Results 91 to 100 of about 747,735 (304)

Dynamic Testing of Cold Gas Sprayed Bipolar Plates–Porous Transport Layer Coating System in Proton Exchange Membrane Water Electrolysis

open access: yesAdvanced Engineering Materials, EarlyView.
Through direct application of porous transport layer (PTL) on the bipolar plate (BPP) with thermal spraying, the interfacial contact resistance is improved. With the cold gas sprayed BPP–PTL coating system, a proton exchange membrane water electrolysis cell with a cell voltage of Ucell = 1.9 V can be operated up to i = 2.5 A/cm2 in a dynamic mode ...
Kirsten Bobzin   +5 more
wiley   +1 more source

Tax Constitutional Questions in “Obamacare”: National Federation of Independent Business v. Sebelius in Light of Citizens United v. Federal Election Commission and Speiser v. Randall: Conditioning a Tax Benefit on the Nonexercise of a Constitutional Right [PDF]

open access: yes, 2013
[Excerpt] “The phrase “Tax Constitutional Questions” may seem to be an oxymoron or at least an interesting juxtaposition somewhat akin to the phrase “passive activity” derived from Section 469 of the Internal Revenue Code, which is familiar to tax ...
Dorocak, John R.
core   +1 more source

Enhanced Multi-Qubit Phase Estimation in Noisy Environments by Local Encoding

open access: yes, 2019
The first generation of multi-qubit quantum technologies will consist of noisy, intermediate-scale devices for which active error correction remains out of reach. To exploit such devices, it is thus imperative to use passive error protection that meets a
Aolita, Leandro   +9 more
core   +1 more source

Development of Sustainable MgO–C Refractories Using MgO–C Recyclates and a Novel Eco‐Friendly Fructose–Tannin Binder Crosslinked With Citric Acid

open access: yesAdvanced Engineering Materials, EarlyView.
This study develops sustainable MgO–C refractories using recycled materials and eco‐friendly fructose–tannin binders. The enhanced performance of citric acid as a cross‐linker and functional additives on mechanical and thermomechanical properties was examined. Characterization included strength tests, immersion trials, and microstructural and inclusion
Dinesh K. Gunasekar   +7 more
wiley   +1 more source

Novel Pressure Control Equipment for High Speed EMUs

open access: yes机车电传动, 2012
Different from the common active or passive pressure protection devices, novel pressure control equipment for high speed EMUs adopted dual-motor driving device with both active and passive pressure protection functions to implement pressure control ...
RENGuang-qiang
doaj  

ANALYSIS OF THE EFFECTIVENESS OF PASSIVE FIRE PROTECTION MEASURES

open access: yesChemical Engineering Transactions, 2009
Not available.
G. Landucci   +3 more
doaj   +1 more source

Enhanced Strength and Corrosion Resistance of Ti‐13Nb‐12Ta‐10Zr‐4Sn Alloy by Aging Treatment

open access: yesAdvanced Engineering Materials, EarlyView.
This work systematically investigates the effect of aging treatment on mechanical properties and corrosion behavior of vacuum arc‐melted Ti‐13Nb‐12Ta‐10Zr‐4Sn alloy. Owing to the increased α″ martensite, strength and corrosion resistance were significantly enhanced by aging treatment.
Yuhua Li   +5 more
wiley   +1 more source

How long can a quantum memory withstand depolarizing noise?

open access: yes, 2009
We investigate the possibilities and limitations of passive Hamiltonian protection of a quantum memory against depolarizing noise. Without protection, the lifetime of a single qubit is independent of N, the number of qubits composing the memory.
Alastair Kay   +4 more
core   +1 more source

Copper Nanocrystallization in Anodic Oxide Films of Ti–Cu‐Based Bulk Metallic Glass and Its Effect on the Corrosion Resistance and Cytocompatibility

open access: yesAdvanced Engineering Materials, EarlyView.
Viktoriia Shtefan, Thorgund Nemec, Ute Hempel, Annett Gebert and coworkers demonstrate that anodic treatment of Ti–Cu‐based metallic glass in a nontoxic pyrophosphate electrolyte forms a protective bilayered Ti/Zr‐oxide film enriched with Cu nanocrystals.
Viktoriia Shtefan   +8 more
wiley   +1 more source

Evaluations of Space Shielding [PDF]

open access: yes
A general method of evaluating the efficiency of space vehicle shielding is developed and used to compare various active and passive systems for protection against ionizing radiation.
Dow, Norris F.   +2 more
core   +1 more source

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