Is renewable energy plants really good for the environement ?

I know that renewable energy plants generate a clean electric power with no emissions, but manfacturing pv cells and wind turbines using nuclear of fuel based electric power raise a problem, also...

12 January 2019 9,498 10 View

3D simulation of solid mechanic

Hello, worldI've run a 3D simulation of solid mechanic when I'm trying to use contact pairs.In the model I have three parts, the first is constrained, the second is the membrane which is in...

16 May 2017 6,522 9 View

Is Back to back VSC HVDC is consider as a FACTS device ?

03 January 2016 9,005 2 View

Quantify color changing of polymer due to aging process?

I need your suggestions. Is there any way to quantify color changing (ex: degree of brightness) of polymers after being aged ? (The attached image for example) Thank you.

01 January 1970 7,548 7 View

Stats to compare recharge of groundwater and determine if precipitation has more of an effect on groundwater levels before or after resto??

Hello all, I am looking for ways to compare recharge of groundwater and determine if precipitation has more of an effect on groundwater levels before or after restoration? My data set contains a...

08 February 2021 7,887 5 View

What is the best geophysical machine or device for detecting groundwater?

what is the best geophysical machine or device for detecting groundwater? Are there any machine that can detect the depth and the type of water? do I have to buy one machine or more than one to...

26 January 2021 6,149 15 View

What are possible factors influencing the isotope-based hydrograph separation in river confluences?

When performing hydrograph separation (EMMA method) with isotope tracers in river confluences (natural large basin), we found that the contribution of each end member sometimes exceeds the...

20 January 2021 8,403 5 View

Is there any low-cost filtering system (or other tech.)to lower the salt conc. (salinity) of surface/groundwater for large scale agricultural system??

The available water (surface and groundwater) is highly saline (6-20 dS/m). It is required to produce crop (moderately saline tolerant, up to 6 dS/m). Is there any low-cost filtering system (or...

18 January 2021 5,015 3 View

Which LCIA method is most suitable for assessing the impacts of nitrate leaching in groundwater (eutrophication )?

The eutrophication of groundwater by nitrate leaching is major environmental problem in Germany, especially in areas with intensive agriculture and high N-fertilizer inputs. In addition there are...

16 January 2021 5,182 7 View

How to estimate the ground water contribution while calculating the water use efficiency of a crop?

Ground water contribution is important while estimating the water use efficiency for a crop for calculation of ET without the use of Lysimeter

22 December 2020 1,254 2 View

Can anyone kindly explain what is the best method to determine the statistical correlation between two raster maps in same pixel size?

I need a method to determine statistical correlation between two GIS based raster maps. Eg. Correlation between Soil Erosion rate map (Raster) and spatial distribution map of any groundwater...

04 December 2020 9,920 11 View

How to know if 87Sr/86Sr is reliable for Sr isotope chemostratigraphy in marbles?

I am currently looking for parameters to know if 87Sr/86Sr data is reliable for chemostratigrahy in marbles, and/or parameters to know if those marbles have had some post-depositional...

30 November 2020 9,032 8 View

Can we assume partially saturated soil conditions during Vacuum Consolidation Method?

Normally we assume that the zone of vacuum consolidation is fully saturated. But I need to find out what effect the existing groundwater table has on effectiveness of Vacuum consolidation method....

30 November 2020 2,978 1 View

How to calculate the analytical solution for the HYDRUS-3D model simulation of water and salt movement in soil?

Suppose an agricultural field with uniform soil texture and salinization. The groundwater depth is 20 meters, assuming that the depth of the groundwater and the concentration of salts remain...

25 November 2020 2,382 4 View