When ever I try to dissolve some polymers in a mixture of acetone and DMF, I observe that the volume of the solution keeps decreasing with stirring time even at room temperature. Please why does this happens and how can I overcome it?
When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...
03 March 2021 4,892 5 View
Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...
03 March 2021 6,193 1 View
Any good recommendations for participant recruitment for online surveys on a grad school student budget?
02 March 2021 4,293 4 View
We have synthesized various metal complexes with different environment around the metals. Now to see the application of synthesized complexes we need this study also. we are also interested in...
01 March 2021 1,899 2 View
Hello everyone. I have conducted the research on post harvest longevity of tomato crop using plastic packaging and different doses of chemicals as two different factors. The design of experiment I...
28 February 2021 8,189 3 View
The antimicrobial effect of local anesthetics has been known for more than 50 years, but it still seems to have an unclear mechanism of action. which bacteria? which concentration? etc etc. ....
27 February 2021 4,450 2 View
System Description Cuda 11.2 GeForce GTX 1080ti tensorflow version 2.4.1 keras version 2.2.0 python version 3.8 I was getting the below error when I try to run my code on the...
25 February 2021 6,673 2 View
24 February 2021 5,378 1 View
In the PVD of TiN thin films (~100A), I've found the resistivity of the TiN films dropped from ~100 to 60um*cm with N2 flow increasing up to the metallic mode ending point; then the resistivity...
21 February 2021 1,864 2 View
I'm developing a UHPLC assay, and the fluorescent product is 2,3-dihydroxyquinoxaline. The reaction to produce this requires hydrochloric acid (about 1.2 M). Will storage in this acidic...
20 February 2021 5,820 4 View
I want to prepare liposomes made of azolectin (sometimes spelled as asolectin). I start with the azolectin powder, and many protocols say that I should wash it with acetone (dissolve, centrifuge,...
04 February 2021 2,738 3 View
Hello! I am precipitating some proteins (with either acetone or ammonium sulphate) and I need to resuspend the protein pellet in a buffer that properly keeps the proteins soluble AND which is...
27 January 2021 6,958 4 View
Hi, I have been analysing gas phase organic solvents with the help of FTIR. The spectrum looks a bit weird around 1200 cm^-1 (see attached image). I noticed a similar behaviour when the gas cell...
12 January 2021 3,286 8 View
I have used different reconstitution solvents in my sample extractions for an example, I used methanol as my reconstitution solvents in the water and sediment extraction sample whereas, I used...
25 November 2020 6,842 7 View
I prepared a 5X of M9 minimal salt and 1000X elemental trace and mixed these 2 solutions to produce carbon-free minimal salt media. Biphenyl was used as a carbon source but was prepped separately...
20 November 2020 5,904 5 View
Hi, I am currently trying to extract the pesticides fluroxypyr and prothioconazole from the soil by spiking using Dutch Mini Luke extraction method; however, I am failing. The instrument used for...
18 November 2020 4,006 9 View
I received a bottle of PMMA in solution with no information about which solvent was used, so I started using acetone to dilute the original solution. I had not experienced any consequences or...
03 November 2020 4,065 4 View
Hi, I am looking to test the effectiveness of pesticide residues extraction from the soil sample using the Dutch mini luke extraction method. The extraction method would involve the mixing of...
19 October 2020 1,318 4 View
12 October 2020 2,182 3 View
06 October 2020 1,026 3 View