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Academic literature on the topic 'Infiltration'

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Published: 4 June 2021
Last updated: 25 May 2024

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Journal articles on the topic "Infiltration"

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Khanaum, Mosammat Mustari, and Md Saidul Borhan. "Influence of Soil Layers on the Infiltration Rates and Cumulative Infiltration Using Modified Green Ampt Model in the HYDROL-INF Simulation Environment." International Journal of Agriculture System 10, no. 2 (December 17, 2022): 72. http://dx.doi.org/10.20956/ijas.v10i2.3818.

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Soil profiles are generally heterogeneous and consist of various horizontal layers due to geological processes, the formation of crusts, or other artificial or man-made activities. To quantify infiltration into these heterogeneous soil profiles, the Modified Green-Ampt Model (MGAM) is a physically-based hydrologic model that can efficiently perform under both steady and unsteady rainfall events. Based on the secondary data, this study sought to determine the effect of changing soil layers (soil textures) on infiltration rates and cumulative infiltrations in in both laboratory and field settings. Different scenarios were analyzed by rearranging soil layers and evaluating their impacts on corresponding infiltration rates and cumulative infiltrations. Simulations were run with HYDROL-INF software environment using MGAM. Three scenarios were considered for a laboratory experiment with two different types of soil texture coupled with five different soil profiles. Similarly, four scenarios were considered for the field experiments with five different types of soil texture couple with eight different soil profiles. The simulated infiltration rates and cumulative infiltrations were found to vary with soil layer change scenarios. The simulated cumulative infiltrations, ponding times, infiltrating rates at ponding, and total depth of wetting front at ponding of a five-layered laboratory soil column were identical for the three scenarios. Simulated cumulative infiltrations were 33.16, 23.65, 21.29, and 42.77 cm, respectively, for scenarios (combinations) 1, 2, 3, and 4 in the eight-layered soil profile in the field scenarios. Infiltration rates among scenarios at ponding were identical (0.46 to 0.53 cm/h) with field scenario data.
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Li, Ning, Yuxiang Tian, Biao Ma, and Dongxia Hu. "Experimental Investigation of Water-Retaining and Mechanical Behaviors of Unbound Granular Materials under Infiltration." Sustainability 14, no. 3 (January 20, 2022): 1174. http://dx.doi.org/10.3390/su14031174.

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Unbound granular materials (UGM) in permeable pavement will experience large numbers of infiltration during their service-life. The frequently changed moisture not only affects the cooling effect of permeable pavement, but also influences the mechanical behaviors of UGM. However, evidence is lacking to state the influence of infiltration on the behaviors of UGM, which is commonly in fully permeable pavement. Considering the influence of infiltration, this study conducted experimental tests to investigate the effect on the water-retaining and bearing capacity of UGM. With the water-retaining tests, the water-retaining rate in the whole structure and at different depths was analyzed under different infiltration numbers and duration. The results showed that the water-retaining rate increased with the extension of the infiltration duration. The infiltration duration had a significant influence on the water-retaining capacity of UGM, while the infiltration number had little. The difference in the water-retaining rate between the top and bottom layers was up to 2.56%. The water-retaining capacity of the integrated structure was hardly affected due to the dissimilarity of the water-retaining rate at different depths. With infiltrations, the fine aggregate in the upside structure migrated downward to the lower structure, resulting in a reduction in water-retaining rate in the upper structure and an increase at the bottom. In addition, the mechanical behaviors were evaluated by the traditional California Bearing Ratio (CBR) and repeated CBR tests under five infiltrations. The first and second infiltration had a significant influence on the CBR of UGM. With two infiltrations, the plastic strain increased by 57.8% via the repeated CBR tests. The resilient strain had an increase by 36.52% and the equivalent modulus decreased by 28.7% with the first infiltration. The first infiltration presented a critical influence on the bearing capacity of UGM and the effect decreased with the increase in the infiltration number. These findings will enrich the behaviors investigation of UGM and promote its application in the fully permeable pavement.
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Seyboldt, Christoph, Mathias Liewald, and Daniel Heydt. "Production of Aluminium Based Interpenetrating Phase Composites Using Semi-Solid Forming." Key Engineering Materials 716 (October 2016): 502–9. http://dx.doi.org/10.4028/www.scientific.net/kem.716.502.

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The following paper deals with the production of Interpenetrating Phase Composites (IPC) using semi-solid forming technology. Therefore, adequate ceramic foams were selected and infiltrated by processing the aluminium alloy A356 in the semi-solid state. In the studies presented in this paper, the infiltrations of two ceramic materials (Al2O3 and SiC) with three different pore sizes (10, 20 and 30 ppi) were investigated. During the forming process the liquid phase fraction of the aluminium was varied to analyze infiltration effects in relation to the raw material´s liquid phase fraction. Afterwards, microsections of the produced specimens were analyzed in order to characterize their microstructure and the quality of infiltration. The results showed that completely filled composite components with good mechanical properties can be produced by infiltrating ceramic preforms with a semi-solid aluminium alloy.
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Lilbæk, G., and J. W. Pomeroy. "Evidence for enhanced infiltration of ion load during snowmelt." Hydrology and Earth System Sciences Discussions 7, no. 1 (February 24, 2010): 1431–57. http://dx.doi.org/10.5194/hessd-7-1431-2010.

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Abstract. Meltwater ion concentration and infiltration rate into frozen soil both decline rapidly as snowmelt progresses. Their temporal association is highly non-linear and a covariance term must be added in order to use time-averaged values of snowmelt ion concentration and infiltration rate to calculate chemical infiltration. The covariance is labelled enhanced infiltration and represents the additional ion load that infiltrates due to the timing of high meltwater concentration and infiltration rate. Previous assessment of the impact of enhanced infiltration has been theoretical; thus, experiments were carried out to examine whether enhanced infiltration can be recognized in controlled laboratory settings and to what extent its magnitude varies with soil moisture. Three experiments were carried out: dry soil conditions, unsaturated soil conditions, and saturated soil conditions. Chloride solution was added to the surface of frozen soil columns; the concentration decreased exponentially over time to simulate snow meltwater. Infiltration excess water was collected and its chloride concentration and volume determined. Ion load infiltrating the frozen soil was specified by mass conservation. Results showed that infiltrating ion load increased with decreasing soil moisture as expected; however, the impact of enhanced infiltration increased considerably with increasing soil moisture. Enhanced infiltration caused 2.5 times more ion load to infiltrate during saturated conditions than that estimated using time-averaged ion concentrations and infiltration rates alone. For unsaturated conditions, enhanced infiltration was reduced to 1.45 and for dry soils to 1.3. Reduction in infiltration excess ion load due to enhanced infiltration increased slightly (2–5%) over time, being greatest for the dry soil (45%) and least for the saturated soil (6%). The importance of timing between high ion concentrations and high infiltration rates was best illustrated in the unsaturated experiment, which showed large inter-column variation in enhanced ion infiltration due to variation in this temporal covariance.
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Lilbæk, G., and J. W. Pomeroy. "Laboratory evidence for enhanced infiltration of ion load during snowmelt." Hydrology and Earth System Sciences 14, no. 7 (July 29, 2010): 1365–74. http://dx.doi.org/10.5194/hess-14-1365-2010.

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Abstract. Meltwater ion concentration and infiltration rate into frozen soil both decline rapidly as snowmelt progresses. Their temporal association is highly non-linear and a covariance term must be added in order to use time-averaged values of snowmelt ion concentration and infiltration rate to calculate chemical infiltration. The covariance is labelled enhanced ion infiltration and represents the additional ion load that infiltrates due to the timing of high meltwater concentration and infiltration rate. Previous assessment of the impact of enhanced ion infiltration has been theoretical; thus, experiments were carried out to examine whether enhanced infiltration can be recognized in controlled laboratory settings and to what extent its magnitude varies with soil moisture. Three experiments were carried out: dry soil conditions, unsaturated soil conditions, and saturated soil conditions. Chloride solutions were added to the surface of frozen soil columns; the concentration decreased exponentially over time to simulate snow meltwater. Infiltration excess water was collected and its chloride concentration and volume determined. Ion load infiltrating the frozen soil was specified by mass conservation. Results showed that infiltrating ion load increased with decreasing soil moisture as expected; however, the impact of enhanced ion infiltration increased considerably with increasing soil moisture. Enhanced infiltration caused 2.5 times more ion load to infiltrate during saturated conditions than that estimated using time-averaged ion concentrations and infiltration rates alone. For unsaturated conditions, enhanced ion infiltration was reduced to 1.45 and for dry soils to 1.3. Reduction in infiltration excess ion load due to enhanced infiltration increased slightly (2–5%) over time, being greatest for the dry soil (45%) and least for the saturated soil (6%). The importance of timing between high ion concentrations and high infiltration rates was best illustrated in the unsaturated experiment, which showed large inter-column variation in enhanced ion infiltration due to variation in this temporal covariance.
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Bi, Qing, Yang Liu, Tao Yuan, Huizhen Wang, Bin Li, Ye Jiang, Xingkui Mo, et al. "Predicted CD4+ T cell infiltration levels could indicate better overall survival in sarcoma patients." Journal of International Medical Research 49, no. 1 (January 2021): 030006052098153. http://dx.doi.org/10.1177/0300060520981539.

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Objective The role of tumor-infiltrating lymphocytes (TILs) has not yet been characterized in sarcomas. The aim of this bioinformatics study was to explore the effect of TILs on sarcoma survival and genome alterations. Methods Whole-exome sequencing, transcriptome sequencing, and survival data of sarcoma were obtained from The Cancer Genome Atlas. Immune infiltration scores were calculated using the Tumor Immune Estimation Resource. Potential associations between abundance of infiltrating TILs and survival or genome alterations were examined. Results Levels of CD4+ T cell infiltration were associated with overall survival of patients with pan-sarcomas, and higher CD4+ T cell infiltration levels were associated with better survival. Somatic copy number alterations, rather than mutations, were found to correlate with CD4+ T cell infiltration levels. Conclusions This data mining study indicated that CD4+ T cell infiltration levels predicted from RNA sequencing could predict sarcoma prognosis, and higher levels of CD4+ T cells infiltration indicated a better chance of survival.
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Xiong, Ying, Zewei Wang, Quan Zhou, Han Zeng, Hongyu Zhang, Zhaopei Liu, Qiuren Huang, et al. "Identification and validation of dichotomous immune subtypes based on intratumoral immune cells infiltration in clear cell renal cell carcinoma patients." Journal for ImmunoTherapy of Cancer 8, no. 1 (March 2020): e000447. http://dx.doi.org/10.1136/jitc-2019-000447.

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BackgroundIncreasing evidence has elucidated the clinical significance of tumor infiltrating immune cells in predicting outcomes and therapeutic efficacy. In this study, we comprehensively analyze the tumor microenvironment (TME) immune cell infiltrations in clear cell renal cell carcinoma (ccRCC) and correlated the infiltration patterns with anti-tumor immunity and clinical outcomes.MethodsWe analyzed immune cell infiltrations in four independent cohorts, including the KIRC cohort of 533 patients, the Zhongshan ccRCC cohorts of 259 patients, the Zhongshan fresh tumor sample cohorts of 20 patients and the Zhongshan metastatic ccRCC cohorts of 87 patients. Intrinsic patterns of immune cell infiltrations were evaluated for associations with clinicopathological characteristics, underlying biological pathways, genetic changes, oncological outcomes and treatment responses.ResultsUnsupervised clustering of tumor infiltrating immune cells identified two microenvironment subtypes, TMEcluster-A and TMEcluster-B. Gene markers and biological pathways referring to immune evasion were upregulated in TMEcluster-B. TMEcluster-B associated with poor overall survival (p<0.001; HR 2.629) and recurrence free survival (p=0.012; HR 1.870) in ccRCC validation cohort. TMEcluster-B cases had worse treatment response (p=0.009), overall survival (p<0.001; HR 2.223) and progression free survival (p=0.015; HR 2.7762) in metastatic ccRCC cohort. The predictive accuracy of International Metastatic Database Consortium risk score was improved after incorporation of TME clusters.ConclusionsTMEcluster-A featured increased mast cells infiltration, prolonged survival and better treatment response. TMEcluster-B was a heavily infiltrated but immunosuppressed phenotype enriched for macrophages, CD4+T cells, Tregs, CD8+T cells and B cells. TMEcluster-B predicted dismal survival and worse treatment response in clear cell renal cell carcinoma patients.
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Su, Li Zheng, Le Hua Qi, Ji Ming Zhou, Yu Shan Wang, and Fang Yang. "Numerical Simulation of Heat and Mass Transfer of the Infiltration in Liquid Infiltration Extrusion Process." Materials Science Forum 532-533 (December 2006): 953–56. http://dx.doi.org/10.4028/www.scientific.net/msf.532-533.953.

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The pressure infiltration process of porous preforms by molten metals was investigated numerically in this paper. The finite element model of heat and mass transfer of the infiltration in liquid infiltration extrusion process was founded by the introduction of a new continuum model of fluid in porous medium and a distribution resistance concept. The proposed model can describe the transient flow behavior of semisolid materials qualitatively. Numerical simulations were developed in particular for non-isothermal infiltrations which take into account the thermal aspects (the mould, the fibres and the metal are initially preheated at different temperatures). The temperature distribution, infiltration front and infiltration depth in the infiltration area were gained by the simulation of ANSYS／FLOTRAN code. It is shown that the fiber volume fraction and initial temperature have a strong effect on the infiltration process. The simulation results of axisymmetric infiltration have a good agreement with their experimental ones. In addition, the infiltration time was predicted to get the effective infiltration depth based on the simulation results.
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ROSENTHAL, KELLI. "Infiltration." Nursing Made Incredibly Easy! 1, no. 2 (November 2003): 60–62. http://dx.doi.org/10.1097/00152258-200311000-00010.

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PURCELL, ROSAMOND, and STEPHEN JAY GOULD. "Infiltration." Sciences 39, no. 4 (July 8, 1999): 32–33. http://dx.doi.org/10.1002/j.2326-1951.1999.tb03701.x.

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Dissertations / Theses on the topic "Infiltration"

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Persson, Andreas. "Infiltration of Waldheim." Thesis, Blekinge Tekniska Högskola, Sektionen för teknokultur, humaniora och samhällsbyggnad, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-1458.

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"Infiltration of Waldheim" är ett spel gjort av David Lindell (grafik), Andreas Persson (programmering) och Mathias Jönsson (ljud och musik). Målet vi hade med projektet var att ha en spelbar bana med minst en vapen typ samt fiender att eliminera, allt ackompanjerat med pampig musik och en massa ljudeffekter. Jag kommer i denna rapport beskriva arbetets gång samt reflektera över vad som har fungerat och vad som varit mindre bra under projektets gång. Mina planer för spelet var mest att lära mig mera om framförallt AI samt arbeta mera i 3d. Spelet ska mest vara för mig själv, men med lite putsning och mera innehåll eventuellt användas vid jobb ansökningar i framtiden.
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Auger, John Michael. "Discrete games of infiltration." Thesis, University of Southampton, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314935.

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Bancole, Apolline. "L'oxydation en infiltration percolation." Montpellier 2, 2001. http://www.theses.fr/2001MON20072.

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Nilsson, Peter. "Infiltration of wastewater : an applied study on treatment of wastewater by soil infiltration /." Lund, Sweden : Dept. of Environmental Engineering, Lund Institute of Technology, University of Lund, 1990. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=006106905&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Zhang, Jie, and s3069216@student rmit edu au. "A laboratory scale study of infiltration from Pervious Pavements." RMIT University. Civil, Environmental and Chemical Engineering, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20070125.164003.

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Increased urbanization causes pervious greenfields to be converted to impervious areas increasing stormwater runoff. Most of the urban floods occur because existing drainage systems are unable to handle peak flows during rainfall events. During a storm event, flood runoff will carry contaminants to receiving waters such as rivers and creeks. Engineers and scientists have combined their knowledge to introduce innovative thinking to manage the quality of urban runoff and harvest stormwater for productive purposes. The introduction of pervious pavements addresses all the principles in Water Sensitive Urban Design. A pervious pavement is a load bearing pavement structure that is permeable to water. The pervious layer sits on the top of a reservoir storage layer. Pervious pavements reduce the flood peak as well as improve the quality of stormwater at source before it is transported to receiving waters or reused productively. To be accepted as a viable solution, understanding of the influence of design parameters on the infiltration rate (both from the bedding and the sub-base) as well as strength of the pavement requires to be established. The design of a particular pavement will need to be customized for different properties of sub layer materials present in different sites. In addition, the designs will have to meet local government stormwater discharge standards. The design of drainage systems underneath pervious pavements will need to be based on the permeability of the whole pervious system. The objectives of the research project are to: • Understand the factors influencing infiltration capacities and percolation rates through the pervious surface as well as the whole pavement structure including the bedding and the sub-base using a laboratory experimental setup. • Obtain relationships between rainfall intensity, infiltration rate and runoff quantity based on the sub-grade material using a computational model to assist the design of pervious pavements. A laboratory scale pavement was constructed to develop relationships between the surface runoff and the infiltration volume from a pervious pavement with an Eco-Pavement surface. 2 to 5mm crushed gravel and 5 to 20mm open graded gravel were chosen as the bedding and sub-base material. Initial tests such as dry and wet density, crushing values, hydraulic conductivity, California Bearing Ratio tests for aggregate material were conducted before designing and constructing the pavement model. A rainfall simulator with evenly spaced 24 sprays was set up above the pervious pavement surface. The thesis presents design aspects of the laboratory scale pavement and the tests carried out in designing the pavement and the experimental procedure. The Green and Ampt model parameters to calculate infiltration were obtained from the laboratory test results from aggregate properties. Runoff results obtained from rainfall simulator tests were compared with the Green and Ampt infiltration model results to demonstrate that the Green and Ampt parameters could be successfully calculated from aggregate properties. The final infiltration rate and the cumulative infiltration volume of water were independent of the rainfall intensity once the surface is saturated. The model parameters were shown to be insensitive to the final infiltration capacity and to the total amount of infiltrated water. The Green and Ampt infiltration parameters are the most important parameters in designing pervious pavements using the PCSWMMPP model. The PCSWMMPP model is a Canadian model built specially for designing pervious pavements. This is independent of the type of sub-grade (sand or clay) determining whether the water is diverted to the urban drainage system (clay sub-grade) or deep percolation into the groundwater system (sand sub-grade). The percolation parameter in Darcy's law is important only if the infiltrated water recharges the groundwater. However, this parameter is also insensitive to the final discharge through the subgrade to the groundwater. The study concludes by presenting the design characteristics influencing runoff from a pervious pavement depending on the rainfall intensity, pavement structure and sub-grade material and a step-by step actions to follow in the design.
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Barrett, Gary Edward. "Infiltration in water repellent soil." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/28618.

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Observations made at Goat Meadows - a small sub-alpine basin located near Pemberton, British Columbia -demonstrated that a layer which is either water repellent or has only a limited affinity for water is present at most vegetated sites. The layer is typically a few centimetres in thickness, and is usually located at or near the top of the profile: it was present only in the zone of accumulation of organic matter. The spatial distribution of the layer did not appear to be related to the distribution of any particular species of plant. Sampling of sub-alpine sites in the Cascade, Selkirk, and Purcell Mountains indicated that such layers are common in the alpine - sub-alpine ecotone of southern British Columbia. The relationship between ponding depth and infiltration rate was explored through experiments conducted on samples collected near Ash Lake, in Goat Meadows. These samples were chosen for analysis because the repellent layer was in excess of thirty centimetres thick at this site. Infiltration rates remained below 2x10⁻⁹ m/s for all samples, even given ponding depths of up to forty centimetres. Breakthrough of liquid water was not observed, even after one month, which implies that most of the infiltration occurred as vapour transfer. In order to observe the movement of liquid water through water repellent media, a plexiglas cell was constructed. A synthetic water repellent sand with uniform surface properties was used as the medium. It was found that up to some critical depth, there was no entry of water into the medium. As the ponding depth was increased in steps, the front would advance in steps: it remained stationary between these step-increases in ponding depth. As the front advanced, protuberances or "fingers" began to develop. At some critical ponding depth, a finger would grow without bound. These observations pose a challenge to existing models of infiltration, since it appears that heterogeneity at the scale of individual pores must be invoked to explain them, but it is usually assumed that the properties of a porous medium are continuous at this scale. The thermodynamics of filling and emptying of pores is considered with emphasis on the effects of pore shape and of variations in the physicochemical properties at the scale of the pore. This thermodynamic analysis provides the conceptual basis for development of a model of infiltration in which pore-scale heterogeneity is preserved. Although it was not developed as such, the model follows the approach of cellular automata, in which local relations between pores or "cells" govern the behaviour of the system. The model replicated the observations of infiltration into synthetic water repellent porous media well: both the halting advance of the front as the ponding depth was increased and the development of fingers were simulated. The fact that such complex behaviour was predicted using only a simple set of physically based rules confirms the power of the approach.
Arts, Faculty of
Geography, Department of
Graduate
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林紅 and Hung Lin. "Lymphocytic infiltration and nasopharyngeal carcinoma." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1990. http://hub.hku.hk/bib/B31209907.

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Sommer, Jared Lee 1960. "Infiltration of deformable porous media." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/13101.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1992.
Vita.
Includes bibliographical references (leaves 179-188).
by Jared Lee Sommer.
Ph.D.
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Fritz, Heiko. "Infiltration in teilweise gefrorene Böden." Master's thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2010. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-62293.

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In der vorliegenden Arbeit wurden Doppelringinfiltrationsexperimente an teilweise gefro­renen Böden durchgeführt. Diese Experimente wurden anschließend mit den zwei computer­ge­stützten Modellen, Erosion 3D / Winter und COUP, nachgestellt, um die Frage zu beantworten, ob es möglich ist, die Infiltration in teilweise gefrorene Böden vorherzusagen. Die Doppelringinfiltrationsexperimente wurden auf einem ackerbaulich genutzten Lehm­boden mit geringer Lagerungsdichte und Bodenfeuchten im Bereich der Feld­kapa­zität, an der nördlichen Grenze des hydrologischen Untersuchungsgebietes „Schäfertal“ durch­ge­führt. Drei Experimente erfolgten bei teilweise gefrorenen und ein Experiment bei unge­frorenem Boden. Bei diesen Experimenten wurde herausgefunden, dass die Endinfiltrationsrate des gefro­renen Bodens mit 7·10-5 m/s gleich der Endinfiltrationsrate des ungefrorenen Bodens war. Während bei dem Infiltrationsexperiment mit ungefrorenem Boden die Endinfiltrations­rate bereits nach 10 bis 20 min erreicht war, wurden bei den Experimenten mit gefrorenen Böden aufgrund der zusätzlichen Sättigung des kryoturbativen Sekundärporenvolumens mehr Zeit benötigt. Zu den im Boden ablaufenden Prozessen bei Zugabe von Infiltrationswasser (Tem­pe­ratur­veränderung, Gefrier- und Auftauprozesse, Veränderung der Porosität) besteht noch Klärungsbedarf. Der für die Modellierung wichtige Eingabeparameter der Anfangsbodenfeuchte konnte bei winterlichen Bedingungen nicht genau bestimmt werden. Gravimetrische Boden­feuchtebestimmungen liefern aufgrund des Eintrags von zusätzlichen Eis- und Schnee-Wasser zu hohe Werte. TDR- und Watermark-Messungen unterschätzen hingegen die Bodenfeuchten, weil sie nur den Anteil des flüssigen Wassers berücksichtigen. Mit Erosion 3D / Winter konnten die Ergebnisse der Infiltrationsexperimente, unter der Voraussetzung, dass die effektive gesättigte hydraulische Leitfähigkeit des ungefrorenen Bodens exakt bekannt war, sehr gut nachgestellt werden. Eine Modellierung der Infiltration in einen teilweise gefrorenen Boden ist damit, zumindest für den untersuchten Boden und die betrachteten meteorologischen Bedingungen, möglich. Das COUP - Modell lieferte dagegen völlig andere Ergebnisse, weil von einem Ein­frieren des infiltrierten Wassers bei negativen Temperaturen ausgegangen wird. Eine Verbesserung der Infiltrationsbeschreibungen könnte hier wahrscheinlich durch die Vorgabe einer größeren Anzahl von Eingabeparametern, die die natürliche Situation besser repräsentieren als die für die Modellierung verwendeten Daten, erfolgen.
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Dopler, Thomas. "Low pressure infiltration process modeling." Châtenay-Malabry, Ecole centrale de Paris, 1999. http://www.theses.fr/1999ECAP0673.

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Les composites à matrice métallique, une matrice métalliquerenforcée par des fibres ou particlues céramiques, constituent un solution élegante pour obtenir des materiaux à propriétés mécaniques, de résistance à l'usure et à la fatigue exceptionnelles. Leurs applications sonts pour le moment limitées, moins à cause de leur coût, mais plutôt à cause des problème liés à la reproductibilité et à la dispertionde leurs propriétés. Le travail présent contribue au développement d'un code de simulation capable de prédire la cinétique d'infiltration pendant l'infiltration sous pression. Pour la première fois l'écoulement non saturé et le transfert de chaleur incluant la solidification sont traités d'une façon simultanée.
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Books on the topic "Infiltration"

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Kenaz, Yehoshua. Infiltration. South Royalton, VT: Zoland Books, 2004.

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Layzell, Richard. Infiltration. Coventry: Warwick Arts Centre, Mead Gallery, 1997.

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Infiltration. Vancouver, B.C., Canada: Orca Book Publishers, 2011.

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Albert, Speer. Infiltration. New York: Ishi Press, 2010.

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Dalya, Bilu, ed. Infiltration. South Royalton, Vt: Zoland Books, 2003.

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Albert, Jean-Marie. L' infiltration. Paris: Des idées & des hommes, 2007.

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Stormwater infiltration. Boca Raton: Lewis Publishers, 1994.

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Empires: Infiltration. London: Gollancz, 2014.

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Massa, Louis R. Regions of Infiltration. Pittsburgh: Dorrance Publishing Co., 1995.

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Marchello, J. M. Polymer infiltration studies. [Norfolk, Va.]: Dept. of Civil Engineering, College of Engineering and Technology, Old Dominion University, 1992.

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Book chapters on the topic "Infiltration"

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Vieux, Baxter E. "Infiltration." In Water Science and Technology Library, 83–99. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-024-0930-7_5.

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Gargouri-Ellouze, Emna, Saeid Eslamian, Kaveh Ostad-Ali-Askari, Rim Chérif, Maroua Bouteffeha, and Fairouz Slama. "Infiltration." In Selective Neck Dissection for Oral Cancer, 1–3. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-12127-7_169-1.

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Vieux, Baxter E. "Infiltration." In Water Science and Technology Library, 95–120. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-015-9710-4_5.

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Perrier, E. R., and A. B. Salkini. "Infiltration." In Supplemental Irrigation in the Near East and North Africa, 133–44. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3766-9_9.

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Gargouri-Ellouze, Emna, Saeid Eslamian, Kaveh Ostad-Ali-Askari, Rim Chérif, Maroua Bouteffeha, and Fairouz Slama. "Infiltration." In Encyclopedia of Earth Sciences Series, 513–15. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73568-9_169.

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Chesworth, Ward, Augusto Perez‐Alberti, Emmanuelle Arnaud, H. J. Morel‐Seytoux, and H. J. Morel‐Seytoux. "Infiltration." In Encyclopedia of Soil Science, 350–62. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-3995-9_291.

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Bährle-Rapp, Marina. "Infiltration." In Springer Lexikon Kosmetik und Körperpflege, 279. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_5189.

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Iwata, Yukiyoshi. "Snowmelt Infiltration." In Encyclopedia of Agrophysics, 736. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-90-481-3585-1_140.

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Fernando Martinez, Taboada. "Infiltration Blocks." In Handbook of Small Animal Regional Anesthesia and Analgesia Techniques, 21–35. Oxford, UK: John Wiley & Sons, Ltd, 2016. http://dx.doi.org/10.1002/9781119159490.ch3.

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Bergfeld, D., B. Sommer, and G. Sattler. "Infiltration Technique." In Tumescent Local Anesthesia, 55–60. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-56744-5_9.

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Conference papers on the topic "Infiltration"

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Li, C. J., G. J. Yang, and A. Ohmori. "Improvement of the Properties of Thermally Sprayed Ceramic Coating by the Infiltration of the Adhesives." In ITSC2003, edited by Basil R. Marple and Christian Moreau. ASM International, 2003. http://dx.doi.org/10.31399/asm.cp.itsc2003p1311.

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Abstract Thermally sprayed ceramic coating consists generally of porosity up to over ten percent. The existence of voids in the coating will degrade mechanical performance and corrosion resistance. The infiltration technique has been used to enhance the coating performance. In the present work, the adhesives of high strength are used as infiltrator for plasma sprayed alumina coatings to investigate the effect of the infiltration on the adhesive strength and erosion resistance. The adhesive strength of coating after infiltration is tested following ASTM-C-633 standard with the same adhesive. The commercial adhesives used are liquid types of adhesives. Alumina coatings are deposited by plasma spraying to a thickness about 500ìm. The adhesive strength of as-sprayed coating was tested using another epoxy resin adhesive. The test pieces are prepared without infiltration of adhesive into the coating. The results revealed that the infiltration of adhesive to alumina coating can improve significantly the adhesive strength and erosion resistance. The adhesive strength from 40 to 55 MPa can be obtained in spite of deposition conditions. The erosion resistance of the coating at 90 degrees can be improved by a factor about 3.
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Koustas, Richard N., and John VanEgmond. "Stormwater Infiltration Device." In World Water and Environmental Resources Congress 2001. Reston, VA: American Society of Civil Engineers, 2001. http://dx.doi.org/10.1061/40569(2001)207.

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Dittrich, Rosemarie, Eberhard Mu¨ller, and Uta Popp. "C/SiC Composites by Electrophoretical Infiltration." In ASME 2006 Multifunctional Nanocomposites International Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/mn2006-17014.

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Due to its high thermodynamical stability carbon fiber reinforced silicon carbide is an interesting material for high temperature applications. Studies are described to find an innovative route for fabricating C/SiC composites by using electrophoresis for infiltrating carbon fiber mats with non-aqueous suspensions of mixtures of silicon carbide powders, stabilizers and sintering aids. The suitability of nano-scaled and submicron powders is discussed. Based on investigations of the interaction between the SiC particle surfaces and the carbon fibers essential technological parameters of the electrophoretic infiltration are defined. The fabrication of C/SiC composites by lamination of single infiltrated fiber mats and a subsequent thermal process is demonstrated.
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James, Sagil, and Cristian Navarro. "Molecular Dynamics Simulation of Nanoparticle Infiltration During Binder Jet Printing Additive Manufacturing Process: A Preliminary Study." In ASME 2019 14th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/msec2019-2872.

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Abstract Binder Jetting Process involves binding layers of powder material through selective deposition of a liquid binder. Binder jetting is a fast and relatively inexpensive process which does not require a high-powered energy source for printing purpose. Additionally, the binder jetting process is capable of producing parts with extreme complexities without using any support structures. These characteristics make binder jetting an ideal choice for several applications including aerospace, biomedical, energy, and several other industries. However, a significant limitation of binder jetting process is its inability to produce printed parts with full density thereby resulting in highly porous structures. A possible solution to overcome the porosity problems is to infiltrate the printed structures with low-melting nanoparticles. The infiltrating nanoparticles help fill up the voids to densify the printed parts and also aids in the sintering of the printed green parts. In addition to increasing the density, the nanoparticle infiltration also helps improve the mechanical, thermal and electrical properties of the printed part along with bringing multi-functionality aspect. Currently, there is a lack of clarity of the nanoparticle infiltration process performed to improve the quality of parts fabricated through binder jetting. This research employs Molecular Dynamics simulation techniques to investigate the nanoparticle infiltration during binder jetting additive manufacturing process. The simulation is performed at different operating temperatures of 1400 K, 1500 K, and 1600 K. The study found that the infiltration process is significantly affected by the operating temperature. The infiltration height is found to be highest at the operating temperature of 1600 K while the porosity reduction is found to be maximum at 1500 K. The infiltration kinetics is affected by the cohesion of the nanoparticles causing blockage of channels at higher operating temperatures. The simulation model is validated by comparing with the Lucas-Washburn infiltration model. It is seen that the simulation model deviates from the theoretical prediction suggesting that multiple mechanisms are driving the infiltration process at the nanoscale.
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LeBoon, Megan, and Robert G. Traver. "An Infiltration Model of an Underground Rock Storage Bed Infiltration BMP." In World Environmental and Water Resources Congress 2007. Reston, VA: American Society of Civil Engineers, 2007. http://dx.doi.org/10.1061/40927(243)11.

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Q.M. AL-HAYYALI, Fatimah. "SPONTANEOUS HISTOPATHOLOGICAL LESIONS OF THE INTESTINES, LIVER, PANCREAS AND HEART OF THE FRESHWATER FISH MASTACEMBELUS MASTACEMBELUS (BANKS & SOLANDER 1794)." In V. International Scientific Congress of Pure, Applied and Technological Sciences. Rimar Academy, 2022. http://dx.doi.org/10.47832/minarcongress5-24.

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The purpose of this study was to report spontaneous histopathological lesions of the intestines, liver , pancreas and heart of Mastacembelus mastacembelus collected from Tigris river, Ninevha Province, Iraq. Parasitic infections of the intestinal tissues were common in these fishes and were in the form of parasitic nodules in the intestinal submucosa consisting of the parasites or their larval stages surrounded by fibrous tissue capsules. Focal or diffuse infiltrations of mononuclear cells (macrophages, lymphocytes and plasma cells) were seen involving most of the intestinal layers. Patchy degeneration and desquamation of the intestinal epithelium were observed in some of the infected fishes. The livers of these fishes showed dilatation of the sinusoids, focal hepatitis with the infiltration of inflammatory mononuclear cells, and portal fibrosis. Myocarditis occurred in these fishes and was characterized by the infiltration of mononuclear cells between the bundles of myocardial fibers. A similar infiltration of mononuclear cells was seen in the pancreatic srtoma. From results of this study it was concluded that naturally – occurring pathological lesions are common in fishes of the species M. mastacembelus and that further studies are needed to a certain the nature of the etiological agents
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Baukal, Charles E., and Wesley R. Bussman. "Process Heater Air Infiltration." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-39988.

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Process heaters are among the largest energy consumers in industry. Many of them were built years ago and often are not well sealed which leads to excessive air infiltration. Air leaks may be caused by cracks in the wall, by sight ports that are not properly sealed or may even be left open, failure to close air registers for burners that are out of service, improper sealing of penetrations through the heater walls, and by excessive draft levels in the heater. These leaks reduce energy efficiency and indirectly increase pollution emissions as more fuel must be consumed for a given production rate. Leaks may also directly cause NOx emissions to increase due to increased excess oxygen. Excessive air leakage can indirectly cause process burners to operate improperly. The excess oxygen level in a heater is normally controlled to a certain target value, typically about 2–3% by volume for gaseous fuels. Process burners are designed assuming that all of the air for combustion goes through the burner. However, if a significant amount of air is leaking into a heater, the measured excess oxygen level may be on target but not enough of the air is coming through the burner which can adversely affect performance. The flame length may be dramatically increased as the flame searches for air to complete combustion which often causes flame impingement on process tubes. The heat flux distribution may be shifted as the flame length increases. The flames may even become unstable if they are sufficiently starved for air. The draft level in a heater varies with elevation which means that air infiltration depends not only on the size of the leak opening, but also on its location. This paper will include an analysis of how excess air infiltration affects thermal efficiency and how the location of the leak and the heater draft level affect the amount of air infiltration. The impact of air infiltration on burner performance will be discussed. Techniques will be recommended for detecting air leaks and how to correct them.
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Traver, Robert G. "Infiltration Strategies for LID." In World Water and Environmental Resources Congress 2004. Reston, VA: American Society of Civil Engineers, 2004. http://dx.doi.org/10.1061/40737(2004)83.

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Sherman, Max. "Air infiltration in buildings." In AIP Conference Proceedings Vol. 135. AIP, 1985. http://dx.doi.org/10.1063/1.35480.

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Nemejcova, Kristyna, Ivana Ticha, Ondrej Kodet, Miroslav Dura, Michaela Bartu, and Pavel Dundr. "Abstract 4069: Evaluation of inflammatory infiltration (tumor infiltrating lymphocytes - TIL) in malignant melanoma." In Proceedings: AACR Annual Meeting 2018; April 14-18, 2018; Chicago, IL. American Association for Cancer Research, 2018. http://dx.doi.org/10.1158/1538-7445.am2018-4069.

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Reports on the topic "Infiltration"

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Andre Unger and Gudmundur Bodvarsson Ardyth Simmons. Simulating Infiltration at the Large-Scale Ponded Infiltration Test, INEEL. Office of Scientific and Technical Information (OSTI), May 2001. http://dx.doi.org/10.2172/786550.

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McCurley, R. Analysis of Infiltration Uncertainty. Office of Scientific and Technical Information (OSTI), October 2003. http://dx.doi.org/10.2172/836530.

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Ng, Lisa. Implementing NIST infiltration correlations. Gaithersburg, MD: National Institute of Standards and Technology, 2022. http://dx.doi.org/10.6028/nist.tn.2221.

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Ng, Lisa. Implementing NIST Infiltration Correlations. Gaithersburg, MD: National Institute of Standards and Technology, 2023. http://dx.doi.org/10.6028/nist.tn.2221-upd1.

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Starr, T. L. Modeling of chemical vapor infiltration. Office of Scientific and Technical Information (OSTI), February 1989. http://dx.doi.org/10.2172/6408754.

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Pacira. Bilateral Tap Infiltration of EXPAREL. Touch Surgery Simulations, 2017. http://dx.doi.org/10.18556/touchsurgery/2017.s0115.

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Phifer, M. A. Engineered Trench #3 Infiltration Estimates. Office of Scientific and Technical Information (OSTI), December 2012. http://dx.doi.org/10.2172/1057752.

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Devlin, D. J. Microwave assisted chemical vapor infiltration. Office of Scientific and Technical Information (OSTI), December 1993. http://dx.doi.org/10.2172/10112511.

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Hurst, T., S. Tyler, and J. Hess. Red Canyon wash infiltration studies. Office of Scientific and Technical Information (OSTI), September 1990. http://dx.doi.org/10.2172/6602739.

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Feustel, H. Mathematical modelling of infiltration and ventilation. Office of Scientific and Technical Information (OSTI), November 1989. http://dx.doi.org/10.2172/7154245.

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