Results 81 to 90 of about 2,356 (246)
Jixie chuandong, 2015 The load sharing planetary gear speed-growth train for wind power generator is studied,which is composed of two stage planetary gear and one stage plane gear.The influence of external load excitation and time varying mesh stiffness is considered,and the ...
Wang Chunguang
doaj
AGRICULTURE IN A SOCIALIST CITY: Towards an Alter‐Urban Political Ecology
International Journal of Urban and Regional Research, EarlyView.Abstract Urban political ecology has developed as a critique of capitalist urbanization. This article develops the concept of alter‐urban political ecology to define urban environments emerging not from capitalist urbanization but from efforts to transform it. Drawing on archival research and ethnographic fieldwork in five urban farms in socialist Cuba,
Gustav Cederlöf
wiley +1 more source
Global Policy, EarlyView.ABSTRACT The European Union's proposed Space Law aims to establish a unified approach for sustainable space activities across the EU. While the EU's satellite constellations contribute to sustainability efforts, they can also have negative environmental impacts.
Elena Cirkovic, Vitali Braun
wiley +1 more source
Jixie chuandongA study on the load characteristics of the modified gear planetary gear systems is conducted to address the issue of uneven loads between planetary gears due to manufacturing and installation errors, which result in deviations between the radial and ...
Xu Pengpeng, Chen Lifeng, Zhao Yingjun
doaj
Global Policy, EarlyView.ABSTRACT This article examines the evolution of European Union (EU) space policy through the lens of historical institutionalism, highlighting how security and defence considerations have been incrementally integrated into a domain originally framed as civilian and scientific.
Gustavo G. Müller, Philip De Man
wiley +1 more source
Jixie chuandong, 2016 Taking the compound planetary gear train as research object,a nonlinear translation- torsion coupled dynamics model is established for compound planetary gear train considering the time- varying meshing stiffness,gear backlash and synthetic meshing ...
Zhou Lu +4 more
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neonSoilFlux: An R package for continuous sensor‐based estimation of soil CO2 fluxes
Methods in Ecology and Evolution, EarlyView.Abstract Accurate quantification of soil carbon fluxes is essential to reduce uncertainty in estimates of the terrestrial carbon sink. However, these fluxes vary over time and across ecosystem types and so, it can be difficult to estimate them accurately across large scales.
John Zobitz +11 more
wiley +1 more source
Goby gummies: A customizable and edible assay to quantify predation in aquatic ecosystems
Methods in Ecology and Evolution, EarlyView.Abstract Predation is a critical ecosystem process that shapes the structure and functioning of biological communities. However, due to its intermittent nature, fast pace and general unpredictability, predation is difficult to observe and quantify. Therefore, we commonly rely on indirect metrics or proxies of predation, which reflect the outcome of ...
Christopher R. Hemingson +2 more
wiley +1 more source
Jixie 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
Hydrodynamic bearing analysis of a planetary gear in a geared turbofan
, 2012 5. AVL Advanced Simulation Technologies International User Conference : 28.-30. Juni 2011, Graz, Österreich, ; Aachen : Publikationsserver der RWTH Aachen University 3 S. + 21 Folien (2012).
Jacobs, Georg +2 more
openaire +2 more sources