Universidade do Estado de Minas Gerais

Effects of alkaline hydrothermal extraction on the molecular organization and antioxidant activity of humic substances derived from sugarcane straw hydrochar

Hydrothermal humic acids (HHA) have attracted attention due to their redox-active properties and potential for lignocellulosic waste valorization. However, the effects of alkaline hydrothermal extraction temperature on their molecular organization and antioxidant activity remain...

Intermediate proportions of composted sewage sludge improve Cedrela fissilis seedling growth and quality

Abstract Substrate composition and irrigation management influence forest seedling quality, but the proportion of composted sewage sludge (CSS) suitable for Cedrela fissilis remains unclear. We evaluated seedlings grown in five substrate formulations containing 0, 25, 50, 75, or...

Anthropogenic disturbance drives compositional and structural shifts in cerrado stream fish assemblages

Abstract Currently, one of the main threats to freshwater ecosystems is the conversion of natural areas into croplands, pastures, and urban landscapes. Therefore, understanding how fish assemblages respond to gradients of land use related anthropogenic disturbance is essential. T...

Phosphate and Carbonate in the Biomineralization of Chicken Eggshells and the Increase in Eggshell Thickness Through Nanodroplet Addition

The presence of hydroxyapatite (HAp) in the Cuticle of laying-hen eggshells was investigated through a comprehensive characterization of its morphology, composition, crystallographic structure, and thermal behavior. Comparison with bone-derived hydroxyapatite confirmed the simila...

Supply-chain risks and resilience mechanisms relevant to military aviation: a systematic review of defense and aerospace literature

Purpose This study synthesizes defense and aerospace supply-chain literature to identify and organize risks and resilience mechanisms relevant to the industrial, maintenance, and sustainment systems supporting military aviation, with particular attention to aircraft availability...

Cognitive Effort as a Compensatory Mechanism for Motor Control in Impulsivity

Impulsivity, although commonly associated with maladaptive behavior, can influence how individuals manage cognitive and motor demands. This study analyzed the effect of impulsivity on motor control and cognitive effort during manual aiming tasks that varied in cognitive load. Fro...

DPASV detection of metribuzin using the cathodic pretreated boron-doped diamond electrode

Abstract The widespread use of the triazinone herbicide metribuzin (MTZ) demands reliable, rapid, and cost-effective analytical methods for environmental monitoring. In this work, we report, for the first time, the electroanalytical determination of MTZ based on its anodic behavi...