Results 131 to 140 of about 33,663 (213)
Composite Pt/V + Pt/KB electrodes enhance PEMFC efficiency through synergistic optimization of O₂ diffusion, H⁺ conduction, and catalytic activity. ABSTRACT This study introduces an innovative composite cathode catalyst layer (CCL) design for proton exchange membrane fuel cells (PEMFCs), combining Pt‐supported by Vulcan carbon (Pt/V) and Ketjenblack ...
Siming Li +10 more
wiley +1 more source
On the oscillation criteria for neutral differential equations with several delays. [PDF]
Alqhtani M +3 more
europepmc +1 more source
Tetrapentylammonium forms a stable complex with c‐MYC G‐quadruplex, in which the ligand is positioned above the terminal G9‐G13‐G18‐G22 quartet of the host structure and is surrounded by the 3'‐(T23‐A24‐A25) flanking region. The binding proceeds with the release of waters of hydration and a slight decrease in the dynamics of the G‐quadruplex.
Xuan Li +4 more
wiley +1 more source
A test system of 14 singly protonated bis‑pyridine salts, with varying H‑bonded and London dispersion interactions, was designed to systematically study non‑covalent interactions across the gas, solution, and solid phases. A good correlation between the 1H chemical shift and the N‐H–N angle from the crystal structures was established.
Adélaïde Savoy +3 more
wiley +1 more source
Local sensitivity analysis of a supercritical extraction model
Abstract This study investigates the process of chamomile oil extraction from chamomile flowers. A parameter‐distributed model, consisting of a set of partial differential equations, was used to describe the governing mass transfer phenomena between solid and fluid phases under supercritical conditions using carbon dioxide as the solvent.
Oliwer Sliczniuk, Pekka Oinas
wiley +1 more source
Abstract Modern longitudinal data from wearable devices consist of biological signals at high‐frequency time points. Distributed statistical methods have emerged as a powerful tool to overcome the computational burden of estimation and inference with large data, but methodology for distributed functional regression remains limited.
Cole Manschot, Emily C. Hector
wiley +1 more source
Tree Height and the Asymptotic Mean of the Colijn-Plazzotta Rank of Unlabeled Binary Rooted Trees. [PDF]
Devroye L +3 more
europepmc +1 more source
Restricted Tweedie stochastic block models
Abstract The stochastic block model (SBM) is a widely used framework for community detection in networks, where the network structure is typically represented by an adjacency matrix. However, conventional SBMs are not directly applicable to an adjacency matrix that consists of nonnegative zero‐inflated continuous edge weights.
Jie Jian, Mu Zhu, Peijun Sang
wiley +1 more source
Accelerated First-Passage Dynamics in a Non-Markovian Feedback Ornstein-Uhlenbeck Process. [PDF]
Coghi F, Duvezin R, Wettlaufer JS.
europepmc +1 more source
Rank‐based estimation of propensity score weights via subclassification
Abstract Propensity score (PS) weighting estimators are widely used for causal effect estimation and enjoy desirable theoretical properties, such as consistency and potential efficiency under correct model specification. However, their performance can degrade in practice due to sensitivity to PS model misspecification.
Linbo Wang +3 more
wiley +1 more source

