Journal of Applied Spectroscopy最新文献_第3页

Raman Spectroscopy of Multilayer Graphene Structures with Various Twist Angles Between Layers 层间不同扭转角多层石墨烯结构的拉曼光谱研究

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-09-11 DOI: 10.1007/s10812-025-01970-6

D. P. Borisenko, N. I. Kargin, M. G. Rybin

引用次数: 0

Elemental (XRF) and Crystalline (XRD and Micro-Raman) Analyses of Moroccan Ornamental Stones 摩洛哥观赏石的元素（XRF）、晶体（XRD和微拉曼）分析

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-09-11 DOI: 10.1007/s10812-025-01978-y

Salam Khrissi, Mustapha Haddad, Lahcen Bejjit, Saadia Ait Lyazidi, Mohamed El Amraoui, Houda Lifi, Christophe Falguères

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Multivariate Classification of Geographical Origin of Herbal Medicines Using Terahertz Pulsed Absorption Spectroscopy 用太赫兹脉冲吸收光谱对中药地理来源的多元分类

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-09-11 DOI: 10.1007/s10812-025-01973-3

P. S. Kolodochka, D. A. Korolko, P. A. Kulikovskaya, A. V. Lyakhnovich, Xi Hongzhu, Xu Wei, M. A. Khodasevich, Shu Jie

引用次数: 0

Synthesis and Analysis of Fluorescent Carbon Dots Derived from Plant Material 植物源荧光碳点的合成与分析

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-09-11 DOI: 10.1007/s10812-025-01972-4

A. V. Bahdanava, J. Zhang, N. V. Bel’ko, M. V. Parkhats, V. N. Chizhevsky, T. A. Kulahava, D. S. Mogilevtsev, X. Zhang

{"title":"Synthesis and Analysis of Fluorescent Carbon Dots Derived from Plant Material","authors":"A. V. Bahdanava, J. Zhang, N. V. Bel’ko, M. V. Parkhats, V. N. Chizhevsky, T. A. Kulahava, D. S. Mogilevtsev, X. Zhang","doi":"10.1007/s10812-025-01972-4","DOIUrl":"10.1007/s10812-025-01972-4","url":null,"abstract":"An investigation was carried out on the fluorescent properties of nanoparticles made by a hydrothermal method from an ethanolic extract of mulberry leaves. Our analysis confirmed the presence of carbon dot nanostructures exhibiting fluorescence emission peaking at 670 nm (excited at 405 nm) with a quantum yield of 45%. Photobleaching of the nanoparticles upon quasi-continuous excitation at 405 nm was observed with 10–20 s irradiation. Without illumination, partial fluorescence recovery was detected consisting of several percent within one minute and over 25% after 16 h in darkness. Comparative spectral analysis of the initial leaf extract and the synthesized red-luminescent carbon dot fraction revealed similarities, suggesting the presence of unbound organic molecules with chromophore groups in the medium. The chromophores were found to accumulate in erythrocyte membranes, enabling cell visualization. However, these chromophores were found to be both cytotoxic and phototoxic. Thus, the synthesis of carbon dots from multicomponent plant extracts may result in incomplete carbonization and degradation of the chromophores, which can significantly alter our interpretation of the optical properties of these nanostructures.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"92 4","pages":"784 - 791"},"PeriodicalIF":1.0,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Luminescent Properties and Electronic Structure of Neodymium(III) Complexes with Carboxylic Acids 钕（III）与羧酸配合物的发光性质和电子结构

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-09-10 DOI: 10.1007/s10812-025-01963-5

I. V. Kalinovskaya

引用次数: 0

Impact of Cobalt and Molybdenum Impregnation on the Structural and Acidic Properties of Zeolite Y 钴钼浸渍对Y型沸石结构及酸性的影响

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-09-10 DOI: 10.1007/s10812-025-01979-x

Roufaida Mahdi, Hidaya Izza, Oussama Bacha, Ayoub Magroud

{"title":"Impact of Cobalt and Molybdenum Impregnation on the Structural and Acidic Properties of Zeolite Y","authors":"Roufaida Mahdi, Hidaya Izza, Oussama Bacha, Ayoub Magroud","doi":"10.1007/s10812-025-01979-x","DOIUrl":"10.1007/s10812-025-01979-x","url":null,"abstract":"Zeolite’s possession of Brønsted acid sites and impregnated metals in its pores renders it highly advantageous for catalytic transformations that necessitate the presence of both metallic and acidic active sites such as hydroisomerization and hydrocracking reactions. This study explores the influence of cobalt (Co) and molybdenum (Mo) impregnation on the structural and acidic properties of zeolite Y. A series of CoMo–zeolite Y catalysts was synthesized using the wet impregnation method with varying metal concentrations. Characterization using X-ray diffraction, Fourier-transform infrared spectroscopy (FTIR), and pyridine–FTIR revealed that the introduction of Co and Mo modified the distribution and strength of Brønsted and Lewis acid sites, while the crystallinity of the zeolite Y framework was preserved. Notably, the Co6Mo catalyst exhibited an optimal Lewis/Brønsted acid ratio, highlighting the potential of these materials for bifunctional catalytic applications. These findings contribute to understanding the interplay between metal loading and acid properties, laying the groundwork for future studies on catalytic performance.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"92 4","pages":"850 - 858"},"PeriodicalIF":1.0,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electron Photoemission Spectra of Molecular Structure and Quantum Fluctuation Theorem 分子结构的电子光发射光谱与量子涨落定理

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-09-10 DOI: 10.1007/s10812-025-01962-6

V. A. Tolkachev

{"title":"Electron Photoemission Spectra of Molecular Structure and Quantum Fluctuation Theorem","authors":"V. A. Tolkachev","doi":"10.1007/s10812-025-01962-6","DOIUrl":"10.1007/s10812-025-01962-6","url":null,"abstract":"The possibility of applying the quantum fluctuation theorem (QFT) to deep-lying electron orbitals in experimental atomic photon ↔ electron transition cross-section spectra is considered. Such spectra can only be obtained as a function of the difference between the experimentally measured excitation energy and final state energy. It is shown that spectra in this function do not satisfy the QFT. An assumption is made that the cross-section spectra are changed by screening of the transition excitations by an ensemble of neighboring electrons (orbitals). A screening coefficient that is constant across the observed spectrum and accounts for the reduction of the excitation energy (cross section) to the elementary starting state due to the screening is introduced into the QFT relations for such transition cross-sections. The spectra satisfy the QFT relations if screening is considered. Calculations using these assumptions are applied to electron x-ray photoemission spectra, inverse x-ray photoemission spectra, and electron energy loss (absorption) spectra. It is found that screening weakens the non-valence atomic orbital transition cross section by an order of magnitude or more, but only by several times for the outer (valence) ones. It was found that identification of the purely electronic transition position using QFT relations from the observed spectrum depended on the screening coefficient.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"92 4","pages":"705 - 710"},"PeriodicalIF":1.0,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spectral Analysis of Glycyrrhizic Acid, Lagochilin, Lagochirzine, and Their Derivatives 甘草酸、水仙碱、水仙碱及其衍生物的光谱分析

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-09-09 DOI: 10.1007/s10812-025-01975-1

A. V. Baranovsky, S. N. Sokolov, S. A. Fatykhava, P. S. Shabunya, R. S. Esanov, F. N. Tashpulatov, A. D. Matchanov

引用次数: 0

Deterioration Extraction for Ancient Murals Via a Decision Tree with a Deterioration Index 基于退化指数决策树的古代壁画退化提取

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-09-09 DOI: 10.1007/s10812-025-01977-z

Kezhen Qiao, Miaole Hou, Shuqiang Lyu, Lihong Li

{"title":"Deterioration Extraction for Ancient Murals Via a Decision Tree with a Deterioration Index","authors":"Kezhen Qiao, Miaole Hou, Shuqiang Lyu, Lihong Li","doi":"10.1007/s10812-025-01977-z","DOIUrl":"10.1007/s10812-025-01977-z","url":null,"abstract":"Mural painting is the earliest independent form of painting and involves the crystallization of ancient traditional painting arts. However, over time, various types of deterioration have influenced murals, among which the most common is the deterioration of the plaster layer. Existing extraction methods largely use the shape features obtained from digital images, which are influenced by the diversity of information on the murals. To overcome this drawback, hyperspectral technology was introduced to achieve accurate deterioration extraction. First, the spectral features of deterioration, with a focus on the plaster layer, were analyzed. The decision tree deterioration index was subsequently constructed to extract deterioration information. Combining the threshold of the near-infrared reflectance and the difference between the reflectance at 440 and 490 nm, our method was effective for complete extraction. The method achieved better visual results than other traditional extraction methods did. The precision, recall, F-measure, and overall accuracy were 0.7244, 0.7581, 0.7409, and 0.9680, respectively. Our method also has high threshold stability, yielding good results for other mural images.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"92 4","pages":"828 - 838"},"PeriodicalIF":1.0,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Antioxidant Properties of Parmeliaceae Lichens with Different Levels of Anthropo-Tolerance 不同人类耐受水平的Parmeliaceae地衣的抗氧化性能

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-09-09 DOI: 10.1007/s10812-025-01976-0

A. F. Meysurova, A. A. Notov, L. N. Skrypnik, A. V. Pungin

{"title":"Antioxidant Properties of Parmeliaceae Lichens with Different Levels of Anthropo-Tolerance","authors":"A. F. Meysurova, A. A. Notov, L. N. Skrypnik, A. V. Pungin","doi":"10.1007/s10812-025-01976-0","DOIUrl":"10.1007/s10812-025-01976-0","url":null,"abstract":"A complex analysis of the antioxidant properties of four epiphytic lichen species from the Parmeliaceae Zenker family with different anthropo-tolerance has been carried out. The antioxidant activity and the contents of phenolic compounds (PC) and carotenoids have been determined in Evernia divaricata (L.) Ach., E. prunastri (L.) Ach., Hypogymnia physodes (L.) Nyl., and H. tubulosa (Schaer.) Hav. using DPPH, FRAP, and ABTS methods. Correlation analysis showed a close relationship between the PC and carotenoids and the antioxidant activity (AOA). A multi-parameter biochemical sensitivity index (MPBSI) based on normalization of the values of these biochemical parameters has been calculated. The tolerance of species resistant to anthropogenic pollution was due to higher concentrations of PC and carotenoids and higher AOA. The MPBSI of Hypogymnia physodes was 8.43; of Evernia prunastri, 6.38. Species sensitive to various anthropogenic impacts were characterized by lower values of these parameters. The MPBSI of Hypogymnia tubulosa was 5.83; of Evernia divaricata, 1.56. The degree of the decrease in the MPBSI correlated with the level of vulnerability due to vegetation transformation resulting from woodland fragmentation, which led to changes in the microclimate. Photoprotection in Evernia species that have a bushy biomorph was due to a higher concentration of carotenoids. An increase in antioxidant activity in Hypogymnia representatives with leafy thalli was due to an increase in the PC content. A complex approach to the assessment of the biochemical parameters related to the antioxidant properties, with the determination of the values of the MPBSI index, was interesting for the further development of biomonitoring studies. This approach would make it possible to delve into the scales of anthropo-tolerance and would help clarify the mechanisms of adaptation of lichens to different types of anthropogenic impacts.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"92 4","pages":"820 - 827"},"PeriodicalIF":1.0,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0