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Dissertations / Theses on the topic 'Oxyma'

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Published: 4 June 2021
Last updated: 18 February 2022

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1

Subirós, Funosas Ramon. "Nous reactius d’acoblament per a la síntesi de pèptids basats en 2-ciano-2-hidroxiimino acetat d’etil (Oxyma) com a additiu." Doctoral thesis, Universitat de Barcelona, 2011. http://hdl.handle.net/10803/51298.

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Els pèptids són biopolímers naturals amb una importància cabdal en el cos humà, actuant com a neurotransmissors, endorfines o hormones. Recentment, s’han descobert propietats molt interessants de pèptids amb aplicacions científiques en camps tan diversos, com ara cosmètica, biotecnologia o química terapéutica. En el darrer cas, destaquen especialment certs pèptids d’origen marí amb una considerable activitat antitumoral, alguns dels qual es troben actualmente en avançades fases clíniques. Amb la intenció de millorar les propietats farmacològiques i farmacocinètiques dels pèptids bioactius, es
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2

Cordero, Crespo Beatriz. "Compostos polinuclears de Coure i Manganès amb lligands oxima. Estudi magnètic." Doctoral thesis, Universitat de Barcelona, 2012. http://hdl.handle.net/10803/119263.

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El treball que es presenta es basa en la síntesi i estudi estructural i magnètic de compostos polinuclears de coure i manganès amb lligands de tipus oxima. L’objectiu dels compostos de coure és l’estudi magnètic a baixa temperatura de sistemes de diverses nuclearitats basats en el triangle Cu3. En el cas dels compostos de manganès, l’objectiu és la síntesi de sistemes que presentin comportament d’imant unimolecular (o SMM). En aquest treball s’han emprat majoritàriament lligands tipus oxima, en les seves formes piridil, pirazil i saliciloxima. Tant per al manganès com per al coure, els compost
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3

Buxaderas, Pérez de Armiñán Eduardo. "Reacciones de acoplamiento de alquinos catalizadas por paladaciclos derivados de oxima." Doctoral thesis, Universidad de Alicante, 2014. http://hdl.handle.net/10045/41530.

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En la presente memoria se describe la aplicación de paladaciclos derivados de oxima como precatalizadores en diferentes reacciones de acoplamiento carbono-carbono y carbono-oxigeno que involucran alquinos como sustratos. En el primer capítulo se lleva a cabo un estudio sobre la reacción de Sonogashira-Hagihara de cloruros y bromuros de arilo desactivados en presencia de un complejo ciclopaladado derivado de oxima como precatalizador y diferentes ligandos auxiliares para la síntesis de alquinos, usando agua como disolvente y empleando irradiación por microondas como método de calentamiento. En
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4

Souza, Tereza Cristina Rozone de. "Estudos de reatividade de complexos de Fe (II) / Fe (III) amino-imino-oxima." reponame:Repositório Institucional da UFSC, 1991. http://repositorio.ufsc.br/xmlui/handle/123456789/75761.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciencias Fisicas e Matematicas<br>Made available in DSpace on 2012-10-16T04:12:07Z (GMT). No. of bitstreams: 0Bitstream added on 2016-01-08T17:17:27Z : No. of bitstreams: 1 81784.pdf: 2402092 bytes, checksum: fca874056fce62164760db4ba2bdcb8f (MD5)<br>Os ligantes oxima são ligantes relativamente novos. Uma característica muito importante destes ligantes é a existência de uma concentração localizada de carga negativa sobre o átomo metálico central e de um N- cromóforo provido de uma forte ligação sigma metal-ligante. O ob
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5

Dal, Magro Jacir. "Efeito do acido borico sobre a reação de formação da oxima da benzoina." reponame:Repositório Institucional da UFSC, 1993. http://repositorio.ufsc.br/xmlui/handle/123456789/75863.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciencias Fisicas e Matematicas<br>Made available in DSpace on 2012-10-16T05:08:54Z (GMT). No. of bitstreams: 0Bitstream added on 2016-01-08T18:31:38Z : No. of bitstreams: 1 97844.pdf: 2161552 bytes, checksum: 433bb924624bccead7d7229a51a0ef13 (MD5)<br>A reação entre a hidroxilamina e benzoína ocorre em duas etapas: formação de um intermediário de adição e a desidratação deste à oxima. A reação na presença de ácido bórico (0,01M) a pH 8,5 apresenta um aumento no valor de kobs em até l5 vezes. Este valor é maior na presen
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6

Freitas, Mayara Lutchemeyer de. "EFEITOS DA OXIMA BUTANO-2,3-DIONATIOSSEMICARBAZONA FRENTE AO DANO TESTICULAR CAUSADO POR CÁDMIO EM CAMUNDONGOS." Universidade Federal de Santa Maria, 2014. http://repositorio.ufsm.br/handle/1/5991.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>We investigated the action of butane-2,3-dione thiosemicarbazone oxime against the testicular damage caused by cadmium chloride (CdCl2) in mice swiss adult male. The animals received a single injection of CdCl2 at the dose of 5 mg/kg, intraperitoneally, and after thirty minutes, the oxime was administered subcutaneously at the dose of 10 mg/kg. Twenty four hours after administration of the oxime, the animals were euthanized the blood were collected and after killed the testes were removed for analysis. The parameters determined wer
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7

Levy, Noel Massinhan. "Reações com transferencia de eletrons : sintese, caracterização e eletroquimica de complexos de niquel (II) e ferro II) piridilimino-oxima." reponame:Repositório Institucional da UFSC, 1988. http://repositorio.ufsc.br/xmlui/handle/123456789/75466.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciencias Fisicas e Matematicas<br>Made available in DSpace on 2012-10-16T01:34:50Z (GMT). No. of bitstreams: 0Bitstream added on 2016-01-08T16:04:50Z : No. of bitstreams: 1 81766.pdf: 3509104 bytes, checksum: 8b01e9cf82ae880f24929dbbf19fea79 (MD5)<br>Os ligantes foram sintetizados em meio de eter diisopropílico e caracterizados com dados da literatura. Os complexos de níquel foram isolados a partir de uma mistura de 1:2 de sal de nitrato de níquel hexaaquo e de ligante, respectivamentee em meio alcoólico. Os complexos d
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8

Gonsalves, Arlan de Assis. "Síntese de bioadsorvente derivado da quitosana e aplicação na pré-concentração e determinação de íons cobre (II) em álcool etílico combustível por espectrofotometria." Universidade Federal de Alagoas, 2012. http://www.repositorio.ufal.br/handle/riufal/2072.

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The present work approaches the preparation of a new resin derived from chitosan and its application in the flow preconcentration and spectrophotometric determination of Cu2+ ions in ethanol fuel. The adsorbent was prepared from the functionalization of chitosan with the α-hydroxy-oxime (3-chloro-1-hydroxy-3-methylbutane-2-one oxime) whose modification was confirmed by elemental analysis, FTIR and MEV. Studies of complexation between the ligand and Cu2+ ions showed that the coordination compound has a green color, is  slightly soluble in water, preferably formed at pH 5.8 and absorbs st
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9

Garrofé, Ochoa Xènia. "Anàlisi dels mecanismes moleculars implicats en els processos de mort cel·lular causats per Roscovitina i 7-Bromoindirubina-3'-Oxima(7BIO)." Doctoral thesis, Universitat de Lleida, 2010. http://hdl.handle.net/10803/8108.

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10

Medeiros, Manoel Lima de. "Estudos cineticos das reações redox entre complexos de ferro com o ligante hexadentado amino-imino-oxima e policarboxilato de cobalto." reponame:Repositório Institucional da UFSC, 1987. http://repositorio.ufsc.br/xmlui/handle/123456789/75436.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciencias Fisicas e Matematicas<br>Made available in DSpace on 2012-10-16T01:18:17Z (GMT). No. of bitstreams: 0Bitstream added on 2016-01-08T15:47:56Z : No. of bitstreams: 1 96501.pdf: 3455379 bytes, checksum: 13537194c0c154720b8a5931219b00fa (MD5)<br>Os complexos FeIILH22+ e FeIIILH2+ onde LH2 é um ligante hexadentado, 3,14-dimetil-4,7,10,13-tetraazahexedeca-3,13-dieno-2,15-diona dioxima, foram estudados através das reações cruzadas com os complexos, CoIII(EDTA)-, CoII(EDTA)2- , CoIII(OX)33- e CoIII(dipic)2- . Para as r
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11

Veras, Robson Cavalcante. "Participação da via do óxido nítrico na resposta relaxante induzida por E- cinamaldeído-oxima em artéria mesentérica superior isolada de rato." Universidade Federal da Paraí­ba, 2009. http://tede.biblioteca.ufpb.br:8080/handle/tede/6737.

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Made available in DSpace on 2015-05-14T12:59:37Z (GMT). No. of bitstreams: 1 parte1.pdf: 2125844 bytes, checksum: f5e0174d3679c5bce4f74af8ed1b3d4f (MD5) Previous issue date: 2009-08-30<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>Decreased availability of NO in the vasculature promotes the progression of cardiovascular diseases and oximes represents a NO-donor group capable of to restore this defictIn rat superior mesenteric arterial rings, as non-aromatic oximes: diacetylmonoxime and dimetylglycone-oxime, as aromatic oximes: benzofenone-oxime, 4-Cl-benzofenone
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12

Domingos, Josiel Barbosa. "Reações intramoleculares de amidas e ésteres derivados da oxima do ácido 9-fluorenona-1-carboxílico :: síntese dos compostos modelo e estudos mecanísticos /." Florianópolis, SC, 1999. http://repositorio.ufsc.br/xmlui/handle/123456789/81139.

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Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas.<br>Made available in DSpace on 2012-10-18T23:34:59Z (GMT). No. of bitstreams: 0Bitstream added on 2016-01-09T03:05:42Z : No. of bitstreams: 1 151477.pdf: 5518425 bytes, checksum: bfc242dafa467915c142eff3f35ce598 (MD5)
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13

Puntel, Gustavo Orione. "Análise das propriedades antioxidantes das oximas 3-(fenil hidrazona) butano-2-ona e butano-2,3-dionatiosemicarbazona." Universidade Federal de Santa Maria, 2008. http://repositorio.ufsm.br/handle/1/11087.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Oximes are chemical compounds used to reactivate the inhibited acetylcholinesterase (AChE) enzyme by organophosphates (OPs). The OPs, besides classically recognized as AChE irreversible inhibitors, are also involved in the generation of oxidative stress conditions. However, researches focusing on the possible antioxidant properties of oximes are lacking in the literature. The aim of this study was to investigate the potential antioxidant and toxic properties of 3-(phenylhydrazono)butan-2-one oxime and butane-2,3-dionethiosemicarbaz
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14

Burés, Amat Jordi. "Aplicació i estudis mecànics de les reaccions de trimetilfosfina i diversos activadors amb nitrocompostos alifàtics, oximes i azides." Doctoral thesis, Universitat de Barcelona, 2009. http://hdl.handle.net/10803/2825.

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En la present Tesi s'ha estudiat l'efecte de diversos activadors de trimetilfosfina en diferents reaccions i s'ha fet l'esforç d'esbrinar els mecanismes de reacció. Així s'han pogut racionalitzar els comportaments dels activadors, cosa que ha permès de desenvolupar nous mètodes de síntesi o millorar-ne d'altres.<br/><br/>En el capítol 1.2 s'ha optimitzat la transformació de nitroalcans secundaris en cetones. Els millors activadors per dur a terme la reacció reacció són el disulfur de 4-terc-butiltiofenil i l'N-(fenilseleno)ftalimida. La reacció té lloc llavors de manera suau, catalítica i sens
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15

Ceccato, Augusto Suzin. "Cinética e mecanismo da oxidação da tiouréia através de complexos de Fe(III)-Uma correlação linear de energia livre para reações entre xomplexos de pentacianoferratos(II) e cobaltatos(III)- Diiminos e ni(III)- amino-oxima-imino." Florianópolis, SC, 1986. http://repositorio.ufsc.br/xmlui/handle/123456789/75308.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Curso de Pós-Graduação em Físico-Química<br>Made available in DSpace on 2012-10-16T00:05:21Z (GMT). No. of bitstreams: 0Bitstream added on 2016-01-08T15:33:37Z : No. of bitstreams: 1 202875.pdf: 1876760 bytes, checksum: 9c48b63eb4f36ecadc54990325825a5e (MD5)
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16

Jiménez-Castells, Carmen 1982. "Capture and identification of carbohydrate-binding proteins by SPR and CREDEX-MS." Doctoral thesis, Universitat Pompeu Fabra, 2010. http://hdl.handle.net/10803/7237.

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Carbohydrate-binding proteins of non-immunological origin -lectins- have been recognized over the last decades as decisive players in numerous biological processes, ranging from cellcell communication, fertilization, pathogen-cell adhesion to metastasis. Consequently, there is an increasing interest in finding powerful and nanosized tools to screen for these molecules and to study their carbohydrate interactions in detail. Here, two complementary approaches are described to characterize lectin-carbohydrate interactions with high sensitivity, low sample consumption, and without the need for sam
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17

Botella, Segura Luis. "Reacciones de acoplamiento en medio acuoso catalizadas por complejos oxima-paladaciclo." Doctoral thesis, 2004. http://hdl.handle.net/10045/9991.

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Este trabajo ha sido posible gracias a la financiación por parte del Ministerio de Ciencia y Tecnología (proyecto BQU2001-0724-02-01), así como por una beca predoctoral concedida por la Oficina de Ciencia i Tecnología de la Generalitat Valenciana.
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18

Liu, Chiu-Hung, and 劉久弘. "Bionomics of Four Rice Grasshopper Species of Oxya (Orthoptera: Acrididae) of Taiwan." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/62331678599981296130.

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碩士<br>國立臺灣大學<br>昆蟲學研究所<br>89<br>The effect of breeding temperatures, five constant temperatures of 20, 25, 28, 30 and 35℃, on three grasshopper species Oxya chinensis formosana, O. hyla intricata and O. japonica japonica from Taiwan were studied. The low development threshold temperatures and effective accumulated temperatures of male and female O. chinensis formosana were 11.86℃, 979.1DD and 12.73℃, 1015DD respectively. The longest development time of both male and female were at 20℃ and the shortest were at 28℃. The low development threshold temperatures and effective accumulated temperature
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19

Liu, Chung-Chi, and 劉中琪. "Use of DNA Markers for the Discriminations of Bemisia tabaci Biotypes and Construction of Phylogenetic Relationship among Four Species of Oxya Grasshoppers in Taiwan." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/41066907024939881378.

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碩士<br>國立臺灣大學<br>昆蟲學研究所<br>89<br>The phylogenetic relationships among Bemisia tabaci species complex (A and B biotype) and four rice grasshoppers (Oxya spp.) in Taiwan were analyzed by molecular markers (RAPD-PCR, rDNA, and mtDNA). The A and B biotype of B. tabaci could be discriminated by RAPD-PCR with four selected primers (OPA01, F12, 91167, and 91074). The result confirmed that both A and B biotype of this whitefly really exist in Taiwan. The specific primer set (Baf/Bar) was designed based on the nucleotide sequence of the amplicon, amplified by RAPD-PCR with primer 91074. This primer set,
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20

Marques, Cátia Filipa Sousa. "Evaluation of cytotoxic activity of synthetic bis-indolyl methanes: structure-activity relationship." Master's thesis, 2016. http://hdl.handle.net/10400.1/9858.

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Dissertação de mestrado, Ciências Farmacêuticas, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2016<br>Cancer is defined as a group of more than 100 diseases responsible for uncontrolled cellular growth, local tissue invasion and distant metastases. In 2012, the World Health Organization expected a rise by about 70% of the number of new cases of cancer in the next two decades. With the exponential development of cancer and the low survival ratio for leukaemia and lymphoma, it is urgent to develop new drugs able to fight cancer cells and improve anticancer treatments. The study
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