Cleydson Breno R. Santos

Environmental Conception of Students of the 3rd Grade of High School on the Theme Water: A Case Study in the City of Calçoene-AP-Brazil

Cleydson Breno R. Santos, Rafaela de M. Guimarães, Nelma D. de Almeida, Francinaldo S. Braga, Luanny Maria A. Vidal & Josivan da S. Costa · Journal of Education, Society and Behavioural Science · 2015

Aims: To assess 50 students of the third grade of high school in a state school of the city of Calçoene-Amapá-Brazil on the concepts physico-chemical and biological characteristcs of water and environmental conception of the students on the subject. Place and Duration of Study: T...

Open access Research Article 10.9734/BJESBS/2015/16034

Determination of Trace-metals in Sediments and Plants on Canal of Jandiá and Igarape of Fortaleza in Macapá-AP-Brazil

Karoline de N. R. dos Santos, Cleydson Breno R. Santos, Adriana M. Ferreira, Francinaldo S. Braga, Cleison C. Lobato, Alexandro C. Florentino, José Carlos T. Carvalho & Roberto M. Bezerra · Chemical Science International Journal · 2014

Aims: Determine the concentration of trace-metals (Na, K, Mg, Ca, Pb and Zn) in sediments and plant Cenchrus echinatus L. species on Canal of Jandiá and Igarape of Fortaleza in the municipality of Macapa, Amapa, Brazil. Study Design: The sediment samples were collected (0.3kg) at...

Open access Research Article 10.9734/ACSJ/2014/10589

Physicochemical Characterization of Water Quality - Lagoa dos Índios in Macapá, Brazil

Josivan S. Costa, Francinaldo S. Braga, Sheylla Susan M. S. Almeida, Ryan S. Ramos, Daímio C. Brito, Alan C. Cunha & Cleydson Breno R. Santos · Chemical Science International Journal · 2014

Aims: To characterize relevant physicochemical parameters of water quality in an Amazonian tropical lake and compare them with the reference values of the Brazilian Resolution CONAMA 357/2005 and those recommended by the similar US-EPA law. In addition, to correlate statistically...

Open access Research Article 10.9734/ACSJ/2015/11705