Results 81 to 90 of about 12,282,130 (266)
Energy Transfer Catalysis Enabled 2,2,2‐Trifluoroethoxy‐Amination of Olefins
ChemistryEurope, EarlyView.A thioxanthone‐catalyzed 2,2,2‐trifluoroethoxyamination of olefins is developed using unprecedented, easily prepared, and bench‐stable oxime ethers via the generation of alkoxy and iminyl radicals. The controlled intermolecular addition of the alkoxy radical to an olefin, over possible competing side processes, is critical.
Floriane Doche +3 more
wiley +1 more source
Privileged Coordinates and Nilpotent Approximation of Carnot Manifolds, I. General Results
, 2018 In this paper we attempt to give a systematic account on privileged coordinates and the nilpotent approximation of Carnot manifolds. By a Carnot manifold it is meant a manifold with a distinguished filtration of subbundles of the tangent bundle which is ...
Choi, Woocheol, Ponge, Raphael
core +1 more source
Tri‐reforming of Methane over a Hydroxyapatite‐Supported Nickel Catalyst Prepared by Cation Exchange
ChemPlusChem, EarlyView.A hydroxyapatite‐supported nickel catalyst containing 1 wt% nickel loading is successfully prepared by ion exchange, showing excellent catalytic performance in the trireforming of methane reaction at 800 °C and 1.4 bar. Catalytic steam reforming of methane is a major process to produce synthetic gas (syngas), deployed at a large industrial scale ...
Xuan‐Huynh Pham +2 more
wiley +1 more source
W2,p a priori estimates for nonvariational operators: the sharp maximal function technique
Bruno Pini Mathematical Analysis Seminar, 2018 We consider a nonvariational degenerate elliptic operator, structured on a system of left invariant, 1-homogeneous, Hörmander vector fields on a Carnot group, where the coefficient matrix is symmetric, uniformly positive on a bounded domain and the ...
Marco Bramanti
doaj +1 more source
Rankine Carnot Batteries with the Integration of Thermal Energy Sources: A Review
Energies, 2020 This paper provides an overview of a novel electric energy storage technology. The Thermally Integrated Pumped Thermal Electricity Storage (TI-PTES) stores electric energy as thermal exergy.
Guido Francesco Frate +2 more
doaj +1 more source
On the lack of semiconcavity of the subRiemannian distance in a class of Carnot groups
, 2016 We show by explicit estimates that the SubRiemannian distance in a Carnot group of step two is locally semiconcave away from the diagonal if and only if the group does not contain abnormal minimizing curves.
Montanari, Annamaria +1 more
core +1 more source
Lipschitz and bilipschitz maps on Carnot groups [PDF]
Pacific Journal of Mathematics, 2013 Suppose A is an open subset of a Carnot group G, where G has a discrete analogue, and H is another Carnot group. We show that a Lipschitz function from A to H whose image has positive Hausdorff measure in the appropriate dimension is biLipschitz on a subset of A of positive Hausdorff measure.
openaire +3 more sources
On Rectifiable Measures in Carnot Groups: Existence of Density
The Journal of Geometric Analysis, 2022 AbstractIn this paper, we start a detailed study of a new notion of rectifiability in Carnot groups: we say that a Radon measure is$${\mathscr {P}}_h$$Ph-rectifiable, for$$h\in {\mathbb {N}}$$h∈N, if it has positiveh-lower density and finiteh-upper density almost everywhere, and, at almost every point, it admits a unique tangent measure up to multiples.
Gioacchino Antonelli, Andrea Merlo
openaire +4 more sources
ChemPhotoChem, EarlyView.The photophysical, electroluminescence, and amplified spontaneous emission properties of two solution‐processable fluorescent diketopyrrolopyrrole derivatives are examined in details. The results demonstrate that this type of organic near‐infrared light‐emitting materials are extremely promising for organic light‐emitting diodes and organic ...
Anthony D’ Aléo +10 more
wiley +1 more source
Algebraic prolongation and rigidity of Carnot groups
Monatshefte für Mathematik, 2009 We discuss the known results on rigidity of Carnot groups using Tanaka’s prolongation theory. We also apply Tanaka’s theory to study rigidity of an extended class of H-type groups which we call J-type groups. In particular we obtain a rigidity criterion giving rise to a rigid class of J-type groups which includes the H-type groups, and thus extends the
Ottazzi, Alessandro, Warhurst, Ben
openaire +3 more sources