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1.
Acta sci., Health sci ; 43: e54996, Feb.11, 2021.
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1368149

RESUMO

To evaluate the nutritional profile of cancer patients treated at an oncology center in South Brazil.This is a descriptive, exploratory and sectional study that was developed in a process that involved 100 patients aged between 18 and 75 years old, suffering from cancer.The anthropometric variables studied were weight, height, Body Mass Index (BMI), arm circumference (AC), arm muscle circumference (AMC),triceps skinfold (TSF) and corrected arm muscle area (cAMA). For subjective nutritional assessment, we used the Patient-Generated Subjective Global Assessment (PG-SGA). Nearly half of the patients evaluated had a critical need for nutritional intervention. There was a statistically significant association between cAMA and marital status, age and gender; between AC and age, gender and staging; between AMC and staging; between BMI and marital status and age; and between TSF and marital status. Patients diagnosed with IV stage had the lowest values for nutritional variables. There was no significant association between nutritional status of patients obtained by the PG-SGA instrument and sociodemographic characteristics. Malnutrition should be diagnosed as soon as possible,aiming at early intervention and improving survival and quality of life. Therefore, early nutritional assessment in cancer patients is required, combining subjective and objective methods.

2.
Nutr Cancer ; 73(2): 221-229, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-32286094

RESUMO

Among the methods used in the nutritional assessment of cancer patients, handgrip strength (HGS), an important indicator of malnutrition, was chosen in this study. An observational cross-sectional study with the prospective collection. We analyzed 100 patients from the Oncology Department of Santa Rita Hospital, in Maringá city, Paraná, Brazil. To determine the clinical-pathological staging was used the Cancer Staging Manual. In the objective nutritional assessment, data to calculate Body Mass Index (BMI), arm muscle circumference (AMC), corrected arm muscle area (cAMA) and measurement of HGS were measured. In connection with the subjective method used, a Patient-Generated Subjective Global Assessment (PG-SGA) has been selected. Arm Circumference (AC) presents a significant association with the left hand HGS classification. The right hand HGS does not show a significant correlation with the analyzed variables. However, the results showed that patients with higher left hand HGS tend to present lower PG-SGA and higher AMC. HGS, as a predictor of nutritional vulnerability, has proved superiority for predicting clinical results in cancer patients. However, it requires more studies that investigate other nutritional variables to determine the nutritional risk in this population.


Assuntos
Desnutrição , Neoplasias , Índice de Massa Corporal , Estudos Transversais , Força da Mão , Humanos , Desnutrição/etiologia , Avaliação Nutricional , Estado Nutricional , Estudos Prospectivos
3.
Braz. arch. biol. technol ; 54(1): 197-206, Jan.-Feb. 2011. ilus, graf, tab
Artigo em Inglês | LILACS-Express | LILACS | ID: lil-576775

RESUMO

An industrial system for the production of white liquor of a pulp and paper industry, Klabin Paraná Papéis, formed by ten reactors was modeled, simulated, and analyzed. The developed model considered possible water losses by the evaporation and reaction, in addition to variations in the volumetric flow of lime mud across the reactors due to the composition variations. The model predictions agreed well with the process measurements at the plant and the results showed that the slaking reaction was nearly complete at the third causticizing reactor, while causticizing ends by the seventh reactor. Water loss due to slaking reaction and evaporation occurred more pronouncedly in the slaker reactor than in the final causticizing reactors; nevertheless, the lime mud flow remained nearly constant across the reactors.

4.
Braz. arch. biol. technol ; 50(2): 339-347, Mar. 2007. ilus, tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: lil-452750

RESUMO

A dynamic model of the slaker reactor was developed and validated for Klabin Paraná Papéis causticizing system, responsable for white liquor generation used by the plant. The model considered water losses by evaporation and chemical reaction. The model showed a good agreement with the industrial plant measures of active alkali, total titratable alkali and temperature, without the need of adjustment of any parameter. The simulated results showed that the water consumption by the slaking reaction and evaporation exerted significant influence on the volumetric flow rate of limed liquor, which imposed a decrease of 4.6 percent in the amount of water in reactor outlet.


Foi desenvolvido e testado um modelo dinâmico do reator de apagamento do sistema de caustificação da Klabin Paraná Papéis, responsável pela geração do licor branco utilizado na planta. O modelo contempla perdas de água por evaporação e por reação química e apresentou boa concordância com dados industriais de álcali ativo, álcali total titulável e temperatura, sem a necessidade de ajuste de nenhum parâmetro. Os resultados obtidos a partir de simulações revelam que o consumo de água pela reação de apagamento, bem como pela evaporação, exercem uma influência significativa sobre a vazão volumétrica na saída do reator, impondo uma diminuição de 4,6 por cento sobre o teor de água na corrente de saída do reator em relação à alimentação.

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