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Dissertations / Theses on the topic 'Chloride and iodic acid'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Gao, Xin. "Localized Corrosion Initiation of Steel in CO2 Environments." Ohio University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1596657895973621.

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2

Tatsumi, Kenta. "Transition Metal-Catalyzed Novel Transformations of Acid Chlorides and Acid Anhydrides." Kyoto University, 2019. http://hdl.handle.net/2433/242519.

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3

Al-Othman, Amani Lutfi. "Gypsum production and hydrochloric acid regeneration by reaction of calcium chloride solution with sulfuric acid." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=82463.

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One critical issue in chloride hydrometallurgy is the regeneration of the lixiviant HCl that is commonly achieved by pyrohydrolysis. It is the scope of this thesis to investigate a low temperature HCl regeneration process, which regenerates HCl and produces saleable gypsum. Experiments were performed to determine the optimum conditions of the chemical reaction that involved the reactive mixing of calcium chloride (CaCl2) solution with sulfuric acid (H2SO4) solution at low temperature and atmospheric pressure.<br>The results showed that the crystallization chemistry of the CaCl 2-H2SO4 r

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4

Bryce, Christine. "The kinetics of copper etching in ferric chloride-hydrochloric acid solutions /." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61225.

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The kinetics of copper etching were studied using a ferric chloride-hydrochloric acid etchant in a stirred-tank reactor. At a constant acid molarity of about 0.84 and FeCl$ sb3$ concentrations varying from 0 to 3 M, the etch rate was found to reach a maximum at about 2 M FeCl$ sb3$. The use of a ferric nitrate-nitric acid solution yielded similar results but substantially reduced etch rates.<br>Since the nitrate ion is essentially non-complexing with the ferric ion, the presence of chloro complexes of the ferric ion in FeCl$ sb3$-HCl etchant solutions was investigated. The FeCl$ sb2 sp+$ and F

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5

Boliński, Lech. "Platinum and rhodium recovery from scrapped automotive catalyst by oxidative acid chloride leaching." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60573.

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There is a great interest in the treatment of spent autocatalyst because, due to large amounts of PGM used by catalytic converters, the autocatalyst scrap is the largest and constantly growing source of PGM available for recycling. A hydrometallurgical method of PGM extraction from honeycomb type catalyst containing platinum (800-1200 ppm) and rhodium (50-60 ppm) using HCl-AlCl$ sb3$-HNO$ sb3$ or HCl-HNO$ sb3$ mixtures was studied. Experimental results of the leaches performed in a bench scale tubular reaction with recycled continuous flow of the leaching solution as well as 1000 cc stirred re

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6

Witsch, James Michael. "Poly(amide acid) infusion with Copper(II) Chloride to form polyimide microcomposite films." Thesis, Virginia Tech, 1992. http://hdl.handle.net/10919/34822.

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7

D\'Imperio, Seth. "Microbial interactions with arsenite, hydrogen and sulfide in an acid-sulfate-chloride geothermal spring." Thesis, Montana State University, 2008. http://etd.lib.montana.edu/etd/2008/d'imperio/D'ImperioS0508.pdf.

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The work presented in this thesis investigated the importance of hydrogen, sulfide and arsenite in microbial community structure and function within a model Acid-Sulfate-Chloride (ASC) spring in Yellowstone National Park. Previous studies in this spring found that microbial arsenite [As(III)] oxidation is absent in regions of the spring outflow channel where H2S exceeds ~5 Î¼M. Ex situ assays with microbial mat samples demonstrated immediate As(III) oxidation activity when H2S was absent or in low concentrations, suggesting the presence of functional As(III) oxidase enzymes in reg

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8

Ling, Jie Albrecht-Schmitt Thomas E. "Hydrothermal syntheses, structures, and properties of new iodate and selenite compounds of transition metals, lanthanides, and actinides." Auburn, Ala, 2007. http://repo.lib.auburn.edu/2007%20Fall%20Dissertations/LING_JIE_49.pdf.

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9

Bandarupalli, Praveen Kumar. "Thermal Analysis of Decomposition Reactions of Aspartic and Glutamic Acids in Potassium Chloride Matrix." Youngstown State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1391391780.

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10

Boyd, Eric Stephen. "Biology of acid-sulfate-chloride springs in Yellowstone National Park, Wyoming, United States of America." Diss., Montana State University, 2007. http://etd.lib.montana.edu/etd/2007/boyd/BoydE0807.pdf.

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11

Girgin, Seref. "Crystallization of alpha-calcium sulphate hemihydrate by aqueous reaction of calcium chloride with sulphuric acid." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=102980.

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The crystallization of alpha-calcium sulphate hemihydrate with simultaneous regeneration of HCl by controlling the reaction of H 2SO4 (2.6M-8M) with concentrated CaCl2 (1-3.5M) solution at 80°C was investigated. The research included 3 studies: (a) study of the kinetics and mechanism of CaSO4 dehydrate (DH) conversion to hemihydrate (HH) and anhydrite (AH) in variable composition CaCl2 -HCl media; (b) reactive crystallization of alpha-hemihydrate in a semi-batch reactor configuration following the LaMer Diagram concept; and (c) the study of crystal growth and metal uptake by seeded crystalliza

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12

Yunus, Nor Zurairahetty Mohd. "Effect of humic acid and chloride salts on the behaviour of lime-stabilised organic clay." Thesis, University of Nottingham, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.606103.

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The effectiveness of lime as a chemical additive for the stabilisation of organic clay is considered uncertain, especially in the long term. Humic acid is believed to be the main deleterious constituent of organic matter that renders lime stabilisation inefficient. Due to this circumstance, the influence of chloride salts to mitigate the adverse effect humic acid has on lime-stabilised clay was investigated experimentally. Artificial organic clay, prepared by mixing commercial kaolin and various amounts of humic acid (0.5%, 1.5% and 3.0%) was used in this study as untreated (organic) clay. A c

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13

Adams, FV, PA Olubambi, FH Potgieter, and Der Merwe F. Van. "Corrosion resistance of duplex stainless steels in selected organic acids and organic acid/chloride environments." Anti-Corrosion Methods and Materials, 2010. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001195.

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Abstract Purpose – The purpose of this paper is to supplement the scant previous investigations on the corrosion behaviour of 2205 and 2507 duplex stainless steels in selected organic acids containing chloride additions. Design/methodology/approach – Microstructural examination of the alloys was first carried out, after which the corrosion behaviour of the alloys in citric, oxalic, formic and acetic acids containing chloride additions at varying temperatures was studied using electrochemical techniques. Findings – The alloy 2507 material had a larger grain size than did the alloy 2205 sample.

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14

Kim, Sae Wung. "Measurement of Pernitric Acid, Hydrogen Chloride, and Sulfur Dioxide during the Intercontinental Chemical Transport Experiment Campaign." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19729.

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This study presents airborne measurements of HO2NO2, HCl and SO2 using chemical ionization mass spectrometry (CIMS) during the Intercontinental Chemical Transport Experiment (INTEX) field campaign, an intensive study to characterize the chemical composition of the troposphere in the eastern United States, Mexico City, and the North Pacific which is the outflow region of Asia. The first direct in situ measurements of HO2NO2 were made in the free troposphere over the eastern U.S. during summer 2004. The highest mean mixing ratio of 76 pptv (median = 77 pptv, = 39 pptv) was observed in the alt

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15

Sandell, Sara. "Binding & Release of Biomolecules from Hyaluronic Acid Macrogels with Cetylpyridinium Chloride as a Model Surfactant." Thesis, Uppsala universitet, Institutionen för farmaci, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-149774.

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The purpose of this master thesis project was to investigate the penetration ofbiomolecules into hyaluronic acid (HA) macrogels. The investigations were performedboth in the presence and in the absence of the non-biodegradable surfactantcetylpyridinium chloride (CPC), which earlier has proved to form a micelle-rich shellat the gel surface. In this work investigations were performed to see if properties ofthe biomolecules used, such as size and charge, had any impact on the binding to theHA gels both with and without CPC. The biomolecules used were the proteinscytochrome c, lysozyme, hemoglobin

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16

Sanin, Leira David. "Photochemistry of sulfuyl chloride for more regioselective chlorination (and chlorosufonation) of carboxylic acids and acid chlorides." Thesis, University of Strathclyde, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273394.

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17

Meyer, Jerry Christopher. "Oxidation chemistry and kinetics of model compounds in supercritical water : glucose, acetic acid, and methylene chloride." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/12396.

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18

Cho, Jeong Han. "Gating of CFTR chloride channels distinct closd states revealed by the action of AMP-PNP /." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/5867.

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Thesis (Ph. D.)--University of Missouri-Columbia, 2006.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on August 10, 2007) Vita. Includes bibliographical references.

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19

Jefferies, P. J. "Role of free hydrochloric acid in the low-cost regeneration of ferric chloride etchant by oxygen gas." Thesis, Cranfield University, 2005. http://dspace.lib.cranfield.ac.uk/handle/1826/3793.

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This thesis concerns the development of a low cost and environment- friendly method for the regeneration of the most widely used aqueous etchant, ferric chloride, found in photochemical machining (PCM) facilities. In order to implement the above process a comprehensive and automated chemical analysis and control system was designed to fully investigate the key parameters which previous research has suggested play a major role in the analysis of ferric chloride. Monitoring methods have been developed and deployed in a commercial environment such that the etchant could be analysed remotely acros

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20

Loto, CA, and API Popoola. "Effect of Tobacco and Kola Tree Extracts on the Corrosion Inhibition of Mild Steel in Acid Chloride." International Journal of Electrochemical Science, 2011. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000675.

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Corrosion and inhibitor protection of mild steel specimens immersed in acid chloride solution was investigated at ambient temperature by gravimetric and potential monitoring methods. The electrode potential monitoring was performed using a digital voltmeter and a saturated calomel electrode (SCE) as the reference electrode. Extracts of kola plant and tobacco in different concentrations were used as ‘green’ inhibitors. This paper reports the results obtained from the weight loss method, calculated corrosion rates and the observed electrochemical response from the electrochemical potential monit

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21

Jones, Lynn. "Selective preconcentration of platinum and rhodium from hydrochloric acid media containing tin (II) chloride using polyurethane foam." Master's thesis, University of Cape Town, 1987. http://hdl.handle.net/11427/17661.

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Includes bibliographical references.<br>The potentially quantitative and selective sorption of chloro-(trichlorostannato)-platinum(II) and -rhodium (III/I) complex anions by polyurethane foams has been examined. Quantitative separation of platinum(II) from iridium and ruthenium has been achieved. Rhodium( III) is similarly sorbed by polyurethane foam in the presence of sufficient tin(II) chloride and-its clean separation from iridium has been achieved using this method. Ruthenium, although not significantly sorbed under the same conditions as platinum and rhodium, appears to inhibit the extrac

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22

Chisholm, Paul Norman. "Dry absorption of hydrogen chloride and sulfur dioxide by calcium-based sorbents from humidified flue gas /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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23

Ozhathil, Lijo Cherian. "A structural and functional insight into TMEM16B, a calcium-activated chloride channel." Doctoral thesis, SISSA, 2014. http://hdl.handle.net/20.500.11767/3921.

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TMEM16B, also known as anoctamin 2 has been recently identified as a calcium-activated chloride channel. It is expressed at the synaptic terminals of photoreceptors, in hippocampal cells, in the cilia of olfactory sensory neurons and in the microvilli of vomeronasal sensory neurons. TMEM16B, as its most known cousin TMEM16A, is activated both by calcium and voltage. When this thesis was started there was no available data correlating the gating function and protein structure in TMEM16B. In our first manuscript, we show a coupling between calcium and voltage in TMEM16B activation. Primary seq

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24

Svensson, David. "Synthesis and characterisation of polyelectrolytes based on polymers of diallyldimethyl ammonium chloride and poly(styrene-co-butadiene)." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-82344.

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In printed electronics there are many polyelectrolytes to choose from. While polyelectrolytes such as polystyrene sulfonic acid can fulfill many ofthe desired functionalities of a semiconductor, there is a need for other polyelectrolytes with other functionalities, such as functionality at low airhumidity and better cross-linking possibilities, while still functioning as a good semiconductor.Within this thesis, there is a description of general polyelectrolytes, as well as various usages.The synthesis and characterization of new polyelectrolytes that have been developed, based upon diallyldime

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25

Hock, Sebastian. "Precipitation of hematite and recovery of hydrochloric acid from aqueous iron(II, III) chloride solutions by hydrothermal processing." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66966.

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Regeneration of HCl from process solutions is an important unit operation in chloride hydrometallurgy. Currently, it is accomplished by the highly capital and energy intensive technology of pyrohydrolysis. The research described in this thesis, has focused on an alternative HCl regeneration system from iron(II, III) chloride solutions that has been coined "Hydrolytic Distillation". This system relates to the earlier developed (in the 1970s) PORI Process. Basically this system involves two steps: (1) the oxidation of ferrous chloride solution by oxygen sparging under reflux co

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26

Martins, Douglas Fróes. "Estudo de banhos ácidos para substituição de banho alcalino cianídrico na eletrodeposição de zinco sobre pregos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/18587.

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O objetivo deste trabalho é determinar um processo com qualidade suficiente para produzir revestimentos de zinco a partir de banho ácido à base de cloreto de potássio, por meio de comparação de resultados. O estudo foi realizado comparando dois tipos de banhos disponíveis no mercado, através da caracterização das amostras produzidas em um protótipo da linha de galvanização, projetada para simular o processo industrial. Neste trabalho, foram avaliados parâmetros operacionais e a influência dos aditivos e formulação básica. Na avaliação da qualidade do depósito, além da determinação da espessura

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27

Rotsch, David Alan. "Hydroxyl-bridged lanthanide amino acid clusters and hexatantalum and hexatungsten chloride clusters: synthesis, characterization, and relevance to biomedical imaging." Diss., University of Iowa, 2011. https://ir.uiowa.edu/etd/2974.

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The synthesis and characterization of polynuclear lanthanide complexes and tungsten chloride clusters are detailed. The relevance of these complexes to MRI contrast agents, physiological parameter reporting MRI contrast agents, and X-ray computed tomography contrast agents is discussed. Polylanthanides, in particular polygadolinium and polyeuropium(II) complexes, represent a paradigm shift in contrast agent design. Base hydrolysis of aqueous Ln(ClO4)3 in the presence of L-histidine and alkali metal halide anions (Cl-, Br-, and I-) yie

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28

Ling, Jordy Kim Ung. "Enhanced solubility and stability of antioxidants from Mangifera pajang in natural deep eutectic solvent of choline chloride/ascorbic acid." Thesis, Curtin University, 2020. http://hdl.handle.net/20.500.11937/80840.

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This research work prepared a choline chloride/ascorbic acid natural deep eutectic solvent (CHCL/AA NADES) to enhance the solubility and stability of antioxidants extracts from the fruit wastes of Mangifera pajang. CHCL/AA NADES enhanced the solubility of antioxidant extracts by 11% as compared to water. Moreover, CHCL/AA NADES stabilized the antioxidant extracts under high temperature and pH by extending its half-life duration, determined by first-order kinetic model and a new proposed multi-term degradation model.

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29

Lu, Lin, and 鹿琳. "Mechanisms involved in the release of ATP from skeletal myoblasts at low pH." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B47323772.

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Lactic acid, which induces pH depression, leads to ATP efflux from muscle to extracellular space: it was reported that CFTR was involved in this process. However, the mechanism by which lactic acid activated CFTR and brought about the ATP release is still unknown. This study was performed to investigate (1) what channels may be involved or even conduct ATP release, and (2) how lactic acid activated CFTR. Expression of the possible channels that may conduct ATP release in L6 cells was investigated using RT-PCR: ClC-2, ClC-3, ClC-7, CACC, VDAC, connexin 40, connexin 43 and pannexin 3 were exp

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30

Assamongkorn, Angsana. "Reduction of Sodium Nitrite and Sodium Chloride in a Cured Meat Product by Using Acid Development to Inhibit Botulinal Toxin Formation." DigitalCommons@USU, 1985. https://digitalcommons.usu.edu/etd/5325.

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Pediococcus acidilactici as a lactic acid producer, and sucrose were added to breakfast strip products in order to reduce added levels of sodium nitrite and sodium chloride and yet limit the growth of Clostridium botulinum and inhibit toxin production. Sucrose at 0.4 or 0.9% with P. acidilactici at 1.0 x 10 cells/g were added during preparation of breakfast strip products prepared with combinations of 40 or 80 ppm sodium nitrite and 1.0 or 2.0% sodium chloride. Other ingredients were added at levels normally used in cured meat products. C. botulinum types A and B at 1,000 spores/g were inocula

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31

Kim, Hyejin. "Effects of lactic acid and cetylpyridinium chloride as immersion treatments to reduce populations of Salmonella Typhimurium attached on ready-to-eat shrimp." Master's thesis, Mississippi State : Mississippi State University, 2007. http://library.msstate.edu/etd/show.asp?etd=etd-11072007-093858.

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32

Taubert, Jenny. "Use of Formulations Based On Choline Chloride-Malonic Acid Deep Eutectic Solvent for Back End of Line Cleaning in Integrated Circuit Fabrication." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/283692.

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Interconnection layers fabricated during back end of line processing in semiconductor manufacturing involve dry etching of a low-k material and deposition of copper and metal barriers to create copper/dielectric stacks. After plasma etching steps used to form the trenches and vias in the dielectric, post etch residues (PER) that consist of organic polymer, metal oxides and fluorides, form on top of copper and low-k dielectric sidewalls. Currently, most semiconductor companies use semi aqueous fluoride (SAF) based formulations containing organic solvent(s) for PER removal. Unfortunately, these

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33

Delk, Roger Dale. "The effects of guanidinium chloride, urea and sodium dodecyl sulfate on the endoproteinase Glu-C- catalyzed hydrolysis of N-t-BOC-L-glutamic acid-gas-phenyl ester." Virtual Press, 1994. http://liblink.bsu.edu/uhtbin/catkey/897494.

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Endoproteinase Glu-C (EPGIu-C, EC 3.4.21.19), an enzyme isolated from the bacteria Staphylococcus aureus, has been found to cleave specifically at the carboxyl-terminal side of glutamyl and aspartyl peptide bonds. EPGIu-C has been reported to be stable and active in the presence of common denaturants such as guanidinium chloride, urea and sodium dodecyl sulfate (Drapeau, G.R. (1977) Methods in Enzymology, 47:189-191). In order assess the denaturant stability and activity of EPGIu-C, the effect of three common protein denaturants, guanidinium chloride, urea, and sodium dodecyl sulfate (SDS) on

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34

Xuan, Wenxiang. "Glucose Levulinates as Bio-plasticizers." Thesis, KTH, Skolan för kemivetenskap (CHE), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-218153.

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Glucose, as the most plentiful sugar in nature, is a renewable resource and possesses excellent record in health safety. Levulinic acid is a platform chemical which plays an important role in biomass transformation and reactive intermediates. Both glucose and levulinic acid can be produced by biomass conversion with green processing techno logies. Due to the rising needs for bio-based, eco-friendly and non-toxic plasticizers, glucose levulinates as bio plasticizers were synthesized from glucose and levulinic acid, by utilizing microwave radiation or conventional condensation reaction (direc

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35

Boyd, Christopher C. "Effect of acetic or citric acid ultrafiltration recycle streams on coagulation processes." Master's thesis, University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4853.

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Integrating ultrafiltration (UF) membranes in lieu of traditional media filters within conventional surface water coagulation-flocculation-sedimentation processes is growing in popularity. UF systems are able to produce low turbidity filtered water that meets newer drinking water standards. For typical drinking water applications, UF membranes require periodic chemically enhanced backwashes (CEBs) to maintain production; and citric acid is a common chemical used for this purpose. Problems may arise when the backwash recycle stream from a citric acid CEB is blended with raw water entering the c

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36

Moussa, Mariam. "Loading of dendrimer nanoparticles into layer-by-layer assembled Poly(diallyl dimethyl ammonium) chloride-(Poly(acrylic acid))n Multilayer Films : Particle Electrokinetics, Film Structure Dynamics and Elasticity." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0383/document.

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Une analyse détaillée des propriétés physico-chimiques des nanoparticules (NP) anthropogéniques est nécessaire pour comprendre à un niveau mécanistique leurs interactions/toxicité potentielle avec/envers les composants biotiques des systèmes aquatiques naturels. Une telle analyse est également requise pour réaliser une évaluation complète et une optimisation de la performance des méthodes d’(ultra)filtration développées pour circonscrire le relargage des NPs dans les milieux aquatiques. Dans ce contexte, l'objectif de cette thèse de doctorat était de déchiffrer les processus physico-chimiques

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Arruda, Dorival Pires de 1962. "Avaliação de extratores químicos na determinação de silício disponível em solos cultivados com cana-de-açúcar /." Botucatu : [s.n.], 2009. http://hdl.handle.net/11449/90652.

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Resumo: Existem vários extratores que avaliam a disponibilidade de silício no solo. Nos Estados Unidos utiliza-se como extrator químico o ácido acético 0,5 mol L-1 , o qual já foi usado no Brasil, mas recentemente foi substituído pelo cloreto de cálcio 0,01 mol L-1, o mesmo utilizado na Austrália. Os extratores, de forma geral, são dependentes das características físicas do solo, principalmente do teor de argila, e podem subestimar ou superestimar os teores de silício no solo. Na literatura não há relatos de extratores de silício que se assemelhem às raízes das plantas, como é o caso da resina

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38

Botton, Tatiana. "Estudo comparativo da resistência à corrosão em meio ácido e em meio contendo cloreto dos aços inoxidáveis UNS S44400, UNS S30403 e UNS S31603, obtidos por laminação a quente." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-15082008-101752/.

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O presente trabalho tem como objetivo caracterizar o aco inoxidavel ferritico UNS S44400 quanto a sua resistencia a corrosao em comparacao a dois acos inoxidaveis austeniticos UNS S30403 e S31603, utilizando ensaios de perda de massa e eletroquimicos, tanto em meio acido quanto em meio contendo cloreto. A utilizacao dos inoxidaveis ferriticos vem crescendo em detrimento da utilizacao dos austeniticos tanto no Brasil, quanto no mundo, principalmente devido ao cenario instavel do preco do Ni. Sendo assim, cada vez mais se torna necessaria a obtencao de argumentos tecnicos e cientificos que permi

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Arruda, Dorival Pires de [UNESP]. "Avaliação de extratores químicos na determinação de silício disponível em solos cultivados com cana-de-açúcar." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/90652.

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Made available in DSpace on 2014-06-11T19:24:43Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-08-31Bitstream added on 2014-06-13T18:52:34Z : No. of bitstreams: 1 arruda_dp_me_botfca.pdf: 628799 bytes, checksum: c0a1f52e914545883936131898e973ff (MD5)<br>Existem vários extratores que avaliam a disponibilidade de silício no solo. Nos Estados Unidos utiliza-se como extrator químico o ácido acético 0,5 mol L-1 , o qual já foi usado no Brasil, mas recentemente foi substituído pelo cloreto de cálcio 0,01 mol L-1, o mesmo utilizado na Austrália. Os extratores, de forma geral, são dependente

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40

Favero, Alexandre Marafon. "Efeitos do cloreto de mercúrio e do cloreto de zinco sobre parâmetros renais e hepáticos em ratas lactantes e não-lactantes." Universidade Federal de Santa Maria, 2011. http://repositorio.ufsm.br/handle/1/4430.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The aim of this study was to compare the effects of mercuric chloride (HgCl2) on renal and hepatic parameters in adult non-lactating and lactating rats and their pups and to assess the potential preventive role of Zn, given as zinc chloride (ZnCl2), on the nephrotoxic and hepatotoxic effects caused by exposure to inorganic mercury. Nonlactating and lactating rats were pre-exposed to a daily dose of ZnCl2 (27 mg/kg/day; s.c.) or saline 0.9% during five consecutive days and to a daily dose of HgCl2 (5 mg/kg/day; s.c.) or saline 0.9%

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Magri, Thiago Cavalheiro. "Eletro-oxidação do corante preto ácido 210 na presença de íons cloreto." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/59/59138/tde-11092009-143101/.

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Neste trabalho foi estudada a degradação eletroquímica do azo corante Preto Ácido 210 (PA210) utilizando ânodos dimensionalmente estáveis de composição Ti/Ir0,10Sn0,90O2 e Ti/Ir0,30Sn0,70O2 preparados pelo método de decomposição térmica de precursores poliméricos. Os efeitos da presença e da concentração de cloreto, da composição eletródica, da densidade de corrente e do tempo de eletrólise sobre a oxidação eletroquímica de 100 ppm do corante PA210 foram avaliados. Em todas as condições estudadas, a remoção da absorbância em 465 nm (max) foi superior a 94% depois de 30 min de eletrólise. A red

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Buchert, Pascale. "Polymerisation d'un monomere cationique, le chlorure de methacryloxyethyltrimethylammonium, en microemulsion inverse : formulation, caracterisation et comportement rheologique des microlatex formes." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13106.

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Des poly (chlorure de methacryloyloethyltrimethylammonium) (madquat) solubilises dans des microgouttelettes d'eau dispersees dans une huile ont ete prepares par polymerisation en microemulsion inverse. Les microlatex formes presentent des comportements newtoniens sous cisaillement jusqu'a des fractions volumiques de 50% et rheo-fluidifiantes au dela

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Abdelaziz, Ahmed Marwa Nabil. "Effects of Escapin Intermediate Products (EIP-K) on Biofilms of Pseudomonas aeruginosa." Digital Archive @ GSU, 2013. http://digitalarchive.gsu.edu/biology_theses/50.

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Escapin is an L-amino acid oxidase that produces antimicrobial metabolites collectively called “Escapin Intermediate Products” (EIP-K). EIP-K and H2O2 together were previously shown to be bactericidal towards diverse planktonic bacteria. The present work investigates the ability of EIP-K and H2O2 to antagonize bacterial biofilms, using Pseudomonas aeruginosa as a model. The project had three aims: 1) determine the most effective concentrations of EIP-K and H2O2 necessary to break down existing P. aeruginosa biofilms, using a crystal violet assay; 2) examine the ability of EIP-K + H2O2 to inhib

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Chappaz, Alban. "Développement de nouveaux milieux et catalyseurs acides pour la transformation de biomasse lignocellulosique en molécules plateformes." Thesis, Lyon, École normale supérieure, 2014. http://www.theses.fr/2014ENSL0936.

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L'objectif de la thèse est d'étudier la transformation de la fraction cellulosique de la biomasse en acide lévulinique. Cet acide est une molécule plateforme permettant un accès à de multiples produits, tels que des solvants, des monomères ou encore des molécules à plus forte valeur ajoutée.Nous proposons d'étudier la transformation de la cellulose en acide lévulinique catalysée par des solutions aqueuses concentrées en acides de Brønsted. La forte acidité de ces milieux et leur capacité à rompre les liaisons hydrogène de la cellulose rendent possible des réactions à température modérée (80°C)

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Silva, Gleucia Carvalho. "Estudo do efeito do tipo de corte, adiÃÃo de cloreto de cÃlcio e Ãcido ascÃrbico nas caracterÃsticas fÃsicas, fÃsico-quÃmicas e microbiolÃgicas do abacaxi minimamente processado." Universidade Federal do CearÃ, 2001. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=11603.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>Devido a tendÃncia mundial de consumo de produtos in natura ou o mais prÃximo destes, os produtos minimamente processados vÃm apresentando um acentuado destaque no mercado consumidor. Este trabalho teve como objetivo avaliar os efeitos do corte e a adiÃÃo e cloreto de cÃlcio (CaCl2) e Ãcido ascÃrbico nas caracterÃsticas fÃsico-quimicas, fÃsicas e microbiolÃgicas do abacaxi minimamente processado. Os equipamentos, utensÃlios e embalagens foram higienizados com soluÃÃo de hipoclorito de sÃdio a 200ppm por 30 minutos. A higieni

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Andrade, Silvana Rodrigues Rabelo de. "Processamento mínimo de mamão (Carica papaya L.): efeitos de aditivos e atmosfera modificada na qualidade do produto." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/11/11141/tde-23042007-161127/.

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Este trabalho teve como objetivo avaliar as alterações fisiológicas, físicoquímicas, microbiológicas e sensoriais em mamões minimamente processados, submetidos a tratamentos químicos e atmosfera modificada passiva e ativa. No primeiro experimento foram determinadas a atividade respiratória e produção de etileno em mamões minimamente processados tratados com CaCl2 (1%); ácido ascórbico (0,5%); combinação de CaCl2 (1%) e ácido ascórbico (0,5%); e controle (sem aplicação de tratamento químico). O produto final foi armazenado a 6°C (±1°C) e 90% (±5%) de Umidade Relativa (UR) po

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Murcia, Julian Alejandro Giraldo. "Ação de reguladores vegetais em trigo (Triticum aestivum L.) e cevada (Hordeum vulgare L.)." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/11/11144/tde-28092016-114839/.

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Os vegetais possuem metabólitos endógenos circulantes nos tecidos, que não necessariamente possuem função nutricional, mas atuam na regulação do crescimento e do desenvolvimento, os hormônios vegetais. Estes, quando utilizados exogenamente, permitem ações planejadas no crescimento das plantas. Igualmente, análogos sintéticos com ação semelhante vêm sendo utilizados na agricultura com o mesmo objetivo. No entanto, o efeito destes reguladores vegetais é variável entre as espécies e em suas fases fenológicas, com necessidade de estudos especificos que propiciem respostas adequadas aos objetivos d

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Hellyer, William N. "Assessment of Benthic Macroinvertebrate Community Impairment from High-Aluminum Acid Mine Drainage in Middleton Run, Ohio, USA and the Impact of Ingested Aluminum on Crayfish Growth." Ohio University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1399465953.

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Saleem, Saima. "A method of chemical aftertreatment for the reduction of free formaldehyde release of a durable flame retardant finished cotton fabric." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-360.

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This thesis aims at developing a method of chemical aftertreatment for reduction of free formaldehyde release of a tetrakis (hydroxymethyl) phosphonium chloride (THPC) urea precondensate, ammonia cured durable flame retardant finished cotton fabric, by preventing the formation of free formaldehyde. Formaldehyde is toxic and carcinogenic. According to the worldwide standards, acceptable limit of free formaldehyde release, for the fabrics that have skin contact, is only 75 ppm (measured by water extraction method). In this research, a cotton fabric flame retardant finished in an industrial plant

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Andrade, Erik de Lima [UNESP]. "Análise de eficiência de biopolímero como composto coadjuvante no processo de coagulação-floculação e sedimentação." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/148951.

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