The work presented in this paper is focused on the use of spectroscopy to identify the type of tissue of human brain samples employing support vector machine classifiers. Two different spectrometers were used to acquire infrared spectroscopic signatures in the wavenumber range between 1200⁻3500 cm. An extensive analysis was performed to find the optimal configuration for a support vector machine classifier and determine the most relevant regions of the spectra for this particular application. The results demonstrate that the developed algorithm is robust enough to classify the infrared spectroscopic data of human brain tissue at three different discrimination levels.
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http://dx.doi.org/10.3390/s18124487 | DOI Listing |
Acc Chem Res
January 2025
Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science, Seoul 02841, Korea.
ConspectusWater-in-salt electrolytes (WiSEs) are promising electrolytes for next-generation lithium-ion batteries (LIBs), offering critical advantages like nonflammability and improved safety. These electrolytes have extremely high salt concentrations and exhibit unique solvation structures and transport mechanisms dominated by the formation of ion networks and aggregates. These ion networks are central to the performance of WiSEs, govern the transport properties and stability of the electrolyte, deviating from conventional dilute aqueous or organic electrolytes.
View Article and Find Full Text PDFSensors (Basel)
December 2024
School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
Curcumae Longae Rhizoma (CLRh), Curcumae Radix (CRa), and Curcumae Rhizoma (CRh), derived from the different medicinal parts of the species, are blood-activating analgesics commonly used for promoting blood circulation and relieving pain. Due to their certain similarities in chemical composition and pharmacological effects, these three herbs exhibit a high risk associated with mixing and indiscriminate use. The diverse methods used for distinguishing the medicinal origins are complex, time-consuming, and limited to intraspecific differentiation, which are not suitable for rapid and systematic identification.
View Article and Find Full Text PDFSci Rep
January 2025
Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, 110067, India.
Excess consumption of antibiotics leads to antibiotic resistance that hinders the control and cure of microbial diseases. Therefore, it is crucial to monitor the antibiotic levels in the environment. In this proposed research work, an optical nano-sensor was devised that can sense the ultra-low concentration of antibiotics, in samples like tap water using fluorescent zinc oxide quantum dots (ZnO QDs) based nano-sensor.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
December 2024
College of Engineering, Nanjing Agricultural University, Nanjing 210031, China.
Spectroscopic technology is an effective method for estimating rice chlorophyll content. However, redundant spectral information and the complex background of rice in situ challenge the accuracy and robustness of the estimation. To address this problem, this study proposed a band selection method combining spectral color characteristics and established a convolutional neural network (CNN) model based on this method to estimate chlorophyll content of rice for black (background-free), clear, muddy, and green algae-covered backgrounds.
View Article and Find Full Text PDFNanomaterials (Basel)
December 2024
Division of Physics and Semiconductor, Dongguk University, Seoul 04620, Republic of Korea.
Biomass, though a major energy source, remains underutilized. Biochar from biomass pyrolysis, with its high porosity and surface area, is especially useful as catalyst support, enhancing catalytic activity and reducing electron recombination in photocatalysis. Indonesia, the world's top palm oil producer, generated around 12 million tons of empty fruit bunches (EFBs) in 2023, making EFBs a promising biochar source.
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