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The use of post-consumer materials is directly related to reducing the cost of production and extraction of natural resources. Non-recyclable materials are randomly disposed in the environment. Brazil is one of the largest consumers of PET (polyethylene terephthalate) bottles. The purpose of this paper is to describe the opportunities and challenges of the logistics model for post-consumer PET bottle...
Photoacoustic spectroscopy (PAS) was applied as a method to quantify dyed food samples, and was compared with First Derivative Spectrophotometry (FDS). The dyes Brilliant Blue (B), Sunset Yellow (S) and Tartrazine (T), which are common food additives, were employed for the comparisons. Polyester-type Polyurethane (PU) foam was used for extraction of the dyes from a solution containing the food matrix...
Background The ectodermal dysplasias are a large and complex group of diseases. Case presentation This article presents a case in a 37 years old female patient, referred to the dental clinic for impairment patients maintained by the University of Pernambuco. She presented typical characteristics of Christ Siemens Touraine syndrome such as alterations of the inferior members, a great number of diffuse...
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