Hello all! Finishing my research on black powder explosives. This spectrum is of black powder explosives and I can't seem to identify these peaks and could use some help.
Has anyone ever tried to deliver CO2 with a CGA 300 regulator? I know that a CGA 320 regulator is standard for CO2. The issue is that I currently do not have any free CGA 320 regulators. I also...
25 February 2021 3,292 3 View
I have question about building 3DQSAR model via regression model. I cant achieve r^2 more than 0.6 for 'test set' as well as for 'training CV'-what is this?. I am wondering whether 'training set'...
17 January 2021 3,463 4 View
If multirate filter banks have been used by engeeniers before wavelets theory, why it is important and useful to know that those filter banks correspond to wavelet functions?
11 May 2020 5,895 2 View
I wondering if you know texts, guides or any didactical advice that can help is to teach discrete wavelet theory to undergeaduate computer scientist
11 May 2020 3,458 3 View
The Shenzen Code in his several articles treats the way botanists should move around nomenclature. It is interesting to read all the several examples that the Code brings for each case. However,...
22 January 2020 4,817 6 View
Hi, I'm writing a paper about Data Augmentation and I'm looking for some way of increasing the size of a dataset. I'm already aware of the techniques used for images (transformations, PCA,...
06 June 2019 8,206 6 View
If running a Factor analysis (principal axis) requesting 6 factors and suppressing value < .3 how do you interpret items that don't load onto any factors in the pattern matrix? Is this simply...
02 April 2019 4,165 2 View
I wish to purchase a smartphone-compatible microscope, primarily for counting scales on small lizards, identifying invertebrates etc. A low magnification capability (e.g. 5 or 10x) is more...
30 December 2018 2,765 4 View
Recently I've tried to use the following...
20 August 2018 3,321 2 View
I have a fluorescent light source and an objective lens and would like to measure the light intensity at the focal plane. I can measure the light intensity at a different position but need to...
01 April 2018 8,003 4 View
Insects have been consumed by human diet since prehistoric times. At present, the idea of looking at insects as food has been getting traction worldwide, also in response to increasing food...
03 March 2021 6,223 5 View
The figure shows DSC cooling (blue) and 2nd heating (green) curves (step: 10 K/min) for a commercial sample supplied as Atactic Polypropylene (APP). The heating curve illustrates two major...
03 March 2021 5,857 3 View
Hello, I would like to ask how to grow E.coli which resists 50 or 100ug/ml of Blasticidin. I have tried many methods by using low salt Luria-Bertain(LB) agar plate. However, no colonies grow. Let...
01 March 2021 2,027 2 View
Hello Everyone. Currently I am working to characterize macrophages in the myocardium after ischemia-reperfusion injury in rats. Due to the low total cell number isolated from rat hearts I can...
01 March 2021 3,867 3 View
I'm looking at the aggregation of my protein sample using DLS. Unfortunately, my buffer (20mM HEPES) also results in a set of peaks. These are at approximately 1 and 1000 d.nm. The lowest peak...
01 March 2021 9,015 2 View
i have recorded raman spectra of strontium oxide thin film. the spectra were recorded in the range 400 to 4000 cm-1. i have reference to peaks upto 1000cm-1. but i couldn't find literature for...
26 February 2021 2,499 1 View
Hi! If it is possible to have two luminescence bands of the same peak position in a spectrum, what is the reason behind formation of two separate bands instead of one? This phenomenon is related...
26 February 2021 4,963 5 View
I am working on TiO2 composite material and the results of XRD have a lot of small/junk peaks and while I apply a smooth filter in Origin then the other characteristics peaks disappear so anyone...
26 February 2021 8,183 3 View
I have several Raman spectra with very distinct peaks at certain wavenumbers, such as 277, 359, 466, 583, 623, 686, and 795cm-1. How can I identify them to what compound(s)? The RRUFF and others...
24 February 2021 363 3 View
Hi all, I am doing a genescan analysis for a deleted exon in the patient sample. The amplified region is 215 bp. In the patient sample because of homozygous deletion, no peak is observed while in...
23 February 2021 5,645 1 View