Gotowe bibliografie tematyczne / Residence time and flushing

Gotowa bibliografia na temat „Residence time and flushing”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 1 lutego 2022

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Artykuły w czasopismach na temat "Residence time and flushing"

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Mayer, B., T. Stacke, I. Stottmeister i T. Pohlmann. "Sunda Shelf Seas: flushing rates and residence times". Ocean Science Discussions 12, nr 3 (22.05.2015): 863–95. http://dx.doi.org/10.5194/osd-12-863-2015.

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Abstract. The region of the Sunda Shelf has an average depth of approx. 48 m and is subject to many physical and biogeochemical processes with a strong impact from human activities. For the investigation of marine environmental water properties and quality, it is helpful to have an idea about exchange rates of water masses in the different parts of this region. Four numerical models, the global hydrodynamical model MPI-OM, the global hydrological model MPI-HM, the regional hydrodynamical model HAMSOM and a Lagrangian tracer model have been utilized to estimate the flushing rates and residence times in different seas on the Sunda Shelf. Using decadal averaged monthly transports, the commonly used flushing rate formula gives rates for the different months of approximately 40 to 70 days for the entire Sunda Shelf. For most parts of it (Malacca Strait, southern South China Sea, Java Sea), the results are similar, while for the Gulf of Thailand, the flushing rates amount to 80 to 170 days. The tracer model provides quite different but very detailed 3-D pictures with residence times of below 30 days to more than two years, depending on the location within the region, on the starting layer and on the season.
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Hasanloo, Davood, i Amir Etemad-Shahidi. "On the estimation of transport timescales – case study: the Dez reservoir". Journal of Hydroinformatics 13, nr 2 (29.04.2010): 217–28. http://dx.doi.org/10.2166/hydro.2010.161.

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The purpose of this study is to demonstrate an application of a hydroinformatics methodology for analysis of transport timescales in a large reservoir. Therefore, a laterally averaged two-dimensional numerical model was used to estimate the transit time, flushing times and combination of these two timescales by modeling about 230 scenarios in the Dez reservoir. The model was calibrated using temperature profiles and then executed for a period of two years (2002–2004). A possible characterization of the flushing time as e-folding time was investigated and the results revealed that the e-folding time, which is simpler to estimate, can be used in place of the flushing time in the Dez reservoir. The effects of the location of the outlet on each of these timescales were also investigated. Results indicated that the mean residence and flushing times have their smallest value when the outlet is set in the middle of the Dez dam. The mean flushing times were also less sensitive to thermal structures of the Dez reservoir than the transit times. Finally, the temporal patterns of these timescales were elucidated. It was found that no single transport timescale can be used for all conditions.
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Monsen, Nancy E., James E. Cloern, Lisa V. Lucas i Stephen G. Monismith. "A comment on the use of flushing time, residence time, and age as transport time scales". Limnology and Oceanography 47, nr 5 (wrzesień 2002): 1545–53. http://dx.doi.org/10.4319/lo.2002.47.5.1545.

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Cornett, R. J., i L. Chant. "Pu Residence Times in Freshwaters and Accumulation in Shield Lake Sediments". Canadian Journal of Fisheries and Aquatic Sciences 45, nr 3 (1.03.1988): 407–15. http://dx.doi.org/10.1139/f88-049.

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Activity balances for 239,240Pu in seven oligotrophic lakes were constructed from measurements of 239,240Pu inputs and measurements of 239,240Pu accumulated in the lake sediments. 239,240Pu eroded from the catchment was a significant input to lakes with rapid hydrologic flushing rates. From 28 to 100% of the 239,240Pu input to the lakes accumulated in the lake sediments. The fraction of 239,240Pu inputs accumulated in the lake sediments was inversely correlated with the hydrologic flushing rate of the lake. 239,240Pu concentrations in the sediments were simulated using a single reservoir input–output model. Partial residence times for 239,240Pu transfer from the water to the sediments ranged from 0.09 to 2.7 yr and were shorter in lakes with more rapid flushing. Partial residence times of 239,240Pu in these small shield lakes were very similar to the residence times of 239,240Pu in the Laurentian Great Lakes and to those of 137Cs and 210Pb in other small oligotrophic lakes.
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John, Sebin, K. R. Muraleedharan, C. Revichandran, S. Abdul Azeez, G. Seena i Pierre W. Cazenave. "What Controls the Flushing Efficiency and Particle Transport Pathways in a Tropical Estuary? Cochin Estuary, Southwest Coast of India". Water 12, nr 3 (23.03.2020): 908. http://dx.doi.org/10.3390/w12030908.

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Estuaries with poor flushing and longer residence time retain effluents and pollutants, ultimately resulting in eutrophication, a decline in biodiversity and, finally, deterioration of water quality. Cochin Estuary (CE), southwest coast of India, is under the threat of nutrient enrichment by the anthropogenic interventions and terrestrial inputs through land runoff. The present study used the FVCOM hydrodynamic model coupled with the Lagrangian particle module (passive) to estimate the residence time and to delineate site-specific transport pathways in the CE. The back and forth movements and residence time of particles was elucidated by using metrics such as path length, net displacement and tortuosity. Spatio-temporal patterns of the particle distribution in the CE showed a similar trend during monsoon and post-monsoon with an average residence time of 25 and 30 days, respectively. During the low river discharge period (pre-monsoon), flood-ebb velocities resulted in a minimum net transport of the water and longer residence time of 90 days compared to that of the high discharge period (monsoon). During the pre-monsoon, particle released at the southern upstream (station 15) traversed a path length of 350 km in 90 days before being flushed out through the Fortkochi inlet, where the axial distance was only 35 km. This indicates that the retention capacity of pollutants within the system is very high and can adversely affect the water quality of the ecosystem. However, path length (120 km) and residence time (7.5 days) of CE were considerably reduced during the high discharge period. Thus the reduced path length and the lower residence time can effectively transport the pollutants reaching the system, which will ultimately restore the healthy ecosystem. This is a pioneer attempt to estimate the flushing characteristics and residence time of the CE by integrating the hydrodynamics and Lagrangian particle tracking module of FVCOM. This information is vital for the sustainable management of sensitive ecosystems.
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Organ, A. J. "Analysis of the gas turbine rotary regenerator". Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 211, nr 2 (1.02.1997): 97–111. http://dx.doi.org/10.1243/0954407971526263.

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Recent solution of the ‘Hausen’ regenerator and conjugate heat transfer problems invites a fresh look at the Ritz rotary regenerator. The approach deals readily with the reflux phase (‘hold-up’, flushing or ‘residence time’) and with the effects of friction (re-heating and pressure drop). There is no necessity to assume constant Stanton number, Nst, and friction factor, Cf. With accurate temperature and flow solutions available, recovery ratios in terms of operating parameters are a fait accompli. Optimization for specified duty becomes possible.
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Kim, Jin Ho, Won Chan Lee, Sok Jin Hong, Jung Hyun Park, Chung Sook Kim, Woo Sung Jung i Dong-Myung Kim. "A Study on Temporal-Spatial Water Exchange Characteristics in Gamak Bay using a Method for Calculating Residence Time and Flushing Time". Journal of Environmental Science International 25, nr 8 (30.08.2016): 1087–95. http://dx.doi.org/10.5322/jesi.2016.25.8.1087.

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Murphy, Enda, Mathieu Deiber i Sylvain Perrin. "SHEAR-DRIVEN FLUSHING OF MICRO-TIDAL MARINAS". Coastal Engineering Proceedings 1, nr 33 (15.12.2012): 59. http://dx.doi.org/10.9753/icce.v33.currents.59.

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Flushing or residence times are typically used as a first step in assessing water quality in marinas, harbours and coastal basins. Recent publications have offered guidance in relation to optimal marina basin and entrance geometries to help achieve rapid renewal. However, these guidelines have been developed for the particular case where water exchange is strongly tide-driven and are not widely applicable, particularly in micro-tidal regions. Where water renewal rates are dominated by shear-driven circulation and lateral transfer of momentum at the interface between the marina and the adjacent water body (i.e. a mixing layer), there is a strong analogy to groyne fields and other cases involving flows containing quasi-stagnant peripheral areas (dead zones). A series of numerical hydrodynamic models, developed in the TELEMAC system, were used to investigate the potential for the dead zone model of water exchange to provide a better means to guide optimization of basin and entrance geometry under such conditions. Real-world marina case studies were used to identify any constraints affecting the practical implementation of such an approach. The numerical model results demonstrate particular conditions under which the dead zone model of water exchange can be used effectively to optimize marina basin and entrance geometry.
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Chen, Yucheng, Jian-nan Fu, Yi Wang, Jian Ding, Xiaoying Lian, Weizhi Wei i Xiao Chen. "Microbial Risks in Household UF Purifiers and Disinfection Strategy with Electrolysis". E3S Web of Conferences 143 (2020): 02028. http://dx.doi.org/10.1051/e3sconf/202014302028.

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The research studied microbial deterioration in household ultrafiltration membrane (UF) purifiers with residence time and anti-bacterial strategy with electrolysis. The pilot test was conducted on a household drinking water purifier. A 72-h stagnation test and a 60-min anti-bacterial test with electrolysis were subsequently done. There were some findings in this study: (1) The level of HPC exceeded the hygienic standard when the stagnation time was more than 3 h. (2) The lag phase of bacterial growth was no more than 12 h in filters. (3) With the method of electrolysis, microbial contamination induced by water stagnation can be controlled in the acceptable range, which was more efficient than the method of flushing with tap water.
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Zhang, J., N. Sinha, M. Ross i A. E. Tejada-Martínez. "Computational fluid dynamics analysis of the hydraulic (filtration) efficiency of a residential swimming pool". Journal of Water and Health 16, nr 5 (26.06.2018): 750–61. http://dx.doi.org/10.2166/wh.2018.110.

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Abstract Hydraulic or filtration efficiency of residential swimming pools, quantified in terms of residence time characteristics, is critical to disinfection and thus important to public health. In this study, a three-dimensional computational fluid dynamics model together with Eulerian and Lagrangian-based techniques are used for investigating the residence time characteristics of a passive tracer and particles in the water, representative of chemicals and pathogens, respectively. The flow pattern in the pool is found to be characterized by dead zone regions where water constituents may be retained for extended periods of times, thereby potentially decreasing the pool hydraulic efficiency. Two return-jet configurations are studied in order to understand the effect of return-jet location and intensity on the hydraulic efficiency of the pool. A two-jet configuration is found to perform on par with a three-jet configuration in removing dissolved constituents but the former is more efficient than the latter in removing or flushing particles. The latter result suggests that return-jet location and associated flow circulation pattern have an important impact on hydraulic efficiency. Thus return-jet configuration should be incorporated as a key parameter in the design of swimming pools complementing current design standards.
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Rozprawy doktorskie na temat "Residence time and flushing"

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Morillo, Sebastian. "Engineering solutions to water quality problems in lakes". University of Western Australia. Centre for Water Research, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0153.

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Lake restoration and management strategies focus on reducing the negative impacts of enriched or polluted inflows. These strategies become of paramount importance when lakes are used for recreational and/or drinking water purposes. Long term control of eutrophication and turbidity problems associated with large inflow loads is usually oriented to catchment management. Although it has been suggested that this is the correct long term approach, public concerns usually require a short term solution. In addition, due to political and economic costs related to changes in catchment management, in-lake restoration technologies have been emerging as a viable pretreatment option, complementary to water treatment plants, both reducing the operational costs of the water treatment plant and ameliorating the water residing in the lakes. This research investigates the effects of two in-lake technologies on the dynamics of inflowing rivers, where basin shape plays a significant role. The three lakes in this study suffer from eutrophication combined with a distinctive water quality problem: from turbidity in Silvan Reservoir (Australia), to heavy metal loads in Coeur d'Alene Lake (USA) and industrial wastes in Lake Como (Italy). Firstly, the influence of basin morphology, wind speed, and wind direction on the fate and transport of two rivers flowing into the L-shaped Coeur d'Alene Lake was examined, and it was shown that transport and mixing patterns in a lake can be greatly influenced by the shape of the lake, leading to important consequences for the plankton ecology in the lake. Secondly, in Silvan Reservoir we investigated the potential to modify the basin shape using vertical barriers, increasing the retention time and hence the barrier capacity to microbial pollution. A final in-lake technology was tested for Lake Como, using a downward pointing impeller to remove polluted water from the coastal margin. Lessons from these three examples indicate that there is significant potential for in-lake remediation at relatively low cost, over relatively short timescales.
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Harris, A. T. "Residence time distributions in circulating fluidised beds". Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603761.

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The major focus of the work is on the measurement and simulation of the particle residence time distribution in the square cross section riser of a laboratory scale, cold model, circulating fluidised bed. To this end, a novel measurement technique was developed using phosphorescent tracer particles and a light based tracer injection and detection system. Experimental results confirm that the RTD is sensitive to changes in superficial gas velocity, external solids flux and the geometry of the riser exit. Simulations made using a novel stochastic particle RTD model are in good agreement with the experimental results. The measurements of the particle RTD, separately confirm the findings of a study of the riser exit using local pressure measurements, that demonstrate the influence of the riser exit on the solids flow pattern can be significant. A series of dimensionless correlations were developed to predict this influence. The effect of the exit has been shown to be dependent upon only one dimensionless group, the riser exit Froude number, FrR. A dimensionless correlation was also developed for predicting the thickness of the annular film present at the wall of CFB risers operating in the fast fluidisation regime. This correlation is superior to those published in the literature. A further series of correlations were developed to predict the size, shape, decent velocity, solids concentration and wall coverage of the particle clusters that are a characteristic feature of the gas-solid suspension in a CFB riser.
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Munkebye, Knut-Arne Rademacher. "Residence time distribtion: Konduktivitetsmålinger på eksperimentell tubulær blandetank reaktor". Thesis, Norges Teknisk-Naturvitenskaplige Universitet, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-21119.

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Denne oppgaven har gått ut på å bygge en forsøksrigg til bruk på felleslab, ved Institutt for kjemisk prosessteknologi ved NTNU.Det skulle kjøres forsøk på oppholdstidsdistribusjoner/Residence time distributions. Alt av nødvendig utstyr er anskaffet, og satt sammen. Instrumentene er programmert il å brukes via en PC. Utstyret fungerer som det er ment å fungere, med noen justeringer. Det er gjort enkle lab forsøk, med bruk av metoden.
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Murphy, Terry 1955. "Residence time distribution of solid particles in a CSTR". Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=79251.

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When mixing in a tank is insufficient solid particles are known to form a concentration gradient along the height. The one-dimensional sedimentation dispersion model provides a relationship between mixing parameters and the solids concentration gradient. An investigation of the relationship between the solid mixing properties and the solids residence time distribution, as derived from the sedimentation dispersion model has been conducted. Experimental results show that the solids residence time distribution was a function of particle size and differed from that for the liquid phase. An empirical correlation for the solids Peclet number to predict the residence time distribution of the particles is proposed. A single parameter model to predict the solids residence time distribution as a function of particle size is presented. The influence of the particle concentration gradient on the mean conversion obtained in the reactor for two different cases is examined.
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Nadeau, Patrice. "Measurement of residence time distribution by laser absorption spectroscopy". Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22666.

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The residence time distribution was measured at ambient temperature and pressure in a tubular reactor with radial injection at very short space times (0.04-0.7 s). A technique using infrared laser absorption spectroscopy was developed and used to provide the required rapid response for concentration measurements. The equipment comprised an infrared He-Ne laser emitting at a wavelength of 3.39$ mu m$ and a lead selenide detector. Methane, which absorbs strongly at the laser wavelength, was used as the tracer. The absorption of the laser light was related to the tracer concentration by Beer-Lambert law. The laser beam passed through the diameter of the reactor at different axial locations. The residence time distributions were obtained from the response to quasi-step inputs. An axial dispersion model was used to describe the reactor.
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Matthews, Samuel Aaron 1962. "High pressure biomass liquefaction in a short-residence time autoclave". Thesis, The University of Arizona, 1990. http://hdl.handle.net/10150/277800.

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The University of Arizona has developed an advanced extruder-feeder biomass liquefaction reactor system. This 11-year project successfully provided an alternative energy process for converting biomass to a crude oil, which can be hydrotreated and ultimately processed into liquid transportation fuels. In order to provide support studies for this process, a short-residence time autoclave capable of providing very brief heat-up and quenching periods in comparison to the time at reaction temperature has been designed and operated. Wood liquefaction in the presence of carbon monoxide, water, and sodium carbonate catalyst has been conducted at residence times of 1.75-60 minutes at temperatures of 340-400°C. Results indicate that the primary thermal decomposition reactions reach completion in less than 1.75 minutes. As a consequence, this research concentrated mostly on the effects of secondary reactions, and even shorter residence times are required to study the primary reactions.
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Ball, Jason. "Investigating the importance of residence time in controlling catchment hydrochemistry". Thesis, University of Sheffield, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286915.

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Dauben, Verena. "Phytoplankton induced changes of air bubble residence time in seawater". Thesis, University of Southampton, 2005. https://eprints.soton.ac.uk/41356/.

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Air bubbles in the ocean, naturally induced by breaking waves or artificially entrained by ships, remain in the water for different periods of time. Knowledge of the factors accounting for the differences in air bubble residence time (BRT) is essential for understanding processes of air sea-gas exchange as well as for the detection of underwater ship wakes in defence applications. Reasons for the differences in BRT have been found mainly with respect to physical and chemical properties of seawater, such as temperature, salinity and gas saturation level. The impact of biological factors on the behaviour of air bubbles in seawater has not previously been investigated. It is hypothesised that phytoplankton influence BRT through the production of dissolved organic material (DOM) and oxygen. Laboratory experiments were carried out in a seawater mesocosm tank system to investigate the influence of phytoplankton growth on the BRT of artificially injected air bubbles of a wide size range (10-1000 µm diameter) using both natural phytoplankton populations from Kiel Firth and phytoplankton monocultures. BRT was determined acoustically and several phytoplankton growth-related parameters (chlorophyll concentration, dissolved inorganic nutrients, dissolved organic carbon (DOC), oxygen saturation, bacteria numbers) as well as physico-chemical parameters (surface tension and viscosity) were monitored. BRT showed statistically significant covariation with oxygen saturation and chlorophyll a concentration during phytoplankton growth periods in the tank. Increases in BRT of a factor of > 2 were found during the chlorophyll maxima, provided that the water was sufficiently supersaturated with oxygen (~>110%). When the seawater was undersaturated with oxygen, BRT changed only marginally regardless of the chlorophyll a concentration. No clear relationship was evident between BRT and measurements of DOC, surface tension and viscosity. Investigations of the influence of dissolved oxygen on BRT through variation of oxygen saturation of deionised water showed that oxygen saturation alone has no apparent effect on BRT. The influence of phytoplankton on the rheological properties of an air/water interface was investigated in small scale experiments using different phytoplankton monocultures. An increase in surface shear viscosity was detected for only one of the four species of microalgae tested, Nitzschia closterium. Dependency of BRT on the combination of oxygen supersaturation and other phytoplankton growth-related parameters are discussed.
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Hopley, Alexandra. "Liquid Residence Time Distribution in Micro-reactors with Complex Geometries". Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/37111.

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Micro-reactors, enabling continuous processes at small scales, have been of growing interest due to their advantage over batch. These advantages include better scaling, as well as improved mass and heat transfer, though many new challenges arise due to the small scales involved such as non-negligible entrance effects and significant pressure drops. The flow in coils, rectangular channel serpentine plates, mix-and-reside plates, and complex liquid-liquid mixing plates was investigated and characterized using residence time distribution (RTD) tests. A pulse test was used to determine the RTD curve shape of these reactors at flowrates ranging from 20 to 100 g/min. A semi-empirical, multi-parameter model was used to describe the asymmetrical curves, while the axial dispersion model was used to describe the symmetrical ones. The Peclet number is given in function of the Reynolds number for the liquid-liquid plates that were found to be near-plug flow (Pe > 100). In a continuous mixing plate, the Pe ranged from 190 to 475 with Pe increasing as Re increased. The effect of straight channel sections in micro-reactors is also evaluated. Longer straight segments between micromixers resulted in the development of unidirectional flow and the occurrence of tailing in the RTD. Finally, the suitability of a liquid-liquid plate for a reactive liquid-solid system is evaluated. The plugging is determined visually and by measuring pressure increase; pressure started to increase after 5 minutes and the experiment had to be halted after 10 minutes due to plugging. Parallels between the particle size distribution and the residence time distribution curves are drawn. The particle size distribution of silver chloride at low flow rates is much wider than at high flowrates. The average particle size at high flowrates was also much lower (≈69nm) than at low flowrates (≈112nm).
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He, Youzhang. "Residence time distributions of liquids and particulates in a holding tube". Thesis, University of Reading, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308106.

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Książki na temat "Residence time and flushing"

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Starn, J. Jeffrey. Simulations of ground-water flow and residence time near Woodbury, Connecticut. Reston, Va: U.S. Geological Survey, 2007.

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Köhne-Lindenlaub, Renate. The Villa Hügel: An entrepreneur's residence in the course of time. München: Deutscher Kunstverlag, 2003.

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Barbett, Samuel. Residence and migration of first-time freshmen enrolled in degree-granting institutions, fall 1996. Washington, DC: U.S. Dept. of Education, Office of Educational Research and Improvement, 1998.

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Barbett, Samuel. Residence and migration of first-time freshmen enrolled in higher education institutions: Fall 1994. [Washington, DC]: U.S. Dept. of Education, Office of Educational Research and Improvement, Educational Resources Information Center, 1996.

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Barbett, Samuel. Residence and migration of first-time freshmen enrolled in degree-granting institutions, fall 1996. Washington, DC (555 New Jersey Ave., NW, Washington 20208-5574): U.S. Dept. of Education, Office of Educational Research and Improvement, National Center for Education Statistics, 1998.

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Phillips, Scott W. Discharge, nitrate load, and residence time of ground water in the Chesapeake Bay watershed. [Baltimore, Md.]: U.S. Department of the Interior, U.S. Geological Survey, 1999.

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United States. Office of Educational Research and Improvement. i National Center for Education Statistics., red. Residence and migration of first-time freshmen enrolled in higher education institutions: Fall 1992. Washington, D.C: U.S. Dept. of Education, Office of Educational Research and Improvement, 1995.

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Baris, Mitchell A. Children of divorce: A developmental approach to residence and visitation. DeKalb, IL: Psytec Corp., 1988.

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Peck, William. Independence takes time: A youth residence guide for program, government, and community leaders about runaway and homeless youth. New York, N.Y. (503 West 27th St., New York 10001): [Independence House, 1987.

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Cox, Stephen E. Estimates of residence time and related variations in quality of ground water beneath Submarine Base Bangor and vicinity, Kitsap County, Washington. Tacoma, Wash. (1201 Pacific Ave., Suite 600, Tacoma 98402): U.S. Dept. of the Interior, U.S. Geological Survey, 2003.

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Części książek na temat "Residence time and flushing"

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Dettmann, Edward H. "Flushing Time". W Encyclopedia of Estuaries, 329–30. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-8801-4_19.

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Lucas, Lisa V. "Residence Time". W Encyclopedia of Estuaries, 502–3. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-8801-4_198.

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Stieglitz, Thomas, i Peter Ridd. "Residence Time". W Encyclopedia of Modern Coral Reefs, 931. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-90-481-2639-2_247.

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Yoshida, Jun-ichi. "Controlling Residence Time". W SpringerBriefs in Molecular Science, 9–19. Tokyo: Springer Japan, 2015. http://dx.doi.org/10.1007/978-4-431-55513-1_2.

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Copeland, Robert A. "Drug-Target Residence Time". W Thermodynamics and Kinetics of Drug Binding, 155–67. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2015. http://dx.doi.org/10.1002/9783527673025.ch8.

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Reed, G. "Measurement of residence times and residence-time distributions". W Radioisotope Techniques for Problem-Solving in Industrial Process Plants, 112–37. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4073-4_9.

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Johnson, Martin D., Scott A. May, Jennifer Mc Clary Groh, Luke P. Webster, Vaidyaraman Shankarraman, Richard D. Spencer, Carla Vanesa Luciani, Christopher S. Polster i Timothy Braden. "Understanding Residence Time, Residence Time Distribution, and Impact of Surge Vessels". W Continuous Pharmaceutical Processing, 51–85. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-41524-2_3.

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Thomas-Vaslin, Véronique, Adrien Six, Bertrand Bellier i David Klatzmann. "Life Span, Turnover, Residence Time". W Encyclopedia of Systems Biology, 1125–26. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4419-9863-7_712.

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Mory, Mathieu. "Hydrodynamics and Residence Time Distribution - Stirring". W Fluid Mechanics for Chemical Engineering, 171–92. Hoboken, NJ USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118617175.ch9.

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Paugh, Jerry R., Ronald C. Chatelier i Joseph W. Huff. "Ocular Residence Time of Carboxymethylcellulose Solutions". W Lacrimal Gland, Tear Film, and Dry Eye Syndromes 2, 761–67. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5359-5_107.

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Streszczenia konferencji na temat "Residence time and flushing"

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Gammaitoni, L., F. Marchesoni, E. Menichella Saetta i S. Santucci. "Stochastic resonance: A residence time approach". W Chaotic, fractal, and nonlinear signal processing. AIP, 1996. http://dx.doi.org/10.1063/1.51018.

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Peric, S., B. D. Basic, J. Gracan i A. Jazbec. "Applying survival analysis for estimating and comparing flushing time variability". W Proceedings 23rd International Conference Information Technology Interfaces. ITI 2001. IEEE, 2001. http://dx.doi.org/10.1109/iti.2001.938030.

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Zhang, Xueqing, i Pengcheng Wang. "Numerical Study of Residence Time in Daliaohe Estuary". W 2012 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring (CDCIEM). IEEE, 2012. http://dx.doi.org/10.1109/cdciem.2012.113.

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Li, Genong, Aniruddha Mukhopadhyay, Chi-Yang Cheng i Yi Dai. "Various Approaches to Compute Fluid Residence Time in Mixing Systems". W ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-30771.

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Residence time including mean residence time and residence time distribution (RTD) is a very important parameter to characterize a mixing system. In practice, tracer study has been widely used in experiments to obtain residence time distribution. There are several numerical approaches available to compute the average residence time and the residence time distribution of a system. This paper attempts to summarize those available approaches through an example.
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Griffioen, M. L., i S. Natha. "Improving a Greywater Reuse Unit for the Purpose of Toilet Flushing in a Student Residence at the University of Johannesburg, South Africa". W World Environmental and Water Resources Congress 2013. Reston, VA: American Society of Civil Engineers, 2013. http://dx.doi.org/10.1061/9780784412947.305.

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Haimes, Robert. "Using residence time for the extraction of recirculation regions". W 14th Computational Fluid Dynamics Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1999. http://dx.doi.org/10.2514/6.1999-3291.

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Lu, Hao, Defu Cheng i Lanxia Zhao. "The research on the residence time difference fluxgate model". W 2011 International Conference on Electronics, Communications and Control. IEEE, 2011. http://dx.doi.org/10.1109/icecc.2011.6066329.

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Spencer, Adrian, i Liangta Cheng. "Combustor Residence Time Measurement Using Planar Laser Induced Florescence". W ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22573.

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Combustor performance parameters are strongly affected by the residence time of the combustion chamber. Both the time mean velocity and the turbulence fields are important to the residence time of the gases within it. However, determining the residence time via analysis of a measured velocity field is difficult, particularly due to the inherent unsteadiness and three dimensional nature of the flow within a combustor. A more direct approach is to use a passive transported scalar and look at the dynamic response of the scalar concentration to a step change in the injection rate of it. This may be done with a high spatial and temporal resolution using modern high frame rate digital cameras. A time resolved planar laser induced florescence (PLIF) technique is described that has been used to characterize the residence time within a combustion chamber. Characteristic times evaluated from the measurements are the convection (or delay time) from the point of injection and scalar decay rate (or half life) due to turbulent mixing once the effect of the reduced scalar concentration injection has been transported to the point of interest, other measures are possible but these are the most relevant to flow fields with significant recirculation. The technique is described for a single phase isothermal aerodynamic flow field, but with further consideration the technique could be extended to reacting combustors. Not only does the data provide a useful insight to the mixing phenomena and relevant time scales, it also provides suitable validation data for time dependent CFD predictions in which it is easy to solve for a conserved scalar.
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Ghosh, Ushasi, Pranay Agarwal i Abhinav Kumar. "Modeling MME Residence Time in LTE based Cellular Networks". W 2018 Twenty Fourth National Conference on Communications (NCC). IEEE, 2018. http://dx.doi.org/10.1109/ncc.2018.8600089.

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Jaume Puig-Bargués i Freddie R. Lamm. "Effect of flushing velocity and elapsed time on sediment transport in driplines". W 2013 Kansas City, Missouri, July 21 - July 24, 2013. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2013. http://dx.doi.org/10.13031/aim.20131594671.

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Raporty organizacyjne na temat "Residence time and flushing"

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Mirsky, G., S. Ruffini, E. Gray, J. Drake, S. Bryant i A. Vainshtein. Residence Time Measurement in MPLS Networks. RFC Editor, maj 2017. http://dx.doi.org/10.17487/rfc8169.

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Lee, L. Residence time distributions for ETF pH adjustment system. Office of Scientific and Technical Information (OSTI), marzec 1989. http://dx.doi.org/10.2172/6238756.

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Otermat, J. E., W. O. Wikoff i J. L. Kovach. Residence time determination for adsorbent beds of different configurations. Office of Scientific and Technical Information (OSTI), luty 1995. http://dx.doi.org/10.2172/95661.

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Jones, M., i R. Perkins. Residence time distribution approach to the study of free convection in porous media. Office of Scientific and Technical Information (OSTI), czerwiec 1988. http://dx.doi.org/10.2172/5251292.

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Nash, C. A. Evaluating Residence Time for SuperLig(R) 644 Columns with Simulated LAW Envelope B Solution. Office of Scientific and Technical Information (OSTI), lipiec 2003. http://dx.doi.org/10.2172/812407.

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Powell, A., U. Pal i J. van den Avyle. Optimal beam pattern to maximize inclusion residence time in an electron beam melting hearth. Office of Scientific and Technical Information (OSTI), luty 1997. http://dx.doi.org/10.2172/432999.

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Nash, C. A. Evaluating Residence Time for SuperLig(R) 644 Columns with Simulated LAW Envelope C (AN-107) Solution. Office of Scientific and Technical Information (OSTI), sierpień 2003. http://dx.doi.org/10.2172/813559.

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Siekhaus, W. J. Surface Adsorption with Infinite, or Finite, Residence Time, and the Resultant Pressure Decrease in a Reaction Chamber. Office of Scientific and Technical Information (OSTI), styczeń 2019. http://dx.doi.org/10.2172/1491965.

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Bitew, Menberu, i Rhett Jackson. Characterization of Flow Paths, Residence Time and Media Chemistry in Complex Landscapes to Integrate Surface, Groundwater and Stream Processes and Inform Models of Hydrologic and Water Quality Response to Land Use Activities; Savannah River Site. Office of Scientific and Technical Information (OSTI), luty 2015. http://dx.doi.org/10.2172/1171150.

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Sultana, Munawar. Culture of silence: A brief on reproductive health of adolescents and youth in Pakistan. Population Council, 2005. http://dx.doi.org/10.31899/pgy19.1006.

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Previous research on the reproductive health of adolescents and youth in Pakistan has not addressed the diversity of adolescent experiences based on social status, residence, and gender. To understand the transition from adolescence to adulthood more fully, it is important to assess social, economic, and cultural aspects of that transition. This brief presents the experience of married and unmarried young people (males and females) from different social strata and residence regarding their own attitudes and expectations about reproductive health. More young people aged 15–24 live in Pakistan now than at any other time in its history—an estimated 36 million in 2004. Recognizing the dearth of information on this large group of young people, the Population Council undertook a nationally representative survey from October 2001 to March 2002. The analysis presented here comes from Adolescents and Youth in Pakistan 2001–02: A Nationally Representative Survey. The survey sought information from youth aged 15–24, responsible adults in the household, and other community members in 254 communities. A total of 6,585 households were visited and 8,074 young people were interviewed.
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