Results 71 to 80 of about 500,833 (298)

Universal control scheme for powerful high-voltage MOS inverters eliminating the thyristor effect

open access: yesТехнологія та конструювання в електронній апаратурі, 2005
The proposed approach to designing powerful high-frequency voltage inverters makes it possible to improve their operational reliability while expanding the limits of supply voltages and conversion frequencies.
G. I. Gavrilyuk   +3 more
doaj  

Thermodynamic Analysis of the Second Fluid Brayton Cycle for Scramjet Engine

open access: yesEnergies
The burning chamber wall of the ramjet engine is facing an extremely thermal environment during normal conditions. Thermal protection measures must be taken on the wall surface of the combustion chamber.
Jiamao Luo   +5 more
doaj   +1 more source

Helium line detections from ELDWIM at 1.4 GHz

open access: yes, 2011
Helium line observations towards 11 Galactic positions using Westerbork Synthesis Radio Telescope(WSRT) have been reported. These observations were made towards nearby positions where already hydrogen lines were detected at sufficiently high intensity ...
Anderson   +13 more
core   +1 more source

2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics

open access: yesAdvanced Functional Materials, EarlyView.
2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit   +5 more
wiley   +1 more source

Obtaining effective cathodoluminescent structures based on film technology

open access: yesТехнологія та конструювання в електронній апаратурі, 2008
A technological route has been developed and process parameters have been selected for the serial production of thin-film cathodoluminescent structures used in high-resolution information display devices.
L. F. Kovalenko   +3 more
doaj  

Effects of a New Triple-alpha Reaction on X-ray Bursts of a Helium Accreting Neutron Star

open access: yes, 2012
The effects of a new triple-$\alpha$ reaction rate (OKK rate) on the helium flash of a helium accreting neutron star in a binary system have been investigated.
Fynbo   +7 more
core   +1 more source

The Role of Ultra‐Thin Buffer Layers for Achieving Ultra‐Low Dark Currents in Single‐Component Organic Photodetectors

open access: yesAdvanced Functional Materials, EarlyView.
Here, SubNc single‐component organic photodiodes (SC‐OPDs) are investigated, which achieve highly competitive performance metrics, including high EQE, ultra‐low JD, and high specific detectivity (D*). This study emphasizes the critical role of an organic buffer layer in studying the interface energetics and effects to achieve state‐of‐the‐art ...
Anncharlott Kusber   +12 more
wiley   +1 more source

Minimization of error in an integral pressure transducer with a separating membrane

open access: yesТехнологія та конструювання в електронній апаратурі, 2006
The design of an integral pressure transducer (IPT) with a separating membrane (SM) for measuring pressure in aggressive liquids and liquids with solid inclusions has been investigated.
G. G. Babichev   +5 more
doaj  

Advantages and disadvantages of substitution of helium as carrier gas in gas chromatography by hydrogen. Part II. - Retention time and selectivity.

open access: yesKvasný průmysl, 2013
Gas chromatography often uses helium, hydrogen, and nitrogen as carrier gases. The most common carrier gas is helium since it provides good separations, is inert, and is safe to use.
Tomáš HORÁK   +3 more
doaj   +1 more source

Graphene Nanosheet‐Based Mixed Proton‐Electron Conducting Membranes for Efficient Hydrogen Purification

open access: yesAdvanced Functional Materials, EarlyView.
A monolayer graphene/phosphoric‐acid mixed proton‐electron conducting membrane combines proton‐conducting nanoconfined acid channels with electron‐conducting graphene nanosheets for efficient high‐temperature hydrogen purification. The membrane achieves nearly 100% H2/CO2 selectivity and 69 GPU hydrogen permeance at 250°C, arising from synergistic ...
Kaiqiang He   +8 more
wiley   +1 more source

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