Results 121 to 130 of about 14,981 (281)

Corticosterone and Mitochondrial Efficiency Are Associated With Changes in DNA Oxidative Damage During an Acute Stress Response in Leach's Storm‐Petrels (Hydrobates leucorhous)

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
ABSTRACT The ability of organisms to effectively respond to challenges is critical for survival. We investigated how an acute stressor affected corticosterone, mitochondrial function, and DNA oxidative damage in a wild population of Leach's storm‐petrels (Hydrobates leucorhous).
Kayla E. Lichtner, Jack K. Dziubek, Nicole A. Joseph, Sarah E. Chapman, Tori J. Chace, Dongxiao Sun, Zachary T. Bitzer, Antoine Stier, Robert A. Mauck, Patricia L. Jones, Mark F. Haussmann   +10 more
wiley   +1 more source

On single-step HSS iterative method with circulant preconditioner for fractional diffusion equations

Advances in Difference Equations, 2019
By exploiting Toeplitz-like structure and non-Hermitian dense property of the discrete coefficient matrix, a new double-layer iterative method called SHSS-PCG method is employed to solve the linear systems originating from the implicit finite difference ...
Mu-Zheng Zhu, Guo-Feng Zhang, Ya-E Qi
doaj   +1 more source

Alaskan Ridge Blocking and Associated Winter Cold Conditions Over North America

International Journal of Climatology, EarlyView.
Multi‐decadal (1979–2023) analysis reveals that wintertime reductions in the meridional gradient of potential vorticity (PVy) over the Bering Sea are recurrent but episodic features of North Pacific circulation. These suppressed PVy states consistently co‐occur with amplified Alaskan ridging, weakened mid‐tropospheric westerlies and a downstream warm ...
Varunesh Chandra, James E. Overland, Muyin Wang   +2 more
wiley   +1 more source

Are West African Heat‐Lows Analogous to Dry Tropical Cyclones?

International Journal of Climatology, EarlyView.
Heat‐lows qualitatively resemble dry tropical cyclones (TCs), though their underlying physics has yet to be compared. In this study, we show that West African transient heat‐low climatology correlates well with TC potential intensity generalised over land.
Aaron Kruskie, Daniel Chavas, Matthew Huber   +2 more
wiley   +1 more source

Simulation of Fluid-Thermal Field in Oil-Immersed Transformer Winding Based on Dimensionless Least-Squares and Upwind Finite Element Method

Energies, 2018
In order to study the coupling fluid and thermal problems of the local winding in oil-immersed power transformers, the least-squares finite element method (LSFEM) and upwind finite element method (UFEM) are adopted, respectively, to calculate the fluid ...
Gang Liu, Zhi Zheng, Dongwei Yuan, Lin Li, Weige Wu   +4 more
doaj   +1 more source

4D Printable Formulations of Mixed Low and High Molecular Weight Liquid Crystalline Units: A Versatile Route to Functional Soft Actuators

Macromolecular Rapid Communications, EarlyView.
This work presents a practical approach for formulating 4D printable inks that incorporates substantial fractions of low molecular weight mesogens. By blending low molecular weight diacrylate or monoacrylate constituents with a high molecular weight main‐chain macromer, the resulting mixture proves suitable for direct ink writing, enabling mechanical ...
Lorena Ceamanos, María López‐Valdeolivas, Pengrong Lyu, Danqing Liu, Dirk J. Broer, Carlos Sánchez‐Somolinos   +5 more
wiley   +1 more source

Parallel Rayleigh Quotient Optimization with FSAI-Based Preconditioning

Journal of Applied Mathematics, 2012
The present paper describes a parallel preconditioned algorithm for the solution of partial eigenvalue problems for large sparse symmetric matrices, on parallel computers.
Luca Bergamaschi, Angeles Martínez, Giorgio Pini   +2 more
doaj   +1 more source

Application of SSOR-PCGM with improved iteration format in FEM simulation of massive concrete

Water Science and Engineering, 2011
In this study, for the purpose of improving the efficiency and accuracy of numerical simulation of massive concrete, the symmetric successive over relaxation-preconditioned conjugate gradient method (SSOR-PCGM) with an improved iteration format was ...
Lin Han, Zi-ming Zhang, Zhi-giang Ni
doaj   +1 more source

Circadian Immunity and Vascular Inflammation in Cardiovascular Disease Chronotherapy Windows: Time for a Re‐Assessment

Med Research, EarlyView.
ABSTRACT Circadian rhythms orchestrate cardiovascular physiology by regulating immune and inflammatory pathways. Disruption of these rhythms profoundly alters vascular homeostasis, thereby promoting the onset and progression of cardiovascular diseases (CVD).
Tian Zhang, Ge Zhang, Tian‐Ding Liu, Tianshu Gu, Fengyi Yu, Pengyuan Xu, Wunan Mi, Xuanjiang Zhao, Qian Guo, Honglin Zheng, Taiqi Zhao, Qiang Li, Di Lu, Mingxuan Duan, Chaoyang Yu, Ruhao Wu, Shiqian Zhang, Haonan Zhang, Zeyu Wang, Youyang Zheng, Yan Xiao, Zenglei Zhang, Ge Zhang   +22 more
wiley   +1 more source

Phase‐Pole‐Free Images and Smooth Coil Sensitivity Maps by Regularized Nonlinear Inversion

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Phase singularities are a common problem in image reconstruction with auto‐calibrated sensitivities due to an inherent ambiguity of the estimation problem. The purpose of this work is to develop a method for detecting and correcting phase poles in non‐linear inverse (NLINV) reconstruction of MR images and coil sensitivity maps ...
Moritz Blumenthal, Martin Uecker
wiley   +1 more source