Results 91 to 100 of about 11,588,553 (239)

Solution Procedure for Transport Modeling in Effluent Recharge Based on Operator-Splitting Techniques

open access: yesModelling and Simulation in Engineering, 2008
The coupling of groundwater movement and reactive transport during groundwater recharge with wastewater leads to a complicated mathematical model, involving terms to describe convection-dispersion, adsorption/desorption and/or biodegradation, and so ...
Shutang Zhu, Gang Zhao, Yuanle Ma
doaj   +1 more source

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

open access: yesJournal 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   +10 more
wiley   +1 more source

Efficient stress topology optimization based on multigrid preconditioned conjugate gradient method

open access: yesJixie qiangdu
ObjectiveLarge calculation scale and slow convergence speed exist in structural stress topology optimization. Considering the computational requirements of large-scale finite element analysis, the multigrid preconditioned conjugate gradient (MGCG) method
GAO Dawei   +3 more
doaj  

Investigation of the Contamination Control in a Cleaning Room with a Moving AGV by 3D Large-Scale Simulation

open access: yesJournal of Applied Mathematics, 2013
The motions of the airflow induced by the movement of an automatic guided vehicle (AGV) in a cleanroom are numerically studied by large-scale simulation.
Qing-He Yao, Qing-Yong Zhu
doaj   +1 more source

Representation of Long‐Term Observed UK Winter Precipitation Trends and Variability in UKCP18 Global Climate Models

open access: yesInternational Journal of Climatology, EarlyView.
Evaluating historical precipitation trends is complicated by interactions between variability in atmospheric circulation and thermodynamic forcing. This study assesses 1901–2023 UK winter precipitation trends in UK Climate Projections 2018 (UKCP18) global climate models using dynamical adjustment to separate circulation‐driven and non‐dynamical ...
James G. Carruthers   +3 more
wiley   +1 more source

A Fast Algorithm for Image Super-Resolution from Blurred Observations

open access: yesEURASIP Journal on Advances in Signal Processing, 2006
We study the problem of reconstruction of a high-resolution image from several blurred low-resolution image frames. The image frames consist of blurred, decimated, and noisy versions of a high-resolution image.
Ng Michael K, Bose Nirmal K, Yau Andy C
doaj   +1 more source

From Rare to Recurrent: Intensifying Hot–Dry Extremes Across Romania

open access: yesInternational Journal of Climatology, EarlyView.
Romania has undergone a marked shift toward more frequent and spatially extensive compound hot–dry months since the 1990s, with persistent hotspots in the eastern Moldavian Plateau and the lower Danube–Bărăgan–Black Sea lowlands and comparatively buffered conditions at higher elevations.
Viorica Nagavciuc, Monica Ionita
wiley   +1 more source

ERA5 Can Overstate Changes in the Frequency of Extreme Heat: A New Zealand Case Study

open access: yesInternational Journal of Climatology, EarlyView.
ERA5 reproduces broad patterns of summer warming across New Zealand but underestimates temperature variability and warm‐tail extremes, biasing estimates of extreme heat risk. ABSTRACT Summertime temperature extremes exert profound impacts on human health, ecosystems, and infrastructure, yet their characteristics and drivers remain poorly quantified in ...
Sayed Waseem Iqbal   +2 more
wiley   +1 more source

Multigrid preconditioned conjugate gradient method in the mechanical analysis of heterogeneous solids

open access: yes, 2017
Multigrid preconditioned conjugate gradient method in the mechanical analysis of heterogeneous ...
Häfner, Stefan, Könke, Carsten
core  

Fast Forward and Inversion of Full Tensor Gravity Gradients Based on the BTTB Matrix Structure

open access: yesDonghua Ligong Daxue Xuebao. Ziran Kexue Ban
[Objective] Full-tensor gravity gradient data contain richer high-frequency information compared to traditional gravity anomaly data, providing advantages such as higher information capacity, improved accuracy in resolving subsurface anomalies, and ...
XIONG Luofan   +4 more
doaj   +1 more source

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