Results 1 to 10 of about 48,397 (306)

Progress in application of terahertz time-domain spectroscopy for pharmaceutical analyses [PDF]

open access: yesFrontiers in Bioengineering and Biotechnology, 2023
Terahertz time-domain spectroscopy is an analytical method using terahertz time-domain pulses to study the physical and chemical properties of substances.
Shuteng Huang   +3 more
doaj   +3 more sources

Terahertz time-domain spectroscopy of edible oils [PDF]

open access: yesRoyal Society Open Science, 2017
Chemical degradation of edible oils has been studied using conventional spectroscopic methods spanning the spectrum from ultraviolet to mid-IR. However, the possibility of morphological changes of oil molecules that can be detected at terahertz ...
Alex Dinovitser   +2 more
doaj   +8 more sources

Detection of Microplastic in Salts Using Terahertz Time-Domain Spectroscopy [PDF]

open access: yesSensors, 2021
We report on a prototypical study of the detection of microplastic embedded in table salts by using terahertz time-domain spectroscopy. In the experiment, high-density polyethylene (HDPE) of sizes from 150 to 400 μm are used as a representative ...
Jaeseung Im   +5 more
doaj   +3 more sources

Identification of black plastics with terahertz time-domain spectroscopy and machine learning. [PDF]

open access: yesSci Rep, 2023
Several optical spectroscopy and imaging techniques have already proven their ability to identify different plastic types found in household waste. However, most common optical techniques feasible for plastic sorting, struggle to measure black plastic ...
Cielecki PP   +5 more
europepmc   +2 more sources

Characterization of the remediation of chromium ion contamination with bentonite by terahertz time-domain spectroscopy. [PDF]

open access: yesSci Rep, 2022
Heavy metal pollution of agricultural and urban soils limits economic progress in the rapidly developing society. Terahertz technology is applied to detect heavy metal pollutants under existence of multiple pathways of their dissemination. In this study,
Cheng H   +8 more
europepmc   +2 more sources

Measurement of Water Uptake and States in Nafion Membranes Using Humidity-Controlled Terahertz Time-Domain Spectroscopy. [PDF]

open access: yesACS Sustain Chem Eng
Perfluorinated sulfonic acid ionomers are well known for their unique water uptake properties and chemical/mechanical stability. Understanding their performance–stability trade-offs is key to realizing membranes with optimal properties.
Ludlam GAH   +5 more
europepmc   +2 more sources

Identification of Rice Varieties Based on Terahertz Time Domain Spectroscopy

open access: greenShipin gongye ke-ji, 2022
In order to achieve accurate identification of rice varieties, a rice variety identification method based on terahertz time-domain spectroscopy (THz-TDS) technology was proposed.
Qian WANG   +4 more
doaj   +2 more sources

Hydration Shells of DNA from the Point of View of Terahertz Time-Domain Spectroscopy. [PDF]

open access: yesInt J Mol Sci, 2021
Hydration plays a fundamental role in DNA structure and functioning. However, the hydration shell has been studied only up to the scale of 10–20 water molecules per nucleotide.
Penkova NA, Sharapov MG, Penkov NV.
europepmc   +2 more sources

Sensing Water Absorption in Hygrothermally Aged Epoxies with Terahertz Time-Domain Spectroscopy. [PDF]

open access: yesAnal Chem, 2021
In the field of non-destructive testing, terahertz sensing has been used to analyze a wide range of materials where the most successful applications have involved materials that are semi-transparent to terahertz radiation.
Lin H, Russell BP, Bawuah P, Zeitler JA.
europepmc   +2 more sources

Quantitative Determination of Sucrose Adulterated in Red Ginseng by Terahertz Time-Domain Spectroscopy (THz-TDS) with Monte Carlo Uninformative Variable Elimination (MCUVE) and Support Vector Regression (SVR)

open access: yesJournal of Spectroscopy, 2022
This paper introduces a method to detect the content of sucrose, an adulterant of red ginseng, based on terahertz spectroscopy. Experiments were carried out on red ginseng with 6 levels of adulterated concentrations using terahertz time-domain ...
Shubao Pan   +4 more
doaj   +2 more sources

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