منابع مشابه
Re-conceptualizing stress: Shifting views on the consequences of stress and its effects on stress reactivity
BACKGROUND The consequences of stress are typically regarded from a deficit-oriented approach, conceptualizing stress to be entirely negative in its outcomes. This approach is unbalanced, and may further hinder individuals from engaging in adaptive coping. In the current study, we explored whether negative views and beliefs regarding stress interacted with a stress framing manipulation (positiv...
متن کاملProline zwitterion dynamics in solution, glass, and crystalline state.
Raman and Raman optical activity spectra of L- and D-proline zwitterionic (PROZW) forms were recorded for H(2)O and D(2)O solutions in a wide frequency range and analyzed with respect to the motion of the proline ring and rotation of the carbonyl group. The solution spectra were additionally compared to Raman scattering of glass and crystalline powder proline. Solution and glass spectral band b...
متن کاملAn excess electron binding to the ‘purple’ zwitterion quinonoid
Zwitterionic and canonical isomers of a novel quinonoid species were studied using second-order Møller–Plesset perturbation theory with 6-31+G**+5(sp)4d basis sets. An experimental report on the zwitterion being the most stable isomer was confirmed. In particular, the zwitterionic isomer is lower than the lowest canonical tautomer by 1.42 kcal/ mol. Binding an electron to all isomers studied wa...
متن کاملOne water molecule stabilizes the cationized arginine zwitterion.
Singly hydrated clusters of lithiated arginine, sodiated arginine, and lithiated arginine methyl ester are investigated using infrared action spectroscopy and computational chemistry. Whereas unsolvated lithiated arginine is nonzwitterionic, these results provide compelling evidence that attachment of a single water molecule to this ion makes the zwitterionic form of arginine, in which the side...
متن کاملCompact zwitterion-coated iron oxide nanoparticles for biological applications.
The potential of superparamagnetic iron oxide nanoparticles (SPIONs) in various biomedical applications, including magnetic resonance imaging (MRI), sensing, and drug delivery, requires that their surface be derivatized to be hydrophilic and biocompatible. We report here the design and synthesis of a compact and water-soluble zwitterionic dopamine sulfonate (ZDS) ligand with strong binding affi...
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ژورنال
عنوان ژورنال: Science
سال: 2018
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.359.6372.173-g