Results 11 to 20 of about 1,448,570 (154)

Os fundamentos quânticos da Ressonância Magnética Nuclear

Revista Brasileira de Ensino de Física, 2017
A ressonância magnética nuclear (RMN) encontra inúmeras aplicações em Física, Química, Engenharia e Medicina. Ela é utilizada sobretudo na análise de composição e estrutura de materiais, tanto sólidos quanto líquidos, e na realização de imagens ...
Celia M. Tokarski Dieguez, Lecio V. Montanheiro, L. Berbeka Cleto, Marlio J.C. Bonfim, C.A. Dartora   +4 more
doaj   +2 more sources

Papel da ressonância magnética nuclear cardíaca na terapia de ressincronizaçao cardíaca [PDF]

Journal of Cardiac Arrhythmias, 2017
A insuficiência cardíaca é um importante problema de saúde pública. As modificaçoes cardíacas estruturais que surgem com o processo de cronificaçao da insuficiência cardíaca levam a anormalidades na contraçao miocárdica e à dessincronizaçao ventricular ...
Marina Macedo Kuenzer Bond, Rafael Ozorio Alves da Silva, Decarthon Vitor Dantas Targino, Fernando Panchano Castro, Renata Scharf, Manoella de Macedo Gomes, Mariana Brito de Almeida, Juan Carlos Pachón Mateos   +7 more
doaj   +5 more sources

Avaliação por ressonância magnética nuclear de fístulas peri-anais. [PDF]

Acta Médica Portuguesa, 2007
Fistula in ano is a frequent disease, which often has a difficult diagnosis and mapping, and comports significant morbidity. Today, Magnetic Resonance (MRI) allows a rapid, simple and precise mapping of peri anal fistula, which leads to a correct ...
Ana Nassauer Mónica, A Costa, C Aleluia
doaj   +2 more sources

Orientações para Realização de Exames de Ressonância Magnética Nuclear em Pacientes com Dispositivos Eletrônicos Cardíacos [PDF]

Journal of Cardiac Arrhythmias, 2019
Estima-se que até 75% dos pacientes com dispositivos cardíacos eletrônicos implantáveis (DCEIs) terão indicação de exame de ressonância nuclear magnética (RNM) ao longo da vida.
Antonio Vitor Moraes Junior, Bruno Pereira Valdigem, Cecilia Monteiro Boya Barcelos, Celso Salgado de Melo, Wilson Lopes Pereira, Hilton Muniz Leão Filho, Marco Antônio Rocha Mello, Cyro Antônio F Fonseca Junior, Fernando Eduardo Nunes Mariz, Marcelo Rodrigues de Abreu, Patrícia Prando Cardia, Paulo Roberto Vieira de Andrade, Simone Kodlulovich Renha, Alexander dal Forno, Andre Luiz Buchele D´Avila, Ricardo Alkmin Teixeira, Veridiana Silva de Andrade   +16 more
doaj   +5 more sources

(Bio)Functionalisation of Metal–Organic Polyhedra by Using Click Chemistry

Chemistry – A European Journal, Volume 29, Issue 60, October 26, 2023., 2023
Copper(I)‐catalysed alkyne‐azide cycloaddition click chemistry is a versatile post‐synthetic tool to functionalize the surface chemistry of alkyne‐functionalized cuboctahedral Metal–Organic Polyhedra (MOPs). This methodology enables quantitative functionalization of MOPs with a wide range of functional groups, including polymers, carboxylic and ...
Laura Hernández‐López, Cornelia von Baeckmann, Jordi Martínez‐Esaín, Alba Cortés‐Martínez, Jordi Faraudo, Caterina Caules, Teodor Parella, Daniel Maspoch, Arnau Carné‐Sánchez   +8 more
wiley   +1 more source

Synthese von C60/[10]CPP‐Catenanen durch Regioselektive Nanokapsel‐Templierte Bingel Bis‐Addition

Angewandte Chemie, Volume 135, Issue 42, October 16, 2023., 2023
Die Kombination von drei Methoden (Tether, Nanohoop‐Template und supramolekulare Schattenmaske) ermöglichte die itero‐ und regioselektive Synthese von [2]Catenanen durch Bis‐Addition von Bis‐Bromomalonaten an den Komplex C60⸦[10]CPP. Die Verwendung einer „spurlosen“ Nanokapsel‐Schattenmaske war der Schlüssel für eine 87 %ige Selektivität für das „in ...
Fabian M. Steudel, Ernest Ubasart, Luigi Leanza, Míriam Pujals, Teodor Parella, Giovanni M. Pavan, Xavi Ribas, Max von Delius   +7 more
wiley   +1 more source

Synthesis of C60/[10]CPP‐Catenanes by Regioselective, Nanocapsule‐Templated Bingel Bis‐Addition

Angewandte Chemie International Edition, Volume 62, Issue 42, October 16, 2023., 2023
The combination of three approaches (tether, nanohoop template & supramolecular shadow mask) enabled the itero‐ and regioselective synthesis of [2]catenanes via bis‐addition of bis‐bromomalonates to the complex C60⸦[10]CPP. The use of a “traceless” nanocapsule shadow mask was key for obtaining 87 % selectivity for the “in,out‐trans‐3′′ product, where ...
Fabian M. Steudel, Ernest Ubasart, Luigi Leanza, Míriam Pujals, Teodor Parella, Giovanni M. Pavan, Xavi Ribas, Max von Delius   +7 more
wiley   +1 more source

A Polymeric Nanoparticle Formulation for Targeted mRNA Delivery to Fibroblasts

Advanced Science, Volume 10, Issue 5, February 14, 2023., 2023
Messenger RNA (mRNA) is a promising tool to deliver therapeutic proteins in many diseases, including fibrotic disorders. Here, a polymeric nanoparticle formulation is developed after high‐throughput screening of 152 polymers in a fibroblast model.
Artur Filipe Rodrigues, Catarina Rebelo, Susana Simões, Cristiana Paulo, Sónia Pinho, Vítor Francisco, Lino Ferreira   +6 more
wiley   +1 more source

Enrichment of hepatic glycogen and plasma glucose from H₂18O informs gluconeogenic and indirect pathway fluxes in naturally feeding mice

NMR in Biomedicine, Volume 36, Issue 2, February 2023., 2023
18O‐enrichment of liver glycogen, triglyceride glycerol, and blood glucose of mice given 18O‐water during overnight feeding was quantified by 13C NMR and MS. Glycogen 18O‐enrichment of oxygens 3, 5, and 6 from isotope‐shifted 13C signals informed indirect pathway contributions from different sources.
Margarida Coelho, Rohit Mahar, Getachew D. Belew, Alejandra Torres, Cristina Barosa, Fernando Cabral, Ivan Viegas, Amalia Gastaldelli, Vera M. Mendes, Bruno Manadas, John G. Jones, Matthew E. Merritt   +11 more
wiley   +1 more source

Unravelling the Mechanistic Pathway of the Hydrogen Evolution Reaction Driven by a Cobalt Catalyst

Angewandte Chemie, Volume 134, Issue 40, October 4, 2022., 2022
A CoI complex bearing a redox‐active κ‐N3P2 pentadentate ligand and its activity towards hydrogen evolution reaction is reported in this work. A combination of spectroscopic, electrochemical and computational techniques is employed to characterize the intermediate species, demonstrating an unusual homolytic coupling reaction pathway between two ...
Bing Jiang, Marcos Gil‐Sepulcre, Pablo Garrido‐Barros, Carolina Gimbert‐Suriñach, Jia‐Wei Wang, Jordi Garcia‐Anton, Pau Nolis, Jordi Benet‐Buchholz, Nuria Romero, Xavier Sala, Antoni Llobet   +10 more
wiley   +1 more source