Results 111 to 120 of about 104,797 (298)

A study of helicopter interior noise reduction [PDF]

The interior noise levels of existing helicopters are discussed along with an ongoing experimental program directed towards reducing these levels. Results of several noise and vibration measurements on Langley Research Center's Civil Helicopter Research ...
Clevenson, S. A., Howlett, J. T.
core   +1 more source

In Situ Electrochemical Activation of Pseudo‐Layered NbS3 via Interlayer Expansion and Dual Redox for High Mg‐Ion Storage

Advanced Science, EarlyView.
A quasi‐1D pseudo‐layered NbS3 cathode for magnesium‐ion batteries can be created through electrochemically induced interlayer expansion. The widened ion‐transport channels enable fast magnesium ion diffusion and unlock coupled cationic‐anionic redox chemistry.
Pengcheng Jing, Atsushi Inoishi, Chengcheng Zhao, Eiichi Kobayashi, Peng Ren, Isaac Abrahams, Duncan H. Gregory   +6 more
wiley   +1 more source

Interior and Climate Modeling of the Venus Zone Planet TOI-2285 b

The Astronomical Journal
As the discovery of exoplanets progresses at a rapid pace, the large number of known planets provides a pathway to assess the stellar and planetary properties that govern the climate evolution of terrestrial planets.
Emma L. Miles, Colby Ostberg, Stephen R. Kane, Ondrea Clarkson, Cayman T. Unterborn, Tara Fetherolf, Michael J. Way, Sadie G. Welter   +7 more
doaj   +1 more source

Interiors and atmospheres of the outer planets [PDF]

This theoretical/observational project constrains structure of outer planet atmospheres and interiors through observational data. The primary observation tool is through observations of occultations of stars by outer solar system objects, which yield ...
Hubbard, W. B.
core   +1 more source

Active Metamaterials with Tunable Shear Nonreciprocity and Nonlinear Dynamics

Advanced Science, EarlyView.
Active gear‐based mechanical metamaterials enable simultaneous control of translational and torsional stiffnesses by 30–100×, break shear reciprocity under positive versus negative loads, broadly tune resonant frequencies, and offer programmable dynamic responses.
Xin Fang, Miao Yu, Dianlong Yu, Li Cheng
wiley   +1 more source

How internal structure shapes the metallicity of giant exoplanets

Astronomy & Astrophysics
Context. The composition and internal structure of gas giant exoplanets encode key information about their formation and evolution. Aims. We investigate how different assumed interior structures affect the inferred bulk metallicity and its correlation ...
Peerani Lorenzo, Howard Saburo, Helled Ravit   +2 more
doaj   +1 more source

Chitosan‐Carbon Dot Composite Materials Form a Leaf Surface Barrier to Mitigate the Enrichment and Invasion of Nanoplastics: From Leaf Interface to Systemic Response

Advanced Science, EarlyView.
Foliar spraying of CS‐CDs can form a film on the leaves of Brassica rapa, effectively reducing the enrichment and absorption of PS in the leaves, while increasing the biomass and nutrient content of the plants. In addition, CS‐CDs can also enrich the interfoliar microbial community and activate the plant's own defense metabolic pathways.
Beibei Zhao, Mei Li, Mengjiao Fan, Chuanhuan Liu, Jie Jiang, Jia Song, Yingzhu Liu   +6 more
wiley   +1 more source

Diversity of Low-mass Planet Atmospheres in the C–H–O–N–S–Cl System with Interior Dissolution, Nonideality, and Condensation: Application to TRAPPIST-1e and Sub-Neptunes

The Astrophysical Journal
A quantitative understanding of the nature and composition of low-mass rocky (exo)planet atmospheres during their evolution is needed to interpret observations.
Dan J. Bower, Maggie A. Thompson, Kaustubh Hakim, Meng Tian, Paolo A. Sossi   +4 more
doaj   +1 more source

Chemical differentiation of a convecting planetary interior: Consequences for a one-plate planet such as Venus [PDF]

Chemically depleted mantle forming a buoyant, refractory layer at the top of the mantle can have important implications for the evolution of the interior and surface.
Hess, P. C., Parmentier, E. M.
core   +1 more source

Ultrafast, High‐Capacity Uranium Harvesting From Seawater via a Hierarchically Porous Polymer Electrode

Advanced Science, EarlyView.
A hierarchically porous AOPIM‐CNT electrode enables uranium harvesting from seawater via adsorption‐promoted electrodeposition. Rapid diffusion and selective adsorption are coupled with electrochemical crystallization and spontaneous detachment, creating a self‐refreshing process that sustains high‐capacity, continuous extraction from ultradilute ...
Zejun Song, Zhenggong Wang, Lele Guo, Zhining Wang, Keming Wan, Ting Zhang, Wangxi Fang, Jian Jin   +7 more
wiley   +1 more source