Results 51 to 60 of about 11,561,357 (305)
Pitting damage levels estimation for planetary gear sets based on model simulation and grey relational analysis [PDF]
, 2011 The planetary gearbox is a critical mechanism in helicopter transmission systems. Tooth failures in planetary gear sets will cause great risk to helicopter operations.
Gu, Fengshou +3 more
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Planetary pictures: historicizing environmental and climate sciences in the Anthropocene
BJHS ThemesHow should historians of environmental and climate sciences respond to the Earth's move from the blank canvas to a foreground feature of ‘big-picture’ scholarship? This article highlights three crucial themes for histories of science in the Anthropocene:
Thomas Simpson, James Poskett
doaj +1 more source
Os mercados, os seus saberes e as suas incertezas
Revista Crítica de Ciências Sociais, 2002 Such as we know it, globalization does not solve the problems or address the questions of living together on the Earth. Thus, in the current context, the struggle for democracy involves three essential aspects: the reinvention of the emancipatory power ...
João Caraça
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Disentangling Bulk and Surface Contributions to Charge and Discharge Fading in High‐Voltage LiCoO2
Advanced 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
The attenuation of seismic waves in dry and saturated rocks [PDF]
, 1979 Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1979.MICROFICHE COPY AVAILABLE IN ARCHIVES AND LINDGREN.Vita.Bibliography: leaves 378-399.by David H.
Johnston, David Hervey
core
Qualified Hope and the Ethics of Planetary Boundaries
ReligionsThe present essay explores the way theologies can contribute to the discussion of the ethics of the “planetary boundaries” framework and its rhetorical proposal for a ‘safe operating space’.
Forrest Clingerman
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Coordinated Architectural and Chemical Reinforcement in the Crushing Mandible of a Soldier Termite
Advanced 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
Chitin‐Derived Carbon‐Metal Functional Materials
Advanced 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
Experimental study of seismic scattering by a penny-shaped crack [PDF]
, 1979 Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept.
Scheimer, James Francis
core
Advanced Functional Materials, EarlyView.A hybrid additive manufacturing platform integrates direct droplet writing of metallic composite with VAT photopolymerization to fabricate architected soft magnetic composites. This approach enables microscale patterning of high‐viscosity materials for programmable actuators, adaptive fluidic devices, and switchable adhesives, offering tunable ...
Yeowon Yoon +4 more
wiley +1 more source