282 documents found, page 1 of 29

Disorder-induced instability of a Weyl nodal loop semimetal towards a diffusive...

Weyl nodal loop semimetals are gapless topological phases that, unlike their insulator counterparts, may be unstable to small perturbations that respect their topology-protecting symmetries. Here, we analyze a clean system perturbed by chiral off-diagonal disorder using numerically exact methods. We establish that the ballistic semimetallic phase is unstable towards the formation of an unconventional topologica...

A common terminology to unify research and conservation of coralline algae and ...

Linguistic uncertainty is a prime source of uncertainty pervading ecology and conservation. Coralline algae are a widespread and diverse group of calcifying red macroalgae that underpin coastal ecosystem function and service provision. Recent increasing interest in coralline algae in the scientific literature has revealed a diverse but confusing terminology at organism to habitat scales. Coralline algal researc...

Glyphosate: a terrestrial threat to marine plants? a study on the seagrass zost...

Glyphosate-based herbicides (GBHs) are extensively used worldwide, raising concerns about their potential effect on non-target aquatic ecosystems. This study investigated the short-term physiological effects of a commercially available GBH on the seagrass Zostera marina under controlled mesocosm conditions. Z. marina individuals were exposed to three concentrations of glyphosate (0.165, 51, and 5100 mg L−1 ) fo...

Response of a benthic sargassum population to increased temperatures: decline i...

Sargassum is an important primary producer of rocky bottom communities in coastal ecosystems. Like other parts of the planet, benthic populations of S. natans from Ilha Grande Bay (IGB), southeastern Brazil, have been suffering from different forms of natural and anthropogenic disturbances, in particular increasing seawater temperatures. The aim of this study was to understand the effects of temperature on the ...

Marine forests forever—A necessary multilateral program for a fair future

Not only advances but also old addictions, setbacks, obstructions and delays are observed during COP16 (on biodiversity), COP29 (on climate change) and G20 in a year full of tragedies resulting from climate change; we need to look in the rearview mirror and plan new paths to be presented and discussed at COP30, in 2025, in the Brazilian Amazon. Worldwide temperature records show that 2023 and 2024 were the warm...

Withstanding the heat: resilience of free-living coralline algae to marine heat...

Marine heatwaves (MHWs) can severely impact benthic ecosystems, driving major ecological shifts. As they become longer, more frequent, and intense, MHWs are emerging as a dominant threat to marine biodiversity. Yet, their potential effects on coralline algal beds (CABs, including rhodolith beds), habitats of critical ecological importance, remain largely unknown. This study investigated the physiological respon...

IDN Jovem : 8º Seminário "IDN Jovem"

A Virtual Reality Simulator for Enhancing Marine Pollution Control Efforts

We developed and assessed the Marine Pollution Control Simulator VR, a virtual reality training platform designed to improve the preparedness of marine pollution control teams. Traditional training for marine oil spills is costly and poses logistical and safety challenges. Our VR-based solution offers an immersive environment for training in oil spill containment and recovery, featuring navigation and equipment...

MATHEMATICS AND MUSIC HAND IN HAND TO ENHANCE KNOWLEDGE: A DIDACTIC EXPERIENCE ...

This article presents an investigation, developed with 20 students of the 2nd year of schooling, aged between 7 and 8 years old, whose main objective was to investigate the influence of music in the acquisition and understanding of mathematical knowledge. Following a qualitative methodology, different data collection techniques were used: direct observation and document analysis (during the study), interview wi...

ADVANCED AIR MOBILITY (AAM)

Nowadays, air taxis are an increasingly materialized reality. Soon companies such as the German Lilium and Volocopter will present their services for moving passengers and goods between notable points in cities, flying over the skies of urban centers. This new electric aviation, dubbed Advanced Air Mobility (AAM), is a reality that is already being prepared in several cities around the world, through implementa...