Results 101 to 110 of about 2,943,104 (253)
Advanced Science, EarlyView.This work presents a magnetic‐bearing acoustic resonator that overcomes the thermodynamics limit of sound absorption. By introducing tunable negative stiffness, it achieves broadband low‐frequency absorption within a compact cavity, far exceeding the performance achievable by classic mass‐tuned designs.
Ying Hu +5 more
wiley +1 more source
Aerospace Medicine summary of South American tour
An Aerospace Medicine summary of South American ...
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Boston University School of Medicine catalog [PDF]
, 1897 Course catalog and informational material for the Boston University School of ...
Boston University School of Medicine
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Advanced Science, EarlyView.A flexible PDMS‐LATP polymer‐ceramic membrane creates lithium‐ion “superhighways” for rapid and selective extraction from complex brines. The amorphous PDMS matrix suppresses nonselective leakage and stabilizes the ceramic network, while LATP provides preferential Li+ conduction.
Xinxin Wei +12 more
wiley +1 more source
Hanggong uju uihakoejiPurpose: Our study’s goal was to evaluate the prevalence of abnormal pulmonary function among Republic of Korea Army rotary-wing pilots and to identify independent clinical risk factors and the utility of supplementary chest computed tomography (CT ...
Taeho Youn, Du Hyun Song
doaj +1 more source
Hanggong uju uihakoejiPurpose: This study investigated the prevalence of upper gastrointestinal (GI) diseases among Korea military pilots aged over 40 years using screening upper GI endoscopy, with the aim of providing foundational data to inform aviation medicine policies ...
Du Hyun Song, Hyun Jae Ko
doaj +1 more source
Advanced Science, EarlyView.A bio‐inspired bidirectional‐winding origami platform enables scalable and programmable deployable structures. Double axial folding inspired by earwig hindwings and Flasher‐based hybridization create modular multilayer architectures with diverse attainable winding angles under fixed boundary conditions.
Wenyao Zhang +5 more
wiley +1 more source
Hanggong uju uihakoejiPurpose: Cardiac conduction abnormalities detected on electrocardiography are often asymptomatic and considered benign. However, in aviation medicine, they required careful evaluation because of the potential risk of sudden in-flight incapacitation ...
Dong Hwan Ku, Du Hyun Song
doaj +1 more source
Boston University School of Medicine catalog [PDF]
, 1873 Course catalog and informational material for the Boston University School of ...
Boston University School of Medicine
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A Sustainable Bio‐Based Epoxy Thermoset as a High‐Performance Alternative to BPA‐Based Resins
Advanced Science, EarlyView.A rigid–flexible bio‐based epoxy network integrates soybean oil, lignin, and maleic anhydride to overcome the strength–toughness–sustainability trade‐off of conventional BPA epoxy. The thermoset delivers excellent performance as both a structural adhesive and a matrix for glass‐fabric composites, while enabling pH‐responsive degradation, environmental ...
Jiyun Qi +4 more
wiley +1 more source