Can the OH of hydrogen sulfate also react with isocyanate to form a urethane bond?
After performing symmetric PCR, PCR purification was performed. Afterwards, asymmetric PCR was performed using the PCR purification product as a template, but no ssDNA band was confirmed in the...
08 August 2024 1,668 3 View
Hello, I'm newbie to TCAD. I wanna calculate Breakdown Voltage of AlGaN/GaN HEMT. But, my code shows just saturation. Could you please help me how to simulate Breakdown Voltage of my code? And...
25 July 2024 3,738 1 View
Is it the best optimization ratio based on experiments?
22 July 2024 8,170 0 View
While reading papers on polyurethane synthesis, a question arose. Q1. MDI [methylene di(p-phenyl) isocyanate] 2mmol PTMO[poly(tetramethylene oxide)] 1mmol 1,4-butanediol 0.9mmol...
27 March 2024 2,718 2 View
In linear polyurethane, which is made by reacting isocyanate with two NCO and -diol with two OH, the R ratio (the ratio of NCO to OH), cannot theoretically deviate significantly from 1:1, right?
25 March 2024 4,488 8 View
It is said that dodecyl-trimethylammonium chloride (DTA) is used to dissolve hyaluronic acid (HA) in an organic solvent such as DMF. If the experiment is conducted using the method below, will...
23 March 2024 4,395 4 View
When making medical TPU using PCL, some papers use stannous octoate, while others do not. Is stannous octoate really necessary?
18 March 2024 8,587 3 View
To make polyurethane, TPU pellets are melted with DMF or THF solvent. Q1. Is the urethane bond between diol and isocyante broken by the solvent? Q2. When the solvent is volatilized, a urethane...
16 March 2024 5,039 9 View
Hi, I'm an undergraduate student working on western blot. I have understood most of the principles of western blot but still have some questions about it. 1) I wonder why the transfer time is...
22 February 2024 4,964 0 View
I am searching for peer reviewers for a case report that I am submitting to Cureus. I would need an email to send the invitation to. The case report is about a patient of amoxicillin-induced Drug...
28 June 2023 5,166 0 View
Hi all, my experimental XPS results shown that my C3N5 sample consists of N-H bond, hence in this case I should incorporate the N-H bond into my DFT modelling. However, I do notice several papers...
07 August 2024 8,414 2 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
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
I'm trying to calculate the tolerance factors of the hydride perovskite and the value calculated by me and the reported values are contradictory. Need more clarity in using the correct ionic radii...
01 August 2024 2,614 1 View
Hello Everyone! I am trying to create a metal hydride system where I am trying to create a temperature control with the emphasis on measuring the concentration of the hydrogen with the hydrogen...
29 July 2024 7,577 2 View
For people today, the enigma of the size of the proton still remains enigmatic. However, being myself a researcher in new physical theory which makes it possible to extend the different standard...
28 July 2024 7,823 1 View
In general, when performing a Tafel analysis for corrosion resistance measurements, a line voltage scan is performed from say -250 to +250 mV vs. OCV at low scan speed around 0.125 mV/s. However,...
25 July 2024 7,982 3 View
I have tried to saturate ferritic steel with hydrogen using the electrolytic method and H2SO4. However, the effect was very poor even after 3 days of "saturation". Can anybody help in choosing a...
24 July 2024 4,393 2 View
The resin bonded carbon containing refractories are aged before use. How time of aging is determined? And mechanism behind aging.
23 July 2024 3,205 0 View
I am new to research. The boiling point of triethyl amine (NEt3) is 89 degrees centigrade. I am skeptical that when I will let the hydrogen escape which is getting generated in situ, I will also...
21 July 2024 7,284 4 View