Results 171 to 180 of about 1,067,367 (308)

Analysis and Solution of Electromagnetic Emission of High-speed EMU

open access: yes, 2020
In order to solve the problem of electromagnetic emission problem of high-speed EMU in the fixed frequency band during the type test, the electrical principle system of vehicle traction drive system was decomposed. The radio frequency emission mechanism occurring in the frequency band of 150 kHz~1.15 MHz and 200 MHz~1 GHz was analyzed from the ...
Nan JIA, Qiumin ZHANG
openaire   +1 more source

Solvothermal Fabrication of Trimetallic Oxides NCs: Exploring Their Magnetic and Photocatalytic Characteristics

open access: yesNano Select, Volume 7, Issue 4, April 2026.
A trimetallic NiFe2O4/ZnO/Co3O4 nanocomposite is synthesized via a solvothermal route and thermally tuned by post‐annealing. Structural, optical, and magnetic properties evolve systematically with temperature, enabling efficient sunlight‐driven degradation of mixed organic dyes.
Muhammad Hassan Iqbal   +5 more
wiley   +1 more source

EMUs Pantograph Aerodynamics Experimental Research in Dropping Status under Strong Wind Condition

open access: yes机车电传动, 2016
When EMUs run at a high speed, the pantograph would be affected by airflow and blown up in dropping status, which would result in catenary short-circuit fault. In order to evaluate the pantograph aerodynamics characteristics in dropping status and ensure
JIAO Wengen
doaj  

ZnFe2O4@SiO2@AC Magnetic Nanocomposite as an Efficient Catalyst for Ultrasound‐Assisted Azidation of Aryl Halides to Aryl Amines

open access: yesChemistryOpen, Volume 15, Issue 4, April 2026.
nanocomposite catalyst was synthesized, demonstrating a reliable approach that underscores its innovative potential in the azidation of aryl halides, followed by their conversion to aryl amines. In this study, a novel ZnFe2O4@SiO2@AC nanocomposite catalyst was synthesized, demonstrating a reliable approach that underscores its innovative potential in ...
Manish Kumar   +7 more
wiley   +1 more source

Analysis and verification of key technologies for the electrical system of power-concentrated EMUs

open access: yes机车电传动
This paper introduced the research progress and typical applications of power-concentrated EMUs abroad and provided a preliminary comparative analysis of system configurations among various EMU models.
LI Peng, ZOU Zhichao
doaj  

Evaluation of High-speed Railway Train Line Plan Based on EMU Routes

open access: diamond, 2021
Han Ruihao   +3 more
openalex   +1 more source

Trophic Diversity in Aquatic Food Webs Along a Tropical Coastal River Continuum in West‐Central Africa

open access: yesFreshwater Biology, Volume 71, Issue 4, April 2026.
ABSTRACT In the wet Afrotropics, information on trophic diversity and resource use in freshwaters is extremely limited. Here we used stable isotope ratios (δ13C, δ15N) from food webs along the continuum of a coastal river in the Republic of the Congo to examine seasonal and spatial patterns of trophic diversity.
Gina Walsh   +6 more
wiley   +1 more source

Empirical Literature on Fiscal Multipliers: A Bibliometric Approach, 2002–2023

open access: yesJournal of Economic Surveys, Volume 40, Issue 2, Page 783-820, April 2026.
ABSTRACT This paper reviews the empirical literature on fiscal multipliers through a bibliometric approach, analyzing 337 journal articles published between 2002 and 2023. The articles are categorized based on empirical methodologies, fiscal shock identification strategies, geographic focus, exchange rate arrangements, and macro‐financial regime ...
Margarida Correia Varela   +1 more
wiley   +1 more source

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