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MODEL-PARAMETER ESTIMATION USING LEAST-SQUARES
(PERGAMON-ELSEVIER SCIENCE LTD, 1992)
The use of the least-squares techniques for parameter estimation is critically evaluated by analyzing linear and non-linear models for situations in which the absolute or relative errors had a constant variance. Special ...
Comparison of the efficacy of biodegradable and non-biodegradable scintillation liquids on the counting of tritium- and [14C]-labeled compounds
(Associação Brasileira de Divulgação Científica, 2003-12-01)
The widespread use of ³H and 14C in research has generated a large volume of waste mixed with scintillation liquid, requiring an effective control and appropriate storage of liquid radioactive waste. In the present study, ...
Biodegradability and plasticizing effect of yerba mate extract on cassava starch edible films
(Elsevier, 2016-10)
Biodegradable and edible cassava starch-glycerol based films with different concentrations of yerba mate extract (0, 5 and 20 wt.%) were prepared by casting. The plasticizing effect of yerba mate extract when it was ...
Polímeros biodegradáveis - uma solução parcial para diminuir a quantidade dos resíduos plásticos
(Sociedade Brasileira de Química, 2006-07-01)
The large use of plastics has generated a waste deposit problem. Today plastic wastes represent 20% in volume of the total waste in the municipal landfills. To solve the disposal problem of plastics methods have been ...
Elaboración de polímeros biodegradables polietileno-almidón y estudio de biodegradabilidad
(2011-01-20)
RESUMEN: El incremento mundial en el consumo de plásticos remarca la necesidad de tener plásticos biodegradables. Sin embargo, la disponibilidad de éstos es limitada y restringida para usos específicos debido a sus pobres ...
Biodegradation pattern of hydrocarbons from a fuel oil-type complex residue by an emulsifier-producing microbial consortium
(Elsevier Science, 2008-06)
The biodegradation of a hazardous waste (bilge waste), a fuel oil-type complex residue from normal ship operations, was studied in a batch bioreactor using a microbial consortium in seawater medium. Experiments with initial ...
Comparative thermal degradation of biodegradable and oxo-degradable polymeric blends used in shopping bags in Brazil Close
(2013)
In the present study, a blend of poly(butylene adipate-co-terephtalate) –
PBAT and poly(lactic acid) – PLA used for biodegradable shopping plastic bags
was investigated, together with control samples of polyethylene ...
Biodegradation of polyurethane derived from castor oil
(Associação Brasileira de Polímeros, 2008-09-01)
The aim of this research was to study the biodegradation of a polymer derived from castor oil, which is a renewable, natural material that is a practical alternative for the replacement of traditional polyurethane foams. ...
Biodegradation of polyurethane derived from castor oil
(Associação Brasileira de Polímeros, 2008-09-01)
The aim of this research was to study the biodegradation of a polymer derived from castor oil, which is a renewable, natural material that is a practical alternative for the replacement of traditional polyurethane foams. ...