Results 81 to 90 of about 28,538 (210)

The influence of rest period instructions on the default mode network

open access: yesFrontiers in Human Neuroscience, 2010
The default mode network (DMN) refers to regional brain activity that is greater during rest periods than during attention-demanding tasks and many studies have reported DMN alterations in patient populations.
Christopher eBenjamin   +6 more
doaj   +1 more source

Limiting spectral distribution of Gram matrices associated with functionals of $\beta$-mixing processes

open access: yes, 2014
We give asymptotic spectral results for Gram matrices of the form $ n^{-1}\mathcal{X}_n \mathcal{X}_n^T$ where the entries of $\mathcal{X}_n$ are dependent across both rows and columns. More precisely, they consist of short or long range dependent random
Banna, Marwa
core   +1 more source

The «catalogo della cooperazione»: the road for a relaunch of the National library service

open access: yesBibliothecae.it, 2016
The meeting for the thirty-year anniversary of Servizio bibliotecario nazionale (SBN) was held on April 1st in the National Central Library of Rome. Several aspects of the major Italian network of libraries were discussed in the seminar; the article ...
Simona Turbanti
doaj   +1 more source

Counterpropagating dipole-mode vector soliton

open access: yes, 2005
We experimentally observe a counterpropagating dipole-mode vector soliton in a photorefractive SBN:60Ce crystal. We investigate the transient formation dynamics and show that the formation process differs significantly from the copropagating geometry ...
Belic   +17 more
core   +3 more sources

Soluções Baseadas na Natureza (SbN)

open access: yesLabor e Engenho
O cenário mundial tem confirmado as previsões climáticas que previam a intensificação de desafios que assolam a humanidade e a biodiversidade, em simultâneo, como eventos climáticos extremos e segurança alimentar. Ao longo do tempo, a humanidade aprendeu a desenvolver e utilizar tecnologias que permitiram superar dificuldades e ameaças ao crescimento e
Lucas Augusto Ramos   +1 more
openaire   +2 more sources

Caracterização estrutural, propriedades dielétricas e ferroelétricas de filmes finos de Estrôncio-Bário-Nióbio (SBN)

open access: yesCerâmica, 2001
Filmes finos de niobato de estrôncio e bário (SBN) na composição 75/25 (Sr0,75Ba0,25Nb2O 6) foram depositados sobre substratos de Pt/Si usando-se um método químico baseado na obtenção de uma resina polimérica a partir de diferentes soluções de íons.
R. G. Mendes, E. B. Araújo, J. A. Eiras
doaj   +1 more source

Swiftlet Bird's Nest (Collocalia fuciphaga) from West Sumatra as a Functional Food and Its Nutritional Content

open access: yesAndalasian Livestock
Functional foods contain biologically active components and compounds that have physiological effects on the human body, such as promoting health and decreasing the risk of sickness.
Aditya Willy Putra   +2 more
doaj   +1 more source

Hume's Legacy: A Cognitive Science Perspective [PDF]

open access: yes, 2018
Hume is an experimental philosopher who attempts to understand why we think, feel, and act as we do. But how should we evaluate the adequacy of his proposals?
Collier, Mark
core  

Structural characterization and ferroelectric properties of strontium barium niobate (Sr xBa1-xNb2O6) thin films

open access: yesMaterials Research, 2001
Strontium barium niobate (SBN) thin films of good quality were deposited on Pt/Ti/SiO2/Si substrate using a polymeric resin containing metallic ions. Films were crystallized at different temperatures and for different duration of time.
R.G. Mendes, E.B. Araújo, J.A. Eiras
doaj   +1 more source

Order-of-magnitude reduction of the photorefractive response time in rhodium-doped Sr0.6Ba0.4Nb2O6 with a dc electric field [PDF]

open access: yes, 1990
We present what is to our knowledge the first report on the photorefractive properties of Rh-doped Sr0.6Ba0.4Nb2O6 and experimental results showing a reduction of the photorefractive two-beam coupling response time by more than an order of magnitude with
Neurgaonkar, Ratnakar R.   +2 more
core  

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