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 & Catalysis. The organization has 2143 authors who have published 3674 publications receiving 71071 citations. The organization is also known as: FFCLRP & FFCLRP-USP.
Topics: Population, Catalysis, Gene, Genus, Ruthenium
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TL;DR: This study investigates the production of glucoamylase from Aspergillus phoenicis in Machado Benassi medium using 1% maltose as carbon source and finds that the enzyme was totally stable at 30–65 °C for 1 h, and the pH range was 3.0–6.0.
Abstract: This study investigates the production of glucoamylase from Aspergillus phoenicis in Machado Benassi (MB) medium using 1% maltose as carbon source. The maximum amylase activity was observed after four days of cultivation, on static conditions at 30 °C. Glucoamylase production was induced by maltose and inhibited by different glucose concentrations. The optimum of temperature and pH were 60–65 °C, and 4.5 or 5.0 to sodium acetate and Mcllvaine buffers, respectively. It was observed that the enzyme was totally stable at 30–65 °C for 1 h, and the pH range was 3.0–6.0. The enzyme was mainly activated by manganese (176%), and calcium (130%) ions. The products of starch hydrolysis were analyzed by thin layer chromatography and after 3 h, only glucose was detected, characterizing the amylolytic activity as a glucoamylase.
25 citations
TL;DR: Molecular analyses showed that the COI gene is an efficient marker for separating these two species and that traditional characteristics do not allow for the correct identification of juveniles of these species, and confirms the importance of the association between molecular and comparative morphology analyses in a fisheries and biodiversity context.
25 citations
TL;DR: A pilot study to test the applicability of a thermoluminescent dosimetric system for performing in vivo entrance dose measurements in external photon beam radiotherapy demonstrated the value of thermolumscent Dosimetry as a treatment verification method and its applicability as a part of a quality assurance program in radiotherapy.
25 citations
TL;DR: Although lacking catalytic activity, the Lys49-PLA(2)s damage artificial membranes by a Ca(2+)-independent mechanism, and demonstrate a potent bactericidal effect, suggesting a common mechanism of membrane damage underlies the two effects.
25 citations
TL;DR: In this paper, the conformational preferences and orbital interactions of N, N -dimethyl-2-fluoroacetamide (1), N, N-dimethyl 2-chloroacetamide(2), N, D-dimethylaminoacetamide-2 (D-Biodoacetam) (3), D-Dimethyl 2 -Bromoaceta (4) and N, Ddimethyl2-Iodoacetamide-(5) (6) were analyzed using experimental infra-red data, theoretical calculations and NBO analysis.
Abstract: Conformational preferences and orbital interactions of N , N -dimethyl-2-fluoroacetamide ( 1 ), N , N -dimethyl-2-chloroacetamide ( 2 ), N , N -dimethyl-2-bromoacetamide ( 3 ) and N , N -dimethyl-2-iodoacetamide ( 4 ) were analyzed using experimental infra-red data, theoretical calculations and NBO analysis. The conformational equilibria of compounds 1 – 4 can be represented by their cis and gauche rotamers. The gauche form of 1 is stable in the vapor phase and in a non-polar solvent, but the cis is predominant in a polar solvent. For 2 – 4 the gauche form is more stable than the cis , in both the vapor and liquid phases. These conformational preferences were attributed to the orbital interaction between two antibonding orbitals, π* C O →σ* C–X . This unexpected interaction was possibly due to the high (0.3) electron density on π* C O , which results from the interaction between one nitrogen lone pair and π* C O .
25 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 |