Encontrados 11 documentos, a visualizar página 1 de 2
Remoção dos hormônios 17β-estradiol e 17 α-etinilestradiol de soluções aquosas ...
Andreia N. Fernandes; Marcelo Giovanela; Carlos A. P. Almeida; Valdemar I. Esteves; Maria M. D. Sierra; Marco T. GrassiREMOVAL OF THE HORMONES 17b-ESTRADIOL AND 17a-ETHINYLESTRADIOL FROM AQUEOUS SOLUTIONS EMPLOYING A DECOMPOSED PEAT AS ADSORBENT MATERIAL. This paper describes the adsorption of 17b-estradiol (E2) and 17a-ethinylestradiol (EE2) from aqueous solution by decomposed peat. The peat presented a good adsorption process, close to 76.2% for E2 removal and approximately 55.0% for EE2. Moreover, the results indicated a pro...
Fish larvae quality descriptors: an appraisal of methods for red porgy Pagrus p...
Andrade, Carlos A. P.; Nogueira, N.; Silva, Paula; Cordeiro, Nereida; Cunha, M. E.; Pousão-Ferreira, P.; Ribeira, Laura; Bandarra, N.; Gavaia, Paulo J.Quality control in fish hatcheries is of paramount importance to achieve the desired characteristics of larvae and fry, either for the market or release to the wild. Quality programmes are applied in a day to day basis having direct implications for production management and final costs of product. Most common criteria used for larval quality assessment are morphometrics, condition factor, histometrical indices...
Development of instrumentation for amperometric and coulometric detection using...
Coutinho,Cláudia F. B.; Coutinho,Lincoln F. M.; Lanças,Fernando M.; Câmara,Carlos A. P.; Nixdorf,Suzana L.; Mazo,Luiz H.In this work it is presented the development of a simple, portable and inexpensive instrumentation for amperometric and coulometric detection in different analytical instrumentation systems utilizing ultramicroelectrodes. The software, developed in LabVIEW 7.1TM, is capable to carry out three main detection techniques (amperometric, pulsed amperometric and coulometric detection) and a voltammetric technique (cy...
Influência da vibração das hastes e da velocidade de deslocamento da colhedora ...
Oliveira,Ezequiel de; Silva,Fábio M. da; Salvador,Nilson; Figueiredo,Carlos A. P.Hoje, já existem vários estudos sobre a eficiência operacional de colheita mecanizada do café, porém pouco se sabe sobre a influência da vibração das hastes e a velocidade de deslocamento da colhedora nesse processo. Assim, este trabalho teve por objetivo avaliar a influência da vibração das hastes e da velocidade de deslocamento da colhedora no processo de colheita mecanizada do café. O trabalho foi desenvolvi...
Control of multi-resistant bacteria and ventilator-associated pneumonia: is it ...
Jukemura,Elisa M.; Burattini,Marcelo N.; Pereira,Carlos A.P.; Braga,Alfésio L.F.; Medeiros,Eduardo A.S.Potent antimicrobial agents have been developed as a response to the development of antibiotic-resistant bacteria, which especially affect patients with prolonged hospitalization in Intensive Care Units (ICU) and who had been previously treated with antimicrobials, especially third-generation cephalosporins.This study was to determine how changes in the empirical treatment of infections in ICU patients affect t...
Characterization and strengthening a "ghost" building
Barros, Joaquim A. O.; Ribeiro, Alberto F.; Oliveira, Carlos A. P.; Cunha, Bento J. C. F.In the middle of the eighties it was intended to build a one family dwelling at a North Portuguese Region, but a much bigger edification was constructed, without any design elements. At the end of the nineties this construction was acquired, and another architectonic and functional configuration was designed for this space. Since there were not any elements available for the existent construction, it was carrie...
Core-and-shell nature of Stöber silica particles
Leite,Carlos A. P.; Souza,Elizabeth F. de; Galembeck,FernandoTwo different samples of monodisperse Stöber silica particles were examined in the analytical transmission electron microscope, using different imaging modes: bright-field, dark-field, energy-loss and elemental distribution maps. The particles (effective diameters = 141 and 36 nm) are formed by domains of variable O/Si ratio, which is consistent with a variable degree of hydration, and they coexist with particl...
Mycoflora and aflatoxigenic species in derivatives of milled rice
LIMA,Carlos A. P.; ORSI,Reinaldo B.; DILKIN,Paulo; CORRÊA,BeneditoThirty samples of rough rice stored for 6, 12 and 24 months in government authorized warehouses of the state of Rio Grande do Sul, Brazil, were simultaneously collected. After milling of the product, 90 samples (30 of polished rice, 30 of rice bran and 30 of rice hull) were evaluated for their mycoflora, aflatoxigenic species and aflatoxin contamination. The following fungi, listed in decreasing order of freque...
PS-HEMA latex fractionation by sedimentation and colloidal crystallization
Cardoso,André H.; Leite,Carlos A.P.; Galembeck,FernandoA poly(styrene-co-hydroxyethylmethacrylate) latex underwent sedimentation under gravity followed by an spontaneous and extensive colloidal crystallization. It was then fractionated in three visually distinguishable layers. Latex aliquots layers were sampled at different heigths and the particles were characterized by PCS, microelectrophoresis, infrared spectra and analytical electron microscopy. The major fract...
Entamoeba histolytica: detection of coproantigens by purified antibody in the c...
Urdaneta,Haidee; Guimarães,Semíramis; Silva,Edward F.; Tavares,Carlos A. P.A sensitive and specific Capture Sandwich ELISA (CSE) was developed using polyclonal purified rabbit antibodies against three different axenic strains of Entamoeba histolytica: CSP from Brazil and HM1 - IMSS from Mexico, for the detection of coproantigens in fecal samples. Immunoglobulin G (IgG) againstis E. histolytica was isolated from rabbits immunized with throphozoites whole extract in two stages: affinity...
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