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

Why are there two reduction peaks in my cyclic voltammogram?

When I measured the cyclic voltammogram of palladium in the pbs solution, two reduction peaks appeared. This did not match the literature I saw. Why? And how can I find the possible reaction...

20 February 2021 2,486 3 View

Lipoic acid with a terminal amine causing gelation?

I am wondering if anyone has made Lipoic acid with a terminal amine and has seen gelation? Is there anyway around this or a way to get it back into solution?

29 October 2020 2,839 1 View

How to calculate the activity of a catalyst in mol/kg/hr?

Hi all, I have done a CO oxidation reaction by using Palladium impregnated activated carbon based catalysts. The catalyst was showing the 100% conversion for a duration of 3-5 hrs. How can I...

28 September 2020 997 2 View

Why don't my isolated mouse cardiomyocytes contract?

I'm trying to isolate left ventricular myocytes from wildtype C57BL/6 mice. Currently the isolation step seems to be going okay - usually I get >50% viability of cells (although this is...

16 September 2020 4,335 3 View

What colour does your Pd(PPh3)4 catalyst have during and after C-C coupling. Especially in Stille-reaction?

Hello, I am working on a C-C coupling of a strong electron accepting aryl-cl and Bu3Sn-Benzonitrile. I was able to synthesize my product but the yield is very low. I always have a big residue/...

10 August 2020 6,762 8 View

Is the velocity of electron in materials really relativistic?

Velocity of the electron in the metal is ~ 10^6 m/S which is 1/300 the speed of light. So, If the electron's velocity is not relativistic, then how a moving electron in a material can experience...

23 July 2020 755 3 View

Can Palladium (Pd) be a good choice as a working electrode for glucose electrochemical sensing?

If the answer to the question is yes, is it any reactions between Glucose solution (electrolyte) and Pd that might happen?

15 June 2020 7,009 1 View

Which procedure should I perform in an azo coupling reaction where histidine and tyrosine are used as the coupling agent?

I used L-Histidine and L-Tyrosine as coupling agent for azo coupling reaction and sodium hydroxide solution to adjust pH. Although color change was observed during the coupling, no precipitate...

26 May 2020 8,342 7 View

Is it natural to observe shifts in spin-orbit splitting values of an element for different stoichiometries or compounds containing that element?

Hello, In XPS measurements, I am observing consistent shifts in spin-orbit splitting values for different oxides of the same base element. I'm being told by many that this is not possible, that...

25 May 2020 4,389 3 View

How to extract Pd from Pd(NH3)4Cl2 solution ? Which electrolysis parameters should I choose ?

Hello everybody, I have a solution of Pd(NH3)4Cl2 that I got by refining spent leaching solution of gold. I did many cycles of ammonia (dissolution)/ chlorhydric acid (precipitation) and I got...

23 April 2020 3,048 1 View