Results 1 to 10 of about 2,968 (214)
A modified Bowen ratio method to determine sensible and latent heat fluxes
Meteorologische Zeitschrift, 2001 The sensible heat flux (H) and the latent heat flux (λE) were measured above a grassland during June, 1997 (LINEX-97/1 Experiment), using the eddy covariance method (EC) and the Bowen ratio/Energy balance method (BREB).
Heping Liu, Thomas Foken
doaj +2 more sources
Miniature External Sapflow Gauges and the Heat Ratio Method for Quantifying Plant Water Loss
Bio-Protocol, 2017 External sapflow sensors are a useful tool in plant ecology and physiology for monitoring water movement within small stems or other small plant organs.
Robert Skelton
doaj +4 more sources
Estimation of transpiration in oil palm (Elaeis guineensis Jacq.) with the heat ratio method
Agronomía Colombiana, 2016 Sap flow sensors were installed on the leaf petioles of 5-year-old oil palms (Elaeis guineensis Jacq.) to measure the xylem water flow for 12 days based on the heat ratio method (HRM).
Cristihian Jarri Bayona-Rodríguez +1 more
doaj +4 more sources
Validation of PCHE-Type CO2–CO2 Recuperative Heat Exchanger Modeling Using Conductance Ratio Method
EnergiesPrinted-circuit heat exchangers (PCHEs) are compact exchangers with exceptional heat-transfer properties that are important for supercritical CO2 technology. Recalculating the heat transfer under off-design conditions is a common task.
Viktoria Carmen Illyés +3 more
doaj +2 more sources
A Bowen ratio-informed method for coordinating the estimates of air–sea turbulent heat fluxes
Environmental Research LettersAccurate quantification of turbulent heat fluxes [THF, comprising sensible heat flux (SHF) and latent heat flux (LHF)] and Bowen ratio ( β , ratio of SHF and LHF) is essential for understanding the air–sea interaction.
Yizhe Wang +5 more
doaj +2 more sources
Specific heat ratio effects of compressible Rayleigh—Taylor instability studied by discrete Boltzmann method [PDF]
Frontiers of Physics, 2021 Rayleigh-Taylor (RT) instability widely exists in nature and engineering fields. How to better understand the physical mechanism of RT instability is of great theoretical significance and practical value. At present, abundant results of RT instability have been obtained by traditional macroscopic methods.
Chen, Lu +3 more
openaire +2 more sources
Maximum heat ratio: bi-directional method for fast and slow sap flow measurements [PDF]
Plant and Soil, 2021 AbstractBackgroundAs sap flow research expands, new challenges such as fast sap flows or flows co-occurring with freeze/thaw cycles appear, which are not easily addressed with existing methods. In order to address these new challenges, sap flow methods capable of measuring bidirectional, high and slow sap flux densities (Fd, cm3cm−2 h−1), thermal ...
Jose Gutierrez Lopez +4 more
openaire +2 more sources
Agronomy, 2021 The measurement of sap movement in xylem sapwood tissue using heat pulse velocity sap flow instruments has been commonly used to estimate plant transpiration. In this study, sap flow sensors (SFM1) based on the heat ratio method (HRM) were used to assess
Xi Sun +3 more
doaj +1 more source
Physical and Morphological Changes in Heat-Treated and Densified Fast-Growing Timber Material [PDF]
E3S Web of Conferences, 2023 Heat treatment is a modification method that can alter the polymeric components of wood (cellulose, hemicellulose and lignin). Densification technology has emerged as one of the promising technologies capable of improving the properties of low-density ...
Liew Kang Chiang +2 more
doaj +1 more source
IEEE Access, 2022 Optimum filling ratio as an important parameter has a great effect on the heat performance of heat pipes. Especially for micro heat pipes with only hundreds of microliters of internal volume, their optimum filling ratios are hard to be obtained without ...
Xiangrong Wang +4 more
doaj +1 more source