The newly developed open-source Hydrological Pixel model, HyPix, written in the fast and flexible Julia language, efficiently solves mixed form of Richardson–Richards’ equation (RRE). HyPix uses a cell-centred, finite-volume scheme for spatial discretization, with an implicit Euler temporal by using weighted average inter-cell hydraulic conductivity. includes following modules: (a) rainfall int...

The objective of this research was to assess the use unsaturated water flow in terms soil evaporation, which determined by evaluating some hydraulic parameters different textures. results show that predicted values these parameters, were obtained through inverse modeling with HYDRUS-1D software and depend on change volumetric content, exhibited a significant agreement measured from laboratory o...

Potassium (K) is a critical nutrient for crops, as it major constituent in fertilizer formulations. With increasing concentrations of K agricultural soil, necessary to understand its movement and retention the soil. Sub-surface modeling an alternative method overcome exhausting uneconomical methods study determine actual concentration HYDRUS-1D considered effective finite-element model which su...

Freshwater resources in the North China Plain (NCP) are near depletion due to the unceasing overexploitation of deep groundwater, by far the most significant source of freshwater in the region. To deal with the deepening freshwater crisis, brackish water (rich but largely unused water in agriculture) is increasingly being used in irrigation in the region. However, inappropriate irrigation with ...

Water resource shortage has been a serious problem since the 1980s in the North China Plain (NCP), resulting in plenty of environmental problems. Estimating the groundwater recharge rate accurately is vital for managing groundwater effectively. This study applied several methods, including chloride mass-balance, tracers (bromide and tritium) and numerical modeling (Hydrus-1D), to estimate groun...

In September 1987 an accident occurred with a cesium chloride (CsCl) teletherapy source taken from a cancer therapy institute in Goiânia, Brazil. Misuse of the abandoned source caused widespread contamination of radioactive material (about 50 TBq of Cs) in the town of Goiânia. Decontamination of affected areas did lead to about 3,500 m of solid radioactive wastes, which were disposed in two nea...

The purpose of this study was to assess the transport of the herbicide bentazone [3-(1-methylethyl)-1H-2,1,3-benzothiadiazin-4(3H)one 2,2-dioxide] in three contrasting tile-drained cultivated field soils subject to otherwise similar experimental conditions. Observed drain discharge rates and chemical concentrations in the drainage water reflected the different transport processes at the three s...

We report the discovery of two new AM Herculis systems (polars), identified as the optical V∼19 mag and V∼20 mag counterparts of the soft X-ray sources RX J2022.6−3954 and RX J0132.7−6554 detected during the ROSAT All-Sky Survey and present the results of our optical and X-ray follow-up observations. From the cyclotron emission lines detected in the optical spectra we determine magnetic field s...