Results 11 to 20 of about 61,007 (217)

Porcelain shards from Portuguese wrecks: Raman spectroscopic analysis of marine archaeological ceramics

open access: yesHeritage Science, 2017
Raman spectroscopic analysis of shards recovered from two Portuguese shipwrecks, the Santo Espirito (1608) and the Santa Maria Madre de Deus (1643), believed to be carrying porcelains of the Ming period have revealed some interesting and novel results ...
Elizabeth A. Carter   +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

Biomedical Vibrational Spectroscopy in the Era of Artificial Intelligence

open access: yesMolecules, 2021
Biomedical vibrational spectroscopy has come of age. The past twenty years have brought many advancements and new developments and now its practitioners face a new challenge: artificial intelligence.
Henry Horst Mantsch
doaj   +1 more source

Human and Bovine Dentin Composition and Its Hybridization Mechanism Assessed by FT-Raman Spectroscopy

open access: yesJournal of Spectroscopy, 2013
FT-Raman spectroscopy was used to study the human and bovine dentin and their interactions with adhesive systems. Ten human (H) molars and ten bovine (B) teeth were prepared exposing the dentin and then each specimen was divided into two parts.
L. E. S. Soares   +2 more
doaj   +1 more source

Time-Resolved Chiral Vibrational Spectroscopy

open access: yesCHIMIA, 2009
Advances in infrared laser technology and detection sensitivity have made time-resolved chiral vibrational spectroscopy experimentally feasible. Here we describe our recent efforts in detecting, for the first time, transient vibrational circular
Jan Helbing, Mathias Bonmarin
doaj   +1 more source

Complementary vibrational spectroscopy

open access: yesNature Communications, 2019
Generally infrared and Raman spectroscopic methods are needed to study the symmetric and asymmetric molecular vibrational modes. Here the authors demonstrate complementary vibrational spectroscopy to organic molecules by simultaneously measuring their ...
Kazuki Hashimoto   +3 more
doaj   +1 more source

An Overview of the Successful Application of Vibrational Spectroscopy Techniques to Quantify Nutraceuticals in Fruits and Plants

open access: yesFoods, 2022
Vibrational spectroscopy techniques are the most used techniques in the routine analysis of foods. This technique is widely utilised to measure and monitor the proximate chemical composition (e.g., protein, dry matter, fat and fibre) in an array of ...
Daniel Cozzolino
doaj   +1 more source

Ultrafast Time-Resolved Vibrational Spectroscopy at University of Zurich

open access: yesCHIMIA, 2011
Vibrational spectroscopy uniquely combines ultrafast time-resolution with chemical selectivity and molecular structure resolution. A list of examples of experiments and applications pursued at University of Zurich highlights the wide-spread ...
Peter Hamm
doaj   +1 more source

Low-Frequency Vibrational Spectroscopy Characteristic of Pharmaceutical Carbamazepine Co-Crystals with Nicotinamide and Saccharin

open access: yesSensors, 2022
The pharmaceutical co-crystal has attracted increasing interest due to the improvement of physicochemical properties of active pharmaceutical ingredients.
Meilan Ge   +5 more
doaj   +1 more source

Breakthrough Potential in Near-Infrared Spectroscopy: Spectra Simulation. A Review of Recent Developments

open access: yesFrontiers in Chemistry, 2019
Near-infrared (12,500–4,000 cm−1; 800–2,500 nm) spectroscopy is the hallmark for one of the most rapidly advancing analytical techniques over the last few decades.
Krzysztof B. Beć, Christian W. Huck
doaj   +1 more source

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