Results 61 to 70 of about 28,237 (188)

W-Band Hybrid Unequal Feeding Network of Waveguide and Substrate Integrated Waveguide for High Efficiency and Low Sidelobe Level Slot Array Antenna Application

International Journal of Antennas and Propagation, 2017
A W-band hybrid unequal feeding network of waveguide and substrate integrated waveguide (SIW) is presented in this paper. It comprises a two-way hybrid waveguide-SIW E-plane divider and an unequal SIW dividing network. Firstly, the two-way hybrid divider
Jun Wang, Yu Jian Cheng
doaj   +1 more source

Programmable Hydrogels: Frontiers in Dynamic Closed‐Loop Systems, Biomimetic Synergy, and Clinical Translation

Advanced Science, Volume 12, Issue 47, December 18, 2025.
This review summarizes the design principles and key features of programmable hydrogels that respond to multiple stimuli. It then delves into the cutting‐edge mechanisms of self‐executing systems, highlighting their role as the cornerstone of next‐generation programmable hydrogels (NGPHs).
Guangli Xiang, Bohan Yin, Behzad Shiroud Heidari, George Youssef, Monika Gosecka, Mateusz Gosecki, Fernando G. Torres, Siu Hong Dexter Wong, Jagan Mohan Dodda   +8 more
wiley   +1 more source

A Fast Frequency Sweep – Green’s Function Based Analysis of Substrate Integrated Waveguide [PDF]

, 2012
In this paper, a fast frequency sweep technique is applied to the analysis of Substrate Integrated Waveguides performed with a Green’s function technique.
Abaei, E., Amendola, G., Arnieri, E., Costanzo, S., Mehrshahi, E.   +4 more
core   +1 more source

Polymer Dispersity Determination by Diffusion‐Ordered Spectroscopy (DOSY)

Macromolecular Rapid Communications, Volume 46, Issue 23, December 5, 2025.
The use of DOSY‐NMR to determine the dispersity of polymer molar mass distributions is explored and correlations between NMR and size exclusion chromatography are determined. ABSTRACT The dispersity (Ð) of a polymer is one of its most important characteristics.
Igor W. F. Silva, Alasdair McKay, Tanja Junkers   +2 more
wiley   +1 more source

Cost-effectiveness of brief structured interventions to discontinue long-term benzodiazepine use: an economic analysis alongside a randomised controlled trial [version 1; peer review: 2 approved]

HRB Open Research, 2020
Background: In Spain, long-term use of benzodiazepine is prevalent in 7% of the population; however, this longer-term use lacks clinical benefits, costs €90million per year and side-effects further add extra cost through adverse health outcomes.
Dominic Trépel, Shehzad Ali, Simon Gilbody, Alfonso Leiva, Dean Mcmillan, Ferran Bejarano, Ermengol Sempere, Caterina Vicens   +7 more
doaj   +1 more source

A Symphony of Fire, Ice, and Fog: How Leaders' Interpersonal Styles Shape Psychological Needs and Motivation

Scandinavian Journal of Psychology, Volume 66, Issue 6, Page 826-841, December 2025.
ABSTRACT Understanding the socio‐contextual factors associated with self‐determined motivation is crucial for addressing work‐related well‐being challenges. Leadership behaviors that support, thwart, or neglect employees' psychological needs play a pivotal role in shaping these motivational dynamics.
Leoni van der Vaart, Siw Tone Innstrand, Marit Christensen   +2 more
wiley   +1 more source

Electronically tunable graphene-based half-mode SIW phase shifter [PDF]

AIP Advances
This paper presents a proof of concept for the first graphene-based half-mode substrate integrated waveguide (GHMSIW) phase shifter. The GHMSIW phase shifter comprises a half-mode substrate integrated waveguide (SIW) transmission line and a single stub ...
Shakir Ullah, Muhammad Yasir
doaj   +1 more source

Efficient Frequency Sweep in RF Devices Simulation: A Combined Approach of Asymptotic Waveform Evaluation and Multigrid Solver

Engineering Reports, Volume 7, Issue 11, November 2025.
A combined AWE‐Multigrid approach accelerates RF frequency sweeping by reducing computation time and resources through asymptotic expansions and multilevel grid resolution, validated by numerical experiments demonstrating superior performance over traditional methods.
Lingzhi Ren, Tao Li, Haili Zhang
wiley   +1 more source

Synergistic Catalysis of Ruthenium Nanoparticles and Polyoxometalate Integrated Within Single UiO−66 Microcrystals for Boosting the Efficiency of Methyl Levulinate to γ-Valerolactone

Frontiers in Chemistry, 2019
The synthesis of heterogeneous cooperative catalysts in which two or more catalytically active components are spatially separated within a single material has generated considerable research efforts.
Xiaoxiong Cai, Qionghao Xu, Gaomei Tu, Yanghe Fu, Fumin Zhang, Weidong Zhu   +5 more
doaj   +1 more source

High‐Performance Multiport Antenna With Frequency Selective Surface for 5G Ka‐Band Applications

Radio Science, Volume 60, Issue 11, November 2025.
Abstract This paper presents a novel multiport antenna tailored for 5G millimeter‐wave (mm‐Wave) applications. The proposed design features orthogonally arranged radiating elements to ensure compactness with an overall footprint of just 20 × 26 mm2.
Mohammad Alibakhshikenari, Iftikhar ud Din, Nouf Abd Elmunim, Bal S. Virdee, Sunil Kumar, Sadiq Ullah, Muhammad Akmal Chaudhary, Nisar Ahmad Abbasi, Chan Hwang See, Ernesto Limiti, Takfarinas Saber   +10 more
wiley   +1 more source