Zobrazeno 1 - 10
of 91
pro vyhledávání: '"João Carlos de Andrade"'
Publikováno v:
Antíteses, Vol 5, Iss 10, Pp 567-587 (2012)
The article examines, from a game of voices, gestures and body movements during a tour of students from Educação de Jovens e Adultos (EJA) to Museu de Artes e Ofícios de Belo Horizonte, senses there statements about the past issues pertaining to t
Externí odkaz:
https://doaj.org/article/086f7397f3dc468891804c07e0116ffe
Publikováno v:
Química Nova, Vol 34, Iss 10, Pp 1818-1824 (2011)
The purpose of this paper is to present a classification criterion for general chemistry experiments departing from a survey of 35 years of the experimental general chemistry discipline at the Chemistry Institute - UNICAMP. It is shown that by consid
Externí odkaz:
https://doaj.org/article/b8f5bef4628a481eb1a616f0fcf9b1e6
Publikováno v:
Química Nova, Vol 31, Iss 3, Pp 700-703 (2008)
Diffuse reflectance near-infrared (DR-NIR) spectroscopy associated with partial least squares (PLS) multivariate calibration is proposed for a direct, non-destructive, determination of total nitrogen in wheat leaves. The procedure was developed for a
Externí odkaz:
https://doaj.org/article/76a6d4804c0743f59af5fad9640c69fc
Publikováno v:
Química Nova, Vol 29, Iss 1, Pp 168-172 (2006)
The results of a survey of institutions offering undergraduate studies, with the objective of evaluating the importance of Qualitative Analytical Chemistry for Chemistry courses in Brazil, are presented and discussed. Judging by the data, the content
Externí odkaz:
https://doaj.org/article/3d10b14b0181490d86f226a0a5b939b7
Publikováno v:
Química Nova, Vol 28, Iss 6, Pp 1116-1122 (2005)
This work illustrates the modeling procedure for a solvent mixture using the simplex- centroid approach. The selected experiment was the optimization of the peak current observed in the direct determination of nickel by anodic stripping voltammetry (
Externí odkaz:
https://doaj.org/article/300850cfb8744a4a966c5ece74c626ff
Publikováno v:
Química Nova, Vol 22, Iss 2, Pp 189-193 (1999)
Externí odkaz:
https://doaj.org/article/548fb9ec240d4ddb87ce23223f07b1e5
Publikováno v:
Química Nova, Vol 29, Iss 1, Pp 153-155 (2006)
Externí odkaz:
https://doaj.org/article/d3bffc06b6834713a0f5d7e3fada868b
Publikováno v:
Química Nova, Vol 20, Iss 2, Pp 219-225 (1997)
The least square method is analyzed. The basic aspects of the method are discussed. Emphasis is given in procedures that allow a simple memorization of the basic equations associated with the linear and non linear least square method, polinomial regr
Externí odkaz:
https://doaj.org/article/420b30a4d21c438986462eaa673d64c6
Publikováno v:
Antíteses, Vol 5, Iss 10 (2013)
O artigo analisa, a partir de um jogo de vozes, gestos e de deslocamentos corporais, durante uma visita guiada de alunos da Educação de Jovens e Adultos (EJA) ao Museu de Artes e Ofícios de Belo Horizonte, sentidos do passado ali enunciados sobre
Externí odkaz:
https://doaj.org/article/4fbc658f4dec4567b4e7f8a24edab1ad
Publikováno v:
Biblioteca Digital de Teses e Dissertações da USPUniversidade de São PauloUSP.
This work provides a full description of the critical behavior of the XX spin-1/2 chain under correlated quenched disorder. Previous investigations have shown that the introduction of correlation between couplings in the random XX model gives rise to