What solvent can I used for Paal Knorr reaction between 6-amino hexanoic acid and 2.5 hexanedione?

I am try to make the Paal Knorr reaction between 2.5 hexnedione and 6-amino hexanoic acid, my problem is type of solvent to use, because 6-hexaminohexanoic acid is soluble in water but I am not...

02 March 2021 4,443 2 View

Measurement invariance of a bifactor model with categorical indicators. What is the recommended approach?

I have a bifactor model with categorical indicators: 4-option Likert-type items. One of my research objectives involves testing measurement invariance between two groups. I have been doing it as...

16 December 2020 4,601 2 View

What is the significance of hysteretic energy in RC member?

How can we use the energy demand of beams and columns or other structural memebers in real fileld? What are the applications of energy based design method?

25 November 2020 7,433 1 View

How to concentrate a PCR product before sequencing?

Hi everybody, I'm planning to sequence several phytoplasma strains by doing a nested PCR and cloning the resulting amplicons. Standard phytoplasma universal primers pairs will be used (P1/P7...

08 November 2020 2,155 4 View

Snowballing in Systematic Literature Reviews. How to ensure transparency?

Dear Ladies and Gentlemen Im doing a Systematic Literature Review for my thesis. I already identified the articles for my review through a database. However there are many articles that weren't...

04 October 2020 7,438 3 View

Discrepancy protein levels and receptor expression?

I measured the expression of a protein that is a receptor in a panel of cell lines. When I measured the protein levels by Western blot the protein levels were about the same in all cell lines ,...

09 September 2020 6,671 3 View

No title

24 July 2020 9,872 3 View

Could someone suggest good journal/article realted to energy dissipation through hysteretic behaviour?

Currently I am working on " Quantitative Assessment of dissipated energy from structural components correlation with deformation under seismic loads in low rise building using Perform 3D".

13 July 2020 3,330 2 View

Who decides if a paper is submitted or not?

If one of the coauthors of a research paper does not contribute intellectually but financially only to a project, is he/she entitled to call off the submission of the paper?

10 May 2020 2,851 7 View

Does anyone know home range databases for mammals and birds?

I am conducting a study using wildlife traits, however, home range data is limited. Pd. I have already used data from Tamburello et al. 2015, but I still have lots of species without home range data.

30 April 2020 6,608 2 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

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 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

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

No title

01 March 2021 3,905 5 View

Which is suitable for use with Python? MySQL or SQL Server?

Which is suitable for use with Python? MySQL or SQL Server? What is your suggestion?

01 March 2021 3,422 3 View