Results 191 to 200 of about 740,028 (360)

Conformation control of triplet state diffusion in platinum containing polyfluorene copolymers

open access: yesJournal of Polymer Science, Volume 61, Issue 1, Page 83-93, 1 January 2023., 2023
Abstract The spectral diffusion of singlet and triplet excitons in 9,9‐dioctylfluorene‐based conjugated copolymers is investigated using photoluminescence spectroscopy at both low (5 K) and room temperature (300 K). Inclusion of a N,N‐diphenyl‐4‐(pyridin‐2‐yl)aniline moiety into the polymer backbone allows subsequent cyclometalation with platinum ...
Nikol T. Lambeva   +6 more
wiley   +1 more source

Three‐Point Functions of Higher‐Spin Supercurrents in 4D N=1${{\cal N}}=1$ Superconformal Field Theory

open access: yesFortschritte der Physik, Volume 70, Issue 12, December 2022., 2022
Abstract We develop a general formalism to study the three‐point correlation functions of conserved higher‐spin supercurrent multiplets Jα(r)α̇(r)$J_{\alpha (r) \dot{\alpha }(r)}$ in 4D N=1${\cal N}=1$ superconformal theory. All the constraints imposed by N=1${\cal N}=1$ superconformal symmetry on the three‐point function ⟨Jα(r1)α̇(r1)Jβ(r2)β̇(r2)Jγ(r3)
Evgeny I. Buchbinder   +2 more
wiley   +1 more source

Physical components power measurement method of modified current based on geometric algebra

open access: yesDiance yu yibiao
With the wide application of power electronic technology, the non-sinusoidal problem of the system is increasingly prominent due to harmonic interference. On this condition, the traditional power theories are no longer applicable.
YU Jingru, LI Lin, SUN Jiaan
doaj   +1 more source

Differentiated policy implementation in food safety and animal welfare policymaking

open access: yesEuropean Policy Analysis, EarlyView.
Abstract Agri‐food policies are in the midst of far‐reaching transitions, including the transformation towards sustainable production and food consumption. The European Green Deal and Farm to Fork Strategy prioritize food safety and animal welfare issues, aiming to transform food systems towards more sustainability.
Giulia Bazzan, Colette S. Vogeler
wiley   +1 more source

Conformal Interactions Between Matter and Higher‐Spin (Super)Fields

open access: yesFortschritte der Physik, Volume 71, Issue 1, January 2023., 2023
Abstract In even spacetime dimensions, the interacting bosonic conformal higher‐spin (CHS) theory can be realised as an induced action. The main ingredient in this definition is the model S[φ,h]$\mathcal {S}[\varphi ,h]$ describing a complex scalar field φ coupled to an infinite set of background CHS fields h, with S[φ,h]$\mathcal {S}[\varphi ,h ...
Sergei M. Kuzenko   +2 more
wiley   +1 more source

Mod Tanh‐Activated Physical Neural Network MPPT Control Algorithm for Varying Irradiance Conditions

open access: yesEnergy Science &Engineering, EarlyView.
The proposed MPPT controller (CRT‐POA‐PID) is implemented to enhance power efficiency in the PV system. The beta‐distributed point estimation technique is used for mismatch factor correction, improving performance. Simulations show a 98.42% efficiency improvement, a 4.54 dB reduction in total harmonic distortion, and faster convergence compared to ANN ...
Khuong Nguyen‐Vinh   +2 more
wiley   +1 more source

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