Dissertationen zum Thema „Analyse des infiltrations“
Geben Sie eine Quelle nach APA, MLA, Chicago, Harvard und anderen Zitierweisen an
Machen Sie sich mit Top-50 Dissertationen für die Forschung zum Thema "Analyse des infiltrations" bekannt.
Neben jedem Werk im Literaturverzeichnis ist die Option "Zur Bibliographie hinzufügen" verfügbar. Nutzen Sie sie, wird Ihre bibliographische Angabe des gewählten Werkes nach der nötigen Zitierweise (APA, MLA, Harvard, Chicago, Vancouver usw.) automatisch gestaltet.
Sie können auch den vollen Text der wissenschaftlichen Publikation im PDF-Format herunterladen und eine Online-Annotation der Arbeit lesen, wenn die relevanten Parameter in den Metadaten verfügbar sind.
Sehen Sie die Dissertationen für verschiedene Spezialgebieten durch und erstellen Sie Ihre Bibliographie auf korrekte Weise.
Väyrynen, J. (Juha). „Immune cell infiltration and inflammatory biomarkers in colorectal cancer“. Doctoral thesis, Oulun yliopisto, 2014. http://urn.fi/urn:isbn:9789526206417.
Der volle Inhalt der QuelleTiivistelmä Kolorektaalisyöpä on yksi yleisimmistä pahanlaatuisista kasvaintaudeista ja syöpäkuolemien aiheuttajista Suomessa. Tulehdussolujen korkean määrän kasvainnäytteissä on havaittu olevan yhteydessä potilaiden parempaan ennusteeseen. Tarkat ja luotettavat analyysimenetelmät sekä tieto eri tulehdusmerkkiaineiden keskinäisistä yhteyksistä olisivat tärkeitä, jotta tulehdussolukon määritystä voitaisiin luotettavasti käyttää potilaiden ennusteen arviointiin. Tutkimuksessa otettiin käyttöön ja validoitiin uusi tietokonepohjainen menetelmä kasvaimen tulehdussolukon arviointiin sekä uusi menetelmä kolorektaalisyövän imukeräsreaktion arviointiin. Kasvainnäytteiden tulehdussolukon määrää ja laatua analysoitiin itsenäisissä 418 (Kohortti 1) ja 149 (Kohortti 2) kolorektaalisyöpäpotilaan aineistoissa uusia menetelmiä hyödyntäen. Lisäksi kohortilta 2 sekä 83 terveeltä ikä- ja sukupuolivalikoidulta verrokilta määritettiin seerumin matriksin metalloproteinaasi-8 (MMP-8) -taso. Tietokonepohjaisen kuva-analyysin tarkkuus ja toistettavuus todettiin erinomaiseksi. Kasvainnäytteistä analysoitujen tulehdussolutyyppien määrät olivat riippuvaisia toisistaan mast-soluja ja CD1a+ epäkypsiä dendriittisoluja lukuun ottamatta. T-solujen runsas määrä oli yhteydessä taudin vähäisempään uusiutumisriskiin. Korkea imukerästiheys kasvainnäytteissä oli yhteydessä matalaan levinneisyysasteeseen sekä potilaiden parempaan ennusteeseen levinneisyysasteesta riippumatta. Seerumin MMP-8-tason mediaani oli potilailla yli kolme kertaa korkeampi kuin terveillä verrokeilla. Tutkimus tuo lisätietoa eri tulehdussolutyyppien ja tulehdusmerkkiaineiden merkityksestä kolorektaalisyövässä, ja sen tuloksena validoitiin uusia tulehdussolukon analysointimenetelmiä. Tulosten perusteella erityisesti kasvaimen alueen T-solujen ja imukerästen tiheys tuovat hyödyllistä tietoa potilaiden ennusteesta. Lisätutkimuksia tarvitaan seerumin MMP-8:n mahdollisesta soveltuvuudesta kolorektaalisyövän diagnostiikan, seurannan tai ennusteen määrittämisen apuvälineeksi
Mubarak, Ibrahim. „Caractérisation des paramètres hydrodynamiques du sol sous irrigation localisée : analyse de leur évolution spatio-temporelle : application à la modélisation“. Grenoble INPG, 2009. http://www.theses.fr/2009INPG0046.
Der volle Inhalt der QuelleSoil water flows under drip irrigation are heavily reliant on soil hydraulic properties. The main objectives of this thesis are to assess the spatio-temporal change in soil hydraulic properties on drip-irrigated fields, and to analyze their impacts on the water flow through modelling. Soil hydraulic properties, determined by the Beerkan method, underwent changes during the drip-irrigated cropping cycle. These changes were defined as irrigation effects and root growth. A geostatistical analysis was used to examine the stability of the spatial structure of soil hydraulic properties, independent of the infiltration method but dependent on the method of soil hydraulic parameterization. The analytical and numerical simulations show that spatio-temporal changes in topsoil hydraulic properties has no significant effect on soil moisture distribution under our agro-pedo-climatic conditions. The role of soil seems limited to that of a simple exchange factor between the emitters and the roots
GARCIA, ARISTIZABAL Edwin Fabian. „Numerical Analysis of the Rainfall Infiltration Problem in Unsaturated Soil“. 京都大学 (Kyoto University), 2010. http://hdl.handle.net/2433/126786.
Der volle Inhalt der QuelleRousseau, Marie. „Propagation d'incertitudes et analyse de sensibilité pour la modélisation de l'infiltration et de l'érosion“. Phd thesis, Université Paris-Est, 2012. http://pastel.archives-ouvertes.fr/pastel-00788360.
Der volle Inhalt der QuelleÖstblom, John. „Utredning av Valboåsens grundvattenmagasins förbindelse med Gavleån : En analys av halten löst syre genom mätningar“. Thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-19859.
Der volle Inhalt der QuelleGävle municipality's water company is Gästrike Vatten AB. They manages the drinking water production for the City of Gävle. The production starts in the ridge of Valbo which extends between Överhärde (located in the south part of Valbo) and Strömsbro (located in the north part of Gavle). Purpose of this report is to measure the dissolved oxygen content in the aquifer throughout the whole area to investigate where the infiltration from the nearby Gavle River occurs. The aim of the study is to get a better understanding of the complexity of the Valbo ridge. The measurements will help to verify or modify the conceptual model of the directions of water flow in the Valbo ridge, developed by Midvatten AB. Dissolved oxygen content was measured through ground water pipes. To assess the pipes’ capacity and connection to the aquifer, slug tests were performed. The dissolved oxygen data were analyzed and compared with the conceptual model. The results showed that the dissolved oxygen content in the water supported the conceptual model to a large extent and also gave previously unknown information on some stretches of the ridge. The method shows great potential for additional future studies in Valbo ridge and elsewhere. To expand the study further, a need for more sampling of the aquifer throughout the areas that were not included in this study.
Féron, Olivier. „CVD/CVI du pyrocarbone : analyse in situ de la phase gazeuse ; études cinétique et structurale“. Bordeaux 1, 1998. http://www.theses.fr/1998BOR10540.
Der volle Inhalt der QuelleHautier, Mathieu. „Analyse des réparations des matériaux composites : mise en œuvre d'un procédé par infiltration et étude du comportement mécanique“. Phd thesis, Université Paul Sabatier - Toulouse III, 2010. http://tel.archives-ouvertes.fr/tel-00550139.
Der volle Inhalt der QuelleHautier, Mathieu. „Analyse des réparations des matériaux composites : mise en œuvre d'un procédé pas infiltration et étude du comportement mécanique“. Toulouse 3, 2010. http://thesesups.ups-tlse.fr/1128/.
Der volle Inhalt der Quelle"Conventional" or certified repair procedures for composite structures (i. E. Patches) are usually time-consuming, performed by highly qualified staff and seem immoderate regarding the most common damage found in aeronautics due to low energy impact. A cost-effective and simple repair method based on liquid resin infiltration in the induced crack net is proposed. An analytical model based on damage geometry and physical chemistry properties, is developed to verify the resin infiltration capabilities. An experimental protocol has been developed to identify those properties with conditions similar to the infiltration process (roughness, temperature,. . . ). An experimental set up has been manufactured and different configurations (injection pressure level, infiltration resin toughness. . . ) are studied. Non destructive testing, like ultrasonic inspection, combined to micrographic inspection show good experimental infiltration capabilities. To initiate the validation procedure of this repair, the second part of this work deals with the mechanical behaviour and strength of the repair with experimental tests campaign. Numerical models are used for analysis and understanding. Two different scales are considered at interface (material) and structural level. Fracture Mechanics tests are performed with classical tests such as DCB or ENF, and a new original one, Tensile Flexure test on Notched Specimen (TFNS test), to characterize and identify the repaired interface properties. For their severity regarding composite materials behaviour, both CAI and re-indentation (in-plane and out-of-plane solicitation representative of real loading conditions) were performed on repaired samples. Those complementary tests show that this infiltration repair method restores mechanical properties when proper toughened resins are used
Renault, Daniel. „Modélisation hydrologique en irrigation de surface : analyse de la vitesse de la linéarisation de la vitesse du front d'avencement : alive“. Montpellier 2, 1991. http://www.theses.fr/1991MON20224.
Der volle Inhalt der QuelleQvick, Erika. „How can Inflow & Infiltration be effectively and sustainably managed? : MCA as a tool for decision support in planning Inflow & Infiltration“. Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-299746.
Der volle Inhalt der QuelleTillskottsvatten härstammar från grundvatten, nederbörd samt havsvatten genom felaktiga anslutningar eller läckage i ledningsnätet samt från överläckage från dricksvattenledningar. Det är andelen av vatten i avloppsnätet som inte är spillvatten och orsakar, genom bräddning, översvämningar och förbiledning i reningsverket, utsläpp av avloppsvatten till recipienter och natur samt står för en överbelastning i systemet. Trots att man arbetat med att minska och lindra effekterna av tillskottsvatten under lång tid så kvarstår problemet och en stor andel av allt samlat vatten i ledningsnätet och som kommer till reningsverket är just tillskottsvatten. Historiskt, samt för många fall i nuläget, så existerar det lite till ingen metodik kring hur arbetet med tillskottsvatten sker i kommunerna och ansvariga VA-organisationer utan åtgärder har implementerats på måfå eller när något har gått sönder. En ny diskussion kring tillskottsvatten har uppstått de senaste åren på grund av uppkomna nya kravställningar från tillsynsmyndigheter. I och med att det inte finns mycket uppföljning eller metodik kring arbetet med tillskottsvatten så har processen med att ta fram en strategi för att möta dessa nya krav för kommuner ofta varit svår. I de fall som analys av åtgärder mot tillskottsvatten har utförts så har kostnad och effekter i reningsverket (det vill säga andel mängd tillskottsvatten) oftast används och andra dimensioner än ekonomiska har lämnats utanför analysen. Då tillskottsvatten påverkar sociala samt miljömässiga faktorer i hög grad bör detta tas större hänsyn till. I det här arbetet så har en multikriterieanalys utförts i en fallstudie där liknande åtgärder för att minska tillskottsvatten och dess effekter i olika områden har analyserats. De ingående åtgärderna var separering, infodring, rörspräckning samt anläggning av en dagvattenkassett. Resultatet av fallstudien visar att åtgärdsalternativ 2 har störst positiv effekt. Det finns dock stora osäkerheter i den fallstudie som utförts och resultatet anses inte vara tillräckligt robust för att användas. Det som dock har varit viktigt att ta med från arbetet är att genom att definiera och använda kriterier från alla hållbarhetsdimensioner skapas en heltäckande åtgärdsvalsanalys och att det är ett strukturerat arbetssätt att applicera. Här understryks vikten av att öppna upp för diskussion inom kommunen/organisationen för att nå en sammanhållen syn på prioriteringen av tillskottsvatten samt för att nå en effektiv hantering. Problem och mängder tillskottsvatten i olika ställen är komplext och starkt kopplat till lokala klimat och geohydrologiska förhållanden samt lokala avloppssystem. Därför är det viktigt för att samordna planeringen av tillskottsvatten att använda en arbetsgång som är generell och kan användas, oavsett förutsättningar, på ett enkelt sätt där justeringar i enlighet med lokala förutsättningar är möjligt. Det här arbetet har visat att multikriterieanalys är ett tydligt och anpassningsbart verktyg för att möta de svårigheter som finns.
Chendra, Edwin. „Examination of regression modeling for estimating airbone [sic] fungal infiltration loss factor“. Oklahoma City : [s.n.], 2005.
Den vollen Inhalt der Quelle findenVandervaere, Jean-Pierre. „Caracterisation hydrodynamique du sol in situ par infiltrometrie a disques. Analyse critique des regimes pseudo-permanents, methodes transitoires et cas des sols encroutes“. Université Joseph Fourier (Grenoble), 1995. http://www.theses.fr/1995GRE10186.
Der volle Inhalt der QuelleFranz, Torsten. „Spatial classification methods for efficient infiltration measurements and transfer of measuring results“. Doctoral thesis, Dresden : Inst. für Siedlungs- und Industriewasserwirtschaft, Techn. Univ, 2007. http://nbn-resolving.de/urn:nbn:de:swb:14-1181687412171-65072.
Der volle Inhalt der QuelleFranz, Torsten. „Spatial classification methods for efficient infiltration measurements and transfer of measuring results“. Doctoral thesis, Technische Universität Dresden, 2006. https://tud.qucosa.de/id/qucosa%3A24942.
Der volle Inhalt der QuelleFür den nachhaltigen Betrieb und die kosteneffiziente Unterhaltung von Kanalnetzen ist eine genaue Bestimmung ihrer Fremdwassersituation notwendig. Eine Optimierung der dazu erforderlichen Messkampagnen und eine zuverlässige Übertragung der Messergebnisse auf vergleichbare Gebiete sind aufgrund der hohen Aufwendungen für Infiltrationsmessungen angezeigt. Dafür wurden geeignete Methoden entwickelt, welche einerseits den Informationsgehalt von Messungen durch die Bestimmung optimaler Messpunkte verbessern und andererseits Messresultate mittels Vergleichen von Teileinzugsgebieten und Klassifizierungen von Kanalhaltungen zu anderen potenziellen Messstellen zuordnen. Die Methoden basieren auf dem Ähnlichkeitsansatz “Ähnliche Kanaleigenschaften führen zu ähnlichen Fremdwasserraten” und nutzen modifizierte multivariate statistische Verfahren. Sie haben einen hohen Freiheitsgrad bezüglich der Datenanforderung. Die Methoden wurden erfolgreich anhand gemessener und generierter Daten validiert. Es wird eingeschätzt, dass das Optimierungspotenzial bei geeigneten Einzugsgebieten bis zu 40 % gegenüber nicht optimierten Mess-netzen beträgt. Die Übertragung der Messergebnisse war mit einem akzeptablen Fehler für bis zu 75 % der untersuchten Teileinzugsgebiete erfolgreich. Mit den entwickelten Methoden ist es möglich, den Kenntnisstand über die Fremdwassersituation eines Kanalnetzes zu verbessern und die messungsbezogene Unsicherheit zu verringern. Dies resultiert in Kostenersparnissen für den Betreiber.
Björkdahl, Molly. „En effektiv brottsbekämpning på bekostnad av grundläggande fri- och rättigheter? : En analys av tillåtligheten av den okonventionella spaningsmetoden infiltration i ljuset av Europakonventionen“. Thesis, Uppsala universitet, Juridiska institutionen, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-417209.
Der volle Inhalt der QuelleChau, Ngoc An. „Analyse de l'influence des caractéristiques mécaniques et hydrauliques sur le comportement des barrages en terre et en enrochement“. Grenoble INPG, 1999. http://www.theses.fr/1999INPG0005.
Der volle Inhalt der QuelleSchernus, Martin [Verfasser]. „In-situ-Analyse der Infiltration kolorektaler Karzinome durch FOXP3+ regulatorische T-Zellen, CD3+ und CD8+ T-Zellen : Zusammenhänge mit der TAA-spezifischen T-Zell-Antwort, dem Stadium und dem Überleben / Martin Schernus“. Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2011. http://d-nb.info/1026265304/34.
Der volle Inhalt der QuelleMori, Yoshitomo. „The factor analyses concerning the infiltration of radioactive Cs for the effect of forest decontamination activities and the development of the evaluation method for the residual radioactive Cs on surfaces“. Kyoto University, 2018. http://hdl.handle.net/2433/232027.
Der volle Inhalt der QuellePohlers, Michael. „Generierung und Analyse EMA/E2F-6-defizienter Mäuse“. Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2005. http://dx.doi.org/10.18452/15393.
Der volle Inhalt der QuelleJonsson, Martin. „A performance investigation of stormwater accommodations in Stockholm : A multi-criteria decision analysis“. Thesis, KTH, Industriell ekologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210753.
Der volle Inhalt der QuelleDagvattenhantering är ett problematiskt område som under de senaste 20 åren har fått allt mer uppmärksamhet då mer föroreningar uppdagats i städerna. Den ökande föroreningen av dagvatten tenderar att orsaka en större risk för djur, människor, ekosystem och recipienter dit dagvatten rinner. På grund av uppmärksamheten som dagvattenhanteringen har fått, har myndigheter, regering och andra intressenter utvecklat dagvatten teknologin ytterligare för att skapa en modern dagvattenstrategi för att handskas med problemet. Dagvattenhantering är nödvändigt eftersom den skapar sociala, miljömässiga och tekniska fördelar samt om dagvattensystemen kombineras med funktionalitet så kan detta ge ökat skydd för ekosystemen samt förbättrad hälsa hos befolkningen i städerna. Den här rapporten beskriver sju olika typer av dagvattensystem så som; rain gardens, dagvattendammar, brunnar, skärmbassänger, svackdiken, rör-/betong magasin samt krossdiken på begäran av Structor Mark Stockholm. Utav dessa 7 dagvattensystem, ingick 3 anläggningar i en så kallad multi-criteria decision analysis (MCDA). Syftet med en MCDA är att utvärdera fyra olika kategorier som kan förknippas med dagvattenhantering. Kategorierna är miljömässiga, sociala, tekniska och ekonomiska. Dessa kategorier utger dock ett brett budskap och för att begränsa analysen så skapades parametrar. Dessa parametrar skapas utifrån varje enskild kategori. För den miljömässiga kategorin skapades parametern grad av rening, för den tekniska kategorin skapades parametern prestanda och underhåll, för den sociala kategorin skapades parametern estetiska och sociala fördelar, och slutligen för den ekonomiska kategorin skapades parametern kostnader och risker. Utifrån dessa parametrar skapades sedan kriterier med specifika huvudämnen som kan bedömas enligt en poängskala från 0-5 där 0 = insignificant, 1=Low, 2= Moderate, 3= Major, 4= High, 5= Very high. Tre dagvattensystem inkluderas i MCDA vilket var; rain gardens, dagvattendammar, krossdiken vars syfte är att rena och fördröja dagvatten. Ett referensalternativ skapades också som ävenkallas ”zero-alternative”, vilket anses inte ha någon rening av dagvatten utan är endast ett transportsystem för dagvatten. Detta referensalternativ kallas drainage by piping. Poängsättningen gjordes av intressenter och invånare i Stockholm. Intressenterna är människor som arbetar med dagvattenhantering antingen på planeringsstadiet eller ute i fält som drift och underhålls personal. Invånare i Stockholm bedömde endast den sociala kategorin eftersom det kan sakna kunskap och insyn i det miljömässiga, tekniska och ekonomiska detaljerna. Totalt kontaktades 20 intressenter där 5 personer valde att medverka i MCDA. Invånare i Stockholm intervjuades på stan, totalt frågades ca 60 personer varav 13 personer valde att medverka i poängsättningen. Poängsättningen av de tre valda dagvattensystemen samt referensalternativet, efter beräkningav medelvärdet samt den totala summeringen resulterade i att dagvattendammar fick den hösta poängen 11,9 hamnade rain garden på andra plats med 11,4, krossdike på tredje plats med 11,3 samt referensalternativet på en fjärde plats med 7,3. De tre dagvattensystemen hade ett relativt liknande slutgiltigt resultat. Dock så skilde sig den individuella kategoriska bedömningen av miljömässiga, tekniska, sociala samt ekonomiska aspekten med större varierande resultat. Även om deltagandet av intressenter var relativt lågt, endast 25 % av det kontaktade intressenterna valde att ställa upp, så anses dessa intressenter vara viktiga för det här projektet då de, utifrån deras kunskap, bedömer det uppsatta kriterierna och det är denna bedömning som resultatet baseras på. Resultaten mellan det olika dagvattenanläggningarna som var inkluderade i MCDA var svåra att särskilja, troligtvis beroende på att ingen viktningsmetod användes. Däremot så är en fördel med MCDA som verktyg i det här fallet, att det gav en indikation på att MCDA kan fungera som ett stödjande verktyg för beslutsfattare även om resultatet i det här fallet var svårt att särskilja. Själva metoden, upplägget och analysen kan användas som medel för att avgöra vilken typ av dagvattenanläggning som passar bäst utifrån de kriterier som är uppsatta. Slutligen så gav intressenterna en påvisning att dagvattenanläggningar ska konstrueras så att hänsyn tas till omkringliggande omständigheter, där varje plats ska ansesvara unik. Det krävs en platsspecifik utredning där hänsyn till geologiska, geotekniska,hydrologiska samt infrastrukturella och miljömässiga aspekter bör utredas innan valet av dagvattensystem bestäms.
Kadiyala, Akhil. „Identification of Factors Affecting Contaminant Levels and Determination of Infiltration of Ambient Contaminants in Public Transport Buses Operating on Biodiesel and ULSD Fuels“. Connect to full text in OhioLINK ETD Center, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=toledo1221524830.
Der volle Inhalt der QuelleTypescript. "Submitted as partial fulfillments of the requirements for The Master of Science in Engineering." "A thesis entitled"--at head of title. Bibliography: leaves 81-92.
Silva, Rodrigo Garozi da. „Estudo de concreto permeável como pavimento /“. Ilha Solteira, 2019. http://hdl.handle.net/11449/182415.
Der volle Inhalt der QuelleResumo: Inúmeros problemas sociais e ambientais são causados pela impermeabilização dos solos em decorrência da urbanização descontrolada e sem planejamento. O pavimento em concreto permeável aparece como uma forma de mitigação de enchentes, devido à sua característica de permitir a infiltração total ou parcial de água proveniente de precipitações. O objetivo deste trabalho foi estudar um traço eficiente e empregá-lo de maneira efetiva em uma calçada, para promover a captação total de eventos pluviométricos ocorridos no local e observar, com o decorrer do tempo, a eficiência de manutenção periódica na superfície do pavimento permeável quanto à colmatação. Foram experimentadas três proporções de misturas: 1:3,5; 1:5 e 1:6,5, sendo que em nenhuma foi utilizado agregado miúdo. Também foi observado o comportamento das misturas com duas granulometrias de agregados graúdos de 9,5/25,0 e 4,75/12,5. Ensaios destrutivos e não destrutivos foram realizados, entre eles: resistência à compressão axial, tração por compressão diametral, tração na flexão e taxa de infiltração. A mistura mais eficiente e escolhida para a construção da calçada foi a de teor 1:5, com a utilização do agregado de faixa granulométrica 4,75/12,5. Testes estatísticos ―t Student” foram utilizados para comparar os resultados obtidos na presente pesquisa com trabalhos semelhantes. A calçada foi dimensionada para ter eficiência de caráter pluviométrico, de acordo com incidência pluviométrica regional e mecânico através de análi... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Uncounted social and environmental problems are caused by the waterproofing of soils as a result of uncontrolled and unplanned urbanization. The pervious concrete pavement appears as a form of flood mitigation due to its characteristic of allowing total or partial infiltration of water from rainfall. The aim of this work was to study an efficient mixture and to use it effectively on a sidewalk, to promote the total retention of rainfall events occurring locally and to observe the efficiency of periodic maintenance on the pervious pavement surface, regarding clogging over time. Three proportions of mixtures were tested: 1:3.5; 1:5 and 1:6.5, in which none fine aggregates was used. Furthermore, the behavior in the mixtures of two coarse aggregates gradations of 9.5/25.0 and 4.75/12.5 was observed. Destructive and non-destructive tests were performed, such as: compressive strength, splitting tensile strength, flexural strength and infiltration rate. The most efficient and chosen mixture for the construction of the sidewalk was 1:5, with the use of the aggregate size 4.75/12.5. ―Student’s t‖ statistical tests were used to compare the results obtained in the present research with similar works. The sidewalk was dimensioned to have rainfall efficiency, according to regional rainfall incidence, and mechanical efficiency, through analysis in the EverFE computational program, followed by calculation of fatigue life. The permeability rate of the pavement was monitored weekly over time,... (Complete abstract click electronic access below)
Mestre
Ros, William. „Modélisation multi-échelle de l’infiltration chimique à partir de la phase vapeur de composites à renforts fibreux“. Thesis, Bordeaux 1, 2011. http://www.theses.fr/2011BOR14408/document.
Der volle Inhalt der QuelleCeramic matrix composites and carbon fiber reinforced carbon composites are dedicated to high temperature applications. They consist of a stacked fibrous arrangement, woven or not, coated by matrix. Chemical Vapor Infiltration (CVI) is a popular processing route, where a preform (fibers with or without a first matrix) is placed inside a furnace. Precursor gases are then injected, enter the preform and generate matrix formation by heterogeneous chemical reaction. Experimental optimization of CVI is long and costly, triggering the need for a numerical model. The creation of such a tool has been the objective set for this thesis.Two programs were first developed and validated. Each is linked to a specific material scale: microscopic (fiber scale) and macroscopic (composite scale). Both are based on a random walk algorithm and require three-dimensional representations of the preform. X-ray tomography scans of C/C and SiC/SiC composite preforms were performed at the desired scales. The fiber scale program was used for computation of geometrical, diffusive and reactive properties in several regions of the relevant image. Correlations between these properties are created and inserted into the composite scale program for numerical infiltration.In the case of C/C composites, this multi-scale tool was coupled to a chemical model for anticipation, under various operating conditions, of matrix thickness and microtexture. Densification previsions on different SiC/SiC composites enabled their direct measure and comparison of their infiltrability
Bourgeois, Marc. „Le concept de barrière capillaire : étude par modèle numérique“. Paris, ENMP, 1986. http://www.theses.fr/1986ENMP0017.
Der volle Inhalt der QuellePeixoto, Vinicius Carvalho. „Análise paramétrica e dimensionamento de poços de infiltração para fins de drenagem urbana“. Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/18/18132/tde-06122011-105856/.
Der volle Inhalt der QuelleThe chief consequence of unplanned urban sprawl is the turning to impervious large tracts of land. Impervious developed areas are prone to floods during heavy rains. Flooding may be mitigated by installation of devices that can control runoff at the source. Examples of control devices are infiltration wells, infiltration trenches, permeable pavement, and rain gardens. By facilitating infiltration, such devices serve to return to the soil below the waterproofed area the waters that would otherwise be lost as runoff, which overloads urban drainage. A study of infiltration wells was conducted through parametric analyses of hydraulic conductivity function and soil-water characteristics curve of unsaturated soils in the process of infiltration. This research used the computer program SEEP/W by GeoStudio 2004 to carry out the parametric analysis. SEEP/W uses the finite element method for the numerical solution of Richards equation, which describes water flow in the unsaturated zone. The parametric analysis showed that the saturated hydraulics conductivity of the soil is the parameter that has greater relevance in the process of infiltration of water into the soil surrounding the wells. Based on the results obtained, a technical procedure was developed to assist the consulting professional to size the infiltration wells. The variables employed in the proposed design procedure consist of time of precipitation, saturated hydraulic conductivity, and total surface area of well. Further, it was compared the estimated volume of infiltrated water obtained through this procedure to the measured volume obtained by Lima (2009) in a small trench. It was observed that the scaling procedure proposed by this work yields results consistent with infiltration field experiments such as that conducted by Lima (2009).
Weiss, Philipp. „Enskilda avloppsanläggningar med fosforbindning i Stockholms län : en miljösystemanalys med metodik från livscykelanalys“. Thesis, Uppsala University, Department of Earth Sciences, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-88822.
Der volle Inhalt der QuelleModern, small-scale wastewater treatment faces a twofold challenge: On the one hand requirements from legal authorities regarding removal of eutrophying substances have become more demanding. On the other hand high-quality phosphorus reserves are dwindling, which has raised calls for increased recycling. The problem is acute in the county of Stockholm where about 34 000 households are identified to not possess adequate wastewater treatment facilities. In this master’s thesis, four treatment systems, of which three had some phosphorus recycling potential, were compared using life cycle assessment methodology. The small-scale treatment systems analyzed were infiltration, filter beds with Filtralite® P and Filtra P respectively as filter material and a chemical precipitation system. The system boundaries included the extraction of raw materials, production of materials and components, the construction and operation of the systems as well as deconstruction and recycling of the treatment plants. Apart from impacts on human health and acidification potential, which both proved to be of less relevance to the final results, energy usage, consumption of abiotic resources, global warming potential and eutrophication potential were taken into account in this study.
The infiltration system attained the most favourable results in all impact categories save eutrophication potential, which was due to both the low usage of energy and resources as well as the system’s high life expectancy. The filter bed system using Filtralite® P demonstrated the best performance in reduction of eutrophying substances. However, the system’s energy demand and emissions of greenhouse gases by far exceeded the other systems’ results in these categories. Both the filter bed system using Filtra P and the chemical precipitation system fared relatively equal in the overall analysis, with moderate impacts in all categories. The nutrient recycling potential was shown to be limited by the waste products’ relatively high heavy metal content. Sludge from chemical precipitation had higher potential for replacement of fertilizer than filter bed material.
The chemical precipitation system fared best in the overall assessment. Its technical immaturity and limited data foundation put the alternative using Filtra P into second place. The infiltration system’s limited treatment performance and inexistent recycling potential put this alternative into third place. The alternative using Filtralite® P was ruled out entirely because of its high impact on fossil fuel consumption and global warming. Based on this ranking recommendations were made.
Even though the filter bed materials in this study showed excellent phosphorus removal capacity, further research into alternative filter bed materials will have to be made due to the materials’ environmental impacts in other areas. Focus should be on waste material and natural products (such as shell sand) with low environmental impacts from production. Ways of separating heavy metals from plant nutrients need to be explored if nutrient recycling is to be an aim. This study showed that good phosphorus removal characteristics can lead to an increase in other environmental impacts, which in some cases even may outweigh the positive effects of decreased eutrophication.
Modern, småskalig avloppsreningsteknik står inför två utmaningar. Å ena sidan har kraven från lagstiftaren på rening av eutrofierande ämnen ökat. Problemet är akut i Stockholms län där det finns ca. 34 000 hushåll som inte anses uppfylla reningskraven. Å andra sidan minskar fosforförekomsterna av hög kvalitet i allt större takt, vilket har väckt krav på ökad återföring av växtnäring. I detta examensarbete undersöktes fyra olika reningstekniker, varav tre har en viss återföringspotential, med hjälp av metodik från livscykelanalys. Systemen som undersöktes var infiltration, filterbäddar dels med Filtralite® P och dels med Filtra P som filtermaterial, samt ett kemikaliefällningssystem. Systemgränserna omfattade extraktion av råmaterial, produktion av anläggningsmaterial och –komponenter, uppförande och drift av systemen samt avveckling av anläggningarna och återföring av restmaterial. Förutom påverkan på mänsklig hälsa och försurningspotential, som visade sig vara mindre relevanta för slutresultaten, omfattade analysen även en undersökning av energianvändning, förbrukning av abiotiska resurser, potential för global uppvärmning och eutrofieringspotential.
Infiltrationslösningen fick de mest fördelaktiga resultatvärden i alla kategorierna förutom eutrofieringspotential, vilket kan förklaras med systemets låga energi- och resursbehov samt dess höga livslängd. Filterbädden med Filtralite® P som filtermaterial uppvisade den största förmågan att reducera eutrofierande substanser. Systemets energibehov och utsläpp av växthusgaser översteg dock de andra systemens resultat i dessa kategorier kraftigt. Både anläggningen med Filtra P och kemikaliefällningslösningen fick liknande resultat, med måttlig påverkan i alla kategorier. Systemens återföringspotential visade sig vara begränsad av restprodukternas höga tungmetallhalt. Kemikaliefällt slam hade högre återföringspotential än filterbäddsmaterial.
Kemikaliefällning klarade sig totalt sett bäst i studien. Den relativt obeprövade tekniska utformning och det osäkra dataunderlaget ledde till att Filtra P hamnade i rangordningen efter kemikaliefällning. Infiltrationssystemets begränsade reningsförmåga och den obefintliga återföringspotentialen ledde till att alternativet hamnade näst sist. Filtralite® P-alternativet blev placerat sist i rangordningen på grund av dess stora påverkan på förbrukning av fossila bränslen och global uppvärmning. Baserat på rangordningen utfärdades rekommendationer.
Trots att filtermaterialen som undersöktes i denna studie har en utmärkt fosforreningsförmåga, kommer det att krävas fler studier med avseende på alternativa filtermaterial, eftersom materialens användning av icke-förnybara energikällor är mycket stor vid tillverkningen. Fokus borde ligga på återvunna eller naturliga material (som t.ex. snäcksand) med låg miljöpåverkan vid tillverkning. Om återföring av växtnäring ska bli ett mål inom småskalig avloppsvattenrening, måste effektiva sätt att separera tungmetaller från växtnäringsämnen utforskas. Denna studie visade att goda fosforavskiljningsegenskaper kan medföra att andra typer av miljöpåverkan ökar, vilket i vissa fall kan leda till att de negativa konsekvenserna överväger nyttan av minskad eutrofiering.
Moderne, dezentrale Abwassertechnik steht zwei großen Herausforderungen gegenüber. Zum einen sind die Ansprüche von Seiten des Gesetzgebers gestiegen, die effektivere Abwasserreinigungstechniken erfordern. Zum andern werden Phosphorvorkommen von hoher Qualität zunehmend knapper, was Rufe nach verstärkter Rückführung von Phosphor hat laut werden lassen. Im Verwaltungsbezirk Stockholm, in dem es ungefähr 34 000 Haushalte mit unzureichender Abwasserreinigung gibt, ist das Problem von besonderer Bedeutung. In dieser Diplomarbeit wurden vier Abwasserreinigungssysteme, wovon drei ein gewisses Potential für Phosphorrückführung haben, mit Hilfe einer Ökobilanzierung untersucht. Folgende Systeme wurden untersucht: Eine Infiltrationsanlage, zwei Filterbettsanlagen, eine mit Filtralite® P und eine mit Filtra P als Filtermaterial sowie ein System mit Chemikaliefällung. Die Systemgrenzen umfassten die Gewinnung und Verarbeitung von Rohstoffen, das Errichten der jeweiligen Anlage, deren Betrieb sowie Rückgewinnung und Entsorgung von Restmaterialien. Neben Auswirkungen auf die menschliche Gesundheit und Versauerungspotential, die sich im Nachhinein als weniger relevant erwiesen, wurden Energiebedarf, Verbrauch abiotischer Resourcen, Potential für globale Erwärmung und Eutrophierungspotential untersucht.
Die niedrigsten Resultate in allen Kategorien außer Eutrophierungspotential wurden vom Infiltrationssystem erreicht. Filtralite® P erwies sich als am leistungsstärksten, was die Reduktion von eutrophierenden Substanzen angeht. Der Energiebedarf und die Emissionen von Treibhausgasen dieser Alternative überstieg die Ergebnisse der anderen Alternativen in diesen Kategorien doch bei weitem. Filtra P und Chemikaliefällung erzielten moderate Auswirkungen in allen Kategorien. Das Potential für die Rückführung von Pflanzennährstoffen wird, wie die Ergebnisse zeigen, vom relativ hohen Schwermetallhalt in den Restprodukten begrenzt.
Chemikaliefällung ist in dieser Studie die beste Alternative. Filtra P zeigte sich als technisch noch zu wenig ausgereift und die Datenunterlage als zu unvollständig, weswegen diese Alternative an zweiter Stelle steht. Die begrenzte Reinigungsfähigkeit des Infiltrationssystemes und das nicht vorhandene Potential für Rückführung von Phosphor führten dazu, dass diese Lösung an dritter Stelle steht. Das System mit Filtralite® P als Filtermaterial wurde wegen seines großen Verbrauchs von fossilen Brennstoffen für wenig brauchbar befunden und steht damit an letzter Stelle.
Trotz ihrer hervorragenden phosphorreduzierenden Eigenschaften, wird weitere Forschung im Bereich alternativer Filtermaterialien notwendig werden. Hierbei sollten natürliche Materialien (wie Muschelsand) oder Restprodukte im Mittelpunkt des Interesses stehen, um die Umweltauswirkungen gering zu halten. Wenn die Rückführung von Phosphor ein Ziel der Abwasserreinigung sein soll, müssen Lösungen, Schwermetalle von Pflanzennährstoffen zu trennen, gefunden werden. Diese Studie hat gezeigt, dass gute phosphorreduzierende Eigenschaften zu verstärkten Umweltauswirkungen in anderen Bereichen führen können, welche in manchen Fällen sogar die Vorteile einer verringerten Eutrophierung übersteigen können.
Santos, Cláudio Rodrigues dos. „Análise paramétrica da infiltração e sua influência na estabilidade de taludes em solo não saturado“. Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/18/18132/tde-22032010-104230/.
Der volle Inhalt der QuelleA parametric study is presented about water infiltration and its repercussion in the safety factor of unsaturated soil slopes. In the analysis it is adopted a reference slope with determined geometry according to the typical inclination for slopes in silty clayey sand, characteristic of the mid-western region of São Paulo State, in Brazil. The parametric analysis was developed from a flux simulation in transient regime using the SEEP/W software, which uses the finite elements method, and thereafter, a stability analysis of the reference slope using simplified Bishop method, as presented in the SLOPE/W software. Homogeneous slopes composed by three different types of soil (sand, clayey silt and silty clayey sand) were considered. The analyzed parameters include the water retention curve, the hydraulic conductivity function and the precipitation intensity. It was verified that the hydraulic conductivity function and the air entry value are the main determinants of the infiltration behavior and, subsequently, of the slope stability. The flux simulations have evidenced that coarser soils slopes show higher infiltration rates than the ones presented in finer soil slopes. Consequently, the slides caused by the loss of the suction\'s contribution to shear strength occur primarily in coarser soil slopes than in fine soil slopes, what could be verified in the stability analysis of the reference slope.
Gonzalez, Camacho Juan-Manuel. „Modélisation stochastique d'une irrigation à la raie“. Montpellier 2, 1991. http://www.theses.fr/1991MON20302.
Der volle Inhalt der QuelleLipinský, Vít. „Detekce infiltrace srážkové vody metodou EIS“. Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225719.
Der volle Inhalt der QuelleGandola, Franck. „MMéthodologie de visualisation des écoulements en milieux non saturés : théorie et expériences“. Université Joseph Fourier (Grenoble), 1999. http://www.theses.fr/1999GRE10178.
Der volle Inhalt der QuelleMuthineni, Srinivas. „Two Dimensional Numerical Modelling Of Variably Saturated Flows“. Thesis, Indian Institute of Science, 2000. https://etd.iisc.ac.in/handle/2005/255.
Der volle Inhalt der QuelleMuthineni, Srinivas. „Two Dimensional Numerical Modelling Of Variably Saturated Flows“. Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/255.
Der volle Inhalt der QuelleSmati, Abdenasser. „Contribution à l'étude des transferts de chaleur et de masse dans le matériau de remplissage d'un stockage de déchets haute activité“. Paris 6, 1986. http://www.theses.fr/1986PA066143.
Der volle Inhalt der QuelleQuadri, Marintho Bastos. „L'infiltrométrie multi-disques pour la caractérisation hydro-dispersive des sols non saturés : modélisation des transferts et applications“. Grenoble 1, 1993. http://www.theses.fr/1993GRE10100.
Der volle Inhalt der QuelleVallin, Hanna. „Utvärdering av multikriterieanalys som verktyg för spatial resursallokering av dagvattenåtgärder för tillskottsvatten i spillvattennät“. Thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-297734.
Der volle Inhalt der QuelleUrbanization along with a greater amount of hardened surfaces affects the storm water management. When the flows get faster and larger amounts create runoff, it is crucial that the available systems are able to handle the water. Storm water from roofs and asphalt surfaces and drainage water can be connected to the sewage water pipelines and make the flows in the conduits at rainfall much greater than they are designed for, leading to capacity issues. Many municipalities have implemented open storm water solutions instead of choosing the more cost-ineffective way of expanding the conduit system. Reconnecting downspouts, wells and drainage pipelines and digging trenches to lead the water is both cost and resource demanding. Therefore the aim of this study was to investigate whether multi criteria analysis can be used as an appropriate tool in order to allocate the resources to the most beneficial areas. This was done by developing a method for this aim and testing its robustness in order to determine if it is suitable to use in this context or if the uncertainties make the method too unreliable. The robustness in the method developed can be questioned since the uncertainties can be substantial. To be able to use this method, a lot of data is needed and the method needs to be updated relatively often in order to contain relevant information. It is recommended that a sensitivity analysis is performed along with the method, since the use of only one set of parameters can make the result relatively arbitrary. Using a Monte Carlo procedure with the uncertainties defined can reduce the time needed to measure and identify the values. The sensitivity analysis showed that the parameters that have the largest impact on the results are the number of residents living in every real estate with a basement, the catchment areas, the roughness parameters of the pipelines and the use of energy and chemicals in the system. In the future, the urbanization is expected to increase as well as the amount of rainfall and problems related to inflow and infiltration are expected to become more common. The hope is that the method used and its results will be useful for the municipalities’ future planning and to inspire to more studies on this topic.
Durin, Bertrand. „Transfert et transport colloïdal de polluants métalliquesApplications en assainissement routier“. Phd thesis, Université de Nantes, 2006. http://tel.archives-ouvertes.fr/tel-00104567.
Der volle Inhalt der QuelleJayo, Vidal Piero, und Machado Julio César Santiago Vélez. „Análisis numérico del control de infiltración de la fundación de la presa Coltani mediante el uso de pantalla de pilotes secantes“. Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2021. http://hdl.handle.net/10757/655856.
Der volle Inhalt der QuelleIn this article, a water seepage analysis was performed in the Coltani earth dam located in the department of Tacna, Peru. First, a seepage analysis was carried out using the Slide program, which allows to evaluate water flows through the permanent flow hypothesis, in a two-dimensional way and with an isotropic soil. Subsequently, the seepage of the underground water from the Coltani dam was studied, both in its initial condition and in its condition as a barrier wall. The maximum allowable seepage flow was considered as a reference to propose the alternatives in relation to its location. A diameter of 1.5 meters and a depth of 30 meters were considered with possible locations at the beginning, center and end of the dam. Finally, various outflow results were obtained in the first soil stratum, demonstrating the impact generated by the various locations of the secant piles as an impermeable wall. The main result was the ideal location of the secant piles at the end of the Coltani dam with a groundwater seepage value of 0.00276 m3/s in the initial stratum, verified in relation to the maximum allowable seepage flow (Qfmp).
Trabajo de investigación
Almadi, Alaa. „Investigating mechanical properties of ordinary portland cement : investigating improvements to the mechanical properties of Ordinary Portland Cement (OPC) bodies by utilizing the phase transformation properties of a ceramic (zirconia)“. Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/7315.
Der volle Inhalt der QuelleGutierrez, Lorena Avelina Rojas. „Avaliação da qualidade da água de chuva e de um sistema filtro-vala-trincheira de infiltração no tratamento do escoamento superficial direto predial em escala real em São Carlos SP“. Universidade Federal de São Carlos, 2011. https://repositorio.ufscar.br/handle/ufscar/4314.
Der volle Inhalt der QuelleUniversidade Federal de Sao Carlos
Several studies cite the pollution of stormwater as equivalent and sometimes even superior to those found in the sewers. According to this premise and thinking about environmental issues, especially in the contamination of groundwater and the spread of waterborne diseases, the quality of rainwater has become an important focus of study. This work concerns the monitoring of an infiltration system consisting of grass filter, trench and infiltration trench, built in full scale on the campus of University Federal of São Carlos - UFSCar, located in São Carlos - SP, from the assessment water quality of runoff directly before and after passing through the proposed infiltration system, parallel to monitoring the quality of rain water, through analysis of the physico-chemical and bacteriological established in legislation and international experiences, compared the conditions of the study area, and exploratory data analysis by two chemometric techniques: Principal Component Analysis (PCA) and Hierarchical Cluster Analysis (HCA). According to the analysis of the results variation, especially the quality of atmospheric water and quality of direct runoff results were obtained as concentrations low significantly to parameters Turbidity, Color, ST, STD, Nitrate, Nitrite, Ammonia nitrogen, Sulfate, Chloride, Cadmium, Copper, Lead and Zinc in the water samples analyzed directly from rain, compared with previous studies in the literature and standards and legislation existing about water resources, and the efficiency of the infiltration trench in the removal of Zinc (90,89%), Cooper (88,31%), Electrical Conductivity (31,40%), Ammonial nitrogen (24,32%) and Chloride (5,88%) compared with the predial direct runnof in the channel. With regard to PCA analysis, proves the characteristics between samples according to the conditions of sampling (day, month, place and time) and analysed variables, dividing into groups of samples and contributing to the extraction and interpretation of information unlikely to be viewed directly in the data matrix. The analysis complemented by HCA analysis by PCA.
Diversos estudos citam a poluição das águas pluviais como equivalente e, às vezes, até superior àquelas presentes nos esgotos. De acordo com tal premissa e pensando na problemática ambiental, especialmente na contaminação de águas subterrâneas e disseminação de doenças por veiculação hídrica, a qualidade da água pluvial tornou-se um foco importante de estudo. Este trabalho visa o monitoramento de um sistema de infiltração constituído de filtro de grama, vala e trincheira de infiltração, construído em escala real no campus da Universidade Federal de São Carlos UFSCar, localizado na cidade de São Carlos SP, a partir da avaliação da qualidade da água do escoamento superficial direto predial antes e após passar pelo sistema de infiltração proposto, paralelo ao monitoramento da qualidade da água de chuva, mediante análise de parâmetros físico-químicos e microbiológicos estabelecidos em legislação e em experiências nacionais e internacionais, comparadas às condições da área de estudo, e análise exploratória dos dados por duas técnicas quimiométricas: Análise de Componentes Principais (PCA) e Análise Hierárquica de Agrupamentos (HCA). De acordo com a análise da variação dos resultados obtidos, sobretudo, da qualidade da água atmosférica e da qualidade da água do escoamento superficial direto, obtiveram-se como resultados concentrações sensivelmente menores dos parâmetros Turbidez, Cor, ST, STD, Nitrato, Nitrito, Nitrogênio Amoniacal, Sulfato, Cloreto, Cádmio, Cobre, Chumbo e Zinco analisados nas amostras de água diretamente da chuva, comparando-se com estudos precedentes na literatura e normas e legislações de recursos hídricos vigentes. O sistema filtro-vala-trincheira de infiltração removeu os seguintes parâmetros analisados, comparando-se com a água do escoamento superficial direto predial no canal: Zinco (90,89%), Cobre (88,31%), Condutividade Elétrica (31,40%), Nitrogênio Amoniacal (24,32%) e Cloreto (5,88%). Com relação às análises por PCA, evidenciaram-se as características entre as amostras de acordo com as condições de amostragem (dia, mês, local e tempo) e variáveis analisadas, dividindo em grupos de amostras e contribuindo para a extração e interpretação das informações que dificilmente seriam visualizadas diretamente na matriz de dados. As análises por HCA complementaram as análises por PCA.
Gorski, Jacob J. „Evidence Supporting Treatment Practice Based Delineation of Stormwater Runoff Zones“. PDXScholar, 2013. https://pdxscholar.library.pdx.edu/open_access_etds/1423.
Der volle Inhalt der QuelleRingqvist, Anna. „Utläckage från vattennät – en betydande källa till tillskottsvatten i spillvattennät? : Linjär regressionsanalys av VA-data från svenska kommuner“. Thesis, Uppsala universitet, Avdelningen för systemteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-433773.
Der volle Inhalt der QuelleTaha, Ammar. „Etude expérimentale et numérique de la contribution des eaux infiltrées à la formation des débits des crues en zone méditerranéenne : application à un versant du Real Collobrier“. Université Joseph Fourier (Grenoble), 1995. http://www.theses.fr/1995GRE10052.
Der volle Inhalt der QuelleVengeon, Jean-Marc. „Déformation et rupture des versants en terrain métamorphique anisotrope : apport de l'étude des ruines de Séchilienne“. Université Joseph Fourier (Grenoble), 1998. http://www.theses.fr/1998GRE10232.
Der volle Inhalt der QuelleXu, Shan. „Caractérisation de l’environnement karstique de la grotte de Lascaux par couplage de méthodes géophysique, statistique et géostatistique“. Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0244/document.
Der volle Inhalt der QuelleThe Lascaux cave, one of the most important prehistoric caves in the world, located in Dordogne (24, France) needs particular attention both for itself and for the environment interms of conservation and vulnerability since its discovery. Geophysical methods in particular Electrical Resistivity Tomography (ERT) enable us, in a non-invasive way, to monitor the karsticenvironment.A Time-Lapse monitoring by ERT was carried out next to the cave. Together with analysis of the local effective rainfall (ground water recharge) and the flow in the cave, the monitoringhelped us to identify an area where upstream underground water is probably stored e.g. arecharge zone. There is a large electrical contrast between the surrounding limestone and theprobable recharge zone. Then, a multivariate analysis through the resistivity values allowed usto characterize the model blocks, showing a specific behavior over time, especially the blockswith the lowest electrical resistivity. A prediction model of the flow in relation with the recharge zone succeeded to predict the beginning and the end of flow, even the daily event withextremely high value of flow.In order to visualize the environment in 3D condition, a geostatistical modelling was then applied to the resistivity values. The geostatistical models can emphasize the limit betweenthe limestone promontory and the clayey/sandy formations to the east/west part of the site. In the limestone promontory, the models also showed the possible connection between theanomalous conductive areas that may have a special consequence in this karstic environment.The Time-Lapse monitoring by ERT allows us to understand the karstic structures andrecharge phenomena. The 3D geostatistical modeling showed efficiency for the characterization of the cave environment. Those results can help to provide advices for the cave preservation
Grunberger, O. „Étude géochimique et isotopique de l'infiltration sous climat tropical contrasté : massif du Piton des neiges, île de la Réunion“. Paris 11, 1989. http://elgebar.univ-reunion.fr/login?url=http://thesesenligne.univ.run/H/Orsay_Grunberger.pdf.
Der volle Inhalt der QuelleReunion Island is located in the Indian ocean (21° 7 S, 52 °32 W) in the intertropical zone. Chemical and isotopic natural contents in rain waters, soil waters and groundwaters allow to study the water cycle upon the "Piton des Neighs" massif, which is an inactive strato-volcano. Chemical contents in rain show a marine influence pondered by effects of the relief. Isotopic abundances of 180 and 2H have similar distributions which are strongly disturbed during the tropical hurricanes. These natural variations determine an "input" function and can be found in soils and aquifers. The distribution of the abundances of 180 in soil water in the west part of the island allows to quantify the evaporation rate from the groundwater table at a steady state. At higher altitude infiltration occurs and has also been quantified. Groundwaters chemical analysis show that global salinity is related to the carbonate mineralization from biogenic C02. Cation contents can be related to the geochemistry of weathered lavas. Groundwater flow patterns do not necessary follow the general slope of the volcano. Chemical contents of ground water from costal aquifers not only show marine influence but also a carbonated and sulfated source of mineralization. Carbone and sulfate isotopic contents illustrate the influence of cane sugar cultivation. The mean transit times are probably less than 35 years. All developing managements to come should take into account that western costal aquifers are not protected from pollution
Petitprez, Florent. „Integrated analysis and clinical impact of immune and stromal microenvironments in solid tumors Quantitative analyses of the tumor microenvironment composition and orientation in the era of precision medicine Transcriptomic analysis of the tumor microenvironment to guide prognosis and immunotherapies Tumor microenvironment quantification tool draws a comprehensive map of the tumor microenvironment of non-hematologic human cancers The mMCP-counter method to estimate abundance of tissue-infiltrating immune and stromal cell populations using gene expression in murine samples Immune sub-classes in sarcoma predict survival and immunotherapy response Intra-tumoral tertiary lymphoid structures are associated with a low risk of hepatocellular carcinoma early recurrence Association of IL-36γ with tertiary lymphoid structures and inflammatory immune infiltrates in human colorectal cancer Immune-based identification of cancer patients at high risk of progression Tumor-infiltrating and peripheral blood T-cell immunophenotypes predict early relapse in localized clear cell renal cell carcinoma PD-L1 expression and CD8+ T-cell infiltrate are associated with clinical progression in patients with node-positive prostate cancer Intratumoral classical complement pathway activation promotes cancer progression“. Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCB104.
Der volle Inhalt der QuelleTumors are composed not only of malignant cells but also contain a vast variety of non-malignant cells, notably immune cells forming the tumor microenvironment (TME). The composition of the TME was shown to be associated with clinical outcome for cancer patients, in terms of survival and therapeutic responses. With the relatively recent development of immunotherapies targeting specific elements of the TME, tumor immunology has risen a strong interest and holds a strong therapeutic potential. Several methodologies have been developed to study the composition of the TME with an increased precision. Notably, some methods such as MCP-counter enable the use of the tumor bulk transcriptome to quantify cell populations composing the TME. The methodological aspect of this PhD project consisted in setting up an enhanced version of MCP-counter that can be readily applied to RNA-Seq data, as well as propose an adaptation of the method for mouse models. Using MCP-counter, the TME of large series of tumors can be easily analyzed. The application part of this PhD work consisted of applying MCP-counter to establish an immune-based classification of soft-tissue sarcoma, a rare, aggressive and heterogeneous cancer type. The immune classification notably allowed to identify immune low and high groups, and a group characterized by a strong vasculature. Interestingly, the classification was notably found to be predictive of the patients' response to immunotherapies. It also highlighted an important role of tertiary lymphoid structures (TLS). TLS are lymph-node-like structures composed of T and B cells that form within the tumor or in close proximity. They are a site of formation and maturation of antitumoral immune responses. TLS are raising a growing interest in many malignancies. In most cancer types, a strong infiltration by T cells, in particular CD8+ T cells, is associated with a favorable clinical outcome. However, clear-cell renal cell carcinoma and prostate cancer are exceptions to this general rule. Indeed, in these urological cancers, an increased infiltration by T cells is associated with a decreased patient survival and with earlier relapse and disease progression. In a third part of this thesis, these exceptions are investigated with more details by scrutinizing the TME, and questioning the implication of the complement system. Overall, this thesis presents how the combination of several analysis methods, in silico, in situ and in vivo, can help achieve an extremely precise description of the TME. Knowing accurately what cell populations and what their functional orientation can help guide patients care and improve clinical outcome. Complete description of the TME opens the way towards personalized medicine for cancer patients
Ko, Szu-Yu, und 柯思妤. „Stability Analyses of Reinforced Retaining Wall under Rainfall Infiltration Condition“. Thesis, 2016. http://ndltd.ncl.edu.tw/handle/16703384942881136745.
Der volle Inhalt der Quelle國立中興大學
水土保持學系所
104
Firstly, using the inclinometer monitoring data of a road repair project at Nantou, Taiwan, this study carried out a 3-D numerical simulation to investigate the stabilization mechanism of geogrid reinforcement. Comparing the lateral displacement of geogrid reinforcement from simulation with those from measurement, one can verify the validities of the numerical procedures and material model parameters used in the simulation. Subsequently, a model geogrid reinforcement consists of colluviums was set up for carrying out a series of parametric studies to investigate their effects on the deformation behavior, mechanical properties, and slope stability. In numerical experiments, the numerical variables consist of material and geometry types encompass: geogrid length Ld, geogrid spacing Sv, geogrid configuration, geogrid stiffness, and the angle of reinforcement. Meanwhile, a model geogrid reinforcement consists of colluviums was set up for carrying out a series of rainfall induced seepage analyses and parametric studies on various hydraulic numerical variables to investigate their effects on the degree of saturation S(%), pore water pressure Pwater, and slope stability during rainfall. The numerical variables adopted in parametric studies include: design rainfall pattern, and initial groundwater level (hwo). At last, a model geogrid reinforcement was set up for carrying out a certain rainfall induced seepage analysis to investigate their effects on the degree of saturation S(%), pore water pressure Pwater, and slope stability during rainfall. The numerical variable adopted in parametric studies is drainage configuration. For calibrated and verified simulations, the numerical results of slope stabilized by geogrid reinforcement demonstrate that the lateral displacement shaft from simulations are fairly coincident with those from observations. According to the numerical results of a homogeneous slope stabilized by geogrid reinforcement, following conclusions can be drawn: (1) For a slope with geogrid reinforcement, the FS value increases with the increasing geogrid length (Ld=3.75 4.00 5.00 m). (2) For a slope with geogrid reinforcement, the FS value reduces with the increasing geogrid length (Sv=0.4 0.5 1.0 m). (3) For a slope with geogrid reinforcement, the FS value goes up then down with the increasing distance from toe (Z=0.0→0.5→1.0→1.5 m). In addition, when the distance from toe Z=1.0 m, the FS value will reach the maximun. (4) For a slope with geogrid reinforcement, the FS value reduces with the reducing geogrid stiffness (EA=200→150→100 kN). (5) For a slope with geogrid reinforcement, the FS value increases with the reducing slope degree (=84.3°→73.3°→63.4°). Based on the numerical experiments of rainfall induced seepage analyses for a geogrid reinforcement model, several conclusions are made: (1) For a designated duration of rainfall, the FS value of the slope with geogrid reinforcement is relatively low for a high-intensity rainfall (return period 2 years rainfall return period 20 years rainfall, FS=5.345 2.296). (2) For a specific duration of rainfall, the FS value tends to be lower when the initial groundwater level becomes higher. For example, a high groundwater level hwo=6 m low groundwater level hwo=10 m, the factor of safety FS=3.829→4.841. At last, the result of a certain rainfall induced seepage analysis to investigate drainage configuration shows that the drainage volume will effects the dissipation rate of precipitation. As the saturation increases less with the larger drainage volume, the FS value reduces less. Keywords: geogrid reinforcement, rainfall infiltration, degree of saturation, pore water pressure, compaction, drainage, factor of safety (FS value)
CHANG, KUO-CHING, und 張國欽. „Analyses and Evaluations of Slope Stability Under Rainfall Infiltration Condition“. Thesis, 2005. http://ndltd.ncl.edu.tw/handle/88744634848010734630.
Der volle Inhalt der Quelle國立中興大學
水土保持學系
93
It’s acknowledged that the geological and hydrological conditions are extremely complicated in the engineering design and theoretical analysis. At the meantime, it is almost impossible to evaluate the actual slope stability of landslide during the rainfall merely employing the conventional analysis or simplified method. This study proposed a numerical procedures to encompass the rainfall infiltration and stability calculation in slope analysis which is commonly encountered in the engineering practice. The Li-San Landslide Restoration Project has been carried out at the end of year 2002. However, the relevant analyses are merely restricted in the conventional analyses which frequently consider the groundwater as a hydrostatic types of distribution rather than a varied groundwater table. The infiltration and seepage effect of rainwater are completely ignored in the analysis. Incorporating two dimensional finite element transient seepage analyses with limit equilibrium analysis of Morgentern-Price slice method, this study investigates the infiltration and seepage effects on the slope stability of Li-San Landslide under the precipitation condition resulted from 4 rainfall events during the typhoon season (Toraji, Bilis, Aere and Mindulle Typhoons). In the seepage analysis, the drainage well (W1, W2 and W3) is successfully simulated by an open boundary, which functions as a collection of seepage flow during the rainfall. Eventually, the pore water pressure distribution resulted from the SEEP/W seepage analysis were imported into SLOPE/W slope stability analysis. From the numerical results, the tendency of time-dependent groundwater table variation of monitoring stations B11 and B13 are compared well with those from the measurements. Meanwhile, the calculated factor safety of 4 specific potential sliding sub-surfaces No.1~No.4 along the Y4 profiles at the Southeast zone of Li-San Landslide are also compared with those from the previous studies. Accordingly, the proposed numerical procedures can be verified based on the aforementioned comparisons. Based on the calculation results of 4 Typhoon Events in Li-San Landslide, two sets of Δhw(T)~ T regression curves can be obtained. The curve correlates the rainfall duration T with the groundwater upwelling in Li-San Landslide and which is suggested for the usage of future prediction. Finally, a fictitious slope was designed for the parametric study of influence factor of slope stability. In which , the influence of rainfall intensity I (=5~20mm/hr), slope inclination tanβ (=30~100%) and friction angle of soil stratum (=20~40) on slope stability are systematically inspected and a series of analysis chart were also presented as a reference of engineering practice.
Chein, Shun-Long, und 鄭順隆. „Numerical Simulation of The Mechanism of Rainfall-Infiltration-Seepage and Stability Analyses of Collapsed Land“. Thesis, 2006. http://ndltd.ncl.edu.tw/handle/37645742429828128250.
Der volle Inhalt der Quelle國立中興大學
水土保持學系所
94
To investigate the landslide mechanism and the associated influence factors on the stability of slope-land, this study performed a systematic rainfall induced seepage and slope stability analyses using two dimensional finite element method and limit equilibrium method. After the establishment of numerical model, the rainfall induced seepage analysis was carried out on the Y4 profile of Li-San landslide area. The numerical results were compared with those from measurements to verify the validity of numerical simulation. Subsequently, several types of fictitious slope were designed for the parametric studies to detect the influence scale and the sensitivity of various influence factors on the slope stability. In parametric studies, the influence factors encompass: Topography factors (slope inclination and slope height), Geological factors (effective cohesion, effective friction angle, unit weight of soil stratum, unsaturated suction friction angle and hydraulic conductivity function), Hydrology (rainfall patterns and initial groundwater table) and Geological structure (thickness of colluviums). Incorporating the dispersal of soaking line, seepage of infiltrated rainwater, variation of groundwater table and change of pore water pressure with the slope stability analyses, it is possible to interpret the landslide mechanism of slope-land in a rational manner. In accordance with the calculation results, several conclusions can be drawn from this study: Rainfall induced seepage analyses were performed on the Y4 profile of Li-San landslide area using the Hyetographs of Typhoon Toraji, Bilis, Aere and Mindulle. It was indicated that Typhoon Toraji can give the most coincidence of the calculated groundwater variation with that from the measurement. In addition, the predicted tendency from other three Typhoons also shows a good agreement to a certain extent. To survey the significance of boundary condition on numerical calculations, this study performed a series of rainfall induced seepage analyses using 4 types of seepage boundary at the lateral side of numerical model. It was found that the influence of boundary condition type is minor if the geometry boundary was located at a distance of 3 times of slope height away from the main slope. As a consequence, it can be deduced that for the identical condition, the influence of boundary condition type on the calculation of factor of safety is also negligible. For a slope with steep inclination or large slope height, the wave front of soaking line beneath the slope toe is capable of infiltrating and dispersing into soil stratum from ground surface with a greater depth during the rainfall. Consequently, the soaking line may join the groundwater table together within short rainfall duration. In general, for P1 instrumentation point located at the depth of 2 m below the slope toe, the initial pressure head is approaching to zero from a negative value during rainfall and eventually turns into positive value due to the overlap of soaking line and groundwater table. This also implies the area adjacent to P1 instrumentation point has been converted from unsaturated to saturated state and the suction of unsaturated zone,vanishes entirely and the equivalent shear strength originated from suction, , becomes valid. At the mean time, for P2 and P3 instrumentation points which located at the depth of 2.5 m below the mid-slope surface and at the depth of 3 m below the slope top respectively, the pressure head remain negative and this indicates both points are still situated at the unsaturated zone in between the soaking line and groundwater table. Moreover, based on the aforementioned discussions, it can be deduced that the potential sliding failure surface may initiate at the area adjacent to slope toe instead of the other areas of slope. For the situation which possesses a Fs >1 at the last time step with rainfall duration of tf-1, the overlap zone of soaking line and groundwater table is merely restricted to a relatively small extent nearby the slope toe. Accordingly, the minimum factor of safety, Fsmin(>1), was calculated based on the potential surface sliding through the entire slope. On the contrary, for the situation which possesses a Fs <1 at the first time step with rainfall duration of tf, the overlap zone of soaking line and groundwater table may expand to a certain extent along the up-slope direction and form a saturated zone at the down-slope. Therefore, the failure factor of safety, Fsfailure(<1), was calculated merely for the potential surface sliding through the particular saturated zone. Since the shear strength of unsaturated soil can be expresses by the modified Mohr-Coulomb equation as, it is apparent the increase of relevant strength parameters such as:can promote the stability of slope during rainfall. However, the increase of unit weight of soil stratum,may decrease the stability. In addition, it was found that the variation of hydraulic conductivity function simply shows very tiny effect on the groundwater table during rainfall. The pressure head of soil stratum below the slope surface is mainly affected by the scatter of soaking line whereas the slope stability is dominated by the development of overlap zone of soaking line and groundwater table along the slope surface. According to the distribution profile of volumetric water content of specific instrumentation points, it was observed that the promotion of entire hydraulic conduction function expands the unsaturated zone while the demotion contracts during rainfall. For both rainfall patterns, Typhoon-Rain and Plum-Rain, higher average rainfall intensity leads to shorter rainfall duration required for the formation of soaking line and earlier occurrence of slope instability. For an identical average rainfall intensity of 20 mm/hr, the slope instability occurs earlier in Plum-Rain pattern (tf=5~6 hr) than that in Typhoon-Rain pattern (tf=7~8 hr). This is due to the fact that the difference of input value of rainfall intensity in the initial stage. The rainfall duration required for the overlap of soaking line and groundwater table is shortened as the initial groundwater table is high (hwo value is low). For 9th hr rainfall duration, the overlap zone of soaking line and groundwater table is formed for hwo=1.5 m, the soaking line and groundwater table is joined together for hwo=3.5 m and no overlap occurs for hwo=7 m. The effect of colluviums thickness on the rainfall duration required for the initiation and the infiltration depth of soaking line is insignificant. However, a thick colluviums layer may retard the combination of soaking line and groundwater table. In conclusion, the most influential factor to the slope stability is slope inclination (β) and slope height (H) is succeeded in sequence.
Lalonde, Catherine. „Anomalies synthétiques : analyse de modèles d'infiltration artistique en territoire urbain des années '70 à aujourd'hui, suivie de dix semaines d'infiltration aboutissant à la création d'un parcours dans le Centre-Sud de Montréal“. Mémoire, 2011. http://www.archipel.uqam.ca/4224/1/M12178.pdf.
Der volle Inhalt der Quelle