Rock and water

Ebook "Threats to the quality of groundwater resources: Prevention and control" focuses on scientific and technological aspects of groundwater-resources assessment and surveillance. It describes relevant risks and investigates selected techniques for the monitoring and mitigation of the individuated threats to groundwater quality.

326p giangdongdinh 28-05-2024 2 1   Download

In porous aquifers, the central-to-sea cross-section highlights meteoric water dominance from rain and surface sources. Groundwater undergoes exchange-absorption with silicate minerals, enriching Ca2+ and Mg2+ (reducing Na+). Seaward, dissolution and leaching of salts in marine-origin sediments (mQ2, mQ13, mQ12-3, and mN22) prevail. The results of this paper provide necessary information for the effective management of groundwater quality.

12p dianmotminh02 03-05-2024 2 1   Download

Part 1 of ebook "Mechanics of residual soils (Second edition)" provides readers with content including: origin and formation of residual soils; microstructure, mineralogy and classification of residual soils; describing the engineering properties of residual soils as observed in situ; the mechanics of compaction and compacted residual soil; steady and unsteady flow of water and air through soils - permeability of saturated and unsaturated soils;...

167p dieptieuung 19-07-2023 7 2   Download

Part 1 of ebook "Building materials (Thrid revised edition)" presents the following content: principal properties of building materials; structural clay products; rocks and stones; wood and wood products; materials for making concrete-I cement; materials for making concrete-II aggregates; materials for making concrete-III water; materials for making concrete-IV lime; puzzolanas;...

260p damtuyetha 09-01-2023 10 2   Download

Seawater injection into chalk-reservoirs on the Norwegian Continental Shelf has increased the oil recovery and reduced seabed subsidence, but not eliminated it. Therefore, understanding rock–fluid interactions is paramount to optimize water injection, predict and control water-induced compaction.

8p vironald 15-12-2022 4 2   Download

The possibility of reservoir-triggered earthquake occurrence in the Huoi Quang and Ban Chat hydropower dam area has been assessed based on studying and analyzing the relationships between the reservoir-triggered earthquake occurrence and the following factors: (1) the types of rocks underlying the reservoir; (2) the oscillating reservoir loads on faults in the reservoir area;...

12p vipagani 24-10-2022 5 3   Download

(BQ) Ebook Principles of engineering geology: Part 1 presents the following content: Chapter 6 rock discontinuity analysis; chapter 7 site investigation; chapter 8 groundwater; chapter 9 stability of soil slopes; chapter 10 rock slope stability; chapter 11 ground improvement; chapter 12 water resources, reservoirs and dams.

731p runordie6 10-08-2022 6 1   Download

Kestanbol geothermal field is located in northwestern Turkey and is one of the highest temperature geothermal fields in the Biga Peninsula. In this study, one geothermal well, two geothermal springs, and two cold springs were monitored for one year in Kestanbol geothermal field to determine hydrogeochemical and isotopic characteristics. Additionally, any possible relationship between seismic activity and variations in the hydrochemistry of geothermal water was investigated.

22p tanmocphong 29-01-2022 14 1   Download

To improve the utilization rate of hot dry rock resources, it is necessary to recover the energy of geothermal tailwater and improve the net output work. An improved ammonia-water power cycle is proposed based on the Kalina cycle. Taking the geothermal parameters of the Husavik Power Plant in Iceland as the prototype (the water temperature of the geothermal well is 122°C, and the tailwater temperature is 80°C), the numerical simulation of the modified Kalina cycle is carried out by using Engineering Equation Solver software.

11p tanmocphong 29-01-2022 14 1   Download

The trace element (TE) content of oils is known to have a polygenetic character and to be inherited from an organic matter, surrounding rocks and from formation waters. The presence of some TEs indicates the involvement of the deep source, at least from the Lower Crust. However, these conclusions have a qualitative character. We present the results of the correlation analysis of TE content of oils with the chemical compositions of the Upper, Middle, and Lower Crust, with different types of organic matter, clays, and causetobiolites.

10p nguaconbaynhay11 07-04-2021 17 1   Download

The salinity is mainly due to the presence of saline ground water at shallow depths and frequent flooding and sea water intrusion in low-lying areas. The intrusion of seawater into aquifers can occur directly, but also occurs a number of complex geochemical processes such as mixing between aquifers, mobilization of salt water, water-rock interactions and anthropogenic pollution.

9p chauchaungayxua10 18-03-2021 12 1   Download

This paper reviews the mechanisms of oil release and the use of microbes and their metabolic products to enhance oil recovery. Alteration of oil/rock/water interfacial tensions properties and changes in flow behaviour assist the enhancement of oil recovery. Oil recovery can be improved by injecting gases and solvents or by stimulating their production by reservoir microflora in situ for reservoir repressurization and carbonate rock dissolution.

14p nguathienthan8 20-10-2020 14 1   Download

Enriched vermicompost preparation used Eisenia foetida vermiworm species and other additives (PSB, bacillus, rock phosphate) in it. The whole experiment was carried out at experimental station, Dr. RPCAU, Pusa and physical, chemical, enzymatic and biological properties were analyzed to ensure its quality aspect.

16p kethamoi7 26-08-2020 14 2   Download

Therefore, it is essential to find ways and means to increase the efficiency of phosphate rock either by using it alone or as a mixture of phosphate rock and water soluble P fertilizer. A field experiment was conducted during rabi seasons of 2013-14, 2014-15 and 2015-16 study the effect of various sources of phosphorus on yield, nutrient uptake and economics of groundnut (Arachis hypogaea L) under acid Alfisols of Odisha.

14p nguaconbaynhay7 15-08-2020 11 1   Download

Estimating water saturation is one of the main challenging aspects in reservoir characterisation. Good estimation of this parameter enables us to calculate reserve accurately. Hence, it is of great importance to estimate precisely water saturation based on hydraulic flow units of reservoir rocks. In this paper, a modified J-function was used and developed to determine the water saturation in the hydrocarbon reservoirs located in field A, Cuu Long basin.

7p kequaidan6 10-07-2020 23 0   Download

The alkaline lake Lonar is situated in buldhana District of Maharashtra, India. The lake is around 50-60 thousand years old and water is alkaline (pH 10.36). It is the third largest meteorite crater in basaltic rock in the world, with a diameter of 1,800 m. While Lake Bosmatvi in Ghana, has a diameter of 10,000 m and lake New Quebec in Canada with a diameter of 3,500 m.

9p nguaconbaynhay6 24-06-2020 11 1   Download

Thematic maps present information relating to spatial variations in the distribution of specific geographical features at a regional scale or across the entire basin. The spatial distribution of thematic maps aids in decision-making of management of resources. Different thematic maps generated for the Kinnerasani basin include watershed boundary, drainage network, slope map, landuse/landcover map and soil map with the help of Survey of India topographical map and Cartosat DEM. LULC map was developed using IRS P6 LISS III satellite data.

6p nguaconbaynhay6 23-06-2020 15 0   Download

Among the crop residues used for preparation of compost, wheat straw (WS) + urea (1.5 - 4.5 per cent) + rock phosphate (RP) (6 - 12 per cent) + Sulphur (S) (1 to 3% through gypsum) and shredded cotton stalk (SCS) + urea (1.5 - 4.5%) + RP (6 – 12%) + S (1 to 3% through gypsum) were found equally beneficial in improving the quality of compost. The pH of compost rises initially and further drop at the maturity of compost.

12p quenchua6 15-06-2020 11 2   Download

Groundwater is a dynamic and replenishable natural resource, but in hard rock terrains, availability of groundwater is of limited extent and is depleting in many areas due to its large scale withdrawal for various sectors. Groundwater recharge such as rainwater harvesting is essential in order to improve ground water level and quality. The main objective of the study is to identify suitable sites for groundwater recharge in the study area through Geospatial technology. To attain this Remote Sensing Technology is the good tool in mapping such geological features related to groundwater recharge.

6p caygaocaolon2 14-03-2020 12 0   Download

The aims of this study are to evaluate (1) the effectiveness of Rock and Water on socio-emotional adjustment (i.e., psychosocial wellbeing, sexual autonomy, and resilience) and social safety (i.e., perceived social security in the classroom, aggression, and bullying) and to examine (2) moderators and (3) mediators of its effects.

12p viriyadh2711 19-12-2019 11 1   Download