Results 131 to 140 of about 2,138,066 (306)

Coordinated Multi‐Component Gradient Engineering of Catalyst Layers for Advanced Polymer Electrolyte Fuel Cells

open access: yesAdvanced Functional Materials, EarlyView.
This work presents a continuous linear gradient catalyst layer design, a general strategy for improving membrane electrode assemblies across electrochemical devices. Fabricated via a dual‐nozzle spray coating method, the architecture controls the Pt/carbon ratio, ionomer content and ionomer type across the catalyst layer, enhancing proton conduction ...
Shangwei Zhou   +15 more
wiley   +1 more source

Sustainable Planning of Land Use Changes in farming areas under ecological protection [PDF]

open access: yes, 2010
Land use has been changing in the last decades because of agricultural intensification and land abandonment which implies deterioration in the optimum habitat structure and quality.
Brasa-Ramos, A.   +3 more
core   +1 more source

Three‐dimensional Antimony Sulfide Based Flat Optics

open access: yesAdvanced Functional Materials, EarlyView.
This work presents the development of a grayscale electron beam lithography (g‐EBL) method for fabricating antimony trisulfide (Sb2S3) nanostructures with customizable 3D profiles. The refractive index of g‐EBL patterned Sb2S3 is determined based on the synergy of genetic algorithm and transfer matrix method.
Wei Wang   +18 more
wiley   +1 more source

Exploring the spatial distribution characteristics and formation mechanisms of Hakka folk settlements: a case study of Hakka traditional architecture in southeastern China

open access: yesHumanities & Social Sciences Communications
Traditional settlements are an important cultural landscape as carriers of regional culture. In order to explore the spatial distribution characteristics and causes of Hakka folk settlements, Hakka traditional architecture in southeastern China was ...
Youliang Chen   +4 more
doaj   +1 more source

Rubber based agroforestry systems: Options for smallholders [PDF]

open access: yes, 2008
Representing more than 80% of the total rubber areas, smallholder rubber plantations and its system, in Indonesia, are very unique in the world. The system, often referred to as "jungle rubber" is multi-strata in nature, and rubber is not the only crop ...
Joshi, Laxman   +3 more
core  

PEDOT‐Based Eutectogel Electrode Arrays for Enhanced High‐Resolution Electrogastrography: Fabrication, Stability, and Wearable Performance

open access: yesAdvanced Functional Materials, EarlyView.
Here, we present a high‐density PEDOT eutectogel electrode array for enhanced body surface gastric mapping. Silver electrodes are blade‐coated onto flexible substrates, followed by electrogelation of PEDOT:PSS and the deposition of a PEDOT:LS eutectogel.
Christopher Slaughter   +8 more
wiley   +1 more source

Development status and prospect of cooling water in power plants

open access: yesGongye shui chuli
Cooling water accounts for the majority of water usage in power plants. With the aggravation of water scarce all over the world, adaptive actions to optimize cooling system and improve water efficiency of cooling process are required. This review aims to
LIU Xin   +4 more
doaj   +1 more source

Design of a solar system for hot water heating in a family house [PDF]

open access: yes, 2014
Práce se zabývá solárním ohřevem teplé vody v rodinném domě. Úvodní kapitoly se věnují klasickým způsobům ohřevu teplé vody a solární energii. Navazující část práce se zabývá solárním ohřevem a jeho výhodami a nevýhodami oproti klasickým zdrojům a také ...
Reiskup, Matěj
core  

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou   +8 more
wiley   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha   +18 more
wiley   +1 more source

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