Results 21 to 30 of about 1,621,904 (302)

Interactive effects of dietary amino acid density and environmental temperature on growth performance and expression of selected amino acid transporters, water channels, and stress-related transcripts

open access: yesPoultry Science, 2021
: Exposure to heat stress (HS) is one of the challenges facing the broiler industry worldwide. Various nutritional strategies have been suggested, such as altering dietary concentrations of some nutrients. Thus, we evaluated feeding different amino acid (
R.A. Alhotan   +6 more
doaj   +1 more source

Reduced complexity models for water management and anode purge scheduling in DEA operation of PEMFCs [PDF]

open access: yes, 2010
In this work, the dynamic behavior of Fuel Cell operation under Dead-Ended Anode conditions is shown. A DEA can be fed with dry hydrogen, since water crossing through the membrane is sufficient to humidify the fuel.
Siegel, Jason B.   +3 more
core   +1 more source

An experimental investigation of the impact of aquatic weeds trash racks on water surface profile in open channels

open access: yesWater Science, 2019
A considerable quantity of weeds is drafted with flow due to maintenance activities and moving vessels causing serious problem to hydraulic structures and hydropower plants along open channels. Aquatic weed trash screens are normally constructed upstream
Mohamed Salah Abd Elmoaty
doaj   +1 more source

Study of Orbital Angular Momentum Mode Crosstalk Induced by Propagation Through Water [PDF]

open access: yes, 2016
We present measured inter-channel crosstalk for a set of OAM modes propagating through 2.5m of slowly flowing water, similar to that found in oceanic environments.
Berkhout   +5 more
core   +2 more sources

Experimental study and a physical model on the geomorphic response mechanisms of meandering rivers under progressive sediment reduction

open access: yesFrontiers in Earth Science, 2022
As influenced by human activities, including high dam construction, soil and water conservation, and sand mining in the upper reaches of rivers, the amount of sediment entering the lower reaches of the river decreases significantly.
Zhanchao Zhao   +8 more
doaj   +1 more source

Use of high-intensity data to define large river management units: A case study on the lower Waikato River, New Zealand [PDF]

open access: yes, 2014
The importance of environmental heterogeneity in lotic ecosystems is well recognised in river management, and continues to underpin studies of hierarchical patch dynamics, geomorphology and landscape ecology. We evaluated how physical characteristics and
Collier, Kevin J.   +4 more
core   +2 more sources

The Aquaporin Water Channels [PDF]

open access: yesProceedings of the American Thoracic Society, 2006
The topic of my talk, the aquaporins, is something that we have been studying in our lab for the last 15 years. It is not something that I anticipated when starting my career. In fact, I am a hematologist, but in science, sometimes what we find is not what we are looking for. A typical middle-aged man, I weigh 75 kg, of which 50 are water.
openaire   +2 more sources

Activating the role of women in water projects

open access: yesWater Science, 2014
Water is one of our most precious natural resources. A growing human population, and the expansion of economic activities that comes with it, will intensify the pressure on water resources.
Mohammed T. Kholif, Ahmed M. Elfarouk
doaj   +1 more source

Mesoscale Simulation Based on the Dynamic Mean-Field Density Functional Method on Block-Copolymeric Ionomers for Polymer Electrolyte Membranes

open access: yesMembranes, 2023
Block copolymers generally have peculiar morphological characteristics, such as strong phase separation. They have been actively applied to polymer electrolyte membranes for proton exchange membrane fuel cells (PEMFCs) to obtain well-defined hydrophilic ...
Hoseong Kang   +6 more
doaj   +1 more source

Hydraulic flow through a channel contraction: multiple steady states [PDF]

open access: yes, 2007
We have investigated shallow water flows through a channel with a contraction by experimental and theoretical means. The horizontal channel consists of a sluice gate and an upstream channel of constant width $b_0$ ending in a linear contraction of ...
Akers B.   +8 more
core   +7 more sources

Home - About - Disclaimer - Privacy