Results 61 to 70 of about 9,589 (216)
Handbuch Elektrotechnik: Grundlagen und Anwendungen für Elektrotechniker [PDF]
, 2016 Dieses Handbuch stellt in systematischer Form alle wesentlichen Grundlagen der Elektrotechnik in der komprimierten Form eines Nachschlagewerkes zusammen. Es wurde für Studenten und Praktiker entwickelt.
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Anwendung einer Switched-System Modellierung zur Stabilitätsanalyse von zeitkontinuierlichen singlebit ΣΔ-Wandlern [PDF]
Advances in Radio Science, 2011 Im Hinblick auf die Optimierung von zeitkontinuierlichen ΣΔ-Wandlern ist ein genaues Verständnis der dynamischen Eigenschaften des Systems von essentieller Bedeutung.
S. Stegemann +4 more
doaj +1 more source
How Effective Are Cleaners With “Effective Microorganisms”?
Journal of Surfactants and Detergents, Volume 28, Issue 6, Page 1283-1295, November 2025.ABSTRACT Microbial‐based cleaning products containing active microorganisms, such as Bacillus spores and “Effective Microorganisms” (EM)—a blend of lactic acid bacteria, photosynthetic bacteria, and yeast—are marketed for their potential to clean and displace pathogens. This study evaluated the efficacy of EM‐based cleaners by analyzing their microbial
Marc‐Kevin Zinn +5 more
wiley +1 more source
Absolventenreport Elektrotechnik Ergebnisse einer Untersuchung zum Berufsuebergang von Absolventen des Studiengangs Elektrotechnik des Pruefungsjahrgangs 1988/89 [PDF]
, 1993 Ziel der Berichtes ist es, den Uebergang von Elektrotechnikern in das Beschaeftigungssystem zu untersuchen. Dabei geht es vor allem darum, 'Einstellungen, Wuensche und Perspektiven sowie die Uebergangsphase und den Berufsstart von Elektroingenieuren ...
Bundesministerium fuer Bildung und Wissenschaft, Bonn (Germany) +2 more
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Nature Communications, 2020 The fundamental bandgap E g of a semiconductor—often determined by means of optical spectroscopy—represents its characteristic fingerprint and changes distinctively with temperature. Here, we demonstrate that in magic sized II-VI clusters containing only
Franziska Münzer +7 more
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Impact of Parasitic Conductive Interfaces on the DC and RF Performance of GaN‐on‐GaN HEMTs
physica status solidi (a), Volume 222, Issue 22, November 2025.GaN‐on‐GaN HEMTs suffering from a parasitic conductive interface show a power added efficiency drop from an expected 50 % to 15 %. The interface forms on GaN wafers prior to epitaxy due to Si contamination to absorb RF power, introduce propagation loss and loading effects, reduce gain by 50 %, and fmax and Pout by 40 % compared to GaN‐on‐SiC HEMTs ...
Amer Bassal +6 more
wiley +1 more source
Allgemeine Grundlagen der Elektrotechnik, Elektrophysiologie und Elektropathologie [PDF]
, 1909 ALLGEMEINE GRUNDLAGEN DER ELEKTROTECHNIK, ELEKTROPHYSIOLOGIE UND ELEKTROPATHOLOGIE Allgemeine Grundlagen der Elektrotechnik, Elektrophysiologie und Elektropathologie (1) (-
Boruttau, Heinrich L. Mann
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Sensitivity analysis of waveguide eigenvalue problems [PDF]
Advances in Radio Science, 2011 We analyze the sensitivity of dielectric waveguides with respect to design parameters such as permittivity values or simple geometric dependencies. Based on a discretization using the Finite Integration Technique the eigenvalue problem for the wave ...
N. Burschäpers +3 more
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Decreased noise figure measurement uncertainty in Y factor method [PDF]
Advances in Radio Science, 2013 Almost always noise figure is measured today by using a matched noise source delivering two different but known noise temperatures (Y factor method). In commercially available noise sources these temperatures are characterized by the excess noise ratio ...
I. Gaspard
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Analgesic effects of platelet‐rich fibrin (PRF): A systematic review
Periodontology 2000, Volume 99, Issue 1, Page 132-184, October 2025.Abstract Background Platelet‐rich fibrin (PRF), a second‐generation autologous platelet concentrate, has gained significant interest for its anti‐inflammatory and regenerative characteristics. While its role in tissue healing is well‐recognized, the analgesic potential of PRF remains under‐investigated.
Nathan E. Estrin +6 more
wiley +1 more source