Results 131 to 140 of about 21,033 (238)

Dual-Transformer Series Resonant Converter with Full Range ZVS Operation

Shanghai Jiaotong Daxue xuebao
A dual-transformer series resonant converter (DTSRC) is proposed to solve the problem of excessive return power and loss of zero voltage switching (ZVS) operation under light load in the dual bridge resonant converter (DBRC). A dual-transformer structure
LI Yinan, HU Song, LI Xiaodong, CHEN Wu, ZHONG Liping, YANG Qingqing
doaj   +1 more source

Modeling the Drying Process of CO2‐Water in Porous Media With a Novel Volume‐of‐Fluid Lattice Boltzmann Model

Water Resources Research, Volume 62, Issue 3, March 2026.
Abstract Lattice Boltzmann (LB) modeling has been extensively applied to porous media processes, including evaporation. Former pore‐scale LB models for evaporation rely on oversimplified assumptions, such as matched viscosities. However, in subsurface CO2 ${\text{CO}}_{2}$–brine systems, the viscosity ratio can exceed 100 under relevant temperature ...
Saleh Mohammadrezaei, Rouhi Farajzadeh, Vahid Niasar   +2 more
wiley   +1 more source

SUBSTITUTING FOR THE STATE: The Sovereignty Impacts of Diverse Citizens’ Off‐grid Infrastructure Strategies in South Africa

International Journal of Urban and Regional Research, Volume 50, Issue 2, Page 430-448, March 2026.
Abstract In South Africa, citizens in both low‐ and high‐income areas are increasingly providing their own services to mitigate the unreliability, unaffordability and inaccessibility of state services. This article examines diverse case studies across socio‐economic and residential typologies to explore shifts in service provision responsibilities from
Fiona Anciano, Charlotte Lemanski, Christina Culwick Fatti, Margot Rubin   +3 more
wiley   +1 more source

Flexible and navigable suction access sheaths: balancing sheath and scope size for desired flows

BJU International, Volume 137, Issue S3, Page S60-S70, March 2026.
Objective To study the effects of ureteroscope diameter, ‘flexible and navigable suction’ access sheaths (FANS) diameter, and irrigation pressure on intrarenal pressure (IRP) and irrigation fluid flow rates in ex vivo porcine kidneys; these benchtop data were compared against mathematical modelling results.
Richard Menzies‐Wilson, Jessica Williams, Thijs Ruiken, Candace Rhodes, Ben Turney   +4 more
wiley   +1 more source

An efficiency improvement method for the TAB converter based on the minimization of fundamental reactive power

Frontiers in Energy Research
With the advantages of simple topology, voltage matching, electrical isolation, and bi-directional energy control, the Triple Active Bridge (TAB) has become an active area of exploration and research for the flexible interconnection of DC ports, such as ...
Qihui Feng, Jia Li, Chenghui Lin, Yuming Zhang, Yuelang Zhang, Xueping Yu   +5 more
doaj   +1 more source

Direct in‐scope suction (DISS) ureteroscopy: techniques, outcomes and future directions

BJU International, Volume 137, Issue S3, Page S19-S28, March 2026.
Objective To provide an overview of direct in‐scope suction (DISS) ureteroscopy, an emerging technology that integrates suction directly into the ureteroscope with the aim of enhancing stone clearance, improving visualisation, and reducing intrarenal pressure during ureteroscopic stone surgery.
Parth U. Patel, Michael Uy, Casey Dauw, Wilson Sui, Jeffrey Plott, William W. Roberts, Khurshid R. Ghani   +6 more
wiley   +1 more source

Benchtop comparison of seven ureteroscopes: evaluating physical properties and deflection with flexible and navigable suction access sheaths

BJU International, Volume 137, Issue S3, Page S86-S92, March 2026.
Objectives To evaluate the physical properties of seven ureteroscopes (URSs) and compare the maximal angle of deflection (MAD) when used with flexible and navigable suction access sheaths (FANSs) of varying sizes. Materials and Methods Seven commercial URSs (ranging from 6.3 to 9.5 F in size) were evaluated for outer diameter, irrigation flow rate ...
Koushikk S Ayyappan, Richard Menzies‐Wilson, Amir Mashia Jaafari, Hasan Al‐Sattar, Ben Turney   +4 more
wiley   +1 more source

Approaching Urban Flood Modelling According to Available Data: A State‐of‐the‐Art Review and Future Challenges

Journal of Flood Risk Management, Volume 19, Issue 1, March 2026.
ABSTRACT Urban flood modelling allows for developing effective strategies for mitigating flood risks and improving urban resilience. Different urban models can be selected according to the desired objective, ranging from simplified frameworks to more sophisticated numerical models.
Dina Pirone, Roberta Padulano, Giuseppe Del Giudice   +2 more
wiley   +1 more source

Impact of Flood Risks on Service Disruptions of Critical Infrastructures by the Example of the Euskirchen County, Germany

Journal of Flood Risk Management, Volume 19, Issue 1, March 2026.
ABSTRACT The increasing severity of flood events poses growing risks to critical infrastructures (CI), with failures often triggering cascading effects across sectors. Despite this, flood risk management (FRM) frequently overlooks service disruptions of CI and systemic interdependencies between infrastructure sectors because of its place‐based approach.
Marisa Fuchs, Jennifer Oriwol, Matthias Zimny, Lara Lenze, Stefan Greiving   +4 more
wiley   +1 more source

Plume Characterization of a One-Millipound Solid Teflon Pulsed Plasma Thruster, Phase 2 [PDF]

Measurements of the pulsed plasma thruster (PPT) plume upstream mass flux were made in the Molecular Sink (MOLSINK) vacuum facility in order to minimize the plume-tank wall reflected mass flux.
Harstad, K. G., Jones, R. M., Pless, L. C., Rudolph, L. K.   +3 more
core   +1 more source