Results 31 to 40 of about 738 (133)
Photocatalytic Vanadium‐Mediated Amination of Benzene With Hydroxylamine
Chemistry – A European Journal, EarlyView.Photochemical activation of N‐phenylphenothiazine (PPT) enables a selective direct benzene amination with hydroxylamine in the presence of various vanadium catalysts under mild reaction conditions. Spectroscopic and kinetic analyses identify a key vanadium(IV)‐hydroxylamine intermediate, elucidate the crucial roles of the acidic medium, the ...
Dana Králová +6 more
wiley +1 more source
Computational study of the energy gap of benzenoid hydrocarbons through topological descriptors [PDF]
, 2023 LAUREA MAGISTRALELa comprensione del legame tra le caratteristiche topologiche e le proprietà elettroniche dei materiali è di primaria importanza. In questa Tesi, l’analisi è focalizzata sul gap HOMO-LUMO di idrocarburi benzenoidi aromatici, che sono ...
D'Ausilio, Noemi Carol
core
Science Education, Volume 110, Issue 3, Page 928-946, May 2026.ABSTRACT Students' diverse levels of knowledge and competence—shaped by individual interests and educational debts, including structural, systemic, and institutional barriers—create substantial cognitive heterogeneity in instructional settings. Adequately addressing this heterogeneity is challenging.
Paul P. Martin +4 more
wiley +1 more source
, 2006 (korte beschrijving in Nederlands, ook bedoeld voor niet chemici) pi-Logica: Logica geinspireerd op de topologie van geconjugeerde moleculen Momenteel vragen veel wetenschappers zich af of individuele moleculen gebruikt kunnen worden als bouwsteentjes ...
Veen, Maria Helena van der
core +2 more sources
, 2023 Determination of topological invariants of graphene flakes, nanotubes, and fullerenes constitutes a challenging task due to its time-intensive nature and exponential scaling.
Chou, Chien-Pin +2 more
core
Advanced Science, Volume 13, Issue 21, 13 April 2026.Polycarbonate nanogels enable lipid‐free delivery of anti‐MFAP‐5 siRNA into cancer‐associated fibroblasts (CAF) in hepatocellular carcinoma. In a cirrhotic murine model, this approach silences MFAP‐5, reduces fibroblast activation, and suppresses tumor growth by inhibiting NOTCH/Hes1‐driven angiogenesis. CAF‐targeted MFAP‐5 RNAi and conserved signaling
Paul Schneider +20 more
wiley +1 more source
Investigations on push-relabel based algorithms for the maximum transversal problem [PDF]
, 2012 We investigate the push-relabel algorithm for solving the problem of finding a maximum cardinality matching in a bipartite graph in the context of the maximum transversal problem.
Kaya, Kamer +3 more
core +3 more sources
On Algebraic and Geometric Kekulé Structures in Benzenoid Rotagraphs [PDF]
, 2006 Recently introduced algebraic Kekulé structures (AKS) describe the π-electron distribution within rings of a conjugated network. The ratio of the AKS count to the classical Kekulé structures count was studied in benzenoid rotagraphs. By considering three
Ante Graovac +2 more
core +1 more source
Modular Donor‐Acceptor Diradicaloids Based on an Electron Deficient N‐Heteroacene Acceptor
Small, Volume 22, Issue 20, 7 April 2026.This work presents a modular approach to donor‐acceptor‐donor (D‐A‐D) diradicaloids that show systematic evolution of their energy gaps, singlet‐triplet splittings, and diradical character (y). The correlation of (opto)electronic, spin, and magnetic properties with high‐fidelity theoretical investigations provides clear connections between the degree ...
Tanner L. Smith +9 more
wiley +1 more source
Acta Crystallographica Section B, Volume 82, Issue 2, Page 224-236, April 2026.Crystal chemical rules are powerful tools to understand and rationalize inorganic crystal chemical structures. Using an automated approach, Beck's extended coordination number rule is proven to correctly rationalize the coordination within 82.2% of all ternary fluorides.Crystal chemical rules are widely applied to understand and rationalize inorganic ...
Niklas Langer, Holger Kohlmann
wiley +1 more source