Thèses sur le sujet « NIRF »
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Preuß, Arne [Verfasser], et Gunhild [Akademischer Betreuer] Layer. « Biochemische Untersuchungen zu NirN und NirF aus Pseudomonas aeruginosa ». Freiburg : Universität, 2021. http://d-nb.info/1236501594/34.
Texte intégralDobroschke, Raoul Roman Götz [Verfasser]. « Untersuchung von NIRF Fluorkontrastmittel zur Detektion von Myokardinfarkten im Tiermodell / Raoul Roman Götz Dobroschke ». Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2018. http://d-nb.info/1176632043/34.
Texte intégralDobroschke, Raoul [Verfasser]. « Untersuchung von NIRF Fluorkontrastmittel zur Detektion von Myokardinfarkten im Tiermodell / Raoul Roman Götz Dobroschke ». Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2018. http://d-nb.info/1176632043/34.
Texte intégralFrancisco, Maira José António. « O Impacto da adoção do Plano Geral de Contabilidade : normas internacionais de relato financeiro em Moçambique ». Master's thesis, Instituto Superior de Economia e Gestão, 2016. http://hdl.handle.net/10400.5/12886.
Texte intégralEste estudo pretende analisar o impacto da adoção do Plano Geral de Contabilidade - Normas Internacionais de Relato Financeiro (PGC-NIRF), pelas empresas em Moçambique em 2009, nas Demonstrações Financeiras e nos principais Indicadores Económicos Financeiros. Os resultados obtidos sugerem que a alteração do normativo levou, em média, a um aumento do Capital Próprio e a uma diminuição do Resultado Líquido. As rubricas que sofreram os ajustamentos mais significativos e que contribuíram para os impactos registados foram: Ativo Intangível, Ativo Financeiros Disponíveis para Venda, Ativo por Imposto Diferido, Caixa e Equivalentes, Empréstimos, Outros Credores e Outros Passivos Correntes. Em termos de Indicadores, os mais afectados foram: Debt-to-Equity, Liquidez Geral, Liquidez Reduzida, Rendibilidade Liquida das Vendas e Rendibilidade dos Capitais Próprios.
This study aims to analyze the impact of the adoption of the General Chart of Accounts - International Financial Reporting Standards (PGC-NIRF), by companies in Mozambique in 2009, on Financial Statements and Financial Ratios. The results suggest that the adoption of the new standards increased, on average, the value of equity and decreased the value of net profit. The items that suffered the most significant adjustments and contributed to the these impacts were: Intangible Assets, Available-for-Sale Financial Assets, Deferred Tax Assets, Cash and Cash Equivalents, Loans, Other Creditors and Other Current Liabilities. The ratios most affected were: General Liquidity, Reduced Liquidity, Net Profit of Sales and Return on Equity.
N/A
Kunick, Valentin Helmut Verfasser], et Gerhard [Akademischer Betreuer] [Adam. « Vergleichende Analyse von Nanobodies und monoklonalen Antikörpern gegen humanes CD38 für die NIRF-Bildgebung von Lymphomen in vivo / Valentin Helmut Kunick ; Betreuer : Gerhard Adam ». Hamburg : Staats- und Universitätsbibliothek Hamburg, 2020. http://nbn-resolving.de/urn:nbn:de:gbv:18-105726.
Texte intégralKunick, Valentin Helmut [Verfasser], et Gerhard [Akademischer Betreuer] Adam. « Vergleichende Analyse von Nanobodies und monoklonalen Antikörpern gegen humanes CD38 für die NIRF-Bildgebung von Lymphomen in vivo / Valentin Helmut Kunick ; Betreuer : Gerhard Adam ». Hamburg : Staats- und Universitätsbibliothek Hamburg, 2020. http://d-nb.info/1214811957/34.
Texte intégralGennaro, Giuseppa. « Caractérisation de nifF une flavodoxine nif-spécifique chez la bactérie photosynthetique Rhodobacter capsulatus ». Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0018/NQ53281.pdf.
Texte intégralVucko, Timothé. « C-glycosides fluorés pour le marquage de peptides : Applications en imageries TEP et bimodale TEP/FPIR ». Electronic Thesis or Diss., Université de Lorraine, 2019. http://www.theses.fr/2019LORR0186.
Texte intégralThe work developed in this thesis is based on saccharidic derivatives especially C-glycosides for which new synthetic methodologies and applications in the field of PET and PET/NIRF imaging have been developed. Some peptides play a major role in therapy and diagnosis of various pathologies and their conjugation with a saccharidic derivative significantly improves their biodistribution. The first part of this work concerns the synthesis of fluorinated (19F) and radiofluorinated (18F) C-glycosides fonctionalized in anomeric position by an arm bearing an azide function. These compounds were coupled by 1,3-dipolar cycloaddition to peptides derived from RGD, allowing the labeling of these peptides by an indirect method namely prosthetic strategy. The radiosynthesis of one radiotracer was fully automated. The in vitro biological evaluation on two types of integrins and in vivo by PET imaging showed the interest of these radiotracers in the field of oncology. The second part is closely linked to these first results. To go further in terms of diagnostic tools, dual (radio)fluorinated probes for bimodal PET/NIRF imaging were developed. This required an elaborated synthetic strategy to introduce a fluorine atom and a cyanine dye, both being PET and NIRF specific imaging probes. The coupling of a biomolecule (RGD peptide) was also performed by "Click" reaction. Regiocontrolled functionalization methods enabled the introduction of these various moieties. The perspective is to evaluate the in vitro biological properties of the synthetized tools and to consider this dual probe for diagnostic and theranostic applications in PET/NIRF imaging
Ariztia, Julen. « Dérivés C-glycosidiques pour l’imagerie bimodale TEP/FPIR. Applications au marquage de dérivés peptidiques RGD ». Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0097.
Texte intégralThe work developed in this thesis deals with C-glycosyl compounds for which new synthetic methodologies and applications in PET/NIRF imaging have been developed. Some peptides have a major role in the therapy and diagnostic of diverse pathologies and their conjugation with a fluorophore and a radioelement allow precise diagnostic and potential theranostic applications by surgery. The goal was to develop the synthesis of (radio)fluorinated and fluorescent dual probes for bimodal PET/NIRF imaging. An elaborated synthetic strategy was required to introduce a fluorine atom and a cyanine-type fluorophore, both being the specific probes of PET and NIRF imaging. Two main strategies were developed for the synthesis of these tools: the functionalization of C-glycosyl derivative including a [3.3.0]furofuranone scaffold and the functionalization of polyhydroxylated C-glycosyl compound. The protection/deprotection synthetic strategies have made possible the setting up of these various elements followed by the conjugation of two peptidic RGD derivatives by CuAAC “Click” reaction. The affinity of the two fluorinated and fluorescent derivatives for the integrins was in the same range (40 nM) than the RGD peptide alone, highlighting the benefit of the divalence of the agent. The radiofluorination of a dual PET/NIRF probe have been successfully achieved, allowing application for in vivo PET and NIRF imaging as well as NIRF-guided surgery
Wruck, Eric Michael. « Applying near-infrared spectroscopy (nirs) ». Texas A&M University, 2005. http://hdl.handle.net/1969.1/2386.
Texte intégralYang, Xiaowei 1974. « NIRA : a new Internet routing architecture ». Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/28740.
Texte intégralIncludes bibliographical references (p. 173-181).
(cont.) mechanism, a user only needs to know a small region of the Internet in order to select a route to reach a destination. In addition, a novel route representation and packet forwarding scheme is designed such that a source and a destination address can uniquely represent a sequence of providers a packet traverses. Network measurement, simulation, and analytic modeling are used in combination to evaluate the design of NIRA. The evaluation suggests that NIRA is scalable.
The present Internet routing system faces two challenging problems. First, unlike in the telephone system, Internet users cannot choose their wide-area Internet service providers (ISPs) separately from their local access providers. With the introduction of new technologies such as broadband residential service and fiber-to-the-home, the local ISP market is often a monopoly or a duopoly. The lack of user choice is likely to reduce competition among wide-area ISPs, limiting the incentives for wide-area ISPs to improve quality of service, reduce price, and offer new services. Second, the present routing system fails to scale effectively in the presence of real-world requirements such as multi-homing for robust and redundant Internet access. A multi-homed site increases the amount of routing state maintained globally by the Internet routing system. As the demand for multi-homing continues to rise, the amount of routing state continues to grow. This dissertation presents the design of a new Internet routing architecture (NIRA) that simultaneously addresses these two problems. NIRA gives a user the ability to choose the sequence of Internet service providers his packets traverse. It also has better scaling characteristics than today's routing system. The design of NIRA is decomposed into four modular components: route discovery, route availability discovery, route representation and packet forwarding, and provider compensation. This dissertation describes mechanisms to realize each of these components. It also makes clear those places in the design where a globally agreed mechanism is needed, and those places where alternative mechanisms can be designed and deployed locally. In particular, this dissertation describes a scalable route discovery mechanism. With this
by Xiaowei Yang.
Ph.D.
Davis, James Martin IV. « Biochar and pH as Drivers of Greenhouse Gas Production in Denitrification Systems ». Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/78273.
Texte intégralMaster of Science
Brigle, Kevin Eugene. « Studies on the structure and function of various nif and nif- associated gene products encoded within the Azotobacter vinelandii nif gene cluster ». Diss., Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/54498.
Texte intégralPh. D.
Yoon, Weng Li. « Transferability of near infra-red spectra for the identification of pharmaceuticals ». Thesis, University College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311894.
Texte intégralVan, Sinay Olivier W. J. « Etude de la composition de surface d'alliages NiRh ». Doctoral thesis, Universite Libre de Bruxelles, 1998. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/212031.
Texte intégralMáslo, Lukáš. « NIRA JAKO KONCEPČNÍ OMYL. PŘÍČINY SELHÁNÍ KORPORATIVISTICKÉHO PROJEKTU ». Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-74291.
Texte intégralCowley, Richard D. « The clinical applications of near infrared spectroscopy (NIRS) ». Thesis, University of Manchester, 2003. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488355.
Texte intégralZENG, HAOMING. « FPGA based smart NIR camera ». Thesis, Mittuniversitetet, Institutionen för informationsteknologi och medier, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-17613.
Texte intégralSaleem, Aamer. « NIR spectroscopy for personal screening ». Thesis, University of Warwick, 2011. http://wrap.warwick.ac.uk/49178/.
Texte intégralGoregues, Christelle. « Analyses physiologiques, biochimiques et génétiques pour appréhender la diveristé fonctionnelle des bactéries dénitrifiantes en milieu marin côtier ». Aix-Marseille 2, 2004. http://www.theses.fr/2004AIX22106.
Texte intégralDenitrification is a respiratory process mediated by heterotrophic facultative anaerobes called denitrifiers. In anaerobiosis, nitrogen oxides (nitrate or nitrite) are used as alternative electron acceptors and are reduced in gaseous compounds (nitric oxide, nitrous oxide and dinitrogen). In marin sediments, denitrification is a key process of nitrogen cycle since it limits the quantity of nitrogen available for primary production by diffusion in the atmosphere. However, in coastal zones receiving high levels of anthropogenic nitrogen, denitrification allows the elimination of nitrogen overload and consequently reduces ecosystem eutrophication. [. . . ] The first part of this work presented an original DGGE method (Denaturing Gradient Gel Electrophoresis) developped to assess the functional biodiversity of denitrifying bacteria through the sudy of nitrite reductase encoding genes. We compared the structural and the functional diversity of 89 denitrifers isolated from sediments and we associated this diversity of 89 denitrifiers isolated from sediments and we associated this diversity with the biochemical and physiological characteristics of these isolates. Results showed that it didn' exist any relation between nirS and 16s rRNA phylogenetic trees. Moreover, some taxonomically closed strains presented different physiology and different nitrogen metabolism [. . . ]
Rude, Mark Edward. « Estimating spotted knapweed intake of sheep using NIRS technology ». Thesis, Montana State University, 2010. http://etd.lib.montana.edu/etd/2010/rude/RudeM0810.pdf.
Texte intégralLam, Wong Augusto. « La aplicación del nuevo Plan Contable General Empresarial ». Pontificia Universidad Católica del Perú, 2012. http://repositorio.pucp.edu.pe/index/handle/123456789/114768.
Texte intégralLa contabilidad como suministrador de información imprescindible para la toma de decisiones de los diversos agentes económicos y, específicamente, los registros contables se sustenta en un lenguaje organizado conocido como plan de cuentas. En el Perú hasta el año 1973, cada empresa elaboraba su plan de cuentas de acuerdo a sus necesidades de información lo que originaba la existencia de una diversidad de términos, algunos con abundancia de cuentas analíticas y otras solo genéricas. Ante esa situación se aprueba el primer Plan Contable General cuya aplicación obligatoria rige a partir del 1° de enero de 1974 hasta el año 1984, el cual fue reemplazado por el Plan Contable General Revisado (PCGR), y que es empleado hasta la fecha. Sin embargo, actualmente su uso no guarda relación con las Normas Internacionales de Información Financiera (NIIF), bajo las cuales se elaboran los estados financieros en nuestro país. Es por ello que se aprueba la versión del Plan Contable General Empresarial (PCGE), cuyo uso regirá obligatoriamente a partir del 1 de enero de 2011. El presente artículo tiene como finalidad dar a conocer los efectos de la aplicación, por parte de las organizaciones del sector privado, de este nuevo Plan Contable General Empresarial (PCGE), en base a la comparación con el Plan Contable General Revisado.
Marques, Aline de Sousa. « Uso da espectroscopia do infravermelho pr?ximo e t?cnicas multivariadas para diferenciar escherichia coli e salmonella enteritidis inoculadas em polpa de fruta (abacaxi) ». Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17734.
Texte intégralAiming to consumer s safety the presence of pathogenic contaminants in foods must be monitored because they are responsible for foodborne outbreaks that depending on the level of contamination can ultimately cause the death of those who consume them. In industry is necessary that this identification be fast and profitable. This study shows the utility and application of near-infrared (NIR) transflectance spectroscopy as an alternative method for the identification and classification of Escherichia coli and Salmonella Enteritidis in commercial fruit pulp (pineapple). Principal Component Analysis (PCA), Independent Modeling of Class Analogy (SIMCA) and Discriminant Analysis Partial Least Squares (PLS-DA) were used in the analysis. It was not possible to obtain total separation between samples using PCA and SIMCA. The PLS-DA showed good performance in prediction capacity reaching 87.5% for E. coli and 88.3% for S. Enteritides, respectively. The best models were obtained for the PLS-DA with second derivative spectra treated with a sensitivity and specificity of 0.87 and 0.83, respectively. These results suggest that the NIR spectroscopy and PLS-DA can be used to discriminate and detect bacteria in the fruit pulp
Visando ? seguran?a do consumidor, ? de extrema import?ncia identificar a presen?a de contaminantes patog?nicos nos alimentos, pois os mesmos s?o respons?veis por surtos alimentares que dependendo do n?vel de contamina??o pode chegar a causar a morte de quem os consome. Na industria h? uma necessidade de que essa identifica??o de contaminantes seja r?pida e rent?vel. Este estudo mostra a aplica??o e utilidade de medidas espectrais de transflect?ncia no infravermelho pr?ximo (NIR) como um m?todo alternativo para a identifica??o e classifica??o de Escherichia coli e Salmonella Enteritidis em polpa de fruta comercial (abacaxi). An?lise de Componentes Principais (PCA), Modelagem Independente por Analogia Classe (SIMCA) e An?lise Discriminante por M?nimos Quadrados Parciais (PLS-DA) foram utilizados na an?lise. N?o foi poss?vel obter uma separa??o total entre as amostras usando PCA e SIMCA. O PLS-DA apresentou bom desempenho na capacidade de predi??o alcan?ando 87,5% para E. coli e 88,3% para S. Enteritides, respectivamente. Os melhores modelos obtidos para o PLS-DA com os espectros tratados com segunda derivada apresentaram sensibilidade e especificidade de 0,87 e 0,83, repectivamente. Estes resultados sugerem que a espectroscopia NIR e PLS-DA podem ser usados para discriminar e detectar bact?rias na polpa da fruta
Piña, Garau Catalina. « Convergencia de los US GAAP con las NIIF del IASB ». Doctoral thesis, Universitat de les Illes Balears, 2016. http://hdl.handle.net/10803/458882.
Texte intégralBisaillon-Sicotte, Étienne. « Acquisition et traitement des signaux cérébraux en MEG-NIRS simultanés ». Mémoire, École de technologie supérieure, 2013. http://espace.etsmtl.ca/1170/1/BISAILLON%2DSICOTTE_Etienne.pdf.
Texte intégralHall, Michael A. « Temporal Mapping and Connectivity using NIRS for Language Related Tasks ». FIU Digital Commons, 2012. http://digitalcommons.fiu.edu/etd/560.
Texte intégralMagill, Daniel J. « Assessing West Virginia NIPF owner characteristics and preferred assistance topics ». Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1571.
Texte intégralTitle from document title page. Document formatted into pages; contains vii, 75 p. : ill., map. Includes abstract. Includes bibliographical references (p. 73-75).
Isbasar, Gullu Ceyda. « Distyryl-boradiazaindacenes As Red And Nir Switches ». Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/3/12608419/index.pdf.
Texte intégralRicks, David Leon. « Predicting NIF carryover at Public Works Centers ». Thesis, Monterey, California. Naval Postgraduate School, 1988. http://hdl.handle.net/10945/23093.
Texte intégralMešková, Michala. « Aplikace FTIR a NIR pro analýzu půd ». Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2020. http://www.nusl.cz/ntk/nusl-433163.
Texte intégralKeating, Marvin Scott. « Prediction of diet quality parameters of Rocky Mountain Elk via near infrared reflectance spectroscopy (NIRS) fecal profiling ». Texas A&M University, 2003. http://hdl.handle.net/1969.1/3949.
Texte intégralFirbank, Michael. « The design, calibration and usage of a solid scattering and absorbing phantom for near infra red spectroscopy ». Thesis, University College London (University of London), 1994. http://discovery.ucl.ac.uk/1382004/.
Texte intégralCieza, Sempertegui Sandra Janeth, et Cardoza Silvia Katherine Cornejo. « Adopción de la NIIF 1, aplicando la NIIF 9, NIC 2, 8 y 16 para la toma de decisiones en el Molino Sipán, periodo 2016-2017 ». Bachelor's thesis, Universidad Católica Santo Toribio de Mogrovejo, 2019. http://hdl.handle.net/20.500.12423/2281.
Texte intégralRodríguez, Díaz Daniela del Pilar. « Antes NIC 39 ahora NIIF 9 : nuevos desafíos para los contadores ». Pontificia Universidad Católica del Perú, 2017. http://repositorio.pucp.edu.pe/index/handle/123456789/114754.
Texte intégralEn este trabajo, se busca sintetizar las principales diferencias en la aplicación de laNIIF 9 «Instrumentos Financieros» a implementarse de forma obligatoria en el Perú desde el inicio del ejercicio 2018 con respecto a la actual NIC 39 «Instrumentos Financieros: Reconocimiento y Medición», específicamente en clasificación y medición de las partidas de activos financieros. Además, se realiza un análisis práctico aplicado a instrumentos financieros del rubro de la banca de inversión.
Neste artigo, retomaremos as principais diferenças entre a aplicação da Normas Internacionais de Relatório Financeiro (IFRS) 9 «Instrumentos Financeiros» a implementar de forma imperativa no Peru desde o início do exercício de 2018 no que se refere ao atual Normas internacionais de contabilidade (IAS) 39 «Instrumentos Financeiros: Reconhecimento e Medição», focado em A classificação e mensuração de ativos financeiros. Além disso, uma análise prática será aplicada aos instrumentos financeiros no setor de banca de investimento.
Lima, Kassio Michell Gomes de. « Sensores opticos e instrumentação para determinação de contaminantes em aguas ». [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250562.
Texte intégralTese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica
Made available in DSpace on 2018-08-13T12:57:52Z (GMT). No. of bitstreams: 1 Lima_KassioMichellGomesde_D.pdf: 3376040 bytes, checksum: c43fc17e739fb3c24ee4fa1b849c70ef (MD5) Previous issue date: 2009
Resumo: Este trabalho descreve o desenvolvimento de sensores ópticos para determinação de benzeno, tolueno, etilbenzeno e xilenos (BTEX) e de íons metálicos em águas. Para a determinação de BTEX, monolitos de polidimetilsiloxano (PDMS) foram colocados dentro de um frasco preenchido com soluções aquosas dos compostos BTEX por um determinado tempo. Em seguida, a fase sensora era removida da solução, seca rapidamente e inserida num sistema de medidas, empregando-se um espectrofotômetro FT-NIR. Limites de detecção de 0,079; 0,12; 0,14 e 0,28 mg L para benzeno, tolueno, etilbenzeno e xilenos foram alcançados. A fase sensora foi aplicada a amostras de águas contaminadas por gasolina, quantificando teores de BT (benzeno e tolueno) sem diferença estatística, no nível de 95% de confiança, comparada a técnica GC-FID. A fase sensora também foi usada na determinação simultânea de BTX. Valores de RMSEP (raiz quadrada do erro médio quadrático de previsão) de 0,57 mg L para benzeno, 2,21 mg L para tolueno e 1,23 mg L para xilenos foram alcançados. Um fotômetro no infravermelho próximo baseado em LED (diodos emissores de luz) para a determinação de BTEX total foi desenvolvido. O instrumento desenvolvido opera com dois LED, um fotodiodo, um sistema de fibras ópticas para captação da radiação, célula de transmissão e um programa em Visualbasic.Net para controle e aquisição de dados. O instrumento pode ser uma alternativa viável, de baixo custo para a determinação de BTEX total em águas. Foi avaliado o comportamento do novo reagente luminescente di(hexafluorofosfato) de bis(1,10-fenantrolina)(2-(1H-imidazo[4,5- f][1,10]fenantrolina)Rutenio (II), abreviadamente [Ru(phen)2iip](PF6)2, no desenvolvimento de um sensor óptico para a determinação de íons metálicos em águas. A imobilização do reagente em matrizes poliméricas revelou que o sensor óptico e seletivo ao íon Cu(II), apresentando limite de detecção 32 mg L. O novo complexo de rutênio (II) foi aplicado numa determinação simultânea dos íons metálicos Cu(II) e Hg(II) em solução aquosa, alcançando valores de RMSEP de 2,12 mg L e 0,95 mg L, respectivamente
Abstract: This work describes the development of optical sensors for determination of benzene, toluene, ethylbenzene and xylenes (BTEX) and metal ions in water. For the determination of BTEX, monoliths of polydimethylsiloxane (PDMS) were inserted into a bottle filled with aqueous solutions of BTEX compounds for a pre-defined period of time. Afterwards the sensing phase was removed from the solution, dried and placed in the detection system of an FT-NIR spectrophotometer. Detection limits of 0.079, 0.12, 0.14 and 0.28 mg L for benzene, toluene, ethylbenzene and xylenes, respectively, have been achieved. The sensing phase was applied to the determination of benzene and toluene in water samples contaminated by gasoline, providing results that did not show statistical differences from those obtained by GC-FID at a confidence level of 95%. The sensing phase was also applied to the simultaneous determination of BTX in contaminated water, providing RMSEP values (root mean square error of prediction) of 0.57 mg L for benzene, 2.21 mg L for toluene and 1.23 mg L for xylenes. A near infrared photometer based on LED (light emitting diodes) for the determination of total BTEX was developed. The instrument operates with two LED as light sources and a photodiode as detector, a transmission cell connected to an optical fiber bundles; a VisualBasic.Net program was written for control and data acquisition. The instrument performance indicated that it can be a feasible and low cost alternative for the determination of total BTEX in water. Finally, it was evaluated the performance of the new luminescent reagent bis(1,10-phenanthroline)(2-(1H-imidazol-2- yl)-1H-imidazo[4,5-f][1,10]phenanthroline)ruthenium(II) di(hexafluorophosphate) for the development of an optical sensor for the determination of metal ions in water. The immobilization the reagent in the polymeric matrices showed that the optical sensor is selective to Cu (II) ion, providing a detection limit of 32 mg L. The new complex of ruthenium (II) was also applied to the simultaneous determination of Cu (II) and Hg (II) in aqueous solution, showing RMSEP values 2.12 mg L and 0.95 mg L, respectively
Doutorado
Quimica Analitica
Doutor em Ciências
Frost, Volker Jörg. « Kalibrationsoptimierung mittels genetischer Algorithmen eine Methode zur automatischen Selektion von PCR-Faktoren in der NIR-Spektrometrie / ». [S.l. : s.n.], 2000. http://www.ub.uni-duisburg.de/diss/diss0029/.
Texte intégralBrandenbusch, Karsten. « Nahinfrarot-spektroskopische Analytik und Kalibrationstransfer ausgewählter chemischer Rohstoffe und Produktionsverfahren ». [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=962729949.
Texte intégralO'Neil, Andrew James. « Multivariate statistical quality control of a pharmaceutical manufacturing process using near infrared spectroscopy and imaging microscopy ». Thesis, University College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341802.
Texte intégralMontes, Juan Manuel. « Application of near-infrared spectroscopy in plant breeding programs ». [S.l. : s.n.], 2006. http://nbn-resolving.de/urn:nbn:de:bsz:100-opus-1735.
Texte intégralYousefi, Gharebaghi Farzad. « Near Infrared (NIR) Spectroscopic Assessment of Engineered Cartilage ». Diss., Temple University Libraries, 2017. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/477078.
Texte intégralPh.D.
Articular cartilage has limited intrinsic healing capacity due to its dense and avascular structure. Clinical approaches have been developed to address the limitations associated with the poor ability of articular cartilage to regenerate. Current clinically approved techniques, however, can result in repair tissue that lacks appropriate hyaline cartilage biochemical and biomechanical properties, which lead to uncertain long-term clinical outcomes. Using tissue engineering strategies and a range of scaffolding materials, cell types, growth factors, culture conditions, and culture times, engineered tissues have been produced with compositional and biomechanical properties that approximate that of native tissue. In these studies, a considerable number of samples are typically sacrificed to evaluate compositional and mechanical properties, such as the amount of deposited collagen and sulfated glycosaminoglycan (sGAG) in the constructs. The number of sacrificed samples, as well as the amount of time and resources spent to evaluate the sacrificed samples using current gold standards, motivates an alternative method for evaluation of compositional properties. Vibrational spectroscopy, including infrared, has been considered as an alternative technique for assessment of tissues over the last 15-20 years. Infrared spectroscopy is based on absorbance of infrared light by tissue functional groups at specific vibrational frequencies, and thus, no external contrast is required. Vibrational spectroscopy is typically performed in two frequency regions, the mid infrared region (750-4000 cm-1), where penetration depth is limited to approximately 10 microns, and the near infrared (NIR) region (4000-12000 cm-1). In the NIR region, penetration of light is on the order of millimeters or centimeters, which makes it ideal for obtaining data through the full depth of engineered constructs. Here we employ NIR spectroscopy to nondestructively monitor the development of tissue-engineered constructs over culture period.
Temple University--Theses
Bradburne, James Andrew. « Regulation of nif gene expression in bradyrhizobium japonicum ». Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/25742.
Texte intégralAl-Mbaideen, Amneh Ahmed. « Digital signal processing techniques fpr NIR spectroscopy analysis ». Thesis, University of Sheffield, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.538095.
Texte intégralLüpertz, Matthias [Verfasser]. « Entwicklung einer fouling-kompensierenden NIR-Sonde / Matthias Lüpertz ». Wuppertal : Universitätsbibliothek Wuppertal, 2015. http://d-nb.info/1076916724/34.
Texte intégralHedlund, Philip. « Detection of glass in RDF using NIR spectroscopy ». Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-40290.
Texte intégralFUDIPO
Kulkarni, Sunil. « Mechanically Robust Ordered Nanocomposites Exhibiting a NIR Bandgap ». Diss., Temple University Libraries, 2009. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/22207.
Texte intégralPh.D.
This dissertation reports a simple route to synthesis nanostructured composites by immobilizing colloidal crystals (CCs) of monodisperse SiO2 spheres in crosslinked polymer network. The resulting ordered nanocomposites exhibited the highest modulus reported yet, to the best of our knowledge, for similar materials. The ordered nanocomposites were optically active and the Bragg diffracted light in a NIR region and wavelength of the Bragg peak could be tuned simply by changing the silica concentration in the composite. They also exhibited intense angle dependent iridescence.
Temple University--Theses
Cissé, Ibrahima. « Caractérisation des propriétés biochimiques et nutritionnelles de la pulpe de baobab des espèces endémiques de Madagascar et d'Afrique continentale en vue de leur valorisation ». Thesis, Montpellier, SupAgro, 2012. http://www.theses.fr/2012NSAM0009.
Texte intégralBaobab tree is growing wild in Africa and elsewhere in the world. Fruits are consuming in different ways. Plant ecology and botanic are well detailed, but generally few information is available on biochemical composition and even nothing about Malachi species. This study takes place in the development and valorization of African local fruits program. The main objective is to characterize baobab fruit pulp samples coming from both Madagascar and Africa. First, the main nutriments were characterized and quantified, such as, carbohydrates, amino acids, lipids, polyphenols, vitamin C, organic acids, minerals and aroma compounds. Biochemical characterization of the pulp showed high level of total acidity (102 meq/100g), ascorbic acid (till 312 mg/100g), polyphenols (from 60.24 to 137.81mg/100g) and anti oxidant potential.To valorize the fruit at larger scale, evaluation of its potential was realized trough improvements of existing processing techniques in Africa. A conventional approach (pasteurization) was realized to stabilize and store nectar. Data show nectar is as nutritive than fresh fruit with pasteurization schedule at 70°C/10min. Sensory analysis of nectar after each step of process doesn't show organoleptic difference relative to storage temperature. Two classical empirical approaches (Arrhenius and Ball models) were used to describe kinetic of thermal degradation of C vitamin of nectar.At least, Near Infra Red Spectroscopy (NIRS) was tested, to determine geographical origins and levels of biochemical compounds. Dry matter, proteins, fructose and potassium were quantified. Species segregation with NIRS seems possible by means of belonging to brevetubae and longitubae sections
Panontin, Flavia. « Determinação de volume de poro de silicas para CLAE utilizando espectroscopia no infravermelho proximo ». [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250552.
Texte intégralDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Quimica
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Resumo: Um método para a determinação do volume de poros de sílicas, utilizadas como suportes de fases estacionárias para CLAE (Cromatografia Líquida de Alta Eficiência), foi desenvolvido utilizando a espectroscopia na região do infravermelho próximo (NIR). Foram preparadas amostras pela adição de sílica em soluções de diferentes concentrações de compostos de recobrimento, como polímeros, hidrocarbonetos lineares e ramificados, nujol, glicerol, entre outros, em meio de diclorometano ou metanol. Foram registrados espectros de reflectância difusa na região de 1100 a 2300 nm. Os espectros obtidos foram submetidos à primeira derivada e as intensidades em 1688 nm (primeiro sobretom de ligações C-H) foram empregadas para a construção de uma curva em função da carga inicial (massa recobrimento/massa total) da amostra. Foram obtidos dois ramos lineares, o primeiro (praticamente paralelo à abscissa) indica que a imobilização do reagente no interior dos poros da sílica, e o segundo mostra um aumento crescente dos valores de primeira derivada, indicando o recobrimento de sua superfície externa. A intersecção destas duas retas fornece o valor de carga equivalente ao total preenchimento dos poros. Os resultados obtidos de volume de poro são concordantes com os valores fornecidos pelo método padrão (BJH), apresentando desvios padrão menores que 10%. O método proposto apresenta boa reprodutibilidade, com desvios menores que 1,0%, sendo rápido, simples e não destrutivo o que mostra uma grande vantagem frente ao método BJH, que faz uso de equipamentos caros e procedimentos lentos
Abstract: A method for the determination of pore volume of silicas, used as stationary phases for HPLC (High Performance Liquid Chromatography) was developed using near infrared spectroscopy (NIR). Samples were prepared by the addition of silica in covering compounds solutions of different concentrations, as linear and ramified polymers, hydrocarbons, nujol, glycerol, and among others, using dichloromethane or methanol as solvents. Diffuse reflectance spectra were registered in the 1100 to 2300 nm region. Spectra were submitted to a first derivative pre-treatment and the intensities at 1688 nm (first overtone of C-H bonds) were used for the construction of a curve as a function of the initial load (covering/total mass) of the sample. Two linear branches were obtained; the first one (practically parallel to the abscissa) indicates the immobilization of the reagent in the interior silica pores, and the second one shows increasing values of first derivative, indicating the covering of its external surface. The intersession of these two straight lines supplies the load value that is equivalent to the total fulfilling of the pores. The results obtained for of pore volume are in agreement with those supplied by the standard method (BJH), presenting deviation lower than 10 %. The proposed method presents good reproducibility with standard deviation lower than 1.0 %, being fast, simple and no destructive technique, that is a great advantage over the BJH method, which uses expensive equipment and slow procedures
Mestrado
Quimica Analitica
Mestre em Química
Vystavělová, Petra. « Použití spektroskopie v blízké infračervené oblasti pro charakterizaci suroviny pro výrobu slunečnicového oleje ». Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2016. http://www.nusl.cz/ntk/nusl-240780.
Texte intégralKennedy, Nathan. « Reservation Prices and Willingness to Accept Price Offers for Nonindustrial Forest Landowners in Western Virginia ». Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/33766.
Texte intégralMaster of Science
Rousset, Patrick. « Choix et validation expérimentale d'un modèle de pyrolyse pour le bois traité par haute température : de la micro-particule au bois massif ». Paris, ENGREF, 2004. http://www.theses.fr/2004ENGR0018.
Texte intégralThe thermal treatment of wood is a well known process that has been studied for many years. In spite of the large amount of research work injected into this topic, it is still a difficult task to identify the precise loss of product quality that has been incurred as a result of this process. This fact provides the motivation for a fundamental study that explains the mechanisms of thermal treatment. The first objective of this study is to adapt an existing computational model for simulating coupled heat and mass transfer in a porous medium to include the chemical reactions that arise during pyrolysis. Paralleling this work, near infrared spectrometry (NIRS) has been used to characterize large wood samples submitted to different thermal treatments. The results show that the pyrolysis model, when coupled to the comprehensive heat and mass transfer model, is able to account the effect of exothermic reactions on the internal overpressure within the board. NIRS seems to be a promising technique that we believe permits the profiles of degradation to be used to validate the computational model