Hi i want to ask that in order to find out LC 50 (96 hours) of particular toxin for fish. Should we keep the animals with food or without food?

if we expose the fish after acclimatization to particular toxin in order to find out LC 50 (96 hours).Should we keep the fish off feed or with feed for that duration. Some literature show that...

24 February 2021 357 2 View

How COVID-19 has affected mental health?

The pandemic has led to depression and anxiety and its negative effects shouldn't be ignored. However, it has also led some people to become more resilient! What do you think? Thank you.

21 February 2021 4,733 19 View

Is There are any idea to achieve H NMR signals for swollen compound ??

the samples are not completely soluble - just swelled the solvents that's mean the sample may be partially soluble any suggestion, please

16 February 2021 8,801 3 View

Pseudo random number generator in Matlab code ?

i want to implement pseudo random number generator in matlab ...i request to every one if someone have code these PRNG share with me SplitMix Permuted Congruential Generator (PCG) Random...

14 February 2021 6,828 7 View

Please ,How can I correct this kind of error?

27 January 2021 4,815 5 View

What are the standard parameter values of the commonly used classifiers?

What are the standard parameter values of the commonly used classifiers such as Support-vector machine, k-nearest neighbors, Decision tree, Random forest?

06 January 2021 6,940 7 View

PDF of a Book?

Can anyone provide me the PDF for Distributed Energy Resources in Microgrids (Integration, Challenges and Optimization)?It would be really helpful

27 December 2020 8,015 3 View

Simulation of Smart Grid?

Somepne please help me where to learn the simulation of Smart Grid on YouTube or other bookr esources?

22 December 2020 421 3 View

Doping of r-GO?

if the percentage of doping Au into rGO is too small 1~10%, is it not enough to prevent restacking of r-GO in xrd results, rGO peak appeared at 22.2 and also the peaks of gold nanoparticles so...

21 December 2020 6,091 3 View

XRD peaks for gold nanoparticles ?

is the concentration of gold salt that were added will affect on the peaks appeared. i added a very little amount of gold salt to dope graphene oxide and not all the peaks that proved the...

17 December 2020 9,275 3 View

Suppose we have a banana seller cart consisting of 4 wheels, weighing about 300 kg. How much torque motors are needed to pull of push it electrically?

I am thinking of electrifying the street food carts while harvesting energy using solar panels on top.

22 February 2021 4,323 3 View

What is the reference value of THD in BLDC MOTOR speed control ?

i used to control EHO+ANFIS to MRPID to Landsman converter for bldc drive i got 7% but some of them are telling IEEE standards are < 5% is it correct for Drives ?

07 February 2021 5,892 1 View

What percentage torque ripple exists in electrical motors used in electric vehicles ?

I am trying to understand the significance/percentage of torque ripples that exist in electrical motors (under operating conditions) that are used in commercial electric vehicles. If someone could...

15 January 2021 5,691 3 View

Can we control the position and vibration, simultaneously, of a flexible link with a tip mass using only the actuator's input?

This is a boundary control problem of a hybrid ODE-PDE system. The system consists of an actuator, a flexible link fixed to the actuator, and a tip mass at the free end of the link. In most...

13 January 2021 8,050 2 View

Why am i getting a negative torque in ansys fluent for a vertical axis wind turbine?

I am trying to simulate a vertical axis wind turbine of darrieus model and i am getting a negative torque. I have followed frame motion, relative to adjacent cell method, and solution method as...

28 December 2020 1,170 3 View

Gear reduction for back-drivability of a motor?

Hi everyone, Does anyone know up to what reduction ratio of gear does a motor remain back-drivable? I want my robot to have safe interactions with the environment and other humans. Can you give a...

26 December 2020 7,142 3 View

How do I calculate the torque required for linear motion?

23 December 2020 5,064 3 View

How can the Compression Stress on a membrane electrode assembly be calculated from the torque on the bolts of a proton exchange membrane fuel cell?

I'm trying to calculate the compression stress on the fuel cell components so that I can determine the porosity of the diffusion media as in the following paper: R. W. Atkinson, Y. Garsany, B. D....

11 November 2020 2,430 3 View

No title

07 November 2020 6,943 4 View

What is the relationship between the type of material(ex: steel, iron etc.), thrust and torque?

If I am drilling through bars of different material(ex: iron, steel etc.) of the same thickness and under the same conditions of drill operations(feed rate and rpm), how will the torque and thrust...

06 November 2020 4,498 3 View