Results 81 to 90 of about 24,571,438 (253)

Diffusible signal factor signaling controls bioleaching activity and niche protection in the acidophilic, mineral-oxidizing leptospirilli

open access: yesScientific Reports, 2021
Bioleaching of metal sulfide ores involves acidophilic microbes that catalyze the chemical dissolution of the metal sulfide bond that is enhanced by attached and planktonic cell mediated oxidation of iron(II)-ions and inorganic sulfur compounds ...
Sören Bellenberg   +8 more
doaj   +1 more source

Shape Optimization and Hydraulic Characteristics Analysis of Unilateral Divergent Stilling Basin

open access: yesRenmin Zhujiang
The spillway of Dongchong Reservoir adopts an engineering scheme of spillway step energy dissipation and downstream stilling basin underflow. However, due to the limitations of terrain and geological conditions, the width of the stilling basin is small ...
SHI Linping   +4 more
doaj   +2 more sources

Experimental study of the flow field in patient specific lower airways [PDF]

open access: yes, 2009
In this study Particle Image Velocimetry (PIV) is used to visualize and measure airflow in the lower airways. Using Rapid Prototyping Manufacturing (RPM) technology, a hydraulic in vitro model was developed and constructed.
Claessens, Tom   +4 more
core  

Real-time Dynamic Hydraulic Model for Potable Water Loss Reduction

open access: yes, 2016
South Africa is a water scarce country with limited water resources and steadily growing water demand. Unacceptably high water losses and non-revenue water threaten our water resource security as well as the financial viability of municipal water service
A. Abu-Mahfouz   +4 more
semanticscholar   +1 more source

Modeling Scavenging for a Hydraulic Free-Piston Engine [PDF]

open access: yes, 2020
The hydraulic free-piston engine at the University of Minnesota offers a solution to improve the hydraulic efficiency and reduce emission output of off-road vehicles.
Davies, Nathan
core   +1 more source

Hydraulic model with roughness coefficient updating method based on Kalman filter for channel flood forecast

open access: yesWater Science and Engineering, 2011
A real-time channel flood forecast model was developed to simulate channel flow in plain rivers based on the dynamic wave theory. Taking into consideration channel shape differences along the channel, a roughness updating technique was developed using ...
Hong-jun Bao, Lin-na Zhao
doaj   +1 more source

Homogenization of two fluid flow in porous media

open access: yes, 2015
The macroscopic behavior of air and water in porous media is often approximated using Richards’ equation for the fluid saturation and pressure. This equation is parametrized by the hydraulic conductivity and water release curve.
Daly, K. R., Roose, T.
core   +2 more sources

Flood inundation mapping by GIS and a hydraulic model (hec ras): a case study of Akarcay Bolvadin subbasin, in Turkey

open access: yes, 2016
In this study, it is aimed to constitute flood inundation maps for Akarcay Bolvadin Subbasin. Topographic data of study area is defined for hydraulic model by sectioning along the river on Digital Elevation Model (DEM) which is created by ArcGIS, a ...
Y. Içağa, Emin Taş, M. Kilit
semanticscholar   +1 more source

Baldhill Spillway. Hydraulic Model Investigation [PDF]

open access: yes, 1993
Abstract : Model tests of the existing Baldhill Spillway were conducted with symmetrical and asymmetrical spillway gate openings to determine for selected flow conditions the characteristics of the hydraulic pulsating pressures acting on the surface of the spillway chute and stilling basin apron.
openaire   +2 more sources

Model of Continuous Cheese Whey Fermentation by Candida Pseudotropicalis [PDF]

open access: yes, 2009
The utilization of cheese whey as a fermentation substrate to produce bio-ethanol is an effort to supply bio-ethanol demand as a renewable energy. Like other process systems, modeling is also required for fermentation process design, optimization and ...
Agustriyanto, Rudy   +1 more
core  

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