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Artykuły w czasopismach na temat „Hydrothermal time models”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 19 lutego 2022

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1

Onofri, Andrea, Paolo Benincasa, Mohsen B. Mesgaran, and Christian Ritz. "Hydrothermal-time-to-event models for seed germination." European Journal of Agronomy 101 (November 2018): 129–39. http://dx.doi.org/10.1016/j.eja.2018.08.011.

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Bloomberg, M., J. R. Sedcole, E. G. Mason, and G. Buchan. "Hydrothermal time germination models for radiata pine (Pinus radiataD. Don)." Seed Science Research 19, no. 3 (September 2009): 171–82. http://dx.doi.org/10.1017/s0960258509990031.

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AbstractThe objective of this study was to fit a hydrothermal germination model to germination data for a seedlot of radiata pine (Pinus radiataD. Don). Seeds were incubated for 50 d at constant temperatures and water potentials (T = 12.5–32.5°C, Ψ = 0 to − 1.2 MPa). Most seeds completed germination within 50 d, but for low Ψ and/or non-optimal temperatures (T < 17.5°C,T>25°C) many seeds did not complete germination. In general, germination data conformed to the hydrothermal model. Departures from the model were encountered for slow-germinating seeds at suboptimal temperatures (T ≤ 20°C)
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Graziani, Anthony, and Scott J. Steinmaus. "Hydrothermal and thermal time models for the invasive grass, Arundo donax." Aquatic Botany 90, no. 1 (January 2009): 78–84. http://dx.doi.org/10.1016/j.aquabot.2008.06.003.

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Mesgaran, M. B., H. R. Mashhadi, H. Alizadeh, J. Hunt, K. R. Young, and R. D. Cousens. "Importance of distribution function selection for hydrothermal time models of seed germination." Weed Research 53, no. 2 (January 25, 2013): 89–101. http://dx.doi.org/10.1111/wre.12008.

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Hawkins, K. K., P. S. Allen, and S. E. Meyer. "Secondary dormancy induction and release inBromus tectorumseeds: the role of temperature, water potential and hydrothermal time." Seed Science Research 27, no. 1 (January 10, 2017): 12–25. http://dx.doi.org/10.1017/s0960258516000258.

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AbstractSeeds of the winter annualBromus tectorumlose primary dormancy in summer and are poised to germinate rapidly in the autumn. If rainfall is inadequate, seeds remain ungerminated and may enter secondary dormancy under winter conditions. We quantified conditions under which seeds enter secondary dormancy in the laboratory and field and also examined whether contrastingB. tectorumgenotypes responded differently to dormancy induction cues. The study also extends previous hydrothermal time models for primary dormancy loss and germination timing inB. tectorumby using similar models to account
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Meyer, Susan E., and Phil S. Allen. "Predicting seed dormancy loss and germination timing for Bromus tectorum in a semi-arid environment using hydrothermal time models." Seed Science Research 19, no. 4 (December 2009): 225–39. http://dx.doi.org/10.1017/s0960258509990122.

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AbstractA principal goal of seed germination modelling for wild species is to predict germination timing under fluctuating field conditions. We coupled our previously developed hydrothermal time, thermal and hydrothermal afterripening time, and hydration–dehydration models for dormancy loss and germination with field seed zone temperature and water potential measurements from early summer through autumn to develop predictions of germination timing for Bromus tectorum at a semi-arid site in north-central Utah, USA. Model predictions were tested with a validation dataset based on concomitant see
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Bakhshandeh, E., and M. Jamali. "Halothermal and hydrothermal time models describe germination responses of canola seeds to ageing." Plant Biology 23, no. 4 (April 23, 2021): 621–29. http://dx.doi.org/10.1111/plb.13251.

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Goulart, Francisco A. P., Renan R. Zandoná, Maicon F. Schmitz, André R. Ulguim, André Andres, and Dirceu Agostinetto. "Modeling the Emergence of Echinochloa sp. in Flooded Rice Systems." Agronomy 10, no. 11 (November 12, 2020): 1756. http://dx.doi.org/10.3390/agronomy10111756.

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Barnyard grass (Echinochloa sp.) is one of the main rice weeds. Knowledge of its emergence can support management measures. The present study models barnyard grass emergence at different flooded rice sowing periods. Furthermore, the effectiveness of the hydrothermal time model in estimating barnyard grass emergence is analyzed. Field emergence was monitored three times a week during two sowing times (October and November) and two growing seasons (2017/18 and 2018/19), in rice sown and unsown areas. Data were converted to cumulative emergence based on total seedlings. Soil temperature and moist
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9

Bloomberg, M., and M. S. Watt. "Base water potential for germination of radiata pine and buddleia seeds adjusts in response to time, seed-bed water potential and supra-optimal temperatures." NZGA: Research and Practice Series 14 (January 1, 2010): 113–18. http://dx.doi.org/10.33584/rps.14.2008.3177.

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Hydrothermal germination models are mathematical models which predict germination time of seeds for a specified seed-bed temperature (T) and water potential (Ψ). In this paper, the commonly observed decline in seed germination at supra-optimal temperatures is investigated by fitting a hydrothermal time model to germination data from two unrelated plant species (Buddleia davidii and Pinus radiata). For both these species, reduced germination rates and germination percentages above optimum temperatures (20°C and 25°C for P. radiata and B. davidii, respectively) were successfully modelled by a
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10

Grose, C. J., and J. C. Afonso. "The hydrothermal power of oceanic lithosphere." Solid Earth Discussions 7, no. 1 (March 18, 2015): 1163–207. http://dx.doi.org/10.5194/sed-7-1163-2015.

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Abstract. We have estimated the power of ventilated hydrothermal heat transport, and its spatial distribution, using a set of recently developed plate models which highlight the effects of hydrothermal circulation and thermal insulation by oceanic crust. Testing lithospheric cooling models with these two effects, we estimate that global advective heat transport is about 6.6 TW, significantly lower than previous estimates, and that the fraction of that extracted by vigorous circulation on the ridge axes (<1 Ma) is about 50% of the total, significantly higher than previous estimates. This low
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11

Barth, Connor W., Susan E. Meyer, Julie Beckstead, and Phil S. Allen. "Hydrothermal time models for conidial germination and mycelial growth of the seed pathogen Pyrenophora semeniperda." Fungal Biology 119, no. 8 (August 2015): 720–30. http://dx.doi.org/10.1016/j.funbio.2015.04.004.

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12

Lühmann, Taina, and Benjamin Wirth. "Sewage Sludge Valorization via Hydrothermal Carbonization: Optimizing Dewaterability and Phosphorus Release." Energies 13, no. 17 (August 26, 2020): 4417. http://dx.doi.org/10.3390/en13174417.

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As the use of sewage sludge as a fertilizer in agriculture is increasingly restricted in the European Union, other ways to utilize this waste stream need to be developed. Sewage sludge is an ideal input material for the process of hydrothermal carbonization, as it can convert wet biomass into a solid energy carrier with increased mechanical dewaterability. Digested sewage sludge was hydrothermally carbonized at 160–200 °C for 30–60 min with initial pH levels of 1.93–8.08 to determine optimal reaction conditions for enhanced dewaterability and phosphorus release into the liquid phase. Design of
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13

Reinhardt Piskackova, Theresa, S. Chris Reberg-Horton, Robert J. Richardson, Katie M. Jennings, and Ramon G. Leon. "Incorporating environmental factors to describe wild radish (Raphanus raphanistrum) seedling emergence and plant phenology." Weed Science 68, no. 6 (August 26, 2020): 627–38. http://dx.doi.org/10.1017/wsc.2020.64.

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AbstractWild radish (Raphanus raphanistrum L.) is a weed found globally in agricultural systems. The facultative winter annual nature of this plant and high genetic variability makes modeling its growth and phenology difficult. In the present study, R. raphanistrum natural seedbanks exhibited a biphasic pattern of emergence, with emergence peaks occurring in both fall and spring. Traditional sigmoidal models were inadequate to fit this pattern, regardless of the predictive environmental variable, and a corresponding biphasic model (sigmoidal + Weibull) was used to describe emergence based on t
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14

Alvarado, Veria, and Kent J. Bradford. "Hydrothermal time analysis of seed dormancy in true (botanical) potato seeds." Seed Science Research 15, no. 2 (June 2005): 77–88. http://dx.doi.org/10.1079/ssr2005198.

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As seed dormancy is released within a seed population, both the rate and percentage of germination increase progressively with increasing dose of a dormancy-breaking treatment or condition. Population-based models can account for this behaviour on the basis of shifting response thresholds as dormancy is alleviated. In particular, hydrothermal time analysis of germination sensitivity to water potential (Ψ) and temperature (T) can describe these features of seed behaviour. We used the hydrothermal time model to analyse the effects of dormancy-breaking treatments on germination of dormant true (b
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15

Grose, C. J., and J. C. Afonso. "The hydrothermal power of oceanic lithosphere." Solid Earth 6, no. 4 (October 21, 2015): 1131–55. http://dx.doi.org/10.5194/se-6-1131-2015.

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Abstract. We have estimated the power of ventilated hydrothermal heat transport, and its spatial distribution, using a set of recently developed plate models which highlight the effects of axial hydrothermal circulation and thermal insulation by oceanic crust. Testing lithospheric cooling models with these two effects, we estimate that global advective heat transport is about 6.6 TW, significantly lower than most previous estimates, and that the fraction of that extracted by vigorous circulation on the ridge axes (< 1 My old) is about 50 % of the total, significantly higher than previous es
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16

Dahal, Peetambar, and Kent J. Bradford. "Hydrothermal time analysis of tomato seed germination at suboptimal temperature and reduced water potential." Seed Science Research 4, no. 2 (June 1994): 71–80. http://dx.doi.org/10.1017/s096025850000204x.

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AbstractBoth temperature (T) and water potential (ψ) have consistent and quantifiable effects on the rate and extent of seed germination (radicle emergence). Germination at suboptimal T can be characterized on the basis of thermal time, or the T in excess of a base (Tb) multiplied by the time to a given percentage germination (tg). Similarly, germination at reduced ψ can be characterized on a hydrotime basis, or the ψ in excess of a base (ψb) multiplied by tg. Within a seed population, the variation in thermal times to germination for a specific percentage (g) is based upon the normal distribu
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17

Saberali, S. F., and Z. Shirmohamadi-Aliakbarkhani. "Quantifying seed germination response of melon (Cucumis melo L.) to temperature and water potential: Thermal time, hydrotime and hydrothermal time models." South African Journal of Botany 130 (May 2020): 240–49. http://dx.doi.org/10.1016/j.sajb.2019.12.024.

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18

Lin, Yousheng, Xiaoqian Ma, Xiaowei Peng, and Zhaosheng Yu. "Forecasting the byproducts generated by hydrothermal carbonisation of municipal solid wastes." Waste Management & Research: The Journal for a Sustainable Circular Economy 35, no. 1 (November 25, 2016): 92–100. http://dx.doi.org/10.1177/0734242x16678063.

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The influences of temperature and residence times on the conversion and product distribution during hydrothermal carbonisation of municipal solid wastes were investigated. Analysis of variance and reaction severity were used to comprehensively analyse the experimental results. Analysis results showed both reaction temperature and residence time had varying degrees of impact on production distribution and hydrochars characteristic, while the effect of combine temperature and time was negligible. It is novel to find that the products yield was a linear function of the logarithm of the reaction o
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19

Gareca, Edgar E., Filip Vandelook, Milton Fernández, Martin Hermy, and Olivier Honnay. "Seed germination, hydrothermal time models and the effects of global warming on a threatened high Andean tree species." Seed Science Research 22, no. 4 (October 4, 2012): 287–98. http://dx.doi.org/10.1017/s0960258512000189.

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AbstractSeed germination is a crucial event in a plant's life cycle. Because temperature and water availability are important regulators of seed germination, this process will likely be influenced by global warming. Insight into the germination process under global warming is thus crucial, and requires the study of a wide range of water availability and temperature conditions. As hydrothermal time (HTT) models evaluate seed germination for any combination of water potential and temperature, they can be suitable to predict global warming effects on seed germination. We studied the germination c
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20

Colonetti, Bruno, Erlon Cristian Finardi, and Welington de Oliveira. "A Mixed-Integer and Asynchronous Level Decomposition with Application to the Stochastic Hydrothermal Unit-Commitment Problem." Algorithms 13, no. 9 (September 18, 2020): 235. http://dx.doi.org/10.3390/a13090235.

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Independent System Operators (ISOs) worldwide face the ever-increasing challenge of coping with uncertainties, which requires sophisticated algorithms for solving unit-commitment (UC) problems of increasing complexity in less-and-less time. Hence, decomposition methods are appealing options to produce easier-to-handle problems that can hopefully return good solutions at reasonable times. When applied to two-stage stochastic models, decomposition often yields subproblems that are embarrassingly parallel. Synchronous parallel-computing techniques are applied to the decomposable subproblem and fr
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21

Masin, Roberta, Donato Loddo, Stefano Benvenuti, Stefan Otto, and Giuseppe Zanin. "Modeling Weed Emergence in Italian Maize Fields." Weed Science 60, no. 2 (June 2012): 254–59. http://dx.doi.org/10.1614/ws-d-11-00124.1.

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A hydrothermal time model was developed to simulate field emergence for three weed species in maize (common lambsquarters, johnsongrass, and velvetleaf). Models predicting weed emergence facilitate well-timed and efficient POST weed control strategies (e.g., chemical and mechanical control methods). The model, called AlertInf, was created by monitoring seedling emergence from 2002 to 2008 in field experiments at three sites located in the Veneto region in northeastern Italy. Hydrothermal time was calculated using threshold parameters of temperature and water potential for germination estimated
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22

Grasby, Stephen E., and Ian Hutcheon. "Controls on the distribution of thermal springs in the southern Canadian Cordillera." Canadian Journal of Earth Sciences 38, no. 3 (March 1, 2001): 427–40. http://dx.doi.org/10.1139/e00-091.

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Thermal springs examined in southern British Columbia are restricted to six major Eocene or later brittle fault systems. These faults provide a high-permeability flow path that allows for deep circulation of meteoric water. The depth of circulation, and thus temperature, is largely influenced by fault plane geometry. Calculated circulation depths of up to 4.8 km are consistent with models for hydrothermal ore deposits that invoke the mixing of mineralizing fluids with sulphur-rich meteoric water at depth. Mass-flux calculations indicate that a relatively small spring (5 L/s) can transport larg
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23

Coco, A., J. Gottsmann, F. Whitaker, A. Rust, G. Currenti, A. Jasim, and S. Bunney. "Numerical models for ground deformation and gravity changes during volcanic unrest: simulating the hydrothermal system dynamics of a restless caldera." Solid Earth 7, no. 2 (April 12, 2016): 557–77. http://dx.doi.org/10.5194/se-7-557-2016.

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Abstract. Ground deformation and gravity changes in restless calderas during periods of unrest can signal an impending eruption and thus must be correctly interpreted for hazard evaluation. It is critical to differentiate variation of geophysical observables related to volume and pressure changes induced by magma migration from shallow hydrothermal activity associated with hot fluids of magmatic origin rising from depth. In this paper we present a numerical model to evaluate the thermo-poroelastic response of the hydrothermal system in a caldera setting by simulating pore pressure and thermal
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Coco, A., J. Gottsmann, F. Whitaker, A. Rust, G. Currenti, A. Jasim, and S. Bunney. "Numerical models for ground deformation and gravity changes during volcanic unrest: simulating the hydrothermal system dynamics of an active caldera." Solid Earth Discussions 7, no. 3 (August 5, 2015): 2055–107. http://dx.doi.org/10.5194/sed-7-2055-2015.

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Abstract. Ground deformation and gravity changes in active calderas during periods of unrest can signal an impending eruption and thus must be correctly interpreted for hazard evaluation. It is critical to differentiate variation of geophysical observables related to volume and pressure changes induced by magma migration from shallow hydrothermal activity associated with hot fluids of magmatic origin rising from depth. In this paper we present a numerical model to evaluate the thermo-poroelastic response of the hydrothermal system in a caldera setting by simulating pore pressure and thermal ex
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Blach, Tobias, and Markus Engelhart. "Optimizing the Hydrothermal Carbonization of Sewage Sludge—Response Surface Methodology and the Effect of Volatile Solids." Water 13, no. 9 (April 28, 2021): 1225. http://dx.doi.org/10.3390/w13091225.

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This study focuses on identifying the optimum conditions of sewage sludge hydrothermal carbonization by Box–Behnken Design and on the effects of volatile solids on heating value and on process water load. To get insight into the solid and process water characteristics, we applied the Box–Behnken Design on the hydrothermal reaction temperature (190, 220, 250 °C), reaction time (0.5, 2.25, 4 h) and pH (3.9, 5, 6.1). The response surface of the liquid phase revealed decreasing dissolved organic carbon (DOC) concentrations with increasing temperature from 9446 mg/L (190 °C) to 7402 mg/L (250 °C) a
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Chen, Wei, Yongxin Yang, and Biao Li. "Discussion of a Coupled Strength Attenuation Model for GFRP Composites in Hydrothermal Environments." International Journal of Polymer Science 2016 (2016): 1–6. http://dx.doi.org/10.1155/2016/4258729.

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The existing attenuation models for the durability of FRP (fiber-reinforced polymer) composites in hydrothermal environments were compared, and a new coupled strength attenuation model with a temperature parameter was proposed in this paper. A series of durability experiments on GFRP sheets in hydrothermal environments were conducted to validate the accuracy and rationality of the new model. A comparison between experimental data and the calculation results of the coupled model indicated that the new model can fit better with the experimental data and effectively reflect the convergence phenom
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Clay, Sharon A., Adam Davis, Anita Dille, John Lindquist, Analiza H. M. Ramirez, Christy Sprague, Graig Reicks, and Frank Forcella. "Common Sunflower Seedling Emergence across the U.S. Midwest." Weed Science 62, no. 1 (March 2014): 63–70. http://dx.doi.org/10.1614/ws-d-13-00078.1.

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Predictions of weed emergence can be used by practitioners to schedule POST weed management operations. Common sunflower seed from Kansas was used at six Midwestern U.S. sites to examine the variability that 16 climates had on common sunflower emergence. Nonlinear mixed effects models, using a flexible sigmoidal Weibull function that included thermal time, hydrothermal time, and a modified hydrothermal time (with accumulation starting from January 1 of each year), were developed to describe the emergence data. An iterative method was used to select an optimal base temperature (Tb) and base and
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Hay, Fiona R., Andrew Mead, and Mark Bloomberg. "Modelling seed germination in response to continuous variables: use and limitations of probit analysis and alternative approaches." Seed Science Research 24, no. 3 (July 7, 2014): 165–86. http://dx.doi.org/10.1017/s096025851400021x.

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AbstractProbit-based models relating a proportional response variable to a temporal explanatory variable, assuming that the times to response are normally distributed within the population, have been used in seed biology for describing the rate of loss of viability during seed ageing and the progress of germination over time in response to environmental signals (e.g. water, temperature). These models may be expressed as generalized linear models (GLMs) with a probit (cumulative normal distribution) link function, and, using GLM fitting procedures in current statistical software, parameters of
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Schutte, Brian J., Emilie E. Regnier, S. Kent Harrison, Jerron T. Schmoll, Kurt Spokas, and Frank Forcella. "A Hydrothermal Seedling Emergence Model for Giant Ragweed (Ambrosia trifida)." Weed Science 56, no. 4 (August 2008): 555–60. http://dx.doi.org/10.1614/ws-07-161.1.

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Late-season giant ragweed emergence in Ohio crop fields complicates decisions concerning the optimum time to implement control measures. Our objectives were to develop a hydrothermal time emergence model for a late-emerging biotype and validate the model in a variety of locations and burial environments. To develop the model, giant ragweed seedlings were counted and removed weekly each growing season from 2000 to 2003 in a fallow field located in west central Ohio. Weather data, soil characteristics and geographic location were used to predict soil thermal and moisture conditions with the Soil
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Masin, Roberta, Donato Loddo, Stefano Benvenuti, Maria Clara Zuin, Mario Macchia, and Giuseppe Zanin. "Temperature and Water Potential as Parameters for Modeling Weed Emergence in Central-Northern Italy." Weed Science 58, no. 3 (September 2010): 216–22. http://dx.doi.org/10.1614/ws-d-09-00066.1.

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Predicting weed emergence dynamics can help farmers to plan more effective weed control. The hydrothermal time concept has been used to model emergence as a function of temperature and water potential. Application of this concept is possible if the specific biological thresholds are known. This article provides a data set of base temperature and water potential of eight maize weeds (velvetleaf, redroot pigweed, common lambsquarters, large crabgrass, barnyardgrass, yellow foxtail, green foxtail, and johnsongrass). For five of these species, two ecotypes from two extreme regions of the predomina
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Allen, Phil S., and Susan E. Meyer. "Ecological aspects of seed dormancy loss." Seed Science Research 8, no. 2 (June 1998): 183–92. http://dx.doi.org/10.1017/s0960258500004098.

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AbstractAdvances in seed biology include progress in understanding the ecological significance of seed dormancy mechanisms. This knowledge is being used to make more accurate predictions of germination timing in the field. For several wild species whose seedlings establish in spring, seed populations show relevant variation that can be correlated with habitat conditions. Populations from severe winter sites, where the major risk to seedlings is frost, tend to have long chilling requirements or to germinate very slowly at low temperatures. Populations from warmer sites, where the major risk is
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Silva, Isadora Ferreira da, José Humberto Queiroz, and José Maria Rodrigues Da Luz. "OPTIMIZATION OF HYDROTHERMAL PRETREATMENT FOR ENZYMATIC HYDROLYSIS OF BANANA PSEUDO STEM USING RESPONSE SURFACE METHODOLOGY." Fungal Territory 2, no. 4 (October 30, 2019): 32–38. http://dx.doi.org/10.36547/ft.2019.2.4.32-38.

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In this study different conditions of hydrothermal pretreatment were evaluated for conversion of banana pseudo stem to fermentable sugars. A Central Composite Design (CCD) was used to obtain regression equations in function of the following variables: solid/liquid ratio (1/10; 1/12.5; 1/15), temperature (170 °C, 190 °C, 210 °C) and reaction time (10 min, 15 min, 20 min). The cellulose digestibility improved in all conditions tested, with maximum digestibility achieved at 210 °C for 10 minutes and 1/15 of solid/liquid ratio. The Glucose yield at optimal conditions was 58.4 g/kg with an excellen
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Lee, Min-Gyu, Sang-Kyu Kam, and Chang-Han Lee. "Kinetic and isothermal adsorption properties of strontium and cesium ions by zeolitic materials synthesized from Jeju volcanic rocks." Environmental Engineering Research 26, no. 2 (May 19, 2020): 200127–0. http://dx.doi.org/10.4491/eer.2020.127.

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The study focused on the removal of Sr and Cs ions in aqueous solutions by zeolitic materials synthesized from Jeju volcanic rocks using a fusion/hydrothermal method. The synthesis of the zeolitic materials was carried out using the fusion/hydrothermal method to reduce crystallization time. Morphological structures of the zeolitic materials could be confirmed to be the Na-A zeolite structure and crystalline with the chamfered-edged structure. In the adsorption experiment, as the initial concentrations of the Sr and Cs ions increased, it took longer to reach adsorption equilibrium. The adsorpti
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Xia, Kai, Yongfu Guo, Qijun Shao, Qu Zan, and Renbi Bai. "Removal of Mercury (II) by EDTA-Functionalized Magnetic CoFe2O4@SiO2 Nanomaterial with Core-Shell Structure." Nanomaterials 9, no. 11 (October 29, 2019): 1532. http://dx.doi.org/10.3390/nano9111532.

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In order to reduce the difficulty and risk of operation, decrease the preparation time and improve the adsorption performance of magnetic nano-silicon adsorbent with core-shell structure, a carboxylated CoFe2O4@SiO2 was prepared by EDTA-functionalized method using a safe, mild and simple hydrothermal method. The results show that the prepared material of CoFe2O4@SiO2-EDTA has a maximum adsorption capacity of 103.3 mg/g for mercury ions (Hg(II)) at pH = 7. The adsorption process of Hg(II) is a chemical reaction involving chelation and single-layer adsorption, and follows the pseudo-second-order
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Romano, Davide, Alessandro Gattuso, Manfredi Longo, Cinzia Caruso, Gianluca Lazzaro, Andrea Corbo, and Francesco Italiano. "Hazard Scenarios Related to Submarine Volcanic-Hydrothermal Activity and Advanced Monitoring Strategies: A Study Case from the Panarea Volcanic Group (Aeolian Islands, Italy)." Geofluids 2019 (October 13, 2019): 1–15. http://dx.doi.org/10.1155/2019/8728720.

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Geohazards associated to submarine hydrothermal systems still represent a tricky enigma to face and solve for the scientific community. The poor knowledge of a submarine environment, the rare and scarce monitoring activities, and the expensive and sometimes complicated logistics are the main problems to deal with. The submarine low-energy explosion, which occurred last November 3, 2002, off the volcanic island of Panarea, highlighted the absence of any hazard scenario to be used to manage the volcanic crisis. The “unrest” of the volcanic activity was triggered by a sudden input of deep magmati
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Biscay, Nicolas, Lucile Henry, Tadafumi Adschiri, Masahiro Yoshimura, and Cyril Aymonier. "Behavior of Silicon Carbide Materials under Dry to Hydrothermal Conditions." Nanomaterials 11, no. 5 (May 20, 2021): 1351. http://dx.doi.org/10.3390/nano11051351.

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Silicon carbide materials are excellent candidates for high-performance applications due to their outstanding thermomechanical properties and their strong corrosion resistance. SiC materials can be processed in various forms, from nanomaterials to continuous fibers. Common applications of SiC materials include the aerospace and nuclear fields, where the material is used in severely oxidative environments. Therefore, it is important to understand the kinetics of SiC oxidation and the parameters influencing them. The first part of this review focuses on the oxidation of SiC in dry air according
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Kapetanakis, Theodoros N., Ioannis O. Vardiambasis, Christos D. Nikolopoulos, Antonios I. Konstantaras, Trinh Kieu Trang, Duy Anh Khuong, Toshiki Tsubota, Ramazan Keyikoglu, Alireza Khataee, and Dimitrios Kalderis. "Towards Engineered Hydrochars: Application of Artificial Neural Networks in the Hydrothermal Carbonization of Sewage Sludge." Energies 14, no. 11 (May 21, 2021): 3000. http://dx.doi.org/10.3390/en14113000.

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Sewage sludge hydrochars (SSHs), which are produced by hydrothermal carbonization (HTC), offer a high calorific value to be applied as a biofuel. However, HTC is a complex processand the properties of the resulting product depend heavily on the process conditions and feedstock composition. In this work, we have applied artificial neural networks (ANNs) to contribute to the production of tailored SSHs for a specific application and with optimum properties. We collected data from the published literature covering the years 2014–2021, which was then fed into different ANN models where the input d
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Bogossian, Jessica, Anthony I. S. Kemp, and Steffen G. Hagemann. "Linking Gold Systems to the Crust-Mantle Evolution of Archean Crust in Central Brazil." Minerals 11, no. 9 (August 30, 2021): 944. http://dx.doi.org/10.3390/min11090944.

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The Goiás Archean Block (GAB) in central Brazil is an important gold district that hosts several world-class orogenic gold deposits. A better comprehension of the crustal, tectono-magmatic, and metallogenic settings of the GAB is essential to accurately define its geological evolution, evaluate Archean crustal growth models, and target gold deposits. We present an overview of gold systems, regional whole-rock Sm-Nd analyses that have been used to constrain the geological evolution of the GAB, and augment this with new in situ zircon U-Pb and Hf-O isotope data. The orogenic gold deposits show v
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Ebadi, Seyed Eshagh, Zaidon Ashaari, and Mohammad Jawaid. "Optimization and empirical modelling of physical ‎properties of hydrothermally treated ‎oil ‎palm wood in ‎different ‎buffered media using ‎response ‎surface ‎methodology." BioResources 16, no. 2 (February 8, 2021): 2385–405. http://dx.doi.org/10.15376/biores.16.2.2385-2405.

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Physical properties are one of the ‎drawbacks of oil palm wood ‎‎(OPW) and they need to ‎be ‎improved via an appropriate method. The ‎response surface methodology (RSM) based on central composite ‎design (CCD) was used to evaluate and optimize the parameters of a hydrothermal treatment ‎and to create an ‎empirical model of the mass loss (ML, %), equilibrium moisture ‎content ‎‎(EMC, %), and anti-swelling efficiency (ASE24h, %)‎‏ ‏responses‎. This ‎study focused on the ‎effect of ‎hydrothermal treatment (HTT) ‎in ‎buffer solutions to control the ‎destructive effects of ‎released ‎acids ‎caused
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Royo-Esnal, Aritz, Joel Torra, Josep Antoni Conesa, Frank Forcella, and Jordi Recasens. "Modeling the Emergence of Three Arable Bedstraw (Galium) Species." Weed Science 58, no. 1 (March 2010): 10–15. http://dx.doi.org/10.1614/ws-09-063.1.

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Multiyear field data from Spain were used to model seedling emergence for three bedstraw species (Galium) that can coexist in winter cereal fields. The relationships between cumulative emergence and both growing degree days (GDD) and hydrothermal time (HTT) in soil were analyzed as sigmoid growth functions (Weibull). Iterations of base temperature and base water potential were used to optimize the HTT scale. All species were well described with Weibull functions. Both GDD and HTT models provided good descriptions of catchweed bedstraw emergence, as its seedlings have less dependence on soil wa
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Guillou-Frottier, Laurent, Hugo Duwiquet, Gaëtan Launay, Audrey Taillefer, Vincent Roche, and Gaétan Link. "On the morphology and amplitude of 2D and 3D thermal anomalies induced by buoyancy-driven flow within and around fault zones." Solid Earth 11, no. 4 (August 26, 2020): 1571–95. http://dx.doi.org/10.5194/se-11-1571-2020.

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Abstract. In the first kilometers of the subsurface, temperature anomalies due to heat conduction processes rarely exceed 20–30 ∘C. When fault zones are sufficiently permeable, fluid flow may lead to much larger thermal anomalies, as evidenced by the emergence of thermal springs or by fault-related geothermal reservoirs. Hydrothermal convection triggered by buoyancy effects creates thermal anomalies whose morphology and amplitude are not well known, especially when depth- and time-dependent permeability is considered. Exploitation of shallow thermal anomalies for heat and power production part
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Davis, Adam S., Sharon Clay, John Cardina, Anita Dille, Frank Forcella, John Lindquist, and Christy Sprague. "Seed Burial Physical Environment Explains Departures from Regional Hydrothermal Model of Giant Ragweed (Ambrosia trifida) Seedling Emergence in U.S. Midwest." Weed Science 61, no. 3 (September 2013): 415–21. http://dx.doi.org/10.1614/ws-d-12-00139.1.

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Robust predictions of weed seedling emergence from the soil seedbank are needed to aid weed management. A common seed accession (Illinois) of giant ragweed was buried in replicate experimental gardens over 18 site years in Illinois, Michigan, Kansas, Nebraska, Ohio, and South Dakota to examine the importance of site and climate variability by year on seedling emergence. In a nonlinear mixed-effects modeling approach, we used a flexible sigmoidal function (Weibull) to model giant ragweed cumulative seedling emergence in relation to hydrothermal time accumulated in each site-year. An iterative s
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MAGDALENA, Carina Pitwak, Denise Alves FUNGARO, and Patricia CUNICO. "REACTIVE AZO DYE ADSORPTION USING ZEOLITIC MATERIAL: CONTACT TIME, pH, TEMPERATURE AND EFFECT OF SALTS." Periódico Tchê Química 09, no. 17 (January 20, 2012): 48–59. http://dx.doi.org/10.52571/ptq.v9.n17.2011.48_periodico17_pgs_48_59.pdf.

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Textile effluents, when not correctly treated, cause a high impact to the environment. The synthetic dyes are used in the fibber dying process, but part of them is discarded to receiving water body. The adsorption is a technique that has been used successfully for an effective removal of color. In this work, the adsorption of reactive dye Remazol Red RB from aqueous solution using zeolite of coal ash as low cost adsorbent was studied. The zeolite was synthesized by hydrothermal treatment with NaOH solution. The effect of experimental parameters such as contact time, pH, temperature and adding
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Moltchanova, Elena, Shirin Sharifiamina, Derrick J. Moot, Ali Shayanfar, and Mark Bloomberg. "Comparison of three different statistical approaches (non-linear least-squares regression, survival analysis and Bayesian inference) in their usefulness for estimating hydrothermal time models of seed germination." Seed Science Research 30, no. 1 (March 2020): 64–72. http://dx.doi.org/10.1017/s0960258520000082.

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AbstractHydrothermal time (HTT) models describe the time course of seed germination for a population of seeds under specific temperature and water potential conditions. The parameters of the HTT model are usually estimated using either a linear regression, non-linear least squares estimation or a generalized linear regression model. There are problems with these approaches, including loss of information, and censoring and lack of independence in the germination data. Model estimation may require optimization, and this can have a heavy computational burden. Here, we compare non-linear regressio
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Piochi, Monica, Barbara Cantucci, Giordano Montegrossi, and Gilda Currenti. "Hydrothermal Alteration at the San Vito Area of the Campi Flegrei Geothermal System in Italy: Mineral Review and Geochemical Modeling." Minerals 11, no. 8 (July 27, 2021): 810. http://dx.doi.org/10.3390/min11080810.

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The Campi Flegrei geothermal system sets in one of the most famous and hazardous volcanic caldera in the world. The geothermal dynamics is suspected to have a crucial role in the monitored unrest phases and in the eruption triggering as well. Numerical models in the literature do not properly consider the geochemical effects of fluid-rock interaction into the hydrothermal circulation and this gap limits the wholly understanding of the dynamics. This paper focuses on fluid-rock interaction effects at the Campi Flegrei and presents relevant information requested for reactive transport simulation
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Li, Xuli, Yue Zeng, Fangyuan Chen, Teng Wang, Yixin Li, Yuchi Chen, Haobo Hou, and Min Zhou. "Synthesis of Zeolite from Carbothermal Reduction Electrolytic Manganese Residue for the Removal of Macrolide Antibiotics from Aqueous Solution." Materials 11, no. 11 (October 30, 2018): 2133. http://dx.doi.org/10.3390/ma11112133.

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Zeolite analcime (EMANA) was synthesized through the hydrothermal method by using carbothermal reduction electrolytic manganese residue (CR-EMR). The structural properties of EMANA and CR-EMR were studied using various characterization techniques. After hydrothermal synthesis, the CR-EMR became super-microporous, and the surface area increased by 4.76 times than before. Among the various synthesized zeolites, 6 h-synthesized EMANA was selected as the best adsorbent for macrolide antibiotics in aqueous solution. The adsorption performance of EMANA on the adsorption capacity was examined by usin
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Zhao, Zhun, Zhenhua Li, Penglei Cui, Shengli Li, and Lingqian Kong. "Adsorption of Basic Brown and Chrysophenine from Water Solution by Magnesium Silicate Gel." Journal of Chemistry 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/374190.

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Noncrystalline, high surface area magnesium silicate gel was successfully prepared by hydrothermal method. Such product was characterized by BET and XRD to determine surface area 576.4 m2·g−1, average pore width 2.76 nm, and amorphous surface. The adsorption behaviors of Basic Brown and Chrysophenine on magnesium silicate gel were investigated through changing initial concentration, adsorbent dosage, solution pH, contact time, and temperature. The experimental data was analyzed by the adsorption isotherms and kinetics. The results showed the adsorption progress was fast for Basic Brown, and th
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Yogeshwar, Pritam, Mira Küpper, Bülent Tezkan, Volker Rath, Duygu Kiyan, Svetlana Byrdina, José Cruz, César Andrade, and Fatima Viveiros. "Innovative boat-towed transient electromagnetics — Investigation of the Furnas volcanic lake hydrothermal system, Azores." GEOPHYSICS 85, no. 2 (March 1, 2020): E41—E56. http://dx.doi.org/10.1190/geo2019-0292.1.

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Water-covered areas may lead to gaps in surface electromagnetic surveys, causing reduced resolution and, as a consequence, increased uncertainty in derived subsurface models. We have evaluated a boat-towed floating central loop time-domain electromagnetic technique that mitigates this problem. It facilitates obtaining data with a spatial sampling density, which is rarely possible with standard instrumentation on land, and it only requires moderate logistical effort. A unique field study on a shallow volcanic lake demonstrated that this method is feasible with only a minor loss of accuracy when
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Courtney-Davies, Liam, Cristiana L. Ciobanu, Simon R. Tapster, Nigel J. Cook, Kathy Ehrig, James L. Crowley, Max R. Verdugo-Ihl, Benjamin P. Wade, and Daniel J. Condon. "OPENING THE MAGMATIC-HYDROTHERMAL WINDOW: HIGH-PRECISION U-Pb GEOCHRONOLOGY OF THE MESOPROTEROZOIC OLYMPIC DAM Cu-U-Au-Ag DEPOSIT, SOUTH AUSTRALIA." Economic Geology 115, no. 8 (August 27, 2020): 1855–70. http://dx.doi.org/10.5382/econgeo.4772.

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Abstract Establishing timescales for iron oxide copper-gold (IOCG) deposit formation and the temporal relationships between ores and the magmatic rocks from which hydrothermal, metal-rich fluids are sourced is often dependent on low-precision data, particularly for deposits that formed during the Proterozoic. Unlike accessory minerals routinely used to track hydrothermal mineralization, iron oxides are dominant components of IOCG systems and are therefore pivotal to understanding deposit evolution. The presence of ubiquitous, magmatic-hydrothermal U-(Pb)-W-Sn-Mo–bearing zoned hematite resolves
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Guo, Linghui, Jiangbo Gao, Chengyuan Hao, Linlin Zhang, Shaohong Wu, and Xiangming Xiao. "Winter Wheat Green-up Date Variation and its Diverse Response on the Hydrothermal Conditions over the North China Plain, Using MODIS Time-Series Data." Remote Sensing 11, no. 13 (July 4, 2019): 1593. http://dx.doi.org/10.3390/rs11131593.

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Vegetation phenology plays a critical role in the dynamic response of terrestrial ecosystems to climate change. However, the relationship between the phenology of winter wheat and hydrothermal factors is inadequate, especially in typical agricultural areas. In this study, the possible effects of preseason climate changes on the green-up date (GUD) of winter wheat over the North China Plain (NCP) was investigated, using the MODIS EVI 8-day time-series data from 2000 to 2015, as well as the concurrent monthly mean temperature (Tm), mean maximum (Tmax) and minimum temperature (Tmin) and total pre
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