Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Raman spectroscopy as a tool for reagent free estimation   We present results of Raman spectroscopic studies of urine to determine the
suitability of near-infrared Raman spectroscopy for quantitative estimation of
urinary urea. The Raman spectra were acquired from the urine samples with an
inbuilt Raman spectroscopy setup that employs a 785-nm diode laser as the Raman
excitation source. A multivariate algorithm based on partial least square (PLS)
regression was developed to predict the concentration of urea depending on the
measured sets of Raman spectra and the reference urea concentration. The
computed results shows that Raman spectroscopy in amalgamation with PLS-based
multivariate chemometric algorithm can detect urea in urine samples with an
accuracy of >90 %

17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con