A new study by HKU and UCLA scientists reveals that Alfvén waves act as an invisible power source, driving charged particles into the atmosphere and producing glowing auroral lights. The research provides a definitive answer to the physics of Earth's aurora and offers a universal model applicable to other planets in our solar system.
This review discusses integrated photonic synapses, neurons, memristors, and neural networks for photonic neuromorphic computing. The authors summarize three foundational device classes and survey multiple IPNN architectures, highlighting critical issues for practical deployment.
Researchers at the University of Rochester found that the brain analyzes global patterns of image motion caused by eye movements to understand how objects move and where they are located in 3D space. This discovery challenges conventional ideas that image motion produced by eye movements is visual noise to be subtracted off.
Research found hormonal contraceptive use lowers cardiovascular risk in most women, but not those with PTSD. The study analyzed healthcare records of 31,824 women and suggests clinicians consider stress-related psychiatric disorders when discussing hormonal contraceptives.
A research team clarifies the molecular mechanism of Ostα/β, a major basolateral bile acid exporter in enterocytes. The study reveals a unique seven-transmembrane fold and lateral substrate-binding groove that accommodates amphipathic substrates.
A new study from Cornell University suggests that choline, a nutrient often consumed too little during pregnancy, may play an underappreciated role in regulating inflammation. Higher recent dietary choline intake was associated with lower levels of inflammation in the third trimester.
Dr. Catherine Prater's research project aims to improve prediction models and uncover metabolic markers that explain individual differences in weight gain. She will use machine learning techniques to train and test prediction models using existing clinical trial data.
A study by Florida Atlantic University found that ultra-processed foods (UPFs) are associated with a 47% higher risk of cardiovascular disease. Researchers analyzed data from the US National Health and Nutrition Examination Survey and found that those consuming high amounts of UPFs had a significant increase in heart attack and stroke ...
A study in the Journal of Nutrition Education and Behavior found that psychosocial factors like motivation, confidence, and social support are strongly linked to diet quality among rural adults. Participants with higher scores in these areas consumed more fruits, vegetables, and fiber, and fewer ultraprocessed foods.
Intravenous tenecteplase administered 4.5 to 24 hours after ischemic stroke non–large vessel occlusion improved functional outcomes at 90 days compared to standard care. However, it also increased the risk of symptomatic intracranial hemorrhage.
Researchers created a framework allowing AI agents to dynamically interrupt and stay silent based on assigned personality traits and urgency scores. This human-like flexibility led to higher accuracy on complex tasks compared to standard models.
A study of 225 newborns found that high prenatal oestrogen levels, indicated by long index fingers, are associated with large head circumference and increased brain size in boys. This could provide evidence for the positive influence of prenatal oestrogen on human brain evolution
A novel cardiac activity-based framework enables reliable emotion recognition across individuals, overcoming substantial inter-subject variability. The system employs a photonic sensing system and sample entropy-based signal processing strategy to characterize cardiac signals, resulting in accurate and robust emotion assessment.
A new study investigates the dynamics of a complex fault zone under Seattle, revealing that secondary faults rupture more frequently than previously thought. Researchers hope to refine their understanding of these faults and determine how much hazard they pose to Seattle's four million residents.
A new study reveals that loosely social species, which don't form stable groups, are more vulnerable to extinction due to population declines that limit social interactions. These species can struggle to survive without the benefits of social connections, such as finding food and spotting predators.
Sandia Labs has earned the HIRE Vets Platinum Medallion Award for its commitment to attracting and retaining military veterans. The lab attributes its success to programs such as veteran-specific resources, leadership programming, and dedicated human resources efforts.
A new augmented reality display system has been developed using a non-orthogonal polarization-multiplexing metasurface and freeform optical elements. The system can render clear digital images on three independent focal planes at different distances, providing a realistic three-dimensional visual experience.
Researchers have developed a long, needle-thin brain electrode with channels that enables neural signal recording and precisely targeted medication delivery across different brain regions. The technology has primarily been developed for basic research but may be important for future treatments in epilepsy and other neurological diseases.
A joint study by several institutions analyzed the relationship between climatic conditions, Legionella presence, and Legionnaires' disease cases in Catalonia. The results show that rising temperatures create ideal conditions for Legionella to multiply, increasing disease incidence.
A review synthesizes evidence suggesting short-term simulated microgravity can unload the spine, stimulate GAG production, and activate cellular signals promoting tissue regeneration. This approach targets underlying pathological processes directly and offers a non-invasive strategy for spinal care and sports medicine.
A new research proposes the Deeply Understanding Problems (DUP) method to address semantic misunderstanding errors in LLMs' math problem-solving. The experimental results show that DUP outperforms other counterparts across various reasoning datasets, achieving new SOTA results on GSM8K and SVAMP.
Researchers propose InfoIGL framework to extract invariant graph features, enhancing model generalization ability. The method achieves state-of-the-art performance on out-of-distribution graph classification tasks.
Photodynamic therapy using haemoporphyrin and red light has been shown to effectively inactivate Staphylococcus aureus in plasma bags, extending shelf life and ensuring sterility. The technique offers an alternative to antibiotics, which have become obsolete due to excessive use.
A research team developed a fully real-valued optical chip for generative models, allowing for ultra-low latency and high energy efficiency. The innovation uses real-valued optical encoding and nonlinear activation, achieving an accuracy of 98% on iris classification tasks.
A research team proposes the Bidirectional Chain-of-Thought (BiCoT) framework for zero-shot object navigation, enabling AI agents to reason about navigation paths from both target and agent perspectives. Experimental results demonstrate significant improvements in success rate and navigation efficiency over previous methods.
Scientists at UNIGE discovered that neutrophils, a type of immune cell, undergo reprogramming to produce chemokine CCL3, promoting cancer growth. This mechanism appears to be a major variable in tumour biology and could serve as an indicator of disease progression.
Researchers at The University of Hong Kong have made a major breakthrough in controlling light with natural magnetic materials. They achieved negative refraction, a phenomenon that defies the law of physics, using a thin layer of CrSBr to bend light backward or in unexpected directions.
A research team proposed GIRL, a Generative Job Recommendation system using large language models and reinforcement learning. The system achieved superior recommendation effectiveness by designing a reward model and introducing a Proximal Policy Optimization-based method.
A machine learning model identified 17 environmental and social factors that contribute to out-of-hospital cardiac arrests. Mean ambient temperature and higher relative humidity are associated with an increase in OHCA incidents.
The VIP-2 experiment, a highly sensitive test of the Pauli exclusion principle, found no evidence of its violation. The team set the strongest limits yet on possible violations involving electrons in atomic systems, constraining speculative theories beyond the Standard Model.
Researchers developed a new theoretical framework that links individual animal movements to population dynamics across space and time. The range-resident logistic model incorporates interactions between multiple animals, providing a more accurate prediction of population sizes and helping inform real-world conservation recommendations.
Researchers used MRI to compare neurovascular compression in patients with Vestibular Neuritis and Ramsay Hunt Syndrome. They found a higher prevalence and severity of compression in RHS patients, suggesting nerve hyperexcitability may contribute to complex symptomatology.
Scientists discovered that water bridges organize PNIPAM's structure as it contracts and expands, with water pulling the strings rather than direct polymer contacts. Long supercomputer simulations followed billions of time steps to analyze the motion of PNIPAM in water.
The expanded partnership strengthens researcher collaboration, increases open access opportunities, and fosters the impact of trusted knowledge. Researchers can discover and access relevant content through ResearchGate's Community Engagement Upgrade, while Taylor & Francis editors use new tools to grow their journals' communities.
A recent cohort study found that individuals diagnosed with cancer in 2020 and 2021 experienced worse short-term survival rates compared to those diagnosed between 2015 and 2019. The study suggests substantial harms associated with cancer care disruptions during the COVID-19 pandemic.
A study published in Scientific Reports found that football fans' mean stress level was 41% higher on the day of a major match compared to non-match days. Participants experienced increased heart rates, peaking during the match, and were more likely to engage in risky behaviors such as drinking alcohol.
A new review introduces a chronological and probabilistic model to explain the recurrence of autoimmune skin diseases like vitiligo. The model proposes that full disease manifestation is the outcome of genetic susceptibility and a series of environmental or internal biological hits.
Researchers developed a light-sensitive oligonucleotide probe that selectively detects 5-formylcytosine, an epigenetically important intermediate. The probe demonstrates stable cross-linking with 5fC across various conditions, enabling its detection in target DNA and complex biological samples.
A cohort study reveals that infants from vegan households have similar growth patterns to those from omnivorous households, with a higher risk of early underweight at birth. As the findings suggest, further research is needed to examine the quality of vegan diets and the impact of nutritional counseling during pregnancy and infancy.
Research finds significant association between vestibular hypofunction and accelerated cognitive decline in specific domains. Vestibular assessment may identify at-risk individuals and support cognitive reserve.
A Northwestern University study found that 75% of participants had dreams including puzzle fragments, with solved puzzles occurring more often in lucid and non-lucid dreams. Engineering dreams may help increase creative problem-solving ability.
Researchers at Newcastle University have created a reversible adhesive that can bond materials together like traditional glue but can also be easily separated. This technology allows for the reuse, repurposing, or recycling of dissimilar materials, making it a game-changer for industries such as packaging and automotive parts.
Researchers at Saarland University have developed carbon spheres filled with iron oxide, achieving promising results for environmentally friendly lithium-ion batteries. The material's storage capacity increases over time as the iron oxide is electrochemically activated, making it a potential solution for renewable energy storage.
Researchers have discovered two distinct redox reactions in MXene flakes depending on the electrolyte, providing insights into charge transfer processes at the nanoscale. This finding lays the groundwork for optimizing pseudocapacitive energy storage devices with high storage capacity and speed.
Researchers developed and validated AI models to predict trauma patients' need for blood transfusions using pre-hospital data. The models achieved high predictive accuracy, identifying patients at risk of haemorrhagic shock more accurately than traditional risk classification.
Damaged huntingtin proteins accumulate due to a genetic mutation, leading to severe symptoms like movement disorders and dementia. Blocking specific tagging sites on the protein exacerbates the disease, highlighting potential therapeutic targets.
Researchers propose an alternative explanation for the galactic centre: an enormous clump of mysterious dark matter exerting gravitational influence. The model also explains the galaxy's large-scale rotation and predicts a unique cosmic structure.
Researchers describe a method to study evolutionary history prior to the last universal common ancestor, providing insights into the emergence of foundational characteristics of life. They focus on 'universal paralogs,' rare gene families with broad presence across all or nearly all organisms alive today.
The KIT Center Climate, Environment and Resources is developing resource-efficient closed-loop systems to reduce environmental impact. The project aims to analyze resource and energy flows in material and product cycles to optimize circular production.
Scientists have developed a method to perform quantum operations between logical qubits while correcting for potential errors. The 'lattice surgery' technique involves splitting and merging surface-code squares to entangle two logical qubits, allowing for fault-tolerant quantum computing.
LimbLab enables 3D visualization of gene expression patterns, making it easier to study embryonic development. The open-source pipeline also provides advanced features like developmental age assignment and alignment with reference models.
The presence of pharmaceuticals in the environment is causing problems in ecosystems, leading to impacts on human health. Researchers propose key points for a more sustainable pharmacy framework, including training professionals and promoting eco-prescribing.
A novel B-vHIT classification framework improves discrimination between benign vestibular neuritis and potentially life-threatening central causes of vertigo. The new protocol incorporates multi-parameter analysis to create a discriminative classification model with superior specificity and sensitivity.
A study finds that peptide display on AAV1 capsid enhances the efficacy of adeno-associated virus-mediated gene therapy for the inner ear, allowing for more efficient targeting of specific sensory cell populations. This breakthrough could lead to effective treatments for various cochlear and vestibular pathologies.
The 9th HKU Quarterly Forum on Chinese Economy provided insights into China's macroeconomy, key issues emerging from the development of artificial intelligence, trade, and finance matters. The event highlighted the importance of strengthening domestic demand while advancing technology to drive economic momentum.
Scientists have discovered evidence of repeating climate cycles operating every few years to decades during the Cryogenian glaciation, a period known as Snowball Earth. The findings suggest that these cycles were likely exceptions rather than the norm, and were triggered by small patches of open ocean in the tropics.
Researchers at HKU have uncovered an alternative system for gene regulation in eukaryotic cells, which adapts to the absence of DNA methylation. The study reveals how histone modifications can take over to maintain precise control of gene expression.
A research team from Hefei Institutes of Physical Science grew a high-entropy garnet-structured oxide crystal, achieving enhanced laser performance at 2.8 μm. The material demonstrated strong potential as a gain medium for mid-infrared ultrashort-pulse lasers.
Large Language Models pose both benefits and challenges to academic integrity in biomedical research, enhancing efficiency and quality but also promoting misconduct and bias. To address these issues, this paper proposes solutions centered on ten core dimensions.
A rare case of hyperammonemic encephalopathy caused by 5-fluorouracil (5-FU) chemotherapy has been reported, highlighting the importance of monitoring neurological symptoms in patients receiving 5-FU. The patient's symptoms resolved after stopping 5-FU and administering lactulose and intravenous fluids.