Results 71 to 80 of about 1,256,521 (330)

Midbrain PAG Astrocytes Modulate Mouse Defensive and Panic‐Like Behaviors

open access: yesAdvanced Science, EarlyView.
Astrocytes in the midbrain periaqueductal gray (PAG) dynamically encode threat intensity and shape defensive action selection in mice. Real‐time Ca2+ imaging reveals robust astrocytic activation during predator odor and CO2 exposure. Aberrant astrocytic Ca2+ overactivation disrupts goal‐directed escape, biases behavior toward freezing, and induces ...
Ellane Barcelon   +10 more
wiley   +1 more source

Reduction of chromium oxides with calcium carbide during thestainless steelmaking process

open access: yesMetalurgija, 2015
An efficient reduction of chromium from slag requires an appropriate reduction agent for the given steelmaking technology. The usual slag reduction praxis consists of carbon injections and additions of ferrosilicon and aluminum.Reduction of chromium ...
B. Arh, F. Vode, F. Tehovnik, J. Burja
doaj  

Beneficial Effect of Pt and of Pre-Oxidation on the Oxidation Behaviour of an NiCoCrAlYTa Bond-Coating for Thermal Barrier Coating Systems [PDF]

open access: yes, 2011
The oxidation behaviour of a thermal barrier coating (TBC) system is a major concern as the growth of the thermally grown oxide (TGO) layer on the bondcoating creates stresses that greatly favour the thermal barrier spallation.
Monceau, Daniel   +4 more
core   +3 more sources

Transforming Grain‐Boundary Brittle Precipitates to Ductility Pathways in Complex Concentrated Alloy

open access: yesAdvanced Science, EarlyView.
By engineering graded BCC/L12 interfaces, brittle precipitates in a complex concentrated alloy enable sequential deformation, realizing gigapascal strength with >20% elongation to solve the strength‐ductility trade‐off. ABSTRACT Conventional wisdom holds that hard grain‐boundary (GB) precipitates embrittle structural alloys by acting as crack ...
Zhixin Li   +14 more
wiley   +1 more source

A metallurgical route to solar-grade silicon [PDF]

open access: yes
The aim of the process is to produce silicon for crystallization into ingots that can be sliced to wafers for processing into photovoltaic cells. If the potential purity can be realized, the silicon will also be applicable for ribbon pulling techniques ...
Schei, A.
core   +1 more source

Advanced Corneal Hydrogels: From Passive Replacement to Active Regeneration and Intelligent Interaction

open access: yesAdvanced Science, EarlyView.
This review charts the evolution of corneal hydrogels from passive replacements to active and intelligent systems, evaluating natural and synthetic materials while addressing design challenges such as transparency and strength. Advanced applications such as scarless wound healing, three‐dimensional bioprinting, and smart wearables are highlighted to ...
Xinwei Wang   +9 more
wiley   +1 more source

Multiscale study on the compressive performance of diverse solid waste backfill bodies

open access: yesGeomechanics and Geophysics for Geo-Energy and Geo-Resources
To create green, low-energy self-compacting backfill materials, this study utilizes aeolian sand, slag, red mud, and calcium carbide slag to prepare diverse solid waste backfill materials in synergy.
Hang Yin   +5 more
doaj   +1 more source

Artificial ripening on banana (Musa Spp.) samples: Analyzing ripening agents and change in nutritional parameters

open access: yesCogent Food & Agriculture, 2018
In recent years, the use of artificial fruit ripening agents has become prevalent mostly due to the commercial purposes. Different ripening agents are reported to be used to initiate the ripening process in fruits during off-seasons. However, the effects
Md. Nazibul Islam   +5 more
doaj   +1 more source

Tribolgy of selected ceramics at temperatures to 900 deg C [PDF]

open access: yes
Results of fundamental and focused research on the tribological properties of ceramics are discussed. The basic friction and wear characteristics are given for ceramics of interest for use in gas trubine, adiabatic diesel, and Stirling engine ...
Deadmore, D.   +3 more
core   +1 more source

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