Debaditya Gupta

12 Questions 3 Answers 0 Followers

Questions related from Debaditya Gupta

How to make soil water characteristic curve using centrifuge?

We have no access of pressure plate apparatus

23 July 2024 3,446 2 View

What is the degassing temperature and time for biochar for BET surface area analysis if TGA is not possible?

Since BET and TGA both are very costly instruments and many places the facilities are not available (for large number of samples) hence a threshold degassing temperature and time is preferable

17 July 2024 8,064 2 View

How to get discharge capacity of a bole well?

No data regarding radius of influence is provided and no pumping test data available.

11 July 2024 7,117 0 View

What is the range of penalty selection for constrain in constrain optimization problem (like constrain PSO etc.)?

Also in case of multiple constrain how to decided the penalty of each constrain? Is there any universally acceptable rule for standard reputed journals?

08 May 2024 4,282 0 View

Why most of the research paper give pseudo first order and pseudo 2nd order kinetics and then isotherm of Langmuir, Freundlich?

The isotherms needs qe from different ce, in that case for both pseudo 1st and pseudo 2nd order there should be separate Langmuir and Freundlich isotherms. If in case of isotherm the research...

11 April 2024 1,540 1 View

Whether he amount of biochar doses uses for soil physics and geo-techniques is un survival for plants and economically infeasible?

Because the soil chemistry, agriculture, microbiology people recommends biochar application (5 to max 30 ton/ha) whereas soil physics, geotech people uses 5%, 10% by weight of biochar (nearly if...

03 October 2023 2,615 2 View

How to measure bulk density of a biochar added soil in laboratory (Kindly provide reference of a peer reviewed SCI indexed journal)?

(Kindly provide reference of a peer reviewed SCI indexed journal)

23 September 2023 4,213 0 View

How to analyze multiple change point in a time series (statistically) since Pettit's change point test is only applicable for single change point?

Kindly provide with references

29 August 2023 7,168 2 View

How to determine bulk density of a powdered and disturbed soil? With standard reference?

In powdered food material, the bulk density is measured by taken the food material in a cylinder and weight / (volume occupied by material in cylinder) while for soil it is measured by core soil...

26 August 2023 2,614 2 View

How to give ANN with multiple outputs as an objective function in MATLAB to optimize the input parameters by any optimization tool like GA?

That is for multi objective optimization and also for where some output need to be increased some need to be decreased

03 April 2023 10,001 0 View

How to find normal distribution value without using any table and any without any computer tool?

Like what is the background logic (mathematics) of NORM / NORMINV / NORMINV.DIST etc. Functions in excel or any other tool Is it the normal distribution function has solved numerically ?...

06 November 2022 9,282 0 View

How to select PSO parameters like inertia weight (w), velocity update factor for particle and global (c1 and c2) ?

standard references need to be provided some papers it was written that w lies from wmax=0.9 to wmin=0.4 and changed with iteration c1=c2=2, some paper c1=1.5, c2=0.5 Which to choose

21 March 2022 3,453 4 View