Results 71 to 80 of about 296,582 (309)

Power Factor Adaptive DPWM Control Strategy for T-Type Three-Level Inverters

Energies
With the widespread application of multilevel inverters, device losses have become a critical area of research. A key limitation of conventional three-level discontinuous pulse width modulation (DPWM) strategies is their inability to maintain switching ...
Jialiang Tian, Yingying Xu, Mingxia Xu, Zhenjiang Liu, Yuchi Zhou   +4 more
doaj   +1 more source

A New Single-Phase AC Voltage Converter With Voltage Buck Characteristics for Grid Voltage Compensation

IEEE Access, 2020
Voltage sags and swells are the major problems of the power distribution system that arise due to uneven distribution of the single-phase and nonlinear loads.
Naveed Ashraf, Tahir Izhar, Ghulam Abbas, Ahmed Bilal Awan, Umar Farooq, Valentina E. Balas   +5 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

A Comparison of the Hard-Switching Performance of 650 V Power Transistors With Calorimetric Verification

IEEE Open Journal of Power Electronics, 2023
We compare the switching losses of four equivalent silicon and wide-bandgap 650 V power transistors operated in a hard-switched half-bridge configuration, switching 400 V at 40 A.
Daniel J. Rogers, Jack Bruford, Aleksandar Ristic-Smith, Kawsar Ali, Patrick Palmer, Edward Shelton   +5 more
doaj   +1 more source

Secularism, fundamentalism or Catholicism: the religious composition of the United States to 2043 [PDF]

, 2010
We provide a cohort-component projection of the religious composition of the United States, considering differences in fertility, migration, intergenerational religious transmission, and switching among 11 ethnoreligious groups.
Abramowitz, Ament, Barrett, Box-Steffensmeier, Chandra, CIA (Central Intelligence Agency), CIA (Central Intelligence Agency), Davis, Day, Fiorina, Glaeser, Goujon, Groot, Guth, Haug, Hoffmann, Hout, Hummer, Hunter, Huntington, Inglehart, Jasso, Jones, Kaufmann, Kaufmann, Kiviat, Korey, Kung, Lehrer, Lehrer, McQuillan, Mearsheimer, Mosher, Pew Forum on Religion & Public Life and the Pew Research Center for the People & the Press, Pew Forum on Religion & Public Life and the Pew Research Center for the People & the Press, Rogers, Roof, Sander, Sherkat, Skirbekk, Smith, Smith, Steensland, Thornton, U.S. Bureau of the Census, U.S. Bureau of the Census, U.S. Department of Homeland Security, UN, UN, Voas   +49 more
core   +1 more source

Linking neurogenesis, oligodendrogenesis, and myelination defects to neurodevelopmental disruption in primary mitochondrial disorders

FEBS Letters, EarlyView.
Mitochondrial remodeling shapes neural and glial lineage progression by matching metabolic supply with demand. Elevated OXPHOS supports differentiation and myelin formation, while myelin compaction lowers mitochondrial dependence, revealing mitochondria as key drivers of developmental energy adaptation.
Sahitya Ranjan Biswas, Porter L. Tomsick, Alicia M. Pickrell, Paul D. Morton   +3 more
wiley   +1 more source

Reducing switching losses through MOSFET-IGBT combination [PDF]

, 2008
This paper introduces a configuration aimed at switching losses reduction trough a power leg constructed by combining a MOSFET and an IGBT. The combined use of these different switches leads to the turn-on losses reduction trough the use of the faster ...
Marinov, Angel, Valchev, Vencislav, Van den Bossche, Alex   +2 more
core  

Performance Evaluation of Split Output Converters with SiC MOSFETs and SiC Schottky Diodes [PDF]

, 2017
The adoption of silicon carbide (SiC) MOSFETS and SiC Schottky diodes in power converters promises a further improvement of the attainable power density and system efficiency, while it is restricted by several issues caused by the ultra-fast switching ...
Charalambous, Apollo, Geng, Yiwen, Wu, Xioajie, Yan, Qingzeng, Yuan, Xibo   +4 more
core   +2 more sources

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

Molecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff, Manuela Moritz, Dennis Eggert, Anna Worthmann, Joerg Heeren, Henrike Zech, Till S. Clauditz, Waldemar Wilczak, Hartmut Schlüter, Christian S. Betz, Arne Böttcher, Jan Hahn   +11 more
wiley   +1 more source

Power Semiconductor Losses Simulation Capabilities in Matlab/Simulink

Acta Electrotechnica et Informatica, 2023
The paper describes methods of simulation conduction and switching losses of power semiconductors in MATLAB/Simulink. The comparison of simulation results for Infineon’s semiconductor with PLECS Standalone simulation is presented.
Gordan Daniel, Pástor Marek
doaj   +1 more source