Results 101 to 110 of about 12,250 (191)

Modeling flow in porous media with double porosity/permeability: A stabilized mixed formulation, error analysis, and numerical solutions

, 2017
The flow of incompressible fluids through porous media plays a crucial role in many technological applications such as enhanced oil recovery and geological carbon-dioxide sequestration. The flow within numerous natural and synthetic porous materials that
Ballarini, R., Joodat, S. H. S., Nakshatrala, K. B.   +2 more
core   +1 more source

Assessing the stock recovery of Coilia nasus in the Yangtze River-Poyang Lake waterway and adjacent waters, using the length-based Bayesian biomass method

Frontiers in Marine Science
The comprehensive ten-year fishing ban implemented in the Yangtze River on January 1, 2021, represents a critical ecological conservation measure and national strategic priority in China. Assessment of the ban’s effectiveness is essential to guide future
Yulan Luo, Yulan Luo, Qun Xu, Sheng Wang, Zhengli Luo, Zhengli Luo, Chiping Kong, Legen Peng, Bao Zhang, Baolong Bao, Baolong Bao, Lekang Li, Xiaoling Gong, Xiaoling Gong   +13 more
doaj   +1 more source

An acoustic finite element including viscothermal effects [PDF]

, 2007
In acoustics it is generally assumed that viscous- en thermal boundary layer effects play a minor role in the propagation of sound waves. Hence, these effects are neglected in the basic set of equations describing the sound field. However, for geometries
Boer, A. de, Nijhof, M.J.J., Wijnant, Y.H.   +2 more
core   +4 more sources

Economics of Transporting Poultry Litter from Northwest Arkansas to Eastern Arkansas Croplands [PDF]

Applying baled litter from northwest Arkansas shipped by truck with backhauls, supplemented with chemical fertilizers provided the most cost-efficient method to supply nutrients to crops in eastern Arkansas, according to a GAMS optimization. Shipping raw
Carreira, Rita I., Goodwin, Harold L., Jr., Wailes, Eric J., Young, Kenneth B.   +3 more
core   +1 more source

Recovery of Coilia nasus resources after implementation of the 10-year fishing ban in the Yangtze River: implied from the Yangtze River Estuary and its adjacent sea areas

Frontiers in Marine Science
IntroductionThe implementation of the 10-year fishing ban in the Yangtze River has provided a crucial opportunity for the recovery of rare and endangered diadromous species, such as Coilia nasus.MethodsIn this study, we utilized electronic length ...
Shuyan Wang, Shuyan Wang, Ying Xiong, Hushun Zhang, Hushun Zhang, Dade Song, Dade Song, Yanping Wang, Hui Ge, Chengbin Zhang, Chengbin Zhang, Long Liang, Long Liang, Xiaming Zhong   +13 more
doaj   +1 more source

Numerical simulations of energy storage performance in a close configuration: A Galerkin finite element-based computation

Alexandria Engineering Journal
The energy storage features on natural convection in Casson fluids are investigated in this work using the finite element method. By measuring cylinders and wavy surfaces, we may examine flow patterns and the effectiveness of heat transmission systems ...
Afraz Hussain Majeed, Dong Liu, Ahmed Refaie Ali, Hammad Alotaibi, Zhang Jia Yin, Ren Huan Yi   +5 more
doaj   +1 more source

An Expanded Mixed Finite Element Method for Fractional Dispersion Equations with Variable Coefficient

Fractal and Fractional
In this article, we propose an expanded mixed finite element method for variable-coefficient fractional dispersion equations (FDEs). By introducing two intermediate variables, p=Du and σ=−Iθβp, the FDEs are reformulated into a mixed system involving only
Suxiang Yang, Huanzhen Chen, Feng Wang
doaj   +1 more source

Length‐Based Assessment of the Seven Most Commonly Caught Coral Reef Fish Species to Support Improve Management of Small‐Scale Fisheries in Southwest Madagascar

Aquaculture, Fish and Fisheries
The status of most fish stocks in Madagascar remains poorly documented. Given their importance for food security and livelihoods, it is necessary to define management measures with reliable data.
Miarisoa Lalaina Rakotonaivo, Lala N. J. Ranaivomanana, Charlotte Gough, Jérémie R. Ndriamanja, Danny Kornelio Ravelojaona, Ravakiniaina Frida Razafinaivo, Daniel Raberinary   +6 more
doaj   +1 more source

A penalty method for approximations of the stationary power-law Stokes problem

Electronic Journal of Differential Equations, 2001
We study approximations of the steady state Stokes problem governed by the power-law model for viscous incompressible non-Newtonian flow using the penalty formulation. We establish convergence and find error estimates.
Lew Lefton, Dongming Wei
doaj  

Sustainable Removal of Pesticides from Water Using Biochars Derived from Conocarpus and Lemon Tree Waste. [PDF]

ACS Omega
M Saleh S, Abdel Ghani SB, M Alminderej F, Abdallah OI.   +3 more
europepmc   +1 more source