Universidade Federal de Pernambuco

Removal of linear alkylbenzene sulfonate by anaerobic and aerobic reactors treating domestic sewage

This study evaluated the removal and behavior of linear alkylbenzene sulfonate (LAS) in pilot-scale integrated anaerobic–aerobic wastewater treatment systems, which were tested at different effluent recirculation rates (0%, 50%, and 100%). The systems combined UASB reactors and a...

Biomass Valorization Through Applications in the Continuous Removal of Iron from Water: Batch Equilibrium and Fixed-Bed Adsorption

Iron is one of the most common constituents in groundwater, and affordable decentralized options for removing residual iron remain limited. This study valorizes two abundant agro-industrial residues, sugarcane bagasse and green coconut mesocarp, as biosorbents for removing residu...

Microbial Dynamics during the Removal of Linear Alkylbenzenesulfonate (LAS) under Anaerobic and Microaerobic Conditions with Different Co-substrates

Abstract Linear alkylbenzenesulfonate (LAS) is the most widely used anionic surfactant and is commonly found in wastewater due to its extensive use in detergents and cleaning products. Although LAS is biodegradable, its degradation in anaerobic environments remains a challenge, o...

Erector Spinae Block in Bariatric Surgery: a Systematic Review and Meta-Analysis of Randomized Controlled Trials

Abstract Introduction Obesity is a growing global health issue, and bariatric surgery offers effective weight loss outcomes. Postoperative pain management remains a challenge, with multimodal analgesia and regional blocks like the erector spinae plane (ESPB) showing promise. This...

Efflux pump inhibition disrupts biofilms and enhances azole susceptibility in Candidozyma auris

Candidozyma auris (formerly Candida auris) is a global emerging fungal pathogen of significant global clinical and epidemiological concern. It is frequently associated with hospital outbreaks, largely due to its multidrug resistance, ability to persist on medical devices, and hig...

Using Match Reference Values of External Load to Monitor Performance and Fatigue in Football: Are We Looking the Right Way?

Abstract Monitoring external load is critical for informed decision-making processes across sports. In football, external load is routinely monitored during training sessions and competitive matches. Matches are typically given particular emphasis, as they are generally associate...

Edge multiset dimension of subdivided complete graphs

A vertex set resolves the edges of a graph by multisets if the multiplicities of distances to its vertices distinguish every edge. We study the minimum size of such a set for complete graphs whose edges are replaced by paths of a common length. When that length is five, we prove...

Edge multiset dimension of subdivided complete graphs

Distances from an edge to selected vertices, called landmarks, can identify the edge; each distance is measured from its nearer endpoint. We study how many landmarks are needed when the values and their repetitions are retained but the landmark names are removed. In a complete gr...

New genera and species of lungfish (Sarcopterygii, Dipnoi) from the Upper Jurassic of western Gondwana, in the Jatobá basin, northeastern Brazil

The present study describes three new species and two new genera of lungfish from the Upper Jurassic (Tithonian) of the Aliança Formation (Jatobá Basin), in the state of Pernambuco, northeastern Brazil. The new taxa, Ceratodus ibimiriensis sp. nov., Tekoaceratodus pernambucensis...

Replica symmetry breaking in the quasi mode locked regime of titanium sapphire lasers

Abstract Recent observations of replica symmetry breaking (RSB) in ytterbium-based mode-locked fiber lasers have revealed glassy behavior in the quasi-mode-locked (QML) regime. Here, we investigate whether this behavior is restricted to a specific laser implementation or represen...

Cinnamic acids for respiratory diseases: biological evidence and drug-delivery strategies

Abstract Chronic respiratory diseases remain a major global public health burden and continue to pose significant challenges to current therapeutic strategies. In this context, cinnamic acids have attracted attention due to their reported anti-inflammatory, antioxidant, antimicro...

Trends of Laponite® Clay Mineral as an Excipient in Pharmaceuticals, Cosmetics and Medical Devices: Patent Analysis

Abstract Purpose This patent-based systematic review investigates the scientific and technological trends involving Laponite®, a synthetic clay mineral composed of disc-shaped nanoparticles. Due to its rheological, structural, and biocompatible properties, Laponite® has gained at...

(Re)Allocation of Police Capacity in Multiple Stages of Efficiency

Crime puts sustained pressure on public security budgets in Latin America, yet police resources are often distributed with little reference to the production capacity of the units that receive them. This study addresses the problem of reallocating police personnel and vehicles ac...

Exercise for chronic pelvic pain in pre-menopausal women: a systematic review and meta-analysis

In women, chronic pelvic pain (CPP) is recurrent or constant pain in the pelvis, lower abdominal region, and female organs that persists for longer than 6 months. Exercise has been effective for other chronic pain conditions and could potentially be effective for CPP. The objecti...

Nonlinear finite difference analysis of reinforced concrete building columns under vehicular impact: application to brazilian design practice

Abstract Vehicle collisions with building columns can cause severe consequences to the structural integrity of both the element and the overall structural system, requiring adequate analyses in accordance with current technical standards. This study aimed to develop and validate...

Does Adding Mindfulness to Instability Resistance Training Enhance Dual-Task Mobility and Fall-Related Outcomes in Older Adults with Motoric Cognitive Risk Syndrome? A Randomized Controlled Trial

Background Older adults with motoric cognitive risk syndrome (MCR) exhibit impairments in dual-task mobility. Non-pharmacological interventions, such as physical exercise and cognitive strategies, have been proposed to mitigate physical and cognitive decline. However, the effecti...

Contrasting carbon and nitrogen burial in pristine vs. impacted mangrove sediments

Mangrove forests are critical ecosystems that sequester carbon and nitrogen in their sediments and regulate coastal biogeochemical cycles. However, rapid degradation due to urban expansion, deforestation, and industrial development may impact their carbon and nitrogen burial capa...

ACVAM-DA: An Open-Valence Metareflective Architecture for Artificial Autonomy and Consciousness Research

This article introduces the Open-Valence Metareflective Cyclic Architecture with Autonomous Development (ACVAM-DA), a falsifiable conceptual framework for investigating artificial autonomy, metacognition, hierarchical self-modification, and theory-derived indicators of consciousn...

New Approaches for Monitoring Edible Coating Quality Using Hyperspectral Imaging (HSI) and Chemometrics

Abstract Preserving fruit quality after harvest presents a major challenge for the food industry, and edible coatings are increasingly proposed as sustainable alternatives to synthetic packaging materials. This work offers a concise review of recent advances in edible coatings fo...

Fixed-excess simple paths in multidimensional king graphs

Let K_{d,n} = P_n^{⊠d} be the d-fold strong product of a path, with opposite corners s and t. For k ≥ 0, let C_{d,k}(n) count simple s–t paths with n − 1 + k edges. Coordinate deficits show that every such path has at most dk moves other than the positive main diagonal. We prove...