Essays about: "Soil water content"

Showing result 21 - 25 of 213 essays containing the words Soil water content.

1. 21. Geomechanical testing of non-hardening grout : for determination of flowability and strength properties

   University essay from Luleå tekniska universitet/Geoteknologi

   Author : Axel Barrdahl; [2022]
   Keywords : Non-hardening; Grout; Embankment dam; Repair; Fall cone; Uniaxial Compressive Strength; UCS; Triaxial;

   Abstract : Due to an increasing amount of aging tendencies in Swedish embankment dams, failures such as internal erosion has become a more common problem. Internal erosion is a phenomenon where certain soil material within the embankment dam is removed, often over a longer period of time. READ MORE

3. 22. The role of bed sediments for sorption of phosphorus in remediated ditches in Sweden

   University essay from SLU/Dept. of Soil and Environment

   Author : Linus Holgersson; [2022]
   Keywords : Phosphorus; Two-stage ditch; Equilibrium phosphate concentration; Phosphorus retention; Eutrophication; Soluble reactive phosphorus;

   Abstract : Human activities have increased nutrient losses to agricultural ditches and streams, including phosphorus. Phosphorus leakage leads to a worsening of water quality in downstream ecosystems, including lakes and seas. In addition, higher phosphorus concentrations lead to eutrophication, which negatively affects aquatic systems. READ MORE

4. 23. Soil Moisture Sensing in Mining Waste Rock: Comparing Calibration Curves of Multiple Low-Cost Capacitance Sensors and a Single TDR Sensor

   University essay from Uppsala universitet/Luft-, vatten- och landskapslära

   Author : Rasmus Jørgensen; [2022]
   Keywords : Mining waste rock; soil moisture content; volumetric water content; sensor calibration; Campbell Scientific moisture sensor; Arduino moisture sensor;

   Abstract : Measuring soil moisture content (SMC) in mining waste rock is important for assessing and modelling hydrological processes which influence pollutant release. Here, an experimental setup containing mining waste rock is established to compare the performance of 4 Arduino capacitance moisture sensors to one single Time Domain Reflectometry (TDR) sensor. READ MORE

5. 24. Bearbetningsmetoders påverkan på markorganismers aktivitet i jorden : i perenna odlingar samt i odlingssystem med mellangrödor

   University essay from SLU/Dept. of Biosystems and Technology (from 130101)

   Author : Jenny Olofsson; [2021]
   Keywords : markorganismer; respiration; organiskt material; odlingsmetoder; biologiska processer; kemiska processer och fysikaliska processer; perenna odlingssystem; mellangrödor; klimatförändringar; microbial activity; respiration; organic matter; soil tillage methods; biological processes; chemical processes and physical processes; perennial crops; conservation agriculture; intermediate crops; climate change;

   Abstract : Klimatförändringarna, som både påverkat och påverkar vår planet, kräver att mänskliga aktiviteter förändras till mer resurssnåla och systemeffektiva processer. I dessa processer bör markens bördighet vara det centrala, eftersom en bördig mark kan generera stabila skördar och bidra till en långsiktigt hållbar matförsörjning. READ MORE

6. 25. Evaluation of distribution coefficients (KOC and Kd) for per- and polyfluoroalkyl substances

   University essay from Linnéuniversitetet/Institutionen för biologi och miljö (BOM)

   Author : Nika Nordanstorm; [2021]
   Keywords : PFAS; PFOS; organic contaminant; sorption; Kd; KOC; distribution coefficient; solubility; mobility; environmental fate; environmental transport; contaminated site; hydrophobic interaction; electrostatic interaction;

   Abstract : The dominating factors affecting sorption of per- and polyfluoroalkyl substances (PFAS) remain subject of research and debate. Traditionally, distribution coefficients (e.g. READ MORE