Results 21 to 30 of about 867,475 (306)

Multifunctional strut-plate composite lattice metamaterial for integrated acoustic, energy, and vibration management

open access: yesVirtual and Physical Prototyping
In the pursuit of engineering solutions capable of managing persistent hazards such as noise, vibration, and structural impacts, materials that combine sound absorption, vibration damping, and deformation resistance are crucial.
Xi Wang   +4 more
doaj   +1 more source

Wind Tunnel Testing on Crosswind Aerodynamic Forces Acting on Railway Vehicles

open access: yesJournal of Fluid Science and Technology, 2010
This study is devoted to measure the aerodynamic forces acting on two railway trains, one of which is a high-speed train at 300km/h maximum operation speed, and the other is a conventional train at the operating speed 100km/h. The three-dimensional train
Hyeok-bin KWON   +2 more
doaj   +1 more source

Positioning of High-speed Trains using 5G New Radio Synchronization Signals [PDF]

open access: yes, 2018
We study positioning of high-speed trains in 5G new radio (NR) networks by utilizing specific NR synchronization signals. The studies are based on simulations with 3GPP-specified radio channel models including path loss, shadowing and fast fading effects.
Koivisto, Mike   +5 more
core   +2 more sources

Optimization of optical data transmitters for 40-Gb/s lightwave systems using frequency resolved optical gating [PDF]

open access: yes, 2002
The measurement technique of frequency resolved optical gating has been used to optimize the phase of a 40-GHz train of optical pulses generated using a continuous-wave laser gated with an external modulator. This technique will be vital for optimization
Barry, Liam P.   +5 more
core   +1 more source

High-speed trains: in microchannels? [PDF]

open access: yesJournal of Fluid Mechanics, 2016
Kahkeshani et al. (J. Fluid Mech., vol. 786, 2016, R3) have studied particle ordering in suspension flow in a rectangular microchannel. Experiments and numerical simulations reveal that inertial focusing and hydrodynamic interactions result in long-lived ‘trains’ of regularly spaced particles.
openaire   +1 more source

Aeroacoustics in high speed trains

open access: yes, 2022
Este trabajo se centra en el estudio de problemas aeroacústicos en los trenes de alta velocidad. Se han considerado dos escenarios en los que las ondas de presión generadas son críticos para el confort de los pasajeros. Uno es el debido a las ondas de presión que genera el tren cuando entra y sale de un túnel, que a su vez producen saltos de presión de
openaire   +2 more sources

Hydrolysis behavior and mechanism of AlON powders

open access: yesMaterials & Design
AlON-C (∼25 μm) powders were prepared using the carbothermal reduction and nitridation (CRN) method. The powders were subsequently processed through milling to obtain AlON-M (∼1.6 μm) and AlON-F (∼456 nm).
Jianxin Xu   +4 more
doaj   +1 more source

AGAINTS AND FOR THE HIGH SPEED TRAINS’ MULTIMPLICATION [PDF]

open access: yesAnnals of the University of Oradea: Economic Science, 2008
In this exposure we intend to make visible the situation in which global warming is given by road and air transport, how could be revitalized railways, and how high speed trains could become a preferred mode of transport. But there is manifesting an opposition to railway development, nurtured by different interests, ranking from governments themselves,
Benea Ciprian, Baciu Adrian
openaire   +1 more source

Real‐World Pediatric Blinatumomab Administration: Access to Outpatient Care Delivery and Impact of a Hospital‐Dispensed Model

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Blinatumomab has been shown to be highly effective for patients with pediatric B‐ALL and has recently become standard of care therapy. Due to its past use in the clinical trial setting, there is limited information available about real‐world administration.
Katelyn Oranges   +12 more
wiley   +1 more source

Tribo-Dynamic Behavior of Double-Row Cylindrical Roller Bearings Under Raceway Defects and Cage Fracture

open access: yesLubricants
High-quality data samples are essential for the early detection of bearing failures and the analysis of bearing behavior. The accurate simulation of bearing fault conditions can provide valuable insights into understanding failure mechanisms.
Longqing Fan   +5 more
doaj   +1 more source

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