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MR study of water distribution in a beech (Fagus sylvatica) branch using relaxometry methods
ID
Mikac, Urška
(
Avtor
),
ID
Merela, Maks
(
Avtor
),
ID
Oven, Primož
(
Avtor
),
ID
Sepe, Ana
(
Avtor
),
ID
Serša, Igor
(
Avtor
)
PDF - Predstavitvena datoteka,
prenos
(906,29 KB)
MD5: 55D3539A4C65D3D7A08D8F1FD96374CA
URL - Izvorni URL, za dostop obiščite
https://www.mdpi.com/1420-3049/26/14/4305
Galerija slik
Izvleček
Wood is a widely used material because it is environmentally sustainable, renewable and relatively inexpensive. Due to the hygroscopic nature of wood, its physical and mechanical properties as well as the susceptibility to fungal decay are strongly influenced by its moisture content, constantly changing in the course of everyday use. Therefore, the understanding of the water state (free or bound) and its distribution at different moisture contents is of great importance. In this study, changes of the water state and its distribution in a beech sample while drying from the green (fresh cut) to the absolutely dry state were monitored by 1D and 2D $^1$H NMR relaxometry as well as by spatial mapping of the relaxation times T$_1$ and T$_2$. The relaxometry results are consistent with the model of homogeneously emptying pores in the bioporous system with connected pores. This was also confirmed by the relaxation time mapping results which revealed the moisture transport in the course of drying from an axially oriented early- and latewood system to radial rays through which it evaporates from the branch. The results of this study confirmed that MRI is an efficient tool to study the pathways of water transport in wood in the course of drying and is capable of determining the state of water and its distribution in wood.
Jezik:
Angleški jezik
Ključne besede:
magnetic resonance imaging (MRI)
,
relaxation times
,
beech (Fagus sylvatica)
,
wood
,
moisture content (MC)
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
BF - Biotehniška fakulteta
Status publikacije:
Objavljeno
Različica publikacije:
Objavljena publikacija
Leto izida:
2021
Št. strani:
10 str.
Številčenje:
Vol. 26, iss. 14, art. 4305
PID:
20.500.12556/RUL-135993
UDK:
53
ISSN pri članku:
1420-3049
DOI:
10.3390/molecules26144305
COBISS.SI-ID:
71037699
Datum objave v RUL:
06.04.2022
Število ogledov:
545
Število prenosov:
90
Metapodatki:
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Objavi na:
Gradivo je del revije
Naslov:
Molecules
Skrajšan naslov:
Molecules
Založnik:
MDPI
ISSN:
1420-3049
COBISS.SI-ID:
18462981
Licence
Licenca:
CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:
http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:
To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:
16.07.2021
Projekti
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
P1-0060
Naslov:
Eksperimentalna biofizika kompleksnih sistemov in slikanje v biomedicini
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
P4-0015
Naslov:
Les in lignocelulozni kompoziti
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
J1-7042
Naslov:
Raziskave lesa kot materiala in tkiva živih dreves z MRI
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