Institution
Universidade Federal do Ceará
Recent research
- Materials & Energy
Controllable anisotropic Andreev reflection in gapless few-layer phosphorene
Andreev reflection at a normal/superconductor interface is studied in a system in which the normal region consists of a few-layer black phosphorus (BP) under an electric field applied perpendicularly to the material’s plane. The application of a strong electric field induces a ph...
- Engineering & TechnologyOpen access
Abstract The design of airfield pavements is commonly performed using mechanistic–empirical methods implemented in software tools. Although consolidated, these tools incorporate simplified modeling assumptions that may influence the estimated structural responses. In this context...
- Health & MedicineOpen access
ABSTRACT Among neotropical small felids, the Leopardus tigrinus is classified as vulnerable by the International Union for Conservation of Nature, but studies on reproductive morphology and physiology are scarce for conservation strategies. This study aimed to describe testicular...
- Health & Medicine
BACKGROUND: This study analyzed the incidence of skin cancer among rural workers in Brazil, considering the influence of ultraviolet (UV) radiation, skin color, and regional factors. METHODS: Data from the National Cancer Institute (2008-2022) on skin cancer were used, using hist...
- BiologyOpen access
Response of Tetranychus urticae (Acari: Tetranychidae) to natural products
Abstract The two-spotted spider mite, Tetranychus urticae (Acari: Tetranychidae), is a cosmopolitan pest of numerous crops, including grapevines, where outbreaks cause leaf chlorosis, necrosis, defoliation, and yield reduction. Intensive use of synthetic acaricides has led to res...
- Health & MedicineOpen access
A mechanistic approach about oxidative, mutagenic, and cytotoxic effects of an organotellurane
Abstract Organotellurium (OTe) compounds have pharmacological properties, including leishmanicidal, antimalarial, and antifungal activities. Herein, we assessed cytotoxicity effects of OTe RF07 in a panel of tumor cell lines, as well as its oxidative, toxicity, and hemolytic acti...
- Health & MedicineOpen access
Metastatic progression in melanoma is driven by the coordinated activity of adhesion molecules and growth factor receptors, yet the functional interplay between integrins and VEGFR-related signaling remains poorly defined. This study investigated the role of α4β1 integrin, also k...
- Society & EconomicsOpen access
Does cooperation pay off over time? Evidence from water and wastewater services
Local governments around the world adopt governance arrangements, including intermunicipal cooperation (IMC), as strategies to improve water and wastewater services (WWS). This study examines whether involvement in IMC is associated with improved performance of WWS providers. Per...
- Materials & EnergyOpen access
The potency of an antagonist is a key concept in pharmacology with multiple implications that range from the basic science to the clinical scenario, e.g. from receptor characterization to dosage schedule of a patient. However, teaching the concept of antagonist potency may be a c...
- Health & MedicineOpen access
Frédéric Chopin's illness: a clinicopathological Conference 176 years after his death
Abstract This article revisits, in the format of a clinicopathological conference, the illness that led to the death of Frédéric Chopin at the age of 39 in 1849. Although tuberculosis has been historically accepted as the most likely cause, the authors propose an alternative hypo...
- Climate & EnvironmentOpen access
Agroecologia e mudanças climáticas no Trópico Semiárido
This article makes a theoretical and, to a certain extent, propositional reflection on the conceptions, assumptions and evidences of climate change in the tropics, with emphasis on the Brazilian semiarid region. The contributions of agriculture to climate change are presented and...
- Health & MedicineOpen access
Chagas disease, caused by the parasite Trypanosoma cruzi , affects approximately 8 million people worldwide. The search for new therapeutic candidates is intensified by the limited efficacy and severe adverse effects of current treatments, such as benznidazole and nifurtimox. In...
- Materials & Energy
Abstract A novel cocrystal composed of nicotinamide (NA) and undecanoic acid (UA) in a 1:1 stoichiometry has been successfully synthesized via slow evaporation and comprehensively characterized through a multidisciplinary approach combining experimental and computational methods....
- Society & Economics
Investor sentiment, IFRS and market mispricing in emerging economies
Purpose This study investigates whether the adoption of International Financial Reporting Standards (IFRS) moderates the relationship between investor sentiment, both local and global, and subsequent asset returns in emerging markets. We explore whether IFRS adoption mitigates th...
- Health & MedicineOpen access
3,4-Dihydroxyphenylacetaldehyde (DOPAL) is the most reactive dopamine (DA)-derived aldehyde and has been implicated in selective dopaminergic neurodegeneration in α-synucleinopathies, including Parkinson’s disease (PD) and multiple system atrophy (MSA). Here, we present the first...
- Physics & SpaceOpen access
Efficient Techniques for Low-Rank Tensor Approximation and Applications in Robust Object Detection
This paper introduces efficient randomized fixed-precision and single-pass algorithms for low-tubal-rank approximation of third-order tensors. The proposed fixed-precision algorithms are faster and more efficient than the existing algorithms for approximating the truncated tensor...
- Materials & EnergyOpen access
Study of strontium hexaferrite prepared by solid state reaction using celestite and hematite
Abstract Strontium hexaferrite (SrM) powders were prepared by solid-state reaction using celestite and magnetite/hematite. Energy dispersive X-ray fluorescence spectrometry, X-ray diffractometry (XRD), scanning electron microscopy (SEM), and vibrating sample magnetometry were use...
- Health & MedicineOpen access
Oral Rhabdomyomatous Hamartoma in a Paediatric Patient: Case Report a Rare Lesion
ABSTRACT Background Rhabdomyomatous hamartoma is a rare congenital lesion, usually described on the face and neck and infrequently found in the oral cavity. Because its clinical presentation is non‐specific, histopathological examination plays a fundamental role in establishing t...
- AI & ComputingOpen access
PrivMDC: leveraging multi-dimensional correlations to answer differentially private range queries
Abstract Answering an unbounded number of multi-dimensional range queries while preserving privacy is a significant problem that has been the focus of recent studies since range queries serve as a core component of many data analysis tasks. Existing techniques that use local diff...
- Physics & SpaceOpen access
On the Axial Nature of Relativistic Quantum Interactions
This record contains an early preprint draft of a research paper on the intrinsic fields of fundamental particles. Conventional frameworks of physical interactions inherently rely on bipartite descriptions, necessitating static central fields to govern conservative forces. This p...