Soil characteristics
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The aims of this research are to find out spatial and temporal infiltration characteristics in two forest types. Basing on the result of this research, the researchers would find out the correlation between Acacia and Cinnamon tree with infiltration rate of soil and the effects of two kinds of trees in process of forming overland flow and erosion.
14p viamancio 03-06-2024 0 0 Download
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This study aims to evaluate the effect of fire on soil properties at Zone A5, Tram Chim National Park, Tam Nong district, Dong Thap province. Findings indicated that soil type was acid sulfate, soil structures were clay, clay-silt and silt-clay. pH was low while moisture was high. Electrical conductivity and bulk density were in the tolerance range for the Eleocharis community.
9p viohoyo 25-04-2024 5 2 Download
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Main objectives of this study is including: (1) characterize infiltration's characteristic of soil in Eucalyptus Forest; (2) point out the impact of Eucalyptus’s root system on infiltration process; (3) identify the correlation between infiltration rate and other factors.
12p vilarry 01-04-2024 7 1 Download
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Study on the antagonistic activity against two pathogenic bacteria in humans (Staphylococcus aureus and Streptococcus pneumoniae) of the Streptomyces MIP_L26 (Called MIP_L26), isolated from the soil in the root zone of the May Chang tree; to investigate the biological characteristics of MIP_L26.
6p viohoyo 02-04-2024 3 2 Download
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This paper studies the damping characteristics of the soil foundation under a building concerning the Soil-Structure Interaction (SSI). By considering a multi-story building resting on a piled raft foundation as a typical SSI system, subjected to an earthquake (i.e., Chi Chi earthquake, Taiwan 1999), the timedependent responses of specified locations in the foundation are recorded and analyzed, both in-time domain and frequency domain.
12p vibego 02-02-2024 2 1 Download
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The settlement was measured with 24 hour-period for each increment and based on which, consolidation characteristics including the time to the end of primary consolidation (EOP) determined by Log Time method and 3-t method and then, the coefficient of secondary consolidation were observed for both undisturbed and disturbed specimens.
10p visystrom 22-11-2023 7 3 Download
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Gia Lai has great potential for developing agricultural production, and it is home to a large crop industrial material area in Vietnam. It boasts nearly 100,000 hectares of coffee and nearly 90,000 hectares of rubber. The area has immense potential to develop its agricultural production due to its unique characteristics of soil and climate, which can support a rich diversity of plants and animal with high economic value.
7p vispacex 16-11-2023 7 2 Download
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The purpose of this paper is to present and analyze the characteristics of the corrugated steel culvert to see its superiority and to investigate backfill height cases to investigate the bearing capacity of the culvert. It is known that soil cover depth influences the obtained values of internal forces, the displacement and stress under nomal load conditions.
10p vifriedrich 06-09-2023 4 3 Download
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The obsevation from experimental results indicates that: (1) interface shear behavior between well-graded coral soils and steel structure follows the strain hardening rules; (2) the magnitudes of friction resistances between two materials are related to the gradation and grain size of coral soils, for coral sand limit sliding displacement is around 1mm with interface friction angle of 27.9o while for coral sandy-gravel these values are 2-3mm and 32.
8p vifriedrich 30-08-2023 7 3 Download
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Ebook "Practical problems in soil mechanics and foundation engineering - Volume 1" contains example problems with detailed step-by-step solutions. The text emphasizes the application of theoretical soil mechanics to geotechnical engineering. Chapters provide example problems and solutions on the physical characteristics of soil, water in the soil, settlement calculations, plasticity and shear strength, plastic equilibrium, and interpretation of in-situ tests. Civil engineers and civil engineering students will find the book highly useful.
294p dieptieuung 19-07-2023 8 4 Download
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This paper presents the experimental study on onedimensional compressibility behavior, soil water characteristic and soil shrinkage behavior of slurry Amberger kaolin. Soil water characteristic curve (SWCC) (Sr-ψ) was determined using conjunction between SWCC (w-ψ) and soil shrinkage curve (w-e).
4p vifalcon 16-05-2023 4 3 Download
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The research proves that the mountainous province Kon Tum has characteristics of highland climate with the annual average rainfall than 1.800m and thus, is potentially facing with strong and very strong erosion concentrating mainly at some highland districts.
8p vidoctorstrange 06-05-2023 3 2 Download
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The bacteria capable of fixing atmospheric nitrogen were isolated from cassava cultivated soils of Vietnam. The potential isolates were identified by analyzing the 16S rRNA gene and by morphological, biochemical, cultural characteristics. The selected isolates were assigned to the species Bacillus sp. DQT2 M17, Bacillus subtilis DTAN6 M17, and Bacillus megaterium DSHB I8.
9p vicaptainmarvel 21-04-2023 5 2 Download
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The article presents predicting land subsidence in the influence of external load such as pile foundation, increased load due to construction or change of transport infrastructure to twin tunnels to analytical and numerical methods.
4p viargus 20-02-2023 2 1 Download
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The defoliation and fruit characteristics of natural Castanea sativa Mill. forests were annually monitored between 2014 and 2016 in İstanbul, Turkey. The soil and forest floor properties were also investigated and evaluated according to the stand development stages. Comparisons were made with ANOVA and Tukey HSD tests; the relationship between fruit yield and the properties of the soil and forest floor were tested with correlation analysis; and allometric regression models were developed for fruit yield.
14p lyhuyenthu 31-01-2023 6 3 Download
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World population is increasing at an alarming rate, and crop cultivation on marginal lands has emerged as an alternate option to feed the burgeoning population. However, marginal lands are characterized by poor soil health and other undesirable characteristics resulting in low crop production and less economic returns. Interest in the application of superabsorbent polymers (SAPs) for marginal lands has been increasing.
15p lyhuyenthu 31-01-2023 7 1 Download
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The study "Biochar mitigates salt stress by regulating nutrient uptake and antioxidant activity, alleviating the oxidative stress and abscisic acid content in cabbage seedlings" was conducted as factorial completely randomized design with two factors; salinity levels (0 and 150 mM NaCl) and biochar doses (weighed at the rate of 0%, 2.5%, and 5% by soil weight). Growth parameters such as stem diameter, leaf area, shoot fresh weight, root fresh weight, shoot dry weight, and root dry weight of cabbage seedlings treated with 150 mM NaCl were lower than the control.
10p lyhuyenthu 31-01-2023 6 2 Download
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Terzaghi’s 1D consolidation theory is commonly used for evaluation of consolidation characteristics of soft soils. Several simplifying assumptions have been made to resolve differential equation for one-dimension consolidation. This paper presents a generalized theory for onedimensional consolidation of soft soil with variable compressibility and permeability.
5p vijaguar 16-11-2022 9 3 Download
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Part 1 of ebook "Elements of the nature and properties of soils (Third edition)" provide readers with content about: the soils around us; formation of soils from parent materials; soil classification; soil architecture and physical properties; soil water: characteristics and behavior; soil and the hydrologic cycle; soil aeration and temperature; the colloidal fraction: seat of soil chemical and physical activity;...
325p hanlinhchi 11-11-2022 13 3 Download
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The main findings included: (1) Total time for one process from harvesting to planting new forest was nearly 30 days. Both factors of vegetation and soil properties changed during four stages; (2) The infiltration rate of all locations in all stages followed the trend of decreasing after harvesting, burning, and recovering after planting new forest.
12p vilamborghini 12-10-2022 5 3 Download