Electric signals for separation of earthworms (Eudrilus eugeniæ)
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Engenharia Agrícola e Ambiental (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662012001000015 |
Resumo: | The worm Eudrilus eugeniæ is a species adapted to tropical climates and is highly demanded as fishing bait, therefore possessing high economic value. Separation of worms from humus is typically performed by manual, mechanical, behavioral and electric methods. The objective of this study was to characterize electric pulses for separation of worms (Eudrilus eugeniæ) from humus. To determine separation efficiency of worms from humus, a controlled pulse generator was used with frequencies of 1 and 5 Hz, voltages of 100 and 200 V, peak widths of 2, 3 and 4 x 10-3 s and exposure times of 15 and 30 min. The electrical pulse characteristics which resulted in greatest separation efficiency were: 1 Hz, 2 x 10-3 s and 200 V; and the maximum displacement index was 80% which occurred under these conditions. The survival index was 100% for the pulses which resulted in the greatest separation indices. |
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Electric signals for separation of earthworms (Eudrilus eugeniæ)vermiculturevermicompostingelectric stimulationThe worm Eudrilus eugeniæ is a species adapted to tropical climates and is highly demanded as fishing bait, therefore possessing high economic value. Separation of worms from humus is typically performed by manual, mechanical, behavioral and electric methods. The objective of this study was to characterize electric pulses for separation of worms (Eudrilus eugeniæ) from humus. To determine separation efficiency of worms from humus, a controlled pulse generator was used with frequencies of 1 and 5 Hz, voltages of 100 and 200 V, peak widths of 2, 3 and 4 x 10-3 s and exposure times of 15 and 30 min. The electrical pulse characteristics which resulted in greatest separation efficiency were: 1 Hz, 2 x 10-3 s and 200 V; and the maximum displacement index was 80% which occurred under these conditions. The survival index was 100% for the pulses which resulted in the greatest separation indices.Departamento de Engenharia Agrícola - UFCG2012-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662012001000015Revista Brasileira de Engenharia Agrícola e Ambiental v.16 n.10 2012reponame:Revista Brasileira de Engenharia Agrícola e Ambiental (Online)instname:Universidade Federal de Campina Grande (UFCG)instacron:UFCG10.1590/S1415-43662012001000015info:eu-repo/semantics/openAccessMoraes,Maria J. deOliveira Filho,DellyMartins,José H.Santos,Luiz C.eng2012-09-25T00:00:00Zoai:scielo:S1415-43662012001000015Revistahttp://www.scielo.br/rbeaaPUBhttps://old.scielo.br/oai/scielo-oai.php||agriambi@agriambi.com.br1807-19291415-4366opendoar:2012-09-25T00:00Revista Brasileira de Engenharia Agrícola e Ambiental (Online) - Universidade Federal de Campina Grande (UFCG)false |
dc.title.none.fl_str_mv |
Electric signals for separation of earthworms (Eudrilus eugeniæ) |
title |
Electric signals for separation of earthworms (Eudrilus eugeniæ) |
spellingShingle |
Electric signals for separation of earthworms (Eudrilus eugeniæ) Moraes,Maria J. de vermiculture vermicomposting electric stimulation |
title_short |
Electric signals for separation of earthworms (Eudrilus eugeniæ) |
title_full |
Electric signals for separation of earthworms (Eudrilus eugeniæ) |
title_fullStr |
Electric signals for separation of earthworms (Eudrilus eugeniæ) |
title_full_unstemmed |
Electric signals for separation of earthworms (Eudrilus eugeniæ) |
title_sort |
Electric signals for separation of earthworms (Eudrilus eugeniæ) |
author |
Moraes,Maria J. de |
author_facet |
Moraes,Maria J. de Oliveira Filho,Delly Martins,José H. Santos,Luiz C. |
author_role |
author |
author2 |
Oliveira Filho,Delly Martins,José H. Santos,Luiz C. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Moraes,Maria J. de Oliveira Filho,Delly Martins,José H. Santos,Luiz C. |
dc.subject.por.fl_str_mv |
vermiculture vermicomposting electric stimulation |
topic |
vermiculture vermicomposting electric stimulation |
description |
The worm Eudrilus eugeniæ is a species adapted to tropical climates and is highly demanded as fishing bait, therefore possessing high economic value. Separation of worms from humus is typically performed by manual, mechanical, behavioral and electric methods. The objective of this study was to characterize electric pulses for separation of worms (Eudrilus eugeniæ) from humus. To determine separation efficiency of worms from humus, a controlled pulse generator was used with frequencies of 1 and 5 Hz, voltages of 100 and 200 V, peak widths of 2, 3 and 4 x 10-3 s and exposure times of 15 and 30 min. The electrical pulse characteristics which resulted in greatest separation efficiency were: 1 Hz, 2 x 10-3 s and 200 V; and the maximum displacement index was 80% which occurred under these conditions. The survival index was 100% for the pulses which resulted in the greatest separation indices. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-10-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662012001000015 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662012001000015 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1415-43662012001000015 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Departamento de Engenharia Agrícola - UFCG |
publisher.none.fl_str_mv |
Departamento de Engenharia Agrícola - UFCG |
dc.source.none.fl_str_mv |
Revista Brasileira de Engenharia Agrícola e Ambiental v.16 n.10 2012 reponame:Revista Brasileira de Engenharia Agrícola e Ambiental (Online) instname:Universidade Federal de Campina Grande (UFCG) instacron:UFCG |
instname_str |
Universidade Federal de Campina Grande (UFCG) |
instacron_str |
UFCG |
institution |
UFCG |
reponame_str |
Revista Brasileira de Engenharia Agrícola e Ambiental (Online) |
collection |
Revista Brasileira de Engenharia Agrícola e Ambiental (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Engenharia Agrícola e Ambiental (Online) - Universidade Federal de Campina Grande (UFCG) |
repository.mail.fl_str_mv |
||agriambi@agriambi.com.br |
_version_ |
1750297681490608128 |