High-loaded tidal flow constructed wetlands coupled with microbial fuel cells: effects of the vegetation and filling material size.

The sanitation resource recovery is a contemporary strategy fully in line with the concept of the circular economy. The by-products from constructed wetlands technology include treated water, nutrients, biomass and energy. The aim of the present study was to evaluate the sewage treatment and resources recovery in constructed wetlands operating in a tidal flow configuration, coupled with microbial fuel cells (MFC).

Microalgae biomass as a conditioner and regulator of soil quality and fertility.

Characteristics of an acid soil cultivated with Urochloa brizantha cv. Marandu were evaluated in relation to two types of fertilization: a conventional one, chemical based on nitrogen and potassium, and a biofertilizer, based on microalgae biomass. The results were compared among three treatments, control, conventional, and biological fertilization, with seven replications each.

Evaluation of high rate ponds operational and design strategies for algal biomass production and domestic wastewater treatment.

This study evaluated the effect of high rate ponds (HRPs) depth on algal biomass production during domestic wastewater treatment. HRPs were evaluated for 20, 30, and 40 cm depths, with and without CO supplementation. In addition, 40 cm deep HRP with ultraviolet (UV) pre-disinfection was evaluated.

Microalgae biofilm in soil: Greenhouse gas emissions, ammonia volatilization and plant growth.

Microalgal biofilm in soils represents an alternative fertilization method for agricultural sustainability. In the present study, greenhouse gas emission, soil ammonia volatilization, and the growth of Pennisetum glaucum were evaluated under the effect of a microalgal biofilm, commercial urea, and a control (without application of a nitrogen source). CH emissions were equal for the three treatments (p>0.

Body fat equations and electrical bioimpedance values in prediction of cardiovascular risk factors in eutrophic and overweight adolescents.

The aim of this study was to analyze body fat anthropometric equations and electrical bioimpedance analysis (BIA) in the prediction of cardiovascular risk factors in eutrophic and overweight adolescents. 210 adolescents were divided into eutrophic group (G1) and overweight group (G2). The percentage of body fat (% BF) was estimated using 10 body fat anthropometric equations and 2 BIA.

[The influence of sociosanitary conditions on the quality of life of the elderly in a municipality in the Southeast of Brazil].

This study sought to evaluate sociosanitary conditions and their impact on the quality of life of the elderly living in the Teixeiras Municipality in the Southeast Region (MG) of Brazil. Two questionnaires were used: one created specifically to characterize the population in terms of sociosanitary conditions, and WHOQOL-bref, to evaluate quality of life. The correlation between the sociosanitary conditions and quality of life scores were analyzed by logistic regression analysis.

Effects of soy isoflavones on the uterus and urethra of ovariectomized rats.

Objective: To evaluate the effect of soy isoflavone extract (SIE) on the uterus and urethra of castrated female rats.

Methods: Ovariectomized adult virgin Wistar rats (n = 45) received, for 30 days: placebo (GI); SIE from day 5 of castration (GII); or day 28 of castration (GIII). A standardized SIE was administered by gavage at 125 microg genistein/g body weight/day, with a soy-free diet.