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Science News Archive 2021 - Page 119


Page 119 of 510

In Guatemala, archaeologist from Brown helps to uncover hidden neighborhood in ancient Maya city

A recent discovery at Tikal reveals a previously unknown neighborhood designed to replicate Teotihuacan's citadel, sparking new insights into the interaction between the two civilizations. Excavations found evidence of occupation and surveillance, as well as artifacts linking Tikal to Teotihuacan's imperial power.

SourceBrown University·JournalAntiquity·TypeComputational simulation/modeling·DateSep 28, 2021

Past suffering can affect future praise

A study by the University of Missouri found that people are more likely to praise someone for good deeds if they know the person has also faced suffering earlier in life. This discovery sheds light on how humans process and react to positive behaviors, such as giving praise.

SourceUniversity of Missouri-Columbia·JournalJournal of Experimental Social Psychology·TypeExperimental study·DateSep 28, 2021

Elephants strive to cooperate with allies, until the stakes get too high

A study published in PLOS Biology found that Asian elephants successfully cooperated in 80% of trials, using strategies like fighting back or moving sides to prevent cheating. However, cooperation quickly broke down when one partner could monopolize the reward, revealing a complex dynamic in their social behavior.

SourcePLOS·JournalPLOS Biology·TypeExperimental study·DateSep 28, 2021

Researchers report on new way to deliver healing stem cells to kidney injury patients

A new ex vivo drug delivery system has been shown to keep MSCs viable longer and reprogram the peripheral immune response toward organ repair. The study's results suggest that SBI-101 can impact a peripheral immune response that can be transmitted to local tissue damage in vital organs, including the kidney.

SourceAlphaMed Press·JournalStem Cells Translational Medicine·TypeRandomized controlled/clinical trial·DateSep 28, 2021

Steep but not deep: New research chronicles how Utah ski resorts are adapting to climate change

Researchers chronicle how Utah ski resort managers are adopting adaptive tactics to cope with decreasing snowpack, shorter seasons and worsening weather. Managers are exploring alternative revenue streams through activities like mountain biking and festivals.

SourceS.J. & Jessie E. Quinney College of Natural Resources, Utah State University·JournalMountain Research and Development·TypeSurvey·DateSep 28, 2021

New control of liquid–liquid interface through non-equilibrium thermodynamics

A Japanese collaborative team presents a novel method for tuning hydrodynamic interfacial instability through a thermodynamic parameter controlling liquid–liquid phase separation. They successfully predict pattern changes of a growing interface by applying the maximum entropy production principle.

SourceTokyo University of Agriculture and Technology·JournalThe Journal of Physical Chemistry B·TypeExperimental study·DateSep 27, 2021

Human rights violations of older people: The American Journal of Geriatric Psychiatry publishes special issue to tackle ageism, mentalism and ableism

The American Journal of Geriatric Psychiatry publishes a special issue to strengthen the rights and voices of older people worldwide. The issue aims to reduce the burden of ageism, mentalism and ableism, which currently permeates virtually every aspect of older persons' lives.

SourceElsevier·JournalAmerican Journal of Geriatric Psychiatry·DateSep 27, 2021

Researchers identified two possible Mott-insulating pictures in magnetic superexchange couplings in Sr2IrO4

Researchers have identified two possible Mott-insulating pictures in magnetic superexchange couplings of Sr2IrO4, shedding light on the mechanism for superconductivity in doped La2CuO4. The study used different theories to analyze the magnetic interactions in the strong-to-intermediate coupling regime.

SourceHefei Institutes of Physical Science, Chinese Academy of Sciences·JournalPhysical Review B·TypeExperimental study·DateSep 27, 2021

Researchers propose strategy to inhibit over-oxidation for oxidative dehydrogenation of ethane

Dalian Institute of Chemical Physics researchers propose dual active site strategy to isolate dehydrogenation and oxidation in oxidative dehydrogenation of ethane, resulting in near 100% ethene selectivity. This approach could be extended to multiple oxidation reactions plagued by over-oxidation.

SourceDalian Institute of Chemical Physics, Chinese Academy Sciences·JournalNature Communications·TypeCommentary/editorial·DateSep 27, 2021

Ultrathin quantum dot LED that can be folded freely as paper

Researchers at the Institute for Basic Science have developed a foldable quantum dot LED that can be transformed into various complex 3D structures, such as butterflies and pyramids. The technology employs selective laser-etching to create precise curvature lines, allowing for stable light-emitting performance even after repeated folding.

SourceInstitute for Basic Science·JournalNature Electronics·TypeExperimental study·DateSep 27, 2021

Eye on the tiger: genetics show global fisheries management should re-think tiger sharks

Research confirms two separate tiger shark populations in the Atlantic and Indo-Pacific oceans, despite trans-oceanic migrations. This long-term separation has resulted in distinct genetic diversity among Hawaiian and Indian Ocean tiger sharks, emphasizing the need for tailored management plans and targeted conservation efforts.

SourceSave Our Seas Foundation·JournalJournal of Heredity·TypeData/statistical analysis·DateSep 27, 2021

Discovery of mechanics of drug targets for COVID-19

A team of international researchers has unraveled the inner workings of C5aR2, a key receptor involved in inflammation and COVID-19. The study provides an additional opportunity for therapeutic targeting with new drug molecules to block its activation and inflammation response.

SourceMcGill University·JournalMolecular Cell·TypeExperimental study·DateSep 27, 2021

New wireless photoelectric implant controls the activity of spinal neurons

Researchers have developed a revolutionary wireless photoelectric implant that can control the activity of spinal neurons, enabling the study of neural function and the development of new treatments for neurological disorders. The breakthrough technology uses pulses of light to stimulate or inhibit specific spinal-cord neurons, potenti...

SourceEcole Polytechnique Fédérale de Lausanne·JournalNature Biotechnology·TypeExperimental study·DateSep 27, 2021

How geology and climate shape biodiversity

Tropical rainforests have uneven biodiversity due to geological history and climate. Researchers used a new model to simulate species diversification, finding that historical dynamics of mountain building and climate change drove biodiversity distribution rather than current climate factors.

SourceETH Zurich·JournalPLOS Biology·DateSep 27, 2021

SUTD researchers designed an ultralow power artificial synapse for next-generation AI systems

Researchers at Singapore University of Technology and Design (SUTD) have designed an ultralow power artificial synapse for next-generation AI systems. The team's innovation uses a nanoscale deposit-only-metal-electrode fabrication process, achieving an all-time-low energy consumption of 1.8 pJ per pair-pulse-based synaptic event.

Dinosaurs’ ascent driven by volcanoes powering climate change

A new study found that four distinct episodes of volcanic activity coincided with significant environmental changes, including the Late Triassic Carnian Pluvial Episode, which drove animal and plant diversification. The research suggests that large volcanic eruptions had a profound impact on global temperature and humidity.

SourceUniversity of Birmingham·JournalProceedings of the National Academy of Sciences·TypeObservational study·DateSep 27, 2021

New form of expanded dialysis improves quality of life, study finds

A new form of expanded dialysis has been found to improve the quality of life for patients with chronic kidney disease, including increased energy and better sleep. The treatment, which removes a broader range of toxins from the body, was tested in a clinical trial and shown to reduce inflammation and improve overall well-being.

SourceLawson Health Research Institute·JournalKidney Medicine·TypeRandomized controlled/clinical trial·DateSep 27, 2021

Passage of recreational cannabis laws leads to some rise in use but not for all demographics

A study by Columbia University found that recreational cannabis laws led to increased past-year and past-month cannabis use among Hispanic, Other and non-Hispanic white individuals, but not among non-Hispanic Black people or those aged 12-20. The researchers also highlighted persistent racial disparities in cannabis arrests and incarce...

Novel strategy discovered for FLT3-ITD-positive acute myeloid leukemia

Researchers at the Hefei Institutes of Physical Science have developed a novel targeting chaperon protein HSP70 inhibitor QL47 to treat FLT3-ITD-positive acute myeloid leukemia. The study found that QL47 induces FLT3-ITD protein degradation and cell apoptosis, extending animal survival in mice bone marrow engraftment models.

SourceHefei Institutes of Physical Science, Chinese Academy of Sciences·JournalSignal Transduction and Targeted Therapy·TypeExperimental study·DateSep 27, 2021

Study of nearly 3 million people finds ‘healthy’ obese people more likely to develop heart failure than those of normal weight—but are not at greater risk of heart attack or stroke

Researchers analyzed data from nearly 3 million adults and found that those with 'metabolically healthy obesity' had a higher risk of developing heart failure and atrial fibrillation. However, they were not at increased risk for heart attacks, strokes, or cardiovascular deaths.

SourceDiabetologia·JournalDiabetes Obesity and Metabolism·DateSep 27, 2021