Results 61 to 70 of about 392,508 (308)

Experimental Study on Pressure Drop Characteristic of Sing-phase and Two-phase Flow in Helical Cruciform Fuel Assembly

open access: yesYuanzineng kexue jishu
In the presented work, the pressure drop prediction models for the helical cruciform fuel assembly with single-phase and two-phase flow were established.
ZHANG Qi1, 2, , WANG Haoyu1, , ZHOU Yi1, HUANG Yongzhong1, ZHENG Lele1, LI Chenxi1, XIAO Yao2, GU Hanyang2
doaj   +1 more source

A review of developments in electrodes for regenerative polymer electrolyte fuel cells [PDF]

open access: yes, 2006
The design of electrodes for unitised regenerative polymer electrolyte fuel cells (URFC) requires a delicate balancing of transport media. Gas transport, electrons and protons must be carefully optimised to provide efficient transport to and from the ...
Harrison, DJ, Pettersson, J, Ramsey, BJ
core  

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

open access: yesAdvanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari   +4 more
wiley   +1 more source

Covalent Organic Frameworks for Photocatalytic CO2 Reduction: Metal Integration Principles, Strategies and Functions

open access: yesAdvanced Functional Materials, EarlyView.
Covalent organic frameworks (COFs) with metals have been recognized as versatile platforms for photocatalytic CO2 reduction (CO2PRR). Herein, an overview of metal integration strategies for COFs is systematically summarized. Regulatory mechanisms and structure–activity relationships between metal integration and COF‐based CO2PRR are emphasized.
Jie He   +5 more
wiley   +1 more source

Effect of enrichment of plate-type fuel assembly on fuel performance

open access: yesHe jishu
BackgroundThe enrichment of nuclear fuel may significantly influence the fuel performance of a reactor.PurposeThis study aims to explore the effect of U3Si2-Al plate-type fuel enrichment on its performance,MethodsThe fuel performance analysis code BEEs ...
YUE Zhiying   +7 more
doaj   +1 more source

Bio‐Inspired Molecular Events in Poly(Ionic Liquids)

open access: yesAdvanced Functional Materials, EarlyView.
Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
wiley   +1 more source

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

open access: yesAdvanced Functional Materials, EarlyView.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum   +5 more
wiley   +1 more source

Introductory measurements on the physical model of the VVER 440 nuclear reactor II. fuel cell assembly

open access: yesMATEC Web of Conferences, 2018
Qualitative and quantitative analysis of the relationship between the coolant temperature in the fuel cell assembly outlet and the mean coolant temperature profile in the thermocouple plane is required for safe and effective loading of nuclear fuel cells.
Závodný Zdenko   +5 more
doaj   +1 more source

Numerical Investigation on the Flow Characteristics in a 17 × 17 Full-Scale Fuel Assembly

open access: yesEnergies, 2020
In a previous study, several computational fluid dynamics (CFD) simulations of fuel assembly thermal-hydraulic problems were presented that contained fewer fuel rods, such as 3 × 3 and 5 × 5, due to limited computer capacity. However, a typical
Zihao Tian   +6 more
doaj   +1 more source

Micro-electroforming metallic bipolar electrodes for mini-DMFC stacks [PDF]

open access: yes, 2008
This paper describes the development of metallic bipolar plate fabrication using micro-electroforming process for mini-DMFC (direct methanol fuel cell) stacks.
Lee, J. -H., Shyu, R. F., Yang, H.
core   +1 more source

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