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Em 2026: 320 notícias
Desde 1995: 3030 notícias
Research: Amphibians Employ Inaudible Scream for Self-Defense
Publicado em 05 de abril de 2024
A study reported in the journal Acta Ethologica recorded the use of ultrasound by amphibians for the first time in South America. It also describes the first documented case of the use of ultrasound for defense against predators, in a distress call of ear-piercing intensity to many animals, but inaudible to humans.
"Some potential predators of amphibians, such as bats, rodents and small primates, are able to emit and hear sounds at this frequency, which humans can't. One [...]
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Study reveals strategy for promoting selective inhibition of multidrug-resistant bacteria
Publicado em 04 abril 2024An article published in the Journal of Environmental Chemical Engineering describes a possible strategy for promoting selective inhibition of multidrug-resistant bacteria, which are increasingly abundant owing to the indiscriminate use of antibiotics and are therefore a major human health hazard. The article proposes to use nanoparticles of metal or metal oxide to inactivate multiresistant bacteria by means of ion release, direct contact between the [...]News Medical (Austrália) -
Innovative Technique Unveils New Vaccine Targets for Schistosomiasis
Publicado em 03 abril 2024Researchers in Brazil have used an innovative technique in molecular biology to identify targets for candidate vaccines against Schistosoma mansoni, the parasite that causes schistosomiasis. Considered one of the world's 17 neglected tropical diseases (NTDs), schistosomiasis affects some 200 million people in 74 countries, according to the World Health Organization (WHO). Six million are estimated to be infected in Brazil, mainly in the Northeast region and Minas Gerais state. The [...]Mirage News (Austrália) -
Innovative molecular biology technique used to identify targets for Schistosoma mansoni vaccine candidates
Publicado em 02 abril 2024Researchers in Brazil have used an innovative technique in molecular biology to identify targets for candidate vaccines against Schistosoma mansoni, the parasite that causes schistosomiasis. Considered one of the world's 17 neglected tropical diseases (NTDs), schistosomiasis affects some 200 million people in 74 countries, according to the World Health Organization (WHO). Six million are estimated to be infected in Brazil, mainly in the Northeast region and Minas Gerais [...]News Medical (Austrália) -
New Strategy Outlined to Deactivate Superbugs
Publicado em 02 abril 2024An article published in the Journal of Environmental Chemical Engineering describes a possible strategy for promoting selective inhibition of multidrug-resistant bacteria, which are increasingly abundant owing to the indiscriminate use of antibiotics and are therefore a major human health hazard. The article proposes to use nanoparticles of metal or metal oxide to inactivate multiresistant bacteria by means of ion release, direct contact between the nanoparticles and the bacteria [...]Mirage News (Austrália) -
Beating by overheating: new strategy to combat cancer
Publicado em 02 abril 2024Many new drugs inhibit the processes that cancer cells need to divide rapidly. So as to inhibit the cancer as a whole. But cancer cells have all sorts of workarounds to get around that effect. As a result, the tumour becomes unresponsive to treatment. That’s why researcher Matheus dos Santos Dias, from the Netherlands Cancer Institute, is taking a completely different approach. He had to convince some colleagues before he could start working on this quite surprising idea. After all, [...]Oncology News (Austrália) -
Twisted magnetic field around Milky Way’s central black hole
Publicado em 01 abril 2024The twisted spiral pattern around the Milky Way’s supermassive black hole, newly observed by astronomers, reveals new qualities of the hugely powerful object lurking at the centre of our galaxyKidsNews (Austrália) -
Ancient Peru crisis linked to violence, study shows
Publicado em 29 março 2024During the transition from the fifth to the fourth century BCE, the Central Andes, an area now part of Peru, experienced a period of significant change and turmoil. Researchers delving into this era have unearthed evidence suggesting that this time was marked by political upheaval and violence, potentially linked to a shift away from religiously driven governance towards more secular forms of leadership. A groundbreaking study published in Latin American Antiquity by an international [...]KSR - knowRidge Science Report (Austrália) -
Ancient Peru Crisis Marked by Violence, Study Shows
Publicado em 28 março 2024The transition from the fifth to the fourth century BCE (Before the Common Era) seems to have been a critical period for the Central Andes, a region now part of Peru. Researchers have found evidence of turbulence during the passage from the Middle Formative period (1200-400 BCE) to the Late Formative period (400-1 BCE). Political disintegration and intergroup violence were apparently part of the context, possibly associated with a shift from theocracy to secular government. A new [...]Mirage News (Austrália) -
Black hole pic reveals Milky Way enigma
Publicado em 28 março 2024If you've never seen a gigantic electric-orange donut made of neatly ordered spiraling magnetic fields, spinning around the edges of a supermassive black hole in the Milky Way galaxy, this is your lucky click of the day. The mega-monster black hole, called Sagittarius A* (Sgr A*), is just 26,700 light-years away — and its astonishing mass is about 4.3 million times greater than our Sun. In a milestone discovery that promises to rock the entire astronomical study of black holes, [...]inkl (Austrália)