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Updates every hour. Last Updated: 14-Oct-2025 00:11 ET (14-Oct-2025 04:11 GMT/UTC)
Experimental study of a novel long pulse-width plasma ignition system to expand lean ignition limit of kerosene air mixture
Tsinghua University PressFor decades, aerospace engineers have confronted the life-threatening challenge of reigniting aircraft engines in high-altitude, low-pressure environments. Traditional spark ignition systems, limited by short discharge time and low energy efficiency, consistently fail to ignite lean kerosene-air mixtures in some difficult conditions. Although, gliding arc plasma ignitor offers improvements, its dependence on external gas sources prevents compatibility with combustor wide flight envelopes. This critical bottleneck has impeded next-generation aerospace propulsion systems.
- Journal
- Chinese Journal of Aeronautics
GS-LASSO-based outlier detection and correction for Doppler velocity determination in urban areas
Tsinghua University PressPerformance of Global Navigation Satellite Systems (GNSS) in providing positioning, velocity estimation, and timing services in urban environments often suffers significant degradation due to multipath effects and Non-Line-of-Sight signal reception. Traditional Fault Detection and Exclusion methods face technical bottlenecks, including high computational complexity and insufficient exclusion accuracy caused by the complex and diverse nature of fault modes. This study proposed a novel fault detection and correction method for Doppler-observable-based velocity estimation: GS-LASSO (Grouping-Sparsity Least Absolute Shrinkage and Selection Operator). Experiment results demonstrated that the GS-LASSO method could provide high-precision velocity estimates at the decimeter-per-second (dm/s) level in complex urban environments with limited computational resources.
- Journal
- Chinese Journal of Aeronautics
New insights into hepatocellular carcinoma: Salvia miltiorrhiza compounds show promise
FAR Publishing LimitedPatients receiving anti-cancer treatment near end of life experience higher rates of hospitalization, ED and ICU use, and less utilization of hospice
University of Texas M. D. Anderson Cancer CenterPatients who receive systemic anti-cancer treatment near end of life are more likely to be hospitalized, go to the intensive care unit or emergency department, and are less likely to utilize hospice care in the final 30 days of life, according to researchers at The University of Texas MD Anderson Cancer Center. This pattern of care was observed in patients who received all types of systemic anticancer therapy, including cytotoxic chemotherapy, immunotherapy and targeted therapies. The findings were published today in the Journal of Clinical Oncology.
- Journal
- Journal of Clinical Oncology
Researchers use AI to predict the toll of concussions on student athletes over time
University of MichiganResearchers at the University of Michigan are using artificial intelligence to predict the health consequences that sport-related concussions might have on student athletes over the course of their college athletic careers.
- Journal
- Annals of Biomedical Engineering
- Funder
- U.S. Department of Defense, NCAA, National Science Foundation Research Fellowship Program, U-M Summer Undergraduate Research in Engineering Program, U-M's Rackham Graduate School.
New insights into grapevine’s vulnerability to cold stress
Nanjing Agricultural University The Academy of ScienceCold stress is a major environmental factor limiting grapevine cultivation, affecting yield, quality, and distribution.
- Journal
- Horticulture Research
Unlocking the genetic key to pear russet skin
Nanjing Agricultural University The Academy of ScienceFruit skin color is central to pear quality and market value, with russet skin offering both protection and unique appearance.
- Journal
- Horticulture Research
Thinking outside the box to fabricate customized 3D neural chips
The Korea Advanced Institute of Science and Technology (KAIST)Cultured neural tissues have been widely used as a simplified experimental model for brain research. However, existing devices for growing and recording neural tissues, which are manufactured using semiconductor processes, have limitations in terms of shape modification and the implementation of three-dimensional (3D) structures.
By "thinking outside the box," a KAIST research team has successfully created a customized 3D neural chip. They first used a 3D printer to fabricate a hollow channel structure, then used capillary action to automatically fill the channels with conductive ink, creating the electrodes and wiring. This achievement is expected to significantly increase the design freedom and versatility of brain science and brain engineering research platforms.
- Journal
- Advanced Functional Materials
- Funder
- National Research Foundation of Korea
RNA G-quadruplex (rG4) exacerbates cellular senescence by mediating ribosome pausing
Higher Education PressThis study uncovers a novel role of RNA G-quadruplex (rG4) structures in regulating translation and cellular senescence. By integrating ribosome profiling and rG4-RIP sequencing, the researchers reveal that rG4 structures within coding regions cause ribosome pausing, disrupt protein homeostasis, and accelerate senescence. The RNA helicase DHX9 is identified as a key factor that unwinds rG4 structures and maintains translational balance. These findings highlight rG4 stabilization as a potential driver of aging and age-related diseases, offering new therapeutic opportunities by targeting rG4 dynamics.
- Journal
- Protein & Cell