Exact and Earth Sciences

• Do human impacts and environmental factors shape intertidal meiobenthic communities across freshwater, estuarine, and oceanic beaches in Uruguay?

  Bruno Gorostidi, Noelia Kandratavicius, Javier García-Alonso

  Submitted 03/11/2026 - Posted 03/12/2026

  • Environmental Factors
  • sandy beaches
  • Meiobenthos
  • Anthropogenic Impacts
  • Diversity Patterns

  • PDF (Portuguese)
• GOLDBACH’S CONJECTURE FROM THE PERSPECTIVE OF THE ODD PRIME FACTORS OF AN EVEN NUMBER

  Imanol Urcola

  Submitted 02/06/2026 - Posted 02/23/2026

  Versions: 3

  • Goldbach's Conjecture
  • Sieve of Eratosthenes
  • Prime factors
  • List of numbers

  • PDF (Spanish)
• MSIRV Simulation for Dengue with Vaccination in a Complex Urban Domain

  Amanda Maria Cardoso Cabral, Edivaldo Junior

  Submitted 02/09/2026 - Posted 02/10/2026

  • MSIRV
  • dengue
  • numerical methods

  • PDF
• Current state of knowledge on Xenacanthiformes (Chondrichthyes, Elasmobranchii) from the Taquaral Member, Irati Formation, Permian of the Paraná Basin

  Artur Chahud

  Submitted 01/13/2026 - Posted 02/03/2026

  • Diplodoselachidae
  • Xenacanthidae
  • Xenacanthus
  • Kungurian
  • endemism

  • PDF
• PROFILE OF SURGICAL SITE INFECTIONS IDENTIFIED THROUGH TELEPHONE-BASED POST-DISCHARGE SURVEILLANCE IN A UNIVERSITY HOSPITAL IN NORTHERN BRAZIL

  Carla Andréia de Lima Guimarães, Sanay Vitorino de Souza, Angelo Giuseppe Roncalli da Costa Oliveira

  Submitted 01/21/2026 - Posted 01/27/2026

  • Surgical Wound Infection
  • Health Technology
  • Infection Control
  • Mobile Health
  • Cross Infection

  • PDF (Portuguese)
• MATHEMATICS TEACHING METHODOLOGIES AND SPECIFIC APPROACHES FOR TEACHING INDIVIDUALS WITH ASD: A STUDY WITH PRIMARY AND SECONDARY EDUCATION TEACHERS

  João Renan Silva dos Santos Reis, Ana Marli Bulegon

  Submitted 01/21/2026 - Posted 01/26/2026

  Versions: 2

  • Mathematics Education
  • Autism Spectrum Disorder
  • Inclusive education
  • Teaching methodologies
  • Teacher perceptions

  • PDF (Portuguese)
• Prediction and Typification of Fire Use in the Legal Amazon Region of Brazil: A Study Based on Events Detected by the Fire Panel

  Jack Endrick Pastrana Mojica, Tássia Fraga Belloli, Pamela Boelter Herrmann, Deyvis Cano, Camila Souza Silva

  Submitted 01/19/2026 - Posted 01/20/2026

  • brazilian amazon
  • Fire ecology
  • machine learning

  • PDF (Portuguese)
• Socioeconomic Factors and Academic Performance: An Explainable and Predictive Analysis of ENEM in Rio Grande do Norte

  Rodrigo Tertulino, Ricardo Almeida, Laércio Alencar

  Submitted 12/23/2025 - Posted 01/06/2026

  • Machine Learning
  • Explainable Artificial Intelligence (XAI)
  • Educational Inequality
  • ENEM
  • Rio Grande do Norte

  • PDF (Portuguese)
• The relation between mass and energy in the Theory of Special Relativity: On the history of the formulation of E = mc²

  Vinícius Carvalho da Silva, Wellington Pereira de Queirós, Clair de Luma Capiberibe Nunes

  Submitted 12/12/2025 - Posted 12/18/2025

  • Einstein
  • E=mc²
  • Special Relativity
  • History of Physics
  • Mass-Energy

  • PDF (Portuguese)
• The Standard Model as board game: an outreach project for teaching particle physics

  Adriano Cherchiglia, Marceli Aquino, Rodrigo Machado Aquino Leme, Theo Basso Pilon

  Submitted 11/14/2025 - Posted 12/11/2025

  • particle physics
  • science communication
  • university outreach

  • PDF (Portuguese)
• The Influence of School-Level Structural Factors on Creativity and Math Achievement Among Students in Brazil: A Multilevel Analysis

  Helena Rodrigues Ferreira

  Submitted 12/08/2025 - Posted 12/09/2025

  • Creativity
  • PISA Score
  • School Resources
  • Multilevel Analysis
  • Math Achievement

  • PDF
• On the True Origin of Quantum Nature in Atoms: A Missing Story

  Ghanshyam Jadhav

  Submitted 11/08/2025 - Posted 11/13/2025

  • Photoelectric effect
  • Light quanta
  • Force through field-field interaction
  • Apparent force
  • Spin
  • Formation of atoms
  • Formation of molecules
  • quantum entanglement

  • PDF
• Determination of Natural Uranium and Thorium Levels in Environmental Matrices Surrounding Uranium Mining Sites via ICP-MS

  Joel Augusto Moura Porto, Lander de Jesus Alves, Hector Hugo Silva Medrado, Josilene da Silva Rocha, Rodrigo Gibaut de Souza Góis, Fábio Carvalho Nunes, Marcelo Machado Viana, Ana Paula de Carvalho Teixeira

  Submitted 09/29/2025 - Posted 11/12/2025

  • uranium
  • thorium
  • mining
  • ICP-MS
  • ore
  • water
  • soil

  • PDF (Portuguese)
• Solving Real-Time Distribution of Pickup and Delivery Tasks with Multiple Robotic Agents

  Heder Soares Bernardino, Alex Borges Vieira, José Ronaldo Mouro

  Submitted 10/30/2025 - Posted 11/10/2025

  • multi-agent
  • real-time
  • heuristics

  • PDF
• Spatiotemporal analysis of homicides and their possible relationship withunplanned urban expansion in Salvador, Bahia

  Evaldo Simões, Jocimara Lobão, Felipe Nery, Daniel Portella

  Submitted 11/02/2025 - Posted 11/04/2025

  • Socio-spatial dynamics
  • Territoriality
  • Urban resilience
  • Marginalization
  • Violence

  • PDF (Portuguese)
• Baseline survey of microplastics in Phallusia nigra (Ascidiacea) in different sites along the Brazilian Coast, Central, and Southwest Atlantic

  Paulo Cezar Silva, Mariana Pacheco Almeida, Rayane Sorrentino, Luis Felipe Skinner

  Submitted 10/24/2025 - Posted 10/24/2025

  • MARINE POLLUTION
  • FILTER-FEEDERS
  • POLYMER COMPOSITION
  • TROPICAL ECOSYSTEMS

  • PDF (Portuguese)
• Cigarette butt pollution on a mesotidal Argentine beach: spatial patterns, environmental drivers, and implications for coastal management

  Maria Luján Bustos, Federico Ferrelli, Fiamma Antonela Lefiu, Gerardo Perillo, María Piccolo

  Submitted 10/21/2025 - Posted 10/23/2025

  • CIGARETTE BUTTS
  • MESOTIDAL BEACHES
  • CBPI
  • COASTAL MONITORING
  • MARINE LITTER

  • PDF
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