6,685 articles mezi dny 1.10.2020 a 31.10.2020

Development of cost-efficient electrocatalyst for hydrogen production

The key to promoting the hydrogen economy represented by hydrogen vehicles is to produce hydrogen for electricity generation at an affordable price. Hydrogen production methods include capturing by-product hydrogen, reforming fossil fuel, and electrolyzing water. Water electrolysis in particular is an eco-friendly method of producing hydrogen, in which the use of a catalyst is the most important...

Droughts are threatening global wetlands: new study

University of Adelaide scientists have shown how droughts are threatening the health of wetlands globally. Published in the journal Earth-Science Reviews, the scientists highlight the many physical and chemical changes occurring during droughts that lead to severe, and sometimes irreversible, drying of wetland soils.

Four in 10 extra deaths in Lombardy not linked to COVID-19

The study, published in PLOS ONE, looked at the number of deaths in each of the 7,251 local authority areas of Italy during the first four months of the year and compared these figures with predictions based on data from 2016-2019. It found that Lombardy had the most excess deaths of any region in Italy.

Game 'pre-bunks' COVID-19 conspiracies as part of UK's fight against fake news

Cambridge research shows a 'pre-bunk' game can reduce susceptibility to fake news for up to three months after just one play. Latest findings come as new Go Viral! game is launched in partnership with the UK Government to fight the spread of COVID-19 false information. * The games let users play the role of a fake news producer so they can understand how misinformation is circulated online.

Genomes offer new insights into fig-wasp symbiotic system

In a recent study, researchers from Fujian Agriculture and Forestry University (FAFU) and the Xishuangbanna Tropical Botanical Garden (XTBG) provided insights into fig-wasp coevolution through comparative analyses of two Ficus genomes - one with aerial roots and one without, one monecious and one dioecious, as well as the genome of a coevolving wasp pollinator. They also sequenced more samples of...

Graphene microbubbles make perfect lenses

Jia and fellow researchers from Swinburne University of Technology recently teamed up with researchers from National University of Singapore, Rutgers University, University of Melbourne, and Monash University, to develop a method to generate precisely controlled graphene microbubbles on a glass surface using laser pulses.

HKUMed develops a novel therapeutic approach against Epstein-Barr virus-associated tumours

A research team at LKS Faculty of Medicine, The University of Hong Kong (HKUMed) discovered that exosomes derived from Vδ2-T cells (Vδ2-T-Exos) can effectively control Epstein-Barr virus-associated tumours and induce T-cell anti-tumour immunity. The novel findings of Vδ2-T-Exos provide insights into new therapeutic approach for Epstein-Barr virus (EBV)-associated tumours. The...

HSE University researcher develops global HIV prevention index for drug users

St. Petersburg, together with colleagues from Georgia State University (USA) and Tarbiat Modares University (Tehran), have developed the HIV-PWID Policy Index (HPPI)--an international policy index for HIV prevention among people who inject drugs. This is the first major tool for assessing and comparing the extent to which HIV/AIDS prevention policies among PWID have been developed in 105...

Hydroxychloroquine does not counter SARS-CoV-2 in hamsters, high dose of favipiravir does

Virologists from the KU Leuven Rega Institute in Belgium have shown that a treatment with the anti-malaria drug hydroxychloroquine does not limit SARS-CoV-2 coronavirus replication in hamsters. A high dose of the anti-flu drug favipiravir, by contrast, has an antiviral effect in the hamsters. The team published their findings in the Proceedings of the National Academy of Sciences (PNAS).

Investing in protective gear for health care workers pays off

Providing adequate personal protective equipment (PPE) for all health care workers around the world requires an initial investment of billions of dollars, but the returns on that investment could be close to 8000% in productivity gains, according to a new study published this week in the open-access journal PLOS ONE by Nicholas Risko of the Johns Hopkins University School of Medicine and...

Meltwater lakes are accelerating glacier ice loss

Meltwater lakes that form at glacier margins cause ice to recede much further and faster compared to glaciers that terminate on land, according to a new study. But the effects of these glacial lakes are not represented in current ice loss models, warn the study authors. Therefore, estimates of recession rates and ice mass loss from lake-terminating glaciers in the coming decades are likely to be...

Metoprolol: an old drug with unique cardioprotective properties

A a study carried out by scientists at the Centro Nacional de Investigaciones Cardiovasculares (CNIC) shows that the cardioprotective effect of metoprolol during a heart attack is not shared by other beta-blockers commonly administered by intravenous injection, such as atenolol and propranolol.