How to set spring constant for umbrella sampling in GROMACS?

Hello everyone, I'm new to gromacs and also new to umbrella sampling, so I'm following Justin's tutorial http://www.mdtutorials.com/gmx/umbrella/index.html ; On the umbrella sampling stage, I'm...

20 February 2020 1,781 3 View

Minimum distance between ITRs in AAV for efficient transgene expression?

I'm just trying to express a very small transgene by transfecting cells with a plasmid coding for the recombinant genome of AAV2. I have different constructs with different promoters, and there is...

17 July 2018 5,903 6 View

Hi, could anyone give me some advice to clean the glassware from the excess of polymer urea-formaldehyde ? Thanks

The cleaning of the glassware after the synthesis of PUF particles is very difficult and almost impossible to remove completely the polymer attached to the walls, neither with acids, neither NaOH...

14 May 2017 5,577 3 View

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Hi, Some weeks ago I sent some paraffin blocks and sections (mouse tissues from a very important experiment) to another lab and just today I was informed that the person who received the package...

03 January 2017 6,247 6 View

Comparison of goodness-of-fit measures between MPLUS and LISREL. Why does the value of CFI, using a CFA, vary from LISREL to MPLUS?

16 November 2015 2,137 5 View

Should we use a 5 or 7 point Likert scale? What's better and why?

As researchers do not agree with the appropriate number of point Likert scale (5, 7...?), I would like to know the main contributions or papers to support both options.

19 January 2015 9,253 42 View

Can anyone share a key for identification of species of Heliothinae moths using genitalia?

Helicoverpa zea , armigera, gelotopoeon, bractae..

15 January 2015 5,888 5 View

Does anyone have experience with blue transfer buffer?

I've been doing western blot the last two years and I have never had a problem like this. When the transference is finished, the transfer buffer has turned blue. It seems that the sample buffer...

27 January 2014 3,493 1 View

How to analyze a particular region of my simulation box in GROMACS?

Hi, I am using GROMACS 5.1.4 to simulate water in contact with a surface. I am only interested to calculate some properties of water near the surface. Let's say at a distance of x nm from the...

03 March 2021 9,989 2 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View

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

How to polymerize TEOS?

I want to polymerize TEOS on a surface. I know that NH4OH is a preferred catalyst and an alcoholic solvent should be used .But I can not find certain amounts of each material to use. Does any one...

02 March 2021 1,404 6 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

How can extract ciprofloxacin hydrochloride disolve in water er to organic solvent such as dichloromethan or any other solvent?

I need a procedure to extract the ciprofloxacin hydrochloride from aqueous solution by using dichloromethane in detail,. I thank you very much.

01 March 2021 4,306 1 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

How to make fractions of chloroform extract of plant, using seperating funnel?

28 February 2021 8,466 2 View

Why am i not getting solid after reacting APTES with salicylaldehyde?

The reaction of APTES with salicylaldehyde in ethanol leads to the formation of imine compound yellow solid which is mention in literature, but I am not getting yellow solid I don't know why? when...

28 February 2021 2,955 2 View

can I treat waste water containing solvents and alcohol with electrocoagulation?

there are solvents and alcohol in the waste water of a factory that produces disinfectants. Increasing this waste water requires very serious operations. Can I treat this waste water with...

27 February 2021 2,609 3 View