Is it possible to use 100% Ethanol as mobile phase for C18 or any reversed phase columns?

I want to separate 2 compounds on HPLC, and I have made the preliminary studies on TLC using reversed phase plates and 100% ethanol as mobile phase which achieved complete separation. Now I want...

13 August 2020 2,229 3 View

Is there any different in phage precipitation with PEG 8000 and PEG 6000 ???

Can the moleculer weight of PEG (8000 and 6000) cause a noticeable effect in phage precipitation???

22 December 2018 531 3 View

Is there a way to extract vanilla oil?

I tried distilling vanilla beans (hydrodistillation) but did not get any oil after 4 hours. However, the hydrosol had the same odor of vanilla. Is there a way to get the vanilla oil? Thank you!

07 October 2018 7,400 3 View

I need the Diabetes Quality of Life Questionnaire for my project, where can I find it?

The main objective of my project is to assess the psychosocial aspect of the diabetic patients especially type 1 (adolescent) . Do you have any suggestion on how can I assess this issue?

22 June 2018 1,167 3 View

Why sandalwood oil is prepared from the heartwood and not the sapwood?

Sandalwood oil is extracted from the heartwood. Is there a reason for or benefit from producing the oil in the heartwood?

13 February 2018 9,172 1 View

What are the factors required to be considered for wsn using on-demand query based apporach ??

20 April 2016 8,149 5 View

How to know the protons (H+) concentration inside a fully hydrated Nafion 117 membrane?

I am modeling a Nafion 117 proton exchange membrane and I want to determine the concentration of hydrogen ions inside this membrane when it is fully hydrated.

21 March 2016 6,637 1 View

How can we make a hybrid dynamic system for fisher KKP equation?

discrete time piecewise smooth system continuous time piecewise system

15 November 2015 4,562 2 View

What is the best way to fractionate a methanolic extract?

Is fractionation by simply shaking with solvents of increasing polarity successively sufficient or is it needed to always have 2 immiscible solvents?

31 October 2013 8,863 32 View

Top Ten Learning Algorithm?

01 January 1970 4,217 33 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

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

What is the most Operating System (OS) which can be INSTALL on Tiny hard devices like Raspberry Pi (RPi) hardware ?

I'm targeting to deploy a mesh network and manually configure MANET routing protocols. I'm preparing scenarios, architectures, and hard devices needed to do that. Are there some step-by-step...

03 March 2021 1,931 5 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

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 3 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View