Results 81 to 90 of about 21,523 (310)

Single Pair of Weyl Points Evolve From Spin Group‐Protected Nodal Line in Half‐Metallic Ferromagnet V3S4

open access: yesAdvanced Functional Materials, EarlyView.
A spin group (SG)‐based mechanism is proposed to realize a single pair of Weyl points. PT‐symmetric nodal lines (NLs) persist under T‐breaking, protected by the combination of SG and P symmetry. When considering spin‐orbit coupling, the SG‐protected NL will split into Weyl points, which will also induce anomalous transport phenomena arising from ...
Shifeng Qian   +6 more
wiley   +1 more source

Ex-ante and ex-post adaptation: Farmers’ fertilizer strategies for extreme weather events in China

open access: yesClimate Risk Management
This study investigates farmers’ fertilizer strategies as ex-ante and ex-post adaptations to extreme weather events in China. Using plot-level data from 778 maize farmers across three provinces collected in 2015 and 2018, we employ two-way fixed effects ...
Yueqing Ji   +4 more
doaj   +1 more source

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

open access: yesAdvanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan   +9 more
wiley   +1 more source

On Ex Ante Contractualism

open access: yesJournal of Ethics and Social Philosophy, 2018
Ex ante contractualism holds that in situations involving risk we ought to act in accordance with principles that license the action that satisfies the strongest individual claim, where those claims are a function of the expected value that a given policy gives each person ex ante. I here challenge ex ante contractualism on contractualist grounds.
openaire   +2 more sources

Estimating an Ex Ante Cost Function for Belgian Arable Crop Farms [PDF]

open access: green, 2009
Kristiana Hansen   +9 more
openalex   +1 more source

Entre el activismo y el olvido ante los ex braceros y sus familias [PDF]

open access: gold, 2023
María Elena Rivera Heredia   +5 more
openalex   +1 more source

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