Results 51 to 60 of about 40,902 (281)

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Quasi-z-source inverter for photovoltaic power gene ration systems [PDF]

, 2021
The Z-Source Inverter (ZSI) has been reported suitable for res idential PV system because of the capability of voltage boost and inversion in a single stage.
Pravin P. Kalubarme, Prof. Santhosh Kompelli   +1 more
core   +1 more source

EMI Suppression of High-Frequency Isolated Quasi Z-Source Inverter Based on Multi-Scroll Chaotic PWM Modulation

IEEE Access, 2019
The high frequency isolated quasi Z-source inverter is a new type of inverter, which is suitable for photovoltaic generation system because of its high lift to voltage ratio, transient bridge direct access and electrical isolation.With the increase of ...
Yan Chen, Weihao Jiang, Yong Zheng, Guodongxu He   +3 more
doaj   +1 more source

Hybrid Source Multi-Port Quasi-Z-Source Converter with Fuzzy-Logic-Based Energy Management

Energies, 2023
In this paper, a fuzzy-logic-based energy management system and a multi-port quasi-z-source converter that utilizes hybrid renewable energy sources are proposed.
Gorkem Say, Seyed Hossein Hosseini, Parvaneh Esmaili   +2 more
doaj   +1 more source

Colorectal cancer‐derived FGF19 is a metabolically active serum biomarker that exerts enteroendocrine effects on mouse liver

Molecular Oncology, EarlyView.
Meta‐transcriptome analysis identified FGF19 as a peptide enteroendocrine hormone associated with colorectal cancer prognosis. In vivo xenograft models showed release of FGF19 into the blood at levels that correlated with tumor volumes. Tumoral‐FGF19 altered murine liver metabolism through FGFR4, thereby reducing bile acid synthesis and increasing ...
Jordan M. Beardsley, Michael W. Rohr, Joseph A. Goode, Sai Preethi Nakkina, Jignesh G. Parikh, Deborah A. Altomare   +5 more
wiley   +1 more source

Класcификация изолированных DC/DC квази–импедансных преобразователей [PDF]

, 2013
Представлены существующие схемы повышающих DC/DC квази-импедансных преобразователей. Произведена классификация преобразователей по передаточной характеристике по постоянному току и типу схемы квази-импедансного звена.Existent topologies of the quasi-Z ...
Винников, Д. В., Гусев, А. А., Чуб, А. И.   +2 more
core  

Switched Z-Source/Quasi-Z-Source DC-DC Converters With Reduced Passive Components for Photovoltaic Systems

IEEE Access, 2019
In this paper, switched Z-source/quasi-Z-source dc-dc converters (SZSC/SQZSCs) are proposed for the photovoltaic (PV) grid-connected power system, where the high step-up dc-dc converters are required to boost the low voltage to high voltage.
Junfeng Liu, Jialei Wu, Jianyong Qiu, Jun Zeng   +3 more
doaj   +1 more source

Navigating new norms: a systematic review of factors for the development of effective digital tools in higher education

FEBS Open Bio, EarlyView.
What factors make for an effective digital learning tool in Higher Education? This systematic review identifies elements of a digital tool that published examples reveal to be features of an engaging and impactful digital tool. A systematic literature search yielded 25 research papers for analysis.
Akmal Arzeman, Jessica Haines, Connie Pritchard, Stephen Rutherford, Nigel Francis   +4 more
wiley   +1 more source

Neutral point clamped quasi Z source inverter for photovoltaic systems [PDF]

, 2019
Multilevel inverters are becoming popular for power conversion in renewable energy systems, AC-DC hybrid micro grids etc. The voltage stress and inrush current through these inverter leg switches are quite higher as compared to the load ratings which ...
Aravindan, M., Arumugam, M., Balaji, V., Saravanan, V.   +3 more
core   +3 more sources

Low Computational Burden Predictive Direct Power Control of Quasi Z-Source Inverter for Grid-Tied PV Applications [PDF]

, 2023
This paper proposes a simplified predictive direct power control for the grid-tied quasi Z-source inverter. The proposed control implements a model predictive control structure to achieve the maximum obtainable power from the collected PV source.
Abid, Abderahmane, Bakeer, Abualkasim, Bouzidi , Mansour, Lashab, Abderezak, Rabhi, Boualaga, Zellouma, Laid   +5 more
core   +1 more source