How to design a reactive extraction process in Aspen Plus?

Hello, my task is it to create a specific extraction process. There is a mixture containing water, nitric acid and hydrochloric acid. It is known, that tributyl-phosphate is a solvent, which...

03 January 2021 4,163 3 View

IC50 value from this graph?

01 January 2021 6,848 4 View

Anyone knowing any software for scientific graphs plotting?

I need some help

03 December 2020 6,794 6 View

Autodock final stage execution appears with the following error; "WARNING: Unrecognized keyword in docking parameter file"?

Hello everyone, I do have an error while executing the final stage of autodock. The following massage appears and the program puts on hold. "WARNING: Unrecognized keyword in docking parameter...

20 September 2020 8,271 2 View

What is the state of the art in chiral NNN type tridentate ligands?

What are the chiral NNN type ligands that have afforded best chiral induction in organic transformations catalysed by transition metal complexes? Any NNN type ligand and any organic transformation!

21 May 2020 1,468 7 View

Can anyone suggest good survey platforms which allows uploading of audio+video stimuli and collecting audio responses in addition to survey ?

Can anyone suggest good survey platforms which allows uploading of audio+video stimuli and collecting audio responses in addition to survey ? It would also be helpful if you could recommend few...

11 April 2020 3,147 3 View

How many imaginary frequencies does a concerted transition state have?

Say, a concerted transition state involves the breaking of two bonds and the associated making of two new bonds. Does each bond making/breaking has a corresponding imaginary frequency, so in total...

19 March 2020 5,236 4 View

How do you measure the density, surface tension, freezing point, viscosity, refractive index of deep eutectic solvents?

A deep eutectic solvent is prepared by mixing a quaternary ammonium salt with metal salts or a hydrogen Bond donor such as urea to form a liquid with a melting point lower than the melting points...

16 March 2020 2,266 5 View

Is there any direct HPLC method for quantification of PHB,PHV using C-18 Reverse Phase column?

* Crotonic acid assay is the most rapid and simple method of quantification of PHB. * Karr et al., 1983 showed extension of crotonic acid assay into HPLC for PHB detection. * While Del Don et...

13 January 2020 8,341 2 View

What is coffee bean constrast in Tansmission electron microscopy?

How can we identify the precipitate /matrix relationship (coherent/incoherent) from coffee bean contrast observed in the precipitates.

01 December 2019 3,277 1 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 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

Could you recommend any books about Number Theory?

Beginner level books. High level books. Analytical Number Theory. Algebraic Number Theory. Combinatorical Number Theory. Books about partitions. Books about primes.

03 March 2021 7,174 5 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

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

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View