Results 41 to 50 of about 7,493,826 (258)

Disentangling Bulk and Surface Contributions to Charge and Discharge Fading in High‐Voltage LiCoO2

open access: yesAdvanced Functional Materials, EarlyView.
High‐voltage operation of LiCoO2 accelerates capacity fading through bulk and surface degradation. By introducing a LiTaO3 coating to selectively suppress surface degradation, bulk and surface contributions to charge and discharge fading are decoupled.
Hyungjoon Moon   +6 more
wiley   +1 more source

轮边减速器行星齿轮结构动力学分析

open access: yesJixie chuandong, 2011
Using 3D modeling software,geometric model of the wheel planetary gear reducer structure is established,based on heavy-duty truck wheel reducer planetary gear structure and the loading characteristics,a planetary gear structure of three-dimensional ...
王铁, 柴少彪
doaj  

From Tides to Currents: Unraveling the Mechanism that Powers WASP-107b’s Internal Heat Flux

open access: yesThe Astrophysical Journal
The sub-Jovian exoplanet WASP-107b ranks among the best-characterized low-density worlds, featuring a Jupiter-like radius and a mass that lies firmly in the sub-Saturn range.
Konstantin Batygin
doaj   +1 more source

Imaging polarimetry of planetary and proto-planetary nebulae [PDF]

open access: yes, 1997
Optical imaging polarimetry has been performed on a small sample of objects which are associated with that stage of stellar evolution occurring between the Asymptotic Giant Branch and full Planetary Nebula. Three such systems are considered, specifically,
Bowlzer, S.L., Bowlzer, S. L.
core  

Coordinated Architectural and Chemical Reinforcement in the Crushing Mandible of a Soldier Termite

open access: yesAdvanced Functional Materials, EarlyView.
The crushing mandible of a soldier termite withstands substantial biting loads despite lacking mineral. Its cuticle is partitioned: convex teeth pair hardness and zinc enrichment with aligned chitin fibers for contact durability, while stiffer concave regions between teeth carry bending loads.
Andrew Tran Nguyen   +16 more
wiley   +1 more source

Study on Assembly Process of a Large Wind Power Gearbox

open access: yesJixie chuandong, 2016
Aiming at the three assembly process difficulties of pin hole connection between cases,planetary wheel bearing,planetary gear train of wind power increasing gearbox with the technical structure of planetary closed differential transmission,the deeply ...
You Jing, Zou Junwei, Huang Junqiong
doaj  

Most High-density Exoplanets Are Unlikely to Be Remnant Giant Planet's Cores

open access: yesThe Astrophysical Journal Letters
Some exoplanets have much higher densities than expected from stellar abundances of planet-forming elements. There are two theories—metal-rich formation hypothesis and naked core hypothesis—that explain how formation and evolution can alter the ...
Zifan Lin, Saverio Cambioni, Sara Seager
doaj   +1 more source

Chitin‐Derived Carbon‐Metal Functional Materials

open access: yesAdvanced Functional Materials, EarlyView.
Functional carbon materials are synthesized from combination of biopolymer (chitin) and iron precursors. The resultant material exhibits superior surface area and adsorptive properties compared to carbon materials synthesized directly from pure chitin.
Herry Fang   +7 more
wiley   +1 more source

APPLE: An Evolution Code for Modeling Giant Planets

open access: yesThe Astrophysical Journal
We introduce APPLE , a novel planetary evolution code designed specifically for the study of giant exoplanet and Jovian planet evolution in the era of Galileo, Juno, and Cassini. With APPLE , state-of-the-art equations of state for hydrogen, helium, ice,
Ankan Sur   +4 more
doaj   +1 more source

The Ionization Structure of Planetary Nebulae [PDF]

open access: yesSymposium - International Astronomical Union, 1993
Ground-based and satellite spectrophotometric observations of emission-line intensities over the spectral range 1400–7200 Å have been made in 5 or more positions in a total of 9 planetary nebulae.
openaire   +1 more source

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