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| OLIVEIRA,ALEX L. DE; ARAUJO,ADAMO DE S.; GADOTTI,GIZELE I.; VILLELA,FRANCISCO A.; BAUDET,LEOPOLDO. |
| ABSTRACT Currently, the domestic agricultural sector has become increasingly professionalized; therefore, measures aimed at safety in the workplace and monitoring of environmental risks have been gaining major importance in this scenario. Thus, this study aimed at assessing internal environmental conditions of four soybean processing plants (SPPs) operating with a screen-air machine, densimetric table and with or without spiral separator. These plants are in the state of Rio Grande do Sul (Brazil), being assessed on site considering every feature related to machinery and equipment, as well as technological level. Field evaluations comprised measurements of noise, illuminance and suspended dust. Results showed that none of the SPPs is in full accordance... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Seed processing; Noise map; Lighting study; Chemical agents. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000400673 |
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| Rodrigues,Cristiane; Oliveira,Virlei Álvaro de; Silveira,Pedro Marques da; Santos,Glenio Guimarães. |
| Knowledge of the soil physical properties, including the clay content, is of utmost importance for agriculture. The behavior of apparently similar soils can differ in intrinsic characteristics determined by different formation processes and nature of the parent material. The purpose of this study was to assess the efficacy of separate or combined pre-treatments, dispersion methods and chemical dispersant agents to determine clay in some soil classes, selected according to their mineralogy. Two Brazilian Oxisols, two Alfisols and one Mollisol with contrasting mineralogy were selected. Different treatments were applied: chemical substances as dispersants (lithium hydroxide, sodium hydroxide, and hexametaphosphate); pre-treatment with dithionite, ammonium... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical agents; Soil classes; Diagnostic horizon; Analysis methodology; Soil particles; Soil profile. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000500013 |
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| Cardoso,Celso Luíz; Redmerski,Roberta; Bittencourt,Nilza de Lucas Rodrigues; Kotaka,Cinthia Regiane. |
| The effectiveness of seven disinfectant compounds used in dentistry for a rapid decontamination of 32 gutta-percha cones adhered with Staphylococcus aureus, Enterococcus faecalis, Escherichia coli strains or Bacillus subtilis spores was compared. Cones were treated with 2% glutaraldehyde, 1% sodium hypochlorite, 70% ethyl alcohol, 1% and 0.3% iodine alcohol, 2% chlorhexidine, 6% hydrogen peroxide, and 10% polyvinylpyrrolidone-iodine, for 1, 5, 10, and 15 minutes. After treatment, each cone was transferred to thioglycollate broth and incubated at 37ºC for 7 days. The products were bactericidal after 1 to 5 minutes and, with exception of ethyl alcohol and iodine-alcohol, sporicidal after 1 to 15 minutes of exposure. Results suggest that chlorhexidine, sodium... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Chemical agents; Gutta-percha cones; Decontamination. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000100016 |
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