Química de materiais em 25 anos de SBQ

Communications on Chemistry of Materials topics were already presented in the first annual meetings of the Brazilian Chemical Society, dispersed throughout various meeting sections. The SBQ Materials Chemistry division was organized in 1993, attracting those members with an interest in the composition, structure and properties of materials, as related to their functions. This paper is an account of the development of Materials Chemistry research in Brazil, based on the SBQ annual meetings data.

Twelve Etudes, Op. 25

Soitinnus: Piano.

Instal•lació d'un reactor químic en una indústria farmacèutica

L’objecte del projecte és l’ampliació de la línia de producció d’una indústria farmacèutica dimensionant la fontaneria i instal•lant el reactor químic. Els antecedents són els seguents: en el Desembre de 2013,una indústria farmacèutica decideix ampliar la producciód’una línia existent de treball, instal•lant un reactor químic en paral•lel a la línia deproducció existent. Al Gener de 2014 es decideix adaptar una zona que s’utilitza com a magatzem per fer la nova producció. Per tant s’ha d’adaptar la zona com a Sala Blanca per complir amb la seva nova funcionalitat. A Febrer de 2014 es contracta un enginyer per redactar el projecte de l’adaptació de la Sala Blanca, així com les instal•lacions necessàries per posar en funcionament el Reactor químic adquirit pel client

Program hosting in communications environment with Reactor and thread pool approach

In this thesis concurrent communication event handling is implemented using thread pool approach. Concurrent events are handled with a Reactor design pattern and multithreading is implemented using a Leader/Followers design pattern. Main focus is to evaluate behaviour of implemented model by different numbers of concurrent connections and amount of used threads. Furthermore, model feasibility in a PeerHood middleware is evaluated. Implemented model is evaluated with created test environment which enables concurrent message sending from multiple connections to the system under test. Messages round trip times are measured in the tester application. In the evaluation processing delay into system is simulated and influence of delay to the average round trip time is analysed.

25 anos de quimiometria no Brasil

Chemometric activities in Brazil are described according to three phases: before the existence of microcomputers in the 1970s, through the initial stages of microcomputer use in the 1980s and during the years of extensive microcomputer applications of the ´90s and into this century. Pioneering activities in both the university and industry are emphasized. Active research areas in chemometrics are cited including experimental design, pattern recognition and classification, curve resolution for complex systems and multivariate calibration. New trends in chemometrics, especially higher order methods for treating data, are emphasized.

La Sociedad de Beneficencia de Señoras del Rosario: 160 años en manos de mujeres rosarinas (25 de junio de 1854-25 de junio 2014)

Las Señoras del Rosario inauguraron su Sociedad de Beneficencia el 25 de junio de 1854. El objetivo de las mujeres rosarinas fue garantizar la supervivencia de los enfermos y de las enfermas de la sociedad civil, y por ello decidieron crear un hospital en la zona más alejada del núcleo urbano, que hoy corresponde a la zona macrocéntrica de la ciudad. Esta Sociedad fue la primera de la República Argentina que se dedicó a la atención de la salud, y por ello en octubre del año siguiente las socias decidieron fundar el primer Hospital de Caridad de la ciudad destinado a los habitantes carentes de recursos y no militares de profesión.

A 25 años de los saqueos. Una expresión del conflicto: Dibujos de niños y niñas de 8 y 9 años.

En este artículo se analiza uno de los casos más conocidos y recordados de la historia contemporánea de la ciudad de Rosario de la República Argentina: la reacción de la sociedad civil ante la terrible crisis económica producida en el país en el año 1989, que condujo a la caída del gobierno democrático del radical Raúl Alfonsín, es decir, la primera presidencia democrática que había sido recuperada después de la última dictadura militar de los años 1976 a 1983. El trabajo recupera los dibujos que llevaron adelante los niños y niñas de 8 o 9 años, los cuales participaron en el saqueo de supermercados durante los últimos días del mes de mayo de 1989.

[Halllieder op. 25]

Soitinnus: lauluääni (sopraano), piano.

Degradação de corantes ácidos por processos oxidativos avançados usando um reator com disco rotatório de baixa velocidade

Three technologies were tested (TiO2/UV, H2O2/UV, and TiO2/H2O2/UV) for the degradation and color removal of a 25 mg L-1 mixture of three acid dyes: Blue 9, Red 18, and Yellow 23. A low speed rotating disc reactor (20 rpm) and a H2O2 concentration of 2.5 mmol L-1 were used. The dyes did not significantly undergo photolysis, although they were all degraded by the studied advanced oxidation processes. With the TiO2/H2O2/UV process, a strong synergism was observed (color removal reached 100%). Pseudo first order kinetic constants were estimated for all processes, as well as the respective apparent photonic efficiencies.

Verba Davidis Ps. XXXVII. v. 25

Invocatio: I.N.J.

De Canaane servo servorum, Gen. IX: v. 25

Invocatio: Q.F.F.Q.S.

Degradação eletroquímica do cloranfenicol em reator de fluxo

This paper reports a study of electrochemical degradation of the chloramphenicol antibiotic in aqueous medium using a flow-by reactor with DSA® anode. The process efficiency was monitored by chloramphenicol concentration analysis with liquid chromatography (HPLC) during the experiments. Analysis of Total Organic Carbon (TOC) was performed to estimate the degradation degree and Ion Chromatography (IC) was performed to determinate inorganic ions formed during the eletrochemical degradation process. In electrochemical flow-by reactor, 52% of chloramphenicol was degraded, with 12% TOC reduction. IC analysis showed the production of chloride ions (25 mg L-1), nitrate ions (6 mg L-1) and nitrite ions (4.5 mg L-1).