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Science News Archive 2021


Page 163 of 510

The giant jurassic dinosaur Allosaurus was a scavenger, not a predator

New research from Portland State University suggests that Allosaurus, a large carnivorous dinosaur, acquired most of its calories by scavenging on sauropod carcasses. The study's agent-based model and morphological analysis support this hypothesis, challenging 150 years of established thought about Allosaurus' ecological role.

Geneticists map the rhinoceros family tree

Researchers have helped fill gaps in the rhino evolutionary family tree by analyzing genomes of living and extinct species, finding that African and Eurasian lineages separated 16 million years ago and that low genetic diversity is a natural state for rhinoceroses, not a consequence of recent population declines

Sony Alpha a7 IV (Body Only)

Sony Alpha a7 IV (Body Only) delivers reliable low-light performance and rugged build for astrophotography, lab documentation, and field expeditions.

These robots can move your couch

Student researchers at the University of Cincinnati developed artificial intelligence to train robots to work together to move a couch around obstacles and through a narrow door. The robots successfully completed the task 95% of the time in simulations, with nearly equal success without re-training.

Cosmic rays may be key to understanding galactic dynamics

Recent studies suggest that cosmic rays, originating from supernova remnants and pulsars, have a significant impact on galactic dynamics and star formation. The streaming instability triggered by cosmic rays in the interstellar medium can create plasma waves that heat and scatter gas, influencing the formation of planets and stars.

Understanding Antarctic ice historic changes could reveal future changes

Researchers used glacial isostatic adjustment modeling to reconstruct the Antarctic Ice Sheet before the Last Glacial Maximum, revealing a thickened ice sheet that depressed the continent and generated high sea levels. The study aims to improve understanding of ice-sheet response to climate changes.

Apple iPhone 17 Pro

Apple iPhone 17 Pro delivers top performance and advanced cameras for field documentation, data collection, and secure research communications.

Building a better vaccine for SARS CoV-2

Researchers have identified a potential advantage of weakened SARS-CoV-2 variants as immunogens, sparking interest in their use for live-attenuated vaccines. The variants, which emerge rapidly during cell culture propagation, show resistance to subsequent infection with both the parental strain and emerging variants.

A novel gene involved in male infertility: ZFP541

A new gene ZFP541 has been discovered by researchers at Kumamoto University to control the completion of meiosis in spermatogenesis. The study found that ZFP541 plays an essential role in regulating meiosis and is expressed in late meiotic prophase, binding to regulatory regions of meiosis-related genes.

Climate change threatens seal hunting by Indigenous Alaskans

The Iñupiaq people's seal hunting season has shrunk by about one day per year over the past 17 years due to sea ice decline. This reduction in flexibility affects hunters' ability to prepare and hunt, as they now have less time to adapt to changing conditions.

Apple Watch Series 11 (GPS, 46mm)

Apple Watch Series 11 (GPS, 46mm) tracks health metrics and safety alerts during long observing sessions, fieldwork, and remote expeditions.

Correlative chemical imaging directly in neurons

Researchers use super-resolution infrared imaging combined with X-ray fluorescence nano-imaging to study amyloid toxicity on a subcellular level. They found that the distribution of trace elements in neurons is related to molecular mechanisms of Alzheimer's disease, offering new insights into preventing neuronal damage.

Research sheds new light on decreased performance under pressure

Researchers from Carnegie Mellon University and the University of Pittsburgh conducted a study on three Rhesus monkeys, finding that their performance declined by up to 25% when offered a jackpot reward. The team also discovered a link between sensory motor processing and emotional processing in the monkeys' brains.

CT scans suggest possible lung destruction in some asthmatics

A novel CT scan-based approach detects changes in lung tissue indicating emphysema and airway constriction in patients with asthma. This finding may explain why conventional anti-inflammatory treatments are ineffective in some asthmatics, paving the way for personalized management of the disease.

SAMSUNG T9 Portable SSD 2TB

SAMSUNG T9 Portable SSD 2TB transfers large imagery and model outputs quickly between field laptops, lab workstations, and secure archives.

High cholesterol fuels cancer by fostering resistance to a form of cell death

Researchers at Duke University Medical Center identified a mechanism where breast cancer cells use cholesterol to develop tolerance to stress, allowing them to resist ferroptosis and proliferate. This finding highlights the importance of lowering cholesterol in preventing cancer progression and offers new approaches for treatment.

Unlocking the secrets to sorghum’s adaptability

A reservoir of genes allowing sorghum to adapt to environmental stresses has been identified from 13 contrasting genomes. This genetic diversity is valuable for breeders, enabling them to improve crop yield and resilience. The analysis, led by the University of Queensland, provides unprecedented insights into the genome's dynamic nature.

Thinking of plastic surgery? Zoom in on this first

A study published in Marketing Letters found that analytical thinkers are more likely to undergo plastic surgery, while holistic thinkers are more forgiving of imperfections. The researchers suggest taking a holistic approach to consider the long-term impact of procedures on one's life.

High-quality crystals reveal new physics of topological insulators

Researchers at the University of Texas at Dallas have produced large, high-quality bismuth iodide crystals that demonstrate the existence of weak topological insulators. The crystals undergo a phase transition into a novel structure at room temperature, altering their electronic properties.

AmScope B120C-5M Compound Microscope

AmScope B120C-5M Compound Microscope supports teaching labs and QA checks with LED illumination, mechanical stage, and included 5MP camera.

Diabetes among US children, teens

The prevalence of type 1 and type 2 diabetes among US children and teens rose significantly from 2001 to 2017. Researchers estimated an increase in diabetes cases across all age groups during this period, with the largest increases seen among younger populations.

Patient page: Screening for prediabetes, type 2 diabetes

The U.S. Preventive Services Task Force recommends screening for prediabetes and type 2 diabetes, particularly in high-risk individuals. The guidelines aim to detect and prevent these conditions through early detection and intervention.

DJI Air 3 (RC-N2)

DJI Air 3 (RC-N2) captures 4K mapping passes and environmental surveys with dual cameras, long flight time, and omnidirectional obstacle sensing.

Seeing the inner workings of centrioles in early land plants

Researchers study mosses and find unique centriole assembly process, with a 'unique symmetry break' that allows for regulation. This discovery provides insights into centriole development across the tree of life and has implications for our understanding of evolution.

Developing clinically relevant human-scale living organs

A team of researchers has created a bioink that can reduce toxicity and improve cell survival, enabling the fabrication of clinically relevant human-scale organs. The development paves the way for regenerative medicine applications.

Evolutionary ‘arms race’ may help keep cell division honest

Research from the University of Pennsylvania suggests that certain proteins have evolved to reduce biased chromosome inheritance, potentially avoiding mistakes and birth defects. The study found a parallel pathway suppressing selfish chromosomes, indicating an evolutionary arms race.

Meta Quest 3 512GB

Meta Quest 3 512GB enables immersive mission planning, terrain rehearsal, and interactive STEM demos with high-resolution mixed-reality experiences.

Using your smartwatch to reduce stress

Researchers at the University of Houston have developed a smartwatch technology that can monitor and help lower stress levels by detecting changes in skin conductance response. The device sends reminders to listen to relaxing music when stress is detected, forming a closed-loop system.

NSF taps Danforth Center to lead new institute

The New Roots for Restoration Biology Integration Institute aims to integrate plant traits, communities, and the soil ecosphere to advance restoration of natural and agricultural ecosystems. The project seeks to understand how root traits influence plant interactions with each other and with the soil.

Kestrel 3000 Pocket Weather Meter

Kestrel 3000 Pocket Weather Meter measures wind, temperature, and humidity in real time for site assessments, aviation checks, and safety briefings.

Stress from rising population numbers may cause a decline in human fertility

A review article published in the Endocrine Society's journal Endocrinology predicts a peak in population numbers in 2064 followed by a 50% drop by the end of the century. Stress from less quality social interactions is believed to suppress sperm count, ovulation, and sexual activity, contributing to declining reproduction rates.

CalDigit TS4 Thunderbolt 4 Dock

CalDigit TS4 Thunderbolt 4 Dock simplifies serious desks with 18 ports for high-speed storage, monitors, and instruments across Mac and PC setups.

Human, swine waste pose dual threats to water quality after flooding

A study by North Carolina State University found that surface waters in eastern North Carolina were more likely to face dual contamination from human and swine waste after Hurricane Florence. The presence of Arcobacter, a pathogen not associated with human or swine fecal markers, was also discovered.

Davis Instruments Vantage Pro2 Weather Station

Davis Instruments Vantage Pro2 Weather Station offers research-grade local weather data for networked stations, campuses, and community observatories.

GoPro HERO13 Black

GoPro HERO13 Black records stabilized 5.3K video for instrument deployments, field notes, and outreach, even in harsh weather and underwater conditions.

How firefighters deal with heat stress and fatigue

A new study asked over 470 firefighters about their recovery methods in extreme heat, finding that simple strategies like finding shade and drinking water are often used. The research suggests potential for better cooling and recovery protocols to improve firefighter safety and performance.

Two studies seek to go beyond the GIST of intestinal tract cancer

Gastrointestinal stroma tumors (GIST) are rare cancers that can be problematic to detect and treat. Researchers have identified the mutational drivers for GIST in the stomach and found a potential drug therapy, temozolomide, which showed promising results in treating patients with specific mutations.

Record-breaking lithium-metal cell

Researchers at Karlsruhe Institute of Technology have developed a record-breaking lithium-metal battery with an energy density of 560 Wh/kg, retaining 88% capacity after 1000 cycles. The battery features a nickel-rich cathode and a dual-anion ionic liquid electrolyte, which significantly improves stability.

Fluke 87V Industrial Digital Multimeter

Fluke 87V Industrial Digital Multimeter is a trusted meter for precise measurements during instrument integration, repairs, and field diagnostics.

Turning hazelnut shells into potential renewable energy source

Researchers found that wood vinegar and tar fraction in bio-oil produced from hazelnut shells pyrolysis at 400 C to 1,000 C contain high concentrations of phenolic substances, which contribute to their antioxidant activity. The study suggests using these fractions as a potential renewable energy source.

USPSTF lowers recommended screening age for type 2 diabetes

The USPSTF has lowered the recommended starting age of screening for type 2 diabetes from 40 to 35. Screening is now recommended for adults with prediabetes or type 2 diabetes, particularly those aged 35-70 who are overweight or obese. This recommendation aims to detect and treat these conditions earlier.

Aranet4 Home CO2 Monitor

Aranet4 Home CO2 Monitor tracks ventilation quality in labs, classrooms, and conference rooms with long battery life and clear e-ink readouts.