About: Infrared images of heat fields around a linear heater in tree trunks: what can be learned about sap flow measurements?

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About: Infrared images of heat fields around a linear heater in tree trunks: what can be learned about sap flow measurements? Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	This contribution aims at improving the understanding of sap flow measurements in trees. Infrared heat field images taken around heating needles in sap transporting tree trunks are characterized by isotherms of elliptic shape with the heating needle in the lower focus. Increasing sap flow increases the eccentricity of the elliptic heat field. This dynamics of ellipses provides a simplified experimental - mathematical approach for the understanding and evaluation of the otherwise very complicated heat transfer- and distribution problem involved. The results obtained are used to discuss criteria for possible improved positioning patterns for needle sensors aimed for sap flow calculation using the dynamics of ellipses. This contribution aims at improving the understanding of sap flow measurements in trees. Infrared heat field images taken around heating needles in sap transporting tree trunks are characterized by isotherms of elliptic shape with the heating needle in the lower focus. Increasing sap flow increases the eccentricity of the elliptic heat field. This dynamics of ellipses provides a simplified experimental - mathematical approach for the understanding and evaluation of the otherwise very complicated heat transfer- and distribution problem involved. The results obtained are used to discuss criteria for possible improved positioning patterns for needle sensors aimed for sap flow calculation using the dynamics of ellipses. (en) Studie je zaměřena na lepší porozumění měření transpiračního proudu ve stromech. Infračervené snímkz tepelného pole měřiště transpiračního proudu je charkterizováno eliptickými isothermami se zdrojem tepla v jednom z ohnisek. Dynamika tvaru těchto elips představuje yjednodušený matematický model komplikovaného přenosu tepla v kmenech. (cs)
Title	Infrared images of heat fields around a linear heater in tree trunks: what can be learned about sap flow measurements? Infračervené snímky tepelného pole kolem lineárního zdroje tepla v kmenech: Jakou informaci přinášejí o měření transpiračního proudu? (cs) Infrared images of heat fields around a linear heater in tree trunks: what can be learned about sap flow measurements? (en)
skos:prefLabel	Infrared images of heat fields around a linear heater in tree trunks: what can be learned about sap flow measurements? Infračervené snímky tepelného pole kolem lineárního zdroje tepla v kmenech: Jakou informaci přinášejí o měření transpiračního proudu? (cs) Infrared images of heat fields around a linear heater in tree trunks: what can be learned about sap flow measurements? (en)
skos:notation	RIV/62156489:43410/06:00095663!RIV08-MSM-43410___
http://linked.open.../vavai/riv/strany	653;660
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM6215648902)
http://linked.open...iv/cisloPeriodika	7
http://linked.open...vai/riv/dodaniDat	2008
http://linked.open...aciTvurceVysledku	Nadyezhdina, Naděžda Čermák, Jan
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Mendelova univerzita v Brně / Lesnická a dřevařská fakulta
http://linked.open...dnocenehoVysledku	479695
http://linked.open...ai/riv/idVysledku	RIV/62156489:43410/06:00095663
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Ellipse,sap flow, linear heater, sensor geometry (en)
http://linked.open.../riv/klicoveSlovo	Ellipse sap flow linear heater sensor geometry
http://linked.open...odStatuVydavatele	FR - Francouzská republika
http://linked.open...ontrolniKodProRIV	[0EE45B244D32]
http://linked.open...i/riv/nazevZdroje	Annals of Forest Science
http://linked.open...in/vavai/riv/obor	BO
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...UplatneniVysledku	2006
http://linked.open...v/svazekPeriodika	63
http://linked.open...iv/tvurceVysledku	Čermák, Jan Nadyezhdina, Naděžda Tributsch, Helmut
http://linked.open...n/vavai/riv/zamer	Forest and Wood: the support of functionally integrated forest management and use of wood as a renewable raw material
issn	1286-4560
number of pages	8 (xsd:int)
http://localhost/t...ganizacniJednotka	43410

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