Dimensionamento de espessadores: validação experimental de três técnicas convencionais

This work reviews the fundamentals of three important techniques currently used to dimension thickeners: Flux of Solids, Talmadge-Fitch, and Roberts. They were applied to validate the calculation of diameter (D) and sedimentation area (A) of a real thickener, which clarifies brine in a plant located at Cubatao-SP. The calculation of thickener dimension (A and D) was based on the sedimentation behavior of salt particles in brine on a laboratory scale. The values of D and A (D=13,9-14,1m; A=151,7-156,1m(2)), which were calculated by the three techniques, were compared with the diameter of the real equipment (D=20,0m). On the other hand, corrected values of D and A (D=18,1-18,3m; A=257, 0-263, 0m(2)) were obtained by using a scale factor (f=1,3). These results are 10% lower than the real equipment.

Nursing care time in the Intensive Care Unit: evaluation of the parameters proposed in COFEN Resolution N degrees 293/04

This study aimed to evaluate the parameters established in COFEN Resolution 293/04 concerning nursing staff dimensioning in adult intensive care units (AICU). The research was conducted in six hospitals in Sao Paulo City. The daily quantitative average of professionals needed for patient care was calculated according to the parameters established by COFEN. The obtained results were compared with the existing number of daily staff members in these units. It was observed that the proportions recommended by COFEN for the nurse category are superior to those used in the hospitals studied, which represents a challenge for Brazilian nursing. Mean care time values were found appropriate and represent important standards for dimensioning the minimum number of professionals in AICU. This study contributed to the validation of the parameters indicated in Resolution 293/04 for nursing staff dimensioning in the AICU.

Nursing care time in the Intensive Care Unit: evaluation of the parameters proposed in COFEN Resolution Nº 293/04

This study aimed to evaluate the parameters established in COFEN Resolution 293/04 concerning nursing staff dimensioning in adult intensive care units (AICU). The research was conducted in six hospitals in São Paulo City. The daily quantitative average of professionals needed for patient care was calculated according to the parameters established by COFEN. The obtained results were compared with the existing number of daily staff members in these units. It was observed that the proportions recommended by COFEN for the nurse category are superior to those used in the hospitals studied, which represents a challenge for Brazilian nursing. Mean care time values were found appropriate and represent important standards for dimensioning the minimum number of professionals in AICU. This study contributed to the validation of the parameters indicated in Resolution 293/04 for nursing staff dimensioning in the AICU.