Search Results - "Ramos, Joaquim"

Molecular mobility in Soluplus, a polymer with extremely low dynamic fragility; A study by thermally stimulated depolarization currents by Diogo, Hermínio P., Ramos, Joaquim J. Moura

“…•TSDC confirms the low Tg and the extremely low dynamic fragility of Soluplus®.•The relaxation map reveals the large dispersion of MW and the low dynamic…”
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Characterization of the secondary relaxations in glass-forming liquids. The contribution of the Starkweather line and of the Coupling Model to the rationalization of TSDC results by Diogo, Hermínio P., Ramos, Joaquim J. Moura

“…•The Starkweather (or zero activation entropy) line can be used to identify the secondary relaxations as studied by TSDC.•A link is established between the…”
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The slow relaxation dynamics in active pharmaceutical ingredients studied by DSC and TSDC: Voriconazole, miconazole and itraconazole by Ramos, Joaquim J. Moura, Diogo, Hermínio P.

“…[Display omitted] The slow molecular mobility of three active pharmaceutical drugs (voriconazole, miconazole and itraconazole) has been studied by differential…”
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Dielectric relaxation study of poly (ether imide) by thermally stimulated depolarization currents by Diogo, Hermínio P., Moura Ramos, Joaquim J.

“…This work presents a detailed study, by thermostimulated depolarization currents, of the molecular mobility of poly (ether imide) in a broad temperature range…”
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Data augmentation approaches using cycle-consistent adversarial networks for improving COVID-19 screening in portable chest X-ray images by Morís, Daniel Iglesias, de Moura Ramos, José Joaquim, Buján, Jorge Novo, Hortas, Marcos Ortega

“…The current COVID-19 pandemic, that has caused more than 100 million cases as well as more than two million deaths worldwide, demands the development of fast…”
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New contributions from thermal and dielectric techniques to the understanding of the dynamic properties of medium to long chain poly (propylene glycols) by Diogo, Hermínio P., Moura Ramos, Joaquim J.

“…The molecular mobility of poly (propylene glycols) with molecular weights between 2000 and 18,200 g mol−1 was studied in the amorphous solid state, in the…”
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Thermal behavior and molecular mobility studies in the supercooled liquid and glassy states of carvedilol and loratadine by Viciosa, M. Teresa, Moura Ramos, Joaquim J., Diogo, Hermínio P.

“…[Display omitted] The thermal behavior of carvedilol and loratadine was studied by differential scanning calorimetry (DSC). The glass-forming ability, as well…”
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Phase behavior and slow molecular dynamics in the glassy state and in the glass transformation of a nematic liquid crystal: 4CFPB by Moura Ramos, Joaquim J., Diogo, Hermínio P.

“…The molecular mobility in 4-cyano-3-fluorophenyl 4-butylbenzoate (4CFPB), a nematic liquid crystal, was studied by differential scanning calorimetry (DSC) and…”
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Calorimetric (DSC) and dielectric (TSDC) investigation on the thermal behavior and molecular mobility in the supercooled liquid and glassy states of bifonazole and lamotrigine by Moura Ramos, Joaquim J., Diogo, Hermínio P.

“…The thermal behavior of the two glass-forming drugs bifonazole and lamotrigine was studied by differential scanning calorimetry (DSC); we reported a bifonazole…”
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The determination of the glass transition temperature by thermally stimulated depolarization currents. Comparison with the performance of other techniques by Ramos, Joaquim J. Moura, Diogo, Hermínio P.

“…Several experimental techniques are currently used for the determination of the glass transition temperature, T g . Thermally stimulated depolarization…”
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The UN’s 2030 Agenda for sustainable development and the maritime transport domain: the role and challenges of IMO and its stakeholders through a grounded theory perspective by Sciberras, Lawrence, Silva, Joaquim Ramos

“…In September 2015, the United Nations (UN) officially adopted the 2030 Agenda for Sustainable Development together with 17 sustainable development goals (SDGs)…”
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The slow molecular mobility in the amorphous solid and supercooled liquid phases of brucine, an anti-cancer drug. A study by differential scanning calorimetry (DSC), thermostimulated currents (TSC) and dielectric relaxation spectroscopy (DRS) by Diogo, Hermínio P., Moura Ramos, Joaquim J., Teresa Viciosa, M.

“…[Display omitted] •Secondary and principal relaxation modes present in the amorphous brucine were studied by TSDC and DRS.•A Johari-Goldstein relaxation was…”
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The Slow Relaxation Dynamics in the Amorphous Pharmaceutical Drugs Cimetidine, Nizatidine, and Famotidine by Viciosa, M Teresa, Moura Ramos, Joaquim J, Diogo, Hermínio P

“…The slow molecular mobility in the amorphous solid state of 3 active pharmaceutical drugs (cimetidine, nizatidine, and famotidine) has been studied using…”
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Structure, thermal properties and molecular mobility in cholesteryl hydrogen phthalate: Different approaches to the crystal, the glassy crystal and the mesophase by Diogo, Hermínio P., Piedade, M.  Fátima  M., Ramos, Joaquim J. Moura

“…•Cold crystallization of CHP gives rise to different polymorphic forms.•The structure of more stable polymorph was determined by X-ray diffraction.•Molecular…”
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Dipolar Reorientations in Amorphous Nimesulide: A TSDC and DSC Study by Moura Ramos, Joaquim J, Diogo, Hermínio P

“…The preparation of APIs in the amorphous solid form can be a means of circumventing problems arising from poor solubility and low dissolution rate of the…”
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Thermal behavior and dynamic fragility in amorphous carisoprodol. Correlation between the dynamic and thermodynamic fragilities by Diogo, Hermínio P., Ramos, Joaquim J. Moura, Piedade, M. Fátima M.

“…[Display omitted] •A polymorph of carisoprodol was first discovered and characterized by DSC and XRPD.•The molecular mobility in amorphous carisoprodol was…”
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The slow molecular dynamics in amorphous probucol by Mora, Elsa, Diogo, Hermínio P., Ramos, Joaquim J. Moura

“…[Display omitted] •The slow mobility in an amorphous pharmaceutical ingredient is characterized.•The fast secondary, the Johari–Goldstein and the main…”
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Differential scanning calorimetry and thermally stimulated depolarization currents study on the molecular dynamics in amorphous fenofibrate by Diogo, Hermínio P., Viciosa, Maria Teresa, Ramos, Joaquim J. Moura

“…•The slow mobility in amorphous fenofibrate is characterized by DSC and TSDC.•The kinetic features of the different motional modes are determined.•From TSDC…”
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Thermal behavior and molecular mobility in the glassy state of three anti-hypertensive pharmaceutical ingredients by Moura Ramos, Joaquim J, Diogo, Hermínio P

“…The slow molecular mobility in the amorphous solid state of three active pharmaceutical drugs (valsartan, telmisartan and irbesartan) has been studied using…”
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Orientational glass, orientationally disordered crystal and crystalline polymorphism: A further study on the thermal behavior and molecular mobility in levoglucosan by Moura Ramos, Joaquim J., Diogo, Hermínio P.

“…Levoglucosan has very particular features in its phase diagram. On the one hand it has two crystalline phases, one orientationally ordered (ORC), stable at…”
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