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Lifeboat Foundation News Blog (EUA)
Em 2025: 9 notícias
Desde 1995: 37 notícias
The generalization of statistical mechanics makes it possible to regularize the theory of critical phenomena
Publicado em 28 de maio de 2025
Statistical mechanics is one of the pillars of modern physics. Ludwig Boltzmann (1844–1906) and Josiah Willard Gibbs (1839–1903) were its primary formulators. They both worked to establish a bridge between macroscopic physics, which is described by thermodynamics, and microscopic physics, which is based on the behavior of atoms and molecules.
The Austrian physicist Boltzmann explained the second law of thermodynamics in statistical terms. He defined the entropy of a system based [...]
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Simpler method refines ultrapure diamond film fabrication for quantum and electronic applications
Publicado em 24 maio 2025Diamond is one of the most prized materials in advanced technologies due to its unmatched hardness, ability to conduct heat and capacity to host quantum-friendly defects. The same qualities that make diamond useful also make it difficult to process. Engineers and researchers who work with diamond for quantum sensors, power electronics or thermal management technologies need it in ultrathin, ultrasmooth layers. But traditional techniques, like laser cutting and polishing, often [...]ver notícia -
Modification makes immunotherapy for blood cancer even more effective
Publicado em 20 maio 2025Currently, half of patients with non-Hodgkin’s lymphoma and acute lymphoblastic leukemia—two types of cancer that affect blood cells—do not respond adequately to treatment with CAR-T cells. The therapy involves harvesting the patient’s own defense cells (T lymphocytes), modifying them in the laboratory to make them capable of destroying tumor cells, and reinjecting them into the body. These refractory cases usually relapse after conventional immunotherapy. To [...]ver notícia -
Sustainable method produces high-purity material for use in green hydrogen production
Publicado em 13 maio 2025A group of researchers affiliated with the Center for Innovation in New Energies (CINE) has developed a method for purifying materials that is simple, economical and has a low environmental impact. The scientists have managed to improve the efficiency of a film that can be used in some green hydrogen production processes. Known as mullite-type bismuth ferrite (Bi ₂ Fe ₄ O ₉), the material has been used as a photoelectrocatalyst in the production of hydrogen by photoelectron oxidation, [...]ver notícia -
Natural enzyme capable of cleaving cellulose could transform biofuel production
Publicado em 10 maio 2025The deconstruction of cellulose is essential for the conversion of biomass into fuels and chemicals. But cellulose, the most abundant renewable polymer on the planet, is extremely recalcitrant to biological depolymerization. Although composed entirely of glucose units, its crystalline microfibrillar structure and association with lignin and hemicelluloses in plant cell walls make it highly resistant to degradation. As a result, its degradation in nature is slow and requires complex enzymatic [...]ver notícia -
Firefly light gives rise to sensor that detects cellular alterations
Publicado em 04 abril 2025The gene encoding an enzyme from a firefly, discovered at the Sorocaba campus of the Federal University of São Carlos (UFSCar) in Brazil, has given rise to a biosensor capable of detecting pH changes in mammalian cells—which could be useful, for example, in studying diseases and assessing the toxicity of a drug candidate. The luciferase from the species Amydetes vivianii changes color from bluish-green to yellow and red as acidity decreases in fibroblasts, the most common cell [...]ver notícia -
A Super Fungus Is Evolving in Polluted Cities — And It’s Spreading Through Cats
Publicado emA deadly fungal epidemic in Brazil is evolving fast: pollution, cats, and genetics may be fueling its unstoppable spread. Brazil is facing the world’s largest and most persistent sporotrichosis epidemic, a fungal infection spread primarily through cats. A new study reveals an alarming genetic diversity in the fungus, suggesting that urban pollutants may be accelerating its evolution. Researchers identified molecular markers that could enhance diagnostics and treatments, while also [...]ver notícia -
Genomic study indicates our capacity for language emerged 135,000 years ago
Publicado emIt is a deep question, from deep in our history: when did human language as we know it emerge? A new survey of genomic evidence suggests our unique language capacity was present at least 135,000 years ago. Subsequently, language might have entered social use 100,000 years ago. Our species, Homo sapiens, is about 230,000 years old. Estimates of when language originated vary widely, based on different forms of evidence, from fossils to cultural artifacts. The authors of the [...]ver notícia -
Non-invasive sensor measures intracranial pressure more accurately, aiding early intervention
Publicado emA technology developed by the Brazilian company brain4care has been shown to be able to measure absolute values of intracranial pressure (ICP) more accurately than existing non-invasive methods. This is the result of a study published in the journal npj Digital Medicine by researchers from the University of São Paulo in Brazil, the University of Cambridge in the United Kingdom, Emory University in the United States, and the company itself. “The study included the largest number [...]ver notícia -
Study proposes that proteins can compartmentalize and form droplets inside cells
Publicado em 12 outubro 2024In physics, a system composed of two substances can be modeled in accordance with classical mixture theory, which considers the fraction corresponding to each constituent and the interactions among constituents. Examples include the coexistence of high-and low-density phases in supercooled water, and the coexistence of metal puddles in an insulating matrix in the Mott metal-insulator transition. Read morever notícia