Results 61 to 70 of about 41,629 (315)
Study on Nonlinear Dynamics Characteristic of Two-stage Planetary Gear Train
Jixie chuandong, 2020 The translation and torsion coupled strong nonlinear dynamics model of two-stage planetary gear transmission system is established， and the nonlinear factors such as time-varying meshing stiffness， tooth side clearance and meshing error are introduced ...
Xiaolu Leng +3 more
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Exocomets size distribution in the [Formula: see text] Pictoris planetary system. [PDF]
Sci Rep, 2022 Lecavelier des Etangs A +10 more
europepmc +1 more source
Beyond Earth: Resilience of Quasi‐2D Perovskite Solar Cells in Space
Advanced Materials, EarlyView.In the article (DOI: 10.1002/adma.202520433), Christoph Putz and co‐workers demonstrate rigid quasi‐2D perovskite solar cells operating in low Earth orbit, delivering stable power for more than 100 days under real‐space conditions. In‐orbit performance is correlated with extensive ground‐based thermal and proton‐irradiation studies on rigid and ...
Christoph Putz +17 more
wiley +1 more source
Oxygenation, Life, and the Planetary System during Earth's Middle History: An Overview. [PDF]
Astrobiology, 2021 Lyons TW +4 more
europepmc +1 more source
Transparent Perovskite Light‐Emitting Diodes with Conductive Oxide Top Electrodes
Advanced Materials, EarlyView.Transparent perovskite light‐emitting diodes (TrPeLEDs) enable simultaneous display and transparency, expanding application possibilities. Using a metal oxide buffer layer and pulsed laser deposition, TrPeLEDs with diverse compositions and architectures are demonstrated.
Michele Forzatti +11 more
wiley +1 more source
Analysis of Load Sharing Performance of Planetary Gear Reducer in Electric Vehicle Hub Motor
Jixie chuandong, 2017 As for the floating planetary gear reducer in hub motor,a dynamics equation of dual floating planetary transmission system is established,and then the calculation formula of load sharing coefficient is deduced.
Zhang Jiang, Qing Xunpeng, Chen Haoran
doaj
Advanced Materials, EarlyView.This work introduces an atomic‐level engineered bimetallic MOF Platform that resolves the inherent trade‐off between environmental stability and propulsion efficiency. By integrating robust Fe‐O bonds for hydrolysis resistance and enabling d‐orbital charge transfer (Fe3+→Cu2+) for enhanced photothermal conversion, the design achieves a highly durable ...
Senlin Rao +3 more
wiley +1 more source
Jixie qiangdu, 2018 Based on features and the principles of department of planetary gear kinematic,this thesis proposes a signal flow graph method to calculate the characteristic parameters of the complex planetary gear transmission system.
ZHOU XinTao +4 more
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Development of Laterally Graded X‐Ray Multilayer Optics
Advanced Materials Technologies, EarlyView.This work presents the development of laterally graded X‐ray multilayer optics with both constant and variable lateral gradients. By precisely controlling substrate speed profiles and mask design, these multilayers achieve highly accurate lateral gradients and excellent sagittal thickness uniformity, making them ideal for spectroscopy application at ...
Arindam Majhi +11 more
wiley +1 more source
Agriculture production as a major driver of the Earth system exceeding planetary boundaries
Ecology and Society, 2017 We explore the role of agriculture in destabilizing the Earth system at the planetary scale, through examining nine planetary boundaries, or "safe limits": land-system change, freshwater use, biogeochemical flows, biosphere integrity, climate change ...
Bruce M. Campbell +9 more
doaj +1 more source