Results 61 to 70 of about 90,052 (244)

Microstructural and UCS behavior of clay soils stabilized with hybrid nano-enhanced additives

open access: yesReviews on Advanced Materials Science
In this study, both individual and hybrid effects of industrial wastes (silica fume, fly ash), fibers (glass and basalt) and nanoparticles (nano SiO2, nanoclay) mixed with clay at different ratios were investigated in detail at macro and micro levels at ...
Doğan Nagihan, Fırat Müge Elif
doaj   +1 more source

Semi‐analytical solution for the stability of deep vertical shaft considering time‐dependent rock‐structure interaction

open access: yesDeep Underground Science and Engineering, EarlyView.
A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen   +5 more
wiley   +1 more source

A administração clássica: um estudo aplicado a centrais de atendimento (call center)

open access: yesRevista de Administração IMED, 2015
As organizações modernas, a exemplo de operações de centrais de atendimento, ou call centers, tem atuado em diversas áreas de negócios, que pode ser do simples atendimento, como os serviços de atendimento a clientes - SAC, a grandes empresas com foco em ...
Jairo Moran Carvalho Ribeiro   +4 more
doaj   +1 more source

Optimization of carbon nanotube ultracapacitor for cell design [PDF]

open access: yes, 2016
We report a methodology to optimize vertically grown carbon nanotube (CNT) ultracapacitor (CNU) geometrical features such as CNT length, electrode-to-electrode separation, and CNT packing density.
Orphanou, Antonis   +2 more
core   +1 more source

Atomic and molecular complex resonances from real eigenvalues using standard (hermitian) electronic structure calculations

open access: yes, 2015
Complex eigenvalues, resonances, play an important role in large variety of fields in physics and chemistry. For example, in cold molecular collision experiments and electron scattering experiments, autoionizing and pre-dissociative metastable resonances
Haritan, Idan   +3 more
core   +2 more sources

Numerical and experimental study on P‐wave propagation across a rock joint with different orientations

open access: yesDeep Underground Science and Engineering, EarlyView.
Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei   +4 more
wiley   +1 more source

INFLUÊNCIA DA IMAGEM E PERCEPÇÃO DE VALOR NA INTENÇÃO DE COMPRA DE CARNE DE FRANGO: UM ESTUDO QUANTITATIVO

open access: yesRACE: Revista de Administração, Contabilidade e Economia, 2015
O Brasil ocupa, atualmente, posição destacada no cenário mundial como produtor e exportador de carne de frango, gerando empregos e a permanência do homem no campo.
Deonir De Toni   +3 more
doaj   +1 more source

Estratégias de Educação Corporativa: universidades corporativas na prática [PDF]

open access: yes, 2007
A report for the Government of Brazil on research into Corporate Universities worldwide and the implications for Brazil. O ritmo acelerado de mudanças na maior parte dos setores da economia mundial vem sendo uma grande fonte de ansiedade para ...
Paton, Rob   +2 more
core  

Two UC-Sets Whose Union is Not a UC-Set [PDF]

open access: yesProceedings of the American Mathematical Society, 1982
It is shown that the union of two sets of uniform convergence need not be a set of uniform convergence.
openaire   +1 more source

Advancing mine pillar design: Evaluating traditional methods and integrating AI for enhanced stability of pillars in the Great Dyke, Zimbabwe

open access: yesDeep Underground Science and Engineering, EarlyView.
B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza   +4 more
wiley   +1 more source

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