The Federal University of Rio Grande do Sul is one of the largest federal universities in Brazil. It is almost completely located in Porto Alegre, with four campuses , some isolated buildings and some isolated units in other cities. UFRGS is among the best Brazilian universities, and has one of the greatest numbers of scientific publications. UFRGS has over 27,000 undergraduate students and over 9,300 graduate students. The university has more than 2,500 professors. As a public federal institution, the students do not have to pay tuition fees to enroll in the courses offered by the university. To be admitted to one of the courses offered by UFRGS, a candidate must be approved in a yearly competitive exam, called the vestibular.The institute also has a profound political history. Between 1964 and 1969, during the worst years of the military dictatorship, 33 professors were eliminated, as well as a good number of students. The experience echoes a tradition of social commitment and combativeness.The institute has since been active not only in forming new generations of students, but also in the production of knowledge through high-quality research and consultancies. Today, many of the high-ranking officials in government as well as the majority of the history, philosophy and social science teachers in smaller universities throughout the state were educated in the institution.The climate of intellectual debate and analysis of public issues has also been important in training students to work for non-governmental and governmental organisations which contribute to the critical reflection and planning of development programs. Among the graduates of UFRGS, there are three Brazilian presidents: Getúlio Vargas, João Goulart, and Dilma Rousseff. Wikipedia.
Dupont J.,Federal University of Rio Grande do Sul
Accounts of Chemical Research
Ionic liquids (ILs), a special group of classical molten salts, are widely used in various fields of science. Historically, researchers have tested ILs out of curiosity or to improve a specific property in a particular system in many areas of chemistry or materials science. However, today, ILs are far from being simple chemical curiosities and sit at the center of various green industrial innovation processes, where they play important roles in materials extraction, reactive catalytic supports, spatial devices, and biotransformations.In this Account, we describe a journey into a nanostructured universe to better understand the unique properties of ionic liquids and their modern applications. Because molten salts have been known for centuries and have found limited uses, we try to explain why modern nonaqueous ILs deserve increased interest and curiosity. We discuss the characteristics that distinguish modern nonaqueous ILs and compare them with classical molten salts.One of the main differences between room temperature ILs, especially those based on imidazolium cations, and simple molten salts, is the molecular asymmetry built into at least one of the ions. This asymmetry in modern, nonaqueous ILs opposes the strong charge ordering due to ionic interactions that normally would cause the system to crystallize. In addition, the presence of a cooperative network of hydrogen bonds between the cations and anions induces structural directionality (the entropic effect). Therefore, modern ILs form preorganized structures, mainly through hydrogen bonding, that induce structural directionality. In contrast, classical salts form aggregates only through ionic bonds. In other words, weak interactions order the structures in modern ILs while charges order the structure within classical salts.ILs cannot be regarded as merely homogeneous solvents. In fact, ILs form extended hydrogen-bond networks with polar and nonpolar nano domains and therefore are by definition "supramolecular" fluids. Thus, ILs are better described as hydrogen-bonded polymeric supramolecules of the type [(DAI)m(X)m-n)] n+[(DAI)m-n(X)x)]n-. This structural pattern is a general trend for both the solid and the liquid phase and is apparently maintained to a large extent even in the gas phase. This structural organization of ILs can be used as entropic drivers (the "IL effect") for the preparation of well-defined nanoscale structures with extended order, either in the bulk phase or at the gas/vacuum interface. © 2011 American Chemical Society. Source
Hebrew University of Jerusalem, University of Sao Paulo and Federal University of Rio Grande do Sul | Date: 2014-01-08
The present invention relates to fluorine substituted CBD compounds, compositions thereof and uses thereof for the preparation of medicaments.
Basf, Federal University of Rio Grande do Sul, Federal University of Santa Maria, Federal Technological University of Paraná and Federal University of Mato Grosso | Date: 2013-02-27
The present invention relates to the use of an agrochemical composition comprising at least one specific herbicide and at least one specific fungicide for controlling undesired vegetation in corn (maize) cultures. The invention further relates to a method for controlling undesired vegetation in corn cultures.
Basf, Federal Technological University of Paraná, Federal University of Mato Grosso, Federal University of Rio Grande do Sul and Federal University of Santa Maria | Date: 2013-02-27
The present invention relates to the use of an agrochemical composition comprising at least one specific herbicide and at least one specific fungicide for controlling undesired vegetation in soybean cultures and for the desiccation and/or defoliation of soybeans. The invention further relates to a method for controlling undesired vegetation in soybean cultures and to a method for the desiccation and/or defoliation of soybean plants.
Biolab Sanus Farmaceutia Ltda. and Federal University of Rio Grande do Sul | Date: 2013-08-30
The present invention relates to a pharmaceutical composition for topical application for the treatment of alopecia, said composition comprising polymeric nanoparticles, preferably nanocapsules containing two active ingredients, finasteride and minoxidil, additives and a pharmaceutically acceptable carrier. The invention further includes a process for the preparation of polymeric nanoparticles, preferably nanocapsules of finasteride and minoxidil, a composition suitable for topical application for the treatment of alopecia, as well as the use of said nanocapsules for the preparation of a pharmaceutical composition.