نتایج جستجو برای: three nuclearity clusters

تعداد نتایج: 1376304  

2016
Xiaoping Yang Shiqing Wang Tyler L. King Christopher J. Kerr Clement Blanchet Dmitri Svergun Robert Pal Andrew Beeby Jamuna Vadivelu Katherine A. Brown Richard A. Jones Lijie Zhang Shaoming Huang

We have developed a new class of lanthanide nano-clusters that self-assemble using flexible Schiff base ligands. Cd-Ln and Ni-Ln clusters, [Ln8Cd24(L1)12(OAc)39Cl7(OH)2] (Ln = Nd, Eu), [Eu8Cd24(L1)12(OAc)44], [Ln8Cd24(L2)12(OAc)44] (Ln = Nd, Yb, Sm) and [Nd2Ni4(L3)2(acac)6(NO3)2(OH)2], were constructed using different types of flexible Schiff base ligands. These molecular nano-clusters exhibit ...

Journal: :European Journal of Inorganic Chemistry 2021

The Cover Feature shows the Ag⋅⋅⋅Ag interactions in various small phosphine silver(I) thiolate clusters. argentophilic contacts can be either attractive or repulsive as a function of electronic and geometric environment silver centers, which is turn modulated by ligand effects. real space electron density (QTAIM NCI-index) energy decomposition (IQA) analyses deliver insights into these Our inve...

2008
Mark R. Opmeer

Nuclearity of the Hankel operator is a known sufficient condition for convergence of Lyapunov-balanced truncations. We show how a previous result on nuclearity of Hankel operators of systems with an analytic semigroup can be extended to systems with a semigroup of class D with p ≥ 1 (the case p = 1 being the analytic case). For semigroups that are generated by a Dunford-Schwartz spectral operat...

Journal: :Systems & Control Letters 2008
Mark R. Opmeer

Nuclearity of the Hankel operator is a known sufficient condition for convergence of Lyapunov-balanced truncations. We show how a previous result on nuclearity of Hankel operators of systems with an analytic semigroup can be extended to systems with a semigroup of class D with p ≥ 1 (the case p = 1 being the analytic case). For semigroups that are generated by a Dunford-Schwartz spectral operat...

Journal: :Axioms 2016
Gandalf Lechner Ko Sanders

A quantum field theory in its algebraic description may admit many irregular states. So far, selection criteria to distinguish physically reasonable states have been restricted to free fields (Hadamard condition) or to flat spacetimes (e.g., Buchholz-Wichmann nuclearity). We propose instead to use a modular `p-condition, which is an extension of a strengthened modular nuclearity condition to ge...

1998
CHRISTIAN D. JÄKEL

We review the heuristic arguments suggesting that any thermal quantum field theory, which can be interpreted as a quantum statistical mechanics of (interacting) relativistic particles, obeys certain restrictions on its number of local degrees of freedom. As in the vacuum representation, these restrictions can be expressed by a ‘nuclearity condition’. If a model satisfies this nuclearity conditi...

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