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Although access to clean and potable water is a requirement for healthy living, the constant release of non-point source pollutants into water bodies has resulted in water quality degradation. In a bid to curb this situation, water quality models are used as a tool. This study reviews 10 non-point source models, namely: AGNPS, ANSWERS, CREAMS, SWRRB, HSPF, SWAT, EPD RIV1, DMA, CMBA, and MA, giving...
Nitrogen has significant adverse effects on the environment and leads to operational failure in biological treatment units. Therefore, it is necessary to investigate and implement new nitrogen conversion pathways in order to expand alternatives for in-situ/ex-situ leachate treatment systems. In this study, microbial species responsible for nitrogen conversion were quantitatively investigated based...
A uniform and eco-friendly heating source, ultraviolet radiation has auspiciously improved the disperse dyeing of polyester fabrics. For our current study we used disperse yellow 211 (DY 211) to dye polyester fabric under the influence of ultraviolet treatment. Both the fabric and dye solution were UV-treated for 15-60 min and dyed under variable conditions. We found that ultraviolet-treated polyester...
The article deals with the problems of sustainable development of agricultural sector in the Republic of Kazakhstan; the analysis of the development of the agro-industrial complex; the problems of ensuring the sustainability of agriculture are emphasized and analyzed. Agriculture has historically been the backbone of Kazakhstan's economy. This is mainly due to the difference in natural and climatic...
Exploring building energy demands under the conditions of climate change can provide a basis for promoting building energy efficiency. The heating and cooling loads of commercial and residential buildings with different energy-saving standards from 1961-2009 in a large city in northern China were simulated and their responses to climate change and variability were analyzed. The results showed that...
In the present study we investigated the leaching behaviour of hexaconazole fungicide in two soil packed columns, namely disturbed and undisturbed soil columns in field conditions. The effects of simulated rainfall (100 mL, 200 mL, and 400 mL) and application rate at recommended dosage (4.5 g a.i/palm tree) and double recommended dosage (9.0 g a.i/palm tree) were also studied. The residual of hexaconazole...
This study evaluates integrative lotic ecosystem health using neural network modeling and principal component analysis of physical, chemical, and biological parameters in 33 streams and rivers of a large watershed. Water chemistry parameters were measured to detect chemical health, and physical habitat health was determined by a model of qualitative habitat evaluation index (QHEI). Also, biological...
This study was carried out to determine the heavy metal contents of hollyhock (Alcea rosea L.) in roadside soils of Van Lake Basin. The leaf samples of the hollyhock were taken from the roadside areas affected by heavy metal pollution due to intensive motorized traffic and from areas 30 m from the roadside by taking into account prevailing wind direction in 10 different locations. There were only...
With China’s rapid economic growth over the past three decades, the emission of greenhouse gases (GHG) has become more serious to the environment, with debilitating effects on both flora and fauna. This paper mainly investigates the relationship among economic growth, energy intensity, and CO₂ emission in China using static and dynamic regressions, Granger causality, and impulse response function...
Our paper presents the results of determining temporal variability in the water table depth in topohydrosequence of Retisols/Luvisols and Phaeozems/Gleysols. Assessing temporal variability in the water table was done using geostatistical and statistical methods. The mean annual water table depth in soils occupying higher locations in the relief were determined by precipitation in the given and previous...
Sonneratia alba (S. alba) is a mangrove species grown in brackish water of tropical and subtropical regions. Due to its unique environment, it has evolved various mechanisms for modulating salt and metal levels. In order to find the genes connected with bioaccumulation of metals, the root transcriptome annotation of Sonneratia alba was analyzed and a new metallothionein (MT) gene was cloned. Sequence...
In a field experiment, processing tomato plants inoculated with arbuscular mycorrhizae (AM) and non-inoculated (Control) were supplied with three levels of watering. The AM inoculation significantly increased tomato root colonization regardless of the water supply levels. Under water deficit conditions, AM inoculation significantly increased the biomass production (from 1,189 to 2,062 g plant⁻¹)....
The effects of electrocoagulation on COD removal of Nam Phong swine slaughterhouse wastewater (Binh Thanh District, Ho Chi Minh City, Vietnam) were investigated in this paper. For this purpose, response surface methodology (RSM) was employed to investigate the effects of three operating conditions on COD removal by electrocoagulation (EC) with iron electrodes. A central composite design (CCD) was...
Nanoscale zero-valent iron (NZVI) as an effective material has been applied to reduce nitrate. Yet NZVI has defects of aggregation and oxidation. To overcome these disadvantages, nanoscale bimetallic iron/copper particles were introduced to reduce nitrate in this work. In this paper, nanoscale bimetallic Fe/Cu particles were prepared by the liquid phase chemical reduction method; the particles were...
This study determined the relationship of urease and catalase enzyme activity and nutrient elements related to the use of soil. We identitified urease and catalase enzymes and calcium (Ca), magnesium (Mg), iron (Fe), zinc (Zn), copper (Cu), and manganese (Mn) as nutrient elements, and total nitrogen (N), phosphorus (P) useful for plants, and exchangeable potassium (K) were identified in soils used...
Stachys pilifera is an endemic plant to Iran. The main purpose of this study was to investigate the impacts of some habitat characteristics on the distribution of S. pilifera using the BMLR model in Kohgiluyeh and Boyer-Ahmad Province, Iran. Tow transects were randomly established in each region. 10 quadrats sized 1 x 1 m² were established along the transect. In each plot, canopy cover (%) of S. pilifera...
For more efficient utilization of agricultural organic waste composts, this research formulates the demand of agricultural organic waste composts and the supply of compost converted from agricultural organic waste in the region, and models the demand-supply balance of agricultural organic waste compost in some regions. Objects of study include 6 urban districts, 5 county-level cities, and 21 counties...
The ecosystem services value of paddy fields has received increasing attention in agricultural policy decisions. This paper presents the first study to investigate the effects of rice water-saving irrigation on the economic value of gas exchange in a paddy field ecosystem based on a field experiment. The results showed that, compared to traditional flooding irrigation (FI), controlled irrigation (CI)...
The aim of this article is to define the possibilities of applying multivariate statistical analysis (PCA and control charts) in the monitoring of the effectiveness of biological nitrification in a wastewater treatment plant working for the municipality of Sanok. The difference in oxygen affinity between ammonium and nitrite oxidizers results in a bacteria competition between AOM and NOM. A more stable...
The results of atmospheric deposition of trace elements in a 2015 moss survey in Georgia are reported. The 36 moss samples were collected in different regions of the Caucasus in compliance with the UNECE ICP Vegetation guidelines. Elemental determination was carried out by epithermal neutron activation analysis (ENAA). For the first time, 47 elements were determined for the sampled areas. The scanning...
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