Results 21 to 30 of about 51,291 (216)

Hydrogeochemical Characteristics of Geothermal Waters from Mesozoic Formations in the Basement of the Central Part of the Carpathian Foredeep and the Carpathians (Poland) Using Multivariate Statistical Methods

open access: yesEnergies, 2021
The subject of this study is the chemical composition of potentially geothermal waters of the Mesozoic basement of the central part of the Carpathian Foredeep and the Outer Carpathians regions.
Joanna Jasnos
doaj   +1 more source

The application of numerical modeling to geothermal investments

open access: yesComputer Assisted Methods in Engineering and Science, 2017
Among numerous applications of numerical modeling in many different fields of science, there is numerical modeling applied to the issues related to geothermal investments [1].
Anna Wachowicz-Pyzik   +3 more
doaj   +1 more source

Assessment of the Effective Variants Leading to Higher Efficiency for the Geothermal Doublet, Using Numerical Analysis‒Case Study from Poland (Szczecin Trough)

open access: yesEnergies, 2020
Numerical models of geothermal doublet allows us to reduce the high risk associated with the selection of the most effective location of a production well.
Anna Wachowicz-Pyzik   +4 more
doaj   +1 more source

Some statistical consideration of azimuth and inclination angles determination based on walk - away VSP data in Python [PDF]

open access: yesE3S Web of Conferences, 2019
It is a common knowledge that proper inclinations and azimuth angle determination is a critical step in processing and interpretation of walk-away VSP data.
Zaręba Mateusz   +2 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

open access: yesAdvanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak   +3 more
wiley   +1 more source

Multi-Criteria Studies and Assessment Supporting the Selection of Locations and Technologies Used in CO2-EGS Systems

open access: yesEnergies, 2021
The paper describes application of the cross-impact method in the process of selecting locations and technologies used in a geothermal system based on energy accumulated in a dry rock formation, where CO2 is used as the working medium.
Leszek Pająk   +7 more
doaj   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

open access: yesAdvanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee   +7 more
wiley   +1 more source

Geothermobaric criteria for oil-and-gas bearing in the Dnieper-Donets Graben

open access: yesГеофизический журнал
  To evaluate exploration areas and forecast individual productive horizons of exploration for oil and gas, it is necessary to establish patterns in the location of the already explored hydrocarbon deposits.
I.M. Kurovets   +4 more
doaj   +1 more source

Isolation of Surfactants Synthesized by the Pseudomonas Bacteria and Study of Their Properties

open access: yesInnovative Biosystems and Bioengineering, 2019
Background. The important problem of biosurfactants production is biosynthesis optimization. But lack of effective isolation methods elaboration with simultaneous new costeffective products is the greatest weaknesses of existing technologies.
Tetyana Pokynbroda   +3 more
doaj   +1 more source

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