Results 71 to 80 of about 9,183 (293)

Elephant‐Skin‐Inspired Porous Cementitious Tiles with Programmable Crack Networks for Passive Cooling

Advanced Materials, EarlyView.
Elephant‐skin‐inspired crack networks are programmed in porous diatomaceous earth (DE)‐cement composites using substrate‐guided, stress‐concentration induced fracture. The resulting crack lattices act as capillary conduits that redistribute water, while the porous matrix stores moisture.
Qingya Huang, Kun‐Hao Yu, Ji Yoon Bae, Yunchan Lee, Dorit Aviv, Shu Yang   +5 more
wiley   +1 more source

Dissipation Efficiency in Turbulent Convective Zones in Low Mass Stars

, 2009
We extend the analysis of Penev et al. (2007) to calculate effective viscosities for the surface convective zones of three main sequence stars of 0.775Msun, 0.85Msun and the present day Sun.
D. Sasselov, F. Robinson, Gonczi, Goodman, Guenther, K. Penev, Landau, Meibom, Ogilvie, P. Demarque, Penev, Penev, Verbunt, Wu, Wu, Zahn, Zahn, Zahn   +17 more
core   +1 more source

On the formation of hot DQ white dwarfs [PDF]

, 2009
We present the first full evolutionary calculations aimed at exploring the origin of hot DQ white dwarfs. These calculations consistently cover the whole evolution from the born-again stage to the white dwarf cooling track.
A. D. Romero, A. H. Córsico, Althaus, Althaus, Burgers, Cassisi, Dufour, Dufour, E. García-Berro, Herwig, L. G. Althaus, M. M. Miller Bertolami, Magni, Unglaub   +13 more
core   +4 more sources

Multifunctional Alginate‐Based Films Reinforced With Ag‐ZnO/AgO/TiO2 Nanocomposites for Advanced Packaging and Biomedical Applications

Advanced Materials Interfaces, EarlyView.
Biodegradable polymeric films incorporated with a synergistic blend of metallic nanocomposites are developed and characterized. The films exhibit enhanced antibacterial activity against foodborne pathogens, demonstrating their potential as active materials for food packaging.
Adriana Dos Santos Silva, Davi Porfírio Da Silva, Alysson Nogueira Magalhães, Marcos Vinícius Dias Vermelho, Ângelo Márcio Leite Denadai, Anielle Christine Almeida Silva   +5 more
wiley   +1 more source

Fossil Signatures of Main-sequence Convective Core Overshoot Estimated through Asteroseismic Analyses

The Astrophysical Journal
Some physical processes that occur during a star's main-sequence evolution also affect its post-main-sequence evolution. It is well known that stars with masses above approximately 1.1 M _⊙ have well-mixed convective cores on the main sequence; however ...
Christopher J. Lindsay, J. M. Joel Ong, Sarbani Basu   +2 more
doaj   +1 more source

The Run of Superadiabaticity in Stellar Convection Zones. I. The Sun [PDF]

The Astrophysical Journal, 1997
The effect of adjustments to the superadiabatic layer (SAL) in a model of the Sun on the p-mode oscillation frequencies has been studied. Numerical simulations of solar convection by Kim and coworkers have shown that the usual mixing length approximation (MLA) overestimates the convective efficiency in the SAL.
Demarque, P., Guenther, David B., Kim, Y.-C   +2 more
openaire   +2 more sources

Microfluidic Engineering of Chitosan‐Coated Nanoemulsions for Controlled Release and Stability in Space Pharmaceutics

Advanced Materials Technologies, EarlyView.
Microfluidic engineering enables the fabrication of chitosan‐coated, melatonin‐loaded nanoemulsions with controlled release and enhanced physicochemical stability for space pharmaceutics. Interfacial biopolymer coating modulates droplet behavior under accelerated thermal stress and simulated microgravity.
Modupe Adebowale, Nguyen Van Duc Long, Philip M Williams, Volker Hessel   +3 more
wiley   +1 more source

Hot Stars with Hot Jupiters Have High Obliquities [PDF]

, 2010
We show that stars with transiting planets for which the stellar obliquity is large are preferentially hot (T_eff > 6250 K). This could explain why small obliquities were observed in the earliest measurements, which focused on relatively cool stars drawn
Anderson, Bowler, Chatterjee, Cochran, Collier Cameron, Eggleton, Fabrycky, Fabrycky, Howe, Hébrard, Irwin, Jenkins, Johnson, Latham, Levrard, Narita, Narita, Narita, Narita, Narita, Pinsonneault, Queloz, Queloz, Simpson, Triaud, Tripathi, Winn, Winn, Winn, Winn, Winn, Winn, Winn, Winn, Wolf, Yu   +35 more
core   +3 more sources

Magnetic Micro‐ and Nanorobots for Precision Thrombolysis: Design Strategies and Translational Challenges

Advanced Robotics Research, EarlyView.
Micro‐ and nanorobots for targeted thrombolysis. This perspective elaborates on the clinical indication of blood clot disorders and current limitations for treatment. As a novel, alternative solution, micro‐ and nanorobots can be used to treat and break down thrombi.
Joshua M. Mesfin, Yimo Yan, Nikola Cesarovic, Simone Schuerle   +3 more
wiley   +1 more source

Magnetic Field Evolution for Crystallization-driven Dynamos in C/O White Dwarfs

The Astrophysical Journal
We investigate the evolution of magnetic fields generated by the crystallization-driven dynamo in carbon–oxygen white dwarfs (WDs) with masses ≲1.05 M _⊙ .
Matias Castro-Tapia, Shu Zhang, Andrew Cumming   +2 more
doaj   +1 more source