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Science News Archive 2021 - Page 425


Page 425 of 510

New cancer scan could guide brain surgery

A new type of ultrasound scan, shear wave elastography, has been shown to detect residual cancerous tissue in the brain more sensitively than traditional methods. The technique, which measures tissue stiffness and stretchiness, could improve surgical outcomes and reduce the risk of tumor recurrence.

SourceInstitute of Cancer Research·JournalFrontiers in Oncology·DateMar 1, 2021

UNESCO listing for AusStage

AusStage, a digital humanities platform preserving Australian live performance history, has been awarded a UNESCO Memory of the World accolade. The recognition highlights the importance of preserving artistic activity and its impact on understanding Australia's cultural heritage.

COVID-19 lockdown highlights ozone chemistry in China

A COVID-19 lockdown in Northern China led to a significant decrease in nitrogen oxides (NOx) emissions but an increase in ground-level ozone pollution. Researchers found that volatile organic compounds (VOCs) were driving the increased ozone production, as NOx levels scavenged radicals and prevented ozone formation during summer months.

SourceHarvard John A. Paulson School of Engineering and Applied Sciences·JournalProceedings of the National Academy of Sciences·DateMar 1, 2021

Africans have authored just 3% of COVID-19 research

Despite Africa being home to 17% of the world's population, African authors account for only 3% of COVID-19 research papers. Analysis of top medical journals reveals a significant underrepresentation of African authors and perspectives in global health literature.

SourceBMJ Group·JournalBMJ Global Health·DateMar 1, 2021

Scientists describe 'hidden biodiversity crisis' as variation within species is lost

A new study highlights the importance of preserving intraspecific variation within species, which supports essential ecological functions and benefits nature provides for people. The loss of this variation can have serious ecological consequences, including boom-bust population cycles and reduced medicinal properties in plants.

SourceUniversity of California - Santa Cruz·JournalNature Ecology & Evolution·DateMar 1, 2021

High-performance electrocatalysts to propel development of direct ethanol fuel cells

Direct ethanol fuel cells have high energy density, low toxicity, and easy operation, but lack robust electrocatalysts for anodic ethanol oxidation. The study proposes alloying effects with core-shell construction to optimize Pd shell surfaces, achieving highest mass activity and specific activity for catalyzing ethanol electro-oxidation

SourceChinese Academy of Sciences Headquarters·JournalCell Reports Physical Science·DateMar 1, 2021

Most dollars spent on top-selling orphan drugs don't go to treat people with rare diseases

A new study by University of Michigan and Boston University researchers found that only 21% of dollars spent on 15 top-selling partial orphan drugs went to treating rare diseases, while 70% went to common diseases. This raises questions about whether the benefits of orphan drug status are always warranted for these drugs.

Covid-19: How to do lockdown? Russian scientists may have an answer

Researchers from Peter the Great St.Petersburg Polytechnic University modified the SIR model to include individuals in isolation or quarantine. Their results show that total isolation early on can significantly reduce the spread of disease and bring an earlier end to the pandemic. The modified SEIR model has been tested on data from St...

SourcePeter the Great Saint-Petersburg Polytechnic University·JournalInternational Journal of Technology·DateMar 1, 2021