Results 81 to 90 of about 246,131 (378)
De novo active sites for resurrected Precambrian enzymes
Nature Communications, 2017 The emergence of novel catalytic functions in ancient proteins likely played a role in the evolution of modern enzymes. Here, the authors use protein sequences from Precambrian beta-lactamases and demonstrate that a single hydrophobic-to-ionizable amino ...
Valeria A. Risso +11 more
doaj +1 more source
Crystal structure of 3-benzamido-1-(4-nitrobenzyl)quinolinium trifluoromethanesulfonate
Acta Crystallographica Section E: Crystallographic Communications, 2016 In the title compound, C23H18N3O3+·CF3SO3−, the asymmetric unit contains two crystallographically independent organic cations with similar conformations.
Mariana Nicolas-Gomez +4 more
doaj +1 more source
EVASÃO E RETENÇÃO ESCOLAR NO CURSO DE LICENCIATURA EM QUÍMICA DO INSTITUTO DE QUÍMICA DA UFRGS
, 2016 In recent years the discussion on educational issues in the country have emphasized teacher training courses as a major factor that can positively impact on changes in education. It is known however, that in a course like chemistry, hardly undergraduates
André Cristo Daitx +2 more
semanticscholar +1 more source
Advanced Materials, EarlyView.The new Cu‐containing MOF (Me2NH2)(CuICl2)@[Cu4(INA)4Cl2O]·1.5dmf (3) contains a cation and an anion as guests and shows UV‐near‐mid‐IR absorption and near‐IR emission. MOF 3 shows gas‐solid reactivity in the presence of NH3 and HCOOH to yield two new 3D MOF.
Rajat Saha +10 more
wiley +1 more source
BIO Web of Conferences, 2019 Flavour and some compounds associated with wine colour are known to be yeast strain-dependent. These metabolites are important for the sensory quality of wines, studies searching for increase aroma and color are a key area today in winemaking. The aim of
Martin V. +6 more
doaj +1 more source
Adsorption of Phenols from Different Solvents on Graphene: Semi-Empirical Quantum Mechanical Calculations [PDF]
, 2013 The adsorption of phenol from aqueous solutions on carbon surfaces is discussed from different theoretical points of view, such as Monte–Carlo simulations, semi-empirical calculations, density functional theory and molecular dynamics.
Albesa, Alberto Gustavo +3 more
core +3 more sources
DIVERTINDO-SE COM A QUÍMICA: O ENSINO E A APRENDIZAGEM POR MEIO DO LÚDICO
, 2016 Resumo: O conhecimento quimico e essencial para o desenvolvimento social e cultural de um povo. O conhecimento quimico proporcionou/proporciona ao homem desenvolver novos materiais, sintetizar novos medicamentos, desenvolver tecnologias para o tratamento
K. D. C. Leite
semanticscholar +1 more source
COFs on MOFs: Layer‐by‐Layer Synthesis of MOF@COF Nanoparticles with Synergistic Adsorption
Advanced Materials, EarlyView.A layer‐by‐layer strategy enables the growth of crystalline covalent organic framework (COF) shells on metal–organic framework nanoparticles, creating core–shell structures with tunable porosity. Ordered interstitial mesopores are formed during shell growth, which are connected with the COF's intrinsic micropores, thereby enhancing water sorption. This
Ana Guillem‐Navajas +11 more
wiley +1 more source
Templated mesoporous materials: expectations, facts and challenges [PDF]
, 2010 This presentation included an overview of the main types of the mesoporous structures that can be generated via template processes, addressing the role of surface chemistry on their formation and implications in their properties and applications.
Ribeiro Carrott, M.M.L.
core