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Estimating field crop evapotranspiration (ETc) along with its components of soil evaporation and crop transpiration is crucial for developing effective agricultural water-saving strategies. This study separately estimated ETc and its components in cotton fields using a SIMDualKc dual crop coefficient model. Data from a 2-year experiment (2010-2011) were used for model calibration and validation analysis...
This study focuses on evaluating total phenolic contents (TPC) in Taraxacum officinale (L.), a member of the family Asteraceae (compositae). The TPC were estimated by Folin-Ciocalteu’s reagent and gallic acid was taken as standard. The amount of phenolics was communicated as gallic acid equivalent (GAE). The TPC varied from 41.47 mg/g to 691.6 mg/g in the Taraxacum officinale (L.) extracts. The maximum...
Magnetic induction intensity is a crucial factor for determining the effect of electronic anti-fouling technology, while current is an important factor in determining the strength of magnetic induction intensity. The series resistance method is used in an electronic anti-fouling system in order to get the current value in the coil wrapped around the PVC pipe. The peak current in the circuit is obtained...
The global warming caused by massive energy consumption is one of today’s most serious global environmental problems. CO₂ emissions by the electricity industry in China accounted for 10% of global CO₂ emissions in 2015. This paper studies the impact of different electricity production taxes on China’s energy, economy, and environment. Nine electricity tax scenarios with different tax rates and a dynamic...
This study aimed at pointing out the environmental importance of road construction in a semi-arid high mountainous area on soil erosion and some important soil properties throughout the forest road. In total 60 soil samples in both forest and open area were collected from topsoil (0-20 cm) of a cut slope, fill slope, and control points along with a forest road route. The soil properties were determined...
Fertilisation has the greatest impact on soil properties, and they in turn decide on the conversion and availability of fertilising compounds. The aim of the tests was to evaluate the influence of low-temperature (300℃) conversion of pig manure and poultry litter on (i) K, Mg, and P contents in biochars and (ii) reduction of acidification, cation exchange capacity, and availability of K, Mg, and P...
Seed germination is an important reproductive pattern for submerged macrophytes. In order to investigate the effects of animal herbivory and water depth on seed germination and seedling survival of Vallisneria natans and Hydrilla verticillata, we conducted an in-situ field experiment at 3 water depths (0.5, 1, and 2 m) with net and non-net (control) groups in Hangzhou West Lake, China. The results...
Microzooplankton plays an important role in controlling the standing crop of phytoplankton and primary production. However, research on microzooplankton grazing has mainly focused on the ocean and only rarely on eutrophic lakes. In this study we investigated plankton community structures, microzooplankton grazing rates (m), and phytoplankton growth rates (μ) in order to explore microzooplankton grazing...
One of the oldest oil refineries in the Middle East is located south of Ras Tanura in eastern Saudi Arabia, Arabian Gulf. Naturally occurring radionuclides may be associated with the extraction processes of oil and gas. Therefore, the activities concentrations of ²³⁸U, ²²⁶Ra, ²³²Th, ⁴⁰K, and ¹³⁷Cs in soil samples near Ras Tanura refinery were measured using the gamma ray spectrometric technique. The...
An enormous amount of waste material (sludge) generated from paper and pulp industries is either dumped or incinerated. However, this pulp is an enriched source of macronutrients and can be employed on agricultural land to improve its fertility. The current study was therefore performed to analyze phosphorus (P) and calcium (Ca) by flame photometer, nitrogen (N) by Kjeldahl method, and magnesium (Mg)...
Sustainable development is a multi-dimensional phenomenon, and its assessment is not easy and cannot be measured and expressed by one characteristic. The authors made an attempt at designing a synthetic measure thanks to which changes in sixteen regions of Poland between 2003 and 2013 are presented with respect to the level of sustainability based on three components: social, economic, and environmental...
Hydrological time series refers to the observation time point and the observed time value. The simulation and prediction of hydrological time series will greatly improve the predictability of hydrological time series, which is of great significance for hydrological forecasting. TensorFlow, the second generation of artificial intelligence learning system in Google, has been favored by a large number...
The aim of our research was to examine bone health in white-tailed eagles (Haliaeetus albicilla) that died in the years 2010-2016. The research was conducted on 37 complete skeletons of eagles that came from the territories of Poland and Germany. CT and digital radiography were used in the research, and anatomical and histological analyses were carried out. We described macroscopic bone lesions in...
Recently, the photocatalytic degradation technique with titanium dioxide (TiO₂) has been widely applied for the degradation of humic acid (HA) from aqueous solution due to its ability to achieve complete mineralization of organic contaminants. Because TiO₂ is the most commonly used semiconductor photocatalyst, efforts on the modification of TiO₂ in order to improve catalyst efficiency were presented...
Optimizing land use structure is currently a hot research topic in the land resource management field. In this study, we constructed a new land use structure optimization model based on the improved multi-objective differential evolution algorithm. This model made improvements in two aspects of the classic differential evolution algorithm, i.e., control parameters and adaptive strategies. On this...
Since waste residues of antimony ores are piled in a disorderly way long-term, heavy metal elements of the residues are dissolved and precipitated under the eluviation effect of snow and rain, causing serious pollution to the surrounding soil. This paper takes the antimony ore of Hunan stannary as the research area, and the surrounding soil of the storage yard of antimony ores as the research object,...
This study demonstrated the degradation of unionized acetate in anaerobic digestion at 45ºC through the identification of kinetics and inhibition parameters. The kinetic parameters, Ks and rmax, were determined using Monod-based model for three different conditions, namely uninhibited, inhibited, and systems with high substrate condition. The Ks values for uninhibited condition were in the range of...
In recent decades the Yinma River Basin has been receiving increasing pollution from industrial and domestic wastewater, agriculture, and livestock production – which are all potential 4-NP pollution sources. Thus, this work investigated spatial-seasonal distribution, risks, and seasonal variations of 4-nonylphenol in the aquatic environment of the Yinma River Basin. The results indicated that the...
This study compounds three types of coagulants (AlCl₃, FeCl₃, Fe₂(SO₄)₃) with promising effects on TP removal of domestic sewage. The optimum conditions for TP removal using¹ compounded coagulants are determined by Plackett-Burman (P-B) design, steepest ascent, and Box-Behnken design. The adequacy of the quadratic regression model is evaluated by analysis of variance (ANOVA). Results show that initial...
Water inrush is one of the typical geological hazards in the construction of high-risk tunnels, and has caused severe losses. To predict water inrush accurately, a novel model was put forward for karst tunnels in the present study. The ideal point method coupled with the analytic hierarchy process method (AHP) was applied for risk assessment of water inrush. First, the ideal point method was introduced...
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