Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Araújo Mário César Ugulino de"'
Estudo comparativo sobre filtragem de sinais instrumentais usando transformadas de Fourier e Wavelet
Autor:
Galvão Roberto Kawakami Harrop, Araújo Mário César Ugulino de, Saldanha Teresa Cristina Bezerra, Visani Valeria, Pimentel Maria Fernanda
Publikováno v:
Química Nova, Vol 24, Iss 6, Pp 874-884 (2001)
A comparative study of the Fourier (FT) and the wavelet transforms (WT) for instrumental signal denoising is presented. The basic principles of wavelet theory are described in a succinct and simplified manner. For illustration, FT and WT are used to
Externí odkaz:
https://doaj.org/article/32cba7f49c0d4f5b90ab3da55514e8aa
Autor:
Freitas, Sueny Kêlia Barbosa, Nascimento, Elaine Cristina Lima do, Dionízio, Amália Geiza Gama, Gomes, Adriano de Araújo, Araújo, Mário César Ugulino de, Galvão, Roberto Kawakami Harrop
Publikováno v:
In Talanta 30 March 2013 107:45-48
Autor:
Gaião,Edvaldo da Nóbrega, Medeiros,Everaldo Paulo de, Lyra,Wellington da Silva, Moreira,Pablo Nogueira Teles, Silva,Edvan Cirino da, Araújo,Mário César Ugulino de
Publikováno v:
Química Nova, Volume: 27, Issue: 5, Pages: 825-828, Published: OCT 2004
Química Nova v.27 n.5 2004
Química Nova
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Química Nova v.27 n.5 2004
Química Nova
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
A lab-made interface for acquisition of instrumental analog signals between 0 and 5 V at a frequency up to 670 kHz at the parallel port of a microcomputer is described. Since it uses few and small components, it was built into the connector of a prin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::5fc9d4a5c36ecdb48539244139a15f8b
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422004000500024&lng=en&tlng=en
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422004000500024&lng=en&tlng=en
Publikováno v:
Analyst; January 31, 2002, Vol. 127 Issue: 2 p324-327, 4p
Publikováno v:
Biblioteca Digital de Teses e Dissertações da UFPB
Universidade Federal da Paraíba (UFPB)
instacron:UFPB
Universidade Federal da Paraíba (UFPB)
instacron:UFPB
Parabens are esters derived from 4-hydroxybenzoic acid such as methylparaben (MeP), ethylparaben (EtP), propylparaben (PrP), butylparaben (BuP) and benzylparaben (BzP). They are chemical preservatives widely used in cosmetics, pharmaceuticals and foo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3056::f32aa048d4ea8f2535eec4e176ba2777
https://repositorio.ufpb.br/jspui/handle/123456789/24928
https://repositorio.ufpb.br/jspui/handle/123456789/24928
Autor:
Silva, Suelly Fernandes da
Publikováno v:
Biblioteca Digital de Teses e Dissertações da UFPB
Universidade Federal da Paraíba (UFPB)
instacron:UFPB
Universidade Federal da Paraíba (UFPB)
instacron:UFPB
Insulin is a hormone produced by the pancreas and is necessary for the use of glucose (sugar) by the body as an energy source. When the pancreas does not produce enough insulin to control blood sugar, diabetes occurs. The treatment of diabetes can be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3056::0aa8cf7e8c739552a7dc6d50823cda15
https://repositorio.ufpb.br/jspui/handle/123456789/20682
https://repositorio.ufpb.br/jspui/handle/123456789/20682
Autor:
Lourenço, Anabel Santos
Publikováno v:
Biblioteca Digital de Teses e Dissertações da UFPB
Universidade Federal da Paraíba (UFPB)
instacron:UFPB
Universidade Federal da Paraíba (UFPB)
instacron:UFPB
The need to study and quantify constituents present in numerous matrices justifies the development of analytical methods and the use of chemically modified electrodes with redox mediators. The use of these sensors allows studies with species of great
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3056::290054c86bbf1d7eebf6ab0bfd610696
https://repositorio.ufpb.br/jspui/handle/123456789/18534
https://repositorio.ufpb.br/jspui/handle/123456789/18534
Autor:
Sousa, Emanuella Santos
Publikováno v:
Biblioteca Digital de Teses e Dissertações da UFPB
Universidade Federal da Paraíba (UFPB)
instacron:UFPB
Universidade Federal da Paraíba (UFPB)
instacron:UFPB
Pesticides are substances capable of controlling the spread of pests, increasing the cultivation, production and supply of food. For this reason, they are among the emerging pollutant classes of concern most investigated in the environment, as they c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3056::88cd040aae0ace9f3cc251f1a4ff4a88
https://repositorio.ufpb.br/jspui/handle/123456789/18227
https://repositorio.ufpb.br/jspui/handle/123456789/18227
Publikováno v:
Biblioteca Digital de Teses e Dissertações da UFPB
Universidade Federal da Paraíba (UFPB)
instacron:UFPB
Universidade Federal da Paraíba (UFPB)
instacron:UFPB
The honeybee is the third most adulterated food product in the world. In Brazil, this abundant and diversified spice has often been frauded or adulterated. Therefore, it is necessary the analysis for quality determination of this product. In this wor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3056::753b7d8a720ce249ae481b1be1aa24b0
https://repositorio.ufpb.br/jspui/handle/123456789/19088
https://repositorio.ufpb.br/jspui/handle/123456789/19088
Publikováno v:
Biblioteca Digital de Teses e Dissertações da UFPB
Universidade Federal da Paraíba (UFPB)
instacron:UFPB
Universidade Federal da Paraíba (UFPB)
instacron:UFPB
This work presents a fast, simple, one-step, and low-cost approach to the preparation of fluorescent nitrogen and sulfur co-doped carbon dots (NSCDs) through heating biomass from the lemon and onion mixture, through a domestic microwave oven for only
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3056::21a5bb1e5e053ab8135facabd63755f3
https://repositorio.ufpb.br/jspui/handle/123456789/17052
https://repositorio.ufpb.br/jspui/handle/123456789/17052