Results 111 to 120 of about 1,673,815 (341)

Virome and Experimental Analysis Reveal Tryptophan‐Like Dissolved Organic Matter Contributes to the Persistence of Plant Viruses in River Water

open access: yesAdvanced Science, EarlyView.
Tryptophan‐like dissolved organic matter (Try‐like DOM), a key component of organic matter in river ecosystems, demonstrates significant protective effects against plant viruses. The protective mechanism operates via a “swimming firewall” mode, whereby free Try‐like DOM attenuates ultraviolet (UV) radiation and scavenges reactive oxygen species ...
Yujie Wang   +7 more
wiley   +1 more source

Exploring Fermi's Paradox using an Intragalactic Colonization Model [PDF]

open access: yesarXiv
We explore Fermi's Paradox via a system of differential equations and using simulations of dispersal and interactions between competing interplanetary civilizations. To quantify the resources and potentials of these worlds, three different state variables representing population, environment, and technology, are used.
arxiv  

Dissolution of Spent Lithium‐Ion Battery Cathode Materials: Overlooked Significance of Aluminum Impurities

open access: yesAdvanced Science, EarlyView.
During the mechanical crushing of retired lithium‐ion batteries, aluminum foil from current collectors may penetrate NCM active crystals through frictional contact, forming more stable Al─O bonds. The dissolution behavior of critical metals in NCM cathodes will be influenced to varying extents by different mechanisms in various hydrometallurgical ...
Kang Liu   +5 more
wiley   +1 more source

Geo-engineering Gone Awry: A New Partial Solution of Fermi's Paradox [PDF]

open access: yesJournal of the British Interplanetary Society, vol. 57, pp. 209-215 (2004), 2003
Another partial solution of Fermi's famous paradox is proposed, based on our increased understanding of geophysics, geo-engineering and climatology. It has been claimed in the recent astrobiological literature (for instance, in the recent controversial "rare Earth" theory of Ward and Brownlee), that geological activity of a terrestrial planet is an ...
arxiv  

The Civil Engineering Institute as a Leader in Training of Specialists in the Field of Civil Engineering

open access: yesProcedia Engineering, 2015
AbstractThe Civil Engineering Institute is a leader in training of students in civil engineering programs. Strong leadership of the Polytechnical University among other universities which implement the training of students in civil engineering programs in the eyes of students and their parents evolved gradually.
openaire   +2 more sources

Energy Dispersion Induced Precisely Tunable Friction of Graphitic Interface

open access: yesAdvanced Science, EarlyView.
This study introduces a novel approach to precisely tune nanoscale friction on monolayer graphene using coupled DC/AC electric fields. Combining experiments (contact‐mode electrostatic force microscopy) and simulations (generalized Prandtl–Tomlinson model), vertical resonance is shown to disperse horizontal energy, reducing friction while preserving ...
Zhao Liu   +6 more
wiley   +1 more source

The language of architecture and civil engineering

open access: yesEuropean Journal of Higher Education, 2012
Critical study and review of the book The Language of Architecture and Civil Engineering with a complete analysis of a new genre.
openaire   +2 more sources

Self‐Oscillation in Active Wires with Asymmetric Willis‐Type Viscosity

open access: yesAdvanced Science, EarlyView.
This study suggests a self‐oscillation strategy enabled by a new set of material parameters, namely the asymmetric Willis‐type viscosity, to bias and independently control oscillation mode shapes as well as frequencies. The exemplified active wire can benefit the development of autonomous materials to construct soft motors, agitators, pumps, and ...
Xingbo Pu   +3 more
wiley   +1 more source

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