Results 21 to 30 of about 132,397 (310)

Characterization of Coals and Coal Ashes with High Si Content Using Combined Second-Derivative Infrared Spectroscopy and Raman Spectroscopy

open access: yesCrystals, 2019
The organic and mineral components in two coals and resulting high-temperature ashes with high silicon content were characterized by second-derivative infrared spectroscopy, Raman spectroscopy, and X-ray diffraction (XRD).
Yanshan Yin   +7 more
doaj   +1 more source

Raman tweezers spectroscopy of live, single red and white blood cells. [PDF]

open access: yesPLoS ONE, 2010
An optical trap has been combined with a Raman spectrometer to make high-resolution measurements of Raman spectra of optically-immobilized, single, live red (RBC) and white blood cells (WBC) under physiological conditions.
Aseefhali Bankapur   +4 more
doaj   +1 more source

The spectroscopic detection of exogenous material in fingerprints after development with powders and recovery with adhesive lifters [PDF]

open access: yes, 2008
The application of powders to fingerprints has long been established as an effective and reliable method for developing latent fingerprints. The powders adhere to the ridge pattern of the fingerprint only, thus allowing the image to be visualised ...
West, M.J., Went, Michael J.
core   +1 more source

Raman Spectra Characteristics of Fluid Inclusion in the Shaanxi Formation of the Dingbian Area in the Ordos Basin

open access: yesYankuang ceshi, 2015
Raman Spectroscopy is an important means of non-destructive fluid inclusions analysis. Composition of fluid inclusions in quartz from the Shaanxi formation of the Dingbian area in the Ordos Basin was determined by the Raman technique.
LI Yan-xia, YAN Xin-yi, TIAN Yu-feng
doaj   +1 more source

Raman Spectroscopic Study of Five Typical Plasticizers Based on DFT and HF Theoretical Calculation

open access: yesFoods, 2023
Phthalic acid esters (PAEs) are the most commonly used plasticizers, and long-term or high levels of exposure to PAEs have a huge potential risk to human health.
Tong Sun   +3 more
doaj   +1 more source

Rapid identification of pathogenic bacteria using Raman spectroscopy and deep learning

open access: yesNature Communications, 2019
The use of Raman spectroscopy for pathogen identification is hampered by the weak Raman signal and phenotypic diversity of bacterial cells. Here the authors generate an extensive dataset of bacterial Raman spectra and apply deep learning to identify ...
Chi-Sing Ho   +9 more
doaj   +1 more source

Application of the Dynamical Network Biomarker Theory to Raman Spectra

open access: yesBiomolecules, 2022
The dynamical network biomarker (DNB) theory detects the early warning signals of state transitions utilizing fluctuations in and correlations between variables in complex systems.
Takayuki Haruki   +13 more
doaj   +1 more source

Rapid Discrimination of Clinically Important Pathogens Through Machine Learning Analysis of Surface Enhanced Raman Spectra

open access: yesFrontiers in Microbiology, 2022
With its low-cost, label-free and non-destructive features, Raman spectroscopy is becoming an attractive technique with high potential to discriminate the causative agent of bacterial infections and bacterial infections per se. However, it is challenging
Jia-Wei Tang   +10 more
doaj   +1 more source

Preresonance Raman spectra of methylpyridines

open access: yesJournal of Raman Spectroscopy, 1990
AbstractPreresonance Raman spectra of methylpyridines (picolines) are presented for different incident laser wavelengths. A strong intensity variation of the non‐totally symmetric vibration 10α is observed, which implies a vibronic coupling of the lowest nπ* excited state with the next ππ* (B2u and B1u) states. In addition an intensity increase of some
Kosmidis, C.   +2 more
openaire   +2 more sources

An FT-Raman, FT-IR, and Quantum Chemical Investigation of Stanozolol and Oxandrolone

open access: yesBiosensors, 2017
We have studied the Fourier Transform Infrared (FT-IR) and the Fourier transform Raman (FT-Raman) spectra of stanozolol and oxandrolone, and we have performed quantum chemical calculations based on the density functional theory (DFT) with a B3LYP/6-31G ...
Tibebe Lemma   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy