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Artykuły w czasopismach na temat „Volumetric water content”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 24 lipca 2025

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1

Baker, T. H. W., and L. E. Goodrich. "Measurement of soil water content using the combined time-domain reflectometry – thermal conductivity probe." Canadian Geotechnical Journal 24, no. 1 (1987): 160–63. http://dx.doi.org/10.1139/t87-016.

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A two-pronged metal probe measures the thermal conductivity and apparent dielectric constant of soils in the laboratory and in the field. One prong acts as a transient line heat source probe in measuring thermal conductivity. The apparent dielectric constant of the soil is determined by the time-domain reflectometry (TDR) technique, using both prongs as a parallel transmission line. Volumetric water content is determined from the apparent dielectric constant, making use of an empirical relation valid for most soils. For volumetric water contents above about 8%, the apparent dielectric constant

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2

Hussein, H. Karim* Hasan H. Joni Sabah S. Mahood. "ASSESSMENT OF WATER CONTENT FOR SUB- PAVEMENT LAYERS." Global Journal of Engineering Science and Research Management 4, no. 10 (2017): 138–51. https://doi.org/10.5281/zenodo.1034503.

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Ground penetrating radar (GPR) (500 and 800 MHz) was applied for simulation model constructed in Al-Baladiyat district, Baghdad-Iraq. The obtained data results demonstrated the strongly correlation of electromagnetic (relative permittivity of sub-asphalt layers acquired from GPR) with soil water content. Two-way time, velocity of electromagnetic waves traveled through four section layers of simulation model and their relative permittivity as well as the volumetric water content have been calculated. Two formulas have been derived from GPR data to find a relation between volumetric water conten

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3

Robichaud, P. R., D. S. Gasvoda, R. D. Hungerford, J. Bilskie, L. E. Ashmun, and J. Reardon. "Measuring duff moisture content in the field using a portable meter sensitive to dielectric permittivity." International Journal of Wildland Fire 13, no. 3 (2004): 343. http://dx.doi.org/10.1071/wf03072.

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Duff water content is an important consideration for fire managers when determining favourable timing for prescribed fire ignition. The duff consumption during burning depends largely on the duff water content at the time of ignition. A portable duff moisture meter was developed for real-time water content measurements of non-homogenous material such as forest duff. Using circuitry developed from time and frequency domain reflectometry (TDR and FDR) technologies, this sensor measures a change in frequency that is responsive to the dielectric permittivity of the duff material placed in a sample

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4

Zhang, Junhui, Feng Li, Ling Zeng, Junhui Peng, Le Ding, and Liang He. "Moisture Migration and Control of New Embankment for Reconstruction and Expansion Project in Southern China." Advances in Civil Engineering 2020 (July 21, 2020): 1–14. http://dx.doi.org/10.1155/2020/7230537.

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In hot and humid regions of southern China, the volumetric moisture content of the embankment after opening to traffic for a period of time reaches a stable state, and it is higher than the design value. When it was widened, the humidity gradient and exchange were formed due to the difference in moisture content between the existing and new embankment. To reveal the moisture migration of the existing and new embankment and control the rise of volumetric moisture content in new embankment, six frequency domain reflectometry sensors were installed in existing and new embankment to monitor the vo

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5

Martin, Chris A., and Dewayne L. Ingram. "RELATIONSHIPS OF IRRIGATION AND MEDIUM COMPOSITION TO TEMPERATURE DYNAMICS IN CONTAINER MEDIA." HortScience 25, no. 8 (1990): 849e—849. http://dx.doi.org/10.21273/hortsci.25.8.849e.

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Thermal properties of pine bark: sand container media as a function of volumetric water content and effectiveness of irrigation as a tool for modulating high temperatures in container media were studied. Volumetric water and sand content interacted to affect container medium thermal diffusivity. Adding sand to a pine bark container medium decreased thermal diffusivity if volumetric water content was less than 10 percent and increased thermal diffusivity if volumetric water content was between 10 and 70 percent. Thermal diffusivity was greatest for a 3 pine bark : 2 sand container medium if vol

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6

Monje, O., G. D. Goins, H. G. Levine, and G. W. Stutte. "295 Controlling Crop Growth Media Moisture with Sensors." HortScience 35, no. 3 (2000): 442D—442. http://dx.doi.org/10.21273/hortsci.35.3.442d.

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Tight control of growth media moisture content is needed when plant growth systems employ shallow root zones or for cultivating fast-growing plants (i.e., crops). Poor control of moisture can affect both growth rate and plant quality by either excessive watering (waterlogging) or drought events. We evaluated the performance of two types of moisture sensors: tensiometers and heat-pulse moisture sensors. The output from each sensor type was evaluated as a function of volumetric moisture content in 1 to 2 mm Turface. The tensiometers were more sensitive between 30% and 60% volumetric moisture con

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7

Zhou, Wan-Huan, Ankit Garg, and Akhil Garg. "Study of the volumetric water content based on density, suction and initial water content." Measurement 94 (December 2016): 531–37. http://dx.doi.org/10.1016/j.measurement.2016.08.034.

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8

Sun, Z. J., G. D. Young, R. A. McFarlane, and B. M. Chambers. "The effect of soil electrical conductivity on moisture determination using time-domain reflectometry in sandy soil." Canadian Journal of Soil Science 80, no. 1 (2000): 13–22. http://dx.doi.org/10.4141/s98-089.

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A series of laboratory experiments was conducted, in order to systematically explore the effect of soil electrical conductivity on soil moisture determination using time domain reflectometry (TDR). A Moisture Point MP-917 soil moisture instrument (E.S.I. Environmental Sensors Inc., Victoria, BC, Canada) was used to measure propagation time (time delay) of a step function along a probe imbedded in fine sand with different moisture and salinity. The volumetric soil water content was independently determined using a balance. With the help of the diode-switching technique, MP-917 could detect the

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9

Steinberg, Susan L., Gerard J. Kluitenberg, and Soheni Tanzeema. "Roots Affect the Accuracy of Dual-probe Heat-pulse Method for Measuring Water Content in Plant Growth Media." HortScience 41, no. 4 (2006): 970E—971. http://dx.doi.org/10.21273/hortsci.41.4.970e.

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Little attention has been paid to how the presence of roots influences water content measurements obtained with water content sensors. This issue is especially important if sensors are deployed in densely rooted soil or growth media. This work addresses the impact of roots on water content measurements obtained with dual-probe heat-pulse (DPHP) sensors. In the DPHP method, the maximum temperature rise in response to heating (Tmax) is used to calculate volumetric heat capacity, which in turn is used to calculate volumetric water content. The accuracy of DPHP sensors was evaluated in unrooted an

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10

Amadou.Kane1, Ahmed Tidiane Matar Ndiaye2 Issa. Samb1* Seydina Cheikhou Omar Ly2 and Mohamed Lamine Gaye3. "STUDY OF THE QUALITY OF DIESEL OIL FROM DAKAR STATIONS: DETERMINATION OF THE SULFUR CONTENT, WATER CONTENT AND VOLUMETRIC MASS." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 12, no. 4 (2023): 1–12. https://doi.org/10.5281/zenodo.7810538.

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At a time when environmental sciences and the concept of sustainable development are becoming important references in our societies, it appears necessary to have the means to fight against pollution. The pollution of hydrocarbons by sulphur represents an important risk of public health because of the various pathologies which can generate this element. In the framework of this study, we are interested in the study of the quality of diesel in Senegal by verifying the contents of sulfur and water as well as the volumetric mass.   The determination of the sulfur content is done with the EPSI

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11

Pepin, Steeve, André P. Plamondon, and Jean Stein. "Peat water content measurement using time domain reflectometry." Canadian Journal of Forest Research 22, no. 4 (1992): 534–40. http://dx.doi.org/10.1139/x92-070.

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The calibration of time domain reflectometry, previously established for an organic soil of 0.422 Mg•m−3 bulk density, was established for peat blocks with bulk densities ranging from 0.06 to 0.25 Mg•m−3. An empirical relationship between the volumetric water content and the measured apparent dielectric constant was established in the laboratory. This relationship can be used to estimate volumetric water content between 0.21 and 0.95 cm3•cm−3 with a standard deviation of 0.03 cm3•cm−3. The large variations observed during the calibration were mainly attributed to the size and heterogeneousness

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12

Guenette, Kris, and Guillermo Hernandez-Ramirez. "Can Faba Bean Physiological Responses Stem from Contrasting Traffic Management Regimes?" Agronomy 8, no. 10 (2018): 200. http://dx.doi.org/10.3390/agronomy8100200.

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Our study examined how faba beans (Vicia faba L.) grown in soil conditions that simulate common traffic management regimes and water availabilities displayed alterations to their physiological state. Physiological changes were tracked through plant and sensor-based measurements, such as evapotranspiration, water use efficiency, aboveground biomass, stomatal conductance, and normalized difference vegetation index. A greenhouse experiment comprised of faba beans were sown into pots of two different soil types that were separated by treatments of dry bulk density and volumetric water content. The

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13

Hong, Won-Taek, Jung-Doung Yu, Sang Yeob Kim, and Jong-Sub Lee. "Dynamic Cone Penetrometer Incorporated with Time Domain Reflectometry (TDR) Sensors for the Evaluation of Water Contents in Sandy Soils." Sensors 19, no. 18 (2019): 3841. http://dx.doi.org/10.3390/s19183841.

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Ground moisture content and strength properties are the most important factors for a proper assessment of ground stability. This study developed a dynamic cone penetrometer incorporated with time domain reflectometry (TDR) sensors (TDCP). The TDCP is composed of an anvil, a driving rod, and a TDCP probe. Three wave guides and a K-type thermocouple are installed on the TDCP probe. For utilization of TDCP, relationships between relative permittivities measured by TDCP and those measured by standard TDR probe, temperature, and volumetric water content of the soils were investigated. In addition,

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14

Ashour, Mohammed F. Y., Aiping Tang, and Yang Yingzi. "Investigation of the Mechanical Properties of Biopolymer-Treated Soil and Its Influencing Factors." Journal of Testing and Evaluation 53, no. 3 (2025): 617–37. https://doi.org/10.1520/jte20240300.

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ABSTRACT This study explores the mechanical properties of casein-treated and agar-treated sand, considering biopolymer content, dehydration time, immersion periods, relative densities, porosity ratios, and porosity/volumetric biopolymer contents. Adding casein was found to improve the water resistance of agar-treated sand. Results reveal that 4 % and 5 % casein-treated sand exhibit the highest water resistance after a week of submersion, with wet strength of 0.359 MPa and 0.493 MPa, respectively. Increased relative density and biopolymer content correlate with higher unconfined compressive str

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15

Zhang, Dong, Meng Wang, Xiao-kang Li, and A.-qiang Liu. "Experimental Study on the Effect of Initial Water Content and Temperature Gradient on Soil Column Segregation Frost Heave." Geofluids 2022 (October 8, 2022): 1–14. http://dx.doi.org/10.1155/2022/4679547.

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A series of freezing experiments were carried out on the Qinghai silty clay using a one-dimensional soil column particle image velocimetry (PIV) system. The effects of the initial water content and temperature gradient on the frost heave of the soil column were analysed. The experimental results show that the total volumetric water content after the Qinghai silty clay freezing is much greater than the initial water content before freezing, and the total volumetric water content at the segregated layer reaches the maximum value. The average unfrozen water content firstly increases sharply with

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16

Juan, David Montoya-Dominguez, Fabián Gar cía-Aristizábal Edwin, and Alberto Vega-Posada Carlos. "One-dimensional experimental study of rainfall infiltration into unsaturated soil." Revista Facultad de Ingeniería -redin-, no. 82 (March 16, 2017): 74–81. https://doi.org/10.17533/udea.redin.n82a10.

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This paper presents experimental results obtained from tests on unsaturated soil in one-dimensional columns simulating a rainfall infiltration process. Six columns composed of compacted Silty Sand were prepared to study the effects of the initial water content and rainfall intensity on the downward infiltration process. The advance of the water front was monitored using sensors to measure pore water pressure and volumetric water content installed at different locations along the height of the Silty Sand column. The test results show that the lag time, defined as the time difference from the be

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17

Zhang, Shibin, Tielin Han, Yani Lu, Chengzhi Huang, and Peng Zhao. "Experimental study of water migration characteristics in compacted loess subjected to rainfall infiltration." PLOS ONE 17, no. 9 (2022): e0274265. http://dx.doi.org/10.1371/journal.pone.0274265.

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In order to study the effect of the rainfall infiltration on water migration in compacted loess, a model device was developed for testing water migration in the soil under rainfall conditions. In this study, the volumetric water content and resistivity of soil were introduced into the model test device. This model test device was applied to the study of water migration characteristics in compacted loess under different rainfall conditions. The results show that the resistivity decreases with the increase of the volumetric water content at the same depth of the loess column. In this way, the ch

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18

Harnas, F. R., H. Rahardjo, E. C. Leong, and J. Y. Wang. "Experimental study on dual capillary barrier using recycled asphalt pavement materials." Canadian Geotechnical Journal 51, no. 10 (2014): 1165–77. http://dx.doi.org/10.1139/cgj-2013-0432.

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The performance of a capillary barrier cover as a cover system is affected by the ability of the capillary barrier to store water. To increase the water storage of a capillary barrier cover, the dual capillary barrier (DCB) concept is proposed. The objective of this paper is to investigate the water storage of the proposed DCB as compared to the storage of a traditional single capillary barrier (SCB). The investigation is conducted using two one-dimensional infiltration column tests under different rainfall conditions. The results show that a DCB stores more water as compared to SCB. The resul

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19

Dias, Ana Sofia, Abhijith Kamath, Marianna Pirone, and Gianfranco Urciuoli. "Water retention and shrinkage curves of weathered pyroclastic soil." E3S Web of Conferences 195 (2020): 03003. http://dx.doi.org/10.1051/e3sconf/202019503003.

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The modelling of the triggering mechanism of rainfall-induced landslides in slopes covered by pyroclastic soil (as the area surrounding Mount Vesuvius in Campania, Italy) requires the hydraulic characterization of soil in unsaturated conditions in order to analyse the slope response to rainfalls. In previous studies carried out on Campanian pyroclastic soils, the volumetric soil changes due to suction changes have been disregarded, being them negligible in soils characterized by low plasticity and low clay contents. However, a more accurate determination of the water retention curve (WRC) in t

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20

Villoro, Antonio, Borja Latorre, Jaume Tormo, et al. "A TDR wireless device for volumetric water content sensing." Computers and Electronics in Agriculture 181 (February 2021): 105939. http://dx.doi.org/10.1016/j.compag.2020.105939.

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21

Bardanis, Michael. "Volumetric water content measurement probes in earth-dam construction." E3S Web of Conferences 9 (2016): 16004. http://dx.doi.org/10.1051/e3sconf/20160916004.

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22

Horie, T. "Estimation of the volumetric water content in chrysanthemum tissues." Journal of Radioanalytical and Nuclear Chemistry 264, no. 2 (2005): 325–28. http://dx.doi.org/10.1007/s10967-005-0715-8.

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23

Burnett, Stephanie E., and Marc W. van Iersel. "Morphology and Irrigation Efficiency of Gaura lindheimeri Grown with Capacitance Sensor-controlled Irrigation." HortScience 43, no. 5 (2008): 1555–60. http://dx.doi.org/10.21273/hortsci.43.5.1555.

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Gaura lindheimeri Engelm. & Gray ‘Siskiyou Pink’ (gaura) and Phlox paniculata L. ‘David’ (garden phlox) were grown for 5 weeks in substrates irrigated at volumetric water contents (Θ) of 0.10, 0.15, 0.20, 0.25, 0.30, 0.35, 0.40, or 0.45 m3·m−3 using a capacitance sensor-controlled irrigation system. Volumetric water contents of the substrate measured by the capacitance sensors controlling irrigation were correlated with measurements with a separate handheld meter (r 2 = 0.83) and with volumetric water content set points throughout the study (r 2 > 0.98). Only 3.8 (at an irrigation set p

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24

Jeffries, Matthew D., and Travis W. Gannon. "Soil Organic Matter Content and Volumetric Water Content Affect Indaziflam–Soil Bioavailability." Weed Science 64, no. 4 (2016): 757–65. http://dx.doi.org/10.1614/ws-d-16-00039.1.

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Indaziflam is a cellulose biosynthesis-inhibiting herbicide for annual weed control in various agricultural systems. Sporadic cases of unacceptable injury to desirable plants have been reported after indaziflam application, which may have been due to conditions favoring increased indaziflam–soil bioavailability. Research was conducted from 2013 to 2015 on a sandy soil to elucidate the effects of soil organic matter content (SOMC) and soil volumetric water content (SVWC) on indaziflam–soil bioavailability. Indaziflam was applied (50 or 100 g ha–1) at fall only, fall plus spring, and spring only

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25

Al Majou, Hassan, Ary Bruand, and Odile Duval. "The use of in situ volumetric water content at field capacity to improve the prediction of soil water retention properties." Canadian Journal of Soil Science 88, no. 4 (2008): 533–41. http://dx.doi.org/10.4141/cjss07065.

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Most pedotransfer functions (PTF) developed over the past three decades to generate water retention characteristics use soil texture, bulk density and organic carbon content as predictors. Despite the high number of PTFs published, most being class- or continuous-PTFs, the accuracy of prediction remains limited. In this study, we compared the performance of different class- and continuous-PTFs developed with a regional database. Results showed that the use of in situ volumetric water content at field capacity as a predictor led to much better estimation of water retention properties compared w

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26

Chen, Cunli, Dengfei Zhang, and Jie Zhang. "Influence of stress and water content on air permeability of intact loess." Canadian Geotechnical Journal 54, no. 9 (2017): 1221–30. http://dx.doi.org/10.1139/cgj-2016-0186.

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Air permeability is one of the key parameters in performing consolidation analysis of unsaturated soil. Few data are available regarding the air permeability for intact loess under different applied stresses. The work reported in this paper evaluated the air permeability at isotropic stress using data obtained from laboratory investigations for intact loess. Air permeability tests were performed on specimens of intact loess at various water contents and isotropic stresses. Stress remarkably affected air permeability as a function of both liquid saturation and volumetric air content. There were

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27

Wang, Wei, Jingjing Liu, and Jing Chen. "Thermo-Hydromechanical Coupling Responses Driven by a Central Heat Source in Unsaturated Soils." Advances in Materials Science and Engineering 2022 (February 4, 2022): 1–12. http://dx.doi.org/10.1155/2022/2867985.

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Based on the thermodynamic and thermoelastic theory, the coupled governing equations of deformation, heat transfer, and moisture migration in unsaturated soils were given. The coupled calculation process was realized by the finite element method. The hydrothermal coupling characteristics of two cases of unsaturated kaolin clay were studied by using a self-developed test device, and the test results were compared with the numerical results. The results showed that when the initial saturation of the soil is high, the volumetric water content of the measured point increases, and then it is in a s

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28

Tang, Yaming, Heping Shu, Qiang Xue, et al. "Field Monitoring-Based and Theoretical Analysis of Baota Mountain Landslide Stability." Advances in Civil Engineering 2021 (March 23, 2021): 1–16. http://dx.doi.org/10.1155/2021/6699917.

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Landslide is one of the most widely distributed surface morphological landscapes, and it can cause a series of major economic and human losses. Field monitoring and limit equilibrium methods were applied to investigate Baota Mountain landslide stability, and soil volumetric water content, different scales of rainfall data, and landslide displacements were monitored using various equipment. The theoretical factor of safety was also calculated for the landslide. Finally, the theoretical results were validated by monitoring data in the field. The results demonstrate that soil volumetric water con

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29

Almeida, Karla Silva Santos Alvares de, Luciano Da Silva Souza, Vital Pedro Da Silva Paz, Maurício Antônio Coelho Filho, and Eduardo Holzapfel Hoces. "Models for moisture estimation in different horizons of yellow argisol using TDR." Semina: Ciências Agrárias 38, no. 4 (2017): 1727. http://dx.doi.org/10.5433/1679-0359.2017v38n4p1727.

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The determination of soil moisture is very important because it is the property with the most influence on the dielectric constant of the medium. Time-domain reflectometry (TDR) is an indirect technique used to estimate the water content of the soil (?) based on its dielectric constant (Ka). Like any other technique, it has advantages and disadvantages. Among the major disadvantages is the need for calibration, which requires consideration of the soil characteristics. This study aimed to perform the calibration of a TDR100 device to estimate the volumetric water content of four horizons of a Y

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30

Zou, C., R. Sands, G. Buchan, and I. Hudson. "Least limiting water range: a potential indicator of physical quality of forest soils." Soil Research 38, no. 5 (2000): 947. http://dx.doi.org/10.1071/sr99108.

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The interactions of the 4 basic soil physical properties—volumetric water content, matric potential, soil strength, and air-filled porosity—were investigated over a range of contrasting textures and for 3 compaction levels of 4 forest soils in New Zealand, using linear and non-linear regression methods. Relationships among these properties depended on texture and bulk density. Soil compaction increased volumetric water contents at field capacity, at wilting point, and at the water contents associated with restraining soil strength values, but decreased the water content when air-filled porosit

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Lu, Xiaochun, Xiao Liu, Bobo Xiong, et al. "Water Distribution Characteristics of Slopes Based on the High-Density Electrical Method." Water 15, no. 5 (2023): 895. http://dx.doi.org/10.3390/w15050895.

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Measuring the water content of slopes is essential because the distribution and migration of water within slopes are important factors of landslide instability. In this study, the relationship between the resistivity, volumetric temperature water content and temperature of landslide soil was modelled. The model was validated by indoor landslide model tests and field tests in Baijiabao to investigate the effect of reservoir water levels on the water content of landslide slopes. Test results showed that, as the reservoir levels rose, the water content of the landslide soil increased. Moreover, a

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32

Sun, Wendell Q., Yongheng Liang, Shangzhi Huang, and Jiarui Fu. "Biopolymer volume change and water clustering function of primed Vigna radiata seeds." Seed Science Research 13, no. 4 (2003): 287–302. http://dx.doi.org/10.1079/ssr2003146.

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Osmotic priming reduces the longevity of Vigna radiata (mung bean) seeds during subsequent dry storage. The present study has investigated the relationship between volumetric changes, modified water sorption properties and the decrease in seed longevity after priming. Volumetric analysis of control embryos revealed two major dehydration-related volumetric contractions in the biopolymer matrix, reflecting structural reorganization in biopolymer matrix during drying. These contractions occurred at hydration from 0.29 to 0.23 g g–1 dw and from 0.18 to 0.11 g g–1 dw, respectively. Volumetric contr

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33

Casanova, Pedro, Paulo C. Corrêa, and Kattia Solís. "Volumetric shrinkage and shape of Conilon coffee fruit (Coffea Canephora)." Journal of Agricultural Studies 2, no. 1 (2014): 73. http://dx.doi.org/10.5296/jas.v2i1.4617.

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The effect of varying the water content was evaluated in shrinkage, dimensional characteristics and shape of the fruits of coffee during drying. Fruits were used Conilon coffee (Coffea canephora), clone 83 of clonal variety EMCAPA 8141. The fruit was hand-picked and selected only the two stages, cherry and unripe. Different batches of coffee were dried in an oven with forced ventilation with air temperature of approximately 60 ± 3 °C until different levels of water content. Fruit size was determined by varying the volume and shape was examined by sphericity and roundness. The shrinkage of the

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Vopravil, Jan, Pavel Formánek, Darina Heřmanovská, Tomáš Khel, and Karel Jacko. "The impact of agricultural land afforestation on soil water content in Central Bohemia." Journal of Forest Science 67, No. 11 (2021): 512–21. http://dx.doi.org/10.17221/108/2021-jfs.

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In the Czech Republic, the afforestation of agricultural land has been supported by providing subsidies from the government and the European Union. Afforestation of less-productive agricultural land provides many benefits including carbon sequestration, soil erosion control, biodiversity, water retention, cooling, social benefits, decreasing noise and light pollution, increasing air quality, wind speed reduction, oxygen production, wood production and non-wood products. In some aspects, it is possible to produce wood of the same quality on former agricultural land compared to permanent forest

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35

Mukhlisin, Muhammad, and Almushfi Saputra. "Performance Evaluation of Volumetric Water Content and Relative Permittivity Models." Scientific World Journal 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/421762.

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In recent years many models have been proposed for measuring soil water content (θ) based on the permittivity (ε) value. Permittivity is one of the properties used to determineθin measurements using the electromagnetic method. This method is widely used due to quite substantial differences in values ofεfor air, soil, and water, as it allows theθvalue to be measured accurately. The performance of six proposed models with one parameter (i.e., permittivity) and five proposed models with two or more parameters (i.e., permittivity, porosity, and dry bulk density of soil) is discussed and evaluated.

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WYSEURE, G. C. L., M. A. MOJID, and M. A. MALIK. "Measurement of volumetric water content by TDR in saline soils." European Journal of Soil Science 48, no. 2 (1997): 347–54. http://dx.doi.org/10.1111/j.1365-2389.1997.tb00555.x.

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Dlamini, Phesheya, and Vincent Chaplot. "On the interpolation of volumetric water content in research catchments." Physics and Chemistry of the Earth, Parts A/B/C 50-52 (2012): 165–74. http://dx.doi.org/10.1016/j.pce.2012.09.008.

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Kaplanvural, İ., E. Pekşen, and K. Özkap. "Volumetric water content estimation of C-30 concrete using GPR." Construction and Building Materials 166 (March 2018): 141–46. http://dx.doi.org/10.1016/j.conbuildmat.2018.01.132.

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Tsai, Yi-Zhih, Kan-Sheng Hsu, Hung-Yu Wu, et al. "Application of Random Forest and ICON Models Combined with Weather Forecasts to Predict Soil Temperature and Water Content in a Greenhouse." Water 12, no. 4 (2020): 1176. http://dx.doi.org/10.3390/w12041176.

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Climate change might potentially cause extreme weather events to become more frequent and intense. It could also enhance water scarcity and reduce food security. More efficient water management techniques are thus required to ensure a stable food supply and quality. Maintaining proper soil water content and soil temperature is necessary for efficient water management in agricultural practices. The usage of water and fertilizers can be significantly improved with a precise water content prediction tool. In this study, we proposed a new framework that combines weather forecast data, numerical mo

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Currey, Christopher J., Nicholas J. Flax, Alexander G. Litvin, and Vincent C. Metz. "Substrate Volumetric Water Content Controls Growth and Development of Containerized Culinary Herbs." Agronomy 9, no. 11 (2019): 667. http://dx.doi.org/10.3390/agronomy9110667.

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There are no chemical plant growth retardants that may be used on containerized culinary herbs intended for consumption. Our objective was to quantify the effect of substrate moisture content on the growth of four commonly produced culinary annual herbs grown in containers in the greenhouse. Seedlings of basil (Ocimum basilicum L.), dill (Anethum graveolens L.), parsley (Petroselinum crispum (Mill.) Fuss), and sage (Salvia officinalis L.) were transplanted into 11.4 cm diameter containers filled with commercial soilless substrate comprising (by vol.) 75% sphagnum peat moss and 25% coarse perli

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Foley, J. L., and E. Harris. "Field calibration of ThetaProbe (ML2x) and ECHO probe (EC-20) soil water sensors in a Black Vertosol." Soil Research 45, no. 3 (2007): 233. http://dx.doi.org/10.1071/sr06156.

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Past studies have shown that soil-specific calibrations are required to attain a higher level of accuracy when measuring soil water content with ThetaProbe and ECHO probe soil water sensors, particularly in swelling clay soils. Both probes were assessed for their capacity to accurately monitor soil water in a deep drainage study on a Black Vertosol. Probes were trialled in situ and calibrated against hand-sampled volumetric measurements. The generic calibrations given by the manufacturers resulted in significant errors in water content estimates for both probes. Using the generic calibration,

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Niu, Lisi, Aijun Zhang, Jiamin Zhao, Wenyuan Ren, Yuguo Wang, and Zhichao Liang. "Study on Soil-Water Characteristics of Expansive Soil under the Dry-Wet Cycle and Freeze-Thaw Cycle considering Volumetric Strain." Advances in Civil Engineering 2021 (January 29, 2021): 1–13. http://dx.doi.org/10.1155/2021/6622370.

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This paper targets the expansive soils in Heilongjiang and Ankang to explore the influence of initial dry density, dry-wet cycle, and freeze-thaw cycle on the soil-water characteristics. The centrifuge method was used to obtain the soil-water characteristic curves (SWCCs) with different conditions. The volumetric strain of SWCC was modified based on the shrinkage test, and the corresponding fitting equations considering different factors were established. The results show that the volumetric water content is modified to consider the volume shrinkage effect of expansive soil, and the modificati

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Avzalshoev, Zafar, and Taro Uchimura. "An Experimental Approach to Investigating Quasi-Saturation Using Darcy’s Law." Sustainability 15, no. 13 (2023): 10459. http://dx.doi.org/10.3390/su151310459.

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Recent trends in abnormal weather patterns leading to sudden and localized heavy rainfall have resulted in an increased frequency of surface landslides. As a result, there is a pressing need for improved prediction and early warning systems. This research focuses on understanding soil behavior under quasi-saturation and elucidating its relationship with pore water pressure and the hydraulic head. In the present study, a mathematical model is formulated to characterize the complex dynamics of quasi-saturation based on established principles. The model demonstrates the correlation between volume

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Pasban, Ali Asghar, and Behrouz Nonahal. "The Investigation of precision of analytical methods for determination of salt content in Iranian crude oils." Analytical Methods in Environmental Chemistry Journal 1, no. 01 (2018): 23–28. http://dx.doi.org/10.24200/amecj.v1.i01.33.

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In crude oil analysis, the determination of salt content is one of the most important parameters especially for refining and exporting industries. In this study, extraction followed by volumetric titration and electrometric procedure are performed for determining salt content for several Iranian crude oils. Also, the effects of disturbing agents such as increasing associated water for determining salt in crude oil were investigated for both methods. The results show when water content in crude oil is less than 0.05 weight percent, both methods are equally accurate for determining salt content,

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Li, Weijiao, Yunpeng Wang, Jingxue Yang, and Yujiao Deng. "Time-Lag Effect of Vegetation Response to Volumetric Soil Water Content: A Case Study of Guangdong Province, Southern China." Remote Sensing 14, no. 6 (2022): 1301. http://dx.doi.org/10.3390/rs14061301.

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The content of soil water affects the physiological activities of vegetation, and the type of vegetation also affects the soil water balance. It is of great significance to study the response of vegetation to soil moisture change, which is helpful for understanding the vulnerability of vegetation for regional and environmental protections. The response of vegetation to soil moisture in Guangdong Province from mid-October 2015 to the end of March 2017 was studied by using cloudy region drought index (CRDI) as the drought index and volumetric soil water content (VSWC) as the soil moisture index

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Paraskevas, C., P. Georgiou, A. Ilias, A. Panoras, and C. Babajimopoulos. "Calibration equations for two capacitance water content probes." International Agrophysics 26, no. 3 (2012): 285–93. http://dx.doi.org/10.2478/v10247-012-0041-7.

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Calibration equations for two capacitance water content probesThis paper presents the calibration equations of two capacitance probes for monitoring the soil water content in a lysimeter field. Capacitance probes provide readings at desired depths and time intervals. The calibration equations are derived by regression analysis between measurements of scaled frequency and volumetric soil water content. The calibration equations are compared with the manufacturer default equations to estimate the irrigation water depth. The accuracy of capacitance probes in monitoring soil water content increase

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Lan, Xiang, Yunmin Wang, Xiaojun Wang, and Jiabo Geng. "Study on the Destabilisation Pattern and Volumetric Water Content Evolution Characteristics of Underground Mining Rock Formations Under Heavy Rainfall Conditions." Water 17, no. 2 (2025): 136. https://doi.org/10.3390/w17020136.

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In order to study the stability of rock layers and the change in volumetric water content at different stages of mining under an environment of heavy rainfall, a self-developed large-scale open-pit-to-underground-mining similar physical model was used, and the intensity of continuous rainfall was set at 40 mm/h. The results of this study show that fissures accelerated the instability of rock strata, and when spreading to different rock strata, they were prone to form subsidence cracks and produce collapse zones. The volumetric water content is closely related to the stability of the rock forma

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Xu, Yunlei, Haiyan Yang, Jianhua Yue, et al. "Freezing Behavior of Clayey Sand and Spatiotemporal Evolution of Seasonally Frozen Soil Distribution in the Qinghai–Tibet Plateau." Applied Sciences 15, no. 13 (2025): 7498. https://doi.org/10.3390/app15137498.

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Seasonally frozen soils are widely distributed across the Qinghai–Tibet Plateau and play a crucial role in regional hydrological processes, ecosystem stability, and infrastructure development. In this study, a custom-designed freeze–thaw apparatus was employed to investigate the freezing behavior of clayey sand with varying initial volumetric water contents. The relationship between electrical resistivity and unfrozen water content was examined through laboratory tests, while six-month resistivity monitoring tests were conducted in a representative frozen soil region of the plateau. The result

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Thiago de Souza, Carnavale, Campos Tácio Mauro Pereira de, and Lopes Haimon Diniz Alves. "Evaluation of installation procedures of volumetric water content and matric potential probes: fundamentals for obtaining field and laboratory accordance." MATEC Web of Conferences 337 (2021): 01009. http://dx.doi.org/10.1051/matecconf/202133701009.

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The current paper aims to analyze the influence of installation procedures when it comes to the accordance of the Soil Water Retention Curve and field monitoring data. The method comprises testing three different installation procedures: with driving the rod into the soil; with the application of mud inside the auger hole; and with a hardened steel gauge. Further, is evaluated the influence of the variation of Bulk density on volumetric water content values by using the Proctor and a double ring hydraulic equipment. To analyze the soil-rod coupling, a microtomography imaging routine was perfor

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Nimmol, Chatchai, and Anucha Hirunwat. "Improving the Performance and Energy Efficiency of Pneumatic Dryer for Okara." Applied Engineering in Agriculture 33, no. 5 (2017): 729–36. http://dx.doi.org/10.13031/aea.12395.

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Abstract. A corrugated-pipe drying column and a multipass drying concept (one-pass and two-pass drying) were proposed in this study to improve the performance and energy efficiency of a conventional pneumatic dryer for okara. The performance (in terms of volumetric water evaporation rate and volumetric heat transfer coefficient) and the energy efficiency of the dryer were evaluated. With the use of the corrugated-pipe drying column, the moisture reduction of the okara, the volumetric water evaporation rate, and the volumetric heat transfer coefficient were enhanced. The specific energy consump

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