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Dissertations / Theses on the topic 'Tin trade'

Author: Grafiati

Published: 4 June 2021

Last updated: 29 July 2025

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1

Pillay, Subramaniam Sithambaram. "Performance of the world tin industry : effects of the international tin agreements, 1956-85." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/30631.

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The thesis presents an analysis of the influence of the international tin agreements (ITA) on the world tin industry between 1956 to 1985. The ITAs, the first of which came into effect in 1956, were jointly operated by tin producing and consuming countries. The International Tin Council (ITC) used a buffer stock and export controls to maintain the price of tin within a band. This experiment in stabilizing tin prices ended in October 1985, when the ITC was unable to continue its operations because it ran out of financial resources. The study first analyzes the market structure of the world tin

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2

Tsang, Sau-kam Karmen. "Transport system and retail activities : shopping centres in Hong Kong /." Click to view the E-thesis via HKUTO, 1998. http://sunzi.lib.hku.hk/hkuto/record/B42574948.

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3

Kunati, Sandeep Reddy. "Trace Measurements of Tellurium, Tin and Other Metals by Atomic and Laser Spectroscopy Techniques." Connect to resource online, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1219695278.

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4

Gundogdu, Ahmet Suayb. "Developing Islamic finance opportunities for trade financing : essays on Islamic trade vis-à-vis the OIC ten-year programme of action." Thesis, Durham University, 2012. http://etheses.dur.ac.uk/3548/.

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International trade has been defined as the engine of growth by international development institutions as more cross-border trade associated with more economic activity, higher employment, hence, poverty alleviation. If trade is the engine of growth, trade finance can be defined as grease for the engine. Hence, availing more funds to finance the enormous amount of international trade, counting about half of global GDP, is an important agenda for the OIC as well as many multilateral development institutions. The main reason behind the efforts to avail more funds for trade finance is to direct v

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5

Pablo, Fleurdelis, of Western Sydney Nepean University, and Faculty of Science and Technology. "Adsorptive stripping voltammetry of trace elements on a glassy carbon mercury film electrode." THESIS_FST_XXX_Pablo_F.xml, 1994. http://handle.uws.edu.au:8081/1959.7/207.

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This thesis describes the development of new adsorptive cathodic stripping voltammetric methods for reliable determination of some trace metals in biological and environmental materials on a glassy carbon mercury film electrode. In particular, the development of these methods involved selection of a suitable complexing agent for the respective metal ion studied, characterization of the electrode processes, investigation of factors affecting the voltammetric response such as concentration and pH of supporting electrolyte, concentration of complexing agent, accumulation potential, accumulation t

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6

Collomb, Cléo-Marie. "Un concept technologique de trace numérique." Doctoral thesis, Universite Libre de Bruxelles, 2016. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/233084.

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Cette thèse entend proposer un concept technologique – non-anthropocentré – de trace numérique. Il s’agit de rappeler que l’informatique exigeant des objets et des actes qu’ils passent par l’inscription pour exister, les machines computationnelles sont parties prenantes des processus de production des traces numériques, qu’une « sémiotique technologique » permettrait de décrire. L’enjeu d’un tel concept est de mettre en circulation une narration qui ne soit pas de l’ordre de ces discours de fin de monde décrits par Déborah Danowski et Eduardo Viveiros de Castro. Ces discours racontent la vie d

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7

Franco, Carmela. "Sicilian amphorae (1st-6th centuries AD) : typology, production and trade." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:48699a82-1f69-4bd3-b3fb-67b11013aac2.

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This thesis is a comprehensive investigation of the transport containers produced in Roman Sicily over a chronological period composed of five phases: Early Roman period (30 BC–AD 100); Middle Roman period (AD 100–300); Late Roman period (AD 300–440); Vandal Perios (AD 440/535) and Early Byzantine period (AD 536/600). The research investigates the production and transportation of Sicilian foodstuffs (especially wine) from the major ports of the island to Mediterranean ports and northern Europe. The results demonstrate the wide distribution of Sicilian amphorae and their important role within t

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8

Hindersmann, Iris [Verfasser], and Tim [Akademischer Betreuer] Mansfeldt. "Trace elements in floodplain soils - effects of redox conditions on the mobility of trace elements and volatilization of mercury / Iris Hindersmann. Gutachter: Tim Mansfeldt." Köln : Universitäts- und Stadtbibliothek Köln, 2014. http://d-nb.info/1060190427/34.

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9

Pablo, Fleurdelis. "Adsorptive stripping voltammetry of trace elements on a glassy carbon mercury film electrode." Thesis, View thesis, 1994. http://handle.uws.edu.au:8081/1959.7/207.

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This thesis describes the development of new adsorptive cathodic stripping voltammetric methods for reliable determination of some trace metals in biological and environmental materials on a glassy carbon mercury film electrode. In particular, the development of these methods involved selection of a suitable complexing agent for the respective metal ion studied, characterization of the electrode processes, investigation of factors affecting the voltammetric response such as concentration and pH of supporting electrolyte, concentration of complexing agent, accumulation potential, accumulation t

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10

Tekenya, Ronald. "Graphene-modified pencil graphite mercury-film electrodes for the determination of trace metals by cathodic adsorptive stripping voltammetry." University of the Western Cape, 2018. http://hdl.handle.net/11394/6552.

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>Magister Scientiae - MSc<br>This project focuses on the simple, fast and highly sensitive adsorptive stripping voltammetry detection of Nickel and Cobalt complexed with DMG and Nioxime respectively at a Reduced Graphene Oxide modified pencil graphite electrode in water samples. This research as well demonstrates a novel electrochemically reduced graphene oxide (ERGO)/mercury film (MF) nanocomposite modified PGE, prepared through successive electrochemical reduction of graphene oxide (GO) sheets and in-situ plated mercury film. The GO and graphene were characterized using FT-IR, HR-SEM,

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11

Almotari, Masaed Moti M. "Fabrication and Characterisation of Zinc Oxide Thin Films Singly doped With Trace amounts of Rare Earth Materials." Thesis, University of Canterbury. Department of Physics and Astronomy, 2013. http://hdl.handle.net/10092/8441.

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Two sets of nanostructured Zinc Oxide (ZnO) thin films doped with varying nominal concentrations of rare earth (RE) ions were prepared by pulsed laser deposition (PLD). One set was doped with europium ions (ZnO:Eu³⁺) while the other was doped with erbium ions (ZnO:Er³⁺). The nominal concentration of RE ions ranged from 0.025 to 5 atomic %. The produced films were structurally, morphologically and optically characterised using different techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence (PL), combined excitation and emission spectroscopy (CEES) and

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12

Li, Weijia, and n/a. "Development of New Binding Phases for Speciation Measurements of Trace Metals with the Diffusive Gradients in Thin Films Technique." Griffith University. School of Environmental and Applied Science, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040504.150905.

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The recently developed technique of diffusive gradients in thin films (DGT) for speciation measurement of analytes in the environment was further developed through the development of series of new binding phases including poly(acrylamide-co-acrylic acid) copolymer hydrogel (PAM-PAA), poly(acrylamidoglycolic acid-co-acrylamide) (PAAGA-PAM) hydrogel, the Whatman P81 cellulose phosphate ion exchange membrane (P81) and a liquid binding phase of poly(4-styrenesulfonate) (PSS). A new diffusion layer, cellulose dialysis membrane, was also employed for the liquid binding phase DGT. PAM-PAA copolyme

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13

Li, Weijia. "Development of New Binding Phases for Speciation Measurements of Trace Metals with the Diffusive Gradients in Thin Films Technique." Thesis, Griffith University, 2004. http://hdl.handle.net/10072/367741.

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The recently developed technique of diffusive gradients in thin films (DGT) for speciation measurement of analytes in the environment was further developed through the development of series of new binding phases including poly(acrylamide-co-acrylic acid) copolymer hydrogel (PAM-PAA), poly(acrylamidoglycolic acid-co-acrylamide) (PAAGA-PAM) hydrogel, the Whatman P81 cellulose phosphate ion exchange membrane (P81) and a liquid binding phase of poly(4-styrenesulfonate) (PSS). A new diffusion layer, cellulose dialysis membrane, was also employed for the liquid binding phase DGT. PAM-PAA copolyme

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14

Liu, Ping-fai. "The background and motives of Zhang Jian's industrialism Zhang Jian ti chu "mian tie zhu yi" de dong ji ji bei jing fen xi /." Click to view the E-thesis via HKUTO, 1997. http://sunzi.lib.hku.hk/hkuto/record/B31951430.

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15

Miller, Steven B. "Application of complex trace attributes to reflection seismic data near Charleston, South Carolina." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/50058.

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Complex trace attribute analysis has been applied to 24-fold VIBROSEIS reflection data acquired on the Atlantic Coastal Plain near Charleston, S. C., to yield an expanded interpretation of a Mesozoic basin concealed beneath Coastal Plain sediments. Complex trace attributes express the seismic trace in terms of a complex variable and emphasize different components of the original seismogram. Attributes derived from synthetic seismograms of thin beds are used to interpret the patterns observed on the real data. Complex trace attributes derived from the original seismic trace complement the inter

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16

Wilkop, Thomas. "Thin film calixresorcinarene membranes for chemical sensing." Thesis, Sheffield Hallam University, 2001. http://shura.shu.ac.uk/20538/.

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Novel applications for calix[4]recorcinarene (C[4]RA) sensing membranes have been investigated. A comprehensive deposition study was carried out, encompassing casting, spin coating and Langmuir Blodgett (LB) deposition. The spin coating thickness depended on the angular velocity w, following the description of d = c.wx with coefficients of x - 0.44 and - 0.48 for concentrations of 1 mg/ml and 2mg/ml respectively. The analysis of the LB deposited films established a thickness of 0.95 nm for a monolayer. Furthermore the C[4]RA, was successfully employed as a deposition matrix for a non surface a

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17

Shiva, Amir Houshang. "Evaluating the Performance of DGT Technique for Selective Measurement of Trace Metals and Assessment of Environmental Health in Coastal Waters." Thesis, Griffith University, 2016. http://hdl.handle.net/10072/367257.

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The diffusive gradients in thin films (DGT) technique as a passive sampler for measurement of trace metals was validated and evaluated. A systematic determination of diffusion coefficients for a wide range of cationic (Al, Cd, Co, Cu, Mn, Ni, Pb, Zn) and oxyanionic (Al, As, Mo, Sb, V, W) metals in open (ODL) and restricted (RDL) diffusive layers used by the DGT technique was performed. The diffusion coefficients were determined at acidic and neutral pH, using two independent methods, diffusion cells and time-series DGT techniques. The calculated values for many oxyanions were the first repor

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18

Alpmann, Alexander [Verfasser], and Wolfgang [Akademischer Betreuer] Schwack. "Trace analysis of acrylamide by high-performance thin-layer chromatography coupled to mass spectrometry / Alexander Alpmann. Betreuer: Wolfgang Schwack." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2012. http://d-nb.info/1027353053/34.

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19

Sanga, Nelia Abraham. "Determination of heavy metals at the electrochemically reduced graphene oxide mercury film electrode (ERGO-HgF-PGE) using adsorptive stripping voltammetry." University of Western Cape, 2020. http://hdl.handle.net/11394/7718.

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>Magister Scientiae - MSc<br>This work reports the use of a pencil graphite electrode (PGE) as inexpensive and sensitive electrochemical sensing platform fabricated by using electrochemically reduced graphene oxide (ERGO) in conjunction with an in-situ plated thin mercury film. For the first time the ERGOHgF-PGE sensor is proposed for simultaneous detection of cadmium (Cd2+), copper (Cu2+), lead (Pb2+) and zinc (Zn2+) using N-Nitroso-N-phenylhydroxylamine (cupferron) as complexing agent by square-wave adsorptive cathodic stripping voltammetry (SW-AdCSV). The technique is based on the adso

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20

Eltz, Fabiana Zarpelon. "Filmes de PAH/PAA com nanopartículas metálicas para a desinfecção de efluentes industriais." reponame:Repositório Institucional da UCS, 2017. https://repositorio.ucs.br/handle/11338/3603.

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O fornecimento e o acesso à água potável é um dos grandes desafios deste século. Nesta perspectiva, o rápido avanço da Nanotecnologia tem contribuído significativamente para o desenvolvimento e a produção de nanomateriais, objetivando melhorar o desempenho e a eficiência dos processos de descontaminação da água. Desse modo, o presente trabalho teve por objetivo preparar e caracterizar filmes automontados de poli(hidrocloreto de alilamina) (PAH) e poli(ácido acrílico) (PAA) contendo nanopartículas de prata (AgNPs) e de cobre (CuNPs), visando sua posterior aplicação no tratamento terciário de ef

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21

Brück, Felix Benjamin [Verfasser], Tim [Gutachter] Mansfeldt, Harald [Gutachter] Weigand, and Christina [Gutachter] Bogner. "Accelerated carbonation of waste incinerator bottom ash for trace metal immobilisation / Felix Benjamin Brück ; Gutachter: Tim Mansfeldt, Harald Weigand, Christina Bogner." Köln : Universitäts- und Stadtbibliothek Köln, 2019. http://d-nb.info/1199537276/34.

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22

Tian, Qizhi Verfasser], Sorin A. [Akademischer Betreuer] [Huss, and Ray C. C. [Akademischer Betreuer] Cheung. "Novel Power Trace Processing Methods for Side-Channel Analysis of Cryptosystems / Qizhi Tian. Betreuer: Sorin A. Huss ; Ray C. C. Cheung." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2013. http://d-nb.info/1107770734/34.

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23

Pantzare, Nathalie. "Biochar-based thin-layer capping of contaminated sediment in Burefjärden, northern Sweden : Assessment of biochar mixed into four structural materials for preventing release of trace elements from sediment to water." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-87235.

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Coastal areas around the world have been recognized as largely impacted by anthropogenic activities resulting in pollution of marine sediments. In Sweden, surveys conducted along the coastline of the Bothnian Bay have identified a total area of about 29 km2 as fiber rich sediments. In the Bureå sea area near Skellefteå vicinity, Västerbotten county, elevated levels of mercury (Hg), methyl-Hg, arsenic (As), copper (Cu), lead (Pb), cadmium (Cd), zinc (Zn) and polycyclic aromatic hydrocarbons (PAH) have been classified and believed to be mainly affected by emissions from a pulp and paper industry

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24

Panther, Jared Graeme. "Diffusive Gradients in Thin Films for Inorganic Arsenic Speciation and Electrothermal Atomic Absorption Spectrometry with a Coupled Microcolumn for Trace Metal Speciation." Thesis, University of Canterbury. Chemistry, 2008. http://hdl.handle.net/10092/3675.

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This thesis is directed towards the development of the diffusive gradients in thin films (DGT) technique for the measurement of total dissolved As, and for As speciation measurements. In addition, a preliminary investigation of a novel laboratory-based method for measuring labile metal species was carried out; this method involved the coupling of a microcolumn of adsorbent with a standard electrothermal atomic absorption spectrometer. An iron-oxide adsorbent was utilized for As measurements by DGT. The diffusion coefficients of inorganic Asv and AsIII> were measured through the polyacrylamide

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25

Gillings, Mark. "Ceramic production in a Roman frontier zone: A comparative Neutron Activation and Petro-Textural analysis of Roman coarse pottery from selected sites on and around the Antonine wall, Scotland." Thesis, University of Bradford, 1991. http://hdl.handle.net/10454/3374.

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A series of recent excavations on the 2nd Century AD Antonine frontier forts of the Midland Scottish valley, have produced results which suggest that the army was making its own pottery on an appreciable scale. This was at a time when pottery production was thought to have moved almost exclusively into civilian hands. The possible local ware groups identified by the excavations were largely independent of firm source indicators such as kiln and waster material and the number of available samples was often-small. A program of Neutron Activation and Thin Section petrological analyses

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26

Sauchelli, Toran Marc. "Mass transport and fouling of novel forward osmosis thin-film composite membranes." Doctoral thesis, Universitat de Girona, 2019. http://hdl.handle.net/10803/670169.

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Forward osmosis (FO) is known to be particularly efficient at treating impaired water sources with a high fouling potential. In the context of water reuse FO is being introduced as a robust pre-treatment process, usually as a first barrier prior to a reverse osmosis (RO) step. The commercialisation of FO however hinges on the development higher permeability membranes and a recent breakthrough came with the introduction of thin-film composite (TFC) membranes. While promising state-of-the-art TFC membranes have been successfully fabricated and tested at the pilot-scale, their performance in FO i

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Gillings, Mark. "Ceramic production in a Roman frontier zone : a comparative Neutron Activation and Petro-Textural analysis of Roman coarse pottery from selected sites on and around the Antonine wall, Scotland." Thesis, University of Bradford, 2009. http://hdl.handle.net/10454/3374.

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A series of recent excavations on the 2nd Century AD Antonine frontier forts of the Midland Scottish valley, have produced results which suggest that the army was making its own pottery on an appreciable scale. This was at a time when pottery production was thought to have moved almost exclusively into civilian hands. The possible local ware groups identified by the excavations were largely independent of firm source indicators such as kiln and waster material and the number of available samples was often-small. A program of Neutron Activation and Thin Section petrological analyses was underta

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28

Turull, López Marta. "Novel developments in the Diffusive Gradient in Thin films (DGT) technique for the determination of bioavailable mercury and other trace metals in aquatic and terrestrial environments." Doctoral thesis, Universitat de Girona, 2019. http://hdl.handle.net/10803/668780.

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This thesis is focused on the use of the Diffusive Gradient in thin film (DGT) technique for the analysis of bioavailable mercury and other trace metals in water and soil. Homemade DGT devices using a selective ion-exchange resin, and a polyacrylamide gel as the diffusive layer using an open resin (>5 nm), have been used to determine the labile Hg in different aquatic systems, concretely in the Ebro river (Spain) and Tully river (Australia). Besides, a new design of DGT using a bis-acrylamide as a restricted layer (<1 nm) has been performed to determine different species of Hg in agricultural

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Andrade, Carlos Francisco Ferreira de. "Avaliação in situ da especiação de metais no estuário da Lagoa dos Patos utilizando o sistema DGT." reponame:Repositório Institucional da FURG, 2005. http://repositorio.furg.br/handle/1/3525.

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Dissertação(mestrado) - Universidade Federal do Rio Grande, Programa de Pós-Graduação em Oceanografia Física, Química e Geológica, Instituto de Oceanografia, 2005.<br>Submitted by Cristiane Silva (cristiane_gomides@hotmail.com) on 2013-01-28T12:25:06Z No. of bitstreams: 1 2005_Carlos_de_Andrade.pdf: 1453728 bytes, checksum: 61ca4996bcaf13cd39bc0418f7b5608b (MD5)<br>Approved for entry into archive by Bruna Vieira(bruninha_vieira@ibest.com.br) on 2013-06-13T18:51:07Z (GMT) No. of bitstreams: 1 2005_Carlos_de_Andrade.pdf: 1453728 bytes, checksum: 61ca4996bcaf13cd39bc0418f7b5608b (MD5)<br>Made ava

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Sojoudi, Hossein. "The synthesis, doping, and characterization of graphene films." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/50125.

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Graphene, a two-dimensional counterpart of three-dimensional graphite, has attracted significant interest, due to its distinctive electrical and mechanical properties, for developing electronic, optoelectronic, and sensor technologies. In general, doping of graphene is important, as it gives rise to p-type and n-type materials, and it adjusts the work function of the graphene. This adjustment is necessary in order to control charge injection and collection in devices such as solar cells and light emitting devices. Current methods for graphene doping involve high temperature process or interact

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Baccaro, Alexandre Luiz Bonizio. "Aperfeiçoamento de sistema de preparo de amostras em microescala por processamento fotoeletrocatalítico de matéria orgânica em célula eletroquímica irradiada com UV-LED, visando à análise de traços de metais." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/46/46136/tde-28052012-104226/.

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A aplicação do processo de fotoeletrocatálise à eliminação de interferentes orgânicos em baixa concentração na eletroanálise de metais foi abordada tomando o quelato Cu(II)-EDTA como sistema modelo e o restabelecimento da onda voltamétrica do cobre como indicador de efetividade. Desenvolveram-se células eletroquímicas de camada delgada (espessura de 600 micrômetros) nas quais alguns microlitros de amostra são tratados sobre um eletrodo modificado com TiO2 (tipo P25, rico em anatase), cuja superfície é irradiada através de uma janela por um LED (370 nm). Foram construídos e avaliados os seguint

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Ståhl, Sally. "Strokekedjan från början till slut : En etnografisk studie om farlighet och tid i en akut vårdkedja." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-78636.

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Varje år drabbas 30 000 svenskar av stroke, vilket innebär stora personliga omställningar och stora kostnader för samhället. Den mest effektiva behandlingen, trombolys, måste ges så snart som möjligt för att ha god effekt. Samtidigt som det är av största vikt att ta reda på om patienten har några differentialdiagnoser som gör behandlingen riskfylld. Den här studien undersöker hur strokekedjan går till och vilka faktorer som påverkar beslutsfattandet. Studien är baserad på etnografiska fältstudier på fyra svenska sjukhus och materialet är analyserat med metoder från sammansatta kognitiva syste

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Willemse, Chandre Monique. "Nanocomposite-graphene based platform for heavy metal detection." Thesis, University of the Western Cape, 2010. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_8123_1323852117.

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This study reports the synthesis of graphene by oxidizing graphite to graphite oxide using H2SO4 and KMnO4 and reducing graphene oxide to graphene by using NaBH4. Graphene was then characterized using FT-IR, TEM, AFM, XRD, Raman spectroscopy and solid state NMR. Nafion-Graphene in combination with a mercury film electrode, bismuth film electrode and antimony film electrode was used as a sensing platform for trace metal analysis in 0.1 M acetate buffer (pH 4.6) at 120 s deposition time, using square-wave anodic stripping voltammetry (SWASV). Detection limits were calculated using 3Ïblank/slope

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Reichstädter, Marek. "Využití techniky difúzího gradientu v tenkém filmu v analýze potravin a v environmentální analýze." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2020. http://www.nusl.cz/ntk/nusl-433012.

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Tato dizertační práce zkoumá vývoj techniky difúzního gradientu v tenkém filmu (DGT) pro stanovení rtuti (Hg) a dalších stopových kovů a dále rozšířené možnosti použití této techniky. Technika DGT je v této práci vyvinuta pro stanovení Hg a dalších stopových prvků v různých kapalných médiích. Dvě rozdílná sorpční média specifická pro rtuť byla testována pro použití v technice DGT – Purolite S924 a cysteinem modifikovaná aminopropyl silika (CAPS). Purolite S924 je komerčně dostupný chelatační iontoměnič, CAPS byla připravena v laboratorních podmínkách imobilizací cysteinu na 3-aminopropyl funkc

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Duarte, Cueva Franklin. "Economía digital, sitios web y PYMES del sector artesanía en el Perú." Pontificia Universidad Católica del Perú, 2012. http://repositorio.pucp.edu.pe/index/handle/123456789/114901.

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The companies are operating in complex, dynamic and uncertain environments that it difficult to compete. The e-economy each time has a major presence in business world, then, the small entrepreneurs must design strategies based on Information and Communication Technologies (ICTs), particularly the use of Internet, to improve company performance. Thus, the efficient implementation of websites is a mechanism that should exploit exporting small and medium-sized enterprises (SMEs) or with export potential, of the handicrafts industry, to communicate desired company image and optimize customer serv

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Benabdallah, Mohammed. "Spéciation de l'étain en traces dans l'environnement aquatique par spectrophotométrie d'absorption atomique électrothermique." Pau, 1987. http://www.theses.fr/1987PAUU3026.

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La technique de l'absorption atomique au four graphite est utilisée seule pour le dosage de l'étain total et associée à la chromatographie liquide à haute performance pour la spéciation; un couplage automatisé original a été mis au point, puis appliqué à l'étude de la séparation en chromatographie d'exclusion stérique de composés organostanniques de la famille des butylétains. La limite de détection de ce système est de 25 mg d'étain en tête de colonne. Une modification du passeur injecteur automatique d'échantillons utilisé dans cette étude a été concue. Elle a permis de faire passer le rappo

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Filho, Reinaldo Cardenuto. "O cinema político de Leon Hirszman (1976-1981): engajamento e resistência durante o regime militar brasileiro." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/27/27161/tde-02022015-160846/.

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O objetivo central desta tese é estudar o percurso artístico e intelectual de Leon Hirszman a partir dos filmes Que país é este? (1976-77), ABC da greve (1979- 90) e Eles não usam black-tie (1981). Discutindo as relações entre cinema e História, a pesquisa se concentra nas práticas culturais, estéticas e ideológicas do realizador, procurando analisar as interpretações que ele mobilizou em torno do Brasil durante a vigência do regime militar. A despeito de Hirszman ter consolidado a sua trajetória como integrante do Cinema Novo, questão que percorre as páginas deste doutorado, propõe-se também

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Boukhalfa, Lakhdar. "Diversité et signification géodynamique des complexes ultrabasiques/basiques d'âge proterozoïque supérieur du rameau oriental pharusien de la chaîne panafricaine (Hoggar, Algérie)." Nancy 1, 1987. http://www.theses.fr/1987NAN10040.

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Présentation de plusieurs complexes, répartis en trois types, d'après leurs caractères pétrographiques, minéralogiques et géochimiques. Chaque type correspond à une étape géodynamique particulière de l'évolution du domaine pharusien. On propose un modèle géodynamique de mise en place en système de bassins intrasialiques

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Green, Heather F. "Casting no shadow : overlapping soilscapes of European-Indigenous interaction in northern Sweden." Thesis, University of Stirling, 2012. http://hdl.handle.net/1893/13133.

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The Sámi’s past activities have been documented historically from a European perspective, and more recently from an anthropological viewpoint, giving a generalised observation of the Sámi, during the study period of AD200-AD1800, as semi-nomadic hunter gatherers, with several theories suggesting that interaction with Europeans, through trade, led to the adoption of European activities by certain groups of the Sámi (Eiermann, 1923; Paine, 1957; Manker and Vorren, 1962; Bratrein, 1981; Mathiesen et al, 1981; Meriot, 1984). However, there is almost no information on the impact the Sámi had on the

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Bouabsa, Lakhdar. "Intrusions granitiques à albite et topaze : Minéralisations stanno-wolframifères et altérations hydrothermales associées, l'exemple du hoggar central, Algérie." Nancy 1, 1987. http://www.theses.fr/1987NAN10329.

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Le présent travail met l'accent sur la dualité du magmatisme de cette région du Hoggar Central. Outre un granite banal à biotite (parfois amphibole) constituant l'ossature principale des granites post orogéniques (Taourirts), il est mis en évidence un type particulier de granite spécialisé à albite, topaze et protolithionite comme paragénèse I. Ce magmatisme évolué est sans liaison génétique avec le précèdent comme le soulignent les contacts intrusifs marqués par des stockscheiders et les discontinuités géochimiques au niveau des éléments majeurs et tracés. La liaison spatiale et génétique des

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Moulahoum, Omar. "Dualité du magmatisme d'âge pan-africain : Aspects structuraux et pétrologiques des granites subalcalins et alumineux de la région de Tamanrasset (Hoggar central, Algérie." Nancy 1, 1988. http://www.theses.fr/1988NAN10049.

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Durant l'orogène du "Pan-Africain" (~ 600 Ma), la région du Hoggar central, à l'instar de l'ensemble du Bouclier Touareg, a été intensément affectée. Cet évènement est accompagné de la mise en place d'ensembles magmatiques variés. Dans la région de Tamanrasset, deux magmatismes de nature différente sont mis en évidence : magmatisme subalcalin et magmatisme alumineux. Le premier est représenté par les massifs syn à tardi-orogéniques (Anfeg - Tifferkit), voire post-orogénique (Aheleheg') tandis que le second est exclusivement constitué par les plutons post-orogéniques (In-Tounine et intrusions g

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Peck, Mikaere Michelle S. "Summerhill school is it possible in Aotearoa ??????? New Zealand ???????: Challenging the neo-liberal ideologies in our hegemonic schooling system." The University of Waikato, 2009. http://hdl.handle.net/10289/2794.

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The original purpose of this thesis is to explore the possibility of setting up a school in Aotearoa (New Zealand) that operates according to the principles and philosophies of Summerhill School in Suffolk, England. An examination of Summerhill School is therefore the purpose of this study, particularly because of its commitment to self-regulation and direct democracy for children. My argument within this study is that Summerhill presents precisely the type of model Māori as Tangata Whenua (Indigenous people of Aotearoa) need in our design of an alternative schooling programme, given that self

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Wang, Yijun. "From Tin to Pewter: Craft and Statecraft in China, 1700-1844." Thesis, 2019. https://doi.org/10.7916/d8-bmjh-6f20.

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This dissertation examines the transmissions of technology and changes in the culture of statecraft by tracing the itinerary of tin from ore in mines to everyday objects. From the eighteenth century, with the expansion of the Qing empire and global trade, miners migrated from the east coast of China to the southwest frontiers of the Qing empire (1644-1912) and into Southeast Asia, bringing their mining technology with them. The tin from Southeast Asia, in return, inspired Chinese pewter artisans to invent new styles and techniques of metalworking. Furthermore, the knowledge of mining, metalwor

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Ho, Wai Fun David. "Government trade intervention, thin markets and international price fluctuations : the case of the world rice market." Thesis, 1990. http://hdl.handle.net/10125/9623.

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Fa, Jeng Chueu —., and 鄭春發. "Determination of Trace Tin by Automated Flow Injection - Constant Current Adsorptive Potentiometric Stripping Analysis." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/72968547793296492444.

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Domingos, R. F. "Trace metal speciation using thin layer techniques and stripping chronopotentiometry." Doctoral thesis, 2005. http://hdl.handle.net/10400.1/386.

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Tese dout., Química, Universidade do Algarve, 2006<br>Foi desenvolvido um critério de labilidade para a interacção de metais vestigiários com dispersões coloidais, e foi testado com sucesso para a especiação dinâmica de metais vestigiários usando a cronopotenciometria de redissolução anódica com variação do potencial de deposição (SSCP). A habilidade da SSCP para determinar o coeficiente de difusão de complexos metálicos lábeis foi estabelecida usando nanopartículas de látex, de ouro e de prata de vários tamanhos, e substâncias húmicas. A avaliação da especiação dinâmica de metais vestigiári

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丁新吾. "A study on the Hong Kong re-export trade for the ten years : 1980-1990." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/q3g2n9.

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Chen, Wei-Chih, and 陳威志. "Pervading Tian Xia? Epistemological Lessons Derived from the Study of Tributary Trade System by Hamashita Takeshi." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/24600401985598013223.

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碩士<br>國立臺灣大學<br>政治學研究所<br>96<br>It has been a long dispute that whether political science or so-called the study of politics are provided with characteristics of science. Such argumentation of reflection upon traditional methodology in political science does not merely begin with the book Human Nature in Politics by Graham Wallas in 1902, or The Process of Government by Arthur Bently published in the same year. One can make his assertion that this argumentation is more relevant to the differentiation of idealism within ontology rather than the emergence of behaviorism. The Third Debate of

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Lo, Pao-Li, and 羅寶麗. "Determination of Trace Heavy Metals Contained in the Ten Commercial Chinese Herbs." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/41166953839660649991.

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碩士<br>高雄醫學大學<br>藥學研究所碩士在職專班<br>92<br>Six heavy metal trace elements (As, Hg, Cu, Pb, Cd, and Zn) in general Chinese herbs were analyzed by Flame Atomic Absorption Spectrophotometer (FAAS). Ten Chinese herbs were focused and studied by a variety of methods (appearance observation, microscopic examination of tissue pieces, and thin layer chromatography) for the quality and matrix confirmation. In addition, the amounts variation of the six heavy metal trace elements in the herbs planted in north, middle, and south Taiwan were investigated. Our results revealed that all the amounts of the 6 trace

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Li, Yinxiao. "Recognition and Manipulation of Deformable Objects Using Predictive Thin Shell Modeling." Thesis, 2016. https://doi.org/10.7916/D8V69JJ2.

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This thesis focuses on the task of dexterous manipulation of deformable objects, and in particular, clothing and garments. The task of manipulating deformable objects such as clothing can be broken down into a series of sub-tasks: (1) perceive and pick up garment, and then identify garment and recognize its pose; (2) using a manipulation strategy, regrasp the object to put it into a canonical state; (3) scan the surface of the object to find wrinkles, and use an iron to remove the wrinkles; (4) starting from the wrinkle-free state, fold the garment according to pre-planned sequence of manipula

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