Results 101 to 110 of about 125,489 (316)
Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework
Advanced Functional Materials, EarlyView.The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu +13 more
wiley +1 more source
Survey of highly non-Keplerian orbits with low-thrust propulsion
, 2011 Celestial mechanics has traditionally been concerned with orbital motion under the action of a conservative gravitational potential. In particular, the inverse square gravitational force due to the potential of a uniform, spherical mass leads to a family
Biggs, James +9 more
core +1 more source
MicromachinesBased on the long-stator permanent magnet linear synchronous motor (PMLSM), motor structures with different pole–slot ratios are designed by changing the distribution of armature windings.
Jing Bai, Lei Zhang, Yu Xu
doaj +1 more source
Advanced Functional Materials, EarlyView.A compostable PGS soft surgical robot with interchangeable modules integrates transient Mo tactile and Si thermal sensors for dual feedback. The device preserves its function after clinical‐grade sterilization, demonstrates stable actuation and cardiac tissue grasping with real‐time in vivo pulsatile monitoring, and biodegrades post‐use with soil‐safe,
Minseong Chae +27 more
wiley +1 more source
Semi-analytical solution for the optimal low-thrust deflection of near-Earth objects
, 2009 This paper presents a semi-analytical solution of the asteroid deviation problem when a low-thrust action, inversely proportional to the square of the distance from the sun, is applied to the asteroid.
Vasile, M. +5 more
core +1 more source
Salt Tectonics of the Chernyshev Swell, Timan-Pechora Basin: Structure and Georesource Potential
GeoresursyThe structure of the Chernyshev Swell is one of the main mysteries of the structural geology of the Timan-Pechora Basin. This fold-thrust zone is characterized by a set of features, including the significant remoteness of the Ural orogen, a high degree ...
K. O. Sobornov, I. P. Korotkov
doaj +1 more source
Advanced Functional Materials, EarlyView.A bilayer “Anchor‐and‐Seal” passivation strategy using EDAI2 and 4MeO‐PEAI effectively mitigates surface defects in vacuum‐processed perovskite films through synergistic hydrogen bonding and Lewis base coordination. This approach optimizes interfacial energy alignment and suppresses non‐radiative recombination, enabling vacuum‐deposited p‐i‐n ...
Mohammadhossein Kohan +4 more
wiley +1 more source
Non-Keplerian orbits using low thrust, high ISP propulsion systems
, 2009 The technology of high ISP propulsion systems with long lifetime and low thrust is improving, and opens up numerous possibilities for future missions.
Bosquillon de Frescheville, Francois +13 more
core
PERFORMANCE OF 3D PRINTED CONVENTIONAL AND TOROIDAL PROPELLER FOR SMALL MULTIROTOR DRONES
Journal of Industrial Design and Engineering Graphics, 2023 This paper presents a study on the design, fabrication, and performance evaluation of a quadcopter with toroidal propellers manufactured using 3D printing technology.
Gabriel ION, Ionel SIMION
doaj
Advanced Functional Materials, EarlyView.Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg +6 more
wiley +1 more source