Results 131 to 140 of about 481,445 (303)

Advanced Ceramics for Use as Fuel Element Materials in Nuclear Thermal Propulsion Systems [PDF]

open access: yes, 2012
With the recent start (October 2011) of the joint National Aeronautics and Space Administration (NASA) and Department of Energy (DOE) Advanced Exploration Systems (AES) Nuclear Cryogenic Propulsion Stage (NCPS) Program, there is renewed interest in ...
Allen, Lee R.   +2 more
core   +2 more sources

2D Co‐Mo‐Hydroxide‐Based Multifunctional Material for the Development of H2‐Based Clean Energy Technologies

open access: yesAdvanced Materials, EarlyView.
2D α‐Co(OH)2 interleaved with Mo species displays an appealing dual functionality for the production and use of green hydrogen.Mo incorporation greatly benefits the electrochemical behaviour in Oxygen Evolution Reaction for H2 production, while the magnetocaloric response at liquid H2 temperature paves the way for alternative cryogenic refrigerants ...
Daniel Muñoz‐Gil   +14 more
wiley   +1 more source

Evaluating the economic feasibility of thermal screens in New Zealand using a mathematical model : a thesis presented in partial fulfilment of requirements for the degree of Master of Horticultural Science in Horticultural Engineering at Massey University [PDF]

open access: yes, 1991
A mathematical model of the greenhouse environment was developed to ascertain the annual savings in heating expenditure achieved by thermal screens. Thirteen materials with thermal screening potential were investigated.
Newman, Todd Litchfield
core  

Modeling defect structure evolution in spent nuclear fuel container materials

open access: yes, 2017
Materials intended for disposal of spent nuclear fuel require a particular combination of physical and chemical properties. The driving forces and mechanisms underlying the material’s behavior must be scientifically understood in order to enable modeling at the relevant time- and length-scales.
openaire   +1 more source

POM‐Based Water Splitting Catalyst Under Acid Conditions Driven by Its Assembly on Carbon Nanotubes

open access: yesAdvanced Materials, EarlyView.
A newly‐engineered POM‐based electrocatalyst incorporating non‐innocent counter cations exhibits fast kinetics for either the OER or HER under strongly acidic conditions (1 m H2SO4), depending on whether it is assembled on carbon nanotubes (1@CNT) or physically mixed with them (1/CNT). In water‐splitting tests using a two‐electrode setup, these systems
Eugenia P. Quirós‐Díez   +8 more
wiley   +1 more source

Nanocrystals of zirconia- and ceria-based solid electrolytes: Syntheses and properties

open access: yesScience and Technology of Advanced Materials, 2007
Nano-effect on solid electrolytes that appears as a conductivity enhancement is expected as a way to develop or improve practical solid ionic devices, such as solid oxide fuel cells. Interfaces play a major role in the enhanced conductivity.
Takahisa Omata, Yuji Goto and Shinya Otsuka-Yao-Matsuo
doaj  

Atomistic Mechanisms Triggered by Joule Heating Effects in Metallic Cu‐Bi Nanowires for Spintronics

open access: yesAdvanced Materials, EarlyView.
Bi doped metallic Cu nanowires are promising for spintronics thanks to the stabilization of a giant spin Hall effect. However, heat resulting from current injection forces Bi to leave solution, forcing segregation into monoatomic decorations which evolve into coherent crystalline aggregates.
Alejandra Guedeja‐Marrón   +6 more
wiley   +1 more source

Effect of Atomic Layer Deposition of Ultra‐Thin Oxide on Reactivity and Durability of Perovskite Oxygen Electrodes

open access: yesAdvanced Materials, EarlyView.
This table of contents illustrates that the mechanism for mitigating Sr segregation depends strongly on the chemistry of the coating layer. HfO2 electrostatically stabilizes the surface by lowering the surface oxygen vacancies, which serve as the driving force for Sr migration. On the other hand, Al2O3 and Fe2O3 react with segregated Sr to form Sr‐Al‐O
Jongsu Seo   +8 more
wiley   +1 more source

POLYMER MATERIALS MODIFICATION FOR FUEL FARM EQUIPMENT

open access: yesНаучный вестник МГТУ ГА, 2016
The article considers the classification of methods and the modification directions of polymer materials for fuel farm equipment on the basis of elastic containers. The technological scheme of installation of gas-phase fluorination products from urethane
Yu. N. Rybakov
doaj  

Exploring the development of natural biopolymer (chitosan)-based proton exchange membranes for fuel cells: A review

open access: yesResults in Surfaces and Interfaces
Fuel cells use proton exchange membranes (PEMs) to transform chemical energy into electricity. PEMs are selective barriers that permeates protons, obstructing gases and other species like electrons.
Fayaz Ahmad Doobi, Fasil Qayoom Mir
doaj   +1 more source

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