Results 51 to 60 of about 207,565 (299)

Degradation Mechanisms in PEM Water Electrolysis: Diagnosis and Impact

open access: yesAdvanced Materials Technologies, EarlyView.
This review provides an analysis of degradation mechanisms in proton electrolyte membrane water electrolyzers (PEMWE), focusing on all key components. It discusses diagnostic and measurement techniques for evaluating degradation, less‐studied mechanisms, and an expert survey.
Annik Bernhardt   +11 more
wiley   +1 more source

Influence of southern hemispheric biomass burning on midtropospheric distributions of nonmethane hydrocarbons and selected halocarbons over the remote South Pacific [PDF]

open access: yes, 1999
Aircraft measurements of nonmethane hydrocarbons (NMHCs) and halocarbons were made over the remote South Pacific Ocean during late August-early October 1996 for NASA's Global Tropospheric Experiment (GTE) Pacific Exploratory Mission-Tropics A (PEM ...
Albercook, GM   +13 more
core  

On the Complexity of List Ranking in the Parallel External Memory Model [PDF]

open access: yes, 2014
We study the problem of list ranking in the parallel external memory (PEM) model. We observe an interesting dual nature for the hardness of the problem due to limited information exchange among the processors about the structure of the list, on the one ...
A. Aggarwal   +5 more
core   +1 more source

Additive Manufacturing of Ni‐Based Thermoelectric Materials for Waste Heat Recovery

open access: yesAdvanced Materials Technologies, EarlyView.
Thermoelectric generators convert waste heat into electricity but are constrained by conventional fabrication. Here, laser powder bed fusion enables direct printing of customised n‐type Cu60Ni40 and p‐type Ni90Cr10 legs. The assembled module achieves 0.8% efficiency at ΔT = 419 K, demonstrating scalable additive manufacturing of eco‐friendly, design ...
Karolin Amstein   +6 more
wiley   +1 more source

Spin‐State Modulation of Atomic Iron Sites Enables Efficient CO2 Electroreduction in Acid Medium

open access: yesAngewandte Chemie, EarlyView.
An axial oxygen ligand was added to shift the spin state of the single‐atom Fe site from low to medium spin. This change reduces the interfacial interaction with H3O+ and decreases the *CO desorption energy, thus enhancing CO2RR in acidic media.
Shanhe Gong   +13 more
wiley   +2 more sources

Handling Complexity in Virtual Battery Development with a Simplified Systems Modeling Approach

open access: yesWorld Electric Vehicle Journal
Lithium-ion battery systems are a core component for electric mobility, which has become increasingly important in the last decade. The rising number of new manufacturers and model variants also increases competitive pressure.
Achim Kampker   +4 more
doaj   +1 more source

Helix Alignment, Chevrons, and Edge Dislocations in Twist‐Bend Ferroelectric Nematics

open access: yesAdvanced Science, EarlyView.
The recently discovered twist‐bend ferroelectric nematic (NTBF) is the new member of the multiferroic family, representing a fluid with an oblique helicoidal (heliconical) periodic structure of spontaneous electric polarization. The work presents a thorough exploration of the material properties of this phase, how the periodic modulation of ...
Bijaya Basnet   +8 more
wiley   +1 more source

Bayesian estimation of the hydraulic and solute transport properties of a small-scale unsaturated soil column

open access: yesJournal of Hydrology and Hydromechanics, 2016
In this study the hydraulic and solute transport properties of an unsaturated soil were estimated simultaneously from a relatively simple small-scale laboratory column infiltration/outflow experiment.
Moreira Paulo H. S.   +3 more
doaj   +1 more source

Role of Work Experience, Work Motivation and Educational Background on Teacher Performance at Vocational School

open access: yesJurnal Pendidikan dan Kewirausahaan, 2023
Teacher performance is very necessary for the progress of the nation and this of course relies on the teacher. This of course requires special assessment and attention.
Budi Sulistiyo Nugroho   +4 more
doaj   +1 more source

Beach response due to the pressure equalization modules (PEM) system [PDF]

open access: yes, 2009
Coastal erosion is a significant problem with dramatic effects on the coastline. There is an urgent need to introduce new and cost-effective measures that can mitigate the impacts on the shoreline.
Ab. Razak, Mohd. Shahrizal
core  

Home - About - Disclaimer - Privacy