Quinquangulin and Rubrofusarin: A Spectroscopy Study

In this work, excitation and emission spectra were evaluated in order to elucidate the properties of quinguangulin and rubrofusarin in water/ethanol mixture. The study demonstrates that the maximum excitation wavelength can be significantly modulated changing the proportion of organic solvent in the water/organic solvent system. Quinquangulin presented the higher wavelength of maximum excitation in an ethanol-water mixture containing 70% of water. Probably, the organization between ethanol and water molecules in this condition favors the formation of strong polar interactions with the pi* orbitals of naphthopyrones. It is interesting to register that the additional methyl group in quinquangulin seems to develop a decisive function related to the ability to formation of hydrogen bonds, altering significantly the mechanism of solute-solvent interaction. This work, which involves both theoretical and experimental analyses, demonstrates the relevance of the studies focused on solvent mixtures as well as emphasizes the potential of quinguangulin and rubrofusarin as photosensitizers.FAPESPFundacao AraucariaFAPEMIGCNPqCAPESUniv Fed Sao Joao Del Rei, Dept Zootecnia DEZOO, Campus Dom Bosco, BR-36301160 Sao Joao Del Rei, MG, BrazilUniv Vale Paraiba, Ave Shishima Hifumi 2911, BR-12244000 Sao Paulo, BrazilUniv Fed Sao Paulo, Dept Quim, Rua Prof Arthur Riedel 275, BR-09972270 Sao Paulo, BrazilUniv Fed Uberlandia, Inst Quim, Lab Fotoquim & Ciencia Mat, Uberlandia, MG, BrazilUniv Fed Goias, Dept Quim, Campus Catalao, Catalao, Go, BrazilUniv Estadual Maringa, Dept Quim, Av Colombo 5790,Zona 07, BR-87020900 Maringa, Parana, BrazilUniv Fed Rio de Janeiro, Campus Macae,Rua Aloisio da Silva Gomes 50, BR-27930560 Rio De Janeiro, BrazilUniv Estadual Campinas, Inst Quim, BR-13083970 Sao Paulo, BrazilUniv Fed Rio Grande, Escola Quim & Alimentos, Campus Carreiros Pavilhao Quim, BR-96201900 Rio Grande, RS, BrazilUniv Fed ABC, Ctr Engn Modelagem & Ciencias Sociais Aplicadas, Ave Estados 500, BR-09210580 Sao Paulo, BrazilUniv Fed ABC, Ctr Ciencias Nat & Humanas, Ave Estados 5001, BR-09210580 Sao Paulo, BrazilUniv Fed Sao Paulo, Dept Quim, Rua Prof Arthur Riedel 275, BR-09972270 Sao Paulo, BrazilFAPESP: 06/56701-3Fundacao AraucariaFAPEMIGCNPq: 474019/2012-8CNPq: 303872/2009-8CAPESWeb of Scienc

A Roadmap for HEP Software and Computing R&D for the 2020s

Particle physics has an ambitious and broad experimental programme for the coming decades. This programme requires large investments in detector hardware, either to build new facilities and experiments, or to upgrade existing ones. Similarly, it requires commensurate investment in the R&D of software to acquire, manage, process, and analyse the shear amounts of data to be recorded. In planning for the HL-LHC in particular, it is critical that all of the collaborating stakeholders agree on the software goals and priorities, and that the efforts complement each other. In this spirit, this white paper describes the R&D activities required to prepare for this software upgrade.Peer reviewe

Sistema de monitoreo para la evaluación de los resultados de aprendizajes en un curriculum basado en competencias: el caso del proceso de formación en los talleres de las carreras de Arquitectura y Publicidad del Campus Creativo UNAB

Tesis (Magíster en Docencia para la Educación Superior)La presente investigación tiene la finalidad de constatar la realidad que se manifiesta, en términos prácticos, de las evaluaciones en los talleres de las carreras de arquitectura y publicidad del Campus Creativo de la UNAB. Este punto es de vital importancia ya que una parte fundamental del éxito académico se basa en la obtención, por parte del alumno, de aprendizajes significativos y permanentes a lo largo del proceso formativo. Así mismo, se evidencia, de manera indirecta, la realidad de los docentes y directivos implicados en el proceso de aprendizaje, de un curriculum basado en competencias. Por ende, el objetivo general de la investigación consistió en diseñar una propuesta de mejoramiento, que permita promover un sistema de evaluación de los aprendizajes en un curriculum por competencias, para monitorear la adquisición de conocimientos, habilidades y actitudes obtenidas por los estudiantes en el proceso de formación en las carreras de arquitectura y publicidad del Campus Creativo UNAB. Para su cumplimiento, se estableció como eje de trabajo el paradigma fenomenológico, con una metodología cualitativa donde la muestra fue intencionada y donde los instrumentos de medición utilizados fueron, el focus group y las entrevistas semiestructuradas. Todos los datos obtenidos fueron analizados por una propuesta metodológica, llamada triangulación, que develó la inexistencia de un traspaso de modelo Campus Creativo hacia el cuerpo docente. Este hecho evidenció la carencia herramientas metodológicas necesarias para la aplicación en el aula del modelo de evaluación por competencias. Así, se concluye esta investigación con una serie de propuestas para subsanar las faltas detectadas

PRODUCTION OF Bacillus thuringiensis BIOPESTICIDE USING COMMERCIAL LAB MEDIUM AND AGRICULTURAL BY-PRODUCTS AS NUTRIENT SOURCES

Bacillus thuringiensis (Bt) is a Gram-positive bacterium naturally found in soil, water and grain dust, and can be cultivated in liquid, solid and semi-solid media. The objective of this work was to test different media to grow B. thuringiensis. The seed culture (strain 344, B. thuringiensis tolworthi, belonging to Embrapa Maize and Sorghum Microorganism Bank) was produced using shake flasks and grown in LB medium plus salts during 18 hours, incubated on a rotary shaker at 200 revolutions per minute (rpm) at 30oC for 96 hours. Medium 1 was composed of: Luria Bertani (LB) plus salts (FeSO4, ZnSO4, MnSO4, MgSO4), and 0.2% glucose; medium 2 was composed of 1.5% glucose, 0.5% soybean flour plus salts; and medium 3 was composed of liquid swine manure at 4% and 0.2% glucose. All three media were sterilized and inoculated with B. thuringiensis tolwothi (seed culture) at a stirrer speed of 200rpm, for 96 hours at 30oC. The pH was measured at regular intervals, viable spores were counted as c.f.u/mL, cell mass expressed in g/L- lyophilized, and spore counting per mL of medium. All three media showed pH variation during the fermentation process. Media 1 and 2 showed a tendency to shift toward a basic pH and medium 3 to an acidic pH. Media 1 and 2 showed the highest number of viable spores, 2.0 x 108 c.f.u/mL, within the 96 hours of incubation, however medium 2 showed a biomass dry weight of 1.18g/L. During the fermentation period, medium 1 showed the highest spore concentration, 1.4 x 109 spores/mL after 96h of fermentation. Efficiency against S. frugiperda first instar larvae showed that all Bt produced in all three media killed above 60% in the highest concentrations