Institution
Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto
Education•
About: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto is a based out in . It is known for research contribution in the topics: Population & Genus. The organization has 2143 authors who have published 3674 publications receiving 71071 citations. The organization is also known as: FFCLRP & FFCLRP-USP.
Topics: Population, Genus, Catalysis, Ruthenium, Elevated plus maze
Papers published on a yearly basis
Papers
More filters
••
TL;DR: In this paper, a total of 264 rain events were sampled using a wet-only collector in central Sao Paulo State, Brazil, between January 2003 and July 2007, and principal component analysis showed that three components could explain 88% of the variance for measurements made throughout the year: PC1 (52%, biomass burning and soil dust resuspension); PC2 (26%, secondary aerosols); PC3 (10%, road transport emissions).
43 citations
••
TL;DR: The results indicated that C. tropicalis is susceptible to treatment with PG-EO, geraniol, and linalool, which could become options to prevent or treat this infection.
Abstract: Dental prosthesis supports Candida species growth and may predispose the oral cavity to lesions. C. tropicalis has emerged as a colonizer of prosthesis and has shown resistance to clinically used antifungal agents, which has increased the search for new antifungals. This work describes the effectiveness of fifteen essential oils (EOs) against C. tropicalis The EOs were obtained by hydrodistillation and were chemically characterized by gas chromatography-mass spectrometry. The antifungal activities of the EOs were evaluated by the microdilution method and showed that Pelargonium graveolens (Geraniaceae) (PG-EO) was the most effective oil. Geraniol and linalool were the major constituents of PG-EO. The 2,3-Bis-(2-Methoxy-4-Nitro-5-Sulfophenyl)-2H-Tetrazolium-5-Carboxanilide (XTT) assay showed that all the clinical C. tropicalis strains formed viable biofilms. Scanning electron microscopy examination of the biofilms revealed a complex architecture with basal layer of yeast cells and an upper layer of filamentous cells. Treatments with PG-EO, linalool, and geraniol significantly reduced the number of viable biofilm cells and inhibited biofilm formation after exposure for 48 h. PG-EO, geraniol, and linalool were not toxic to normal human lung fibroblasts (GM07492A) at the concentrations they were active against C. tropicalis Together, our results indicated that C. tropicalis is susceptible to treatment with PG-EO, geraniol, and linalool, which could become options to prevent or treat this infection.
43 citations
••
TL;DR: In this article, an electroanalytical methodology developed for square-wave voltammetry based in the electrochemical reduction in hanging mercury drop electrode (HMDE), which is simple, fast, reliable and sensitive for determination of moxifloxacin (MOXI) in tablets and spiked urine human samples, was presented.
43 citations
••
TL;DR: It is observed that, differently from what happens when the Ru(II) is placed at the center of the macrocycle, the peripheral groups cause an increase of the intersystem crossing processes, probably due to the structural distortion of the ring that implies a worse spin-orbit coupling, responsible for the inter system crossing mechanism.
Abstract: The present work employs a set of complementary techniques to investigate the influence of outlying Ru(II) groups on the ground- and excited-state photophysical properties of free-base tetrapyridyl porphyrin (H2TPyP). Single pulse and pulse train Z-scan techniques used in association with laser flash photolysis, absorbance and fluorescence spectroscopy, and fluorescence decay measurements, allowed us to conclude that the presence of outlying Ru(II) groups causes significant changes on both electronic structure and vibrational properties of porphyrin. Such modifications take place mainly due to the activation of nonradiative decay channels responsible for the emission quenching, as well as by favoring some vibrational modes in the light absorption process. It is also observed that, differently from what happens when the Ru(II) is placed at the center of the macrocycle, the peripheral groups cause an increase of the intersystem crossing processes, probably due to the structural distortion of the ring that i...
43 citations
••
TL;DR: In this paper, repeated-dose toxicity of three extracts from yacon leaves was evaluated in Wistar rats for 90 days, and it was concluded that terpenoids are the main toxic compounds in the leaves of yacon.
43 citations
Authors
Showing all 2195 results
Name | H-index | Papers | Citations |
---|---|---|---|
Jon Lloyd | 80 | 230 | 30995 |
Peter C. Ford | 74 | 495 | 20821 |
Frederico Guilherme Graeff | 60 | 183 | 12209 |
Marcus Lira Brandão | 54 | 243 | 9248 |
David W. Roubik | 54 | 177 | 10070 |
Richard J. Ward | 53 | 242 | 9502 |
Juan Cornejo | 49 | 147 | 6478 |
Norberto Peporine Lopes | 47 | 457 | 12031 |
Carlos Alemán | 47 | 634 | 11349 |
Klaus Hartfelder | 45 | 150 | 7708 |
Valtencir Zucolotto | 45 | 212 | 6253 |
Rosane Marina Peralta | 44 | 212 | 5701 |
Antonio Claudio Tedesco | 44 | 307 | 6778 |
Roberto M. Torresi | 44 | 213 | 5822 |
Zilá Luz Paulino Simões | 43 | 113 | 8020 |