Soil sample
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Part 1 of ebook "GIS applications in agriculture" provides readers with contents including: Chapter 1 - Application of GIS to integrated pest management on U.S. fish and wildlife service land; Chapter 2 - Nitrogen management in sugar beet using remote sensing and GIS; Chapter 3 - Using Historical management to reduce soil sampling errors; Chapter 4 - Developing productivity zones from multiple years of yield monitor data; Chapter 5 - Site-specific weed management in growers’ fields, predictions from hand-drawn maps;...
115p daonhiennhien 03-07-2024 1 1 Download
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This study aimed to investigate the levels of contamination of potentially toxic trace elements in the soil of Dong Nai Province, Vietnam. To achieve this, the Instrument Neutron Activation Analysis (INAA) method was employed to measure the concentrations of five potentially toxic trace elements, including manganese (Mn), arsenic (As), chromium (Cr), antimony (Sb), and zinc (Zn), across 30 soil samples collected from the region.
11p visergeyne 18-06-2024 1 0 Download
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Polycyclic aromatic hydrocarbons (PAHs) in paddy soil around Nam Son landfill area, Ha Noi, Viet Nam
In this study, soil samples around Nam Son municipal waste disposal site were collected and analyzed 16 typical PAHs in order to determine the pollution level for cropland and the PAHs origin in this area. To the best of our knowledge, this is the first study on organic matter pollution such as PAHs in paddy soil near the Soc Son solid waste treatment complex.
14p viamancio 04-06-2024 2 0 Download
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In ebook "Nanoparticles in the water cycle: Properties, analysis and environmental relevance" the first section deals with basic aspects of nanoparticles and their function in air, water, soil and water treatment. The second part contains examples for the application of advanced instrumentation for quantification and characterisation of nanoparticles with special respect to aqueous samples.
243p giangdongdinh 28-05-2024 1 1 Download
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In this study, a series of one-dimensional oedometer laboratory creep tests were conducted on samples subjected to cyclic loading in order to study the effect of overconsolidation ratio (OCR) and duration of preloading on the secondary consolidation coefficient of the soft clay.
12p viohoyo 25-04-2024 5 2 Download
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Ebook "Analytical chemistry applied to emerging pollutants" addresses the highly relevant subject of emerging pollutants, which are especially alarming since most of the available treatment technologies are unable to degrade them. It discusses the sources of these pollutants and their fate in the environment, and the main tools available for their analysis. It also describes the representative environmental matrices (air, soil and water) and appropriate analytical methods for each matrix.
128p tracanhphuonghoa1007 22-04-2024 5 2 Download
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The study aims to assess the quality of soil and water environment in Phu My Species and Habitat Conservation Area, Kien Giang province. Water samples were collected at 16 sites in 7 different habitats (Lepironia articulata - Eleocharis dulcis habitat, Lepironia articulata - Melaleuca cajuputi habitat, Lepironia articulata - Ischaemum rugosum habitat, Eleocharis dulcis habitat,...
9p viohoyo 25-04-2024 2 2 Download
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Developing new biofertilizers has been an area of great interest in modern agriculture. This study focused on actinobacteria possessing high chitinase activity, biofilm formation, plant growth promotion, and antifungal activity. Two chitinolytic actinomyces strains, YSS-3.3 and YWS-5.1, were isolated from soil and chitin flake samples collected from Yok Don National Park in the Central Highlands, Vietnam.
10p vimarillynhewson 02-01-2024 2 2 Download
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Tomatoes and eggplants are foods that have a lot of nutritional values for humans. Applying farming methods to get good quality products such as being free of pathogenic microorganisms and free of heavy metals needs concerned. In this study, we analyzed cultivation soil and irrigation water samples around tomato and eggplant cultivating areas of farmers who used chemical fertilizers and pesticides.
4p vialfrednobel 21-12-2023 2 2 Download
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This study aims to evaluate the effect of different fertilizers on the growth and essential oil productivity of coriander and sand ginger in Vietnam. Nutritional parameters including total N, total P, total K, humus and organic matter concentrations of the cultivated soil samples were suitable for the growth and development of crops.
8p vialfrednobel 21-12-2023 6 2 Download
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This study was conducted to investigate the residual of Chlorpyrifos (CPF) in coffee growing soil at Lam Ha district, Lam Dong province. Fifteen soil samples were collected from coffee intensive gardens in the Phi To, Nam Ha, Me Linh and Dong Thanh communes of Lam Ha district during the February 2023.
9p vishekhar 01-11-2023 1 1 Download
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The study aimed to isolate oil-degrading bacterial strains from the contaminated soil of Cam Ranh, Khanh Hoa, and develop a robust indigenous bacterial consortium for bioremediation of crude oil pollution. From a total of seven oil-polluted soil samples collected in Cam Ranh, after 3-fold enrichment in liquid mineral salt medium containing 5% crude oil mixed in diesel DO (w/v), 7 bacterial isolates were achieved.
8p giangnhanly 02-10-2023 4 2 Download
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This article presents the method for training a deep artificial neural network (DANN) for regression analysis; this method is based on the generalized delta rule. To illustrate the rule, a DANN with two hidden layers is used. The model’s construction is described in the form of mathematical equations. Subsequently, a DANN program is written in Visual C# .NET. This program is tested with the task of estimating the shear strength of soil samples.
8p nhanchienthien 25-07-2023 7 4 Download
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This paper uses XGBoost to predict bearing capacity of concrete piles. The proposed model is trained and tested against a dataset of 472 samples collected from static load tests in Vietnam. The results indicate that the default XGBoost model consistently outperforms the Deep Neural Network (DNN) regression. XGBoost is a suitable tool for engineers to predict pile bearing capacity.
9p nhanchienthien 25-07-2023 9 3 Download
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Continued part 1, part 2 of ebook "Reliability and statistics in geotechnical engineering" provides readers with content including: site characterization; classification and mapping; soil variability; spatial variability within homogeneous deposits; random field theory; spatial sampling; search theory; reliability analysis and error propagation;...
305p dieptieuung 19-07-2023 10 3 Download
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Part 1 of ebook "Water in road structures: Movement, drainage and effects" provides readers with content including: water flow theory for saturated and unsaturated pavement material; measurement techniques for water flow; heat transfer in soils; water in the pavement surfacing; sources and fate of water contaminants in roads; contaminant sampling and analysis; water influence on bearing capacity and pavement performance: field observations;...
264p dieptieuung 19-07-2023 2 2 Download
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The pollution of heavy metals in ore mining areas is severe at present in Vietnam as well as in the world. Assessing the level and risk of contamination of arsenic (As) in the soil in the ore mining area is essential for environmental management.
9p viironman 02-06-2023 5 2 Download
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The radioactivity of nuclides and content of heavy elements in soil, water and air are commonly important criteria in the environmental assessment of the mining areas. The study within the years of 2016-2018 on radioactivity and heavy elements content in the water and air samples at Lai Chau Rare Earth project (belonged to Dong Pao rare earth mine area) is to support the environmental survey and assessment program running by environment agency to manage the individually environmental mining area.
8p vicedric 08-02-2023 7 4 Download
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To keep the accredited category for the gamma spectrometry test in our laboratory, the efficiency curves of a HPGe detector for soil sample in Marinelli geometry were determined by “efficiency transfer” principle via the ANGLE3 commercial software and Monte Carlo simulations via MCNP5 and GEANT4.
6p vicedric 08-02-2023 8 3 Download
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In this study, archaeobotanical data were gathered from the Early, Middle, and Late Bronze Age layers (2400–1200 BC) of the Tatarlı Höyük exposed in the 2011–2012 excavation seasons in the Ceyhan district of Adana Province were evaluated. In 8 trenches relating to these periods, archaeological contexts such as inside areas, hearths, ovens, middens, ceramic pots, etc., as well as contexts with carbonized plant remains were recovered by using dry and wet sieving methods, corresponding in total to 90 soil samples.
17p lyhuyenthu 31-01-2023 6 3 Download