar Water Splitting Inspired By Photosynthesis. Homogeneous Catalysts With A Mechanical ("Machine-Like") Action, Gerhard F. Swiegers, G Charles Dismukes, Leone Spiccia, Robin Brimblecombe, Annette Koo, Jun Chen, Gordon G. Wallace
Faculty of Science - Papers (Archive)
Chemical reactions may be controlled by either: the minimum threshold energy that must be overcome during collisions between reactant molecules / atoms (the Activation Energy, Ea), or: the rate at which reactant collisions occur (the Collision Frequency, A) (for reactions with low Ea). Reactions of type (2) are governed by the physical, mechanical interaction of the reactants. Such mechanical processes are unusual, but not unknown in molecular catalysts. We examine the catalytic action and macroscopic properties of several abiological mechanical catalysts and show that they display distinct similarities to enzymes in general. An abiological model of the Photosystem II Water …
Book Review: "Troubled Waters: Confronting The Water Crisis In Australia's Cities" By Patrick Troy (Ed.), Leah M. Gibbs
Book Review: "Troubled Waters: Confronting The Water Crisis In Australia's Cities" By Patrick Troy (Ed.), Leah M. Gibbs
Faculty of Science - Papers (Archive)
Troubled Waters is a collection of essays edited by Patrick Troy, Emeritus Professor and Visiting Fellow at the Fenner School of Environment and Society, Australian National University. The papers are contributed by a multidisciplinary group of authors, from the fields of economics, history, geography, environmental and social policy and law. As a result, the book does not present a single theoretical or methodological approach and in this regard it is refreshing. The book is published by the ANU E Press; a publisher that makes academic output from the ANU freely available from its website, as well as for purchase through …
Geophysical Analysis Of Seasonal Montandon Gravel Ridge Water Table Fluctuation And Moisture Gradient Variation Due To Storm Events, Annie Strader
Geophysical Analysis Of Seasonal Montandon Gravel Ridge Water Table Fluctuation And Moisture Gradient Variation Due To Storm Events, Annie Strader
Honors Theses
The purpose of this research project is to continue exploring the Montandon Long-Term Hydrologic Research Site(LTHR) by using multiple geophysical methods to obtain more accurate and precise information regarding subsurface hydrologic properties of a local gravel ridge,which are important to both the health of surrounding ecosystems and local agriculture. Through using non-invasive geophysical methods such as seismic refraction, Direct Current resistivity and ground penetrating radar (GPR) instead of invasive methods such as boreholedrilling which displace sediment and may alter water flow, data collection is less likely to bias the data itself. In addition to imaging the gravel ridge subsurface, another …
Molecular Dynamics Studies Of Simple Model Fluids And Water Confined In Carbon Nanotube, Jun Wang
Molecular Dynamics Studies Of Simple Model Fluids And Water Confined In Carbon Nanotube, Jun Wang
Department of Chemistry: Dissertations, Theses, and Student Research
Molecular Dynamics (MD) simulation is one of the most important computational techniques with broad applications in physics, chemistry, chemical engineering, materials design and biological science. Traditional computational chemistry refers to quantum calculations based on solving Schrodinger equations. Later developed Density Functional Theory (DFT) based on solving Kohn-Sham equations became the more popular ab initio calculation technique which could deal with ~1000 atoms by explicitly considering electron interactions. In contrast, MD simulation based on solving classical mechanics equations of motion is a totally different technique in the field of computational chemistry. Electron interactions were implicitly included in the empirical atom-based potential …
What Is Wrong With Water Barometers?, Dan Sullivan, Robert W. Smith, E. J. Kemnitz, Kevin Barton, Robert M. Graham, Raymond A. Guenther, Larry Webber
What Is Wrong With Water Barometers?, Dan Sullivan, Robert W. Smith, E. J. Kemnitz, Kevin Barton, Robert M. Graham, Raymond A. Guenther, Larry Webber
Chemistry Faculty Publications
Every student who studies atmospheric pressure in physics or chemistry learns the principles behind the construction of barometers. Cistern barometers, such as those found in most laboratories, consist of a long glass tube containing an inverted column of liquid having an open end in a cistern of the liquid. Students learn that the column of liquid is supported by air pressure and is equal in weight to a column of air of the same diameter.
Breathing Like A Fish, Petros J. Katsioloudis
Breathing Like A Fish, Petros J. Katsioloudis
STEMPS Faculty Publications
The article offers information on industrial oxygen rebreathers, an underwater breathing equipment used by divers. It states that rebreather is an electromechanical device that supply breathing gas through infusion of oxygen and reprocessing of carbon dioxide by using a chemical scrubber. It mentions that most rebreathers comprise of breathing loop, breathing lungs, and a canister where the scrubber is placed with the partial pressure (pO2) sensors and interface devices like heads-up display (HUD) to show pO2 levels. It also discusses types of rebreathers such as the oxygen rebreather, the oldest rebreather mainly used by navy diver, and …