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排序方式: 共有84条查询结果,搜索用时 15 毫秒
81.
Florian Tieves Fabio Tonin Elena Fernández-Fueyo John M. Robbins Bettina Bommarius Andreas S. Bommarius Miguel Alcalde Frank Hollmann 《Tetrahedron》2019,75(10):1311-1314
The E-factor has become an important measure for the environmental impact of (bio)chemical reactions. However, summing up the obvious wastes generated in the laboratory neglects energy-related wastes (mostly greenhouse gases) which are generated elsewhere. To estimate these wastes, we propose to extend the E-factor by an energy-term (E+-factor). At the example of a lab-scale enzyme fermentation, we demonstrate that the E+-factor can constitute a multiple of the classical E-factor and therefore must not be neglected striving for a holistic estimation of the environmental impact. 相似文献
82.
It is hinted that anomalies are not really anomalous since (at least in characteristic examples) they can be related to a lack of common analytic vectors for the Hamiltonian and the observables. We reanalyze the notions of analytic vectors and of local representations of Lie algebras in this light, and show how the notion of preferred observables introduced in the deformation (star product) approach to quantization may help give an anomaly-free formulation to physical problems. Finally, some remarks are made concerning the applicability of these considerations to field theory, especially in two dimensions. 相似文献
83.
Alcalde E Dinarès I Ibáñez A Mesquida N 《Chemical communications (Cambridge, England)》2011,47(11):3266-3268
Further studies on the application of an AER (A(-) form) method broadened the anion exchange scope of representative ionic liquids and bis(imidazolium) systems. Depending on the hydrophobicity nature of the targeted imidazolium species and counteranions, different organic solvents were used to swap halides for assorted anions, proceeding in excellent to quantitative yields. 相似文献
84.
Dr. Xiaomin Xu Dr. Jacob M. A. van Hengst Yejia Mao Mireia Martinez Sergi Roda Dr. Martin Floor Prof. Victor Guallar Dr. Caroline E. Paul Prof. Dr. Miguel Alcalde Prof. Dr. Frank Hollmann 《Angewandte Chemie (International ed. in English)》2023,62(24):e202302844
A peroxygenase-catalysed hydroxylation of organosilanes is reported. The recombinant peroxygenase from Agrocybe aegerita (AaeUPO) enabled efficient conversion of a broad range of silane starting materials in attractive productivities (up to 300 mM h−1), catalyst performance (up to 84 s−1 and more than 120 000 catalytic turnovers). Molecular modelling of the enzyme-substrate interaction puts a basis for the mechanistic understanding of AaeUPO selectivity. 相似文献