What is suitable temperature at reaction mixture of lipase activity assay?

I use para nitrophenyl palmitate substrate with tris buffer ph 8... i read many temperature for Yellow color of para nitro phenol production.. 37 and 50 and 40 at water bath ... I confused as i...

04 February 2021 9,100 5 View

What is the difference between SEM and TEM and between FTIR and EDX in soil and plant?

If I want to know the changes (for example in plants or soils) as affected by specific substance on nano substance; when I use SEM or TEM and why? As well, when I use FTIR or EDX and why also? Is...

28 January 2021 5,070 9 View

Rmse in lstm when forecasting time series?

iam working on long memory time series data and i use lstm neural networ to train data and i want to understand how rmse is calculated is it calculated in each iteration separately or in each...

23 December 2020 6,740 4 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

I saw sparkles in my samples?

i am trying to dope boron in graphene oxide , and after i take out my samples from the oven i put them in the microwave for 40 sec , and i saw sparkles . and fume also i couldn't understand why

16 November 2020 6,852 5 View

I am looking for efficient texture analysis software for MRI images analysis with free acess?

i am looking for efficient texture analysis software for MRI images analysis with free access?

09 October 2020 3,737 2 View

What is the alternative test that can be used instead of ANCOVA when the Homogeneity of regression slopes doesn't meet?

I have Pre test as a (covariate variable) and post test as a (dependent variable) and the treatment for the experimental group and the control group. and the assumption of Homogeneity of...

21 August 2020 7,196 3 View

What if find that the reviewer goes through your paper just to reject it?

What you should do if you found that one of the reviewers goes through your paper just to reject it and most of his comments are irrational and not constructive. Finally, he rejected the paper...

20 April 2020 5,336 51 View

Giemsa stain preparation tips, for chromosomes' staining, any advises?

Can any one advise me about the best protocol for Giemsa stain preparation? it gives me faint blue color not the ideal purple color, that makes the investigation difficult and the color is not...

16 March 2020 6,656 3 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View