Dissertations / Theses on the topic 'ITI'
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Gradl, Christian. "Einflussfaktoren auf den periimplantären Knochenabbau von ITI Implantaten in augmentierten Kieferhöhlen." Diss., lmu, 2009. http://nbn-resolving.de/urn:nbn:de:bvb:19-103854.
Full textRoßmann, Christian [Verfasser]. "Langzeitergebnisse enossaler dentaler Implantate am Beispiel des ITI-Implantatsystems / Christian Roßmann." Kiel : Universitätsbibliothek Kiel, 2015. http://d-nb.info/1078898359/34.
Full textMoysés, Glauco Pereira. "Influência do formato do pilar na capacidade retentiva de copings metálicos cimentados sobre implantes." Universidade de Taubaté, 2008. http://www.bdtd.unitau.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=473.
Full textThis study evaluated the influence of the abutment design on the retention of cementretained, implant-supported metallic copings. Two abutments of the same system, with the same height, indications and total occlusal convergence, but of different designs were evaluated. Ten RN SynOcta abutments and ten RN solid titanium abutments both manufactured by Straumann USA and indicated for cement-retained single crowns and fixed partial dentures were tightened to 35Ncm on twenty implant analogs previously placed in resin blocks. Twenty plastic burnout copings were waxed, included, cast and machined by the same operator. After inspected under a stereomicroscope, the copings were cemented (Temp Bond NE) with load of 5 kg maintained for ten minutes. After this, the assemblies were stored for 24h in 100% humidity at room temperature and subjected to a pull-out test at a crosshead speed of 5 mm/min until the displacement of the metallic copings. The load required to dislodge each coping was recorded in kilogram-force and the data were statistically analyzed using the T student test for independent samples. The mean load necessary load to dislodge the metallic copings showed by SynOcta abutments (11,19 kg) was statistically higher than the one for the solid abutments (10,18 kg). With the limitations of this study, we can conclude that the design of the abutment influence significantly the retention of metallic copings.
Hope, Chris. "Errors in pigeons' memory for number, effects of ITI and DI illumination." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ65198.pdf.
Full textBorell, Phillip John. "He iti hoki te mokoroa: Maori Contributions to the Sport of Rugby League." Thesis, University of Canterbury. Aotahi: School of Maori and Indigenous Studies, 2012. http://hdl.handle.net/10092/7052.
Full textSARACENO, PIER PAOLO. "THE INTEGRATED TERRITORIAL INVESTMENT (ITI) AS A TOOL FOR GOVERNING THE RURALURBAN LINKAGES: EVIDENCE FROM POLAND." Thesis, Blekinge Tekniska Högskola, Institutionen för fysisk planering, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-12919.
Full textPiva, Frank. "L'inter-alpha-trypsine inhibiteur (iti) : preparation a l'echelle industrielle ; etude de sa degradation in vitro par l'elastase leucocytaire humaine." Lille 2, 1995. http://www.theses.fr/1995LIL2P253.
Full textWellman, David Allen, and mikewood@deakin edu au. "Towards an integration of theories of achievement motivation." Deakin University. School of Psychology, 2001. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20051017.123821.
Full textMartin-Vandelet, Nathalie. "Inhibiteur inter-alpha de la trypsine : assemblage et sécrétion des chaînes recombinantes dans les cellules COS." Rouen, 1998. http://www.theses.fr/1998ROUES009.
Full textShah, Hamzei G. Hossein. "Decision tree learning for intelligent mobile robot navigation." Thesis, Loughborough University, 1998. https://dspace.lboro.ac.uk/2134/6968.
Full textAlcena, Reynolds. "Information Technology Infrastructure: Global Economy and National Development in Haiti." ScholarWorks, 2018. https://scholarworks.waldenu.edu/dissertations/4830.
Full textCarlson, William E. "Evaluating Hydrologic Controls on Fish and Macroinvertebrate Communities in Ohio’s Western Allegheny Plateau." Ohio University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1149193823.
Full textBotha, Elsabe. "Information technology governance frameworks in higher education in South Africa : a paradigm shift / Elsabe Botha." Thesis, North-West University, 2012. http://hdl.handle.net/10394/8657.
Full textThesis (MBA)--North-West University, Potchefstroom Campus, 2013
Karoussis, Ioannis K. "A 10-year prospective cohort study of the ITI® dental implant system : A. effect of implant design on survival and success rates: a comparison between hollow-screws, hollow-cylinders and angulated hollow-cylinders : B. long-term implant prognosis in patients with and without a history of chronic periodontitis /." [S.l.] : [s.n.], 2002. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.
Full textMarcin, Juraj. "Metriky kvality řízení IT." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2019. http://www.nusl.cz/ntk/nusl-403116.
Full textRudqwist, Lucas, and Max Magnusson. "Framtidens reseplanerare : Hur man designar en mobil, dynamisk & multimodal reseplanerare." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188828.
Full textThis thesis takes a look at the future of mobile, dynamic and multimodal travel planners by asking the questions: How can a multimodal travel planner with data and information from existing resources be designed and function in Stockholm County? How do you design a well-functioning mobile travel planner that delivers dynamic multimodal travel with high usability? What information and what systems are publicly accessible today and what information must the future travel planner create by itself? By creating prototypes and by usability testing in three steps we tie previous research together with available data and information publicly accessible in Stockholm County. The goal of this is to show how a future travel planner can look and work. The final design of the travel planner of tomorrow shows how seamless and simple it will be to guide the user to multimodal travel. All this by connecting traffic information systems, electronic payment methods and smartphones built in resources (e.g. its GPS/A-GPS). As a complement to the design we present three key components that, according to this study, are the most critical to succeed with a future travel planner.
Meng, Dong. "Approximate Message Passing for Multi-Carrier Transmission over Doubly Selective Channels." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1339602506.
Full textCosta, Bruna de Araújo. "Síntese, caracterização e estudo termoanalítico dos tereftalatos de térbio (III), disprósio (III), hólmio(III), érbio (III), túlio (III), ítérbio (III), lutécio (III) e ítrio(III)." Universidade Federal de Goiás, 2015. http://repositorio.bc.ufg.br/tede/handle/tede/4919.
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In this work the synthesis of the heavy lanthanides and yttrium were carried out, using the direct addition of the sodium terephthalate in the respectives metallic chloride solutions. The synthesized compounds were characterized by simultaneous Thermogravimetry and differential scanning calorimetry analysis (TG-DSC), differential scanning calorimetry (DSC), Fourier Transform Infrared Spectroscopy (FTIR), thermogravimetric analyses coupled to Fourier Transform Infrared spectroscopy (TG-FTIR), EDTA complexometry and X ray powder Diffractometry. From the data, it was possible to obtain the general formula of each compound (Ln2(TFta)3.nH2O, where Ln = Tb(III), Dy(III), Ho(III), Er(III), Tm(III), Yb(III), Lu(III) and Y(III), TFta = terephthalate, and n = 4,5 (Tb, Dy and Ho), 4,0 (Er, Tm and Y), 5,0 (Yb) and 6,5 (Lu)), as well as unreported information about the thermal properties, in air atmosphere, thermal stability; molar dehydration enthalpy; main evolved gases from thermal decomposition (H2O, CO2 and CO), the coordination mode between metal and ligand and performing the comparison of the results of X -ray diffraction of the compounds synthesized by the powder method using and the single crystal obtained by hydrothermal synthesis reported in the literature.
A pesquisa na área de compostos de coordenação com ligantes à base de ácidos carboxílicos aromáticos e metais os lantanídeos e ítrio tem sido recorrente devido as suas promissoras aplicabilidades. O presente trabalho tem como objetivo realizar as sínteses dos tereftalatos de lantanídeos pesados e ítrio pelo método direto entre soluções de tereftalato de sódio e os respectivos cloretos metálicos e caracterização dos mesmos por meio das técnicas de análise termogravimétrica e calorimetria exploratória diferencial simultânea (TG-DSC), Calorimetria exploratória diferencial (DSC), Espectroscopia de Infravermelho por Transformada de Fourrier (FTIR), Complexometria por EDTA e Difratometria de raio X pelo método do pó. A partir das informações obtidas desse estudo termoanalítico detalhado, em atmosfera de ar, foi possível obter informações inéditas, como a fórmula geral Ln2(TFta)3.(H2O)2.nH2O, onde Ln corresponde aos Tb(III), Dy(III), Ho(III), Er(III), Tm(III), Yb(III), Lu(III) e Y(III), TFta o tereftalato e n= 2,5 (Tb, Dy e Ho), 2,0 (Er, Tm e Y), 3,0 (Yb) e 4,5 (Lu); estabilidade térmica; grau de hidratação dos compostos; entalpia molar média por molécula de água; indicar os principais produtos gasosos produzidos pela decomposição térmica (H2O, CO2 e CO); sugerir coordenação em ponte entre entre metal e o ligante e realizar a comparação dos resultados de difratometria de raio x dos compostos sintetizados pelo método do pó com os monocristais obtidos por síntese difusão lenta apresentados na literatura.
Eckhart, Eric Ashton. "A search for charmless baryonic B meson decays at CLEO." Columbus, OH : Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1054568796.
Full textTitle from first page of PDF file. Document formatted into pages; contains xv, 133 p.: ill. Includes abstract and vita. Advisor: Richard D. Kass, Dept. of Physics. Includes bibliographical references (p. 132-133).
Nunes, Wilhan Donizete Gonçalves. "Síntese, caracterização e estudo termoanalítico dos isoftalatos de lantânio (III), cério (III), praseodímio (III), neodímio (III), samário (III), európio (III) e gadolínio (III)." Universidade Federal de Goiás, 2015. http://repositorio.bc.ufg.br/tede/handle/tede/4777.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
In the last years the interest in the chemistry of coordination compounds of polycarboxylic acids and lanthanides or transition metals has substantially increased, due to their interesting characteristics, such as gas storage (Metal-organic frameworks compounds), luminescence and magnetic properties. A literature survey reveals few studies investigating the properties of lighter lanthanide coordination compounds obtained by soft chemistry routes, and mainly the study of their thermal properties in air atmosphere. In this work the reaction between sodium isophthalate and lighter lanthanides solutions (La – Gd) except Pm, led to the formation of two new coordination compounds, and five already reported in the literature, whose thermal behavior and infrared spectra was investigated. The compounds was characterized by simultaneous Thermogravimetric and differential scanning calorimetry analysis (TG-DSC), differential scanning calorimetry (DSC), Fourier Transform Infrared Spectroscopy (FTIR), thermogravimetric analyses coupled to Fourier Transform Infrared spectroscopy (TG-FTIR) and EDTA complexometry. With the TG-DSC and TG-FTIR data was possible to determinate the general formula of compounds (Ln2(L)3.nH2O, where Ln = La – Gd, except Pm, L = isophthalate, n varies from 2 to 13,5), thermal stability and molar dehydration enthalpy per water molecule, as well as the main evolved gases during thermal decomposition (H2O, CO2 and CO). The FTIR spectra suggest that metal-ligand coordination occurs in the bridging bidentate mode.
Nos últimos anos, tem surgido um grande interesse na química dos compostos de coordenação de ácidos dicarboxílicos com metais de transição ou lantanídeos, devido a sua aplicabilidade em compostos de estrutura molecular porosa (Metal-organic frameworks) e interessantes propriedades luminescentes. Uma revisão na literatura revela a falta de trabalhos estudando de forma sistemática as propriedades térmicas de compostos de coordenação de lantanídeos leves com o ligante isoftalato em atmosfera de ar, principalmente obtidos por meio de vias sintéticas classificadas como brandas. Neste trabalho, foi realizada a síntese dois novos compostos de coordenação, e cinco já reportados pela literatura em diferentes trabalhos, utilizando a metodologia de reação direta entre soluções de ácido isoftálico (ácido 1,3- benzenodicarboxílico) e de lantanídeos (La – Gd) exceto Pm. Os compostos sintetizados foram caracterizados e estudados através das técnicas de análise termogravimétrica e calorimetria exploratória diferencial simultânea (TG-DSC), Calorimetria exploratória diferencial (DSC) e Espectroscopia de Infravermelho por Transformada de Fourrier (FTIR) e Complexometria por EDTA. A partir das curvas TG-DSC e TG-FTIR foi possível a determinar a estequiometria dos compostos, com fórmula geral Ln2(L)3.nH2O (Ln = La a Gd, exceto Pm, L = isoftalato) n variando de 2 a 13,5, bem como estabilidade térmica, grau de hidratação dos compostos e os principais produtos gasosos formados pela decomposição térmica (H2O, CO2 e CO). Através das análises de FTIR pode-se sugerir que o tipo de coordenação entre metal e o ligante é bidentado em ponte.
Simancas, Coloma Raquel. "Síntesis de nuevos materiales zeolíticos empleando agentes directores de estructura fosforados." Doctoral thesis, Universitat Politècnica de València, 2015. http://hdl.handle.net/10251/52025.
Full text[ES] La presente tesis doctoral se centra en la síntesis de nuevas estructuras zeolíticas empleando como agentes directores de estructura compuestos que contienen fósforo y el estudio de la influencia de la presencia de fósforo en la capacidad de adsorción y en las propiedades ácidas de las zeolitas. Las bases de fosfaceno y cationes aminofosfonio empleados en este trabajo han permitido obtener zeolitas con nuevas estructuras cristalinas (ITQ-45, ITQ-52 e ITQ-58), así como desarrollar nuevas rutas de síntesis de zeolitas conocidas ampliando el rango de composiciones (DON, RTH, ITE, STF) y obtener por primera vez el análogo sintético (ITQ-47) de la zeolita natural boggsita (BOG).
[CAT] La present tesi doctoral es centra en la síntesi de noves estructures zeolítiques emprant com agents directors d'estructura compostos que continguen fòsfor, i la influència de la presència de fòsfor en la capacitat d'adsorció i en la fortalesa àcida de les zeolites. Les bases de fosfazè i cations aminofosfoni emprats en aquest treball han permès obtindre zeolites amb noves estructures cristal¿lines (ITQ-45, ITQ-52 e ITQ-58), així com desenvolupar noves rutes de síntesi de zeolites conegudes ampliant el rang de composicions (DON, RTH, ITE, STF) i obtindre per primera vegada l'anàleg sintètic (ITQ-47) de la zeolita natural boggsita (BOG).
Simancas Coloma, R. (2015). Síntesis de nuevos materiales zeolíticos empleando agentes directores de estructura fosforados [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/52025
TESIS
Roche, Jason T. "Conrad III and the Second Crusade in the Byzantine Empire and Anatolia, 1147." Thesis, St Andrews, 2008. http://hdl.handle.net/10023/524.
Full textwennmyr, hugo leonardo alexander. "ini." Thesis, KTH, Arkitektur, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-146069.
Full textMuñoz, Muñoz Juan Pablo. "Separación de lantano (III), cerio (III), praseodimio (III) y neodimio (III) mediante extracción por solventes utilizando extractantes organofosforados." Tesis, Universidad de Chile, 2011. http://www.repositorio.uchile.cl/handle/2250/115867.
Full textEn esta Memoria de Título se estudió la extracción y separación de lantano (III), cerio (III), praseodimio (III) y neodimio (III) mediante extracción por solventes utilizando como agentes transportadores los extractantes comerciales D2EHPA, PC88A, LIX 272 y CYANEX 301. El análisis de las curvas de especiación química de los elementos tierras raras (ETR) en fase acuosa en función del pH permiten establecer que en el rango de pH de trabajo los iones de La, Ce y Pr se encuentran principalmente como iones complejados con nitrato. Sin embargo, entre pH 1 y 2 se presenta una competencia con la especie ETR-sulfato. Debido a que el ión nitrato presenta un poder ligante muy débil, en la práctica es posible considerar que los iones ETR se encuentran como especies libres cuando se presenta una competencia frente a un ligante más fuerte, tal como sería en el caso de los extractantes organofosforados, mientras que, la especie ETR-sulfato sería la única especie que podría interferir en la extracción de los iones de ETR. Los experimentos de extracción por solventes realizados entre cada uno de los iones metálicos de ETR con cada uno de los extractantes propuestos, se llevaron a cabo considerando las siguientes variables que afectan al proceso: la concentración de cada uno de los extractantes en la fase orgánica, de cada ión metálico presente en la fase acuosa y el pH de la solución acuosa de alimentación. Un análisis de los resultados obtenidos para la variación en la concentración de extractante indicó que, los valores más altos de extracción se logran cuando se utilizan 40 mM. Los resultados varían dependiendo del ión metálico observándose siempre las mayores extracciones para Pr, y en menor grado consecutivo Nd, Ce y La. Los resultados obtenidos para la variación de pH inicial indicaron que, en general, el porcentaje de extracción se incrementa con el aumento del pH inicial de la solución acuosa de alimentación en todos los experimentos realizados. En el caso de los extractantes D2EHPA y PC88A se alcanzaron extracciones sin una distinción práctica entre cada uno de los iones ETR. Mientras que, en el caso de los extractantes LIX 272 y CYANEX 301 se observó que hay diferenciación clara en el grado de extracción para los distintos ETR. Los resultados obtenidos para la variación en la concentración de ión metálico inicial permitieron aseverar que, en general, el grado de extracción disminuye con el incremento de la concentración de ión metálico en la solución de alimentación inicial para los cuatro extractantes estudiados. Los experimentos de retroextracción de los iones metálicos de ETR presentaron una tendencia moderada a la disminución con el incremento de la concentración de H2SO4 en la fase acuosa para los todos los complejos ETR-extractante estudiados. Sólo se observó que en el caso de los complejos ETR-LIX 272 se lograron porcentajes de retroextracción intermedios que podían ser utilizados en una ruta de separación de los iones ETR. El análisis de los estudios de equilibrio permitió apreciar claramente que la extracción de Pr es la más favorecida en todos los casos, y en menor grado consecutivo Nd, Ce y La. Adicionalmente, se pudo observar que desde el punto de vista de los extractantes el D2EHPA es el que más favorece la reacción de extracción y en menor grado consecutivo PC88A, LIX 272 y CYANEX 301. A partir de un análisis de todos los datos obtenidos se pudo deducir que el extractante LIX 272 cumplió de mejor manera con el requisito de extraer preferentemente alguno de los iones de ETR en ciertas condiciones y, de este modo, poder plantear de esa manera alguna posible ruta de separación. Los estudios cinéticos de extracción indicaron que en general es el Pr el que reacciona más rápidamente, y el La el que reacciona más lentamente, con todos los extractantes. Del mismo modo, se observa que el extractante que reacciona de manera más rápida con los iones metálicos es el D2EHPA y en menor grado consecutivo PC88A, LIX 272 y CYANEX 301. Por otro lado, los experimentos cinéticos de retroextracción indicaron que los complejos ETR-D2EHPA y ETR-PC88A son los que más rápidamente liberan los iones de ETR. Asimismo, el complejo ETR-CYANEX 301 es el que los libera más lentamente. La ruta de separación de iones metálicos en dos etapas propuesta en este estudio utilizando como extractante el LIX 272 cumple en cierta medida con el objetivo planteado. En la primera etapa de extracción se logró incrementar la pureza del La en la fase acuosa hasta un 40%, aproximadamente. Una proyección de este resultado en 8 contactos permitiría obtener un refino constituido exclusivamente por La, alcanzando a aislar cerca del 70% del La inicial. En la segunda etapa de la ruta de separación, que considera la retroextracción de los complejos ETR-LIX 272, se logró aislar cerca del 74% del Ce inicial con una pureza superior al 98%. Una proyección de 3 contactos para esta etapa permitiría obtener una fase acuosa final con un 99,97% de pureza de Ce y con un rendimiento global del proceso de un 54,8%. Esta ruta de separación por equilibrios deja el problema de separación relegado solamente a la dupla Pr y Nd. Por otro lado, la diferencia en un orden de magnitud de las constantes cinéticas de retroextracción para los complejos Pr-LIX 272 y Nd-LIX 272 permitiría proyectar una separación de ambos iones en el tiempo
The extraction and separation of lanthanum (III), cerium (III), praseodymium (III), and neodymium (III) was studied by means of solvent extraction using D2EHPA, PC88A, LIX 272, and CYANEX 301 as extractant. The analysis of the chemical speciation curves of rare earth elements (REE) in aqueous phase as a function of pH allow to establish that in the working pH range the lanthanum, cerium, and praseodymium ions are complexed mainly with nitrate. However, between pH 1 and 2 a competition with REE-sulfate species is observed. Due to the nitrate ion has a very weak binding power, in fact it is possible to consider that REE ions are as free species when there is a competition with a stronger binder, as would be the case of organophosphorus extractants, while REE-sulfate species would be the only species that could interfere in the extraction of REE ions. The solvent extraction experiments, performed between each of the metal ions of REE with each of the proposed extractants, were carried out considering the following variables that affect the process: the concentration of each of the extractants in the organic phase, the concentration of each metal ion present in the aqueous phase and the pH of the aqueous feed solution. An analysis of the obtained results for the variation in the extractant concentration indicated that the highest values of extraction are achieved when using 40 mM. Results vary depending on the metal ion, always showing a preference for the praseodymium and in less consecutive degree for neodymium, cerium, and lanthanum. The obtained results for the variation of initial pH indicated that, in general, the extraction percentage increases with rising initial pH of the aqueous feed solution in all experiments. While in the case of extractants D2EHPA and PC88A no practical distinction between each of the REE ions were achieved, in the case of extractants LIX 272 and CYANEX 301 it was noted that there was clear difference in the degree of extraction for different REE. The results obtained for the variation in initial metal ion concentration allowed to assert that, in general, the extraction degree decreases while increasing metal ion concentration in the initial feed solution for the four extractants studied. Stripping experiments of REE metal ions showed a moderate tendency to decrease with increasing H2SO4 concentration in the aqueous phase for all REE-extractant complexes studied. It was observed that only in the case of REE-LIX 272 complex intermediate stripping percentages were achieved that could be used in a route of the separation of REE ions. The analysis of the equilibrium studies allowed to appreciate clearly that the extraction of praseodymium is the most favored in all cases, and less consecutive neodymium, cerium and lanthanum. Additionally, it was noted that from the point of view of the extractants, D2EHPA is which most favors the extraction reaction and in less consecutive degree for PC88A, LIX 272, and CYANEX 301. From an analysis of all the obtained data it is allowed to conclude that extractant LIX 272 is which better complies with the requirement for removing any REE ions preferably under certain conditions and, thus, can propound some possible separation route. Extraction kinetic studies indicated that in general praseodymium will react faster with all the extractants and also in general, lanthanum reacts more slowly. In the same way, it is noted that the extractant that react faster with the metal ions is D2EHPA and in less consecutive degree for PC88A, LIX 272, and CYANEX 301. Furthermore, stripping kinetic experiments indicated that REE-D2EHPA, and REE-PC88A complexes are the fastest in releasing REE ions. Likewise, REE-CYANEX 301 complex is that which release them more slowly. The separation route of metal ions in two stages proposed in this study using the LIX 272 extractant fulfill in some extent with the stated objective. In the first extraction step it was able to increase the purity of lanthanum in the aqueous phase up to 40%, approximately. A projection of this result for 8 contacts would obtain a refine constituted exclusively of lanthanum, reaching out to isolate about 70% of the original lanthanum. In the second stage of the separation route, that considers the stripping of REE-LIX 272 complexes, about 74% of the initial cerium was isolated with a purity exceeding 98%. A projection of 3 contacts for this stage would provide a final aqueous phase with a purity of 99.97% for cerium and an overall process yield of 54.8%. This equilibrium separation route leaves the separation problem relegated only to the couple praseodymium and neodymium. On the other hand, the difference in an order of magnitude of the stripping kinetic constants for Pr-LIX 272, and Nd-LIX 272 complexes would allow to project a separation of both ions at time
Chiesa, Sandra. "Hypomelanose de ito : a propos d'un cas avec revue de la litterature medicale : aspects cliniques et physiopathogeniques." Université Louis Pasteur (Strasbourg) (1971-2008), 1990. http://www.theses.fr/1990STR1M011.
Full textAhmed, Sadia. "Channel Analysis and Estimation and Compensation of Doppler Shift in Underwater Acoustic Communication and Mitigation of IFI, ISI in Ultra-wideband Radio." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5408.
Full textJagoš, Ľubomír. "Generování OFDM signálů pomocí generátoru libovolných průběhů LW410." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-316436.
Full textMeinel, Gotthard, and Ulrich Schumacher. "Flächennutzungsmonitoring III." Rhombos-Verl, 2011. https://slub.qucosa.de/id/qucosa%3A4658.
Full textDvořák, Petr. "ITIL trenažér." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2013. http://www.nusl.cz/ntk/nusl-236394.
Full textKarpin, George W. "Synthesis and Antimicrobial Activity of Half-Sandwich Ir(III), Rh(III), and Co(III) Complexes." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/79414.
Full textPh. D.
Zeng, Chao, Adrian Gonzalez-Alvarez, Emily Orenstein, Jim A. Field, Farhang Shadman, and Reyes Sierra-Alvarez. "Ecotoxicity assessment of ionic As(III), As(V), In(III) and Ga(III) species potentially released from novel III-V semiconductor materials." ACADEMIC PRESS INC ELSEVIER SCIENCE, 2017. http://hdl.handle.net/10150/623578.
Full textViljoen, Karen. "Ruthenium(III) aqua-chloro complex chemistry : the interconversion of the hexachlororuthenate(III) and aquapentachlororuthenate(III) species." Thesis, Stellenbosch : University of Stellenbosch, 2003. http://hdl.handle.net/10019.1/16458.
Full textENGLISH ABSTRACT: Ruthenium, as one of the platinum group metals, was investigated to determine the aquation rate constant of [RuCl6]3- and the anation rate constant of [RuCl5(H2O)]2-. This two reactions represent the equilibrium reaction [RuCl6]3- + H2O ⇄ [RuCl5(H2O)]2- + Cl-. The reactions were followed, using stopped-flow injection and UV/Visible spectroscopy, at different temperatures. The aquation and anation rate constants were determined with good precision and thermodynamic values for the reactions were calculated. The pseudo first order aquation rate constant, k65, was determined by calculation from the regression line as k65 = 52.1 (±3.7) x10-3 s-1 at 25°C. The activation energy, Ea, is 90.1 (±1.2) kJ.mol-1 and the enthalpy and entropy of activation is 87.7 (±1.2) kJ.mol-1 and 24.7 (±4.3) J.K-1.mol-1, respectively. The aquation rate constant was found to be dependent on the hydrochloric acid concentration, decreasing with increasing hydrochloric acid concentration. From the regression line at 25°C the second order anation rate constant, k56, was calculated as 1.62 (±0.11) x10-3 M-1s-1. The activation energy is 88.0 (±1.4) kJ.mol-1, with the enthalpy and entropy of activation 85.6 (±1.4) kJ.mol-1 and –11.2 (±4.7) J.K-1.mol-1, respectively. The influence of the hydrochloric acid concentration of the solution on the anation rate constant was not investigated. The equilibrium constant for the reaction studied was calculated from the rate constants for the aquation and anation reactions. The equilibrium constant, K6, was calculated as 0.0311 M-1 at 25°C. The equilibrium constant, when compared to literature, was found to be dependent on the hydrochloric acid concentration. It was then used, in conjunction with data from the literature, to construct two distribution diagrams. Distribution diagrams for the Ru(III) aquachloro species show between 79.9% to 72.3% [RuCl6]3- present in 12M HCl. The two distribution diagrams were very similar and it is not possible to resolve the issue of a final distribution diagram for the aqua-chloro Ru(III) system without further investigation into the all the other rate constants of the Ru(III) aqua-chloro species. The rate constants and thermodynamic values for the Ru(III) reaction were compared to corresponding data (from literature) for Rh(III) and Ir(III) because several comparisons between these platinum group metals have been noted. It was found that for both the aquation and anation rate constants, the following trend was observed: Ru(III) > Rh(III) > Ir(III). These differences are in certain cases exploited in the refining of these platinum group metals. Crystals of diethylenetriamine hexachlororuthenate(III) was prepared and characterised by x-ray crystallography and CHN analysis. The average Cl-Ru bond length for the crystal was 2.371 Å. The crystal structure was compared to hexaaquaaluminium hexachlororuthenate(III) tetrahydrate and diethylenetriamine hexachlororhodate(III). The metal-chloride bond lengths of all the crystals were found to be similar (2.350 Å – 2.375 Å). The diethylenetriamine crystal structures compared well. The conclusion was that the crystals prepared were diethylenetriamine hexachlororuthenate(III).
AFRIKAANSE OPSOMMING: Ruthenium(III), een van die platinum groep metaal-ione, is in hierdie studie ondersoek om die akwasie tempo konstante van [RuCl6]3- en die anasie tempo konstante van [RuCl5(H2O)]2- te bepaal. Dié twee reaksies verteenwoordig die ewewigsreaksie [RuCl6]3- + H2O ⇄ [RuCl5(H2O)]2- + Cl-. Die verloop van die reaksies is met behulp van UV/Sigbare spektroskopie by verskillende temperature gevolg. Die akwasie en anasie tempo konstantes is bepaal met goeie presisie en die termodinamiese konstantes van die reaksies is bereken. Die pseudo-eerste orde akwasie tempo konstante, k65, is bepaal deur middel van regressie, as 52.1 (±3.7) x10-3 s-1 by 25°C. Die aktiverings energie, Ea, is bereken as 90.1 (±1.2) kJ.mol-1 en die entalpie en entropie van aktivering is onderskeidelik 87.7 (±1.2) kJ.mol-1 en 24.7 (±4.3) J.K-1.mol-1. Daar is gevind dat die akwasie reaksie konstante afhanklik was van die soutsuur konsentrasie: dit neem af soos die soutsuur konsentrasie toeneem. Met behulp van die regressie lyn is die anasie tempo konstante bepaal by 25°C as 1.62 (±0.11) x10-3 M-1s-1. Die aktiveringsenergie is bepaal as 88.0 (±1.4) kJ.mol-1 en die entalpie en entropie van aktivering, onderskeidelik as 85.6 (±1.4) kJ.mol-1 en –11.2 (±4.7) J.K-1.mol-1. Die invloed van die soutsuur konsentrasie op die anasie tempo konstante is nie bepaal nie. Die ewewigskonstante vir die reaksie wat ondersoek is, is bereken met die tempo konstantes vir die akwasie en anasie reaksies. Die ewewigskonstante, K6, is bereken as 0.0311 M-1 by 25°C. Toe die ewewigskonstante vergelyk is met die literatuur waardes, is gevind dat die ewewigskonstante afhanklik is van die soutsuur konsentrasie. Saam met die waardes wat in die literatuur gevind is, is die ewewigskonstante gebruik om twee distribusie diagramme te bereken. Die distribusie diagramme vir die Ru(III) spesies toon onderskeidelik 79.9% en 72.3% [RuCl6]3- in 12M HCl. Die twee distribusie diagramme is baie eenders en dit is nie moontlik om ‘n finale distribusie diagram op te trek totdat die uitstaande tempo konstantes tussen die akwachloro Ru(III) spesies bepaal word nie. Die tempo konstantes en termodinamiese waardes wat bepaal is vir die Ru(III) reaksie is vergelyk met gelyksoortige waardes in die literatuur van Rh(III) en Ir(III) omdat daar ooreenkomste tussen die platinum groep metale opgemerk is. Daar is bevind dat die akwasie én anasie reaksies die volgende patroon volg: Ru(III) > Rh(III) > Ir(III). Die verskille word in sekere gevalle benut in die raffinering van hierdie metale. Kristalle van dietileentriamien heksachlororuthenaat(III) is berei en gekarakteriseer met behulp van CHN analise en x-straal kristallografie. Die gemiddelde Cl-Ru bindingsafstand vir die kristal was 2.371 Å. Die kristalstruktuur is vergelyk met dié van heksaäkwaäluminium hexachlororuthenaat(III) tetrahidraat en diëtileentriamien heksachlororhodaat(III). Die chloried-metaal bindingsafstand vir die kristalle was soortgelyk (2.350 Å – 2.375 Å). Die diëtileentriamien kristalstrukture stem goed ooreen. Die gevolgtrekking was dat die kristalle wat voorberei is wel diëtileentriamien heksachlororuthenaat(III) was.
Molina, Calderón Lorena Paola. "Transferencia de lantano (III), cerio (III), praseodimio (III) y neodimio (III) a través de membranas líquidas emulsificadas utilizando cyanex 272 como agente transportador." Tesis, Universidad de Chile, 2012. http://www.repositorio.uchile.cl/handle/2250/111235.
Full textEn esta Memoria de Titulo se estudió la transferencia del lantano (III), cerio (III), praseodimio (III) y neodimio (III), desde una fase acuosa de alimentación hacia una fase acuosa de retroextracción, por medio del transportador órgano fosforado CYANEX 272 contenido en una membrana liquida emulsificada. En primera instancia se estudió el comportamiento ácido base de cuatro extractantes (D2EHPA, PC-88A, CYANEX 272, CYANEX 301) permitiendo conocer sus pKa aparentes y su disponibilidad para reaccionar con los iones Tierras Raras (TR) a ciertos pH. A partir de este conocimiento y las reacciones de extracción propiamente tales fue posible proponer la utilización de una fase acuosa de alimentación tamponada con el ácido 3-cloropropiónico a pH 4. A través de los experimentos de extracción por solvente de cada uno de los iones TR con los cuatro extractantes en estudio, se determinó que el extractante más adecuado para el proceso fue el CYANEX 272, debido a su alta capacidad de extracción y mayor selectividad con los cuatro iones TR. Si bien en un principio todos los experimentos se realizaron con alimentaciones monometálicas, después fue preciso probar el grado de competencia que se generaría al realizar la extracción de los iones lantánidos desde una alimentación polimetálica. Los resultados fueron coincidentes con los experimentos de extracción individuales de los iones TR, en donde el lantano es el ión que menos se extrajo en comparación con los otro tres. Por otro lado, los experimentos de retroextracción revelaron que ion cerio presentaba el menor grado de transferencia hacia la fase acuosa interna. Todos estos conocimientos generados revelaron que la dupla Nd-Pr era difícil de separar con las condiciones ya establecidas. Por esta razón se agregó EDTA como agente quelante a una alimentación que contenía estos dos iones en iguales concentraciones (2mM), lográndose un coeficiente de selectividad máximo (SPr/Nd) de 1,7. Los experimentos de extracción por solvente (SX) generaron el conocimiento base para los experimentos de transporte de los cuatro iones lantánidos con CYANEX 272 a través de las Membranas Líquidas Emulsificadas (MLE). Previo al inicio de los experimentos de transferencia fue necesario lograr una doble emulsión de estabilidad adecuada en función de las concentraciones variables de sus componentes: transportador CYANEX 272, tensoactivo SPAN 80, Ln+3 (lantánidos) total y HCl en la fase acuosa de retroextracción. A partir del estudio de estabilidad, se observó que la concentración del tensoactivo SPAN 80 presentó el efecto más crítico, donde una cantidad insuficiente produjo pérdida de la fase acuosa interna, disminuyendo el rendimiento de extracción. Por otro lado, una cantidad excesiva de SPAN 80 provocó el hinchamiento de la emulsión primaria. Como consecuencia de esto la fase acuosa interna que contiene al ion de interés se diluye o pierde pureza. En términos generales, para conservar el volumen de 75 mL de emulsión primaria, formada por 25 mL de fase acuosa interna más 50 mL de fase orgánica, es necesario utilizar alrededor de 1,2% p/v de SPAN 80, cuando la concentración en la alimentación de cada uno de los ETR es 0,5 mM. Para concentraciones mayores se necesita aproximadamente entre 2-2,1% p/v de tensoactivo. Con los experimentos preliminares de transferencia de los iones TR en estudio, se pudo determinar que los elementos lantano, cerio, praseodimio y neodimio fueron extraídos eficientemente en el orden del 90% desde la alimentación, mientras que fueron transportados a través de la membrana hacia la fase acuosa interna en un rango entre 40-60%. Posteriormente, un estudio cinético de la extracción de cada uno de los ETR, permitió observar que durante los primeros 5 min los iones cerio, praseodimio y neodimio experimentaron un rápido decaimiento en su concentración en la fase acuosa externa, mientras que para el ion lantano se requirió al menos de 10 min. Finalmente, para lograr un enriquecimiento de cada uno de los iones metálicos mediante MLE desde una solución polimetálica, se realizaron dos diseños experimentales, uno de tipo screening y otro de optimización. Los resultados del primer diseño indicaron que el factor tiempo fue el único que presentó un efecto significativo sobre los porcentajes de extracción y transferencia de los ETR a través de la doble emulsión. En el segundo diseño los resultados indicaron que la presencia de EDTA en la fase acuosa externa tuvo un efecto negativo sobre el grado de transferencia de los iones TR hacia la fase orgánica.
In this work the transference of lanthanum (III), cerium (III), praseodymium (III) and neodymium (III) were studied, from a feed aqueous phase toward a backextraction aqueous phase by means of the organophosphorous CYANEX 272 carrier contained into an emulsified liquid membrane. In the first instance the acid-base behavior of the four extractants (D2EHPA, PC-88A, CYANEX 272 and CYANEX 301) were studied allowing to know their apparent pKa and through it the availability to react with the rare earth ions (RE) at certain pH. From this knowledge and the actual such extraction reactions it was possible to propose the use of a buffered feed aqueous phase with 3-cloropropionic acid at pH 4. Through the solvent extraction experiments for each one of the RE with the considered four extractants, it was determined that the most appropriated extractant for the process was CYANEX 272, owing to its high extraction capacity and better selectivity for the four RE ions. Although at first all experiments were performed with monometallic feeds, afterward it was necessary to test the degree of competition that would be generated to perform the extraction of lanthanide ions from a polymetallic feed solution. The results were consistent with the individual extraction experiments of the RE ions, wherein lanthanum is the lesser extracted ion compared with the other three ones. On the other hand, the backextraction experiments showed that the cerium ion had the lowest degree of transference toward the internal aqueous phase. All this generated knowledge revealed that the pair Nd-Pr was difficult to separate at the established conditions. For this reason, EDTA as a chelating agent was added to the feed solution that contained these two ions at identical concentrations (2 mM), achieving a maximum selectivity coefficient (SPr/Nd) of 1.7. The solvent extraction (SX) experiments generated the base knowledge for the transport experiments of the four lanthanide ions with CYANEX 272 through Emulsified Liquid Membranes (ELM). Before starting the transfer experiments it was necessary to achieve a satisfactory stability of the double emulsion as a function of the variation of the component concentrations: carrier CYANEX 272, surfactant SPAN 80, total Ln3+ (lanthanides) and HCl in the backextraction aqueous phase. From this stability study it was observed that the concentration of SPAN 80 surfactant showed the most significant effect, where an insufficient amount caused the loss of the internal aqueous phase, decreasing the efficiency of extraction. On the other side, an excessive amount of SPAN 80 caused a swelling degree of the primary emulsion. As a consequence the internal aqueous phase that contains the ion of interest is diluted or lost its purity. In general terms, for keeping the volume of 75 mL of the primary emulsion, consisting of 25 mL of internal aqueous solution plus 50 mL of the organic solution, it is necessary to use about 1.2% w/v of the SPAN 80, when the concentration of each the REE in the feeding is 0.5 mM. For higher concentrations of the total REE about 2 to 2.1% w/v of surfactant are needed, approximately. From the preliminary experiments related with the transfer study of the RE ions, it was determined that the lanthanum, cerium, praseodymium and neodymium elements are removed efficiently in the order of 90% from the feed solution, while they were transported across the membrane toward the internal aqueous phase in the range of 40-60%. Afterward, a kinetic study of the extraction of each one of the REE, allowed to note that during the first 5 min of the carrying out tests the cerium, praseodymium and neodymium ions experimented a fast decline in the concentration in the external aqueous phase, whereas for the ion lanthanum at least 10 min was required. Finally, to achieve an enrichment of each one of the metal ions from a polymetallic solution by means MLE, two experimental designs were conducted, a screening one and another one related with the optimization type. The results of the first design indicated that the time factor was the unique significant effect on the extraction and transfer rates of the REE through the double emulsion. In the second design the results indicated that the presence of EDTA in the external aqueous phase has a negative effect on the transfer degree of the RE ions towards the organic phase.
Fondecyt
Das, Sibasish. "Analysis and design of pilot-aided multicarrier systems over doubly selective channels with a local subcarrier processing constraint." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1199305333.
Full textNeves, Josélia Gomes. "Cultura escrita em contextos indígenas /." Araraquara : [s.n.], 2009. http://hdl.handle.net/11449/101579.
Full textBanca: Maria Ivonete Barbosa Tamboril
Banca: Robson Antonio Rodrigues
Banca: Edson do Carmo Inforsato
Banca: Adir Casaro Nascimento
Resumo: O principal objetivo deste estudo foi investigar e documentar o processo de aquisição e apropriação da cultura escrita na T. I. Igarapé Lourdes junto às etnias Arara-Karo e Gavião-Ikolen e sua relação com a oralidade (FERREIRO; TEBEROSKY, 1999; FREIRE, 1987, CHARTIER, 1990; CERTEAU, 1998; ONG, 1998). Foi possível sistematizar a história de alfabetização e escolarização dessas sociedades indígenas, bem como compreender o modo de apropriação do objeto escrito. Esta pesquisa foi desenvolvida a partir da concepção de estudo do tipo etnográfico (ANDRÉ, 1995), de 2004 a 2009, na T. I. Igarapé Lourdes, no município de Ji-Paraná, estado de Rondônia. Envolveu oito aldeias e oito escolas públicas de educação escolar indígena, sendo duas pertencentes ao povo Arara-Karo e seis ao povo Gavião-Ikolen. Os colaboradores e colaboradoras Gavião-Ikolen foram quatro lideranças, uma do sexo feminino e três do sexo masculino e doze professores indígenas - todos do sexo masculino. Da etnia Arara-Karo participaram duas lideranças - todas do sexo masculino e sete docentes, sendo três professoras e quatro professores. Os docentes são contratados pela Secretaria de Estado da Educação - SEDUC, a maioria habilitados pelo Projeto Açaí - curso de magistério indígena e atuam com exclusividade nos anos iniciais do ensino fundamental. A coleta de dados ocorreu por meio dos seguintes instrumentos: observação participante nas aldeias e nas escolas, entrevistas a docentes e lideranças indígenas, bem como análise documental - cadernos de planejamento e relatório docentes, cadernos e atividades avulsas de alunos e alunas. A análise desenvolvida possibilitou compreender que os povos indígenas da T. I. Igarapé Lourdes, os Arara- Karo e Gavião-Ikolen desenvolvem cotidianamente ações de leitura e escrita. Buscam ler textos como os de gêneros jornalísticos - jornais... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Il obiettivo principale in questo studio era quello di indagare e documentare il processo di acquisizione e la proprietà di alfabetizzazione in T. I. Bayou Lourdes vicino al etnica Karo Macaw Hawk e Ikolen e il suo rapporto con l'oralità (FERREIRO; TEBEROSKY, 1999; FREIRE, 1987, CHARTIER, 1990; CERTEAU, 1998; ONG, 1998). E 'stato possibile sistematizzare la storia di alfabetizzazione e di istruzione delle popolazioni indigene, così come capire le modalità di appropriazione della scrittura dell'oggetto. Questa ricerca è stata sviluppata dalla concezione dello studio etnografico (ANDRÉ, 1995), dal 2004 al 2009, in T. I. Igarapé Lourdes, la città di Ji- Paraná, stato Rondonia. Si trattava di otto villaggi e otto scuole pubbliche in materia di istruzione indigene, e due persone appartenenti alla macaw Karo e sei persone di Hawk-Ikolen. Gli sviluppatori e contributori Hawk-Ikolen erano quattro leader, una femmina e tre maschi e dodici insegnanti indigeni - tutti maschi. Etnica Macaw Karo ha preso due leader - tutti i maschi e sette insegnanti, tre insegnanti e quattro insegnanti. Gli insegnanti sono assunti dal Dipartimento di Stato della Pubblica Istruzione - SEDUC, la maggior parte autorizzata dalla Açaí Project - Corso di insegnamento aborigena e ad agire esclusivamente nei primi anni di scuola elementare. La raccolta dei dati è avvenuta attraverso i seguenti strumenti: osservazione partecipante nei villaggi e nelle scuole, colloqui con gli insegnanti e leader indigeni e analisi documentaria - termini di pianificazione e reporting degli insegnanti, libri e attività su misura a ragazzi e ragazze. L'analisi ci ha permesso di comprendere le popolazioni indigene del T. I. Igarapé Lourdes, i Karo e Macaw Hawk-Ikolen sviluppare le attività quotidiane di lettura e scrittura... (Riassunto completo, acesso elettronico clicca qui sotto)
Doutor
POSTIGO, PONS BRIGITTE. "Contribution a l'etude de la maladie de ito (ou incontinentia pigmenti achromians) : a propos d'une observation ; revue de la litterature." Toulouse 3, 1989. http://www.theses.fr/1989TOU31223.
Full textFarzaneh, Kayvan. "A Comprehensive Survey to Identify System Concepts & ICT Requirements of IRAN Intelligent Transportation System (IRAN ITS)." Thesis, Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-2621.
Full textThis thesis report describes the survey carried out in order to study the ITS practices in Sweden and Europe and indentifying their successes and failures as well as technical specifications. Furthermore, a requirement analysis work has been taken into account to identify the needs and requirements of ITS development in Iran from both business and technical aspects. This thesis aims to conclude and come up with a plan about the development strategy and system architecture of Iran ITS.
González, Flores María de la Paz. "ITIL (Information Technology Infrastructure Library) Descripción, Funcionamiento y Aplicaciones." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2015. http://hdl.handle.net/20.500.11799/99997.
Full textMorcel, Karine. "Génétique du syndrome de Mayer-Rokitansky-Küster-Hauser : étude d'un gène candidat, le gène ITIH5." Rennes 1, 2009. http://www.theses.fr/2009REN1B127.
Full textThe Mayer-Rokitansky-Küster-Hauser (MRKH) syndrome is featured by a congenital utero-vaginal aplasia associated with other malformations. Familial cases were described. A different deletion was found in 4 independent patients within the four chromosomal loci affedted in DiGeorge syndrome (DGS) (22q11, 10p14, 8p23 and 4q34-ter). In 10p14-15, one gene, ITIH5, was affected by the deletion. It is a member of the ITI gene family, playing a role in extracellular matrix dynamics. In the mouse, Itih5 expresssion is strong and increases during embryonic development in the female genital tract. Moreover, the genital tracts seem to synthesize a specific isoform of the Itih5 protein. In conclusion, the loci involved in DGS deletion syndrome might as well be involved in the MRKH syndrome which would then be part of a wider and heterogeneous deletion syndrome. Furthermore our results show that ITIH5 haploinsufficiency could account for the MRKH syndrome
Wang, Jingwen, and Sereshki Hami Khosravi. "How to implement ITIL successfully?" Thesis, Jönköping University, JIBS, Business Informatics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-12968.
Full textThe purpose of this thesis is to reveal how Information Technology Infrastructure Library (ITIL) should be implemented in an organization in an efficient and effective way to achieve the goal of reducing wastage, cutting costs and increasing customers’ satisfaction. There are many books dealing with the ITIL. But these publications do not prescribe how to adopt, adapt or implement the guidelines as part of a service management strategy; it would seem useful to explore implementation strategies which are employed by organizations when they are using ITIL “best practices”.
This paper seeks to take a study of “How to implement ITIL successfully in organizations”, which could be subdivided into questions of “What steps are necessary to implement ITIL” and “what factors are critical within implementation process”. Although previous researches have made some recommendations generally, this paper investigates the question on that base through comparing consultants’, organizations’ opinion and previous researches.
This study begins with an overview of ITSM, ITIL, and critical success factors and steps of ITIL implementation. Information about the critical success factors and steps of ITIL implementation were acquired through interviews, emails and questionnaires from responsible staff in some major representative consultancy and organizations.
The outcomes of our research are fourteen significant steps to implement ITIL and some success factors during implementation, which are vital to have a prosperous ITIL implementation. This research makes a guideline for organizations to understand and carry out the ITIL implementation efficiently.
Затовський, Ігор Вікторович. "Синтез та дослідження подвійних фосфатів титану (III) та ванадію (III)." Diss. of Candidate of Chemical Sciences, КУ ім. Тараса Шевченка, 2000.
Find full textCarver, Aaron Dalnamath. "Selective Oxidations by Iron(III) Porphyrins and Iron(III) Corroles." TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1395.
Full textSorin, Antoire. "Séparation actinides (III) lanthanides (III) par nanofiltration assistée par complexation /." [Gif-sur-Yvette] : [CEA Saclay, Direction des systèmes d'information], 2006. http://catalogue.bnf.fr/ark:/12148/cb402306421.
Full textLess, Adam David. "Cultural Biases in the Weschler Memory Scale iii (WMS-iii)." UNF Digital Commons, 2012. http://digitalcommons.unf.edu/etd/591.
Full textSorin, Antoine. "Séparation actinides(III)-lanthanides(III) par nanofiltration assistée par complexation." Lyon 1, 2006. http://www.theses.fr/2006LYO10001.
Full textDiaz, Canales Eva María. "Síntesis de Nuevos Materiales Microporosos Mediante Técnicas High-Throughput." Doctoral thesis, Universitat Politècnica de València, 2015. http://hdl.handle.net/10251/59230.
Full text[ES] Las zeolitas son materiales cristalinos microporosos que presentan canales y cavidades de dimensiones moleculares en su interior. La principal ventaja de estos materiales es su elevada estabilidad térmica y química, así como la posibilidad de poder variar la topología y dimensiones de los canales y cavidades. El principal objetivo de esta tesis doctoral es la obtención de nuevos materiales microporosos (zeolitas) y ampliar el rango de composición de alguno ya existente, empleando técnicas de síntesis y caracterización de alta capacidad. Para la obtención de estos materiales microporosos se sintetizan cuatro familias de agentes directores de estructura (ADEs), formadas por cationes tetraalquilamonio cuaternarios. En cada familia de ADEs se aumentan el tamaño y el volumen del agente para poder realizar un estudio sobre cómo afecta este aumento sobre el tipo de zeolita que cristaliza. Obtenidos y caracterizados los agentes directores de estructura, se lleva a cabo un diseño factorial de experimentos para cada uno de ellos teniendo en cuenta cada una de las variables que influyen sobre la síntesis hidrotermal de zeolitas e intentando cubrir el mayor rango posible de composición. Los materiales de interés obtenidos en estos experimentos se someten a una caracterización exhaustiva, para poder determinar su estructura y propiedades. Con los ADEs con los que se ha trabajado se ha obtenido materiales conocidos entre los que destacan las zeolitas ITQ-3, ITQ-43 e ITQ-44. Pero lo más importante de la realización de esta tesis ha sido la obtención de dos nuevos materiales, a los que se les ha denominado ITQ-57 e ITQ-60. La estructura de la zeolita ITQ-60 está completamente determinada y podemos concluir que es un material intercrecido, formado por dos capas y que presenta un sistema bidimensional de canales formados por anillos de 10 y 12 miembros. Por otro lado, la estructura de la zeolita ITQ-57 se encuentra en sus últimas etapas de determinación, pero ha podido determinarse que presenta una celda unidad ortorrómbica de grandes dimensiones. También es de destacar la obtención de un método optimizado de síntesis de la zeolita quiral SU-32. Esta zeolita se ha sintetizado en forma de mezcla racémica y empleando un ADE quiral. Mediante cálculos teóricos se ha podido comprobar que cada uno de los enantiómeros del ADE es capaz de dirigir hacia la formación de cada uno de los enantiómeros de la zeolita quiral. El último paso consiste en sintetizar por separado los enantiómeros del ADE, lo que nos permitirá obtener las dos zeolitas quirales.
[CAT] Les zeolites son materials cristal·lins microporosos que presenten canals i cavitats de dimensiones moleculars al seu interior. El gran avantatge de estos materials és la seua estabilitat térmica i química, així com la possibilitat de poder variar la topología i dimensiones dels canals i cavitats. El principal objectiu de esta tesi doctoral es l'obtenció de nous materials microporosos (zeolites) i ampliar el rang de composició d'algú ja existent, fent ús de tècniques de síntesi i caracterització d'alta capacitat. Per a l'obtenció d'estos materials microporosos se sintetitzen cuatre famílies d'agents directors d'estructura (ADEs), formades per cationes tetraalquilamoni cuaternaris. En cada familia d'ADEs s'augmenta la grandària i el volum de l'agent per a poder realizar un estudi sobre com afecta esta augment sobre el tipus de zeolita que cristal·litza. Obtinguts i caracteritzats els agents directors d'estructura, es du a terme un disseny factorial d'experiments per a cadascun d'ells tenint en compte cadascuna de les variables que influïxen sobre la síntesi hidrotermal de zeolites i intentant cobrir el major rang possible de composició. El materials d'interés obtinguts en estos experiments es sotmeten a una caracteritzación exhaustiva, per a poder determinar la seua estructura i propietats. Amb els ADEs amb els quals s'ha treballat s'han obtingut materials coneguts entre els quals destaquen les zeolites ITQ-3, ITQ-43 i ITQ-44. Però el més important de la realitzación d'esta tesi ha sigut l'obtenció de dos nous materials, al quals se'ls ha denominat ITQ-57 i ITQ-60. L'estructura de la zeolita ITQ-60 està completament determinada i podem concloure que és un material intercrescut, format per dos capes i que presenta un sistema bidimensional de canals format per anells de 10 i 12 membres. D'altra banda, l'estructura de la zeolita ITQ-57 es trova en les seues últimes etapes de determinació, però ha pogut determinar-se que presenta una cel·la unitat ortoròmbica de grans dimensions. També cal destacar l'obtenció d'un método optimitzat de síntesi de la zeolita quiral SU-32. Esta zeolita s'ha sintetitzat en forma de mescla racèmica i emprant un ADE quiral. Per mitjà de càlculs teòrics s'ha pogut comprobar que cadascun dels enantiómers de la zeolita quiral. L'últim pas consisteix a sintetitzar per separat els enantiómers de l'ADE, la qual cosa ens permtetrà obtindre les dos zeolites quirals.
Diaz Canales, EM. (2015). Síntesis de Nuevos Materiales Microporosos Mediante Técnicas High-Throughput [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/59230
TESIS
Castro, Marcos Pereira. "A política agrícola no estado contemporâneo : obrigações jurídicas atinentes ao desenvolvimento rural sustentável /." Franca : [s.n.], 2008. http://hdl.handle.net/11449/89864.
Full textBanca: Lucas Abreu Barroso
Banca: Jete Jane Fiorati
Resumo: A presente pesquisa procurou analisar as orientações constitucionais atinentes a uma política agrícola que favorecesse a concretização dos fins do Estado de Direito Contemporâneo. Para tanto, o estudo teve como objetivos centrais discutir qual o paradigma de desenvolvimento sustentável adotado pelo sistema jurídico brasileiro, avaliar se a forma de desenvolvimento apregoada no ordenamento é suficiente para satisfazer os interesses coletivos e averiguar qual a efetividade dos dispositivos normativos relativos à atividade agrícola sustentável. O trabalho também buscou observar a possibilidade de o Direito participar, de maneira prospectiva, da regulação e construção de uma atividade agrícola capaz de superar os problemas socioambientais decorrentes da modernização conservadora do campo, a qual acentuou os riscos relativos à perda ou diminuição do potencial produtivo dos recursos naturais localizados no meio rural. A fim de realizar um estudo mais completo sobre esse tema, também foram ponderados os valores norteadores da atividade agrícola, as normas que condicionam a realização dessa atividade e as perspectivas de atuação do Estado, tanto na função de controle, quanto na obrigação de agir na fomentação do desenvolvimento rural e na prevenção de danos ambientais. Como resultado deste trabalho, constatou-se a existência de fundamentos jurídicos para a defesa de um paradigma de desenvolvimento sustentável tridimensional, uma vez que a própria Constituição Federal consagra a integração e harmonização da proteção ambiental com o crescimento econômico e o bem-estar social. Verificou-se, ainda, a existência de instrumentos estatais aptos a exigir que o produtor, quando possível, exerça suas atividades em conformidade com as obrigações prescritas, bem como a previsão e regulamentação de políticas governamentais destinadas à sustentabilidade do empreendimento agrícola
Astratto: Questa ricerca ha cercato di analizzare gli orientamenti costituzionali che riguardano ad una politica agraria che favoriva la concretizzazione delle fine di l' Stato di Diritto Contemporaneo. Per tanto, l' studio ha che obiettivi centrali discutere ciò che il paradigma di sviluppo sostenibile adottato dal brasiliano sistema giuridico, valutare se la forma di sviluppo proclamata in l' ordine è sufficiente a soddisfare gli interessi collettivi e d' indagare ciò che l' efficacia dei dispositivi normativi relativi a l' attività agricola sostenibile. Il lavoro ha anche cercato osservare la possibilità il diritto di partecipare, in modo prospettivo, del regolamento e della costruzione d' un'attività agricola capace di superare i problemi socioambientais legati all'ammodernamento conservarici del campo, che ha accentuato i rischi relativi alla perdita o la diminuzione del potenziale produttivo delle risorse naturali situate nel mezzo agricolo. Per realizzare uno studio più completo su quest'argomento, così sono stati riflessi i valori norteadores di l' attività agricola, le norme che condizionano la realizzazione di quest'attività e le prospettive di prestazione di l' Stato, in tale modo nella funzione di controllo, quanto in l' obbligo d' agire nella fomentação dello sviluppo agricolo e nella prevenzione di danni ambientali. Come risultato del lavoro, s' è constatata l' esistenza di basi giuridiche per la difesa d' un paradigma di sviluppo sostenibile tridimensionnel, visto che la Costituzione Federale stessa dedica l' integrazione e l' armonizzazione della protezione ambientale con la crescita economica ed il benessere sociale. Egli s' è verificato, ancora, l' esistenza d' strumenti d' stato atti ad esigere che il produttore, quando possibile, esercita le loro attività conformemente agli obblighi prescritti, come pure la previsione e la regolamentazione di politiche governative destinate allo sviluppo
Mestre
Keceli, Ezgi. "Ruthenium(iii) Acetylacetonate." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/3/12607230/index.pdf.
Full textEa = 25.6 &
#61617
&
#61472
1.3 kJ.mol-1, the enthalpy of activation
&
#8710
H# = 24.6 ±
1.2 kJ.mol-1 and the entropy of activation &
#8710
S# = -170 ±
5 J&
#61655
mol-1&
#61655
K-1. Ruthenium(III) acetylacetonate provides the lowest activation energy ever found for the hydrolysis of sodium borohydride. Ruthenium(III) acetylacetonate was found to be highly active catalyst providing 1183 total turnovers in the hydrolysis of sodium borohydride over 180 min before they are deactivated. The recorded turnover frequency (TOF) is 6.55 min-1.
YASUDA, Takami, Shigeki YOKOI, 孝美 安田, and 茂樹 横井. "コンピュータグラフィックス(III・完)." 社団法人電子情報通信学会, 1993. http://hdl.handle.net/2237/14953.
Full textOakley, Thomas J. "S.cerevisiae Topoisomerase III." Thesis, University of Oxford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.393998.
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