Results 151 to 160 of about 837,486 (317)

Formació laboral. 'Formación laboral'

open access: yes, 1997
ESP
Agràs Estalella, Jordi   +2 more
openaire   +1 more source

Child Labor Legislation [PDF]

open access: green, 1902
Florencé Kelley
openalex   +1 more source

Active Fabric Origami Enabled by Digital Embroidery of Magnetic Yarns

open access: yesAdvanced Materials, EarlyView.
This study demonstrates a scalable textile manufacturing process that fabricates active origami fabrics (AFO) via digital embroidery of magnetic yarns. The programmable AFO exhibits reversible 2D and 3D transformations under magnetic fields, enabling functionalities such as altering surface roughness and linear actuation.
Haiqiong Li   +3 more
wiley   +1 more source

Hydrogel‐Based Vat Photopolymerization of Ceramics and Metals with Low Shrinkages via Repeated Infusion Precipitation

open access: yesAdvanced Materials, EarlyView.
This work introduces an in situ precipitation strategy for the hydrogel‐based vat photopolymerization of architected ceramics and metals with reduced shrinkages and improved densities. Repeated infusion‐precipitation significantly increases metal loading within the hydrogels, which improves part quality after thermal conversion.
Yiming Ji   +3 more
wiley   +1 more source

Passively Ultra Cooling Patch Enabling High‐Efficiency Power‐Water Cogeneration

open access: yesAdvanced Materials, EarlyView.
Photovoltaics are the most viable solar energy technology. This work introduces an ultra‐cooling patch (UCP) for passive thermal management of PV, achieving a 28% increase in power density and a water production rate of 2.2 L day−1. The enhancement results from the aligned channels and configurable heat transfer pathways of the UCP, which significantly
Zhengyi Mao   +15 more
wiley   +1 more source

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