Results 141 to 150 of about 4,923,437 (352)

Osservazioni su un'enciclpedia di fine 800

Ratio Mathematica, 2005
missing
F. Di Gennaro, F. Eugeni, R. Parroni
doaj  

Mechanistic comparison between Phase-Locked loop and reactive power-based synchronization for the grid connected converters under a weak grid

International Journal of Electrical Power & Energy Systems
For grid-connected converters (GCC), the synchronization unit (SU) is indispensable for the vector current control (VCC). Usually, the phase-locked loop (PLL) is employed as SU.
Tong Zhao, Chi Zhang, Chao Wu, Yong Wang
doaj   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

Advanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat, Guido Barale, John Stavridis, Ehsan Norouzi, Jin‐Yoo Suh, Dong‐Ik Kim, Luca Iuliano, Abdollah Saboori   +7 more
wiley   +1 more source

Antecedents of Effective Decision Making: A Cognitive Approach [PDF]

Decision-making effectiveness has been associated with how well managers adapt their cognitive style to task requirements. In this paper, theories regarding decision-making under uncertainty and the use of judgment and intuition are reviewed and ...
Lemmink,Jos, Ouwersloot,Hans, Riel,Allard C.R.,van   +2 more
core   +1 more source

A new solid-state logarithmic radiometer [PDF]

, 1970
Combination of temperature-compensated logarithmic amplifiers and p-i-n photodiodes operating in zero-bias mode provides lightweight radiometer for detecting spectral intensities encompassing more than three decades over a range of at least 300 to 800 ...
Burrous, C. N., Deboo, G. J., Page, W. A., Whiting, E. E.   +3 more
core   +1 more source

Resistance Rapid Heating of Aluminum Coatings in an Extreme High Vacuum–Adequate Atmosphere for Hot Stamping

Advanced Engineering Materials, EarlyView.
The subject of this work is the development of a corrosion‐protective coating on steel sheets for form hardening. Rapid heating in an extreme high vacuum (XHV)‐adequate atmosphere is a useful method to prevent oxidation during alloying of 22MnB5 and aluminum to obtain a metallurgical bonding.
Lorenz Albracht, Alexander Schnettger, Ulrich Holländer, Sven Hübner, Bernd‐Arno Behrens, Hans Jürgen Maier   +5 more
wiley   +1 more source

Dielectric Barrier Discharge Plasma Deoxidation of Natively Oxide Layer of Copper Powders in a Fluidized Bed

Advanced Engineering Materials, EarlyView.
This paper presents a novel approach to reducing oxide layers on metal powders using low‐temperature hydrogen dielectric barrier discharge plasmas at atmospheric pressure. Unlike conventional hydrogen‐plasma reductions, the powders do not contact the plasma directly.
Shukang Zhang, Annett Wollmann, Thomas Gimpel, Alfred P. Weber   +3 more
wiley   +1 more source

Surface Tension Measurement of Ti‐6Al‐4V by Falling Droplet Method in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this article, the temperature‐dependent surface tension of free falling, oscillating Ti‐6Al‐4V droplets is investigated in both argon and monosilane doped, oxygen‐free atmosphere. Droplet temperature and oscillation are captured with one single high‐speed camera, and the surface tension is calculated with Rayleigh's formula.
Johannes May, Finn‐Lennard Janthur, Lena Kreie, Michael Müller, Sarah Seffer, Nick Schwarz, Jörg Hermsdorf, Thomas Hassel, Stefan Kaierle, Ludger Overmeyer   +9 more
wiley   +1 more source

Tillage and herbicide effects on weed interference, greenhouse gases emission and crops yield in a direct-seeded rice - wheat - greengram cropping system

Journal of Agriculture and Food Research
Conservation agriculture (CA) holds great opportunity for sustainable intensification of rice-wheat system in South Asia, but weed interference poses the most significant challenge for widespread adoption of CA, particularly CA-based rice-wheat system. A
Sonaka Ghosh, Anup Das, Saurabh Kumar, Rachana Dubey, Kirti Saurabh, Ved Prakash, Rohan Kumar Raman, Rishi Raj, Rakesh Kumar, Anamika Barman, Tapas Kumar Das, Ujjwal Kumar, Ashutosh Upadhyaya   +12 more
doaj   +1 more source