Претраживање
Приказ резултата 1-10 од 461
The effect of different extractants on lead desorption from a natural mineral
(Elsevier B.V., 2015)
Natural minerals, such as quartz, clinoptilolite and calcite, are useful as sorbents for various applications, but their content of heavy metals ions is the most problematic obstacle to their application. Before their ...
Stability Calculation of the Plane Steel Frame Structures Using Tangent Modulus Theory
(Hindawi, 2023)
This paper considers the phenomenon of the instability of steel plane frame structures in the elastic-plastic domain. The numerical analysis uses FEM, where the corresponding stiffness matrices are based upon the trigonometric ...
On anisotropic elasticity damage mechanics
(International Journal of Damage Mechanics, 2013)
The anisotropic elasticity damage mechanics is considered within the framework of the classical theory of elasticity. Starting from the principle of strain equivalence and notion of isotropic group, damage tensor components ...
Enhanced Arsenic Sorption by Hydrated Iron (III) Oxide-Coated Materials-Mechanism and Performances
(Water Environment Federation, 2011)
Mechanism and performances of arsenic(III) [As(III)] and arsenic(V) [As(V)] sorption onto hydrated iron(III) oxide (HFO)-coated materials were investigated at neutral pH where arsenic occurs in both molecular and ionic ...
Conservation of resources in the pulp and paper industry derived from cleaner production approach
(Resources Conservation and Recycling, 2011)
This paper analyses the utilization of water and recycled fiber from waste paper for the production in one Serbian cardboard mill. Water and fiber consumption, wastewater generation and its characteristics, as well as ...
Simplified method for generating slope seismic deformation hazard curve
(Elsevier Ltd, 2015)
A simplified method for generating slope deformation hazard curve that takes into account the variations of input parameters is presented in this paper. The main assumption in the new approach is that the occurrence of ...
Developing Cost Estimation Models for Road Rehabilitation and Reconstruction: Case Study of Projects in Europe and Central Asia
(Journal of Construction Engineering and Management, 2014)
This paper presents the development of prediction models for the unit costs of road works that could be applied to strategic planning of road works at the network level. A specialized data set was used, which was generated ...
Estimation of the variance components in various covariance matrix structures
(Survey Review, 2011)
This article describes the procedure of obtaining variance component estimates with the Minimum Norm Quadratic Unbiased Estimator (MINQUE). Using the examples of simulated measurements, variance components are estimated ...
Free vibrations of laminated composite shells using the rotation-free plate elements based on Reddy's layerwise discontinuous displacement model
(Elsevier Ltd, 2016)
The goal of this paper is to develop a computational model for the free vibration analysis of laminated composite shells with embedded delaminations. Laminated composite shells of different shape are modeled using the ...
Time-dependent analysis of composite and prestressed beams using the slope deflection method
(Springer Verlag, 2015)
The paper presents the viscoelastic analysis of composite and prestressed beams using the slope deflection method. For the fixed-end frame element, considering the viscoelastic behavior of concrete and relaxation of ...