Ara es mostren els items 21-40 de 155

    • Colossal barocaloric effects near room temperature in plastic crystals of neopentylglycol 

      Lloveras Muntané, Pol Marcel; Aznar Luque, Araceli; Barrio Casado, María del; Negrier, Philippe; Popescu, C.; Planes Vila, Antoni; Mañosa Carrera, Lluis; Stern Taulats, Enric; Avramenko, Alex; Mathur, N.D.; Moya Raposo, Xavier; Tamarit Mur, José Luis (2019-04-18)
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      Accés obert
      There is currently great interest in replacing the harmful volatile hydrofluorocarbon fluids used in refrigeration and air-conditioning with solid materials that display magnetocaloric, electrocaloric or mechanocaloric ...
    • Colossal reversible barocaloric effects in layered hybrid perovskite (C10H21NH3)2MnCl4 under low pressure near room temperature 

      Li, Junning; Barrio Casado, María del; Dunstan, David; Dixey, Richard; Lou, Xiaojie; Tamarit Mur, José Luis; Phillips, Anthony E.; Lloveras Muntané, Pol Marcel (2021-11-10)
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      Accés obert
      Barocaloric effects in a layered hybrid organic–inorganic compound, (C10H21NH3)2MnCl4, that are reversible and colossal under pressure changes below 0.1 GPa are reported. This barocaloric performance originates in a phase ...
    • Comparative physical study of three pharmaceutically active benzodiazepine derivatives: crystalline versus amorphous state and crystallization tendency 

      Valenti, Sofia; Barrio Casado, María del; Negrier, Philippe; Romanini, Michela; Macovez, Roberto; Tamarit Mur, José Luis (American Chemical Society, 2021-01-01)
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      Accés obert
      Chemical derivatization and amorphization are two possible strategies to improve the solubility and bioavailability of drugs, which is a key issue for the pharmaceutical industry. In this contribution, we explore whether ...
    • Conformational polymorphism: The missing phase of 1,1,2,2-tetrachloroethane (Cl2HC-CHCl2) 

      Barrio Casado, María del; Tamarit Mur, José Luis; Mondieig, Denise; Zuriaga, Jose Mariano; Perez, Silvina C.; Negrier, Philippe (2013-05)
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      Accés restringit per política de l'editorial
      Halogenoethane derivatives are known to exhibit different polymorphs involving a different translational, orientational, and conformational order. The 1,1,2,2- tetrachloroethane (Cl2HC−CHCl2) exhibits a normal pressure ...
    • Crystal structure and solid-state properties of 3,4-diaminopyridine dihydrogen phosphate and their comparison with other diaminopyridine salts 

      Mahe, N.; Nicolaï, B.; Allouchi, Hassan; Barrio Casado, María del; Do, Bernat; Céolin, René; Tamarit Mur, José Luis; Rietveld, Ivo B. (2013-02)
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      Accés restringit per política de l'editorial
      3,4-Diaminopyridine is an active pharmaceutical ingredient for the treatment of Lambert−Eaton myasthenic syndrome (LEMS). It is 3,4-diaminopyridine dihydrogen phosphate that has become the active ingredient of choice. As ...
    • Crystal structure and solid-state studies of aged samples of tienoxolol, an API designed against hypertension 

      Teulon, Jean-Marie; Mahé, Nathalie; Do, Bernard; Nicolaï, Béatrice; Rietveld, Ivo B.; Barrio Casado, María del; Tamarit Mur, José Luis; Céolin, René; Ghéchot, Christophe (2012)
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      Accés restringit per política de l'editorial
      Aging of drug molecules is generally studied following regulatory procedures, i.e. under forced conditions and for relatively limited storage time; therefore naturally aged samples are rare and provide scientific reference ...
    • Crystal structure of polymorph II and the pressure-temperature phase diagram of the dimorphic anesthetic butamben 

      Rietveld, Ivo B.; Barrio Casado, María del; Céolin, René; Tamarit Mur, José Luis (American Chemical Society, 2021-11-18)
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      Accés obert
      The crystal structure of the low-temperature form II of butamben has been solved in a P21/c space group very similar to that of form I. Form II possesses virtually the same packing as that of the high-temperature form I, ...
    • Crystal structures and phase relationships of 2 polymorphs of 1,4-Diazabicyclo[3.2.2]nonane-4-Carboxylic Acid 4-Bromophenyl Ester Fumarate, A selective a-7 nicotinic receptor partial agonist 

      Robert, Benoit; Perrin, Marc-Antoine; Barrio Casado, María del; Tamarit Mur, José Luis; Coquerel, Gerard; Céolin, René; Rietveld, Ivo B. (2016-01)
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      Accés obert
      Two polymorphs of the 1:1 fumarate salt of 1,4-diazabicyclo[3.2.2]nonane-4-carboxylic acid 4-bromophenyl ester, developed for the treatment of cognitive symptoms of schizophrenia and Alzheimer disease, have been characterized. ...
    • Crystalline tetrazepam as a case study on the volume change on melting of molecular organic compounds 

      Rietveld, Ivo B.; Negrier, Philippe; Barrio Casado, María del; Allouchi, Hassan; Céolin, René; Tamarit Mur, José Luis (2021-01-25)
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      Accés obert
      The volume change on melting is a rarely studied quantity and it is not well understood even if it must reflect the changes in interaction between the solid and the liquid state. It is part of the solid-state information ...
    • Curs 0: preparació per als estudis a l’EEBE 

      Tornil Sin, Sebastián; Botey Cumella, Muriel; Alarcón Jordán, Marta; Alcaraz Sendra, Olga; Ametller Congost, Lluís; Bruna Escuer, Pere; Camps Anaya, Germinal; Carmona Mejías, Ángeles; Claverol Aguas, Mercè; Crespo Artiaga, Daniel; Pablo Ribas, Joan de; Barrio Casado, María del; Valle Mendoza, Luis Javier del; Encinas Bachiller, Andrés Marcos; Farran Marsà, Adriana; Florido Pérez, Antonio; Gámez López, Antonio; García Senz, Domingo; Gibert Agulló, Oriol; Ikhouane, Fayçal; Jiménez Jiménez, María José; José Pont, Jordi; Linares Alegret, Manuel; Lloveras Muntané, Pol Marcel; López López, José; Macovez, Roberto; Mas Blesa, Albert; Mitjana Riera, Margarida; Muñoz Romero, José; Pardo Soto, Luis Carlos; Periago Oliver, M. Cristina; Pineda Soler, Eloi; Pradell Cara, Trinitat; Ruiz Ordóñez, Magda; Sala Cladellas, Glòria; Soler Turu, Lluís; Tamarit Mur, José Luis; Vendrell Villafruela, Xavier; Zanuy Gomara, David (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2022-05)
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      Aquest article presenta el desenvolupament i primers resultats d'ús d'un conjunt de cursos virtuals que pretenen proporcionar uns coneixements inicials bàsics de Matemàtiques, Física i !ímica als estudiants que accedeixen ...
    • Dielectric spectroscopy studies of conformational relaxation dynamics in molecular glass-forming liquids 

      Romanini, Michela; Macovez, Roberto; Valenti, Sofia; Noor, Wahi; Tamarit Mur, José Luis (Multidisciplinary Digital Publishing Institute (MDPI), 2023-12-06)
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      Accés obert
      We review experimental results obtained with broadband dielectric spectroscopy concerning the relaxation times and activation energies of intramolecular conformational relaxation processes in small-molecule glass-formers. ...
    • Disentangling a and ß relaxation in orientationally disordered crystals with theory and experiments 

      Cui, Bingyu; Gebbia, Jonathan Fernando; Tamarit Mur, José Luis; Zaccone, Asessio (American Institute of Physics (AIP), 2018-05-21)
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      Accés obert
      We use a microscopically motivated Generalized Langevin Equation (GLE) approach to link the vibrational density of states (VDOS) to the dielectric response of orientational glasses (OGs). The dielectric function calculated ...
    • Disentangling the secondary relaxations in the orientationally disordered mixed crystals: cycloheptanol + cyclooctanol two-component system 

      Martínez García, Julio Cesar; Tamarit Mur, José Luis; Pardo Soto, Luis Carlos; Barrio Casado, María del; Rzosca, S. J.; Drozd Rzosca, A. (2010-04-20)
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      Accés restringit per política de l'editorial
      The dynamics of the pure compounds and mixed crystals formed between cycloheptanol (cC7-ol) and cyclooctanol (cC8-ol) has been studied by means of broadband dielectric spectroscopy at temperatures near and above the ...
    • Disorder effects on heat transport properties of orientationally disordered crystals 

      Bermejo, F.J.; Sharapova, I.V.; Krivchikov, A.I.; Korolyuk, O.A.; Jezowski, A.; Rovira Esteva, Muriel; Tamarit Mur, José Luis; Pardo Soto, Luis Carlos; Ruíz Martín, María Dolores (2010-03-30)
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      Accés restringit per política de l'editorial
    • Does the trihydrate of atorvastatin calcium possess a melting point? 

      Barrio Casado, María del; Clevers, Simon; Dupray, Valérie; Coquerel, Gerard; Tamarit Mur, José Luis; Rietveld, Ivo B. (2020-05-30)
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      To decide whether an active pharmaceutical ingredient can be used in its amorphous form in drug formulations, often the glass transition is studied in relation to the melting point of the pharmaceutical. If the glass ...
    • Double primary relaxation in a highly anisotropic orientational glass-former with low-dimensional disorder 

      Romanini, Michela; Barrio Casado, María del; Capaccioli, Simon; Ruíz Martín, María Dolores; Macovez, Roberto; Tamarit Mur, José Luis (2016-04-26)
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      Accés obert
      The freezing of the cooperative reorientational motions in orientationally disordered (OD) molecular crystals marks the so-called \glassy" transition, which may be considered a lower-dimensional version of the structural ...
    • Drug-biopolymer dispersions: morphology-and temperature-dependent (anti)plasticizer effect of the drug and component-specific Johari–Goldstein relaxations 

      Valenti, Sofia; Valle Mendoza, Luis Javier del; Romanini, Michela; Mitjana Rusiñol, Meritxell; Puiggalí Bellalta, Jordi; Tamarit Mur, José Luis; Macovez, Roberto (2022-03-01)
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      Amorphous molecule-macromolecule mixtures are ubiquitous in polymer technology and are one of the most studied routes for the development of amorphous drug formulations. For these applications it is crucial to understand ...
    • Dynamic characterization of crystalline and glass phases of deuterated 1,1,2,2 tetrachloroethane 

      Perez, Silvina C.; Zuriaga, Jose Mariano; Serra, Pablo; Wolfenson, Alberto; Negrier, Philippe; Tamarit Mur, José Luis (2015-10-07)
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      A thorough characterization of the gamma, beta, and glass phases of deuterated 1,1,2,2 tetrachloroethane (C2D2Cl4) via nuclear quadrupole resonance and Molecular Dynamic Simulations (MDSs) is reported. The presence of ...
    • Dynamic heterogeneity in an orientational glass 

      Caballero, Nirvana B.; Zuriaga, Jose Mariano; Tamarit Mur, José Luis; Serra, Pablo (2017-11-14)
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      The family of compounds CBrnCl4-n has been proven helpful in unraveling microscopic mechanisms responsible for glassy behavior. Some of the family members show translational ordered phases with minimal disorder which appears ...
    • Dynamics and local ordering of pentachloronitrobenzene: a molecular-dynamics investigation 

      Gebbia, Jonathan Fernando; Henao Aristizabal, Andrés; Negrier, Philippe; Aguilà Aviles, David; Tamarit Mur, José Luis; Pardo Soto, Luis Carlos (Royal Society of Chemistry (RSC), 2023-11-06)
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      Accés obert
      Plastic phases are constituted by molecules whose centers of mass form a long range ordered crystalline lattice, but rotate in a more or less constrained way. Pentachloronitrobenzene (PCNB) is a quasi-planar hexa-substituted ...