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Dissertations / Theses on the topic 'Rewetting'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Ilyas, Muhammad. "Rewetting processes during PWR reflood." Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/6378.

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Rewetting of heated surfaces is important in many physical processes and has important technological applications. Understanding of this phenomenon is required in many engineering and scientific fields. It is one of the most crucial phenomena to be considered for the safety analysis of the design basis Loss‐of‐Coolant Accident (LOCA) in light water reactors (Pressurized Water and Boiling Water Reactors). To mitigate the consequences of LOCA, water is fed into the reactor core via an emergency core cooling system; in the PWR, this water is fed to the core via the lower plenum (“bottom refloodin

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2

Mao, Chris Qun. "Local rewetting and distortion of paper." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ62919.pdf.

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3

Pereira, Paulo Manuel Sendim Aires. "Heat transfer in rewetting of hot surfaces." Thesis, Imperial College London, 1998. http://hdl.handle.net/10044/1/7284.

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4

Lee, Sung-Ching. "Annual greenhouse gas budget for a bog ecosystem undergoing restoration by rewetting." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/58985.

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Many peatlands have been drained and harvested for peat mining, which turned those landscapes into carbon (C) emitters. Rewetting of disturbed peatlands facilitates their ecological recovery, and may help them revert to carbon dioxide (CO₂) sinks. However, it may also cause substantial emissions of the powerful greenhouse gas (GHG) methane (CH₄). Our knowledge on year-round measurements of CO₂ and CH₄ fluxes in restored peatlands is currently very limited. This study quantifies C exchanges in a disturbed and rewetted area located in the Burns Bog Ecological Conservancy Area (BBECA) in Delta, B

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5

Engelhardt, Ilonka. "Impact of changing precipitation patterns on the plant-microbial response to rewetting." Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCK017/document.

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La disponibilité en eau exerce un contrôle majeur sur les cycles des nutriments terrestres, à travers ses impacts sur le fonctionnement des plantes et des microorganismes du sol. Les changements de magnitude et de fréquence des épisodes de pluie (c’est-à-dire les régimes de précipitations) prédits par les modèles et associés au changement climatique vont ainsi avoir des conséquences importantes sur le fonctionnement des écosystèmes. Les écosystèmes arides et semi-arides sont particulièrement vulnérables à des changements de régime de précipitations, car ils sont déjà contraints par la disponib

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6

Silva, Ana Beatriz de Albuquerque Morais. "Phosphorous cycling in dry and rewet incubated soils subjected to different fertilization histories." Master's thesis, ISA/UTL, 2011. http://hdl.handle.net/10400.5/3919.

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Mestrado em Engenharia do Ambiente - Instituto Superior de Agronomia<br>Phosphorus continuous application in fertilizers, in quantities superior to those required by plants causes a P buildup in soils, potentially increasing nutrient losses and compromising water quality by eutrophication process. This work was aimed at assessing the effect of DRW cycles, in two soils with different fertilization histories subjected to organic and mineral fertilization, over P availability. Soils were collected from a long-term fertilizer management platform (NW Italy) divided in two plots experiencing since

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7

Henstra, Steven W. "Vegetation responses to ecological restoration (rewetting) of abandoned block-cut peatlands in eastern Québec." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/40829.

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Abandoned block-cut peatlands are typified by an alternating topography of mined trenches and raised baulks. Although these sites re-vegetate densely with native bog species, Sphagnum species characteristic of undisturbed bogs are conspicuously absent and peat accumulation has not recommenced. Ecological restoration of abandoned block-cut peatlands involves blocking remnant drainage ditches, “rewetting” the residual peat body to: 1) re-establish vegetation assemblages dominated by Sphagnum, and 2) re-establish the upper, hydrologically active layer (acrotelm) that characterizes intact peatland

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8

Sjöstrand, Björn. "Dewatering aspects at the forming section of the paper machine : Rewetting and forming fabric structure." Licentiate thesis, Karlstads universitet, Institutionen för ingenjörs- och kemivetenskaper (from 2013), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-47640.

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The underlying motives of the research undertaken here are twofold: to obtain a deeper understanding of the dewatering mechanisms at the forming section of a papermaking machine and to develop numerical models that describe the flow through forming fabrics. More comprehensive knowledge of dewatering in the forming section allows suggestions to be made for improvements that reduce the amount of energy used in the process without affecting the quality of the end product. The objective of this thesis is to answer the following questions: How and why does rewetting occur at the high vacuum sucti

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9

Dinh, Mai-Van [Verfasser], and Egbert [Akademischer Betreuer] Matzner. "Soluble phosphorus in forest soil : Effects of drying and rewetting / Mai-Van Dinh ; Betreuer: Egbert Matzner." Bayreuth : Universität Bayreuth, 2017. http://d-nb.info/1143009843/34.

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10

Gordon, Helen. "Drying and rewetting effects on microbial community composition and nutrient leaching form soils of contrasting management." Thesis, Lancaster University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.533122.

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11

Peacock, Michael Anthony. "The effect of peatland rewetting on gaseous and fluvial carbon losses from a Welsh blanket bog." Thesis, Bangor University, 2013. https://research.bangor.ac.uk/portal/en/theses/the-effect-of-peatland-rewetting-on-gaseous-and-fluvial-carbon-losses-from-a-welsh-blanket-bog(648921f3-152a-43e8-9d13-29f56fb4b965).html.

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12

Pettersson, Emelie. "A study in how rewetting can be reduced in the paper machine with focus on the forming section." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-10827.

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This master thesis provides an overview of the paper machine with focus on the forming section. The forming section is the first part in the paper machine where the paper pulp is injected through a head box. The paper pulp contains about 99.5% of water and 0.5% fiber. The water as content is reduced by vacuum and gravity. The problem to be studied in this project is related to external rewetting. This is water going back to the paper web from the forming fabric after the dewatering zone. The dewatering is based on vacuum slots under the forming fabric. The vacuum slots absorb water from the so

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13

Kwari, J. D. "Effects of straw burning and drying-rewetting cycles on the fertility of some soils of North-East Nigeria." Thesis, University of Aberdeen, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379809.

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The effects of straw burning and drying-rewetting cycles on nutrient availability were studied in an attempt to assess the practical importance of the yearly precropping practice by farmers of burning off excess crop residues and of the seasonal climate of North-East Nigeria. Changes in soil properties resulting from heating three soils up to 700°C and from field burning of straw on three soils were determined. Heating to 250° did not affect soil texture but increased exchangeable NH<sub>4<sup>+</sub></sup>-N, available P, Fe, Mn and phosphate adsorption. A peak of NH<sub>4<sup>+</sub></sup>-N

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14

Mamalis, Dimitrios. "Phase change and complex phenomena in drops and bubbles of pure and binary fluids." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/25477.

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Evaporation, wetting and multiphase flows of drops and bubbles are everyday life phenomena with potential impact in many industrial, biological, medical or engineering applications. The understanding and controlling of the physical and chemical mechanisms governing these phenomena have become of paramount importance. This thesis encompasses three topics: evaporation of sessile droplets of polymer solutions, the role of thermocapillarity on self-rewetting fluid dynamics and migration of bubbles in liquid flows. Firstly, the evaporative behaviour of sessile droplets of aqueous polymer solutions

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15

Harrison-Kirk, T. "The effects of drying and rewetting cycles on carbon and nitrogen dynamics in soils of differing textures and organic matter contents." Lincoln University, 2008. http://hdl.handle.net/10182/656.

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Many researchers have reported differences in soil C and N dynamics between soils of different textures and/or soil organic matter contents. However, it has proven difficult to determine the exact relationships and mechanisms between C and N dynamics and soil texture/SOM. There are few studies that consider how these soil physical and chemical conditions influence the effects of drying and rewetting on the mineralisation of C and N and the microbial transformations that follow. The objectives of this study were: 1) To determine the effects of repeated drying and rewetting cycles on C and N dyn

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16

Mälson, Kalle. "Plant responses after drainage and restoration in rich fens." Doctoral thesis, Uppsala University, Department of Ecology and Evolution, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8882.

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<p>Rich fens are an important, but threatened, habitat type in the boreal landscape. In this thesis I have examined responses of rich fen vascular plants and bryophytes after drainage and restoration. </p><p>The effects of drainage on the rich fen flora were observed in a long time study and the responses were rapid and drastic. During an initial stage a rapid loss of brown mosses was observed, followed by increases of sedges and early successional bryophytes, and later by an expansion of dominants. Initial effects of hydrological restoration showed that rewetting can promote re-establishment

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17

Marques, Adriana. "Estudo do efeito da adição de diésteres em fluidos industriais de origem vegetal e suas propriedades." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/88/88131/tde-06052012-155617/.

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Os óleos vegetais vêm sendo estudados como substitutos aos minerais em várias aplicações industriais, em particular no resfriamento de aços, no processo de tratamento térmico de têmpera. Este trabalho trata do estudo das características de viscosidade e propriedades de resfriamento de óleos vegetais e de formulações feitas a partir desses óleos com diésteres: Bis (2-etilhexil) adipato DOA, Bis (2-etilhexil) sebacato DOS e Diiso Tridecil adipato DITA, nas proporções de 2,5% e 5,0% (m/m). Realizou-se também nos óleos vegetais, sem aditivos, uma avaliação prévia da estabilidade oxidativa feita

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18

Åslund, Peter. "On Suction Box Dewatering Mechanisms." Doctoral thesis, KTH, Fiber- och polymerteknik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4780.

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In previous studies on suction box dewatering, three mechanisms were identified that determine the dry content of a web, viz. web compression, displacement of water by air and rewetting. In the present work, the relative importance of the three mechanisms was investigated through direct measurement of the web deformation, the dry content changes during and after the suction pulse, the air flow through the fibre network and the saturation of the web after the suction pulse. Suction pressure, suction time and rewetting time were varied. The experiments were done with chemical and mechanical pulp

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19

Schwieger, Sarah [Verfasser], Jürgen [Akademischer Betreuer] Kreyling, Gesche [Akademischer Betreuer] Blume-Werry, Jürgen [Gutachter] Kreyling, Vicky [Gutachter] Temperton, and Scott [Gutachter] Wilson. "Invisible to the eye - Root dynamics in temperate minerotrophic peatlands under drainage and rewetting / Sarah Schwieger ; Gutachter: Jürgen Kreyling, Vicky Temperton, Scott Wilson ; Jürgen Kreyling, Gesche Blume-Werry." Greifswald : Universität Greifswald, 2021. http://d-nb.info/123669368X/34.

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20

Maigrat, Guillaume. "Caractérisation expérimentale du remouillage des aciers." Thesis, Université de Lorraine, 2016. http://www.theses.fr/2016LORR0098/document.

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Sur la table de sortie d’un laminoir à chaud, le refroidissement des bandes d’acier est principalement assuré par des rampes de jets d’eau gravitaires qui vont impacter directement la surface supérieure de la bande en défilement. La température de la bande est initialement entre 800 et 900 °C et on cherche à la refroidir à des températures nettement inférieures mais précises avant son bobinage, cette température allant de la température ambiante à 700 °C suivant les propriétés voulues pour l’acier. Ce refroidissement assuré par les rampes de jets est transitoire et la vitesse de refroidissemen

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21

Tzevelecos, Wassilis. "Contribution to Heat and Mass Transfer for Space Experiments." Doctoral thesis, Universite Libre de Bruxelles, 2018. https://dipot.ulb.ac.be/dspace/bitstream/2013/269864/6/contratWT.pdf.

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This manuscript has been realized in the frame of SELENE experiment research activities. SELENE is the ac-ronym of Self-rewetting fluids for ENErgy management and consists of a space project aiming to investigate heat and mass transfer phenomena in mono-groove configuration with self-rewetting fluids (SRFs). Self-rewetting fluids are mixture showing an anomalous trend of surface tension with temperature, an inversion of the surface tension slope after certain temperature. As consequence, when the minimum in surface ten-sion is crossed, surface tension gradient at the meniscus interface pulls t

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22

Velty, Silke. "Einfluss von Wiedervernässungsmaßnahmen auf den Stoffhaushalt degradierter Niedermoore." Doctoral thesis, Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät, 2008. http://dx.doi.org/10.18452/15752.

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Zur Einschätzung der Auswirkungen einer Wiedervernässungsmaßnahme auf den Stoffhaushalt eines degradierten Niedermoores wurde ein ehemals entwässertes und seit 1996 wieder vernässtes ca. 10 Hektar großes Areal im Randow-Welse-Bruch im nordöstlichen Brandenburg über mehrere Jahre untersucht. Stoffkreisläufe wurden vor allem in Abhängigkeit der sich durch die Wiedervernässung ändernden Redoxbedingungen modifiziert. Obwohl Phosphor, ein die Eutrophierung auslösendes Element, selbst direkt nicht durch einen Wechsel von aeroben zu anaeroben Bedingungen durch die Wiedervernässung beeinflusst wird,

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LIMA, RITA de C. F. de. "Comportamento termoidraulico de vareta aquecida eletricamente durante transitorio de fluxo critico de calor." reponame:Repositório Institucional do IPEN, 1997. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10640.

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Made available in DSpace on 2014-10-09T12:42:40Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T13:57:16Z (GMT). No. of bitstreams: 1 05031.pdf: 4962096 bytes, checksum: 39c12c06c0063abb20c1c82005ecef33 (MD5)<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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24

Bejarano, Roberto Villa. "An Investigation Into| I) Active Flow Control for Cold-Start Performance Enhancement of a Pump-Assisted, Capillary-Driven, Two-Phase Cooling Loop II) Surface Tension of n-Pentanol + Water, a Self-Rewetting Working Fluid, From 25 ?C to 85 ?C." Thesis, University of Nevada, Reno, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1565813.

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<p> Cold-start performance enhancement of a pump-assisted, capillary-driven, two-phase cooling loop was attained using proportional integral and fuzzy logic controls to manage the boiling condition inside the evaporator. The surface tension of aqueous solutions of n-Pentanol, a self-rewetting fluid, was also investigated for enhancing heat transfer performance of capillary driven (passive) thermal devices was also studied. A proportional-integral control algorithm was used to regulate the boiling condition (from pool boiling to thin-film boiling) and backpressure in the evaporator during cold-

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Rebhann, Marco Frank. "Bewirtschaftung von Niedermooren in der gemäßigten Klimazone: Treibhausgasemissionen und Rentabilität." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19334.

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Niedermoore sind durch Grundwasser beeinflusste Standorte, in denen Torf gebildet wird oder oberflächig ansteht. Sie emittieren durch mikrobiologische Prozesse Treibhausgase (THG). Wird der Grundwasserstand gesenkt, steigen Kohlendioxid und Lachgas Emissionen, während bei einer Anhebung vermehrt Methan emittiert wird. Weltweit wird davon ausgegangen, dass Moore 5 % der anthropogen verursachten Emissionen verursachen. Um THG-Emissionen entgegenzuwirken, wird die Anhebung des Grundwasserstandes diskutiert. Dies führt durch eingeschränkte Befahrbarkeit und geringeres Kulturartenspektrum zu einer

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Gu, Sen. "Release of dissolved and colloidal phosphorus from riparian wetlands : a field and laboratory assessment of the mechanisms and controlling factors." Thesis, Rennes 1, 2017. http://www.theses.fr/2017REN1S063/document.

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Le phosphore (P) est un nutriment essentiel dans le contrôle de l'eutrophisation des eaux de surface. La majorité du P causant cette eutrophisation dans les pays occidentaux est aujourd'hui issu des sols agricoles, ce qui explique pourquoi les recherches actuelles sur l'eutrophisation se focalisent sur la compréhension des mécanismes par lequel le P est relargué de ces sols. Dans cette thèse, nous étudions ces mécanismes en nous focalisant sur la fraction dissoute (DP) du P, fraction la plus menaçante du point de vue de l'eutrophisation. Une double approche a été utilisée, combinant le suivi d

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27

Zaaroura, Ibrahim. "Amélioration du transfert de chaleur et de masse à l'aide de nanofluides auto-réhumidifiants." Thesis, Valenciennes, Université Polytechnique Hauts-de-France, 2020. http://www.theses.fr/2020UPHF0024.

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La gestion thermique est actuellement un enjeu majeur dans de nombreux secteurs industriels. Les dispositifs de transfert de chaleur (comme les caloducs) sont des systèmes intégrés qui utilisent des modes de transfert par convection, évaporation et condensation. L'efficacité de l'échange thermique peut être améliorée en utilisant une nouvelle méthode de nanotechnologie connue sous le nom de nanofluides. Les nanofluides sont des suspensions de particules nanométriques (de 2 à 100 nm) dans les fluides. Cette amélioration est due à l'augmentation significative de la conductivité effective dans la

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Kheir, Maya. "Fonctionnement des sols méditerranéens sous changement climatique : effet de la préexposition au stress, de la mixité des litières et de l'identité de l'espèce végétale." Thesis, Aix-Marseille, 2020. http://theses.univ-amu.fr.lama.univ-amu.fr/200710_KHEIR_495pzb687n410mxugdf923oaivtm_TH.pdf.

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Ce travail se situe dans un contexte du changement climatique. L’objectif est d’explorer le fonctionnement des communautés microbiennes de litières végétales dépendant des contrastes climatiques (sub-humide vs semi-aride) Nord/Sud de la Méditerranée mais aussi selon le contexte côtier/continental,et d’évaluer leur réponse au stress d'aridification en considérant les effets i) du type de litière (identité de l’espèce végétale et mixité) et ii) de la préexposition au stress intrinsèques des milieux côtiers. Le stress d’aridité a été appliqué en laboratoire (cycles de séchage/réhumectation) et in

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Nguyen, Ngoc diep. "Characterization and contribution of colloidal fraction in the mobility and bioavailability of sedimentary phosphorus." Thesis, Limoges, 2020. http://aurore.unilim.fr/theses/nxfile/default/9f8fcb76-5d28-468c-8289-23bd366f1bb7/blobholder:0/2020LIMO0078.pdf.

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Le relargage de phosphore sédimentaire constitue une source interne de nutriments dans les eaux conduisant à l’eutrophisation des milieux aquatiques, en particulier des retenues. Les connaissances actuelles concernant le relargage du P sédimentaire ne tiennent pas compte de la fraction colloïdale, qui est pourtant considérée comme une importante phase porteuse de P, très mobile et potentiellement biodisponible. Cette thèse souligne le rôle majeur des colloïdes sédimentaires vis-à-vis de leur teneur en phosphore ainsi que leur fort potentiel à être mobilisé dans l’eau. Il a été démontré que les

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Scheiff, Valentin. "Etude expérimentale et modélisation du transfert de chaleur de l'ébullition transitoire." Thesis, Toulouse, INPT, 2018. http://www.theses.fr/2018INPT0145/document.

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L’étude de l’ébullition transitoire est un enjeu important pour la sureté nucléaire. Un tel phénomène peut se produire lors d’un accident de type RIA (Reactivity Initiated Accident)dans un réacteur nucléaire où le pic de puissance au niveau d’un crayon de combustible peut déclencher une ébullition transitoire conduisant à une forte augmentation de la température de la gaine et à un risque de rupture. Plusieurs études en conditions réacteurs ont permis d’obtenir des courbes d’ébullition transitoires mais la modélisation qui en découle manque encore de fiabilité. Dans le cadre d’une collaboratio

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Meyer, Ann-Carolin. "Physiologische Untersuchungen am Stamm und im Kronenraum eines Fichtenaltbestandes nach experimenteller Manipulation des Wasser- und Ionenhaushaltes (Dachprojekt Solling)." Doctoral thesis, [S.l. : s.n.], 2001. http://webdoc.sub.gwdg.de/diss/2002/meyer/meyer.pdf.

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Shatadal, Pankaj. "Thin-layer rewetting rates of canola (Brassica campestris L.)." 2009. http://hdl.handle.net/1993/3603.

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Thin-layer rewetting tests were conducted for seeds of canola (Brassica campestris L.) in the temperature range of 7.5*C to 30.0*C at two relative humidities (80 and 90%) using a thin-layer wetting unit. Separate tests were done at 5.0, 7.0 and 10.0% initial moisture contents of seeds and 0.10, 0.25, and 0.43 m/s air velocities while the air was maintained at 30*C and 90% relative humidity. In the tests, a thin-layer (one to two kernels thick) of canola was held in the vertical plane and the conditioned air was passed through the layer, thus fully exposing the thin-layer of canola to the air.

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Lin, Wei-Jhih, and 林威志. "The Application of Self-Rewetting Fluids on Loop Heat Pipe." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/95945667975312908438.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>101<br>The objective of this study is the application of self-rewetting fluid as the working fluid on loop heat pipe (LHP), with sintered copper as the chosen capillary structure material; this study also investigates the effect of using different components and concentrations of self-rewetting fluid as well as compares their heat transfer　performances with that of water. Previous studies have show that using self-rewetting fluid as working fluid can enhance the heat transfer mechanisms of pool boiling,traditional heat pipe, and wickless heat pipe. Compared with us

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34

Xie, Stella Xiao Min. "Roughening due to inkjet rewetting: Effect of paper treatment and composition." 2006. http://link.library.utoronto.ca/eir/EIRdetail.cfm?Resources__ID=442004&T=F.

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Chu, Mao-Long, and 朱茂榕. "Heat Transfer Enhancement of Loop Heat Pipe with Self-Rewetting fluid." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/62422980327924299494.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>102<br>The objective of this study is the application of self-rewetting fluid as the working fluid on loop heat pipe (LHP), with sintered copper as the chosen capillary structure material; this study also investigates the effect of using different contents and concentrations of self-rewetting fluid on heat transfer performances of LHP as well as compares the results with those from using water as working fluid. Previous studies have shown that using self-rewetting fluid as working fluid can enhance the heat transfer mechanisms of pool boiling, traditional heat pipes

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Cecere, Anselmo. "A study on self-rewetting fluids for heat transfer in microgravity." Tesi di dottorato, 2009. http://www.fedoa.unina.it/3829/1/Cecere_Anselmo.pdf.

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In a number of water alcohols solutions the surface tension is an increasing function of temperature. Such mixtures are generally referred as self-rewetting fluids because convection driven by a reverse Marangoni effect is direct from cold to hot region along liquid-vapour interface. Within two phase heat transfer device, like heat pipes, liquid condensed is spontaneously driven to the hot evaporator improving the thermal performances and increasing the maximum heat flux. The research activities focused on numerical simulation and experimental laboratory for thermal characterization of heat pi

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Lin, Wei-Jhih, and 林煒智. "Study of Self-Rewetting Fluid Applied to PTFE Wick of Loop Heat Pipe." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/23665625930080743052.

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碩士<br>中華科技大學<br>航空機械系飛機系統工程碩士班<br>103<br>This study applied butanol aqueous solution to form self-rewetting fluid to LHP with a PTFE wick. Porous PTFE structure advantages including low sintering temperature and resistant to oxidation; however, due to PTFE’s hydrophobic nature, with water as working fluid, for example, it has been observed that PTFE cannot effectively pump the working fluid by capillary action. In this paper, self-rewetting fluid (butanol aqueous solution) was used to address the hydrophobic nature of PTFE, allowing the working fluid to successfully flow through the PTFE wic

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Butterly, Clayton Robert. "Drying/rewetting cycles in southern Australian agricultural soils: effects on turnover of soil phosphorus, carbon and the microbial biomass." 2008. http://hdl.handle.net/2440/48167.

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Phosphorus (P) limitations to agricultural productivity commonly occur in Australian soils and have largely been overcome by the use of inorganic fertilisers. However, studies have shown that most of the P taken up by plants is from native P pools. The turnover of P and native soil organic matter may be strongly affected by drying and rewetting (DRW). Rewetting dry soil results in a pulse of respiration activity and available nutrients. In Mediterranean-type climates surface soils naturally undergo recurrent DRW cycles. In southern Australia, soils experience DRW due to erratic rainfall within

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Hour, Bor Kae, and 侯博凱. "A Study on the Thermal-Fluid Phenomenoa of Rewetting along a F uel Rod." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/31438893204012959644.

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Asota, Celestine Ngozi. "Effects of repeated rewetting and drying on breakage and moisture desorption characteristics of soybeans." 1987. http://catalog.hathitrust.org/api/volumes/oclc/17860661.html.

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Thesis (Ph. D.)--University of Wisconsin--Madison, 1987.<br>Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 220-245).

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Chia-Hsuan, Lin, and 林家璿. "On the performance analysis of using self-rewetting fluid in intermittent spray cooling system." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/kygu89.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>106<br>In this study, we utilize the self-rewetting fluid in an intermittent spray system and study the effects of pulsed duration and duty cycle on the heat transfer mechanism and the cooling capacity. Compared to water, using the self-rewetting fluid can successfully induced inverse Marangoni convection and proven to prolong the cooling time within a cycle. This leads to a lower fluid consumption because comparable heat transfer rate can be delivered by spraying the self-rewetting fluid at much lower frequency. For a given duty cycle, increasing the pulsed duratio

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Chou, Ta-Li, and 周大立. "Heat Transfer Enhancement of Loop Heat Pipe with Metal and Polymer Capillary Structure using Self-Rewetting Fluid." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/23095570107961268676.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>104<br>The objective of this study is the application of self-rewetting fluid as the working fluid on loop heat pipe (LHP), with nickel and teflon(PTFE) as the capillary structure materials respectively. Self-rewetting fluids, generally the dilute aqueous solutions of high carbon alcohols(number of carbon atoms ≥ 4), shows not only better wettability compared with pure water but also a special thermophysical effect that the surface tension increases with increasing temperature. Since the Marangoni effect induces a flow from liquid with lower surface tension to the

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YEN, SHIH-HSUAN, and 顏士軒. "Study of Self-Rewetting Fluid Applied to PTFE Wick structure of Loop Heat Pipe with flat evaporator." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/00634478782462936917.

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碩士<br>中華科技大學<br>飛機系統工程研究所<br>104<br>This study investigated the application of self-rewetting ﬂuid to Nickel and PTFE wick structure of Loop Heat Pipe with flat evaporators (FLHP) and its effect on the heat transfer performance of FLHP. PTFE wick structure can prevent FLHP heat leakage problem, however, PTFE material with strong hydrophobic nature, cannot use the water as the working fluid. Therefore, this study attempts to use Self-rewetting fluid's good wettability to overcome the PTFE wick's hydrophobicity. At a certain temperature, a self-rewetting ﬂuid, contrary to common newtonian ﬂuids,

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Shi, Andong. "The effect of residue mixing, clay content and drying and rewetting on soil respiration and microbial biomass." Thesis, 2015. http://hdl.handle.net/2440/93521.

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Organic matter decomposition in terrestrial system is of vital importance for nutrient cycling and ecosystem function. Soil microorganisms are the key drivers of decomposition which regulates the availability of inorganic nutrients through immobilisation and mineralisation. The size of the soil organic C pool is twice that of C in the atmosphere and more than twice of that in vegetation. Thus, organic matter decomposition in soil greatly influences the C flux between soil and the atmosphere. Therefore understanding factors influencing organic matter decomposition is important for climate chang

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Hung, Chia-Yin, and 洪嘉吟. "Exploring the cooling capability of self-rewetting fluid deposited on the cold end of a copper strip with horizontal temperature gradient." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/9xmnz8.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>107<br>This study aims at applying the inverse Marangoni convection to cooling augmentation of a super-hydrophilic copper strip with a horizontal temperature gradient. The self-rewetting fluid used herein is the 0.2%wt 1-heptanol dilute aqueous solution and there are two different supplied quantity: 1 ml and 1.5 ml. The horizontal temperature gradient is varied by adjusting the inlet temperature of coolant and the initial temperature of the hot end. We find that the inverse Marangoni convection is able to cool the hot end effectively and result in higher accumulated

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Ketcheson, Scott James. "An evaluation of the water balance and moisture dynamics within Sphagnum mosses following the restoration (rewetting) of an abandoned block-cut bog." Thesis, 2011. http://hdl.handle.net/10012/6328.

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Artificial drainage networks established throughout peatlands during the peat extraction process often remain active following abandonment, maintaining a water table relatively far from the surface of the peat and hindering the survival and reestablishment of Sphagnum mosses. Since cutover peatlands are characterized by low (negative) soil water pressures, sufficient internal water storage and balanced water fluxes are critical for the physiological function of spontaneously regenerated Sphagnum mosses. The relative importance of water exchanges between spontaneously regenerated Sphagnum moss

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Malloy, Shannon. "Fen restoration on a bog cut down to sedge peat: A hydrological assessment of rewetting and the impact of a subsurface gyttja layer." Thesis, 2013. http://hdl.handle.net/10012/7355.

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Vacuum harvested peatlands do not easily regain their hydrological function after peat production therefore restoration is required to create hydrological conditions appropriate for the growth of peat producing fen plant species. Peat extraction at Bic-Saint-Fabien peatland by the block-cut method began in 1946, converted to vacuum harvesting in the early 1970’s and ceased in 2000. After exploitation, about 0.04-1 m of residual minerotrophic sedge peat remained; therefore Bic-Saint-Fabien was restored as a fen. Research occurred in 2008-2011 and restoration began fall 2009 so we have two pre-r

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Kozub, Łukasz. "Wpływ restytucji torfowiska niskiego metodą usuwania warstwy murszu na warunki siedliskowe, produktywność i bilans gazów cieplarnianych." Doctoral thesis, 2016. https://depotuw.ceon.pl/handle/item/1819.

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Streszczenie Naturalne, niezaburzone antropogenicznie torfowiska pełnią niezwykle istotne funkcje. Są to, jedne z największych globalnych magazynów węgla, a w skali zlewni stanowią ważne miejsce retencji pierwiastków biogennych. Typowe dla torfowisk stałe wysokie uwodnienie oraz wycofywanie z obiegu pierwiastków biogennych wywołują w zbiorowisku roślinnym stresy anoksji oraz niskiej żyzności. Czynniki te ograniczają produkcję pierwotną i zwiększają szanse przetrwana na torfowiskach gatunków roślin słabych konkurencyjnie, często zagrożonych. Równocześnie torfowiska należą dziś do ekosystemów na

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Knorr, Klaus-Holger [Verfasser]. "Dynamics of soil processes under extreme meteorological boundary conditions : response of below-ground carbon, sulfur, and iron cycling in fen soils ; effects of experimental drought and subsequent rewetting on internal carbon, sulfur, iron, and arsenic turnover in a soil from a northern temperate fen / vorgelegt von Klaus-Holger Knorr." 2009. http://d-nb.info/992484421/34.

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