Results 21 to 30 of about 107,774 (274)

Measurements and estimation of the columnar optical depth of tropospheric aerosols in the UV spectral region [PDF]

open access: yesAnnales Geophysicae, 2002
We report values of the columnar tropospheric aerosol optical depth at UV wavelengths based on experimental measurements of the direct spectral irradiances carried out by a commercial spectroradiometer (Li1800 of Licor company) covering the range ...
V. E. Cachorro   +7 more
doaj   +1 more source

Transmittance of tapered photonic crystal fibers with absorbing coatings [PDF]

open access: yesEPJ Web of Conferences, 2020
The interaction of the adiabatically tapered photonic crystal fiber fundamental mode with a thin-film absorbing coating, deposited on a surface of a taper waist, on transmission of a tapered fiber is studied.
Salazar Sicacha Mauricio   +4 more
doaj   +1 more source

On the Prediction of Chaotic Time Series using Neural Networks

open access: yesChaos Theory and Applications, 2022
Prediction techniques have the challenge of guaranteeing large horizons for chaotic time series. For instance, this paper shows that the majority of techniques can predict one step ahead with relatively low root-mean-square error (RMSE) and Symmetric ...
Ericka Janet Rechy-ramirez   +3 more
doaj   +1 more source

Surface Profile Studies of Photoinduced Gratings Made with DCG Films with Optional Papain Development

open access: yesGels, 2022
The use of surface relief structures is increasing in the field of optics. A study of photoinduced relief using dichromated gelatin films with different thickness is described in this paper.
Sergio Calixto   +2 more
doaj   +1 more source

Compact and high-performance vortex mode sorter for multi-dimensional multiplexed fiber communication systems [PDF]

open access: yes, 2020
With the amplitude, time, wavelength/frequency, phase, and polarization/spin parameter dimensions of the light wave/photon almost fully utilized in both classical and quantum photonic information systems, orbital angular momentum (OAM) carried by optical
Chen, Yujie   +8 more
core   +2 more sources

Visual Performance of Two Designs of Myopia Management Soft Contact Lenses Compared with a Monofocal One in Young Adults

open access: yesJournal of Ophthalmic & Vision Research, 2023
Purpose: To compare the visual performance of two distinct types of soft contact lenses (CL) aimed at slowing down myopia progression with the performance of a monofocal soft CL. Methods: In a prospective double-masked, crossover trial, 18 myopic adults (
Isabel Signes-Soler   +4 more
doaj   +1 more source

A Study on Generative Models for Visual Recognition of Unknown Scenes Using a Textual Description

open access: yesSensors, 2023
In this study, we investigate the application of generative models to assist artificial agents, such as delivery drones or service robots, in visualising unfamiliar destinations solely based on textual descriptions.
Jose Martinez-Carranza   +4 more
doaj   +1 more source

Study of desert dust events over the southwestern Iberian Peninsula in year 2000: two case studies [PDF]

open access: yesAnnales Geophysicae, 2006
Strong desert dust events occurring in 2000 over the southwestern Atlantic coast of the Iberian Peninsula are detected and evaluated by means of the TOMS Aerosol Index (A.I.) at three different sites, Funchal (Madeira Island, Portugal), Lisboa ...
V. E. Cachorro   +7 more
doaj   +1 more source

Neuromyelitis optica spectrum disorder in three generations of a Chinese family [PDF]

open access: yes, 2019
© 2019 Neuromyelitis optica spectrum disorder is an inflammatory demyelinating disease that is largely sporadic. Familial disease has been reported in one or two generations, although its basis remains unknown.
Dalton, Caroline   +7 more
core   +1 more source

Investigaciones químicas y ópticas de obsidianas geológicas y arqueológicas de México

open access: yesGeofísica Internacional, 1988
Se reporta un método físico que permite caracterizar muestras arqueológicas de obsidiana y atribuirlas a sus fuentes geológicas con el objeto de reconstruir las relaciones comerciales de la época prehispánica en México.
E. Mosheim, E. Althaus
doaj   +1 more source

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