Estimation of water flow velocity in small plants using cold neutron imaging with D2O tracer
Estimation of water flow velocity in small plants using cold neutron imaging with D2O tracer
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DOI：
10.1016/j.nima.2009.01.187
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发表时间：
2009-06-21
影响因子：
1.4
通讯作者：
Manke, I.
中科院分区：
文献类型：
--
作者：
Matsushima, U.;Herppich, W. B.;Manke, I.
水流成像可以帮助更好地理解与植物水分胁迫相关的各种问题。这可能有助于充分了解植物的水分关系。本研究的目的是估计植物样品中的水流速度。切花月季（Rosa hybrida，var.“Milva”）作为样品。冷中子射线照相术（CNR）在德国柏林亥姆霍兹材料和能源中心的CONRAD进行。将D2 O和H2O可互换地注入样品的供水系统中。吸收D2 O后，由于D2 O的衰减系数小于H2O，中子透射率增加。玫瑰花梗中D_2O的替代被清楚地观察到。采用三种不同的光流算法，块匹配，Horn-Schunck和Lucas-Kanade，来计算D2 O示踪剂流的矢量。提供足够的空间和时间分辨率的序列图像的质量允许估计流矢量。(C)2009年由Elsevier B. V.出版
Water flow imaging may help to better understand various problems related to water stress of plants. It may help to fully understand the water relations of plants. The objective of this research was to estimate the velocity of water flow in plant samples. Cut roses (Rosa hybrida, var. 'Milva') were used as samples. Cold neutron radiography (CNR) was conducted at CONRAD, Helmholtz Center Berlin for Materials and Energy, Berlin, Germany. D2O and H2O were interchangeably injected into the water feeding system of the sample. After the uptake of D2O, the neutron transmission increased due to the smaller attenuation coefficient of D2O compared to H2O. Replacement of D2O in the rose peduncle was clearly observed. Three different optical flow algorithms, Block Matching, Horn-Schunck and Lucas-Kanade, were used to calculate the vector of D2O tracer flow. The quality of sequential images providing sufficient spatial and temporal resolution allowed to estimate flow vector. (C) 2009 Published by Elsevier B.V.