Results 81 to 90 of about 403,585 (161)

Mixture‐Quantitative Structure–Property Relationship Approaches for Jet Fuel‐Component Blends: A Review

open access: yesMolecular Informatics, Volume 45, Issue 9, September 2026.
A literature review of QSPR approaches to predict jet fuel properties. It exposes the fundamental principles of QSPR and illustrates pure‐compound QSPR through examples of applications for jet fuel components. Mixture‐QSPR (M‐QSPR) modeling specificities are addressed: mixtures representation, design of descriptors for mixtures, and impact on internal ...
Erik Yeghyan   +3 more
wiley   +1 more source

Letter to Alfred H. Buck from Frank Buck, 1871 December 1

open access: yes, 1871
A handwritten letter to Alfred H. Buck from Frank Buck regarding a visit from John and his wife and needing Albert to sign a mortgage on the homestead, dated December 1, 1871.Archival master image scanned in reflective mode as 48-bit RGB color TIFF using
Buck, Frank
core   +1 more source

Clayton Douglass Buck, portrait

open access: yes, 1929
This item is a photograph of Clayton Douglass Buck, most likely during his tenure as Governor.
Buck Family
core   +2 more sources

An Overview of Hybrid DC–DC Converters: From Seeds to Leaves

open access: yesIEEE Open Journal of the Solid-State Circuits Society
With the surging demands for higher current at sub-1-V supply level in high-performance digital systems, high-efficiency and high-current-density power converters are essential for system integration.
Yan Lu   +7 more
doaj   +1 more source

Major Space Weather Risks Identified via Coupled Physics‐Engineering‐Economic Modeling

open access: yesAGU Advances, Volume 7, Issue 6, September 2026.
Abstract Space weather poses an important but under‐quantified threat to society. While severe geomagnetic storms are recognized as potential global catastrophes, their socio‐economic impacts remain poorly quantified. We present a novel physics‐engineering‐economic framework that links geophysical drivers to power grid geoelectric fields, transformer ...
Edward J. Oughton   +7 more
wiley   +1 more source

Comparative Analysis of Fourth-Order Non-Isolated DC-DC Converters: Ćuk, SEPIC and Zeta [PDF]

open access: yesJournal of Electrical and Electronics Engineering
This paper presents a comparative study of three fourth-order non-isolated DC-DC converters: Ćuk, SEPIC, and Zeta. Analytical expressions for output voltage ripple were derived for each topology, and their accuracy was validated through numerical ...
ȘCHIOP Adrian   +2 more
doaj  

Realization of a Photovoltaic Fed Sparse Alternating Current (AC)-Link Inverter

open access: yesThe Journal of Engineering Research, 2016
In this paper, a soft-switched alternating current (AC)-link buck-boost inverter with a reduced number of switches, referred to as a sparse AC-link buck-boost inverter, was designed and implemented for a photovoltaic (PV) interface. Important features of
R. Ramaprabha   +3 more
doaj   +1 more source

A Novel Step‐Up Converter With Lower Ripple and RHP Zero Elimination

open access: yesIET Power Electronics
The paper presents a novel step‐up converter featuring ultralow output ripple and elimination of right‐half‐plane (RHP) zeros, making it suitable for high‐precision and high‐reliability boost applications.
Siwen Ye   +3 more
doaj   +1 more source

Integrated Square On-Chip Inductor for Photovoltaic Converter Applications

open access: yesRevue des Énergies Renouvelables
The research of this paper concerns the study of an integrated square on-chip inductor in a DC-DC Buck converter connected to a photovoltaic module.
mokhtaria derkaoui, Yamina Benhadda
doaj   +1 more source

Deriving The Canonical Equivalent Circuit For Small Signal & Low Frequency Ac Model For The Sepic And Zeta PWM Dc-dc Converters With Two-port Network

open access: yesEletrônica de Potência, 2011
PWM dc-dc converters operating in Continuous Conduction Mode (CCM) perform similar basic functions despite the topology of which one. The canonical equivalent circuit of small signal & low frequency ac model permits to analyze converter behavior in a ...
Enio V. Kassick
doaj   +1 more source

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