Results 81 to 90 of about 747,735 (301)

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff   +9 more
wiley   +1 more source

MODEL FOR THE PROTECTION OF SMALL-SIZE GROUND TARGETS FROM RADIOMETRIC PASSIVE-ACTIVE DETECTION SYSTEMS

open access: yesРадіоелектронні і комп'ютерні системи, 2017
A generalized model is developed for protection of small-size ground targets from radiometric passive-active systems of millimeter range. Methods and means to reduce effectiveness of object detection on the earth's surface background are discussed. It is
Геннадий Геннадиевич Осиновый   +1 more
doaj   +1 more source

Improving Gold/Gold Microcontact Performance and Reliability Under Low-Frequency AC Through Circuit Loading [PDF]

open access: yes, 2016
This paper investigates the performance and reliability of microcontacts under low-frequency and low-amplitude ac test conditions. Current microcontact theory is based on dc tests adapted to RF applications.
Coutu, Ronald A., Jr., Laurvick, T.
core   +2 more sources

Assessing Altered Coating Adhesion on Plasma‐Deoxidized Surfaces Under Oxygen‐Free Conditions

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates the effectiveness of atmospheric pressure plasma pretreatment in modifying silicon and stainless steel surfaces to improve adhesion. Argon‐hydrogen plasma increases surface roughness and improves adhesion strength, whereas pure argon results in smoother surfaces and structural changes.
Selina Raumel   +6 more
wiley   +1 more source

Research on Safety Design Technology of High-power Lithium Ion Traction Battery System for Locomotive and EMU

open access: yes机车电传动, 2020
The application characteristics of lithium-ion power battery systems in the field of rail transit was introduced. The safety principles and requirements of high-power lithium-ion power batteries in locomotives and EMU were briefly introduced.
Changfu PENG, Pinghua WANG, Guofu HE
doaj  

Distributed photonic instrumentation for smart grids [PDF]

open access: yes, 2013
Photonic sensor networks possess the unique potential to provide the instrumentation infrastructure required in future smart grids by simultaneously addressing the issues of metrology and communications.
Beaumont, Phil   +6 more
core   +1 more source

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

THE ANALYSIS OF FIRE ENGINEERING AND ADMINISTRATIVE CONTROL AT BUILDING X UNIVERSITY Y YEAR 2018

open access: yesThe Indonesian Journal of Occupational Safety and Health, 2019
Jakarta Provincial Fire and Rescue Agency mentioned that the capital approximately has 900 high building, however only 20 % of them possessed adequate safety precaution.
Fandita Tonyka Maharani   +2 more
doaj   +1 more source

Metal Oxides

open access: yesMetals, 2020
Oxide materials in bulk and thin film form, and metal oxide nanostructures exhibit a great variety of functional properties which make them ideal for applications in solar cells, gas sensors, optoelectronic devices, passive optics, catalysis, corrosion ...
Maria Luisa Grilli
doaj   +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

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