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Abilities of protocatechuic acid and its alkyl esters, ethyl and heptyl protocatechuates, to counteract UVB-induced oxidative injuries and photoaging in fibroblasts L929 cell line
(2020-01-01)
Ultraviolet B (UVB) radiation triggers the activation of many reactive oxygen species (ROS)-sensitive signaling pathways, resulting in the induction of skin damage that can progress to premature skin aging with long-term ...
Geraniol Encapsulated in Chitosan/Gum Arabic Nanoparticles: A Promising System for Pest Management in Sustainable Agriculture
(2018-05-30)
The nanoencapsulation of botanical compounds (such as geraniol) is an important strategy that can be used to increase the stability and efficiency of these substances in integrated pest management. In this study, chitosan/gum ...
Isolation, synthesis and bioactivity studies of phomactin terpenoids
(Nature Publishing Group, 2018-09-01)
Studies of secondary metabolites (natural products) that cover their isolation, chemical synthesis and bioactivity investigation present myriad opportunities for discovery. For example, the isolation of novel secondary ...
The Application of Pyroelectric Sensors in the Measurementof X-Ray Intensity and Ultrasonic Transducer Output Power: a Review
(2022-06-01)
The biological effects of the signals produced by X-ray and ultrasound equipment strongly depend on their intensity. Some articles were published addressing the use of pyroelectric sensors to measure the intensity of X-rays ...
Influence of cosmic rays on environmental ecosystems
(2023-01-01)
It is presented a model to consider the effect of high energy cosmic rays on three types of terrestrial ecosystem: coastal macroalgae, lakes, and forests. The model includes insights into muon dosimetry based in the stopping ...
Avaliação da toxicidade do fotoprotetor 2-etilhexil 4-metoxicinamato em Oreochromis niloticus e Astyanax altiparanae
(Universidade Tecnológica Federal do ParanáCuritibaBrasilPrograma de Pós-Graduação em Ciência e Tecnologia AmbientalUTFPR, 2022-06-21)
2-Ethylhexyl 4-methoxycinnamate (EHMC) is an organic ultraviolet filter widely used in the formulations of personal care products and industrial products for photoprotection. Due to its heavy use, a significant level of ...
Effect of high altitude on protein metabolism in Bolivian children
(High Altitude Medicine & Biology, 2002-08-01)
In Bo- livia, malnutrition in children is a major health problem that may be caused by inadequate pro- tein, energy, and micronutrient intake; exposure to bacterial and parasitic infections; and ...
Temperature benefits the photosynthetic performance of the diatoms Chaetoceros gracilis and Thalassiosira weissflogii when exposed to UVR
(Elsevier Science Sa, 2010-12)
The aim of this study was to assess the combined effects of temperature and UVR on the photosynthesis performance of two diatoms - Chaetoceros gracilis and Thalassiosira weissflogii. In particular, we evaluated the role ...