scholarly journals A gas exchange measurement system and its application to rice and cassava leaves.

1984 ◽  
Vol 53 (4) ◽  
pp. 472-478 ◽  
Author(s):  
Akio KANDA ◽  
Katsu IMAI ◽  
Takashi MORIYA ◽  
Shigeru HANDA ◽  
Teijiro TERAJIMA
Keyword(s):  
Gas Exchange ◽  
Measurement System ◽  
Cassava Leaves ◽  
Exchange Measurement

scholarly journals Development of Gas-Exchange Measurement System for Micropropagated Plantlets Using 13CO2.

1999 ◽  
Vol 55 (1) ◽  
pp. 41-45
Author(s):  
Nancy K. OKAMURA ◽  
Eiji GOTO ◽  
Tadashi TAKAKURA ◽  
Kenji KURATA
Keyword(s):  
Gas Exchange ◽  
Measurement System ◽  
Exchange Measurement

scholarly journals Design of a Real-Time Gas-Exchange Measurement System for Crop Stands in Environmental Scenarios

Agronomy ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 737
Author(s):  
Hans-Peter Kläring ◽  
Oliver Körner
Keyword(s):  
Gas Exchange ◽  
Exchange Rates ◽  
Real Time ◽  
Measurement System ◽  
General Principle ◽  
Root Zone ◽  
Crop Model ◽  
Flow Meters ◽  
Physiological Models ◽  
Exchange Measurement

In contrast to conducting measurements on single plants, canopy gas exchange monitored continuously and for large batches of plants can give high-value data for crop physiological models. To this end, a system including eight airtight greenhouse cabins with a ground area of 28.8 m2 and a volume of 107.8 m3 each was designed for measuring the CO2 and H2O gas exchange of crop stands following the general principle of semi-open chambers. The measuring facility consists of a set of mass flow meters allowing air exchange rates between 0.5 h−1 and 19 h−1 (i.e., m3 gas per m3 greenhouse air per hour) and CO2 supply rates up to 4 L min−1 (i.e., ca. 14.9 g m−2 greenhouse h−1) and sensors for measuring the concentrations of CO2 and H2O. There are four separated belowground troughs per cabin for the root environment that can be operated as individual gas exchange chambers measuring the belowground gas exchange for example root zone respiration. This paper outlines a demonstration of the possibilities and constraints for measuring crop gas exchange in combination with crop model validation for larger crop stands under various conditions and discusses them along with examples.

scholarly journals Measurement of Gas Exchange on Excised Grapevine Leaves Does Not Differ from In Situ Leaves, and Potentially Shortens Sampling Time

2021 ◽  
Vol 11 (8) ◽  
pp. 3644
Author(s):  
Suraj Kar ◽  
Thayne Montague ◽  
Antonio Villanueva-Morales ◽  
Edward Hellman
Keyword(s):  
Gas Exchange ◽  
Time Window ◽  
Leaf Gas Exchange ◽  
Growth Yield ◽  
Abiotic Stress Response ◽  
Gas Exchange Parameters ◽  
Minute Post ◽  
Exchange Measurement ◽  
Similar Accuracy

Use of leaf gas exchange measurement enhances the characterization of growth, yield, physiology, and abiotic stress response in grapevines. Accuracy of a crop response model depends upon sample size, which is often limited due to the prolonged time needed to complete gas exchange measurement using currently available infra-red gas analyzer systems. In this experiment, we measured mid-day gas exchange of excised and in situ leaves from field grown wine grape (Vitis vinifera) cultivars. Depending upon cultivar, we found measuring gas exchange on excised leaves under a limited time window post excision gives similar accuracy in measurement of gas exchange parameters as in situ leaves. A measurement within a minute post leaf excision can give between 96.4 and 99.5% accuracy compared to pre-excision values. When compared to previous field data, we found the leaf excision technique reduced time between consecutive gas exchange measurements by about a third compared to in situ leaves (57.52 ± 0.39 s and 86.96 ± 0.41 s, for excised and in situ, respectively). Therefore, leaf excision may allow a 50% increase in experimental sampling size. This technique could solve the challenge of insufficient sample numbers, often reported by researchers worldwide while studying grapevine leaf gas exchange using portable gas exchange systems under field conditions.

scholarly journals Impact of CVVHD on pulmonary gas exchange measurement

Critical Care ◽  
10.1186/cc66 ◽  
1997 ◽  
Vol 1 (Suppl 1) ◽  
pp. P069 ◽  
Author(s):  
V Srámek ◽  
R Rokyta ◽  
I Novák ◽  
M Matejovic ◽  
J Ruzicka ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Pulmonary Gas Exchange ◽  
Exchange Measurement

scholarly journals Evaluation of Errors in Expiratory Flow Method of Breath-by-breath Gas Exchange Measurement

1984 ◽  
Vol 3 (4) ◽  
pp. 283-289
Author(s):  
Shunsaku KOGA ◽  
Masaki SHIMOTSU ◽  
Yoshihito SHlNOHARA ◽  
Tsuneo TAKAHASHI ◽  
Haruo IKEGAMI
Keyword(s):  
Gas Exchange ◽  
Flow Method ◽  
Exchange Measurement ◽  
Expiratory Flow

A487 BREATH BY BREATH GAS EXCHANGE MEASUREMENT DURING GENERAL ANESTHESIA

1990 ◽  
Vol 73 (3A) ◽  
pp. NA-NA
Author(s):  
P. C.W. Beatty ◽  
M. J. Beech ◽  
T. E.J. Healy
Keyword(s):  
Gas Exchange ◽  
General Anesthesia ◽  
Exchange Measurement

scholarly journals The impact of gas exchange measurement during exercise in pulmonary sarcoidosis

2011 ◽  
Vol 105 (1) ◽  
pp. 122-129 ◽  
Author(s):  
Florian Kollert ◽  
Barbara Geck ◽  
Rolf Suchy ◽  
Rudolf A. Jörres ◽  
Michael Arzt ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Pulmonary Sarcoidosis ◽  
Exchange Measurement ◽  
The Impact

Method of Pulmonary and Membrane Lung Gas Exchange Measurement during Extracorporeal Membrane Oxygenation

1986 ◽  
Vol 32 (1) ◽  
pp. 525-529
Author(s):  
ROBERT E. CILLEY ◽  
JOHN R. WESLEY ◽  
JOSEPH B. ZWISCHENBERGER ◽  
JOHN M. TOOMASIAN ◽  
ROBERT H. BARTIETT
Keyword(s):  
Gas Exchange ◽  
Extracorporeal Membrane Oxygenation ◽  
Membrane Lung ◽  
Membrane Oxygenation ◽  
Exchange Measurement
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