Results 71 to 80 of about 306,656 (307)

Television noise reduction device [PDF]

open access: yes, 1975
A noise reduction system that divides the color video signal into its luminance and chrominance components is reported. The luminance component of a given frame is summed with the luminance component of at least one preceding frame which was stored on a ...
Gordon, B. L., Stamps, J. C.
core   +1 more source

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

open access: yesAdvanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

open access: yesAdvanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai   +6 more
wiley   +1 more source

Visual Analysis of the Writing System in the Stamps of the Pahlavi Era [PDF]

open access: yesپیکره
Introduction: The visual elements and the writing system in the stamps of the Pahlavi dynasty reflect cultural-ideological symbols and signal the political, economic, and social relations of that era.
Samaneh Ahmadi, Amir Farid
doaj   +1 more source

Vertex dynamics in finite two dimensional square spin ices

open access: yes, 2010
Local magnetic ordering in artificial spin ices is discussed from the point of view of how geometrical frustration controls dynamics and the approach to steady state.
Budrikis, Zoe   +2 more
core   +1 more source

Thermal stability of metastable magnetic skyrmions: Entropic narrowing and significance of internal eigenmodes [PDF]

open access: yes, 2018
We compute annihilation rates of metastable magnetic skyrmions using a form of Langer's theory in the intermediate-to-high damping (IHD) regime. For a N\'eel skyrmion, a Bloch skyrmion, and an antiskyrmion, we look at two possible paths to annihilation ...
Desplat, L.   +3 more
core   +4 more sources

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak   +3 more
wiley   +1 more source

INTERNATIONAL FOOD STAMPS [PDF]

open access: yes
Food Security and Poverty,
Peterson, Willis L.
core   +1 more source

Strategies to Help Low-Wage Workers Advance: Implementation and Early Impacts of the Work Advancement and Support Center (WASC) Demonstration [PDF]

open access: yes, 2009
Work Advancement and Support Center (WASC) is an innovative strategy to help low-wage workers increase their incomes by stabilizing employment, improving skills, increasing earnings, and easing access to work supports.
Betsy L. Tessler   +2 more
core  

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

open access: yesAdvanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee   +7 more
wiley   +1 more source

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