Results 21 to 30 of about 9,047,121 (245)

Power systems generation scheduling and optimisation using evolutionary computation techniques [PDF]

open access: yes, 1996
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Optimal generation scheduling attempts to minimise the cost of power production while satisfying the various operation constraints and physical limitations ...
Orero, Shadrack Otieno
core   +7 more sources

A prototype system for the hydrothermal oxidation of feces

open access: yesWater Research X, 2022
To ensure access to safe sanitation facilities in rural communities, cheap off-grid technologies need to be developed to substitute pit latrines and open defecation. In this study, we present a prototype system based on hydrothermal oxidation, which, under optimal conditions, converts a fecal sludge simulant almost completely to CO 2 and water ...
Joël Affolter   +3 more
openaire   +4 more sources

Novel barite chimneys at the Loki´s Castle Vent Field shed light on key factors shaping microbial communities and functions in hydrothermal systems

open access: yesFrontiers in Microbiology, 2016
In order to fully understand the cycling of elements in hydrothermal systems it is critical to understand intra-field variations in geochemical and microbiological processes in both focused, high-temperature and diffuse, low-temperature areas.
Ida Helene eSteen   +7 more
doaj   +1 more source

Feasibility to Use Continuous Magnetotelluric Observations for Monitoring Hydrothermal Activity. Numerical Modeling Applied to Campi Flegrei Volcanic System (Southern Italy)

open access: yesFrontiers in Earth Science, 2019
The magnetotelluric (MT) method is useful for monitoring geophysical processes because of a large dynamic depth range. In this paper, a feasibility study of employing continuous MT observations to monitor hydrothermal systems for both volcanic hazard ...
Rolando Carbonari   +2 more
doaj   +1 more source

Cation-Exchange Capacity Distribution within Hydrothermal Systems and Its Relation to the Alteration Mineralogy and Electrical Resistivity

open access: yesEnergies, 2020
Cation-exchange capacity (CEC) measurements are widely used to quantify the smectite content in altered rocks. Within this study, we measure the CEC of drill cuttings in four wells from three different high-temperature geothermal areas in Iceland.
Tobias Björn Weisenberger   +3 more
doaj   +1 more source

Geochemical and Visual Indicators of Hydrothermal Fluid Flow through a Sediment-Hosted Volcanic Ridge in the Central Bransfield Basin (Antarctica) [PDF]

open access: yes, 2013
In the austral summer of 2011 we undertook an investigation of three volcanic highs in the Central Bransfield Basin, Antarctica, in search of hydrothermal activity and associated fauna to assess changes since previous surveys and to evaluate the extent ...
Aquilina Alfred   +29 more
core   +2 more sources

Diffuse flow environments within basalt- and sediment-based hydrothermal vent ecosystems harbor specialized microbial communities [PDF]

open access: yes, 2013
Hydrothermal vents differ both in surface input and subsurface geochemistry. The effects of these differences on their microbial communities are not clear.
Lisa eZeigler Allen   +18 more
core   +1 more source

Field study of the ultra-acidic thermal springs "Blue Lakes" on Baransky volcano (Iturup Island, Southern Kuril Islands) in 2025 [PDF]

open access: yesГеосистемы переходных зон
Preliminary results of field surveys (July 2025) of the ultra-acid sulfate-chloride thermal springs of the " Blue Lakes" which discharge in the Kipyashchiy Stream valley on the slope of the active Baransky volcano (Iturup Island, Southern Kuril Islands)
Degterev, Artem V., Romanyuk, Fedor A.
doaj   +1 more source

Submarine Shallow-Water Fluid Emissions and Their Geomicrobiological Imprint: A Global Overview

open access: yesFrontiers in Marine Science, 2021
Submarine fluids emissions in the form of geothermal vents are widespread in a variety of geological settings ranging from volcanic to tectonically active areas.
Giorgio Caramanna   +2 more
doaj   +1 more source

The discovery of new deep-sea hydrothermal vent communities in the Southern Ocean and implications for biogeography [PDF]

open access: yes, 2012
Since the first discovery of deep-sea hydrothermal vents along the Galápagos Rift in 1977, numerous vent sites and endemic faunal assemblages have been found along mid-ocean ridges and back-arc basins at low to mid latitudes.
Hawkes, Jeffrey   +221 more
core   +1 more source

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