Results 1 to 10 of about 2,642,886 (311)

Increasing Light Load Efficiency in Phase-Shifted, Variable Frequency Multiport Series Resonant Converters

open access: yesIEEE Access, 2023
Multiport power conversion topologies provide the capability of multiple independent converters with a single transformer having multiple windings (i.e., ports) potentially increasing power densities and enabling flexible (and bidirectional) power ...
Thomas Langbauer   +5 more
doaj   +1 more source

Statistical Methods for Degradation Estimation and Anomaly Detection in Photovoltaic Plants

open access: yesSensors, 2021
Photovoltaic (PV) plants typically suffer from a significant degradation in performance over time due to multiple factors. Operation and maintenance systems aim at increasing the efficiency and profitability of PV plants by analyzing the monitoring data ...
Vesna Dimitrievska   +6 more
doaj   +1 more source

Exploring the potential for an evolutionarily conserved role of the taste 1 receptor gene family in gut sensing mechanisms of fish

open access: yesAnimal Nutrition, 2022
In this study, we investigated the transcriptional spatio-temporal dynamics of the taste 1 receptor (T1R) gene family repertoire in seabream (Sparus aurata [sa]), during larval ontogeny and in adult tissues.
Anna Rita Angotzi   +4 more
doaj   +1 more source

Tissue-expression pattern of elovl4 genes in Sparus aurata and Solea senegalensis: from larvae to adult

open access: yesAquaTechnica, 2021
Very long-chain (˃ C24) fatty acids (VLC-FA) play critical roles during early development of vertebrates, since these compounds are accumulated in the rapidly forming neural tissues, ensuring their normal function. The functionality of VLC-FA has aroused
Miguel Torres-Rodríguez   +4 more
doaj   +1 more source

Hyers-Ulam-Rassias Stability of Generalized Derivations [PDF]

open access: yes, 2006
The generalized Hyers--Ulam--Rassias stability of generalized derivations on unital Banach algebras into Banach bimodules is established.Comment: 9 pages, minor changes, to appear in Internat. J. Math.
Moslehian, Mohammad Sal
core   +5 more sources

Luteinizing hormone plasma levels in male European sea bass (Dicentrarchus labrax L.) feeding diets with different fatty acid composition

open access: yesCiencias Marinas, 2004
 This work analyzes the plasma level variations of luteinizing hormone (LH) during the reproductive cycle and the percentage of spermiating European sea bass (Dicentrarchus labrax L.) males fed diets containing different percentages of lipids.
José María Navas   +4 more
doaj   +1 more source

Purification of luteinizing hormone (LH) in the sea bass (Dicentrarchus labrax) and development of a specific immunoassay

open access: yesCiencias Marinas, 2006
 The luteinizing hormone (LH) is a key regulator of the processes of gonad maturation, ovulation/spermiation and spawning in vertebrates. The present study describes the purification of LH from pituitaries of a teleost fish, the European sea bass ...
J Mateos   +4 more
doaj   +1 more source

On minimal norms on $M_n$ [PDF]

open access: yes, 2007
In this note, we show that for each minimal norm $N(\cdot)$ on the algebra $M_n$ of all $n \times n$ complex matrices, there exist norms $\|\cdot\|_1$ and $\|\cdot\|_2$ on ${\mathbb C}^n$ such that $$N(A)=\max\{\|Ax\|_2: \|x\|_1=1, x\in {\mathbb C}^n\}$$
Mirzavaziri, Madjid   +1 more
core   +4 more sources

Chebyshev type inequalities for Hilbert space operators [PDF]

open access: yes, 2014
We establish several operator extensions of the Chebyshev inequality. The main version deals with the Hadamard product of Hilbert space operators.
Mohammad Sal   +2 more
core   +1 more source

Students' approaches to learning (SALs): Validation and psychometric properties of a tool measurement

open access: yesJournal of Education and Health Promotion, 2023
BACKGROUND: Deep learning is an important outcome of the higher education and is mostly determined by students' approaches to learning (SALs). The latest version of the Study Process Questionnaire (SPQ) is one of the most used instruments assessing SALs.
Omar Jiyed   +5 more
doaj   +1 more source

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