Results 71 to 80 of about 139,585 (296)

Tough, Ductile, and Strong Hard‐Soft Cementitious Composite Enabled by Multi‐Material Additive Manufacturing

Advanced Materials, EarlyView.
Drawing inspiration from the layered hard‐soft architecture found in sea sponges, this work establishes a new framework for architected cementitious composites (ACC) through multi‐material additive manufacturing (MMAM) process. The integration of mortar and elastomer phases into layered architectures enables synergistic toughening mechanisms, including
Aimane Najmeddine, Shashank Gupta, William Makinen, Zayvinn Lin, Krystal Delnoce, Reza Moini   +5 more
wiley   +1 more source

Understanding Operando Water Management in Hydroxide‐Exchange‐Membrane Fuel Cells

Advanced Materials Interfaces, EarlyView.
Effective water management is vital for high‐performance hydroxide‐exchange‐membrane fuel cells. Using a custom water‐flux station, this study quantifies how membrane thickness, microporous layers, and operating conditions dictate internal water transport.
Catherine M. Weiss, Shiyi Wang, Brian P. Setzler, Yushan Yan, Adam Z. Weber   +4 more
wiley   +1 more source

Some aspects of metallic ion chemistry and dynamics in the mesosphere and thermosphere [PDF]

The relationship between the formation of sporadic layers of metallic ion and the dumping of these ions into the upper mesosphere is discussed in terms of the tidal wind, classical (i.e., windshear) and other more complex, perhaps highly nonlinear layer ...
Mathews, J. D.
core   +1 more source

Insights into the nature of northwest-to-southeast aligned ionospheric wavefronts from contemporaneous Very Large Array and ionosondes observations

, 2012
The results of contemporaneous summer nighttime observations of midlatitude medium scale traveling ionospheric disturbances (MSTIDs) with the Very Large Array (VLA) in New Mexico and nearby ionosondes in Texas and Colorado are presented.
Cohen, Cosgrove, Cosgrove, Cotton, Emmert, Helmboldt, Helmboldt, Hernández-Pajares, J. F. Helmboldt, Kassim, Kelley, Ogawa, Park, Perkins, Shiokawa, Shiokawa, Tsugawa, Tsunoda, Yokoyama   +18 more
core   +1 more source

Mechanostimulatory Cues Determine Intestinal Fibroblast Fate and Profibrotic Remodeling in a Physiodynamic Human Gut‐on‐a‐Chip

Advanced Science, EarlyView.
A healthy gut barrier shields underlying fibroblasts from luminal shear forces, illustrating that “good fences make good neighbors.” Barrier damage exposes fibroblasts to shear stress, inducing cell death and the emergence of stress‐adapted, profibrotic fibroblasts. Sustained shear exposure promotes the formation of stiff aggregates of mechanoadapative
Soyoun Min, Nam Than, Yong Cheol Shin, Elif G. Ertugral, Chandrasekhar R. Kothapalli, Olumuyiwa Awoniyi, Hyun Jung Kim   +6 more
wiley   +1 more source

Mechanical Overloading‐Induced Nanomineral Crystal Perturbation from the Osteochondral Interface: A Potential Initiator of Osteoarthritis

Advanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Nan Jiang, Rong Ren, Zhan Su, Jiahao Zhou, Pinyin Cao, Sicheng Zhang, Zhen Li, Chao Li, Songsong Zhu   +8 more
wiley   +1 more source

Lithiophilic Current Collector Without Interfacial Penalty in Zero‐Excess Lithium Metal Batteries

Advanced Science, EarlyView.
Bilayer lithiophilic coatings are introduced to overcome the structural fragility of conventional single‐layer current collectors in zero‐excess Li‐metal batteries (ZE‐LMBs). By integrating density functional theory with electrochemical analyses, the Ag‐outer/Pt‐inner configuration enables uniform Li deposition, robust SEI formation, and persistent ...
Jiyeon Seo, Sangseob Lee, Seojin Jeon, Minhong Lim, Hyegang Koo, Seung‐Tae Hong, Woosun Jang, Aloysius Soon, Hongkyung Lee   +8 more
wiley   +1 more source

Direct Observational Evidence of the Mesoscale Gravity Wave Modulations on Low‐Latitude Sporadic E Layer

Geophysical Research Letters
Sporadic E (Es) layer plays essential role in ionosphere‐atmosphere coupling. Theoretical simulations show that the atmospheric gravity waves (GWs) in the lower thermosphere are the main modulatory source on Es dynamics at small spatial scales and short ...
Junyi Wang, Xinan Yue, Xu Zhou, Yihui Cai, Feng Ding, Jorge L. Chau, David C. Fritts, Juha Vierinen, Alan Z. Liu, Baiqi Ning   +9 more
doaj   +1 more source

Meteor matter interaction with the Earth's atmosphere and the ionospheric E-region structure [PDF]

The exploration of the ionospheric E region is a pressing problem, both in the applied and fundamental studies. Results are presented of an investigation: (1) to estimate the meteor ionization contribution to the night time E layer and influx; (2) to ...
Alimov, O.
core   +1 more source

Palaeolithic extinctions and the Taurid Complex

, 2010
Intersection with the debris of a large (50-100 km) short-period comet during the Upper Palaeolithic provides a satisfactory explanation for the catastrophe of celestial origin which has been postulated to have occurred around 12900 BP, and which ...
Asher, Asher, Babadzhanov, Babadzhanov, Babadzhanov, Babadzhanov, Beech, Boroviçka, Brown, Campbell-Brown, Chyba, Clarke, Clube, Denning, Desvoivres, Di Sisto, Dubietis, Faith, Firestone, Firestone, Franzén, Gill, Gladman, Grady, Harris, Haynes, Hughes, Ishiguro, Jenniskens, Jenniskens, Jenniskens, Kasuga, Kennett, Kresák, Kresák, Levasseur-Regourd, Luu, Mahaney, McBride, Morbidelli, Napier, Napier, Porubc̆an, Porubc̆an, Reach, Sekanina, Steel, Steel, Stuart, Terentjeva, Toon, Trigo-Rodrigues, W. M. Napier, Whipple, Wiegert, Zook, Öpik, Štohl   +57 more
core   +1 more source