Symmetric Filters
Mostrando 1-3 de 3 artigos, teses e dissertações.
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1. SÍNTESE MECANOQUÍMICA DE AZINAS ACÍCLICAS SIMÉTRICAS E DETERMINAÇÃO DO FATOR DE PROTEÇÃO SOLAR UVB IN VITRO
Skin cancer is a frequent neoplasm in Brazil and this, is observed the importance of the development of new sunscreens using simple methodologies capable of reducing production costs. In this context, six symmetric acyclic azines were synthesized and characterized, with reaction yields between 54 and 84%, short reaction times (5 to 10 min), and manual grindi
Quím. Nova. Publicado em: 02/05/2019
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2. OPTIMAL FILTERS THAT PRESERVE EVERY TREND ORDER / FILTROS ÓTIMOS QUE CONSERVAM QUALQUER ORDEM DE TENDÊNCIA
The thesis Filtros ótimos que conservam qualquer ordem de tendência (Optimal Filters that Preserve Trend of Any Order), investigates the principles of the Henderson symmetric filters, which are inserted in the context of seasonal adjustment, specifically in the methods of the X11 family; it also develops optimal filters, based on techniques in the Frequenc
Publicado em: 2008
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3. Filtros de spin não-magneticos controlados por voltagem / Voltage controlled non-magnetic spin filters
The aim of this work was to study the transport properties of nonmagnetic semiconductor heterostructures: double barrier diodes ? DBD. Our attention was focused on the carrier spin polarization through the structure. First we present the phenomenology behind the carrier transport and how the DBD can act as a spin filter. In the sequence, we present the exper
Publicado em: 2006