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Your search keyword '"Santos, Álex P. B."' showing total 3 results
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3 results on '"Santos, Álex P. B."'

1. How Does ENSO Impact the Solar Radiation Forecast in South America? The Self-affinity Analysis Approach

Author

Murari, Thiago B., Filho, Aloisio S. Nascimento, Moret, Marcelo A., Pitombo, Sergio, and Santos, Alex A. B.

Subjects
Physics - Atmospheric and Oceanic Physics
Abstract

The major challenge we face today in the energy sector is to meet the growing demand for electricity with less impact on the environment. South America is an important player in the renewable energy resource. Brazil accelerated the growth of photovoltaic installed capacity in 2018. From April of 2017 to April of 2018, the capacity increased $1351.5\%$. It is expected to reach the value of $2.4\ GW$ until the end of the year. The new Chilean regulation request that 20\% of the total electricity production in 2025 must come from renewable energy sources. The aim of this paper is to establish time series behavior changes between El Ni\~no Southern Oscillation and the solar radiation resource in South America. The results can be used to validate forecasts of energy production for new solar plants. The method used to verify the behavior of the time series was the Detrended Fluctuation Analysis. Solar radiation data were collected in twenty-five cities distributed inside the Brazilian solar belt, plus six cities in Chile, covering the continent from east to west, in a region with high potential of solar photovoltaic generation. The results shows the impact of El Ni\~no Southern Oscillation on the climatic behavior of the evaluated data. It is a factor that may lead to the wrong forecast of the long term potential solar power generation for the region.

Published
2020

3. An eye on the Shih Tzu dog: Ophthalmic examination findings and ocular surface diagnostics.

Author

Sebbag, Lionel, Silva, Ana Paula S. M., Santos, Álex P. B., Raposo, Ana Cláudia S., and Oriá, Arianne P.

Subjects
MEIBOMIAN glands, DOGS, INTRAOCULAR pressure, LOCAL anesthesia, NEOVASCULARIZATION, CORNEA, SENSES
Abstract

Objective: To characterize the ocular surface parameters and determine the prevalence of ocular pathology in Shih Tzu dogs. Animal Studied: Fifty Shih Tzu dogs (28 male, 22 female). Procedures: Each dog underwent a complete ophthalmic examination (recording any pathology) and a series of diagnostics, allowing for a 10 min‐interval between tests: intraocular pressure (IOP), blink rate, palpebral fissure length (PFL), corneal tactile sensation (CTS), Schirmer tear test and nasolacrimal reflex without (STT‐1, NL‐STT1) and with topical anesthesia (STT‐2, NL‐STT2), tear ferning, strip meniscometry test (SMT), tear film breakup time (TFBUT), and punctate fluorescein staining (PFS) of the cornea. Results: Mean ± SD test values were as follows: IOP (17.9 ± 3.7 mmHg), blink rate (2.4 ± 1.4 blinks/min), PFL (23.8 ± 1.8 mm), CTS (1.8 ± 0.7 cm), STT‐1 (22.0 ± 5.5 mm/min), NL‐STT1 (24.2 ± 4.7 mm/min), STT‐2 (16.9 ± 6.5 mm/min), NL‐STT2 (18.5 ± 7.5 mm/min), SMT (7.5 ± 3.5 mm/5 s), TFBUT (5.3 ± 2.4 s), tear ferning (1.3 ± 0.7), and PFS (1.6 ± 0.6). PFL was significantly greater in male vs. female Shih Tzus (p<.001). Age was negatively correlated with TFBUT results (r = −0.31, p =.027). Lagophthalmos was observed in 82% eyes. Ocular surface pathology was common, including adnexal abnormalities (100% eyes with caruncular trichiasis and medial lower lid entropion) and corneal opacification (27% pigmentation, 20% fibrosis, 12% neovascularization). Conclusions: Qualitative tear film deficiency (low TFBUT), along with several anatomical abnormalities that promote ocular irritation and reduce globe protection, together help explain the concerningly high prevalence of ocular surface disease in the Shih Tzu breed. Prophylactic measures (e.g., medial canthoplasty, topical lubrication) could be considered to improve ocular health in Shih Tzus. [ABSTRACT FROM AUTHOR]

Published
2023
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