Veículo
Phys.Org (Reino Unido)
Em 2019: 57 notícias
Desde 1995: 188 notícias
Researchers discover a link between two important products of nitric oxide
Publicado em 07 outubro 2019
Ever since three U.S.-based researchers working independently unveiled the role of nitric oxide in mediating blood vessel dilation, endothelial cell contraction and smooth muscle relaxation, their discoveries have served as a basis for novel treatments for high blood pressure and erectile dysfunction, among other conditions.
The Nobel Prize in Physiology or Medicine in 1998 was awarded jointly to Robert F. Furchgott, Louis J. Ignarro and Ferid Murad for groundbreaking research of nitric oxide [...]
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Novel compound interrupts malaria parasite's lifecycle
Publicado em 07 outubro 2019An international group of researchers has proven that a molecule called TCMDC-135051 can selectively inhibit a protein that is essential to the lifecycle of Plasmodium falciparum, one of the parasites that causes malaria. The results of the study, just published in the journal Science, pave the way for the development of a new antimalarial drug. Malaria kills nearly 500,000 people per year, and more than 200 million new cases of the disease are reported annually. One of the obstacles to [...]ver notícia -
Novel material with strong action against fungi and tumors was developed
Publicado em 02 outubro 2019A new material with antifungal and antitumor properties has been developed by researchers at the Center for Development of Functional Materials (CDMF), one of the Research, Innovation and Dissemination Centers (RIDCs) supported by São Paulo Research Foundation – FAPESP. CDMF is hosted by the Federal University of São Carlos (UFSCar) in São Paulo State, Brazil. The compound was obtained from a sample of pure silver tungstate (a-Ag2WO4) irradiated with electrons and [...]ver notícia -
Researchers show how railroad worms produce red light
Publicado em 20 setembro 2019A research group comprising Brazilian and Japanese scientists has discovered how luciferase produced by the railroad worm Phrixothrix hirtus emits red light. Luciferase is an enzyme that catalyzes the oxidation of luciferin in fireflies, producing oxyluciferin and enabling fireflies to emit light. Differences in the molecular structures explain the different colors of this bioluminescence in different species. This discovery has the potential for new biotechnological applications, such as the [...]ver notícia -
A new species of electric eel produces the highest voltage discharge of any known animal
Publicado em 10 setembro 2019There are at least three species of electric eels (Electrophorus spp.), not just one as previously believed. Two new species have recently been described with São Paulo Research Foundation—FAPESP's support by a group of researchers affiliated with the Smithsonian Institution and National Geographic Society, among other institutions. One of the new species can discharge up to 860 volts, the strongest of any known animal. Electric eels are naked-back knifefishes (Gymnotidae) and [...]ver notícia -
Break in temporal symmetry produces molecules that can encode information
Publicado em 29 agosto 2019In a study published in Scientific Reports, a group of researchers affiliated with São Paulo State University (UNESP) in Brazil describes an important theoretical finding that may contribute to the development of quantum computing and spintronics (spin electronics), an emerging technology that uses electron spin or angular momentum rather than electron charge to build faster, more efficient devices. The study was supported by São Paulo Research [...]ver notícia -
Nanostructured material with potential for use in catalyzers
Publicado em 29 agosto 2019Site Phys.Org (Reino Unido) reproduz reportagem da Agência FAPESP sobre novo método de fabricação de nanofibras de óxido de titânio, desenvolvido pelo ITA e pelo Instituto Científico e Tecnológico da Universidade Brasil, que podem ter várias aplicações, como o uso em catalisadores e filtros. Publicada na revista Materials Today: Proceedings, a pesquisa tem apoio da FAPESP por meio de Auxílio Regular à Pesquisaver notícia -
Technique combats widespread passion fruit disease
Publicado em 27 agosto 2019Passion fruit woodiness caused by cowpea aphid-borne mosaic virus (CABMV), the disease that most affects passion fruit (Passiflora edulis) grown in Brazil, can be treated with a relatively simple technique, according to a study published in the journal Plant Pathology. It shows that systematic eradication of plants with symptoms of the disease preserves the crop as a whole and keeps plants producing for at least 25 months. The technique currently used to combat CABMV entails renewing the [...]ver notícia -
High diversity of harvestmen in Atlantic Rainforest and ancient geological events
Publicado em 23 agosto 2019In the southern Atlantic Rainforest remnants between Rio de Janeiro State in Southeast Brazil and Santa Catarina State in South Brazil, there are some 600 species of harvestmen (Opiliones), arachnids that live in caves and humid forests. The number of species is considered high even for this well-known biodiversity hotspot, and most of these species are endemic. A reconstitution of the evolutionary history of the subfamily Sodreaninae has brought to light an explanation for this peculiar [...]ver notícia -
Thyme essential oil in corn starch particles combats Aedes aegypti larvae
Publicado em 06 agosto 2019Corn starch, an abundant, cheap and biodegradable raw material, is the basis for a novel larvicide developed by researchers at the University of Campinas (UNICAMP) in São Paulo State, Brazil. The material is used in microcapsules for storage and controlled release of active compounds to kill larvae of Aedes aegypti, the mosquito that transmits dengue, zika, yellow fever and chikungunya. A patent application has been filed via UNICAMP's innovation agency (Inova). The methodology is [...]ver notícia