Results 51 to 60 of about 158,729 (282)

Поиск географии и путей формирования мифоритуальной символики железа у населения Северного Причерноморья по данным археологии / Research of the geography and ways of formation of mythological and ritual symbolism of the iron at the population of the Northern Black Sea coast according to archaeological data

open access: yesTyragetia, 2016
Based on archaeological evidence about ancient nonferrous and ferrous metallurgy, from the Bronze Age to the Middle Ages, the author discusses perspectives in search of possible ways of forming of mythological and sacral aspects of iron symbolism in ...
Nikolay Tupchienko
doaj  

Relations between the Aegean and Apulia in the Late Bronze Age: the evidence from an archaeometric study of the pottery at Roca (Lecce) [PDF]

open access: yes, 2010
Guglielmino has given a recent account of the pottery from Rocavecchia, highlighting its importance in understanding relations between the Aegean and southern Italy in the Late Bronze Age.
Guglielmino, R.   +5 more
core  

Lone‐Pair‐Induced Lattice Distortion in Lead‐Free Hybrid Perovskites for High‐Performance Nanogenerators

open access: yesAdvanced Functional Materials, EarlyView.
A lead‐free tin‐based hybrid perovskite is designed in which stereochemically active lone‐pair electrons on tin distort the crystal lattice and break its symmetry. Blended into a flexible polymer, the material converts pressure into electricity at milliwatt‐scale power density and continues working far below freezing, powering a commercial wristwatch ...
Majid Haji Bagheri   +12 more
wiley   +1 more source

Molecularly Dissipative Liquid Crystal Elastomer Foams for Impact and Vibration Attenuation

open access: yesAdvanced Functional Materials, EarlyView.
Liquid crystal elastomer foams integrate cellular deformation with mesogen reorientation to create a dual‐scale energy dissipation mechanism. Progressive pore collapse absorbs mechanical loads, while stress‐induced mesogen reorientation provides additional damping, resulting in reduced impact transmission and broadband suppression of vibrational ...
Subi Choi   +5 more
wiley   +1 more source

Utilizing the Metastability of Spidroins as a Strategy for Improving Mechanical Properties of Biomimetic Spider Silk Fibers

open access: yesAdvanced Functional Materials, EarlyView.
Phase transitions are central for the assembly of recombinant silk proteins into fibers. Soluble protein can transition into condensed states such as condensates and gels. These states are metastable and evolve in a time‐dependent way. Metastability depends on the protein sequence, and this relationship can be used to enhance the mechanical properties ...
Fred‐Eric Sammalisto   +5 more
wiley   +1 more source

Influences of wood-crafting on technological development in Middle to Late Bronze Age Southern England

open access: yes, 2014
This study explores the relationship between wood-crafting activity and technological development in metal tools during the Late-Middle and Late Bronze Age in Southern England.
Lee, Robert William
core   +1 more source

Profilometric Analysis of Worn Surface of Bronze, Iron and Iron Composite Samples, by Pin-on-Disk Method

open access: yesThe Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, 2013
In this study are presented the results of profilometric analysis for the wear of bronze materials, cast iron and composite materials. These materials were tested under dry wear conditions, using "pin-on-disk" method on a UMT-2 tribotester at a room ...
Virgil ILIUŢĂ   +3 more
doaj  

Self‐Powered, Ultra‐Sensitive InGaAs/ITO Nanowire Radial Junction Infrared Photodiode for Low Flux Imaging at Room Temperature

open access: yesAdvanced Functional Materials, EarlyView.
This study reports a self‐powered InGaAs nanowire photodetector achieving single‐photon‐level sensitivity in the shortwave infrared at non‐cryogenic temperatures. The device demonstrates high‐speed imaging capabilities even under extremely low‐flux conditions.
Kosala Dhanawansha   +10 more
wiley   +1 more source

In Situ Interfacial Assembly of Dynamic Semi‐Interpenetrating Biopolymer Networks for Robust and Mechanically Adaptive Droplet Interfaces

open access: yesAdvanced Functional Materials, EarlyView.
A dynamic interfacial semi‐interpenetrating polymer network is constructed by sequential assembly of β‐sheet‐rich SF and CS‐RL. The SF framework provides mechanical strength, while dynamically associated CS‐RL enables local rearrangement, allowing droplets to rapidly reconfigure without loss of interfacial integrity.
Yaping Zhang   +7 more
wiley   +1 more source

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