Can some explain and suggest some reference wherein I could find and understand for given protein with ramachandran angels how to determine the coordinates of varioius atoms and its coordinates. ?
I am trying to write down the slater determinant for 10 electron filling from 1s up , 1s down, 2s up, 2s down, 2px up, 2px down, 2py up,2py down, 2pz up, 2pz down, There are totally 10 single...
06 July 2019 964 1 View
I am reading the book on MONTE CARLO METHODS IN AB INITIO QUANTUM CHEMISTRY by Hammond and Lester. (Chapter 5-Variational Trial Functions, Section 5.3-Hartree Fock and Beyond, Sub-Section 5.3.3...
03 April 2019 4,871 3 View
How to get large number of energy levels for H2 molecule without electron electron repulsion in ORCA software. I used 6-31G and got only four energy levels. Can we get arbitrary number of energy...
03 April 2019 4,550 2 View
I have N lattice points which are arranged linearly and equally spaced. I want to make connections(say with some wire or thread) with each lattice site with another. The first one has N-1...
03 April 2019 7,676 19 View
I have large number of input files to run in orca software. I have named the files as follows, orcafile0, orcafile1,...and so on upto 512 files. How do I write a batch program to run all the files...
02 March 2019 7,877 1 View
Is it really possible to give multiple input blocks in a single file ? Can ORCA recognize it as separate input and run them separately and produce the output for multiple inputs
02 March 2019 3,947 6 View
What is the best Gaussian basis set which (almost ) exactly fits well with slater type orbitals. I want to know at least for hydrogen molecule. I mean , I want to represent 1s,2s and all the 2p...
02 March 2019 4,343 1 View
I wanted to install PSi4 a quantum chemistry software package in windows 8. However, the Psi4 website says about Linux and Mac but not about windows. Is it really possible to install Psi4 in...
01 February 2019 4,502 1 View
I am trying to solve two electron integrals and one electron integrals numerically, using python. How far pyquante is useful to solve these integrals numerically and how to install it and can...
09 October 2018 3,575 1 View
I am trying to solve numerically Helium atom problem (spectrum of two electrons with interaction with nucleus and electronic repulsion).. I have excluded the kinetic term of nucleus and put the...
09 October 2018 3,062 0 View
I tried four trials of the same Copper Phosphides sample in Alkaline medium ( 0.5M KOH) with Hg/HgO reference electrode and Pt as counter electrode. I used 0.001 V/s scan rate for first three...
10 August 2024 3,629 1 View
How can I determine a good adhesion strength range for coatings on polymer surfaces, such as DLC on polymer substrates? Is there a specific threshold for adhesion strength (from T-peel tests)...
10 August 2024 942 3 View
How do interactions between the biosphere, the carbon cycle, and the water cycle impact global warming and interaction between the atmosphere and the hydrosphere?
09 August 2024 3,291 2 View
The paper in question is "Interpolation of Nitrogen Fertilizer Use in Canada from Fertilizer Use Surveys". This paper was very recently published by Agronomy (MDPI). Agronomy has, in the last day...
07 August 2024 9,934 3 View
Greetings When one is to perform Simulation or modelling of Pyrolysis of Biomass Waste materials using Aspen Plus software, and one has both the macromolecules breakdown (Cellulose, Lignin and...
06 August 2024 5,023 1 View
Global ‘Weather’ has stopped, as ‘aqua thermionic instituted by the ‘Global thermo atmospherics has instituted global thermodynamics of 120º C + and thus all waters are, or have boiled into a...
06 August 2024 8,716 0 View
Hello. I am working on ROS production of two systems: system A is cerium oxide and hydrogen peroxide, system B is cerium oxide nanoparticle, hydrogen peroxide and potassium bromide. I did some...
04 August 2024 5,974 3 View
Why BaO (s) + H2O(l) ---> Ba 2+(aq) + 2 OH - (aq) if Oxygen loves owning all the electrons, why would it bind to hydrogen which competes with Oxygen for electron ownership more so than...
03 August 2024 5,392 1 View
I heard an explanation about something being a better proton acceptor or lone pair donor but that doesn't make sense. I couldn't explain in in terms of acid-base theory. The hand-waving way I saw...
03 August 2024 9,918 0 View
What is the best way to freeze the rat brain - liquid nitrogen, Dry ice , isopentane - after isolation for later protein investigation by Elisa?
01 August 2024 1,722 1 View