3,418 research outputs found
CCDC 1854188: Experimental Crystal Structure Determination
No full textRelated Article: Stéphane Le Gac, Victoria Ndoyom, Luca Fusaro, Vincent Dorcet, Bernard Boitrel|2019|Chem.-Eur.J.|25|845|doi:10.1002/chem.20180471
CCDC 1844978: Experimental Crystal Structure Determination
No full textRelated Article: Luca Leoni, Andrea Carletta, Luca Fusaro, Jean Dubois, Nikolay A. Tumanov, Carmela Aprile, Johan Wouters, Antonella Dalla Cort|2019|Molecules|24|2314|doi:10.3390/molecules2412231
CCDC 1844981: Experimental Crystal Structure Determination
No full textRelated Article: Luca Leoni, Andrea Carletta, Luca Fusaro, Jean Dubois, Nikolay A. Tumanov, Carmela Aprile, Johan Wouters, Antonella Dalla Cort|2019|Molecules|24|2314|doi:10.3390/molecules2412231
CCDC 1844979: Experimental Crystal Structure Determination
No full textRelated Article: Luca Leoni, Andrea Carletta, Luca Fusaro, Jean Dubois, Nikolay A. Tumanov, Carmela Aprile, Johan Wouters, Antonella Dalla Cort|2019|Molecules|24|2314|doi:10.3390/molecules2412231
CCDC 1844980: Experimental Crystal Structure Determination
No full textRelated Article: Luca Leoni, Andrea Carletta, Luca Fusaro, Jean Dubois, Nikolay A. Tumanov, Carmela Aprile, Johan Wouters, Antonella Dalla Cort|2019|Molecules|24|2314|doi:10.3390/molecules2412231
An assessment of the impact of possible CAP reform scenarios on Romanian agriculture
Full text linkUsing a simplified model, with key-variable the prices of two different possible scenarios of CAP reform after 2013 (moderate and radical), this paper present a comparison between the price effects of implementation of each reform scenario at 2015 horizon on Romanian agriculture. This short analysis shows that, under the presented hypotheses, the net welfare effect, due to the price changes, for the selected products, is positive in both reform scenarios, yet greater in the case of the radical reform. Integrated in the large context of Romanian development, it seems that the influence of CAP reform upon agriculture and rural areas will be most likely a gradual one: an interpenetration between the two scenarios is foreseeable, starting with the moderate reform that will dominate the period around 2013, the reform measures acquiring a more radical character afterwards.CAP reform, Romania, welfare effects, Agricultural and Food Policy,
Insights into the self-assembly of fampridine hydrochloride:how the choice of the solvent affects the crystallization of a simple salt
Full text linkCrystalline materials and crystallization processes play an important role in several fields of science, such as pharmaceuticals, material science, pigments, optoelectronics, catalysis and energy storage. Under- standing and defining the right conditions of crystallization is therefore crucial. Among the several factors influencing the crystallization of a given compound, the choice of the solvent system is perhaps one of the most important. The nature of solvent–solute interactions can indeed have a role in promoting specific molecular assemblies, therefore affecting crystallisation rates of a crystal and often resulting in the nucleation of different polymorphs and solvates. Here we investigated the role of a binary mixture of solvent (water/acetone) in the crystallisation of a simple salt of 4-aminopyridinium chloride. Previous results on this compound showed that when crystallised from water it forms a simple hydrate structure, while in the presence of acetone, it undergoes a liquid-liquid phase separation, followed by the crystallisation of a complex structure belonging to the Frank–Kasper (FK) phases, a particular family of topologically close-packed structures never observed in small and rigid molecules. To broaden the understanding of how such a simple molecule may crystallise as an FK phase, we carried out the crystallization of the complex phase by antisolvent diffusion (in a mixture of water/acetone) and that of the monohydrate phase in water, monitoring the liquid precursors by liquid-state NMR. In particular, we applied 1H, 13C, 14N, 17O, and 35/37Cl NMR as a function of the concentration of 4APH+Cl− until the moment when precipitation of the crystalline phases occurred. Variations of chemical shifts, T1 relaxation times of 13C signals, and full-width at half-maximum of the signals of quadrupolar nuclei were also measured. The spatial proximity between the different species in the solution was investigated by NOE experiments. In order to support these results, we also performed Molecular Dynamics simulations, investigating the potential solute/solvents in- teractions. The results strongly suggest that acetone, instead of behaving as an anti-solvent, interacts directly with the solute, preventing the formation of the simple monohydrate structure and, at the same time, promoting specific molecular aggregations
Application of the International Standards for noise insulation assessment of a metamaterial-based ventilated window
No full textrecent years, acoustic metamaterials (AMMs) have been developed to create more ergonomic designs that can be integrated into the built environment. For instance, embedding metamaterials in windows has facilitated effective ventilation and sound insulation. Presently, European standards provide specific guidelines for evaluating the insulation properties of façades, enabling the characterisation of both active and passive noise management solutions to ensure a healthy indoor environment. However, these standards primarily focus on closed partitions, limiting their applicability to noise management open systems. This study employs the ISO 10140 measurement method to assess a vertical metamaterial-based partition, namely an acoustic metawindow (AMW) unit, that, when open, allows noise insulation and ventilation contemporarily. The standardised level difference (Dn,e) is used to assess the performance of the open AMW unit's noise insulation. The results demonstrate the applicability of ISO 10140 for assessing an open AMW unit's performance, showcasing a Dn,e,w = 27 dB in the frequency range 1000-5000 Hz and an improvement over an open standard window ranging from 3 to 15 dB. This initial exploration could pave the way for more inclusive regulations considering ventilated sound-insulating devices as vertical partitions in the built environment and more comprehensive assessment methods for AMMs-based ventilated systems
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