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Urban deforestation and urban development
Cunha-e-Sá, Maria A.; Franco, Sofia F.; Rosa, RenatoThis paper has developed a model of a single forest owner operating with perfect foresight in a dynamic open-city environment that allows for switching between alternative competing land uses (forest and urban use) at some point in the future. The model also incorporates external values of an even-aged standing forest in addition to the value of timber when it is harvested. Timber is exploited based on a multip...
Pharmacology and toxicology of diphenyl diselenide in several biological models
Rosa, Renato Moreira; Roesler, Rafael; Braga, Antonio Luiz; Saffi, Jenifer; Henriques, Joao Antonio PegasThe pharmacology of synthetic organoselenium compounds indicates that they can be used as antioxidants, enzyme inhibitors, neuroprotectors, anti-tumor and anti-infectious agents, and immunomodulators. In this review, we focus on the effects of diphenyl diselenide (DPDS) in various biological model organisms. DPDS possesses antioxidant activity, confirmed in several in vitro and in vivo systems, and thus has a p...
Genetic toxicity of three symmetrical diselenides in yeast
Rosa,Renato M; Guecheva,Temenouga N; Oliveira,Iuri M. de; Braga,Antônio L; Henriques,João A. PDiphenyl diselenide (DPDS) is an electrophilic reagent used in the synthesis of a variety of pharmacologically active organoselenium (OS) compounds. The aim of the present study was to investigate the mutagenic effects of three symmetrical derivatives from the prototype DPDS (p-chloride-phenyl-diselenide, p-methyl-phenyl-diselenide and p-methoxy-phenyl-diselenide) in yeast. In summary, the cellular effects of t...
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