Electric signals for separation of earthworms (Eudrilus eugeniæ)

Detalhes bibliográficos
Autor(a) principal: Moraes, Maria J. de
Data de Publicação: 2012
Outros Autores: Oliveira Filho, Delly, Martins, José H., Santos, Luiz C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: LOCUS Repositório Institucional da UFV
Texto Completo: http://dx.doi.org/10.1590/S1415-43662012001000015
http://www.locus.ufv.br/handle/123456789/12487
Resumo: The worm Eudrilus eugeniœ 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 eugeniœ) 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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spelling Electric signals for separation of earthworms (Eudrilus eugeniæ)VermicultureVermicompostingElectric stimulationThe worm Eudrilus eugeniœ 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 eugeniœ) 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.A minhoca (Eudrilus eugeniœ) é uma espécie adaptada ao clima tropical, razão pela qual é bastante demandada como isca para pesca e tem grande valor econômico na atualidade. Normalmente, a separação de minhocas do húmus é realizada por método manual, mecânico, comportamental e elétrico. O objetivo desta pesquisa foi, caracterizar pulsos elétricos na separação de minhocas (Eudrilus eugeniae) do húmus. Para determinar a eficiência de separação de minhocas do húmus foram utilizados um gerador de pulsos controlados com: frequência de 1 e 5 Hz, tensões de 100 e 200 volts, duração do patamar de 2, 3 e 4 x 10-3 s e tempo de exposição de 15 e 30 min. As características elétricas dos pulsos, que resultaram na maior eficiência de separação, foram: 1 Hz, 2 x 10-3 s e 200 V. O índice de deslocamento máximo foi de 80%, ocorrendo na frequência de 1 Hz, com patamar de pulso de 2 x 10-3 s e tensão de 200 V. O índice de sobrevivência foi de 100% para os pulsos que resultaram em melhores índices de separação.Revista Brasileira de Engenharia Agrícola e Ambiental2017-10-30T10:54:46Z2017-10-30T10:54:46Z2012-07-16info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlepdfapplication/pdf1807-1929http://dx.doi.org/10.1590/S1415-43662012001000015http://www.locus.ufv.br/handle/123456789/12487engv.16, n.10, p.1137–1142, Oct. 2012Moraes, Maria J. deOliveira Filho, DellyMartins, José H.Santos, Luiz C.info:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFV2024-07-12T07:12:20Zoai:locus.ufv.br:123456789/12487Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452024-07-12T07:12:20LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)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 eugeniœ 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 eugeniœ) 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 2012-07-16
2017-10-30T10:54:46Z
2017-10-30T10:54:46Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv 1807-1929
http://dx.doi.org/10.1590/S1415-43662012001000015
http://www.locus.ufv.br/handle/123456789/12487
identifier_str_mv 1807-1929
url http://dx.doi.org/10.1590/S1415-43662012001000015
http://www.locus.ufv.br/handle/123456789/12487
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv v.16, n.10, p.1137–1142, Oct. 2012
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv pdf
application/pdf
dc.publisher.none.fl_str_mv Revista Brasileira de Engenharia Agrícola e Ambiental
publisher.none.fl_str_mv Revista Brasileira de Engenharia Agrícola e Ambiental
dc.source.none.fl_str_mv reponame:LOCUS Repositório Institucional da UFV
instname:Universidade Federal de Viçosa (UFV)
instacron:UFV
instname_str Universidade Federal de Viçosa (UFV)
instacron_str UFV
institution UFV
reponame_str LOCUS Repositório Institucional da UFV
collection LOCUS Repositório Institucional da UFV
repository.name.fl_str_mv LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)
repository.mail.fl_str_mv fabiojreis@ufv.br
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