Economía Circular
Economía Circular
A hybrid multi-scale fusion paradigm for AQI prediction based on the secondary decomposition
25/04/2024 -
With rapid industrialization and urbanization, air pollution has become an increasingly severe problem. As a key indicator of air quality, accurate prediction of the air quality index (AQI) is...
A Temporal Methodology for Assessing the Performance of Concatenated Codes in OFDM Systems for 4K-UHD Video Transmission
24/04/2024 -
The communication channel is a critical part of the process of information degradation. In the 4K ultra-resolution video transmission domain, the communication channel is a crucial part where...
Dynamics of a Quantum System Interacting with White Non-Gaussian Baths: Poisson Noise Master Equation
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Quantum systems are unavoidably open to their surrounding degrees of freedom. The theory of open quantum systems is thus crucial to understanding the fluctuations, dissipation, and decoherence of a...
Aerosol?Synthesized Surfactant?Free Single?Walled Carbon Nanotube?Based NO2 Sensors: Unprecedentedly High Sensitivity and Fast Recovery
16/04/2024 -
NO2 chemical sensors using aerosol?synthesized single?walled carbon nanotubes demonstrate unprecedently high sensitivity, ultrafast response/recovery, and low limit of detection. This is owing to the...
High-Precision Position Detection and Communication Fusion Technology Using Beacon Spread-Spectrum Modulation with Four-Quadrant Detector
16/04/2024 -
In space laser communication, the wide divergence angle of beacon light leads to substantial spatial losses, compounded by background light and detector noise; this results in compromised precision...
Control of working memory by phase–amplitude coupling of human hippocampal neurons
17/04/2024 -
Retaining information in working memory is a demanding process that relies on cognitive control to protect memoranda-specific persistent activity from interference1,2. However, how cognitive control...
Near?Infrared?II Nanomaterials for Activatable Photodiagnosis and Phototherapy
13/04/2024 -
Near?Infrared?II (NIR?II) spans wavelengths between 1,000 to 1,700 nanometers, featuring deep tissue penetration and reduced tissue scattering and absorption characteristics, providing robust support...
Aerospace, Vol. 11, Pages 307: An Autonomous Tow Truck Algorithm for Engineless Aircraft Taxiing
14/04/2024 -
The aviation industry has proposed multiple solutions to reduce fuel consumption, air pollution, and noise at airports, one of which involves deploying electric trucks for aircraft towing between the...
Recent advancements in silica filled natural rubber composite: A green approach to achieve smart properties in tyre
08/04/2024 -
Abstract The partial or total replacement of carbon black by silica fillers is initiated through various techniques for environment-friendly, smart, and fuel-efficient NR...
Aerospace, Vol. 11, Pages 291: Data Assimilation of Ideally Expanded Supersonic Jet Using RANS Simulation for High-Resolution PIV Data
09/04/2024 -
Data assimilation using particle image velocimetry (PIV) and Reynolds-averaged Navier–Stokes (RANS) simulation was performed for an ideally expanded supersonic jet flying at a Mach number of...
Aerospace, Vol. 11, Pages 292: Serrations as a Passive Solution for Turbomachinery Noise Reduction
09/04/2024 -
Aircraft engine noise has become a significant concern for air operators to address. Engineering strategies have resulted in the development of easily applicable solutions, known as “passive...
An Innovative Passive Noise Control Technique for Environmental Protection: An Experimental Study in Explosion Noise Attenuation
11/04/2024 -
Passive noise control techniques are an effective way of mitigating environmental noise pollution caused by industrial activities, assisting with long-term sustainability in workplace health and...
Aerospace, Vol. 11, Pages 282: Radio Science Experiments during a Cruise Phase to Uranus
05/04/2024 -
The exploration of Uranus, a key archetype for ice giant planets and a gateway to understanding distant exoplanets, is acquiring increasing interest in recent years, especially after the Uranus...
Aerospace, Vol. 11, Pages 286: Preliminary Design and Optimization of Primary Structures for a Tilt-Duct UAV
08/04/2024 -
Tilt-duct Unmanned Aerial Vehicles (UAV) combine the high-speed efficiency of fixed-wing aircrafts with vertical takeoff and landing (VTOL) and the hover capabilities of rotary-wing aircrafts while...
An Improved Identification Method of Pipeline Leak Using Acoustic Emission Signal
07/04/2024 -
Pipelines constitute a vital component in offshore oil and gas operations, subjected to prolonged exposure to a range of alternating loads. Safeguarding their integrity, particularly through...
Low-Frequency Bandgap Characterization of a Locally Resonant Pentagonal Phononic Crystal Beam Structure
08/04/2024 -
This paper proposes a local resonance-type pentagonal phononic crystal beam structure for practical engineering applications to achieve better vibration and noise reduction. The energy band,...
Syntheses of high molecular mass polyglycolides via ring?opening polymerization with simultaneous polycondensation (ROPPOC) by means of tin and zinc catalysts
04/04/2024 -
Glycolide was polymerized in bulk by means of four different ROPPOC catalysts: tin(II) 2?ethylhexanoate (SnOct2), dibutyltin bis(pentafluoro?phenoxide) (BuSnOPF), zinc biscaproate (ZnCap), and zinc...
Sound characteristics and mechanical properties of metal powder chamber structures composite materials formed by laser powder bed fusion
01/04/2024 -
Granular damping technology is a widely used method in aerospace and other industries to reduce vibration and noise. However, the technique still faces challenges such as secondary processing,...
Simulation test of short-term and long-term clogging of permeable pavement
01/04/2024 -
Permeable pavement is superior in functions such as reducing noise, improving traffic safety, and protecting urban water environment. However, contaminants on the pavement due to spillage of...
Aerospace, Vol. 11, Pages 266: A Preliminary Evaluation of Morphing Horizontal Tail Design for UAVs
29/03/2024 -
Morphing structures are a relatively new aircraft technology currently being investigated for a variety of applications, from civil to military. Despite the lack of literature maturity and its...
