Results 11 to 20 of about 1,041,563 (279)

The effect of thermal aging degradation of CFRP composite on its mechanical properties using destructive and non-destructive methods and the DIC system

open access: yesPolymer Testing, 2023
This paper presents the results of laboratory tests for CFRP (Carbon Fiber Reinforced Polymer) composite subjected to aging in different conditions: temperature (250 °C and 300 °C) and time (60, 65, 75 and 90 min) to assess its thermal degradation and ...
P. Golewski   +3 more
doaj   +1 more source

Improved Prediction of the Higher Heating Value of Biomass Using an Artificial Neural Network Model Based on the Selection of Input Parameters

open access: yesEnergies, 2023
Recently, biomass has become an increasingly widely used energy resource. The problem with the use of biomass is its variable composition. The most important property that determines the energy content and thus the performance of fuels such as biomass is
Justyna Kujawska   +3 more
doaj   +1 more source

Multiple Molecular H2 Outflows in AFGL 618 [PDF]

open access: yes, 2003
We report high spatial (0.5 arcsec) and high spectral (9 km/s) resolution spectro-imaging of the 2.12 micron H2 1-0 S(1) line in the proto-planetary nebula AFGL 618 using BEAR at the CFHT.
Burton M. G.   +11 more
core   +2 more sources

ANALYSIS OF THE INFLUENCE OF GOLD NANOPARTICLE ADDITION TO PHOTOLUMINESCENCE EMISSION INTENSITY AND DECAY TIME OF 618-CDSE QUANTUM DOTS

open access: yesSpektra: Jurnal Fisika dan Aplikasinya, 2018
Abstrak Telah dilakukan pencampuran nanopartikel emas dengan kuantum dot CdSe 618. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penambahan nanopartikel emas terhadap intensitas emisi dan waktu peluruhan fotoluminesensi kuantum dot CdSe ...
Muhammad Lawrence Pattersons   +1 more
doaj   +1 more source

Machine Learning Methods to Forecast the Concentration of PM10 in Lublin, Poland

open access: yesEnergies, 2022
Air pollution has a major impact on human health, especially in cities, and elevated concentrations of PMx are responsible for a large number of premature deaths each year.
Justyna Kujawska   +3 more
doaj   +1 more source

Submillimeter Array Observation of the Proto-Planetary Nebula CRL 618 in the CO J=6-5 Line [PDF]

open access: yes, 2007
We report on the results of a Submillimeter Array interferometric observation of the proto-planetary nebula CRL 618 in the 12CO J=6-5 line. With the new capability of SMA enabling us to use two receivers at a time, we also observed simultaneously in the ...
Bujarrabal V.   +15 more
core   +2 more sources

Synthesis and Spectro-Kinetic Study of the Complexes of Pd+2 Ion with 2-(5-Bromo-2- pyridylazo)5diethylaminophenol Reagent in Ethanol – Water Solutions

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2017
      The complexes of Pd+2 ion with 2-(5-bromo-2-pyridylazo)-5-dieıhyl aminophenol (BPADAP) were studied kinetically and spectrophotometrically in aqueous ethanolic solutions.
Muayed khaleel Ibrahim
doaj   +1 more source

Comparative study of DC/DC electric vehicle charging system with conventional transformer and planar transformer [PDF]

open access: yesArchives of Electrical Engineering, 2023
This paper presents an analysis of electric vehicle charging station operation based on a dual active bridge topology. Two cases are considered: one with the use of a medium frequency planar transformer, the other with a conventional Litz winding ...
Maciej Rudawski   +2 more
doaj   +1 more source

A novel ex vivo perfusion-based mandibular pig model for dental product testing and training

open access: yesBMC Oral Health, 2023
Background A translational ex vivo perfusion-based mandibular pig model was developed as an alternative to animal experiments, for initial assessment of biomaterials in dental and maxillofacial surgery and training.
Machteld van Erk   +4 more
doaj   +1 more source

On the Influence of Solar Radiation on Heat Delivered to Buildings for Heating

open access: yesEnergies, 2021
Nowadays, the attention of designers and service providers is especially focused on energy efficiency and integration of renewable energy sources (RES).
Tomasz Cholewa   +8 more
doaj   +1 more source

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