Institution
State University of Santa Cruz
Education•Ilhéus, Brazil•
About: State University of Santa Cruz is a education organization based out in Ilhéus, Brazil. It is known for research contribution in the topics: Population & Species richness. The organization has 3266 authors who have published 4642 publications receiving 51876 citations. The organization is also known as: Universidade Estadual de Santa Cruz.
Papers published on a yearly basis
Papers
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TL;DR: A single-group proof-of-concept study to quantify acute effects of psilocybin in alcohol-dependent participants and to provide preliminary outcome and safety data, providing a strong rationale for controlled trials with larger samples to investigate efficacy and mechanisms.
Abstract: Several lines of evidence suggest that classic (5HT2A agonist) hallucinogens have clinically relevant effects in alcohol and drug addiction. Although recent studies have investigated the effects of psilocybin in various populations, there have been no studies on the efficacy of psilocybin for alcohol dependence. We conducted a single-group proof-of-concept study to quantify acute effects of psilocybin in alcohol-dependent participants and to provide preliminary outcome and safety data. Ten volunteers with DSM-IV alcohol dependence received orally administered psilocybin in one or two supervised sessions in addition to Motivational Enhancement Therapy and therapy sessions devoted to preparation for and debriefing from the psilocybin sessions. Participants’ responses to psilocybin were qualitatively similar to those described in other populations. Abstinence did not increase significantly in the first 4 weeks of treatment (when participants had not yet received psilocybin), but increased significantly follo...
657 citations
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TL;DR: In this article, the most interesting systems for the cyclohexane synthesis with different oxidants such as hydrogen peroxide, tert -butyl hydroperoxide and molecular oxygen were reviewed.
Abstract: Many efforts have been made to develop new catalysts to oxidize cyclohexane under mild conditions. Herein, we review the most interesting systems for this process with different oxidants such as hydrogen peroxide, tert -butyl hydroperoxide and molecular oxygen. Using H 2 O 2 , Na-GeX has been shown to be a most stable and active catalyst. Mesoporous TS-1 and Ti-MCM-41 are also stable, but the use of other metals such as Cr, V, Fe and Mo leads to leaching of the metal. Homogeneous systems based on binuclear manganese(IV) complexes have also been shown to be interesting. When t -BuOOH is used, the active systems are those phthalocyanines based on Ru, Co and Cu and polyoxometalates of dinuclear ruthenium and palladium. Microporous metallosilicates containing different transition metals showed leaching of the metal during the reactions. Molecular oxygen can be used directly as an oxidant and decreases the leaching of active species in comparison to hydrogen peroxide and tert -butyl hydroperoxide. Metal aluminophosphates (metal: Mn, Fe, Co, Cu, Cr V) are active and relatively stable under such conditions. Mn-AlPO-36 yields directly adipic acid, but large amounts of carboxylic acids should be avoided, as they cause metal leaching from the catalysts. Rare earth exchanged zeolite Y also shows good selectivity and activity. In the last part of the review, novel alternative strategies for the production of cyclohexanol and cyclohexanone and the direct synthesis of adipic acid are discussed.
585 citations
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TL;DR: The surface response methodologies: central composite design, Doehlert matrix and Box-Behnken design are discussed and applications of these techniques for optimization of sample preparation steps and determination of experimental conditions for chromatographic separations are presented.
535 citations
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TL;DR: It is proposed that the immigration of six million Europeans to Brazil in the 19th and 20th centuries is in large part responsible for dissipating previous ancestry dissimilarities that reflected region-specific population histories.
Abstract: Based on pre-DNA racial/color methodology, clinical and pharmacological trials have traditionally considered the different geographical regions of Brazil as being very heterogeneous. We wished to ascertain how such diversity of regional color categories correlated with ancestry. Using a panel of 40 validated ancestry-informative insertion-deletion DNA polymorphisms we estimated individually the European, African and Amerindian ancestry components of 934 self-categorized White, Brown or Black Brazilians from the four most populous regions of the Country. We unraveled great ancestral diversity between and within the different regions. Especially, color categories in the northern part of Brazil diverged significantly in their ancestry proportions from their counterparts in the southern part of the Country, indicating that diverse regional semantics were being used in the self-classification as White, Brown or Black. To circumvent these regional subjective differences in color perception, we estimated the general ancestry proportions of each of the four regions in a form independent of color considerations. For that, we multiplied the proportions of a given ancestry in a given color category by the official census information about the proportion of that color category in the specific region, to arrive at a “total ancestry” estimate. Once such a calculation was performed, there emerged a much higher level of uniformity than previously expected. In all regions studied, the European ancestry was predominant, with proportions ranging from 60.6% in the Northeast to 77.7% in the South. We propose that the immigration of six million Europeans to Brazil in the 19th and 20th centuries - a phenomenon described and intended as the “whitening of Brazil” - is in large part responsible for dissipating previous ancestry dissimilarities that reflected region-specific population histories. These findings, of both clinical and sociological importance for Brazil, should also be relevant to other countries with ancestrally admixed populations.
515 citations
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Sewanee: The University of the South1, Smithsonian Tropical Research Institute2, University of Panama3, Academy of Sciences of the Czech Republic4, University of Western Australia5, University of Évora6, University of York7, University of Helsinki8, University of Erlangen-Nuremberg9, Santa Barbara Museum of Natural History10, University of Victoria11, University of Bristol12, National Autonomous University of Mexico13, Blaise Pascal University14, State University of Santa Cruz15, Royal Belgian Institute of Natural Sciences16, University of Toulouse17, University of Würzburg18, Griffith University19, National Museum of Natural History20, Centre national de la recherche scientifique21, Research Institute for Nature and Forest22, Universidade Federal de Ouro Preto23, Université libre de Bruxelles24, American Museum of Natural History25
TL;DR: This work sampled the phylogenetic breadth of arthropod taxa from the soil to the forest canopy in the San Lorenzo forest, Panama using a comprehensive range of structured protocols and found that models based on plant diversity fitted the accumulated species richness of both herbivore and nonherbivore taxa exceptionally well.
Abstract: Most eukaryotic organisms are arthropods. Yet, their diversity in rich terrestrial ecosystems is still unknown. Here we produce tangible estimates of the total species richness of arthropods in a tropical rainforest. Using a comprehensive range of structured protocols, we sampled the phylogenetic breadth of arthropod taxa from the soil to the forest canopy in the San Lorenzo forest, Panama. We collected 6144 arthropod species from 0.48 hectare and extrapolated total species richness to larger areas on the basis of competing models. The whole 6000-hectare forest reserve most likely sustains 25,000 arthropod species. Notably, just 1 hectare of rainforest yields >60% of the arthropod biodiversity held in the wider landscape. Models based on plant diversity fitted the accumulated species richness of both herbivore and nonherbivore taxa exceptionally well. This lends credence to global estimates of arthropod biodiversity developed from plant models.
455 citations
Authors
Showing all 3284 results
Name | H-index | Papers | Citations |
---|---|---|---|
Virupax C. Baligar | 47 | 216 | 9251 |
Dennis Rödder | 39 | 157 | 4963 |
Jacques H. C. Delabie | 38 | 285 | 5617 |
Rodrigo L. Moura | 36 | 130 | 4825 |
Martin Brendel | 33 | 147 | 3446 |
Antonio J. F. Carvalho | 31 | 107 | 3182 |
Leandro Kerber | 30 | 75 | 2407 |
Walter Nei Lopes dos Santos | 29 | 81 | 3021 |
Andre Rodrigues | 29 | 112 | 2556 |
Ana Lúcia Tasca Gois Ruiz | 28 | 201 | 3329 |
Deborah Faria | 27 | 71 | 2693 |
Henri Plana | 26 | 86 | 1660 |
Boaz G. Oliveira | 25 | 75 | 1432 |
Nicolas Carels | 24 | 68 | 1982 |
Alex-Alan Furtado de Almeida | 23 | 90 | 1852 |