Dear, does anybody know an article about the calculation of P meso when you have a racemic monomer and an achiral catalyst leading to an isotactic polymer ? I really don't find any article with the explanation.
I have made a deprotection of a ketal to obtain the corresponding ketone. However it was not complete and have still 10% of the protected product. I want to perform a bayer Villiger oxidation on...
10 November 2018 3,951 3 View
I read many articles and questions here about the solubility of PVA. Many scientists answered PVA is soluble in water, I see in a publication in DMSO. But does anybody have already work with PVA...
31 December 2017 5,722 3 View
I have found a publication about the hydride character. My question is about Et3SiH, as you can see in the file the DG value of HSiEt3 is 90 Kcal/mol, I have found a pH for Et3SiH bout 5. if we...
05 June 2015 4,904 2 View
Fatal error in MPI_Allreduce: Other MPI error, error stack: MPI_Allreduce(1628)......: MPI_Allreduce(sbuf=000002459254A180, rbuf=000002459F86A140, count=4851, MPI_DOUBLE_COMPLEX, MPI_SUM,...
09 August 2024 7,615 1 View
I'm currently working on calculating the collision cross section (CCS) for various ions, and I'm facing challenges when dealing with sodiated and multiply charged ions. Most of the resources I’ve...
08 August 2024 8,329 0 View
If we map as a continuous motion an ionising electron (beginning its journey at n=1) in an H atom, a specific hyperbolic spiral appears (see animation). When we solve this spiral formula, we find...
07 August 2024 5,343 2 View
Let's say we have a standard, regular hexagonal honeycomb with a 3-arm primitive unit cell (something like the figure attached; the figure is only representative and not drawn to scale). The...
07 August 2024 1,937 1 View
What is the prepared reference material that can be used in the ICPE-9820 Shimadzu Japan instrument, which employs inductively coupled plasma optical emission spectrometry (ICP-OES) to measure...
06 August 2024 1,896 1 View
Citi BLOC Standard Basket Definitions: A standardized unit representing a fixed basket of construction materials, labor, and equipment costs priced in various cities. Purpose: To create a common...
04 August 2024 8,997 1 View
What is the method for analytically calculating the wear and service life of polymer-polymer sliding pairs?
04 August 2024 1,078 1 View
I am currently working on a project involving liposomes and need to determine the maximum volume of siRNA that can be added to a 2.5 mL liposome solution with a total lipid concentration of 10...
30 July 2024 6,420 1 View
In some data sources it has been grouped in Q1 and some shows it is Q2.
29 July 2024 4,227 2 View
Hello everyone, I am try to understand the differences interaction between insoluble and soluble polymers in water with metal ions and how theit charge density (of metal ions) affect the interaction.
29 July 2024 6,350 3 View