Results 171 to 180 of about 242,274 (310)

Quantum Electrodynamics from Quantum Cellular Automata, and the Tension Between Symmetry, Locality, and Positive Energy. [PDF]

Entropy (Basel)
Brun TA, Mlodinow L.
europepmc   +1 more source

Electronic and Magnetic Properties of Ferrous Iron in a True Square‐Planar Molecular Environment

Chemistry – A European Journal, EarlyView.
Spin Hamiltonian parameters of an iron(II) phthalocyanine are obtained by pNMR, THz‐EPR, and quantum chemical calculations. Large zero field splitting and the peculiar g‐tensor pattern originate from mixing of the 3A2g ground state with two 3Eg‐excited states of almost the same energy. This forms the basis for correlations between magnetism, structure,
Tim Marcel Diederich, Tim Wehland, Maximilian Schrodt, Nikolai Kochetov, Alexander Schnegg, Carlos M. Jimenez‐Muñoz, Vera Krewald, Lingmei Ni, Nicole Segura Salas, Ulrike I. Kramm, Joachim Ballmann, Markus Enders   +11 more
wiley   +1 more source

A Comparison of the Next Eigenvalue Sufficiency Test to Other Stopping Rules for the Number of Factors in Factor Analysis. [PDF]

Educ Psychol Meas
Caron PO.
europepmc   +1 more source

Minimum number of distinct eigenvalues of distance-regular and signed Johnson graphs [PDF]

Shaun Fallat, Himanshu Gupta, Allen Herman, Johnna Parenteau   +3 more
openalex   +1 more source

Nucleophilic Addition versus Migratory Insertion Pathways in the Gold‐Catalysed Heck Reaction: A Computational Study

Chemistry – A European Journal, Accepted Article.
The initial reaction steps in the formation of Heck‐type arylated alkenes catalysed by P^N chelated Au(III) complexes have been studied computationally. Two mechanistic alternatives have been explored: (1) alkene coordination and insertion into a gold‐carbon bond, and (2) nucleophilic attack on a gold(III) alkene adduct. The common starting point, the [
Peter H. M. Budzelaar, Luca Rocchigiani, Manfred Bochmann   +2 more
wiley   +1 more source

Genetic diversity and agro-morphological characterization of cassava varieties provides insight for breeding and crop improvement. [PDF]

Sci Rep
Kumar SS, Prasad S, Wani OA, El-Hendawy S, Mattar MA, Salem A.   +5 more
europepmc   +1 more source

Optimal control of axial dispersion tubular reactors with recycle: Addressing state‐delay through transport PDEs

The Canadian Journal of Chemical Engineering, Volume 103, Issue 8, Page 3751-3766, August 2025.
The boundary‐regulated distributed parameter system of an axial dispersion tubular reactor with delayed recycle is showcased, along with the optimal observer‐based control strategy developed using a late‐lumping method for its stabilization. Abstract The optimal control of an axial tubular reactor with a recycle stream is addressed as a key type of ...
Behrad Moadeli, Guilherme Ozorio Cassol, Stevan Dubljevic   +2 more
wiley   +1 more source

Optimal metrics for the first curl eigenvalue on 3-manifolds. [PDF]

Calc Var Partial Differ Equ
Enciso A, Gerner W, Peralta-Salas D.
europepmc   +1 more source

Impact of slug length in gas–liquid two‐phase flow on the structural stress characteristics of horizontal rigid pipelines

The Canadian Journal of Chemical Engineering, EarlyView.
Data collection and processing of slug length in two‐phase flow‐induced stress analysis. Abstract The intermittent passage of liquid slugs and gas pockets in slug flow generates substantial cyclic stress damage to piping systems and their supports. This issue poses significant challenges to the various industries in which this flow pattern is present ...
Abdalellah O. Mohmmed, Hussain H. Al‐Kayiem, Abderraouf Arabi   +2 more
wiley   +1 more source

Do Sharpness-Based Optimizers Improve Generalization in Medical Image Analysis? [PDF]

IEEE Access
Hassan M, Vakanski A, Zhang B, Xian M.
europepmc   +1 more source