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231223s2006 xx ||||| 00| ||eng c |
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|a pubmed24n0545.xml
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|a (DE-627)NLM163486026
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|a (NLM)16771986
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|a DE-627
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|e rakwb
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|a eng
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|a Rosner, Sabine
|e verfasserin
|4 aut
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|a Extraction of features from ultrasound acoustic emissions
|b a tool to assess the hydraulic vulnerability of Norway spruce trunkwood?
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|c 2006
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 30.08.2006
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|a Date Revised 29.01.2022
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|a published: Print
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|a Citation Status MEDLINE
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|a The aim of this study was to assess the hydraulic vulnerability of Norway spruce (Picea abies) trunkwood by extraction of selected features of acoustic emissions (AEs) detected during dehydration of standard size samples. The hydraulic method was used as the reference method to assess the hydraulic vulnerability of trunkwood of different cambial ages. Vulnerability curves were constructed by plotting the percentage loss of conductivity vs an overpressure of compressed air. Differences in hydraulic vulnerability were very pronounced between juvenile and mature wood samples; therefore, useful AE features, such as peak amplitude, duration and relative energy, could be filtered out. The AE rates of signals clustered by amplitude and duration ranges and the AE energies differed greatly between juvenile and mature wood at identical relative water losses. Vulnerability curves could be constructed by relating the cumulated amount of relative AE energy to the relative loss of water and to xylem tension. AE testing in combination with feature extraction offers a readily automated and easy to use alternative to the hydraulic method
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|a Evaluation Study
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Water
|2 NLM
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|a 059QF0KO0R
|2 NLM
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|a Klein, Andrea
|e verfasserin
|4 aut
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|a Wimmer, Rupert
|e verfasserin
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|a Karlsson, Bo
|e verfasserin
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|i Enthalten in
|t The New phytologist
|d 1979
|g 171(2006), 1 vom: 15., Seite 105-16
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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|g volume:171
|g year:2006
|g number:1
|g day:15
|g pages:105-16
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|a GBV_ILN_350
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|a AR
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|d 171
|j 2006
|e 1
|b 15
|h 105-16
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