ABSTRACT Owing to numerous health benefits, the cultivation of medicinal plants has significantly increased. Achillea millefolium L. (common names: milefoil, yarrow) is attributed important medicinal properties. Consumers of herbal medicinal products demand for production systems based on ecological farming principles, thus an interesting technology would be application biostimulant based on humic acids. The objective of this study was to evaluate the rooting and initial performance of Achillea millefolium in response to the use of humic acids (HA) isolated from composted cattle manure and poultry litter and applied in different concentrations (0, 10, 20, 30, and 40 mmolL-1 of HA) at the propagation phase. Rooting and plant biomass accumulation were analyzed. Humic acids derived from poultry litter promoted root development and increase of fresh biomass and total dry mass, proving their biostimulant effect. The optimal concentration of humic acids estimated for the initial development of A. millefolium was 22.25 mmolL-1.

RESUMO Os catadores de materiais recicláveis realizam atividades fisicamente pesadas e em condições precárias, o que torna importante garantir uma alimentação adequada. Assim, este estudo avaliou as condições alimentares desses trabalhadores, em Piraquara, Paraná. A pesquisa foi realizada com base no Sistema de Vigilância Alimentar e Nutricional (SISVAN) e na Escala Brasileira de Insegurança Alimentar. Foram identificados e entrevistados 56 catadores. A maioria (68%) gastava mais da metade da renda com a aquisição de alimentos, mas 29% relataram passar fome, sendo 13% todos os dias. Ao analisar a frequência alimentar, observou-se alta ingestão de feijão (94%) e arroz (92%), baixa ingestão de frutas, legumes e verduras (16%) e consumo regular de refrigerantes (20%). Essa situação demonstra que é preciso garantir o direito a uma alimentação adequada a esses trabalhadores.

ABSTRACT The solid waste segregators of recyclable materials perform their hard work in poor conditions, what make important to assure an adequate diet. So, this study evaluated the feeding conditions of these workers in Piraquara, Paraná. The research was developed based on System for Food and Nutrition Surveillance (SISVAN) and Brazilian Food Insecurity Scale. Fifty-six workers were identified and interviewed. The majority (68%) spent more than half of their income on food purchases, but 29% reported going hungry, being 13% every day. When food intake frequency was analyzed, there was a high intake of beans (94%) and rice (92%), low intake of fruits and vegetables (16%) and regular consumption of soft drinks (20%). This shows that it is necessary to guarantee the right to adequate food among these workers.

ABSTRACT The solid waste segregators of recyclable materials perform their hard work in poor conditions, what make important to assure an adequate diet. So, this study evaluated the feeding conditions of these workers in Piraquara, Paraná. The research was developed based on System for Food and Nutrition Surveillance (SISVAN) and Brazilian Food Insecurity Scale. Fifty-six workers were identified and interviewed. The majority (68%) spent more than half of their income on food purchases, but 29% reported going hungry, being 13% every day. When food intake frequency was analyzed, there was a high intake of beans (94%) and rice (92%), low intake of fruits and vegetables (16%) and regular consumption of soft drinks (20%). This shows that it is necessary to guarantee the right to adequate food among these workers.

RESUMO Os catadores de materiais recicláveis realizam atividades fisicamente pesadas e em condições precárias, o que torna importante garantir uma alimentação adequada. Assim, este estudo avaliou as condições alimentares desses trabalhadores, em Piraquara, Paraná. A pesquisa foi realizada com base no Sistema de Vigilância Alimentar e Nutricional (SISVAN) e na Escala Brasileira de Insegurança Alimentar. Foram identificados e entrevistados 56 catadores. A maioria (68%) gastava mais da metade da renda com a aquisição de alimentos, mas 29% relataram passar fome, sendo 13% todos os dias. Ao analisar a frequência alimentar, observou-se alta ingestão de feijão (94%) e arroz (92%), baixa ingestão de frutas, legumes e verduras (16%) e consumo regular de refrigerantes (20%). Essa situação demonstra que é preciso garantir o direito a uma alimentação adequada a esses trabalhadores.

Dados de equilíbrio p-V-t isotérmicos são coletados para o ar de 23 ºC a 60 ºC na faixa de pressão de 1,04 atm até 1,73 atm. O equipamento experimental consiste de uma célula que é termostatizada por um banho. Os resultados permitem verificar as leis de Boyle-Mariotte e Gay-Lussac, tão bem quanto a equação dos gases ideais.

Experimental data (pressure-temperature-volume) at the fixed temperature were measured for air in low pressures. The experimental apparatus was an equilibrium cell equipped with an isothermal water bath. The range of temperature was 23 ºC to 60 ºC and for the pressure, 1.04 atm up to 1.73 atm. The results permitted to check some lays found in the literature, such as: Boyle-Marriotte and Gay-Lussac, as well as the ideal gas equation.