I need technical materials on the interpretations of proton and carbon NMR. Kindly send if you have one.
I need informations on interpreting results on GC-MS analysis
02 March 2022 6,359 3 View
Extraction of banana fiber from psuedo stem
19 January 2021 1,072 3 View
I carried out XRD analysis on some shale samples and I observed gypsum (up to 18%), jarosite (up to 10%) and minor amount of pyrite in the samples analyzed. Is sulfide (pyrite?) reoxidation in...
28 May 2020 9,914 1 View
Ten 10 of the samples analyzed have values that range from 0.45 - 0.61 while 3 samples range from 0.51 - 0.59. I assume the samples analyzed are more of hydrogen - poor vitrinite A. I need more...
29 December 2015 394 2 View
Observe this structure during a geologic mapping of coal.
09 July 2015 8,156 24 View
Laboratory chemical safety is an important issue. Safety and health considerations are important to the success of a research work. The science laboratory is an inherently dangerous place, with...
01 January 1970 4,188 1 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
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
why don't d-orbitals split themselves because of themselves without the presence of ligands? Electrons are indistinguishable. Why wouldn't it be more correct that protons from a ligand split the...
03 August 2024 3,589 3 View
I'm guessing it's because the ligand experiences too much electron repulsion or proton repulsion from the chromium to insert them close to the 3d-orbitals which are close to the metal nucleus. Is...
03 August 2024 1,370 1 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
If you think of electrons with spin as bar magnets, you know bar magnets of opposite polarity as long as they're not occupying the same spatial location don't cancel out each other's magnetic...
03 August 2024 3,927 2 View
I am using a Bruker 600M solid-state NMR spectrometer with a Micro 2.5 microimaging system. The test sample is a tube of 1M LiCl aqueous solution, and the nucleus detected is 1H. I am trying to...
01 August 2024 9,227 1 View
Following curve related to Co0.6Mn0.4Fe2O4 Magnetic nanoparticles with extra phase a-Fe2O3. I will appreciate to help me to interpretation this spectroscopy, especially the blue line.
31 July 2024 9,140 2 View