A team of scientists suggests that massive volcanic eruptions triggered the first mass extinction event, which occurred at the end of the Ordovician period. The researchers analyzed mercury levels in sedimentary rocks from North America and southern China, finding a correlation between Hg enrichments and the mass extinction.
Researchers at Tohoku University successfully generated unpolarized single photons from diamond with intrinsic randomness. This breakthrough is expected to revolutionize quantum information technology, including quantum computing and cryptography.
Researchers at Tohoku University and the University of Liverpool have successfully created quantum spin liquids from polyaromatic hydrocarbons using alkali metals. This achievement marks a significant step towards understanding exotic phenomena in materials science, with potential applications in superconductivity and quantum computing.
Researchers at Tohoku University used large-scale hybrid quantum-classical simulations to explain ATP hydrolysis energy. They discovered the microscopic mechanism of AHE release in water, finding that electronic-state stabilization and hydration free energy compensate for each other.
Researchers at Tohoku University successfully demonstrated quadruped gait transition phenomena by changing only speed parameters. The energy-efficient profile of the robot's gait patterns matched those measured in horses.
Researchers at Tohoku University used seismic tomography to image the three-dimensional structure of the Earth's interior, shedding new light on the deep Bonin deep earthquake. The study found that the Pacific slab is split and penetrated the lower mantle, with multiple factors contributing to its occurrence.
Scientists at Tohoku University simulated the formation of super-deep diamonds using high-pressure and high-temperature experiments. The study suggests that these rare diamonds can form through the reaction of Mg-carbonate and silica minerals at extreme depths, offering new insights into Earth's interior conditions.
Researchers at Tohoku University found 19 common Japanese color categories, including 11 basic colors and eight additional named categories. The study also showed that traditional expressions from classic poetry have been retained despite modern linguistic changes.
Researchers developed a molecular robot that changes shape in response to specific DNA signals, enabling biomimetic robotics and potential medical innovations. The tiny robot, about 1 millionth of a meter in size, consists of protein and DNA molecules.
Scientists have developed a method to recycle unwanted Si sawdust into high-capacity and durable LIBs with capacities up to 3.3 times larger than conventional graphite. The proposed recycling process has the potential to be mass-produced at a reasonably low cost.
Scientists at Tohoku University have discovered a previously unknown type of autophagy that removes damaged chloroplasts in plants, shedding light on the aging process. This finding could lead to new methods for controlling plant aging and enhancing crop yields.
Women who started menstruating early may face a higher risk of stroke, according to research published in Neuroepidemiology. Starting periods at age 13 or younger increases the risk by 1.8 times compared to those who started at age 15. Further research is needed to confirm this association.
Scientists have identified three potential light elements - hydrogen, silicon, and sulfur - that could make up the remaining 5% of the Earth's core. These findings are based on experiments simulating the core's extreme conditions and matching them with seismological observations.
Researchers at Tohoku University identified a new mechanism producing low-energy free electrons from X-ray absorption in matter. The process, known as Electron Transfer Mediated Decay, involves rapid charge redistribution over multiple atomic sites.
Researchers at Tohoku University have developed a new drug, SAK3, that stimulates the release of acetylcholine in the brain and improves cognition. In animal experiments, SAK3 has proven to be safe and well-tolerated, with potential for development into a disease-modifying drug.
Researchers at Tohoku University identified two new types of microRNA that improved hyperglycemia in a mouse model of diabetes. These miRNAs were shown to promote insulin-producing cell proliferation and regeneration, offering potential for therapeutic beta-cell regenerative therapies.
Researchers at Tohoku University found that a mutant strain of fruit fly lacks the scribbler gene, rendering them unable to copulate. This impairment parallels the neural control of copulation in humans, where BMP signaling and serotonin regulation are crucial for sexual activity.
Researchers at Tohoku University developed a Processing Speed Training Game (PSTG) that significantly improved processing speed and inhibition among healthy older adults. Regular playing of PSTG also reduced depressive moods compared to a Knowledge Quiz Training Game (KQTG).
Researchers developed an artificial neural network using spintronic devices, demonstrating associative memory operation with learning ability, similar to human brain. The technology enables fast-processing capabilities and ultralow-power consumption, opening new horizons in AI technology.
Researchers found that vitamin B3 nicotinamide can relieve preeclampsia symptoms, improve blood vessel damage, and even stimulate fetal growth in affected mothers. The treatment has shown promise as a potential alternative to delivery for pregnant women with the deadly disease.
Researchers simulate 2D glass using supercomputers, revealing it can exhibit enhanced thermal vibration motion leading to infinite softening. This finding has potential applications in energy-saving societies.
Researchers found that young paternal fathers produced offspring with impaired vocal communication, while older fathers resulted in hyperlocomotion. The study provides insight into the potential mechanisms underlying the rise of these disorders.
A team at Tohoku University found that when a cluster of neon atoms is exposed to intense extreme ultraviolet light, it initiates a cascading process that produces many low-energy electrons. This mechanism could have implications for future radiation therapy.
A study by Tohoku University found that air pollutants cause hypersensitivity to itch, leading to skin inflammation and allergic diseases like asthma. The research team discovered that AhR, a transcription factor activated by air pollutants, causes itchy sensations through the expression of neurotrophic factor artemin.
Researchers at Tohoku University found that visual attention has multiple functions and stages, including early visual processing and selective extraction of information. The study proposes a model of spatial attention that can predict different attention effects for various visual processes, which is useful for complex tasks like driv...
Researchers at Tohoku University have discovered a potential link between Alzheimer's disease and insulin signaling dysfunction. The study suggests that memantine, an Alzheimer's treatment, can improve cognitive function by inhibiting the ATP-sensitive potassium channel (Kir6.2 channel), leading to better memory retention in patients.
Astronomers have detected a 'hot molecular core,' a cocoon of molecules surrounding a newborn massive star, for the first time outside our Galaxy. This discovery reveals significantly different chemical compositions compared to similar objects in our own Galaxy, suggesting potential difficulties in producing large organic species.
Research at Tohoku University reveals genetic variants affecting enzymatic activities in healthy individuals, suggesting that moderate and rare variants contribute to metabolic differences and disease susceptibility. The study identifies five associations between metabolites and gene variants, including four related to metabolic diseases.
Researchers at Tohoku University have developed a new technique for compressing Galois field arithmetic operations, resulting in the world's most efficient AES cryptographic processing circuit. This breakthrough enables the use of encryption technology in IoT devices with tight energy constraints, enhancing safety and security.
A new analytical tool for detecting double-stranded RNA (dsRNA) has been developed, exhibiting sequence-selective fluorescence upon binding. This probe offers a significant improvement over conventional methods by allowing single-base pair resolution and preferential binding to dsRNA over dsDNA.
Researchers at Tohoku University have discovered that gold can be magnetized by applying heat. The non-equilibrium anomalous Hall effect (nAHE) was observed in the gold film due to the heat flow, indicating the evolution of magnetization. This discovery has potential applications in thermoelectric devices and spintronics.
Researchers at Tohoku University discovered a new shape memory alloy with superelastic effect, raising potential for various industries. The alloy exhibits shape recovery upon heating, making it suitable for self-deployable space habitat frames and damping devices.
A new hypothesis proposes that soot ejected by the Chicxulub asteroid impact caused global cooling, drought, and limited photosynthesis in oceans. This rapid climate change is believed to have led to the mass extinction of dinosaurs and ammonites.
Researchers used X-ray free electron laser to study the effect of radiosensitizers on tumor cells. They found that energetic ions formed by ionization cause damage, leading to increased radiation sensitivity.
Researchers at Tohoku University have developed a new-structure nonvolatile magnetic memory device that achieves sub-nanosecond operation with minimal current consumption. The device overcomes limitations of existing nonvolatile memories and is expected to enable the creation of high-performance microcontroller units for IoT applications.
Researchers at Tohoku University have synthesized wafer-scale and high-yield suspended graphene nanoribbons using a bottom-up approach, enabling the integration of over 1 million ribbons with high yield.
Researchers developed a novel robot microscope system to track freely moving small animals and manipulate their brain activity. The system, called OSaCaBeN, uses projection mapping to reveal functional diversification of dopamine-releasing nerve cells in the nematode C. elegans.
Researchers at Tohoku University have discovered the origin and mechanism of ferromagnetism in Mn-doped GaAs, accelerating spintronic element development. The study reveals that doped Mn atoms extract electrons from As atoms, causing ferromagnetism.
Researchers from Tohoku University have developed a technology to stack magnetic tunnel junctions directly on vertical interconnect access, reducing the chip area of STT-MRAM and increasing memory bit yield. This breakthrough will significantly lower manufacturing costs, making STT-MRAM competitive with DRAM.
Scientists at Tohoku University found that discharge plasma increases calcium ion influx through TRP channels, triggering cell activities like gene transfection and wound healing. This breakthrough may contribute to developing more efficient plasma medicine treatments.
The researchers developed a new method to increase the aggressive intensity of cavitation without increasing power. By controlling pressure at the bubble collapse region, they were able to enhance cavitation efficiency by a factor of about 100.
Researchers measured precise binding energy of a 10ΛBe hypernucleus, finding small charge symmetry breaking for heavier hypernuclei. The study extends knowledge of the nuclear force to the baryonic force and has significant implications for hypernuclear studies.
A groundbreaking concept proposes using electron spins in semiconductors for information processing, enabling quantum computing and reducing energy consumption. The research team achieved long-distance spin transport in a semiconductor quantum well, controlling spin precession speed with an external gate voltage.
The team discovered a new plasma wave phenomenon leading to the development of a negative ion source for fusion plasma heating. The newly developed plasma source utilizes a helicon wave to produce high-temperature electrons, which are then neutralized and injected into the magnetically-confined plasma core.
A new-structure magnetic memory device utilizing spin-orbit-torque-induced magnetization switching has been successfully developed by Tohoku University researchers. The device boasts ultrafast magnetization reversal timescales and potential benefits for power-efficient integrated circuits.
Researchers at Tohoku University developed a new pretreatment method using sodium percarbonate and hydrodynamic cavitation to improve sugar formation in biomass. The method outperformed existing ultrasonic systems in producing fermentable sugars.
Researchers successfully control ultrafast electron motion using FERMI's light, achieving a time resolution of 3 attoseconds. This breakthrough enables the study of fast chemical reactions on the scale of attoseconds, shedding new light on processes like photosynthesis and combustion.
Insect taste organs on their legs help guide feeding behavior, with specific neurons processing information differently in the brain and influencing movement towards food or away from it.
Researchers at Tohoku University discovered a new physics of antiferromagnets, where an applied current induces magnetization switching in neighboring ferromagnets. The findings enable the development of ultralow-power integrated circuits and neuromorphic computing devices with fast and reliable control.
Electrons with 'no mass' in graphene become superconducting at 4 K, paving the way for ultrahigh-speed nano devices. The superconductivity is driven by electron transfer from calcium atoms to graphene sheets.