Articles tagged with Energetics
A thermodynamic analysis by Skoltech professor Henni Ouerdane and his collaborators shows that waste minimization prevails over efficiency or power maximization in animal locomotion. The study recovered trends with experimental data for walk, trot, and gallop gaits.
A team of Canadian astronomers detected an intense radio burst from a nearby magnetar, lending weight to the theory that magnetars are behind at least some fast radio bursts. The findings suggest that magnetars could be responsible for some FRBs, but further research is needed to confirm this.
A Northwestern University research team developed a new theory that can predict the movement of an animal's sensory organs while searching for vital information. The theory, called energy-constrained proportional betting, provides insight into how animals gamble on energy expenditure to get useful information.
Researchers found that current energy consumption is tied to unchangeable past economic production, which led to an increase in carbon emissions. The study suggests that improving efficiency may actually accelerate civilization growth and consumption, making it harder to reduce CO2 emissions.
The study uses IBEX's long record to examine how the Sun's mood swings play out at the edge of the heliosphere. The results show the shifting outer heliosphere in great detail, hinting at processes behind one of its most puzzling features.
The 'Testbench' project enhances the quality of efficiency measurements for solar power storage systems, facilitating comparison and standardization. The goal is to improve reproducibility and confirm the results, ultimately benefiting operators and manufacturers in the growing market.
Researchers have successfully detected gamma rays from the Crab Nebula using a next-generation telescope, shedding new light on supernovae and dark matter. The prototype Schwarzschild-Couder Telescope promises to enhance imaging detail over larger field of view across the sky.
Researchers have discovered two new phenomena - interspecies radiative transition and breakdown of dipole selection rule - in the transport of radiation in atoms and molecules under high-energy-density physics conditions. This finding enhances understanding of HEDP and could lead to insights into how stars evolve in the universe.
Astronomers have identified a supernova at least twice as bright and energetic as any recorded, with calculations suggesting it may be an extremely rare 'pulsational pair-instability' supernova. The explosion was powered by a collision between the supernova and a massive shell of gas.
Researchers at the University of Rochester's Laboratory for Laser Energetics developed a novel method to shape intense laser light, accelerating electrons to record energies in very short distances. This technology could allow scientists to perform tabletop experiments to probe the Higgs boson and explore extra dimensions.
Researchers Amandine Aftalion and Emmanuel Trélat found that shorter straights and larger radii can improve running performance. Their mathematical model predicts that these track designs could potentially break long-standing records, with improvements of up to 4 hundredth of a second.
Researchers discovered bumblebees use two modes of flight to optimize energy usage, including the 'economy mode' that allows heavier loads with minimal extra flapping frequency. This behavioral choice reveals flexibility in bee behavior and challenges previous assumptions about insect physiology.
Researchers observed solar energetic particle events and found that pre-accelerated particles build up in front of coronal mass ejections, creating a new phase of the energization process critical for radiation hazards. The study highlights the complex interplay between flares, particle populations and CMEs.
Researchers develop a new approach for studying transitional flows, finding that the energy spectrum of small eddies conforms to Kolmogorov's universal theory. This breakthrough has practical applications in engineering, particularly in predicting friction between flow and pipe.
Lin X. Chen, a senior chemist at Argonne National Laboratory and Northwestern University professor, has received the 2020 Award in Experimental Physical Chemistry for her fundamental contributions to elucidating excited state structures, dynamics, and energetics of light harvesting systems.
A new study challenges conventional wisdom on obesity, suggesting that eating too much, not exercising too little, may be the primary factor in weight gain. Researchers found that Amazonian children with physically active lifestyles and chronic immune system challenges spent similar numbers of calories as sedentary children in the US, ...
Researchers discovered a hotspot in Earth's radiation belt where killer electrons form, which can cause serious anomalies in satellites. The finding improves the accuracy of forecasting when these high-speed electrons will form, potentially impacting space weather science.
Larger whales consume more prey and have higher energy efficiency due to their size. Filter-feeding whales, however, exhibit rapid increases in energy from food, potentially driving evolutionary pathways to gigantism.
New data from NASA's Parker Solar Probe reveals that energetic particles hurtling out of the sun are more varied and numerous than previously thought, according to results from the Integrated Science Investigation of the Sun instrument suite. This discovery could provide early warnings for solar storms and improve space weather forecasts.
Researchers at the University of Rochester have directly demonstrated how laser beams modify plasma conditions, affecting energy transfer in fusion experiments. This breakthrough validates a longstanding theory and improves predictive capability for integrated implosion simulations.
A team of scientists has detected extremely energetic light particles from the violent death of a heavy star, shedding new light on gamma ray bursts. By measuring the distance and energy of these particles, researchers gained insights into the extreme physical processes involved in star deaths.
An international team of researchers has successfully detected a gamma-ray burst in very-high-energy gamma light, challenging current understanding of these phenomena. The detection was made using the H.E.S.S. telescope and reveals the presence of extremely accelerated particles that exist long after the explosion.
A new study challenges the EU's approach to decarbonizing its economy, arguing that it overlooks the importance of functional societal change. The researchers propose a new methodological approach to analyze complex issues like electricity decarbonization, highlighting the need for policies that motivate use changes.
A new computational analysis suggests that fish can minimize energy consumption by balancing muscle dynamics and hydrodynamics. The study, published in PLOS Computational Biology, shows that optimal swimming speeds depend on an optimal balance between these two factors.
Researchers at Princeton Plasma Physics Laboratory developed new mathematical tools to forecast when waves will cool plasma and quench fusion reactions. A second beam injected at a different angle can suppress the effect of waves, providing new methods for maintaining plasma confinement.
Physicists at EPFL's Institute of Physics have successfully created a single phonon in ambient conditions, allowing them to study quantum phenomena in naturally occurring materials. The breakthrough enables the creation of room-temperature ultrafast quantum technologies with potential applications in various fields.
An international team of astronomers has detected radio bubbles with South Africa's MeerKAT telescope, revealing a massive hourglass-shaped structure hundreds of light-years tall. The discovery is believed to be the result of an energetic burst near the supermassive black hole, providing insights into the Milky Way's central region.
Researchers have built the world's smallest engine, a single calcium ion, which uses random fluctuations to generate vibrations and store energy in discrete units. This tiny motor has potential applications in recycling waste heat and improving energy efficiency in future technologies.
Heidelberg University physicists develop a novel spectroscopic method to map the energetic landscape inside solar cells based on organic materials. This technique enables scientists to study physical principles and better understand processes such as energetic losses with extreme precision.
Researchers found that adjusting a single molecular parameter, the molecular quadrupole moment, can tune the energetics in organic films. This effect enhances long-range Coulomb interactions in organic materials.
Physicist Will Fox receives the 2019 Thomas H. Stix Award for his original and seminal experiments on magnetic reconnection, ion Weibel instability, and shocks in laboratory astrophysics. His work investigates plasma processes that accelerate particles to enormous energies in the cosmos.
Childhood brain energy expenditure inversely related to body weight gain; variation may explain obesity timing and lifetime risk. Researchers hypothesize that brain energy demand could help predict obesity risk.
The Hubble Space Telescope has observed multiple supernovae in the spiral galaxy NGC 4051, revealing Type Ic supernovae produced by massive star core collapse. These events are scattered throughout the center and spiral arms of the galaxy.
NASA has launched the AZURE mission, carrying instruments to measure atmospheric density and temperature in auroral regions. The mission will release colorful gas tracers to track particle flow and provide valuable data on ionosphere dynamics.
Scientists have developed a model for predicting nanocrystal shapes when sandwiched between graphene layers. The research uses scanning tunneling microscopy and theoretical modeling to explain the data, showing that the top layer of graphene resists upward pressure from growing metal islands, flattening them.
Researchers aim to boost efficiency and avoid grid extension measures by increasing automation of grid operations. They are developing expert systems for real-time fault detection and co-simulation.
The researchers developed site-dependent +U correction parameters using self-consistent first principles calculations, which improves the structure of stoichiometric SrMnO3 and provides a more accurate description of defective systems. This approach can lead to lower computational cost and more precise predictions of defect energetics.
A new study found that frail patients of all ages are more likely to die than non-frail patients. Frailty is associated with poorer patient outcomes, including significantly longer hospital stays and higher readmission rates.
A team of researchers found that hot great white sharks can swim at high speeds when commuting between islands, but prefer slower speeds when hunting for fat seal snacks. The study suggests that the warm-blooded lifestyle of these sharks allows them to conserve energy by using a 'sit-and-wait' strategy.
A team of researchers found that animals switch to more stable gaits during speed-related transitions to minimize unstable dynamic states and reduce the risk of tripping or falling. The study, which examined nine animal models across various species, suggests that gait transitions prioritize stability over energy savings.
Researchers from the U.S. Army and top universities discovered a new way to enhance energetic performance of metal powders in battlefield systems by igniting aluminum micron powders coated with graphene oxide. The discovery, published in ACS Nano, could lead to improved range and lethality of existing weapons systems.
Dmitry Matyushov's research focuses on trapping electrons by protein water, allowing unidirectional electron flow. This work may lead to improved human-made catalysts and better understanding of biological energy production machinery.
Researchers have created a method to move intense laser focal points at any speed, including faster than the speed of light. This technique combines a lens that focuses specific colors of light at different locations with chirped-pulse amplification technology.
Colorado State University has been selected for the new nationwide high-intensity laser network, LaserNetUS. The network will give U.S. scientists access to some of the most intense laser sources available, including petawatt-class lasers with power output exceeding all world's power plants.
Researchers at the University of Adelaide modelled the transition to a sustainable energy future, examining the relative productivity of fossil fuels and renewables. The study shows that fuel productivity determines the viability of renewable energy and how economies will transition from fossil fuels to sustainable sources.
Researchers have detected extremely high-energy gamma rays from the microquasar SS 433, which is located 18,000 light years from Earth. This discovery sheds light on astrophysical processes and may offer insights into star systems in distant galaxies.
The Center for the Science of Synthesis Across Scales (CSSAS) brings together researchers to understand how molecular interactions control assembly and create new materials with revolutionary properties. The research focuses on protein-based building blocks, inorganic nanoparticles, and hierarchical synthesis.
A $1.54 million NIH grant will support research on modifying troponin T to improve cardiac function in heart failure. The study aims to develop a new approach for treating this condition by targeting the physiological modification of cardiac troponin T.
Astronomers have identified a blazar, TXS 0506+056, as the probable source of a high-energy neutrino detected by IceCube. The National Radio Astronomy Observatory's Karl G. Jansky Very Large Array (VLA) provided clues about the blazar's radio emission.
Scientists have found that comet 67P's molecular oxygen is not produced on its surface, contradicting previous theories. The majority of the molecular oxygen in the coma is likely primordial and originated from the comet's body.
Researchers have developed self-assembled energetic coordination polymers based on multidentate pentazole cyclo-N5-, which exhibit high energy density and detonation performance. The polymers outperform existing materials like TNT, RDX, HMX, and CL-20.
Researchers from the U.S. Army Research Laboratory and Texas Tech University demonstrated a 30-percent enhancement in TNT detonation velocity by adding novel aluminum nanoparticles. The AIH-coated nanoparticles showed improved reactivity due to their unique morphological feature, leading to enhanced explosive performance.
Researchers found that golden snub-nosed monkeys increase their energy intake from fats and carbs in winter to counteract elevated thermoregulatory costs. This adjustment enables the monkeys to balance their macronutrient content and meet specific nutritional needs, suggesting a key adaptation for survival in cold environments.
The solar wind pressure increase in 2014 led to a change in the shape of our heliosphere. The boundaries of the heliosphere expanded outward as particles rebounded off their edges. This expansion can be seen in the increased density of energetic neutral atoms detected by IBEX, which have been traveling through space and returned to Earth.
Argonne researchers Lawrence Harding, Albert Wagner, Stephen Klippenstein, and James Miller have been inducted as fellows of The Combustion Institute. Their pioneering work has led to significant advances in understanding the chemistry of combustion. The recognition highlights the importance of U.S. Department of Energy Basic Energy Sc...
Researchers found that plasmoid reconnection in Mercury's magnetotail could accelerate energetic electrons, solving a puzzle left by previous space missions. The study also revealed that turbulence enhances reconnection, leading to improved predictions for future missions like Bepi-Colombo.
Researchers have designed molecular perovskite-based energetic materials with improved explosive performances, including high detonation heat, velocity, and pressure. The new materials also exhibit increased thermal stability and low impact sensitivity, making them suitable for military devices and civil industry.
A new theoretical model reveals that these particles originate from accelerated cosmic rays via powerful black-hole jets. The model explains the similar energies of the particles by suggesting they inherit energy from their parent particles.
Researchers have solved a six-decade-old mystery about the source of energetic particles in Earth's inner radiation belt using data from a CubeSat. The study found that cosmic rays born from supernova explosions create charged particles, including electrons, that become trapped by Earth's magnetic field.
A University of Colorado Boulder student-built satellite has solved a 60-year-old mystery regarding the source of energetic and potentially damaging particles in Earth's radiation belts. The study found that these particles are created by cosmic rays entering the atmosphere, producing charged particles trapped by Earth's magnetic field.