Article
Spectroscopy
Anindita Bhatta, Jahnabi Upadhyaya, Dipak Chamlagai, Lincoln Dkhar, Pynskhemborlang T. Phanrang, Mohan Rao Kollipara, Sivaprasad Mitra
Summary: Derivatives of thiazole-pyrazole fused benzo-coumarin compounds were synthesized and their photophysical properties were investigated. The synthesized coumarin compounds showed potential as therapeutic agents for Alzheimer's disease, inhibiting acetylcholinesterase activity. The presence of human serum albumin was found to affect the inhibition activity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yuefeng Gao, Sai Xu, Baojiu Chen
Summary: This study synthesized Cs2NaInCl6 nanocrystals co-doped with Sb3+ and Tb3+ ions as probes for copper ions detection in lubricating oil. The introduction of Sb3+ effectively reduced the band gap of the host material and enabled energy transfer pathway for Tb3+ emission. The doped Tb3+ ions resulted in the suppression of emission due to electron transfer. The Cs2NaInCl6: 2.5 %Sb3+, 40 %Tb3+ NCs exhibited superior sensitivity and selectivity for copper ions detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yu Liu, Yue Zhang, Changyao Liu, Ce Wang, Baocai Xu, Li Zhao
Summary: A highly sensitive detection platform for heparin was developed using a cationic fluorescent dye (cresyl violet acetate) as a fluorescence probe. The platform demonstrated high selectivity towards heparin and achieved detection in both HEPES solution and serum.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Lopamudra Roy, Nivedita Pan, Susmita Mondal, Ria Ghosh, Md. Nur Hasan, Neha Bhattacharyya, Soumendra Singh, Kallol Bhattacharyya, Arpita Chattopadhyay, Samir Kumar Pal
Summary: The study focuses on the interaction between reactive oxygen species (ROS) and a spectroscopic probe called Rose Bengal (RB), encapsulated in nanoscopic sodium dodecyl sulphate (SDS) micelles and entrapped in microscopic nylon 66 solid matrix. The research demonstrates efficient interaction between ROS and RB-SDS, and investigates the mechanism of hydroxyl radicals generation. Based on these findings, a prototype device utilizing RB embedded in a nylon thin film for quantification of ROS in extracellular fluids and food materials was developed.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Maria Cristina Caggiani, Germana Barone, Paolo Mazzoleni
Summary: Raman spectroscopy is commonly used for studying glassy materials in cultural heritage, but it is more difficult to interpret the spectra and apply the technique with portable instruments. In contrast, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) can be used in archaeometric investigations as it is portable and non-invasive. However, there is limited application of this technique to historical glasses. This exploratory work demonstrates the potential of DRIFTS, in combination with portable X-ray Fluorescence (pXRF) and EDS microanalyses, for studying the composition and alteration of glass samples in cultural heritage.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yifan Li, Li Jiang, Zizhen Yu, Cailing Jiang, Fei Zhang, Shangzhong Jin
Summary: In this study, a SPRi/SERS dual-mode biosensor was developed using AuNPs as the reinforcing medium for high throughput and sensitivity detection of three cervical cancer markers. The sensor showed practicality and provided reliable data to prevent false positive or false negative detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Lingfeng Duan, Xinyu Liu, Xin Meng, Lulu Qu
Summary: This study successfully prepared a plasmonic substrate with multiple plasmonic hotspots for highly sensitive detection of pesticide residues. The substrate exhibited high SERS enhancement and excellent detection sensitivity, and also demonstrated flexibility for easy contact with irregular surfaces and collection of target molecules. The excellent performance of the substrate was attributed to the enhancement of the electromagnetic field around the hotspots, as confirmed by 3D-FDTD simulation. Using a portable Raman spectrometer, the substrate achieved in situ analysis of chlorpyrifos residues on peach with high accuracy.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiaosong Sun, Qihao Cui, Wenyue Dong, Qian Duan, Teng Fei
Summary: Conjugated porous polymers (CPPs) are promising sensing materials and their application in aqueous media is limited. In this study, we synthesized CPPs with porous structure and prepared nanoparticles, enabling efficient photoluminescence sensing of nitroaromatic explosives in aqueous phase.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Review
Archaeology
S. Sylaiou, P. Dafiotis, D. Koukopoulos, K. Koukoulis, R. Vital, A. Antoniou, Chr. Fidas
Summary: This manuscript discusses the growing importance of Extended Reality (XR) in art exhibitions. It explores the technologies used, design issues, evaluation metrics, and aims of XR exhibitions. The research focuses on the current types of technologies used, primary design considerations, and methods to enhance user experience. The paper also examines evaluation criteria and the use of virtual humans for increased engagement. Additionally, it thoroughly discusses parameters affecting user experience and offers suggestions for optimizing design and future directions.
JOURNAL OF CULTURAL HERITAGE
(2024)
Article
Archaeology
Justin J. L. Kimball, Ruben With, Christian Lochsen Rodsrud
Summary: Micro-CT (μCT) has been increasingly used in the cultural heritage sector to understand past cultures and their materials. In the case of the Gjellestad ship from the Viking Age, μCT was used to document and conserve the deteriorated organic and metallic materials. A georeferencing system was developed to retain important stratigraphic and position information, allowing for spatial positioning using 3D GIS. The use of μCT has shown positive impact on the documentation, conservation, and reconstruction of cultural heritage.
JOURNAL OF CULTURAL HERITAGE
(2024)
Article
Archaeology
Carlo Battini, Umberto Ferretti, Giorgia De Angelis, Roberto Pierdicca, Marina Paolanti, Ramona Quattrini
Summary: This research presents a method for recognizing historical building elements using a deep learning system. By leveraging synthetic point clouds to generate 3D models, the proposed approach achieves high accuracy in the experiments conducted on a newly synthetic dataset.
JOURNAL OF CULTURAL HERITAGE
(2024)
Article
Archaeology
Jingwen Zhang, Tianlin Ren
Summary: In the era of digital information, metadata and ontology technology have promoted the management and utilization of museum collections. This study focused on ancient Chinese ceramics and proposed solutions for the shortcomings in their information management through metadata analysis and ontology construction. The structure of the ontology was visualized to provide a clearer understanding of ancient Chinese ceramics.
JOURNAL OF CULTURAL HERITAGE
(2024)
Article
Spectroscopy
Jie Chen, Fangrong Hu, Shangjun Lin, Zihang Song, Zhitao Duan, Longhui Zhang, Mingzhu Jiang
Summary: In this research, a method for highly sensitive detection of miRNA-21 using a THz metamaterial sensor and HCR technology was proposed. By combining a capture hairpin probe with gold nanoparticles and amplifying the signal through HCR technology, low-concentration miRNA detection was successfully achieved. The results showed good specificity and sensitivity of the method, paving the way for low-cost, easy-to-operate, and marker-free miRNA detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Megha, Paramjit Kaur, Kamaljit Singh
Summary: This study presents the stimuli modulated fluorescence properties of an imidazole-based molecular probe in the solid state. The probe displayed aggregation induced emission activity and intense solid-state fluorescence emission, as well as repetitive cycles of reversible mechanochromism and acidochromism. The solid-state emission was attributed to intermolecular interactions in the highly twisted conformation of the probe.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Nana Adwoa Nkuma Johnson, Selorm Yao-Say Solomon Adade, Suleiman A. Haruna, John-Nelson Ekumah, Yongkun Ma
Summary: This study investigated the prospects of using near-infrared (NIR) spectroscopy and effective variable selection algorithms for quantifying phytochemical compounds in chickpea beverages. The competitive adaptive reweighted sampling-partial least squares (CARS-PLS) model showed superior performance in predicting biochanin A, chlorogenic acid, pcoumaric acid, and stigmasterol.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yafei Li, Yanming Ma, Chuantao Zheng, Di Yu, Lien Hu, Shuo Yang, Fang Song, Yadan Li, Shuanghai Liu, Zhanrui Zhang, Yu Zhang, Yiding Wang, Frank K. Tittel
Summary: To effectively monitor gas explosion and coal spontaneous combustion in coal mine, an intrinsically safe and explosion-proof dual-gas sensor system was developed for methane (CH4) and carbon monoxide (CO) measurement. The system achieved different measurement ranges using laser scanning and gas cells, and improved stability and accuracy through gas pre-treatment and temperature compensation algorithm.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Hao Shen, Jinghang Xie, Wenjing Gao, Li Wang, Liangqiang Chen, Heng Qian, Shaoning Yu, Bin Feng, Fan Yang
Summary: Accurate and efficient bacterial typing methods are crucial to microbiology. Fourier transform infrared (FT-IR) spectroscopy enables highly distinguishable fingerprint identification of closely related bacterial strains by producing highly specific fingerprints of bacteria, which is increasingly being considered as an alternative to genotypic methods. In this study, a simplified and reliable procedure for sample preparation was developed, data analysis procedure was optimized, and the FT-IR detection limit was evaluated. These key fundamentals will better promote future application of FT-IR-based bacterial typing.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Priyanka Mukherjee, Titas Kumar Mukhopadhyay, Manini Mukherjee, Pritam Roy, Rina Ghosh, Pinki Saha Sardar, Sanjib Ghosh
Summary: Conventional steady state and time resolved fluorescence studies are not effective in identifying specific tryptophan residues involved in the interaction between a multitryptophan protein and a quencher. This study demonstrates the involvement of buried Trp 310 residue and Tyr 320 residue in the interaction with acrylamide using low temperature phosphorescence spectra and molecular docking studies.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Man Li, Xiping Zhu, Jiaman Peng, Shaohui Zheng
Summary: This article utilizes density functional theory (DFT) and time-dependent density functional theory (TDDFT) to study a series of quinquethiophene compounds functionalized with S,S-dioxide and side alkyl chains. It successfully reproduces the experimental UV-Vis absorption and fluorescence emission spectra and provides insight into the effects of sulfur di-oxidation and side chain engineering on the absorption and fluorescence of oligothiophene.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiang Li, Jun Wu, Xiashi Zhu
Summary: In this study, N-S-Na co-doped carbon quantum dots with high fluorescence quantum yield and exceptional optical properties were synthesized using a one-step hydrothermal method. A fluorescence on-off-on sensor was constructed, which exhibited rapid response, exceptional sensitivity, excellent stability, remarkable selectivity, and robust anti-interference performance. The mechanism of the on-off-on fluorescence of the carbon quantum dots was investigated, demonstrating the significant potential of carbon nano-functionalized materials for drug detection through fluorescence sensing.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
