Hi I am trying to clearify the reason of blackening on copper surfaces in a transformator. I guess it is Cu(II)O. How can I be certain about the idetity of the compound? Does surface analysis a correct way for identification? Thanks in advance.
You do not need an analysis. Copper has only two oxides: Cu2O (red) and CuO (black). If oxidized copper surface is black, then it must be CuO.
You are right. But I have to prove my decision to the client.
I have prepared 2-Amino-1-(4-nitrophenyl)-1,3-propanediol by acid catalysed deamidation of chloramphenicol and confirmed the structure by LC-MS. I need to purify the product and determine its...
31 December 2013 5,623 2 View
Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...
03 March 2021 8,796 3 View
I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance
03 March 2021 3,568 1 View
Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...
03 March 2021 5,978 5 View
What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...
03 March 2021 1,401 3 View
I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...
03 March 2021 8,920 3 View
dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...
03 March 2021 6,994 5 View
I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.
02 March 2021 4,359 3 View
I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...
02 March 2021 1,408 1 View
We have HUVEC bought from Invitrogen. Cat no -C-003-5c. while first plating the cells we have bought the protocol suggests not to centrifuge the cell with media to remove the DMSO. Should we...
02 March 2021 3,713 2 View
Good afternoon, I recently used OmniLog from BIOLOG for my experimentations : I tested the metabolism of different strains on 2 types of plates. I have 16 strains of 3 different groups...
02 March 2021 3,584 1 View