Results 61 to 70 of about 10,396 (188)

Topological conformal field theories and gauge theories

open access: yes, 2006
This paper gives a construction, using heat kernels, of differential forms on the moduli space of metrised ribbon graphs, or equivalently on the moduli space of Riemann surfaces with boundary.
Axelrod   +9 more
core   +5 more sources

Design and Implementation of a Single Switch High Gain Boost Topology: Structure, Ripple Control and ZCS [PDF]

open access: gold, 2023
Mohammad Farsijani   +4 more
openalex   +1 more source

Nonisolated High Step‐Up DC‐DC Ćuk Converter Based on Coupled Inductors

open access: yesInternational Journal of Circuit Theory and Applications, Volume 54, Issue 2, Page 874-887, February 2026.
A nonisolated high step‐up DC‐DC Ćuk converter based on coupled inductors and voltage multiplier cell (VMCs) is proposed and thoroughly assessed. ABSTRACT This work presents a nonisolated high step‐up DC‐DC Ćuk converter, specifically designed for nanogrid applications.
Manuel de Oliveira Vasconcelos Júnior   +7 more
wiley   +1 more source

Preformed pediatric zirconia crown versus preformed pediatric metal crown: study protocol for a randomized clinical trial

open access: yesTrials, 2019
Background Guidelines in pediatric restorative dentistry recommend the use of preformed pediatric stainless steel crowns (SSCs) in cases of severe tooth decay of at least two surfaces.
Serena Lopez-Cazaux   +3 more
doaj   +1 more source

Nanocellulose–MOF‐Derived Carbon Hybrid Aerogels with Hierarchical Micro/Nanostructures for Solar‐Driven Water Evaporation

open access: yesAdvanced Science, Volume 13, Issue 1, 5 January 2026.
A biodegradable, cellulose‐based bilayer solar evaporator is fabricated entirely via aqueous, sequential ice‐templating. The hybrid structure combines vertically aligned cellulose nanofibers for rapid water transport with a metal‐orgnic framework (MOF)‐derived porous carbon layer decorated with plasmonic nanoparticles for enhanced photothermal ...
Suji Lee   +6 more
wiley   +1 more source

Equation of state of a seven-dimensional hard-sphere fluid. Percus-Yevick theory and molecular dynamics simulations

open access: yes, 2015
Following the work of Leutheusser [Physica A 127, 667 (1984)], the solution to the Percus-Yevick equation for a seven-dimensional hard-sphere fluid is explicitly found.
de Haro, M. Lopez   +2 more
core   +1 more source

Generalized CP Invariance and the Yukawa sector of Two-Higgs Models [PDF]

open access: yes, 2010
We analyze generalized CP symmetries of two-Higgs doublet models, extending them from the scalar to the fermion sector of the theory. We show that, with a single exception, those symmetries imply massless fermions.
Ferreira, P. M., Silva, Joao P.
core   +3 more sources

Ultra High Step‐Up Soft Switching Converter Based on the Interleaved Structure

open access: yesEnergy Science &Engineering, Volume 14, Issue 1, Page 540-556, January 2026.
The proposed topology provides high voltage gain and enhanced efficiency at low duty cycles, thereby reducing conduction losses in the switches. Its interleaved structure ensures current sharing, while the switches experience both low voltage and low current stress, further decreasing conduction losses.
Mahdi Alizadeh   +3 more
wiley   +1 more source

Highly thermostable and visibly transparent Cu-thin-film planar heaters

open access: yesApplied Surface Science Advances
Transparent heaters (THs) are widely used in applications such as deicing, defogging, and thermal management, requiring high transparency, low sheet resistance and structural durability. This study investigates the design, fabrication, and performance of
Chankyoung Lee, Jaewoo Park, Dooho Choi
doaj   +1 more source

Calculation of delay characteristics for multiserver queues with constant service times [PDF]

open access: yes, 2009
A
Bruneel, Herwig   +4 more
core   +2 more sources

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