Based on a bibliographic review, the article identifies and offers a critical analysis of scientific production by the public health field in Brazil on genetically modified organisms and food (in)security. Of the 716 articles found on the portals of the Scientific Electronic Library Online (SciELO) and the Coordinating Agency for the Development of Higher Education (Capes), only 8 address the f...

This paper presents an estimation of the adsorptive potential multiwalled carbon nanotubes (MWCNTs) and modified poly (acrylonitrile-co-styrene) with activated for uptake reactive red 35 (RR35) dye from aqueous solution by a batch system. MWCNT adsorbent was synthesized encapsulation via in situ polymerization. The copolymer material (acrylonitrile-styrene) P (AN-co-ST) prepared ratio 2:1 V/V p...

Environmentally friendly copper oxide nanoparticles (CuO NPs) were prepared with a green synthesis route via Anchusa strigosa L. Flowers extract. These further characterized by FTIR, XRD and SEM techniques. Removing of Gongo red from water was applied successfully using synthesized CuO NPs which used as an adsorbent material. It validated that the eliminate Congo means adsorption, best efficien...

Public opposition to genetically modified organisms (GMOs) remains strong. By contrast, studies demonstrate again and again that GM crops make a valuable contribution to the development of a sustainable type of agriculture. The discrepancy between public opinion and the scientific evidence requires an explanation. We argue that intuitive expectations about the world render the human mind vulner...

A method is suggested for the computation of the generalized dimensions of fractal attractors at the period-doubling transition to chaos. The approach is based on an eigenvalue problem formulated in terms of functional equations, with a coefficient expressed in terms of Feigenbaum’s universal fixed-point function. The accuracy of the results is determined only by precision of the representation...

Extensive confusion exists and persists in the literature on dynamical systems theory, cosmology and other fields over spectra of fractal dimensions. Entirely different generating functions have been treated as if they should yield identical spectra, or scaling exponents. An uncritical implicit assumption of universality of scaling exponents is made, even though there is no good theoretical rea...

Thermodynamic adsorption properties (differential enthalpy and entropy, spreading pressure and net integral enthalpy and entropy) of cassava flour were determined at 25, 30 and 35°C to provide information about the water and energy requirements for the sorption process. The Guggenheim–Anderson–de Boer (GAB), Peleg and Halsey models were found to adequately describe the sorption characteristics,...