Results 11 to 20 of about 399,385 (262)

Three-dimensional geologic modeling and groundwater flow modeling of the Töllinperä aquifer in the Hitura nickel mine area, Finland - Providing the framework for restoration and protection of the aquifer [PDF]

open access: yesBulletin of the Geological Society of Finland, 2004
Elevated concentrations of sulphate, chloride, and nickel were discovered in water samples taken from the Töllinperä aquifer in western Finland. The area is located adjacent to the tailings area of the Hitura nickel mine.
A. Artimo   +3 more
doaj   +1 more source

Analysis of Flow and Land Use on the Hydraulic Structure of Southeast Mexico City: Implications on Flood and Runoff

open access: yesLand, 2023
The southeast of Mexico City is one of the last areas of environmental importance for the region. However, rapid urban expansion has led to a runoff increase in the presence of intense rainfall.
Rosanna Bonasia   +2 more
doaj   +1 more source

NUMERICAL MODELING OF AIR POLLUTION FROM DUMPS

open access: yesNauka ta progres transportu, 2019
Purpose. Rock dumps are long-term sources of air pollution. A significant amount of harmful substances enters the atmosphere. Particularly intense is the pollution of atmospheric air due to dusting dumps.
M. M. Biliaiev   +4 more
doaj   +1 more source

Modeling of Underactuated Ball and Beam System—A Comparative Study

open access: yesActuators, 2023
The article presents a comparison of the methods of modeling the underactuated ball and beam system. This study was carried out to select a model suitable for the development of a control system using the model-based design methodology.
Grzegorz Gembalczyk   +2 more
doaj   +1 more source

A numerical study of a left ventricular expander for heart failure with preserved ejection fraction

open access: yesRoyal Society Open Science, 2023
Increased cardiac stiffness hinders proper left ventricular (LV) expansion, resulting in decreased volume and diastolic dysfunction. LV expanders are spring-like devices designed to improve diastolic function by facilitating mechanical outward expansion.
Jonathan Weissmann   +3 more
doaj   +1 more source

Long span bridges buffeting response to wind turbulence [PDF]

open access: yesИнженерно-строительный журнал, 2020
The buffeting response of the cable-supported bridges is studied. Several wind turbulence models are summarized and wind field models for practical application in bridge and structural engineering is proposed. The wind turbulence model comprises the mean
R.N. Guzeev, A. Domaingo
doaj   +1 more source

Numerical Investigation of Extreme Wave-Induced Loading on Box Girder in Marine Environment

open access: yesJournal of Marine Science and Engineering, 2018
In this paper, a 2D numerical model for wave-girder interaction was proposed to estimate the maximum wave forces on the box girder of a coastal bridge under extreme wave conditions.
Baoshan Xiang   +3 more
doaj   +1 more source

A review of friction models in interacting joints for durability design

open access: yesFriction, 2017
This paper presents a comprehensive review of friction modelling to provide an understanding of design for durability within interacting systems. Friction is a complex phenomenon and occurs at the interface of two components in relative motion.
Zulfiqar A. Khan   +2 more
doaj   +1 more source

Settling Suspensions Flow Modelling: A Review

open access: yesKONA Powder and Particle Journal, 2014
In spite of the widespread application of settling suspensions, their inherent complexity has yet to be properly predicted by a unified numerical model or empirical correlation, and usually industries still possess customized charts or data for their ...
Rui Silva   +3 more
doaj   +1 more source

Efficiency Analysis of Low Electric Power Drives Employing Induction and Synchronous Reluctance Motors in Pump Applications

open access: yesEnergies, 2019
Due to the rapid increase in the number of variable speed AC drives, the analysis of their energy efficiency has become highly essential. However, such an analysis requires consideration of a wide variety of factors.
Vadim Kazakbaev   +5 more
doaj   +1 more source

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