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Science News Archive 2021 - Page 224


Page 224 of 510

Acid sensor discovered in plants

Scientists from Würzburg, Germany, have identified a protein in the plant Arabidopsis thaliana that detects and translates acidic conditions into an electrical signal. This discovery could lead to more tolerant crops for waterlogging conditions.

SourceUniversity of Würzburg·JournalCurrent Biology·DateJul 6, 2021

The brain's wiring technicians

A new study reveals that microglia, the brain's resident immune cells, play a crucial role in regulating brain wiring by sculpting inhibitory neurons. The research showed that microglia interact with GABA-emitting inhibitory synapses through direct physical contact, a process enabled by advanced imaging techniques.

SourceHarvard Medical School·JournalCell·DateJul 6, 2021

Behavioral ecology: Environmental heterogeneity maintains personality in wild bird

Researchers found that certain personality types excel in specific countries and years due to environmental factors like predator presence and beechmast availability. This suggests that spatial and temporal variation in selection promotes the maintenance of behavioral differences within species.

SourceLudwig-Maximilians-Universität München·JournalProceedings of the National Academy of Sciences·DateJul 6, 2021

Inherited memories of a chromosomal site

Researchers at UNIGE found that chromosomal site location is transmitted through an epigenetic process, allowing offspring to inherit correct positions even without gene information. This epigenetic memory only lasts for one generation and affects the survival of mutant worms.

SourceUniversité de Genève·JournalPLOS Biology·DateJul 6, 2021

A new look at color displays

Researchers at Linköping University developed a method to create structural colours for use in reflective colour displays, enabling manufacturing of thin and lightweight displays with high energy-efficiency. The new method uses electrically conducting plastics and can produce all colours in the visible spectrum.

SourceLinköping University·JournalAdvanced Materials·DateJul 6, 2021

Do heart medications affect COVID-19 outcomes?

Researchers analyzed all relevant COVID-19 studies to determine if cardiovascular drugs affect disease severity, hospitalizations, and deaths. The study found that patients with COVID-19 should continue taking their prescribed cardiovascular medications.

SourceWiley·JournalBritish Journal of Clinical Pharmacology·DateJul 6, 2021

Why does Mercury have a big iron core?

Scientists found that Mercury's large iron core is linked to the early sun's strong magnetic field, which pulled metal grains inward. This discovery sheds light on the formation of rocky planets' cores and their elemental distribution.

SourceTohoku University·JournalProgress in Earth and Planetary Science·DateJul 6, 2021

Non-stop signal achieved in high-power Er3+-doped mid-infrared lasers

Researchers at the Hefei Institutes of Physical Science have developed high-power Er3+-doped mid-infrared lasers with peak powers over 0.33 MW and repetition rates up to 150 Hz. The lasers achieved quasi-continuous signals, making them promising candidates for dental ablation surgery and optical parametric oscillator applications.

Story tips: Powered by nature, get on the bus, accelerating methane and more

Scientists at ORNL developed a modular design for 3D printing power poles from bioderived materials, enabling quick restoration of electricity after natural disasters. Additionally, they demonstrated wireless charging technology on an autonomous electric vehicle, advancing the transportation industry towards a decarbonized future.

SourceDOE/Oak Ridge National Laboratory·JournalProceedings of the National Academy of Sciences·DateJul 6, 2021

Castration delays DNA aging

Researchers found that castration of male sheep leads to delayed DNA aging compared to intact males, with epigenetic clocks and DNA methylation patterns differing between the two groups. The study's findings also suggest a link between castration, male hormones, and sex-specific differences in DNA aging.

The bitumen puzzle

Researchers used AFM-IR, ToF-SIMS, and fluorescence microscopy to study bitumen surface composition and structure. The study found that the surface is heterogeneous, with individual molecular assemblies distributed in a specific pattern.

SourceVienna University of Technology·JournalScientific Reports·DateJul 6, 2021

Perceptions of counterfeits among luxury goods differ across cultures

A study found that counterfeit dominance negatively impacts Anglo-American consumers' perceptions of authentic luxury fashion brands, while having little effect on Asian consumers. This is due to cultural differences in social-adjustive attitudes, with Anglo-Americans relying more on outgroups and Asians on ingroups.

SourcePenn State·JournalJournal of Business Research·DateJul 6, 2021

Fighting COVID with COVID

Researchers at Penn State designed a synthetic defective SARS-CoV-2 virus that interferes with the real virus's growth, potentially causing its extinction. The therapeutic may be used as a self-promoting antiviral treatment for COVID-19.

SourcePenn State·JournalPeerJ·DateJul 6, 2021

Dignity support at end of life

Researchers interviewed people receiving palliative care about losing independence with intimate hygiene, revealing the importance of two-way communication and empowering individuals to influence their care. The study aims to raise awareness among health professionals about providing dignified support.

SourceFlinders University·JournalPalliative Medicine·DateJul 6, 2021

Loss of biodiversity in streams threatens vital biological process

The study found that streams with high detritivore diversity have higher rates of decomposition, but also discovered that the loss of these organisms can slow down this process. The researchers concluded that if detritivores continue to decline, ecosystems will struggle to sustain life due to reduced nutrient recycling.

SourcePenn State·JournalNature Communications·DateJul 6, 2021