1 April 2021, Volume 75, Issue 4, pp. 361-479  
10 articles

Exploration of Principal Component Analysis: Deriving Principal Component Analysis Visually Using Spectra

Appl. Spectrosc. 75(4), 361-375 (2021)  View: PDF  [Suppl. Mat. (1)]

Vibrational Spectroscopic Monitoring of the Gelation Transition in Nafion Ionomer Dispersions

open access Appl. Spectrosc. 75(4), 376-384 (2021)  View: PDF  [Suppl. Mat. (1)]

Use of Near-Infrared–Mid-Infrared Dual-Wavelength Spectrometry to Obtain Two-Dimensional Difference Spectra of Sesame Oil as Inactive Drug Ingredient

Appl. Spectrosc. 75(4), 385-394 (2021)  View: PDF  [Suppl. Mat. (3)]

Hydration and Ion-Pair Formation of NaNO3(aq): A Vibrational Spectroscopic and Density Functional Theory Study

Appl. Spectrosc. 75(4), 395-411 (2021)  View: PDF  [Suppl. Mat. (1)]

Comparison of Surface-Enhanced Raman Scattering Properties of Serum and Urine for the Detection of Chronic Kidney Disease in Patients

open access Appl. Spectrosc. 75(4), 412-421 (2021)  View: PDF  [Suppl. Mat. (1)]

Intensity Enhancement of a Two-Dimensional Asynchronous Spectrum Without Noise Level Fluctuation Escalation Using a One-Dimensional Spectra Sequence Change

Appl. Spectrosc. 75(4), 422-433 (2021)  View: PDF  [Suppl. Mat. (1)]

Authentication of Antibiotics Using Portable Near-Infrared Spectroscopy and Multivariate Data Analysis

open access Appl. Spectrosc. 75(4), 434-444 (2021)  View: PDF  [Suppl. Mat. (1)]

Fiber Optic Reflection Spectroscopy–Near-Infrared Characterization Study of Dry Pigments for Pictorial Retouching

Appl. Spectrosc. 75(4), 445-461 (2021)  View: PDF  [Suppl. Mat. (1)]

Thermal Camera-Based Fourier Transform Infrared Thermospectroscopic Imager

Appl. Spectrosc. 75(4), 462-474 (2021)  View: PDF  [Suppl. Mat. (1)]