Results 31 to 40 of about 1,110,031 (286)

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 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

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

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

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

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

Morphology-based automated baseline removal for raman spectra of artistic pigments [PDF]

open access: yes, 2010
The interpretation of a Raman spectrum is based on the identification of its characteristic molecular bands. However, the assignment of the vibrational modes is often compromised by the presence in the spectrum of an intense fluorescence background that ...
Pérez Pueyo, Rosanna   +5 more
core   +3 more sources

High-throughput computation of Raman spectra from first principles

open access: yesScientific Data, 2023
Raman spectroscopy is a widely-used non-destructive material characterization method, which provides information about the vibrational modes of the material and therefore of its atomic structure and chemical composition.
Mohammad Bagheri, Hannu-Pekka Komsa
doaj   +1 more source

UiO‐66 metal–organic frameworks in biomedicine: From structural tunability to bioimaging, photodiagnostics, and photodynamic cancer therapy

open access: yesFEBS Open Bio, EarlyView.
UiO‐66(Zr) metal–organic frameworks are chemically stable, biocompatible, and highly tunable nanomaterials. Their modular structure enables controlled drug delivery, multimodal bioimaging, and light‐activated photodynamic therapy, supporting integrated diagnostic and therapeutic (theranostic) applications in cancer and biomedical research.
Veronika Huntošová   +2 more
wiley   +1 more source

Theoretical Raman spectroscopy study of finite and infinite fullerene chains inside single-walled carbon nitride nanotubes

open access: yesMaterials and Devices, 2019
We investigated the hybrid system between Nitrogen doped Single Wall Carbon Nanotubes (N-SWCNT) and fullerene (C60  C70) molecules. The structure of the encapsulated fullerenes inside N-SWCNTs is derived from minimum energy calculation using a ...
Hassane Chadli   +3 more
doaj   +6 more sources

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