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Dudd, Lucinda M. "Organic chemistry in high-temperature water". Thesis, Nottingham Trent University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403413.
Pełny tekst źródłaMcNeill, Laurie S. "Water Quality Factors Influencing Iron and Lead Corrosion in Drinking Water". Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/28242.
Pełny tekst źródłaPh. D.
Chinnaswamy, Arulmani. "Water vapour and sea surface temperature retrievals". Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270328.
Pełny tekst źródłaWhelton, Andrew James. "Temperature Effects on Drinking Water Odor Perception". Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/36221.
Pełny tekst źródłaThirteen volunteer panelists were trained according to Standard Method 2170, flavor profile analysis (FPA). Following training these panelists underwent triangle test screening to determine whether or not they could detect the odorants used in this study. Following triangle testing, panelists underwent directional difference testing to determine if temperature affected odor perception when presented with two water samples. Following directional difference testing, panelists used FPA and evaluated water samples that contained odorants at either 25°C or 45°C. Samples containing geosmin cooled to 5°C were also evaluated.
Sensory analyses experiments indicate that odor intensity is a function of both aqueous concentration and water temperature for geosmin, MIB, nonadienal, n-hexanal, free chlorine, and 1-butanol. The higher water temperature resulted in an increase in odor intensity for some, but not all, concentrations of geosmin, 2-methylisoborneol, trans-2, cis-6-nonadienal, n-hexanal, free chlorine, and 1-butanol. Additionally, above 400 ng/L of geosmin, 400 ng/L of MIB, and 100 ng/L the odor intensity was equal to or less than the odor intensity at 600, 600, and 200 ng/L, respectively. Henry's Law should predict that an increase in concentration would increase the amount of odorant the panelist comes into contact with; however, results demonstrated that at specific aqueous odorant concentrations odor perception did not follow Henry's Law. Odor response to drinking water containing isobutanal was affected by concentration but not water temperature.
Master of Science
Rosén, Elin, Andreas Abdelki, Beyar Abdulla, Alan Bugurcu i Nabelsi Mahmoud El. "Oxygenation conducted in low temperature clean water". Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-384153.
Pełny tekst źródłaSardo, Rachel. "Anomalous effects while cooling liquid water". Diss., Online access via UMI:, 2007.
Znajdź pełny tekst źródłaTaylor, Diana Jacqueline Falcon. "Temperature insensitive microemulsions". Thesis, University of Hull, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310404.
Pełny tekst źródłaGryga, Michele E. "Water Temperature Controls in the Sheepscot River, Maine". Thesis, Boston College, 2006. http://hdl.handle.net/2345/414.
Pełny tekst źródłaThe Sheepscot River watershed is 590 km2 located in mid-coast Maine. Two branches comprise the river: the main stem and the West Branch, which merge in North Whitefield before flowing into the Gulf of Maine. The Sheepscot River has an imposed form that is strongly influenced by the Norumberga Fault Zone and it flows through glacial deposits. The watershed has a temperate climate because of its location in mid-latitudes in the northern hemisphere. Water temperatures vary in the Sheepscot River over time and along the length of the river. The temporal and spatial variability of the river is due to air temperature, precipitation, discharge from the Palermo Fish Rearing Station, Long Pond, tree shade, confluence, and drainage area. Analysis of these hypothesized controls revolves around field water temperature measurements made between August 2005 and January 2006 and data collected from the North Whitefield gauging station. Supplementary digital spatial data from the Maine Geographic Information Systems data set were also used. Field measurements were taken at seven sites directly upstream and downstream of assumed controls. Climactic features of the watershed exert the main control over the entire river. Air temperature is the first order controls on water temperatures. Precipitation has some effect on water temperature but of less significance than air temperature. The river system has three areas that are affected by different combinations of the other controls: the upper main stem, the West Branch, and the lower main stem. Discharge from the Palermo Fish Rearing Station is the second major controlling factor of water temperature in the upper main stem. Its buffering effect is diluted downstream. Long Pond also affects the upper main stem by warming the water in the summer and cooling it in the winter. Drainage area explains variability in the West Branch and lower main stem. As drainage area increases downstream, water temperatures are controlled by more integrated factors. As a result of this the West Branch fluctuates more than the main stem because it has a smaller drainage area. Temperatures in the downstream reaches are less sensitive to any single control. Confluence and tree cover exert less influence over the system than other controls
Thesis (BS) — Boston College, 2006
Submitted to: Boston College. College of Arts and Sciences
Discipline: Geology and Geophysics
Discipline: College Honors Program
Parks, Olivia Waverly. "Effect of water temperature on cohesive soil erosion". Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/49663.
Pełny tekst źródłaeffect of water temperature on cohesive soil erosion should be explored. The objectives of this study are to: determine the effect of water temperature on the erosion rates of clay; determine how erosion rates vary with clay mineralogy; and, explore the relationship between zeta potential and erosion rate. Samples of kaolinite- and montmorillonite-sand mixtures, and vermiculite-dominated soil were placed in the wall of a recirculating flume channel using a vertical sample orientation. Erosion rate was measured under a range of shear stresses (0.1-20 Pa) for a period of five minutes per shear stress at water temperatures of 12, 20, and 27�"C. The zeta potential was determined for each clay type at the three testing temperatures and compared to mean erosion rates. The kaolinite erosion rate doubled when the temperature increased from 12 to 20�"C, and erosion of vermiculite samples tripled when the temperature increased from 20 to 27�"C. The montmorillonite samples generally eroded through mechanical failure rather than fluvial erosion, and the limited fluvial erosion of the montmorillonite-sand mixture was not correlated with water temperature. The data suggest correlation between zeta potential and erosion rate; however, due to the small sample size (n=3), statistically significant correlation was not indicated. Research should continue to explore the influence of water temperature on cohesive soil erosion to better understand the influence of clay mineralogy. Due to the high degree of variability in cohesive soil erosion, multiple replications should be used in future work. The vertical sample orientation enabled discrimination between fluvial erosion and mass wasting and is recommended for future studies.
Master of Science
Sousa, Magda Catarina Ferreira de. "Water temperature variability analysis along the Espinheiro Channel". Master's thesis, Universidade de Aveiro, 2008. http://hdl.handle.net/10773/2594.
Pełny tekst źródłaO canal do Espinheiro é um dos quatro principais canais da Ria de Aveiro, fazendo a ligação entre o Rio Vouga e o Oceano Atlântico. Nesta zona é onde se dá a mistura entre a água salgada proveniente do oceano e a água doce de origem fluvial. Para fazer a monitorização da temperatura da água no Canal do Espinheiro foi utilizada uma nova tecnologia que consiste num cabo de fibra óptica longitudinal de 10 km de extensão, com 18 sensores de temperatura espaçados de 500 m, desde a embocadura até à foz do Rio Vouga. Resultados de um ano de monitorização da temperatura da água permitiram estudar a sua variabilidade espacial e temporal em função de dois forçamentos principais: maré e condições meteorológicas. A evolução temporal longitudinal da temperatura da água foi estudada, tendo sido aplicadas técnicas matemáticas, tais como: análise espectral, análise espectral cruzada e funções empíricas ortogonais (EOFs). A análise espectral mostra picos de maior energia que surgem nas frequências semi-diurnas e diurnas. Estas frequências podem estar relacionadas com a variação diurna da temperatura do ar e da maré, mostrando a importância das variáveis meteorológicas na modulação da temperatura da água em regiões pouco profundas. A análise espectral cruzada permitiu avaliar o desfasamento temporal entre a temperatura da água e do ar, que varia conforme a profundidade do local. Também permitiu observar que a maré tem uma grande influência na distribuição da temperatura da água, nomeadamente perto da embocadura da laguna. As EOFs mostram que a variabilidade da temperatura da água pode ser explicada maioritariamente pela primeira componente, que está relacionada com a variação anual da temperatura do ar. Os resultados mostram que os dois forçamentos principais (maré e condições meteorológicas) determinam a temperatura da água no interior do canal do Espinheiro. Verifica-se ainda que a distribuição da temperatura da água é influenciada também pela variação sazonal das condições meteorológicas e pelas variações de profundidade do canal, que apresenta zonas de reduzida profundidade. ABSTRACT: The Espinheiro channel is one of the four main branches of Ria de Aveiro, establishing the connection between the Vouga River and the Atlantic Ocean. This zone is where occurs the mixing between the salt water from the ocean and the freshwater from fluvial origin. In order to monitoring the water temperature in the Espinheiro channel a new technology was used, consisting on an optical-fibre longitudinal cable 10 km long with 18 temperature sensors separated by 500 m, from the mouth of the lagoon to the mouth of Vouga River. Results of a one year monitoring of water temperature permitted to study its spatial and temporal variability in terms of two major forcing: tides and meteorological conditions. The temporal evolution of the longitudinal water temperature was studied, and mathematical techniques, such as spectral analysis, cross-spectral analysis and Empirical Orthogonal Functions (EOFs) were applied to the data. The spectral analysis shows high energy peaks in both semidiurnal and diurnal frequencies. These frequencies may be related to the daily variation and tidal forcing, demonstrating the importance of the meteorological variables in the modulation of the water temperature in shallow areas. The cross-spectral analysis permitted to evaluate the time lag between the water and air temperature, which varies depending on the local depth. It also permitted to observe that the tide has a great influence on the water temperature distribution, particularly near the mouth of the lagoon. EOFs show that the variability of the water temperature can be explained by the first component, which is closely related to the annual variation of the air temperature. The results show the importance of the two major forcings (tides and meteorological conditions) that determine the water temperature within the Espinheiro channel. It can also be observed that the water temperature distribution is also influenced by the seasonal variation of meteorological conditions and by the channel’s depth variation, which presents very shallow areas.
Shepard, Dawn Joy. "Modeling water temperature in small agricultural drainage watercourses". Online access for everyone, 2005. http://www.dissertations.wsu.edu/Thesis/Summer2005/D%5FShepard%5F061505.pdf.
Pełny tekst źródłaPivato, Mattia. "Water and Sediment Temperature Dynamics in Shallow Tidal Environments". Doctoral thesis, Università degli studi di Padova, 2018. http://hdl.handle.net/11577/3427269.
Pełny tekst źródłaLo scopo della presente ricerca è di studiare la dinamica della temperatura dell'acqua e dei sedimenti in ambienti costieri poco profondi. La temperatura dell'acqua e dei sedimenti è certamente uno dei fattori più importanti per numerosi processi fisici e biologici che determinano l'evoluzione a breve e lungo termine degli ambienti acquatici. In letteratura si trovano pochi dati e pochi lavori che analizzano nello specifico i flussi di calore all’interfaccia sedimenti-acqua (SWI). Abbiamo quindi pianificato e realizzato una campagna di misura ad hoc della durata di un anno in laguna di Venezia al fine di raccogliere dati di temperatura dell’acqua e del fondale. L'analisi dei dati ha mostrato che, nel sito da noi considerato, la temperatura si può assumere distribuita uniformemente nella colonna d'acqua. I dati sono stati quindi utilizzati per stimare il flusso di energia all'interfaccia tra acqua e fondale. Sulla base di questi risultati, abbiamo sviluppato un modello ``puntuale'' per descrivere la dinamica del profilo verticale di temperatura nel continuo acqua-sedimento in ambienti a marea caratterizzati da bassi fondali. Modellando il flusso di energia al fondo come la somma di una componente conduttiva e della radiazione solare residua al fondo, si è osservato che la seconda risulta essere trascurabile. I risultati ottenuti mostrano inoltre che il trasporto orizzontale di calore legato alle correnti di marea, e pertanto l'applicabilità del modello ``puntuale'', è limitata ai periodi caratterizzati da condizioni tali da limitare l'avvezione (i.e. marea di quadratura e/o poca differenza tra la temperatura dell'acqua in mare e all'interno della laguna). I risultati forniti dal modello per periodi caratterizzati da avvezione trascurabile sono soddisfacenti. Sia l’analisi dei dati che i risultati forniti dal modello mostrano che lo scambio di calore tra acqua e fondale è di cruciale importanza per descrivere la temperatura dei sedimenti, mentre risulta trascurabile per la dinamica della temperatura dell’acqua. Questo suggerisce che, in prima approssimazione, la dinamica della temperatura della colonna d’acqua può essere modellata trascurando lo scambio di calore tra acqua e sedimenti. L'applicazione del modello ad una condizione sintetica ha quindi permesso di analizzare l'effetto di diverse condizioni di torbidità della colonna d'acqua sulla dinamica della temperatura della colonna d'acqua stessa e dei sedimenti al fondo, e quindi sulla capacità fotsintetica del microfitobentos, i.e. comunità di micro-alghe tipicamente presenti in ambienti costieri. I risultati mostrano che la dinamica della temperatura dell'acqua risente poco delle diverse condizioni di torbidità, mentre la temperatura dei sedimenti al fondo varia in modo significativo, soprattutto per fondali particolarmente bassi (i.e. ≤ 0.5 m). La capacità fotosintetica del microfitobentos, considerando l'andamento medio a scala annuale, risulta favorita dal condizioni acqua limpida, in quanto la disponibilità di luce al fondo risulta essere il principale fattore limitante per la fotosintesi. I risultati suggeriscono quindi la possibilità di indagare l'esistenza di un possibile feedback positivo tra torbidità della colonna d'acqua e proliferazione del microfitobentos, chiaramente legata alla sua capacità fotosintetica. Il microfitobentos infatti produce un biofilm che, se presente in quantità rilevanti, ha un effetto di bio-stabilizzazione del fondale che limita l'erosione e la risospensione dei sedimenti, e quindi una potenziale riduzione della torbidità dell'acqua.
Buck, Christina Rene. "Managing Groundwater for Environmental Stream Temperature". Thesis, University of California, Davis, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3565483.
Pełny tekst źródłaThis research explores the benefits of conjunctively managed surface and groundwater resources in a volcanic aquifer system to reduce stream temperatures while valuing agricultural deliveries. The example problem involves advancing the understanding of flows, stream temperature, and groundwater dynamics in the Shasta Valley of Northern California. Three levels of interaction are explored from field data, to regional simulation, to regional management optimization. Stream temperature processes are explored using Distributed Temperature Sensing (DTS) data from the Shasta River and recalibrating an existing physically-based flow and temperature model of the Shasta River. DTS technology can collect abundant high resolution river temperature data over space and time to improve development and performance of modeled river temperatures. These data also identify and quantify thermal variability of micro-habitat that temperature modeling and standard temperature sampling do not capture. This helps bracket uncertainty of daily temperature variation in reaches, pools, side channels, and from cool or warm surface or subsurface inflows. The application highlights the influence of air temperature on stream temperatures, and indicates that physically-based numerical temperature models, using a heat balance approach as opposed to statistical models, may under-represent this important stream temperature driver. The utility of DTS to improve model performance and detailed evaluation of hydrologic processes is demonstrated.
Second, development and calibration of a numerical groundwater model of the Pluto's Cave basalt aquifer and Parks Creek valley area in the eastern portion of Shasta Valley helps quantify and organize the current conceptual model of this Cascade fracture flow dominated aquifer. Model development provides insight on system dynamics, helps identify important and influential components of the system, and highlights additional data needs. The objective of this model development is to reasonably represent regional groundwater flow and to explore the connection between Mount Shasta recharge, pumping, and Big Springs flow. The model organizes and incorporates available data from a wide variety of sources and presents approaches to quantify the major flow paths and fluxes. Major water balance components are estimated for 2008-2011. Sensitivity analysis assesses the degree to which uncertainty in boundary flow affects model results, particularly spring flow.
Finally, this work uses optimization to explore coordinated hourly surface and groundwater operations to benefit Shasta River stream temperatures upstream of its confluence with Parks Creek. The management strategy coordinates reservoir releases and diversions to irrigated pasture adjacent to the river and it supplements river flows with pumped cool groundwater from a nearby well. A basic problem formulation is presented with results, sensitivity analysis, and insights. The problem is also formulated for the Shasta River application. Optimized results for a week in July suggest daily maximum and minimum stream temperatures can be reduced with strategic operation of the water supply portfolio. These temperature benefits nevertheless have significant costs from reduced irrigation diversions. Increased irrigation efficiency would reduce warm tail water discharges to the river instead of reducing diversions. With increased efficiency, diversions increase and shortage costs decrease. Tradeoffs and sensitivity of model inputs are explored and results discussed.
Flynn, Timothy Joseph. "Water temperature as a groundwater tracer in fractured rock". Thesis, The University of Arizona, 1985. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1985_143_sip1_w.pdf&type=application/pdf.
Pełny tekst źródłaSu, Yibing. "Real-time prediction of stream water temperature for Iowa". Thesis, University of Iowa, 2017. https://ir.uiowa.edu/etd/5653.
Pełny tekst źródłaWimer, Gregory Spencer. "Effect of Temperature of Ingested Water on Themoregulation During Moderate Exercise in a Temperate Environment /". The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487933245536971.
Pełny tekst źródłaMonohan, Carrie Elise. "Riparian buffer function with respect to nitrogen transformation and temperature along lowland agricultural streams in Skagit County, Washington /". Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/5591.
Pełny tekst źródłaMasters, Sheldon. "Lead and Copper Contamination in Potable Water: Impacts of Redox Gradients, Water Age, Water Main Pipe Materials and Temperature". Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/73338.
Pełny tekst źródłaPh. D.
Lawler, Jennifer Rae Noelle 1962. "Eichhornia crassipes (Mart) Solms in wastewater treatment: Reducing low-temperature stress". Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/291651.
Pełny tekst źródłaCastelo-Branco, João Diogo Cristovão Pinto. "Myrosinase stability in broccoli (Brassica oleracea var. italica). Influence of temperature and water activity". Master's thesis, ISA, 2010. http://hdl.handle.net/10400.5/2881.
Pełny tekst źródłaEpidemiological studies have shown that a diet rich in Brassica vegetables is associated with a decreasing risk of incidence of some types of cancer. These health promoting effects are most likely due to the breakdown products of glucosinolates formed by the action of myrosinase which catalyzes the hydrolysis of glucosinolates, found in Brassica plants. Industrial processing of food can affect the content, composition, activity and bioavailability of glucosinolates breakdown products, due to cell lysis or glucosinolates and myrosinase degradation. The aim of this thesis is to investigate the combined effect of moisture content (water activity) and temperature on myrosinase stability. The study was conducted in batches of freeze dried broccoli with different moisture contents. These batches of broccoli were then heated at different time/temperature combinations and myrosinase activity was analysed, the obtained results from these measurements were kinetically modeled. Myrosinase was shown to be much less thermo stable in higher moisture content samples than in the driest samples. Thermal stability (30-80 ºC) of myrosinase was described by a first order kinetic model. Besides showing higher myrosinase thermal stability, driest samples show lower activation energies, i.e, lower increase of degradation rate when temperature increases.
Morello, Gerry F. "Temperature and heat transfer studies in a water immersion retort". Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/28556.
Pełny tekst źródłaLand and Food Systems, Faculty of
Graduate
Carter, James. "Gold catalysts for the low-temperature water-gas shift reaction". Thesis, Cardiff University, 2016. http://orca.cf.ac.uk/94306/.
Pełny tekst źródłaBurchell, Ian Robert. "Water vapour and temperature retrievals from the EURECA occultation radiometer". Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337562.
Pełny tekst źródłaVenardou, Eleni. "Spectroscopic reaction monitoring in water under high temperature and pressure". Thesis, University of Nottingham, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.404782.
Pełny tekst źródłaFegan, J. J. H. "Environment assisted cracking of deaerator steels in high temperature water". Thesis, University of Newcastle Upon Tyne, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260856.
Pełny tekst źródłaLi, Guangfu. "The performance of transition joints in high temperature water environments". Thesis, University of Newcastle Upon Tyne, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362413.
Pełny tekst źródłaCarrier, Roxie. "Temperature Tolerance of Freshwater Fish Exposed to Water-Borne Cadmium". Thesis, North Texas State University, 1987. https://digital.library.unt.edu/ark:/67531/metadc504077/.
Pełny tekst źródłaWilliams, Michael Shelby 1954. "BODY TEMPERATURE, EVAPORATIVE WATER LOSS AND ACCLIMATION IN POLISTES WASPS". Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/277325.
Pełny tekst źródłaBenny, S. "High temperature water gas shift catalysts : a computer modelling study". Thesis, University College London (University of London), 2010. http://discovery.ucl.ac.uk/20444/.
Pełny tekst źródłaKim, Seok-Jhin. "High Temperature Water Gas Shift Reaction in Zeolite Membrane Reactors". University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1321888491.
Pełny tekst źródłaRoberts, Stephen. "Performance of gold catalysts for low temperature water gas shift". Master's thesis, University of Cape Town, 2001. http://hdl.handle.net/11427/14970.
Pełny tekst źródłaThe ultimate objective of the study was to investigate the performance of suitably prepared gold catalysts for low temperature water gas shift (LTS) - and more specifically to investigate the performance of these catalysts at temperatures below those traditionally utilised. As opposed to the research undertaken to-date on gold catalysed water gas shift, the reaction was performed, as far as possible, under conditions resembling those found industrially, viz. conditions of temperature, pressure, WHSV and dry feed gas composition typical of those applicable to industrial LTS units. Important to this study was therefore the generation of a comprehensive performance benchmark for the commercially available LTS catalyst, a copper-based material, against which to compare the performance of the gold deposited catalysts. The gold catalysts were prepared by deposition-precipitation, a preparation procedure found to yield nano-sized gold particles, suggested in literature as being crucial for activity, on the metal oxide support. Using this procedure, gold promoted low (copper) and high (iron oxide) temperature shift catalysts and commercial zinc oxide supports were prepared and tested. A wide spectrum of Au particle sizes were prepared on the supports, ranging from approximately 3-500 nm. The gold promoted LTS catalyst was found to exhibit slightly higher activity than the commercially available catalyst at temperatures below the conventional LTS range. It would appear as if gold promotion is advantageous to the industrial catalyst and could impact greatly on LTS catalyst life. Even though substantially less active than the commercial copper catalyst was found, the gold promoted commercial zinc oxide catalyst exhibited significantly higher activity than that previously quoted in literature and better performance than the iron oxide supported catalysts of this study. Consequently, the Au/ZnO system exhibits good potential for further developments in terms of water gas shift conversion.
Smith, Alan. "The effects of inlet water temperature on condensing film coefficients /". Online version of thesis, 1995. http://hdl.handle.net/1850/11923.
Pełny tekst źródłaHawkins, Richard H., i Francisco L. Santos. "Annual Water Yield Using Precipitation and Temperature: Grunsky's Equation Reconsidered". Arizona-Nevada Academy of Science, 2009. http://hdl.handle.net/10150/296696.
Pełny tekst źródłaParry, Christopher K. "Biophysically-Based Measurement of Plant Water Status Using Canopy Temperature". DigitalCommons@USU, 2014. https://digitalcommons.usu.edu/etd/3563.
Pełny tekst źródłaNelson, Jacob A. "Postharvest Degradation of Microalgae: Effect of Temperature and Water Activity". DigitalCommons@USU, 2015. https://digitalcommons.usu.edu/etd/4458.
Pełny tekst źródłaMolyneaux, Glenn Arthur. "Resorption cycle heat pump with ammonia-water working fluid". Thesis, University of Ulster, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326335.
Pełny tekst źródłaSylvia, Stephen F. "Effects of physiological state, temperature, water, and extended mixing on low-fat, high-added water frankfurters". Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-09042008-063636/.
Pełny tekst źródłaHansen, R. Peder. "Analysis and prediction of the water temperature of the McKenzie River, Oregon using the equilibrium temperature approach". PDXScholar, 1986. https://pdxscholar.library.pdx.edu/open_access_etds/3610.
Pełny tekst źródłaGrant, Annie, i Ingrid Luffman. "IS WATER QUALITY IN BOONE LAKE A DAM PROBLEM? AN ASSESSMENT OF WATER QUALITY PRE- AND POST- DRAWDOWN". Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/asrf/2018/schedule/115.
Pełny tekst źródłaPilson, Richard Adair. "The effect of temperature on denitrification kinetics and biological excess phosphorus removal in nutrient removal activated sludge systems in temperate climates (12°C - 20°C)". Master's thesis, University of Cape Town, 1995. http://hdl.handle.net/11427/22577.
Pełny tekst źródłaZhu, Ni. "Long-Term Lab Scale Studies of Simulated Reclaimed Water Distribution: Effects of Disinfectants, Biofiltration, Temperature and Rig Design". Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/96702.
Pełny tekst źródłaDoctor of Philosophy
Increasing water scarcity is creating an impetus for creating more sustainable water supplies. Wastewater effluent is increasingly viewed as in important resource that can reduce both water and energy demand. Reclaiming moderately to minimally-treated secondary wastewater effluent for non-potable reuse (NPR) applications; such as agricultural irrigation, landscaping, and toilet flushing, helps reduce demand for higher quality potable water sources. NPR presently accounts for more than 50% of total reuse and is projected to become increasingly important. While NPR is attractive, important knowledge gaps remain in terms of managing water quality and safety as it is transported through distribution pipes to the point of use. A comprehensive literature review revealed that NPR distribution systems are distinct from conventional drinking water distribution systems (DWDSs) and that it is doubtful if our current understanding of DWDSs would directly transfer to NPR systems. Unlike drinking water systems, NPR systems are currently unregulated at the national level and corresponding state-to-state regulations vary widely. The levels of water treatment can vary from simply distributing untreated effluent from wastewater treatment plants to very high-level treatment with membranes that produces water of equal or even higher quality than many existing tap waters. A common treatment train for minimally-treated NPR involves biologically activated carbon (BAC) filtration and the use of disinfectants (e.g., chlorine or chloramine) to control microbial water quality to the point of use. Prior studies from DWDSs have demonstrated water quality degradation in terms of disinfectant loss, bacterial growth, and aesthetic problems, with the settling of trace particulate matter producing sediment within pipe distribution systems. In particular, accumulated sediment can become a hotspot for water quality deterioration. Considering that minimally-treated reclaimed water can have much higher levels of particulate matter and nutrients than drinking water, it was predicted that NPR distribution systems could suffer from faster water quality degradation than corresponding drinking water systems, especially at the warmer temperatures common in water-scarce regions. This work was the first multi-year attempt to examine the effects of disinfectant (i.e. free chlorine, chloramine, no residual), BAC filtration versus no filtration, water age (up to 5-d versus 28-min), and temperature (14°C, 22°C, 30°C) in different types of lab-scale reactors. Two simulated reclaimed water distribution systems (SRWDSs) including 4-in. diameter Pipe SRWDSs versus 1/8-in. diameter Tube SRWDSs, were designed to study key aspects of full-scale NPR systems and were operated for more than two years to study chemical and microbial changes as distributed water traveled through the two systems. The Pipe SRWDSs were designed to assess the impacts on final water quality after long-term operation that allowed sediment to slowly accumulate, whereas the complementary Tube SRWDS design did not allow sediment to accumulate and only held the water for 28 minutes. Water was sampled regularly to track the trends of key water quality parameters, including disinfectant residuals, dissolved oxygen, nitrogen compounds involved in nitrification reactions, and various types of bacteria of interest. Sequencing of the biological genetic materials on selected samples was conducted to understand the types of bacteria present and their functions under the different circumstances. High levels of sediment were found to accumulate near the beginning of the Pipe SRWDSs, which caused loss of oxygen and disinfectants at the bottom of the pipes. Chlorine was more persistent and better at preventing bacteria growth as water traveled through the distribution system. In contrast, a type of bacteria that used ammonia as a nutrient (i.e., nitrifying bacteria) were observed in the pipes with chloramine (i.e., ammonia plus chlorine) as the disinfectant. The nitrifying bacteria caused rapid depletion of chloramine residuals, especially at temperatures above 22°C. At 30°C both chlorine and chloramine were almost immediately consumed in the pipe reactors. Nitrification is known to trigger water quality problems in chloraminated DWDSs, and we expect that chloraminated RWDSs would be even more susceptible to nitrification and associated water quality degradation issues in Compare the Tube SRWDSs to the Pipe SRWDSs, aside from heavy accumulations of sediment in the pipes versus no sediment in the thin tubes, the tubes clogged repeatedly from formation of thick biofoulants in the systems treated with no disinfectant and chloramine, whereas they remained relatively free of biofoulants and clogging in the tubes with chlorine. Even in just 28 minutes, it took water to move from the start to the end of the tube, both chlorine and chloramine were almost completely consumed in the tubes, due to the unrealistically high pipe surface area to the small flow volume inherent to this reactor design. As NPR becomes increasingly common to help achieve water sustainability, it will be important to deploy laboratory simulations, that are capable of testing and revealing key chemical and microbial processes that affect the operation of these systems and water safety at the point of use. The insights from this first long-term effort of simulating RWDSs highlight some unique characteristics and challenges of RWDSs, and reveals key concepts to help guide future research.
Akalin, Suleyman. "Water temperature effect on sand transport by size fraction in the Lower Mississippi River". Access citation and abstract, 2002. http://wwwlib.umi.com/dissertations/fullcit/3075335.
Pełny tekst źródłaJoseph, Jyothis. "Improving Photovoltaic Panel Efficiency by Cooling Water Circulation". Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1404617/.
Pełny tekst źródłaEriksson, Mimmi. "Corrosion and microfluidics in hot water microsystems". Thesis, Uppsala universitet, Mikrosystemteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-207573.
Pełny tekst źródłaFriesen, Brian J. "Whole-Body Cooling Following Exercise-Induced Hyperthermia: Biophysical Considerations". Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30510.
Pełny tekst źródłaChang, Chao-Ting. "Soil water availability regulates soil respiration temperature dependence in Mediterranean forests". Doctoral thesis, Universitat de Barcelona, 2017. http://hdl.handle.net/10803/406082.
Pełny tekst źródłaLas variaciones de la respiración del ecosistema y del suelo son principalmente impulsadas por la temperatura y la precipitación, pero la importancia de la temperatura y la precipitación puede variar a lo largo del tiempo y el espacio. En las escalas temporales diurnas a anuales, la respiración del ecosistema y del suelo generalmente aumenta con la temperatura media anual, pero se ha demostrado que la humedad del suelo muy baja o muy alta disminuye la respuesta a la temperatura de la respiración. Por lo tanto, en ecosistemas con escasez de agua, como la región mediterránea, donde el patrón estacional se caracteriza por sequías significativas en verano, es probable que los patrones de precipitación jueguen un papel particularmente importante en la regulación de la respiración del ecosistema y del suelo. En esta tesis, intento reducir las incertidumbres del intercambio de ecosistemas netos terrestres en la región mediterránea midiendo la interacción entre los factores ambientales y la respiración del suelo a escalas temporales cortas (diurnas) y medias (estacionales). Se utilizaron tres experimentos in situ para investigar cómo la respiración del suelo responde a las variaciones y manejo del ambiente. En conjunto, estos tres estudios dieron una imagen consistente de cómo la humedad del suelo afecta fuertemente la dinámica y la magnitud de la respiración del suelo en los bosques mediterráneos. Los resultados dilucidaron un umbral claro de humedad del suelo; Cuando la humedad del suelo está por encima de este umbral, la temperatura del suelo es el principal impulsor de la respiración del suelo, mientras que la humedad del suelo está por debajo de este umbral, la respiración del suelo está desacoplada de la temperatura del suelo y controlada por la humedad del suelo. Esto sugiere que la humedad del suelo modificó, al menos en los ecosistemas mediterráneos, la sensibilidad a la temperatura de la respiración a través de la respuesta tipo umbral.
Lei, Yun School of Chemical Engineering & Industrial Chemistry UNSW. "Novel Fe2O3-Cr2O3 catalyst for high temperature water gas shift reaction". Awarded by:University of New South Wales. School of Chemical Engineering and Industrial Chemistry, 2005. http://handle.unsw.edu.au/1959.4/23321.
Pełny tekst źródłaFonseca, Rojas Mirla Josefina. "Phase behaviour modelling of water-hydrocarbon in high temperature petroleum reservoirs". Thesis, Heriot-Watt University, 2006. http://hdl.handle.net/10399/2152.
Pełny tekst źródłaClutter, Melissa, i Melissa Clutter. "The Use of Subsurface Temperature Fluctuations to Estimate Plant Water Use". Thesis, The University of Arizona, 2016. http://hdl.handle.net/10150/621451.
Pełny tekst źródłaBEKOU, EVANGELIA. "EXTRACTION OF ORGANIC CONTAMINANTS USING ROOM TEMPERATURE WATER-IMMISCIBLE IONIC LIQUIDS". University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1045773164.
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