Results 31 to 40 of about 3,323 (268)

Propeller Position Effects over the Pressure and Friction Coefficients over the Wing of an UAV with Distributed Electric Propulsion: A Proper Orthogonal Decomposition Analysis

Drones, 2022
New propulsive architectures, with high interactions with the aerodynamic performance of the platform, are an attractive option for reducing the power consumption, increasing the resilience, reducing the noise and improving the handling of fixed-wing ...
José Ramón Serrano, Luis Miguel García-Cuevas, Pau Bares, Pau Varela   +3 more
doaj   +1 more source

Aplicación de herramientas informáticas al diagnóstico de la combustión en motores

Revista Facultad de Ingeniería Universidad de Antioquia, 2001
En este artículo se presentan aspectos básicos referentes al análisis del fenó­meno de la combustión en motores de combustión interna alternativos (MCIA), por medio de herramientas informáticas; con este fin se ha desarrollado el programa DIATERM, que ...
John Agudelo, Álvaro Delgado, Elkin Gutierrez   +2 more
doaj   +1 more source

Development of a Variable Valve Actuation Control to Improve Diesel Oxidation Catalyst Efficiency and Emissions in a Light Duty Diesel Engine

Energies, 2020
Growing interest has arisen to adopt Variable Valve Timing (VVT) technology for automotive engines due to the need to fulfill the pollutant emission regulations.
José R. Serrano, Francisco J. Arnau, Jaime Martín, Ángel Auñón   +3 more
doaj   +1 more source

Impact of hydrogen substitution for stable lean operation on spark ignition engines fueled by compressed natural gas

Results in Engineering, 2023
Compressed Natural Gas (CNG) appears as a midterm solution to conventional fuels, such as gasoline and diesel. The low carbon content and the possibility of being obtained from renewable sources (animal or agriculture waste, landfills, waste of the ...
S. Molina, S. Ruiz, J. Gomez-Soriano, M. Olcina-Girona   +3 more
doaj   +1 more source

Influence of Pre-Turbine Small-Sized Oxidation Catalyst on Engine Performance and Emissions under Driving Conditions

Applied Sciences, 2020
The earlier activation of the catalytic converters in internal combustion engines is becoming highly challenging due to the reduction in exhaust gas temperature caused by the application of CO2 reduction technologies.
José Ramón Serrano, Pedro Piqueras, Joaquín De la Morena, María José Ruiz   +3 more
doaj   +1 more source

Novel Energy Management Control Strategy for Improving Efficiency in Hybrid Powertrains

Energies, 2022
Energy management in electrified vehicles is critical and directly impacts the global operating efficiency, durability, driveability, and safety of the vehicle powertrain.
Alberto Broatch, Pablo Olmeda, Benjamín Plá, Amin Dreif   +3 more
doaj   +1 more source

Early Impact of Childhood Opportunity on Neurocognitive Outcomes in Sickle Cell Disease

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Neurocognitive impairment is a well‐recognized complication of sickle cell disease (SCD) that begins early in childhood and persists across development. While cerebrovascular injury contributes substantially to risk, neurocognitive deficits are also observed in children without overt or silent cerebral infarctions, suggesting ...
Julia E. LaMotte, Hannah Koch, Olivia A. Coughlin, Jillian R. Bouck, Allie Carter, Seethal A. Jacob   +5 more
wiley   +1 more source

Application of the singular value and pivoted QR decompositions to reduce experimental efforts in compressor characterization

Heliyon, 2022
Compressor characterization, either by running experiments in a turbocharger test rig or by detailed CFD modelling, can be expensive and time-consuming. In this work, a novel method is proposed which can be used to build a complete compressor map from a ...
Andrés Tiseira, Benjamín Pla, Pau Bares, Alexandra Aramburu   +3 more
doaj   +1 more source

Infant Embryonal CNS Tumors: Molecular Insights and Treatment Considerations for Contemporary Pediatric Neuro‐Oncology

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Embryonal tumors comprise the majority of malignant central nervous system (CNS) neoplasms diagnosed in children under 3 years of age. Compared with their counterparts in older children, these tumors exhibit distinct molecular biology and a more aggressive clinical phenotype, while their management is complicated by the heightened ...
Sudarshawn Damodharan, Mariah Wright‐Nadkarni, Mohamed S. Abdelbaki, Girish Dhall   +3 more
wiley   +1 more source

Serum Myonectin Levels Are Positively Associated With Physical Function and Lower Frailty‐Related Limitation in Maintenance Hemodialysis Patients: A Cross‐Sectional Study

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Maintenance hemodialysis (MHD) patients frequently suffer from frailty, characterized by reduced physical function and poor prognosis. Myokines, such as myonectin, secreted by muscle, are emerging regulators of systemic health. This study investigated the relationship between serum myonectin, adipokines (adiponectin, omentin), and ...
Kenichi Kono, Yoshifumi Moriyama, Koji Ohashi, Naoya Otaka, Minako Tatsumi, Toyoaki Murohara, Noriyuki Ouchi, Satoru Oshima   +7 more
wiley   +1 more source