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Rozprawy doktorskie na temat „Cyanea”

Autor: Grafiati
Data publikacji: 27 lipca 2024
Data aktualizacji: 31 lipca 2025

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1

Morris, Dana L. "Effects of forest fragmentation on reproductive effort and productivity of Indigo buntings (Passerina cyanea)." Diss., Columbia, Mo. : University of Missouri-Columbia, 2005. http://hdl.handle.net/10355/4118.

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Thesis (Ph. D.)--University of Missouri-Columbia, 2005.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (July 18, 2006) Vita. Includes bibliographical references.
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2

Inden-Lohmar, Christoph. "Sukzession, Struktur und Dynamik von Libellenpopulationen an Kleingewässern, unter besonderer Berücksichtigung der Ökologie von Aeshna cyanea (Müller, 1764) /." [S.l. : s.n.], 1997. http://www.gbv.de/dms/bs/toc/243389426.pdf.

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3

Gronell, Ann M. "Sexual dimorphism : its causes and correlates in the orange-tailed blue damselfish, Chrysiptera cyanea (Pisces : Pomacentridae)." Phd thesis, Department of Zoology, 1988. http://hdl.handle.net/2123/12043.

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4

Belemtougri, Gourounga Raymond. "Détection immunohistochimique de molécules peptidiques et d'amines : leur coexistence dans le système nerveux d'Aeshna cyanea (insecte, odonate)." Lille 1, 1986. http://www.theses.fr/1986LIL10065.

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Belemtougri, Gourounga. "Détection immunohistochimique de molécules peptidiques et d'amines, leur coexistence dans le système nerveux d'Aeshna cyanea, insecte, odonate." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37595822s.

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6

Boonzaier, Julia. "Morphology and mucin histochemistry of the gastrointestinal tracts of three insectivorous mammals : Acomys spinosissimus, Crocidura cyanea and Amblysomus hottentotus." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/20220.

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Thesis (MsCMedSc)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: The gastrointestinal morphology and the distribution of the different types of mucin secreting goblet cells were investigated in three mammalian insectivorous species, namely A. spinosissimus, C. cyanea and A. hottentotus. The aim of the study was to provide a comprehensive morphological comparison between the different species. Another aim was to illustrate and compare the distribution of mucins (neutral, sulfo- and sialomucins) in the gastrointestinal tracts (GITs) of these species, in order to better understand the quali
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7

Ceder, Patric, and Christopher Jönsson. "Tillväxttakt hos sydsvenska populationer av trollsländor (Odonata) i ett varmare klimat - en pilotstudie." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-35081.

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In order to gain better understanding of climate change effects on ecosystems, it is necessary to study the response of different species to predicted climate change. Dragonflies are, due to their ecology, a suitable organism group for conducting such studies. In this pilot study we examined the response in growth- and mortality rate to increased ambient temperatures in an experimental set-up of three temperature levels (20°C, 22°C och 24°C) in larvae of three species from the Aeshnidae family (Aeshna grandis, Aeshna cyanea and Anax imperator). A. imperator were, due to insufficient number of
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8

Guard, Martin. "Assessment of the artisanal fishery for Octopus cyanea Gray 1849 in Tanzania : catch dynamics, fisheries biology, socio-economics and implications for management." Thesis, University of Aberdeen, 2003. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=232573.

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Catch dynamics, fisheries biology and socio-economic dependence are described for the artisanal fishery for Octopus cyanea at three study sites (Kwale. Jibondo, and Mtwara) along the coat of Tanzania. A total of 23,165 octopuses were measured and sexed from 3,514 individual catches. FIShing effort was shown to be 2.9 times greater at Msangamkuu compared to Jibondo and nearly two times more than Kwale. Number of relaxation days between fishing events, when the octopus stock are able to recover through growth and immigration, was shown to be greater at Iibondo than for the other two sites. Marke
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9

Caron, Laurent. "Epuration en cuivre de bains de décapage sulfurique : mise au point d'un procédé couplant extraction liquide - liquide et dépôt électrochimique." Châtenay-Malabry, Ecole centrale de Paris, 1999. http://www.theses.fr/1999ECAP0620.

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L'étirage à froid de tubes en acier nécessite une préparation de leur surface. Celle-ci implique l'élimination de la couche d'oxydes superficiels ou décapage. Les tubes sont alors plongés dans un bain d'acide sulfurique à 70°C. Impureté de l'acier, le cuivre est mis en solution lors du décapage puis recouvre la surface du tube au-delà d'une certaine concentration ce qui gêne les opérations ultérieures. Par cette étude, nous nous proposons de mettre au point un procédé d'élimination du cuivre du bain de décapage basé sur le couplage de l'extraction liquide-liquide et du dépôt électrochimique. L
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10

Kihlbom, Caroline. "Separation of Cobalt and Nickel using CYANEX 272 for Solvent Extraction." Thesis, KTH, Kemiteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-293919.

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This project aimed to examine the separation of cobalt and nickel using solvent extraction (SX) with the extractant CYANEX 272 (C272). It was intended to investigate the Co-Ni separation in a sulphate-based leach solution in presence of other contaminants. This is an area of interest because of the difficulty of separating metals of similar properties within the field of hydrometallurgy.  Batch tests, with varying modifiers and diluents, were carried out to examine the effect of organic phase composition on phase separation. The effect of pH on equilibrium was investigated by constructing equi
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11

Lanagan, Matthew D. "The solvent extraction behaviour of chromium with Bis (2,4,4-trimethylpentyl) phosphinic acid (Cyanex [R] 272)." Thesis, Curtin University, 2003. http://hdl.handle.net/20.500.11937/528.

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The bulk of the world's known nickel reserves are contained in laterite ores but sulphidic ores remain the main source of the Western world's nickel production. With the continuing increase in nickel consumption and the depletion of sulphidic ores, the traditional source of nickel, the extraction of nickel from lateritic ores has been the subject of research interest worldwide. Advances in pressure acid leaching (PAL) technology have resulted in significant commercial attempts to extract nickel from these ores. Leaching the ore with sulphuric acid at elevated temperatures and pressures allows
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12

El-Ammouri, Elias G. "Hafnium solvent extraction from chloride solutions using organophosphorus reagents (Cyanex 923, 925)." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=69792.

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A comparison of hafnium solvent extraction from hydrochloric acid solutions using either Cyanex 923 or 925 (organic extractants) diluted in kerosene was established. Since understanding of the hafnium-hydrochloric acid solution is important, development of a speciation diagram for such a solution was carried out. While both Cyanex 923 and 925 are mixtures of trialkyl phosphine oxides, the trialkyl group in the former have straight chains, while those in the latter have branched chains.<br>Experimentally, the major variables studied were hydrochloric acid, hafnium and Cyanex concentrations. Haf
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13

Souza, Ariane Gaspari Oliveira. "Recuperação de óxido de escândio de alta pureza de resíduos industriais da cadeia de produção do níquel." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-22082016-110903/.

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O Escândio é um elemento terra rara, utilizado principalmente em ligas de alumínio, células combustíveis de óxido sólido e na produção de lâmpadas de haletos metálicos. Apesar de ser o 31° elemento mais abundante na crosta terrestre, raramente é encontrado concentrado na crosta terrestre, e sua produção é sempre associada ao processamento de outros minerais na forma de um subproduto, ou a recuperação de sucata. Minérios de Níquel podem conter teores de Sc variando de 50 a 350ppm e resíduos gerados durante seu processamento pode concentrar o Sc acima de 1000ppm. A recuperação do Escândio de um
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14

Ebel, Mathias. "Cyanid-Phytoremediation mit Eichhornia crassipes eine alternative Methode zur Aufbereitung cyanid- und kupferhaltiger Abwässer aus dem Goldbergbau /." [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=983420270.

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15

Ehsan, Rashidian. "Biosystematics of the Streptomyces cyaneus species-group." Thesis, University of Newcastle Upon Tyne, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364845.

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16

Lanagan, Matthew D. "The solvent extraction behaviour of chromium with Bis (2,4,4-trimethylpentyl) phosphinic acid (Cyanex [R] 272)." Curtin University of Technology, Western Australian School of Mines, 2003. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=12947.

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The bulk of the world's known nickel reserves are contained in laterite ores but sulphidic ores remain the main source of the Western world's nickel production. With the continuing increase in nickel consumption and the depletion of sulphidic ores, the traditional source of nickel, the extraction of nickel from lateritic ores has been the subject of research interest worldwide. Advances in pressure acid leaching (PAL) technology have resulted in significant commercial attempts to extract nickel from these ores. Leaching the ore with sulphuric acid at elevated temperatures and pressures allows
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17

Zhao, Ningfeng Eichhorn David M. "Cyano-substituted polypyrazolylborate metal complexes." Diss., Click here for available full-text of this thesis, 2005. http://library.wichita.edu/digitallibrary/etd/2005/d019.pdf.

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Thesis (Ph.D.)--Wichita State University, College of Liberal Arts and Sciences, Dept. of Chemistry.<br>"December 2005." Title from PDF title page (viewed on February 8, 2007). Thesis adviser: David Eichhorn. Includes bibliographic references (leaves 123-128).
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18

Greminger, Wolfgang [Verfasser]. "Hydrochemische Prozesse und Cyanid-Freisetzung in Eisenhüttenaltsanden und Gichtgasschlämmen sowie Cyanid-Abbau in Oberflächengewässern und in einer Pflanzenkläranlage / Wolfgang Greminger." Mainz : Universitätsbibliothek der Johannes Gutenberg-Universität Mainz, 2016. http://d-nb.info/1225685834/34.

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19

Lanagan, Matthew Derek. "The solvent extraction behaviour of chromium with Bis (2,4,4-trimethylpentyl) phosphinic acid (Cyanex(R) 272) /." Full text available, 2002. http://adt.curtin.edu.au/theses/available/adt-WCU20030703.091319.

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20

Aliprandini, Paula. "O uso da extração por solventes para tratamento de licor de lixiviação de minério limonítico de níquel." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-23022017-110109/.

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O minério limonítico de níquel é considerado uma fonte de níquel e cobalto a partir de mineração. No entanto, o minério é heterogêneo e a concentração dos metais varia conforme a localização. Sendo assim, é necessário o desenvolvimento de uma metodologia que permita determinar os parâmetros de operação de um processo de separação de metais levando em consideração a composição de cada minério. No processo hidrometalúrgico, diversas técnicas de purificação ou separação dos metais podem ser usadas. O presente trabalho estudou o uso da extração por solventes para tratar o licor baseado no lixiviad
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21

Macpherson, Brendan P. "Discrete cyano-bridged mixed valence systems /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17778.pdf.

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22

Zhu, Jia Liang. "Reductive alkylation of Ã-cyano ketones." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq39611.pdf.

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23

Giovanacci, Peter Andrew. "Photodissociation of cyano and nitroso compounds." Thesis, Heriot-Watt University, 1989. http://hdl.handle.net/10399/930.

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24

Madders, Michael. "The efforts of forestry on hen harriers Circus cyaneus." Thesis, University of Glasgow, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362944.

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Kumwimba, Ghislain Mutamba. "Effect of process variables on the kinetic and thermodynamic parameters of platinum solvent extraction by cyanex 921." Thesis, Cape Peninsula University of Technology, 2012. http://hdl.handle.net/20.500.11838/870.

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Thesis(MTech( Engineering))--Cape Peninsula University of Technology, 2012<br>Platinum is a precious metal which may be processed under acidic conditions. Accordingly, the extraction of platinum from an acidic chloride media is of immense practical importance. In this study, the extraction of platinum was investigated in a Pt(IV)-HCl-Cyanex 921 matrix in order to establish the effect of temperature, extractant concentration, pH and the initial platinum concentration which had been used in the evaluated solvent extraction (SX) process. The extractant phase contained a mixture of Cyanex 921 and
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26

Souza, Marcel Felipe Alves de. "Extração por solventes sinérgica aplicada à separação níquel/cálcio utilizando-se os extratantes Cyanex 272 e D2HEPA." Universidade Federal de Minas Gerais, 2015. http://hdl.handle.net/1843/BUBD-9WUH4D.

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The present work examined the synergistic extraction solvent applied to the separation of calcium and nickel present in synthetic aqueous sulfuric solutions using the commercial organophosphorus extractants D2EHPA (di-2-ethylhexyl phosphoric acid) and Cyanex 272 (bis-2,4,4 -trimethylpentyl phosphinic acid), diluted in n-heptane. The objective was to evaluate the effects of competition between metals in the aqueous phase and between the extractants in the organic phase, both individually and simultaneously. To this end, extractions were analyzed using combinations of mono and bicomponents aqueo
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Rafiq, Shagufta. "Microbial transformations of nitro- and cyano-arenes." Thesis, University of Edinburgh, 2001. http://hdl.handle.net/1842/11292.

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Ouillon, Isabelle. "Copolymérisation de monomères captodatifs avec des dérives cyanés : caracterisations et propriétés." Saint-Etienne, 1997. http://www.theses.fr/1997STET4010.

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Depuis la découverte du caractère piézoélectrique du copolymère alterne et amorphe préparé à partir du cyanure de vinylidene et de l'acétate de vinyle, de nombreux copolymères similaires ont été synthétisés. Nous avons effectué la copolymérisation de dérives cyanés avec des monomères captodatifs. Ils possèdent sur le même carbone un groupe donneur et accepteur d'électrons. Les synthèses de deux monomères captodatifs ont été effectuées : le méthyl - - acétoxyacrylate (maa) et le méthyl - 4 - méthoxycarbonylvinycarbonate (mmc) ainsi que la synthèse d'un dérive cyané le cyanure de vinylidene (vcn
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29

Hort, Mariana Appel. "Estudo das atividades vasodilatadora e antioxidante de Cyathea phalerata Mart (Cyatheaceae)." Florianópolis, SC, 2006. http://repositorio.ufsc.br/xmlui/handle/123456789/88723.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas. Programa de Pós-Graduação em Farmacologia<br>Made available in DSpace on 2012-10-22T12:49:31Z (GMT). No. of bitstreams: 1 230241.pdf: 975395 bytes, checksum: e71c6d82630aa4dba1e9f2852b78bd59 (MD5)<br>O estresse oxidativo desempenha um importante papel na patogênese de várias doenças humanas, tais como injúria por isquemia e reperfusão, aterosclerose, doenças neurodegenerativas e câncer. No sistema cardiovascular, os radicais livres estão envolvidos principalmente no desenvolvimento da hipertensão e
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30

McClurg, Ryan W. "Synthesis of 2-amino-3-cyano-4H-chromenes." CardinalScholar 1.0, 2010. http://liblink.bsu.edu/uhtbin/catkey/1569021.

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The Knoevenagel reaction is defined by the condensation of an aldehyde or ketone with a carbon nucleophile produced by the deprotonation of a methylene species whose acidity is dramatically increased by bonds to strongly electron withdrawing groups. Previously, our group developed an effective one-pot method for the preparation of 4H-chromenes using sodium borohydride reduction of the cyclized intermediates formed by the Knoevenagel condensation of malononitrile with salicylaldehydes in aqueous ethanol. In this study we outline the extension of these strategies to include 2’-hydoxyphenylketone
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31

Al-Jebouri, Hamza Yaseen. "Synthesis of butadiene sulphone derivatives with cyano substituents." Thesis, University of Surrey, 1985. http://epubs.surrey.ac.uk/847181/.

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The vicinal dicyano compounds are good starting materials for the synthesis of macromolecules such as phthalocyanines and tetrazaporphins. The synthesis of cyano compounds and vicinal dicyano compounds, particularly the cyano derivatives of butadiene sulphones have been studied in this work. This thesis is divided into five chapters as follows: The first chapter contains a general introduction about organic cyanides; their preparations, reactions and applications. In the second chapter, the synthesis of butadiene sulphone derivatives leading to mono and dicyano substituents is dealt with. It i
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32

Raynaud, Michèle. "Application des méthodes de la chimie quantique à l'étude de la réactivité et des propriétés électroniques de composés organiques cyanés." Paris 11, 1989. http://www.theses.fr/1989PA112298.

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Les fonctions d'ondes ab-initio de molécules vinyliques cyanées, comme l'acrylonitrile et l'allyl cyanide, en présence d'un champ électrique intense, ont été calculées dans le but d'étudier les effets in­ duits par le champ sur les propriétés et la réactivité de ces composés. Un champ très intense doit être imposé pour induire un déplacement électronique significatif par rapport à celui provoqué hors champ par le groupement CN lui-même. On observe un transfert électronique opposé entre élec­ tron pi et sigma et une augmentation de la polarité de la liaison vinylique. L'évolution sous champ des
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33

Randi, Áurea Maria. "Aspectos fotomorfogênicos, bioquimicos e citoquímicos durante a germinação de cyathea delgadii sternb." Campinas, 1987. http://repositorio.ufsc.br/xmlui/handle/123456789/75382.

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Dissertacão (mestrado) - Universidade Estadual de Campinas. Instituto de Biologia. Programa de Pós-Graduação de Ciências Biologicas<br>Made available in DSpace on 2012-10-16T00:47:40Z (GMT). No. of bitstreams: 0Bitstream added on 2013-07-16T17:09:23Z : No. of bitstreams: 1 264782.pdf: 4740486 bytes, checksum: fdda9cf55fbe989717731fe2b009df86 (MD5)
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McCullagh, John Francis. "Chromatographic studies of nucleophilic substitution in cyano cobalt complexes." Thesis, Queen's University Belfast, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356946.

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Etienne, Michel. "Réactivité de complexes dinucléaires hydrure et alcénylidène ponte du fer vis-a-vis d'hydrocarbures cyanes insatures (mono et dicyanoacétylène, tétracyanoethylène)." Brest, 1988. http://www.theses.fr/1988BRES2009.

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Preparation de complexes avec des coordinats cyano-4 butadienyldene portants. On obtient egalement des complexes dinucleaires avec le tricyano-3,4,4 butadienylidene-1,3. Mecanisme ses reactions de migration de l'hydrogene allylique
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Guimaraes, Alexandre Silva. "Purificação de níquel a partir de soluções sulfúricas por extração por solventes utilizando-se Cyanex 272 e misturas de extratantes." Universidade Federal de Minas Gerais, 2014. http://hdl.handle.net/1843/BUBD-9KGT73.

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The purification of aqueous solutions simulating leach liquors of sulfuric acid lateritic ores containing calcium, cobalt, copper, magnesium, manganese, nickel and zinc employing the solvent extraction technique using the extractant Cyanex 272 and mixtures of Cyanex 272 with versatic acid, Cyanex 301, naphthenic acid, mixture of carboxylic acids (MAC) and D2EHPA, diluted in n-heptane, was investigated in the present work. The main objective was to develop an organic extraction system formed by combining suitable extractants aiming to obtain a liquor purity in conditions such that allow its dir
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GOMES, DE LIMA LUIS CARLOS. "Reactions d'alcynes cyanes (monocyanoacethylene et dicyanoacethylene), vis-a-vis de complexes organometalliques du fer, du cobalt, du molybdene et du tungstene." Brest, 1986. http://www.theses.fr/1986BRES2009.

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Etude de la reactivite de complexes thiolates du fer et du tungstene (cp(co)::(n) m(sch::(3))) vis a vis du mono et du dicyanoacetylene. Aptitude des complexes de co(i) a intervenir dans la formation de molecules organiques. Nature des liaisons m-pb(m=mo ou w) dans les complexes cp(co)::(3)m-pbr::(3) et (cp(co)::(3)m)::(2) pbr::(2). Donnes de rmn de **(95)mo et **(207)pb
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38

Bellanger, Solène. "Etude de la biologie d'une messicole en régression : le bleuet (Centaurea cyanus L.)." Phd thesis, Université de Bourgogne, 2011. http://tel.archives-ouvertes.fr/tel-00741148.

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Depuis les années 1950, l'intensification des pratiques agricoles concourt à une augmentation de la pression anthropique entraînant une raréfaction des espèces spécialistes des parcelles cultivées, ce qui contribue à l'érosion de la diversité biologique des agroécosystèmes. Parmi les espèces en déclin, on compte de nombreuses messicoles dont le bleuet (Centaurea cyanus L.), fleur emblématique des moissons. Or, cette espèce peut rendre des services écosystémiques comme hôte de prédateurs de ravageurs des cultures et ressource privilégiée de certains pollinisateurs qui justifieraient son maintie
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Karlsson, Emil. "Examining the competitive abilities of cornflower (Centaurea cyanus) in a growth chamber experiment." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-155573.

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Competition between different species (interspecific competition) is an important factor to consider when estimating population trends, geographic distributions, and management options of species. Many historically common vascular plant species found in agricultural environments have been negatively affected by changes in community composition and in turn, changes in competition pressures. Even so, the relative importance of plant competition in an ecological context is still unclear. In this study I examine the competitive ability of the meadow plant cornflower (Centaurea cyanus L.) when grow
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FALQUE, VIRGINIE. "Syntheses de 2-cyano-1,2,5,6-tetrahydropyridines substituees et de 4-cyano-1,4,6,7,12,12b-hexahydroindolo2,3-aquinolizines par transfert monoelectronique photocatalytique. Applications a la synthese d'alacaloides indoliques." Paris 6, 1997. http://www.theses.fr/1997PA066325.

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Ce travail a consiste en l'extension d'une nouvelle methode efficace de formation d'-aminonitriles, aux derives n-tryptophyl-#3-piperidiniques, aux indolo2,3-aquinolizidines et aux 1,2,5,6-tetrahydropyridines chirales. Cette methode mise au point au laboratoire, realisee par une photocatalyse par transfert monoelectronique a partir d'une amine tertiaire, conduit a un iminium piege in situ sous forme d'-aminonitrile. Ce derive cyane, ainsi obtenu reagit avec un nucleophile pour conduire a des additions 1,2 ou 1,4. Ainsi, une etude d'obtention de 2-cyano-n-tryptophyl-1,2,5,6-tetrahydropyridines
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Szafranowska, Barbara [Verfasser]. "Coordination Complexes and Networks with Cyano-Substituted Azolates / Barbara Szafranowska." Bonn : Universitäts- und Landesbibliothek Bonn, 2015. http://d-nb.info/1079273271/34.

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Magnier, Dominique. "Structure et thermodynamique de cristaux mixtes de cyano et chloroadamantane." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37599329s.

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Randi, Aurea Maria. "Aspectos fotomorfogenicos, bioquimicos e citoquimicos durante a germinação de esporos de cyatha delgadii Sternb." [s.n.], 1987. http://repositorio.unicamp.br/jspui/handle/REPOSIP/315052.

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Orientador : Gil Martins Felippe<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-07-16T23:16:42Z (GMT). No. of bitstreams: 1 Randi_AureaMaria_D.pdf: 10867051 bytes, checksum: 82addb5c87143254204dfb5c093700f1 (MD5) Previous issue date: 1987<br>Resumo: As pteridófitas representam um grupo que produz esporos potencialmente úteis para análises fisiológicas e bioquímicas da germinação. No Brasil, há poucos estudos sobre a germinação de esporos de samanbaias. Decidiu-se então realizar estudos dos aspectos da fotomorfogênese de espo
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Villarreal, y. López Eva Gloria. "NMR-spektroskopische Untersuchungen an Peptiden und Proteinen Untersuchungen zu Omphalotin und unter Verwendung des Programms CYANA zur IIB-Domäne des Mannosetransporters /." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=972265880.

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Urban, Victoria. "Synthesen und Strukturuntersuchungen von Cyano- und Thiocyanato-halogeno-d10-metallaten(I)." [S.l. : s.n.], 2000. http://www.diss.fu-berlin.de/2001/26/index.html.

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Jalilehvand, Farideh. "Structure of hydrated ions and cyano complexes by X-absorption spectroscopy." Doctoral thesis, KTH, Chemistry, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2963.

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Tominaga, Taiga. "Structural studies on cyano group biosynthesis by [NiFe] hydrogenase maturation proteins." 京都大学 (Kyoto University), 2013. http://hdl.handle.net/2433/180637.

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Hergué, Noémie. "Nouveaux polymères conjugués dérivés de 4-cyano-3alcoxythiophènes et de dialcoxythiénothiophènes." Angers, 2007. http://www.theses.fr/2007ANGE0049.

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Ce travail porte sur la synthèse de nouveeux polymères utilisant des motifs alcoxythiophènes. Après un rappel sur les propriétés des systèmes conjugués linèaires, la première partie est consacrée à la présentation de nombreux polyalcoxythiophènes décrit dans la littérature. Elle met l'accent sur les effets éléctroniques et structurant des groupements alcoxy sur les propriétés des système conjugués. La seconde partie décrit la synthèse d'un nouveau système donneur/accepteur et la préparation des polymères associés. L'introduction des deux groupements donneur ( alcoxy) et accepteur (nitrile)d'él
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Claytor, Robinson C. P. "Structure and microwave spectrum of the 2-cyano-2-propyl radical." Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/53935.

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The rotational spectra of the 2-cyano-2-propyl and d⁶-2·cyano-2-propyl radicals were observed using a Stark modulated spectrometer. The radicals were generated in the gas phase by UV irradiation of sublimed azoisobisbutyronitrile. They were detectable in the cell for approximately one hour. Thirty-three transitions were assigned for (CH₃)₂CCN and twenty-one for (CD₃)₂CCN. The rigid rotor rotational constants determined by calculation of the hypothetical unsplit rotational transitions are A=8276.7, B=3919.7, C=2751.5Mhz for (CH₃)₂CCN and A=6241.3, B=3490.7, C=2372.6Mhz for (CD₃)₂CCN. A progra
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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.

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Memoria para optar al título de Químico<br>En 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.
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