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Dissertations / Theses on the topic 'Phosphating'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Darmarajan, Suresh. "Chemistry of in-situ phosphating coating /." [St. Lucia, Qld.], 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18553.pdf.

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2

Akhtar, Anisa Shera. "Surface science studies of conversion coatings on 2024-T3 aluminum alloy." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/1713.

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The research in this thesis aims to develop new mechanistic knowledge for coating processes at 2024-Al alloy surfaces, ultimately to aid the design of new protective coatings. Coatings formed by phosphating, chromating, and permanganating were characterized especially by scanning Auger microscopy (SAM), X-ray photoelectron spectroscopy, and scanning electron microscopy . The objective was to learn about growth (nm level) as a function of time for different coating baths, as well as a function of lateral position across the different surface microstructural regions, specifically on the μm-sized

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3

Wierre, Christophe. "Optimisation des traitements de surface non réactifs pour la forge à froid." Valenciennes, 1996. https://ged.uphf.fr/nuxeo/site/esupversions/e4d28904-bb12-46e0-becc-c1a11b73b6f4.

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La compréhension des mécanismes de frottement et de grippage en forge à froid nécessite la mise en œuvre d'essais de simulation visant à caractériser objectivement les surfaces lubrifiées. À cet effet une méthodologie de caractérisation des lubrifiants solides basée sur l'exploitation d'un essai composite étirage-grippage a été développée au laboratoire d'automatique et de mécanique industrielles et humaines. Elle permet de reproduire certaines contraintes thermomécaniques locales subies par les surfaces lubrifiées au cours de la mise en forme des pièces et au cours d'actions de contact intens

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4

Yamaguti, Rosele Correia de Lima. "Avaliação de alternativas ao uso de níquel e cromatos no processo de fosfatização tricatiônico aplicado ao aço carbono." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/85/85134/tde-24102012-085907/.

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Camadas de fosfato tricatiônico são largamente utilizadas na indústria automotiva como proteção contra corrosão e adesão de revestimentos orgânicos ao substrato de aço. A combinação do fosfato e revestimento proporciona à superfície metálica, alta durabilidade à corrosão. Porém a camada cristalina obtida com este tipo de fosfato apresenta poros entre os cristais, expondo o substrato metálico ao ambiente corrosivo, tornando importante um tratamento de passivação após fosfatização. O tratamento comercial de fosfatização tricatiônico e subsequente passivação envolvem o uso de elementos tóxicos, t

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5

Adjerid, Smaïl. "Contribution à l'identification des conditions optimales de sollicitation des revêtements phosphatés-lubrifiés." Valenciennes, 1995. https://ged.uphf.fr/nuxeo/site/esupversions/169e5879-2295-41fe-ad0e-9f45341fb297.

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Les revêtements de phosphate sont encore largement utilisés dans diverses applications du secteur de la mécanique. Cependant, concernant la lubrification et notamment, le domaine de la mise en forme à froid, ces revêtements peuvent présenter des caractéristiques physico-chimiques souvent aléatoires et pas toujours fiables. En effet, les performances tribologiques des couches phosphatées dépendent d'un très grand nombre de paramètres liés à l'élaboration du revêtement lui-même ou encore à ses conditions de sollicitation. L’étude réalisée a consisté à évaluer l'incidence de certains paramètres d

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6

Mancin, Gleber Rodrigo. "Manejo de modos e fontes de fósforo na produção e qualidade da cana planta (Saccharum spp.)." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/74/74131/tde-25052018-152500/.

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Sendo a cana-de-açúcar uma das culturas mais importantes hoje no contexto de agroindústria, sua expansão cresce de acordo com o aumento de consumo de açúcar e etanol no Brasil e no mundo. Muitas vezes, estas expansões são realizadas em área de baixa fertilidade e/ou degradadas, tendo pouca disponibilidade de fósforo. De maneira geral, os solos no Brasil apresentam baixos teores de fósforo. A cultura da cana-de-açúcar considerada semi perene, a aplicação principal de fósforo é realizada na reforma ou implantação do canavial, como fosfatagem e/ou localizado dentro do sulco do plantio. O fósforo

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7

Rombeaux, Philippe. "Etude de la phosphatation cristalline au zinc : caracterisation et comportement électrochimique des dépôts." Châtenay-Malabry, Ecole centrale de Paris, 1988. http://www.theses.fr/1988ECAP0070.

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8

Hosseini, Vafa Babak. "IMPLEMENTATION OF ”MATRIX DATA CODE’’ MARKING ON GEAR KITS : Marking and reading of the marked data on the pinion and crown wheel after hardening and phosphating processes." Thesis, Högskolan i Halmstad, Maskinteknisk produktframtagning (MTEK), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-28775.

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This thesis has been performed in cooperation with the companyMeritorHVSABin order to implement amatrix data codes marked on gear kits for reducing potentialhuman errorwhen inputtingthe information inside thecompany's business system. Asustainablemarkingis the basis forproducttraceability to followa product'swayfrom theraw materialto finished product so that they can betracedthroughouttheir life cycle. To investigate thecurrent technology, two different marking andreadingmethods were tested: a laser and dot peen method. It has been found that the dot peen method was more suitable for Meritorto

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9

Brzuchańská, Anna. "Optimalizace metod hodnocení fosfátovacích lázní." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-216366.

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This work deals with phosphating technology of steel. In theoretical part are summarized facts about conventional phosphating process, including steel surfaces pretreatment. In the next chapter the latest contemporary technology of phosphating is discussed, i.e. electrolytic phosphating. This chapter contains principles and characteristics of this technique. Than follow comparisons of electrolytic phosphating and conventional process, concerning economical and ecological aspects. In experimental part is firstly stated nowaday situation of process analyses of phosphating bath for electrolytic p

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10

JAZBINSEK, LUIZ A. R. "Investigação de tratamentos alternativos de fosfatização para eliminação do níquel e cromo hexavalente." reponame:Repositório Institucional do IPEN, 2014. http://repositorio.ipen.br:8080/xmlui/handle/123456789/23490.

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Submitted by Maria Eneide de Souza Araujo (mearaujo@ipen.br) on 2015-02-20T18:11:07Z No. of bitstreams: 0<br>Made available in DSpace on 2015-02-20T18:11:07Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado em Tecnologia Nuclear)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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11

SALIBA, SILVA ADONIS M. "Desenvolvimento de um processo de fosfatacao para protecao anticorrosiva em imas NdFeb." reponame:Repositório Institucional do IPEN, 2001. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10975.

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Made available in DSpace on 2014-10-09T12:46:20Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:01:32Z (GMT). No. of bitstreams: 1 07616.pdf: 6459739 bytes, checksum: 6032bfb27763f826fa1eef8e9dacd71f (MD5)<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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12

Bruni, Graziella Pinheiro. "Fosfatação e ligação cruzada de amido de trigo e suas aplicações em filmes compósitos usando poli(óxido de etileno)." Universidade Federal de Pelotas, 2016. http://repositorio.ufpel.edu.br:8080/handle/prefix/3239.

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Submitted by Gabriela Lopes (gmachadolopesufpel@gmail.com) on 2017-03-14T15:42:14Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertação Graziella Pinheiro Bruni.pdf: 2435737 bytes, checksum: dd5dfba33efd7d9048f7888720783b4a (MD5)<br>Approved for entry into archive by Aline Batista (alinehb.ufpel@gmail.com) on 2017-03-17T21:44:15Z (GMT) No. of bitstreams: 2 Dissertação Graziella Pinheiro Bruni.pdf: 2435737 bytes, checksum: dd5dfba33efd7d9048f7888720783b4a (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Made avail

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13

Guérin, Jean-Dominique. "Analyse des essais de compression et de traction des aciers après solidification in situ et des essais d'indentation des aciers phosphatés." Valenciennes, 1993. https://ged.uphf.fr/nuxeo/site/esupversions/b769f69b-4777-454d-94ad-c3bac6b6fab1.

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La mise en forme à chaud et à froid des aciers est étudiée avec deux types d'expérimentations : les essais à hautes températures des aciers juste après leur solidification et les essais à température ambiante des aciers phosphates. Le premier type d'expérimentation consiste à mener un essai de compression ou de traction à vitesse de traverse constante sur des éprouvettes, cylindriques pour l'essai de compression et axisymétriques à entaille circulaire pour l'essai de traction, en acier solidifie in situ. Il s'agit a partir des données expérimentales de caractériser le comportement de l'acier s

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14

Glaum, Robert. "Neue Untersuchungen an wasserfreien Phosphaten der Übergangsmetalle." [S.l. : s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=969089597.

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15

Orober, Miroslav. "Mechanismen der Resistenzinduktion nach Blattbehandlungen mit Phosphaten." [S.l. : s.n.], 2002. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB9818605.

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16

Ševčíková, Barbora. "Fosfátové konverzní povlaky." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2012. http://www.nusl.cz/ntk/nusl-216889.

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The main objective of the master’s thesis is to study the influence of phosphate coating structure on the mechanical properties of screw connection. The theoretical part describes the conventional phosphating process and it is followed by an analysis of current knowledge of phosphating technology. Experiments are carried out on screw valves mounted to a high pressure diesel pump by Bosch Diesel s.r.o., made of unalloyed carbon steel. To investigate the effect of the structure on the connection sealing, twelve kinds of phosphate coatings varying in one process parameter were prepared. The monit

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17

Jacquemin, D. (Damien). "The Phosphatic chalk of the Mons Basin, Belgium:petrography and geochemistry of the Ciply Phosphatic Chalk and implications on its genesis." Master's thesis, University of Oulu, 2018. http://urn.fi/URN:NBN:fi:oulu-201805101771.

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The Ciply Phosphatic Chalk (CPC) has been exploited for its enrichment in phosphorus in the early part of the twentieth century to produce fertilisers. Regained interests stimulated new research to characterise the potential for rare earth elements endowment and propose a genetic model for the formation of this phosphate deposit. This work studied the CPC using scanning electron microscopy, X-ray diffraction, cathodoluminescence and geochemical analyses. New insights into the formation of the deposits have been obtained regarding the mode of formation of the deposit. First, the deposit clearly

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18

Ramnarine, Ravindra. "Predicting phosphatic soil distribution in Alachua County, Florida." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0001225.

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19

Jardy, Alain. "Equilibres en solution des diphosphates metalliques : depot et proprietes de films de diphosphates en protection contre la corrosion." Paris 6, 1987. http://www.theses.fr/1987PA066107.

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Determination des constantes des complexes formes entre les ions diphosphate et differents cations metalliques permettant un choix raisonne des conditions optimales de formation d'un depot adherent de diphosphate metallique pour la protection contre la corrosion. Application a la protection d'un acier galvanise au contact des eaux de distribution

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20

Fleming, Nigel Kevin. "Polyphosphates and microbial uptake of phosphorus : studies with soil and solution culture." Title page, contents and summary only, 1992. http://web4.library.adelaide.edu.au/theses/09A/09af598.pdf.

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21

Dudaczek, Jürgen. "Oktapeptide als neue Organokatalysatoren zur Hydrolyse von Phosphaten und Estern." kostenfrei, 2009. http://www.opus-bayern.de/uni-wuerzburg/volltexte/2009/3517/.

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22

Raguž, Branimir [Verfasser]. "Synthese und Charakterisierung von Lithium-metall(I)-phosphaten / Branimir Raguž." Bonn : Universitäts- und Landesbibliothek Bonn, 2020. http://d-nb.info/1224270630/34.

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23

Wolfshohl, Anke [Verfasser]. "Untersuchungen zur Synthese nanoskaliger Lithium-chrom(III)-phosphate und zur Deinterkalation von Silber-chrom(III)-phosphaten mit einer Ergänzung zur Synthese und Charakterisierung von Osmium(IV)-phosphaten / Anke Wolfshohl." Bonn : Universitäts- und Landesbibliothek Bonn, 2019. http://d-nb.info/1188732129/34.

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24

Hall, Jonathan Trent Savrda Charles. "Phosphatic concretions and ichnofossil preservation in a marine Lagerstätte, Ripley Formation, Central Alabama." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Spring/master's/HALL_JONATHAN_18.pdf.

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25

Maass, Kai. "Neues von quaternären Phosphaten der zweiwertigen 3d-Übergangsmetalle Darstellung, Kristallstrukturen und spektroskopische Charakterisierung von quaternären Chrom(II)-phosphaten und isotypen Verbindungen mit einer ausführlichen Behandlung der Farbe von Nickel(II)-oxoverbindungen /." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=965262707.

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26

Mkpong, Offiong Etim. "The effects of variable moisture levels on extractable Bray-l P, Bray-l Al, Bray-l Fe, Bray-l Mn : fertilizer P recommendation based on quicktest technique /." The Ohio State University, 1987. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487329662144707.

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27

Smith, Leslie Owen 1960. "Effect of broadcast phosphorus on alfalfa yield and quality." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/558068.

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28

Melland, Alice Rowena. "Pathways and processes of phosphorus loss from pastures grazed by sheep /." Connect to thesis, 2003. http://eprints.unimelb.edu.au/archive/00002204.

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Thesis (Ph.D.)--University of Melbourne, School of Agriculture and Food Systems,Institute of Land and Food Resources, 2004.<br>Typescript (photocopy). Includes bibliographical references (leaves 249-282).

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29

Lenes, Jason M. "Saharan dust and phosphatic fidelity : a three dimensional biogeochemical model of Trichodesmium on the West Florida shelf." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001476.

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30

Schneider, Isabel [Verfasser]. "Der Einfluss von Phosphaten auf die Proliferation und die osteogene Differenzierung humaner Stammzellen aus Nabelschnurblut / Isabel Schneider." Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2019. http://d-nb.info/1192250990/34.

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31

Guppy, Christopher Neil. "Phosphorus and organic matter interactions in highly weathered soils /." St. Lucia, Qld, 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17420.pdf.

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32

Nash, David. "Phosphorus transfer from land to water in pasture-based grazing systems /." Connect to thesis, 2002. http://eprints.unimelb.edu.au/archive/00000752.

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33

Grenier, Aline M. "Influence of selected endomycorrhizal fungi and phosphorus fertilization on the growth and mineral nutrition of onion grown in newly reclaimed organic soil." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=69533.

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Onions are highly responsive to endomycorrhizae and improved plant growth is among the benefits associated with this symbiosis, particularly in low phosphorus soils. Although this crop is grown extensively in organic soils, few studies have been conducted on these. Onion plants (Allium cepa L. cv. Norstar) were inoculated with Glomus aggregatum Schenck & Smith, Glomus clarum Nicolson & Schenck, Glomus fasciculatum Gerdemann & Trappe, Glomus intraradix Schenck & Smith and Glomus versiforme (Karst.) Berch and grown in the field and under controlled conditions to evaluate their efficiency in newl

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34

Ingwersen, Wesley W. "Viability of wetland trees after twenty years on phosphatic clay settling areas and their role in ecosystem development." [Gainesville, Fla.] : University of Florida, 2006. http://purl.fcla.edu/fcla/etd/UFE0014272.

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35

Clemens, Oliver [Verfasser], and Horst P. [Akademischer Betreuer] Beck. "Synthese und Charakterisierung von lithiumhaltigen Übergangsmetall-Phosphaten und -Vanadaten sowie von deren Mischkristallen / Oliver Clemens. Betreuer: Horst P. Beck." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2012. http://d-nb.info/1052222404/34.

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36

Herrera, Daniel A. "Relationships among Mehlich-1, Mehlich-3, and water-soluble phosphorus levels in manure-amended, inorganically fertilized, and phosphatic soils." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0002540.

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37

Zhang, Tiequan. "Chemical behavior of phosphorus over time in fertilized soils." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34486.

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Fertilizer P accumulates in soils, with potential for movement to waterways, causing eutrophication. Fertilizer P reactions in monoculture corn (Zea mays L.) production over time will determine environmentally sound soil management practices. Soil P changes over time were determined on a Chicot sandy clay loam (Grey Brown Luvisol) and a Ste. Rosalie clay (Humic Gleysol). Fertilizer P was added at 44 and 132 kg P ha$ sp{-1}$ and to the Chicot soil only, manure containing 60 kg P for the first five years. Mehlich-3 (M3) extraction, soil P fractionation, $ sp{31}$P NMR analysis, P in leaching wat

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38

Ochwoh, Victor Akangah. "The dynamics of phosphorus extractability, adsorption, and desorption rates as influenced by phosphorus applications and incubation times." Thesis, University of Pretoria, 2002. http://hdl.handle.net/2263/28636.

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In a study to investigate the fate of the applied P in soils, a red-sandy clayey soil (Ferric Luvisols) from Rustenburg (high P fixing) and a red-sandy loam soil (Ferric Acrisols) from Loskop (low P fixing) were used. Sequential P fractionations were used to determine the content of the different P pools to show which pool the applied P was transformed to. The soils treatments consisted of different Prates (0, 25, 50, 100, 150, and 200 mg kg-1), and incubation periods (1, 60, 120, 180, and 240 days) under a laboratory conditions. The sequential P fractionation procedure consisted of extraction

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39

Mengesha, Abi Taddesse. "Characterizing phosphate desorption kinetics from soil: an approach to predicting plant available phosphorous." Pretoria : [s.n.], 2008. http://upetd.up.ac.za/thesis/available/etd-01212009-094137.

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40

Diehl, Julia [Verfasser]. "Über den Einfluss von energiereichen Phosphaten und Metaboliten auf kognitive und psychomotorische Leistungen des älteren und alten Menschen / Julia Diehl." Köln : Deutsche Sporthochschule Köln, 2009. http://d-nb.info/1070605468/34.

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41

Unuofin, Frank Oshioname. "Optimization of the vermidegradation of cow dung – waste paper mixtures." Thesis, University of Fort Hare, 2014. http://hdl.handle.net/10353/d1021276.

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Vermicomposting is an eco-friendly waste management strategy. Its successful performance necessitate that key functioning parameters like earthworm stocking density, nutrient enrichment be established for each target waste/waste mixture. One main target waste mixture in South Africa, and in the University of Fort Hare in particular is waste paper mixed with cow dung and rock phosphate (RP) for phosphorus (P) enrichment. This study was carried out to address the following specific objectives, to determine (i) the effect of Eisenia fetida stocking density on the bioconversion of cow dung waste p

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42

Norrish, Shane A., University of Western Sydney, of Science Technology and Environment College, and School of Environment and Agriculture. "Soil and water interactions controlling wheat crop response to phosphorus fertiliser in north-western New South Wales." THESIS_CSTE_EAG_Norrish_S.xml, 2003. http://handle.uws.edu.au:8081/1959.7/613.

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This thesis examines the response to P fertiliser by wheat crops growing in the vertosol soils of the low rainfall areas of the northern grain zone of eastern Australia. Farmers in this region depend on water accumulated from rainfall over a fallow period and stored in the subsoil to increase wheat grain yield beyond that normally achievable from in-crop rainfall and to decrease the production risks due to rainfall variability. The large variability in stored water, seasonal rainfall and subsoil properties result in extremely varied yield and yield responses to P fertiliser between seasons and

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43

Kilgour, Douglas William. "Potential negative effects of adding phosphate-based fertilizers to lead in metal-contaminated soils." Auburn, Ala., 2007. http://repo.lib.auburn.edu/07M%20Theses/KILGOUR_DOUGLAS_2.pdf.

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44

Barnett, G. M. (Gordon M. ). "Feed additives and animal waste phosphorous reactions." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41322.

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Organic phosphorus (P$ sb{ rm o}$) in farm animal wastes must be mineralized to inorganic P for subsequent plant use. This study was conducted to determine if feed additives affect P$ sb{ rm o}$ mineralization, manure decomposition, and plant growth. Feed additives in aqueous systems affected the P mineralization of inositol hexaphosphate by phytase and of adenosine monophosphate by alkaline phosphatase. Pronounced effects were produced by bacitracin and both enzymes and by neomycin on phytase. Feed additives in dairy cattle (Bos taurus L.) manure produced effects on microbial activity as meas

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45

PARVINI-AHMADI, NAGHI. "Phosphatation et tenue a la corrosion d'aciers doux galvanises et electrozingues : passivation par le titane trivalent." Université Louis Pasteur (Strasbourg) (1971-2008), 1989. http://www.theses.fr/1989STR13093.

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Etude de certains aspects et parametres lies au traitement de conversion par phosphatation des toles d'aciers galvanises et electrozingues: temperature, composition, ph des bains. . . Caracterisation de la couche de conversion et examen de l'influence du vieillissement du bain de degraissage et du traitement final de passivation par des solutions de ticl::(3)

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46

Norrish, Shane. "Soil and water interactions controlling wheat crop response to phosphorus fertiliser in north-western New South Wales." View thesis, 2003. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20051013.115006/index.html.

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47

Андрієнко, Ніна Ігорівна, Нина Игоревна Андриенко, Nina Ihorivna Andriienko, Сергій Васильович Вакал, Сергей Васильевич Вакал та Serhii Vasylovych Vakal. "Использование алжирских фосфоритов в качестве сырья для производства фосфорных минеральных удобрений". Thesis, Издательство СумГУ, 2004. http://essuir.sumdu.edu.ua/handle/123456789/23589.

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Mpabanga, Nkosi. "The effect of phosphorus fertilizer application on growth, biomass and nutritive value of Pigeon pea (Cajanus cajan (L.) Millsp.) varieties in Alice, South Africa." Thesis, University of Fort Hare, 2017. http://hdl.handle.net/10353/6180.

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Low soil fertility has been identified to be among the major causes of low pasture quantity and quality. Scarcity of high quality forage mainly during the dry season threatens animal productivity in some areas of South Africa, thus the need for identifying livestock feed alternatives. Pigeon pea is a woody legume that has continually been an important shrub in agroforestry and can provide protein-rich livestock feed during times of shortage. Soil fertility to support the production of pigeon pea can be enhanced by application of fertilisers. Therefore, this study was carried out firstly, to de

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Conceição, Fabiano Tomazini da. "Comportamento geoquímico de radionuclídeos e metais pesados em solos da Bacia do Rio Corumbataí (SP) /." Rio Claro : [s.n.], 2004. http://hdl.handle.net/11449/103021.

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Orientador: Daniel Marcos Bonotto<br>Banca: Marta Silvia Maria Mantovani<br>Banca: Sonia Maria Barros de Oliveira<br>Banca: Gilberto José Garcia<br>Banca: Jairo Roberto Jiménez-Rueda<br>Resumo: Este trabalho visou estudar o comportamento geoquímico de radionuclídeos e metais pesados em solos de uso agrícola na bacia do Rio Corumbataí (SP). A concentração e variabilidade natural em rochas sedimentares na bacia do Rio Corumbataí segue a tendência Ca > Mg > K > Na, com baixa concentração natural de metais pesados e radionuclídeos. A distribuição das taxas de dose nos solos mostra que ocorre uma m

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Voss, Martin, Wolfgang Blenau, Bernd Walz, and Otto Baumann. "V-ATPase deactivation in blowfly salivary glands is mediated by protein phosphatase 2C." Universität Potsdam, 2009. http://opus.kobv.de/ubp/texte_eingeschraenkt_verlag/2010/4436/.

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The activity of vacuolar H+-ATPase (V-ATPase) in the apical membrane of blowfly (Calliphora vicina) salivary glands is regulated by the neurohormone serotonin (5-HT). 5-HT induces, via protein kinase A, the phosphorylation of V-ATPase subunit C and the assembly of V-ATPase holoenzymes. The protein phosphatase responsible for the dephosphorylation of subunit C and V-ATPase inactivation is not as yet known. We show here that inhibitors of protein phosphatases PP1 and PP2A (tautomycin, ocadaic acid) and PP2B (cyclosporin A, FK-506) do not prevent V-ATPase deactivation and dephosphorylation of sub

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