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

Is reporting Wald Statistic Very Important when reporting results of multinomial logistic regression analysis?

I am performing statistical analysis on a data where I am trying to see observe the impact of factors like sex, area of residence and literacy on outcome variables. I don't have any SPSS...

03 December 2020 8,411 9 View

Anyone knowing any software for scientific graphs plotting?

I need some help

03 December 2020 6,794 6 View

How can I download Materials Studio ?

How can I download Materials Studio ? Anyone please suggest me any website. Thank you

10 November 2020 5,238 3 View

Low quality extraction of termite DNA?

I am extracting DNA of 3 years old termite specimen for bar coding through chelex extraction but facing low quality of DNA (most probably because of long storage or improper transportation)? Is...

01 November 2020 2,077 1 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

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

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

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

What are the application of Fixed points thoery in Chemistry.?

It is said that fixed point theory has lot of applications not in the field of mathematics only but also in various areas. So I am looking for applications in Chemistry only..

26 February 2021 3,533 1 View

How to interpolate from a time-series database ?

Hi, I am having trouble with a problem, in the field of Optimal Control and the generation of optimal time-series. Let's consider a system, whose dynamics are represented by dx/dt =...

24 February 2021 9,105 2 View

How to constrain genetic algorithm input u?

My real system (buck converter) can only take an input of 0 to 1 (duty ratio) and I need to constrain the system so the controller action keeps within this bounds. How can I do this? The code for...

22 February 2021 2,125 3 View

Helix antenna coupling problem?

Dealing with a helix antenna, made with flexible material and not rigid like using a PCB board or wire. At the beginning of the helix is too close to the ground plane, causing coupling. How can I...

21 February 2021 4,453 3 View

How to calculate the Atomic Polar Tensor using DFT ?

Dear friends, I am a beginner at DFT calculation. I have done a structure optimization using DFT- B3LYP/6-31G*, Nevertheless, I don't know How to calculate the Atomic Polar Tensor (APT) in...

17 February 2021 9,082 3 View

Can I get the design of circular cylinder to fix thermocouple on the surface and cartridge heater in core ?

Respected Scientific Community. I'm interested to carry out experimental studies on a circular cylinder. But even after doing literature review I unable to get the exact design of the cylinder...

10 February 2021 6,221 1 View