Results 21 to 30 of about 15,971,534 (326)

On the stabilization of ion sputtered surfaces [PDF]

open access: yes, 2007
The classical theory of ion beam sputtering predicts the instability of a flat surface to uniform ion irradiation at any incidence angle. We relax the assumption of the classical theory that the average surface erosion rate is determined by a Gaussian ...
Aziz, Michael J.   +2 more
core   +2 more sources

Strength anisotropy at soil-structure interfaces with snake skin inspired structural surfaces [PDF]

open access: yesE3S Web of Conferences, 2019
Typical soil-structure interfaces exhibit a response that is independent of loading direction due to the symmetry of the surfaces' profile. This study presents results from an experimental investigation on the response of sand specimens sheared against ...
Stutz Hans Henning   +4 more
doaj   +1 more source

Spin-isospin surface responses

open access: yesPhysics Letters B, 1987
Abstract The excitation of spin-isospin modes at the surface of a nucleus is investigated in an RPA framework, utilizing a harmonic oscillator basis. The effect of the mixing between the spin-longitudinal and spin-transverse couplings is found to play an important role in explaining the absence of contrast in the ratio between the longitudinal and ...
ALBERICO, Wanda Maria   +4 more
openaire   +1 more source

Reconfigurable Intelligent Surfaces for 6G Systems: Principles, Applications, and Research Directions

open access: yesIEEE Communications Magazine, 2021
Reconfigurable intelligent surfaces (RISs) or intelligent reflecting surfaces (IRSs) are regarded as one of the most promising and revolutionizing techniques for enhancing the spectrum and/ or energy efficiency of wireless systems.
Cunhua Pan   +11 more
semanticscholar   +1 more source

The influence of different technological co-adjuvants on the quality and yield of virgin olive oil using response surfaces methodology

open access: yesGrasas y Aceites, 2008
Response surface methodology was employed to evaluate the effects of two technological co-adjuvants in virgin olive oil extraction from the Hojiblanca olive variety with a low ripening index: the addition of talc during the malaxation of the olive paste ...
Diego G. Fernández Valdivia   +2 more
doaj   +1 more source

A Process Planning Method and Data Format for Achieving Tolerances in Stereolithography [PDF]

open access: yes, 1998
When building parts in a stereolithography apparatus (SLA), the user is faced with many decis!ons regarding the setting of process variables. To 'achieve a set of tolera~ces as closely as pOSSIble, relationships between part geometry, tolerances, and ...
Lynn, Charity M.   +2 more
core   +1 more source

Local and Systemic In Vivo Responses to Osseointegrative Titanium Nanotube Surfaces

open access: yesNanomaterials, 2021
Orthopedic implants requiring osseointegration are often surface modified; however, implants may shed these coatings and generate wear debris leading to complications. Titanium nanotubes (TiNT), a new surface treatment, may promote osseointegration.
Erin A. Baker   +6 more
doaj   +1 more source

Parametric analysis of the ionic concentrations effects in the behavior of the sinoatrial node

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2013
A sensibility study on the effect of ionic concentrations in the behavior of the sinoatrial node was carried out. The study was based on the model proposed by H. Zhang, A. V. Holden and M.R. Boyett.
Daniel Alfonso Sierra   +2 more
doaj   +1 more source

Green/sustainable treatment of washing machine greywater for reuse in the built environment

open access: yesCleaner Engineering and Technology, 2022
Given the growing demand for water in the world, approaches and/or actions are needed to reduce consumption and increase demand. In the latter case, water reuse is a viable alternative to increase the demand for non-potable water in homes.
Karen Campos Rodrigues   +2 more
doaj   +1 more source

Otimização da resistência mecânica de corpos cerâmicos em função de matérias-primas e restrições de propriedades tecnológicas Optimization of mechanical strength of ceramic bodies as a function of raw materials and restrictions on technological properties

open access: yesCerâmica, 2005
No desenvolvimento e fabricação de revestimentos cerâmicos, propriedades tecnológicas são determinadas basicamente pela combinação de matérias-primas e condições de processamento.
S. L. Correia, D. Hotza, A. M. Segadães
doaj   +1 more source

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