Academic literature on the topic 'Spectral studies of lanthanide( III)'

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Journal articles on the topic "Spectral studies of lanthanide( III)"

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Arora Mukesh Sharma, Kishor, Mukesh Sharma, and K. P. Sharma. "Studies of Some Lanthanide(III) Nitrate Complexes of Schiff Base Ligands." E-Journal of Chemistry 6, s1 (2009): S201—S210. http://dx.doi.org/10.1155/2009/149837.

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The studies of 16 new lanthanide(III) nitrate complexes of Schiff base ligands are discussed. Schiff bases were obtained by the condensation of 2–methyl–4–N,N–bis–2' –cyanoethyl aminobenzaldehyde with aniline and 3 different substituted anilines. Lanthanide(III) nitrates,viz. gadolinium(III) nitrate, lanthanum(III) nitrate, samarium(III) nitrate and cerium(III) nitrate were chosen to synthesize new complexes. The complexes were characterized on the basis of physicochemical studiesviz. elemental analysis, spectral,viz. IR and electronic spectral and magnetic studies. TGA studies of some of the
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Chaudhary, Sakshi. "SYNTHETIC AND SPECTRAL STUDIES OF COMPLEXING BEHAVIOR OF ISOTHIO CYANATO COMPLEXES OF 4 [N-4-ETHOXY BENZALIDINE AMINO] ANTIPYRINE (C20H21N3O2)." Green Chemistry & Technology Letters 2, no. 3 (2016): 144–50. http://dx.doi.org/10.18510/gctl.2016.234.

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Trivalent Lanthanides behave as hard acid and thus are expected to form stronger stable complexes with ligands having N-donor atoms. Coordination number less than six are uncommon for the lanthanides. Substituted Pyrazolones have been reported to posses’ strong pharmaceutical properties.Complexes were prepared by adding 40 ml hot ethanolic solution of ligand (3M mol) to ethanolic solution of lanthanide (III) isothiocyanate (1M mol). Molar conduction, molecular weight, magnetic susceptibility, infrared and electronic spectroscopy were used to characterization of newly synthesized complexes
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Shyni, B., J. P. Remiya, and T. S. Sikha. "Synthesis, Characterization and Applications of Some Lanthanide(III) Complexes with Schiff Base Derived from L-Valine and Vanillin." Asian Journal of Chemistry 36, no. 7 (2024): 1549–58. http://dx.doi.org/10.14233/ajchem.2024.31646.

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Three lanthanide complexes of Sm(III), Nd(III) and Dy(III) with Schiff base ligand, potassium 2-((4-hydroxy-3-methoxybenzylidene)amino)-3-methylbutanoate derived from the condensation of vanillin and L-valine have been successfully synthesized by solid-state method. The elemental analysis, and spectral studies, such as CHN analysis, FT-IR & FIR, UV-Visible, HR-MS, TG/DTG analysis, photoluminescent spectra and conductivity measurements, were employed for the comprehensive characterization of these compounds. These data indicate that the synthesized Schiff base ligand act as tridentate (ONO)
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R., K. AGARWAL, AGARWAL HIMANSHU, and PRASAD RAM. "Synthesis, Magnetic and Spectral Studies of Lanthanide(III) Chloride Complexes of Hydrazones of Isonicotinic Acid Hydrazide." Journal of Indian Chemical Society Vol. 73, Nov 1996 (1996): 605–7. https://doi.org/10.5281/zenodo.5918056.

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Department of Chemistry. Lajpat Rai Post-Graduate College, Sahibabad-201 005 (Ghaziabad) <em>Manuscript received 9 June 1994. revised 27 October 1994. accepted 22 March 1995</em> Synthesis, Magnetic and Spectral Studies of Lanthanide(III) Chloride Complexes of Hydrazones of Isonicotinic Acid Hydrazide.
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Carac, Andreea, Rica Boscencu, Geta Carac, and Simona Gabriela Bungau. "Spectral Study of Some Lanthanides Complexes with Quaternary Pyridinium Ligands." Revista de Chimie 68, no. 10 (2017): 2265–69. http://dx.doi.org/10.37358/rc.17.10.5868.

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Some lanthanides complexes with two N-heterocyclic ligands derived from 4,4`-bipyridinium and 1,2-bis-(4-pyridinium) ethane (noted BP and BPE) were studied in presence of triethylamine and methanol in view of their application as cytotoxic agents. Absorption spectra have been recorded by UV-Vis spectroscopy during the complexation process in solution. The ligands demonstrate preferential arrangements in lanthanide�s electronic structure which is identified much clearly in ultraviolet range. La(III)-BP solution indicates absorption at lmax= 206 nm while La(III)-BPE at lmax of 208 nm. The soluti
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Anoop, M. R., P. S. Binil, K. R. Jisha, S. Suma, and M. R. Sudarsanakumar. "Synthesis, Spectral and Thermal Studies of Lanthanide(III) Complexes of Phenylbutazone." Journal of the Korean Chemical Society 55, no. 4 (2011): 612–19. http://dx.doi.org/10.5012/jkcs.2011.55.4.612.

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Hussein, Kameran Basim. "Preparation and characterization of Trivalent lanthanide ion complexes with tridentate mono azo Ligand." Journal of Wasit for Science and Medicine 1, no. 2 (2022): 31–43. http://dx.doi.org/10.31185/jwsm.7.

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The lanthanide complexes of 4-(2-pyridylazo)-resorcinol are prepared in solid state. All compounds have been characterized by means of elemental analysis (C.H.N) molar conductance, magnetic susceptibility and analytical spectral studies IR and UV-Visible spectral techniques. While the complexes have additionally been characterized by differential thermal analysis data and are formulated as [Ln(C11H8N3O2)3].H2O Ln = Pr3+ , Nd3+ and Sm3+ ; [Ln(C11H8N3O2)3] Ln = Eu3+, Er3+ and Yb3+ . The results of these studies on the synthesis and structural characterization, suggest neutral lanthanide complexe
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Geethalakshmi, V., N. Nalini, S. S. Sabithamala, D. Tamilselvi, and C. T. Theivarasu. "Synthesis and Spectral Studies of Piprazine Schiff Base Lanthanide(III) Complexes and their Microbial and Anticancer Activity." Asian Journal of Chemistry 34, no. 1 (2021): 155–61. http://dx.doi.org/10.14233/ajchem.2022.23460.

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A novel Schiff base ligand has been synthesized by the condensation reaction of 1-(2-amino ethyl)piprazine with o-vanillin in methanol solution. Using lanthanide(III) metal ions (Ln3+ = La3+, Ce3+, Pr3+, Nd3+, Sm3+ and Gd3+) in methanol, six complexes of piprazine Schiff base were synthesized. All the lanthanide(III) complexes were characterized by IR, UV, NMR, TG-DTA, X-ray diffraction analysis and photoluminence. According to the spectral analysis piprazine act as a bidentate monobasic donor coordinating through the azomethine nitrogen and a phenyl oxygen atom. Antimicrobial studies of the s
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Naik, Ganesh N., Raghavendra P. Bakale, Aishakhanam H. Pathan, Shashikala G. Ligade, Shreenivas A. Desai, and Kalagouda B. Gudasi. "2,4-Dichlorophenoxyacetic Acid Derived Schiff Base and Its Lanthanide(III) Complexes: Synthesis, Characterization, Spectroscopic Studies, and Plant Growth Activity." Journal of Chemistry 2013 (2013): 1–13. http://dx.doi.org/10.1155/2013/810892.

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2,4-Dichlorophenoxyacetic acid derived Schiff base (HL) and its lanthanide [La(III), Pr(III), Nd(III), Sm(III), Eu(III), Gd(III), Dy(III), Y(III)] complexes were synthesized and characterized by various spectroscopic (1H,13C, DEPT and 2D HMQC NMR, FT-IR, UV-Vis, and mass) techniques and other analytical methods. HL exhibits “E” and “Z” isomerism and was confirmed by variable temperature1H NMR studies. The spectral and analytical data reveals the bidentate coordination of HL to lanthanide(III) ion, through carboxylic acid group via deprotonation. Fluorescence spectrum of europium complex shows
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Athira, Janardhanan, Yesodharan Sindhu, Susamma Sujamol, and Kochukittan Mohanan. "Synthesis and spectroscopic characterization of some lanthanide(III) nitrate complexes of 3-[3-carboxyethyl-4,5- dimethylthiophene-2-yl)azo]pent-2,4-dione." Journal of the Serbian Chemical Society 76, no. 2 (2011): 249–61. http://dx.doi.org/10.2298/jsc100414025a.

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3-[3-Carboxyethyl-4,5-dimethylthiophene-2-yl)azo]pent-2,4-dione was synthesized by coupling diazotized 2-amino-3-carboxyethyl- 4,5-dimethylthiophene with acetylacetone. Based on various spectral studies and elemental analysis, an intramolecularly hydrogen bonded azoenol structural form was assigned for the ligand. This ligand is versatile in forming a series of lanthanide(III) complexes viz, lanthanum(III), cerium(III), praseodymium(III), neodymium(III), samarium(III) and gadolinium(III), which were characterized through various spectral studies, elemental analysis, magnetic susceptibility mea
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Dissertations / Theses on the topic "Spectral studies of lanthanide( III)"

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Cankut, Ahmet N. "Synthesis and luminescence studies of Ir(III) complexes and iridium/lanthanide dyads." Thesis, University of Sheffield, 2015. http://etheses.whiterose.ac.uk/10445/.

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This thesis is concerned with the preparation and photophysical studies of various Ir(III) complexes and Ir(III)/Ln(III) dyads. Chapter 1 provides an introduction to the background of d-metal and f-metal luminescence and their use in biological applications. The emphasis is on the use of Ir(III) chromophores based on phenylpyridine ligands to stimulate emission from Ln(III) ions via an energy-transfer mechanism (the ‘antenna effect’). Examples of these Ir(III)/Ln(III) dyads from literature are given. Chapter 2 describes the preparation of the complexes [Ir(fppy)2Lpytz] and [Ir(fppy)2Lpic] and
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Siang-YuJhan and 詹翔淯. "Syntheses and magnetic studies of hexanuclear cobalt(III)-lanthanide and dinuclear lanthanide complexes." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/09672723142896961677.

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碩士<br>國立成功大學<br>化學系碩博士班<br>101<br>This work contains two parts. In the first part, a 3d−4f heterometallic hexanuclear [CoIII2DyIII4(μ3-OH)2(salpa)4(NO3)4(OAc)4(H2O)2] (1) complex was synthesized from the reaction of Co(II) and Dy(III) ions with N-(2-hydroxybenzyl)-3-amino-1-propanol (H2salpa). The structure of complex 1 was determined by X-ray crystallography. Co was assigned as a CoIII ion, which is consistent with bond valence sum (BVS) calculations results. Because of the presence of diamagnetic CoIII ions, the magnetic properties of the heterometallic hexanuclear complex 1 can be attribute
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Hussain, Akhtar. "Studies On Lanthanide Complexes Showing Photo-activated DNA Cleavage And Anticancer Activity." Thesis, 2011. https://etd.iisc.ac.in/handle/2005/2428.

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This thesis work deals with different aspects of the chemistry of La(III) and Gd(III) complexes, their interaction with DNA and proteins, photo-induced cleavage of double-stranded DNA, photocytotoxic effect on cancer cells, cell death mechanism and cellular localization behaviour. Chapter I gives an introduction to the metal-based anticancer agents with special emphasis on clinically used drugs and the growing field of lanthanide therapeutics. An overview of the current strategies of cancer treatment, especially photodynamic therapy (PDT), is presented. Mode of small molecule-DNA interacti
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Hussain, Akhtar. "Studies On Lanthanide Complexes Showing Photo-activated DNA Cleavage And Anticancer Activity." Thesis, 2011. http://etd.iisc.ernet.in/handle/2005/2428.

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This thesis work deals with different aspects of the chemistry of La(III) and Gd(III) complexes, their interaction with DNA and proteins, photo-induced cleavage of double-stranded DNA, photocytotoxic effect on cancer cells, cell death mechanism and cellular localization behaviour. Chapter I gives an introduction to the metal-based anticancer agents with special emphasis on clinically used drugs and the growing field of lanthanide therapeutics. An overview of the current strategies of cancer treatment, especially photodynamic therapy (PDT), is presented. Mode of small molecule-DNA interactio
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Chandrashekhara, P. G. "Synthetic & structural studies on the complexes of lanthanide(III) nitrates with N-Alkylphenothiazines." Thesis, 1999. http://hdl.handle.net/2009/1372.

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Chin, Sheng-Fei, and 金聖斐. "I. Lanthanide (III) Psomoted Aldol Condensation of Enones and Aldehydes II. Synthetic Studies of Enterocin." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/66493012952254153743.

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碩士<br>國立中正大學<br>化學研究所<br>85<br>PART I. LANTHANIDE (III) PROMOTED ALDOL CONDENSATION OF ENONES AND ALDEHYDES.1,2 - and 1,4 - additions to acyclic a,b- unsaturated carbonyl systems are wellprecedented carbon-carbon bond forming reactions. In contrast , the aldol con-densation at the saturated a-carbon of enones ( a'-alkylation ) is quite pro-blematic. A number of recent studies have focused on the alkylation of the sp2a-carbon ( a-alkylation ), but very little worked has been carried out o
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Γεωργοπούλου, Αναστασία. "Σύνθεση, δομικός χαρακτηρισμός, φασματοσκοπικές και μαγνητικές μελέτες πολυπυρηνικών ομομεταλλικών 3d και ετερομεταλλικών 3d-4f συμπλόκων". Thesis, 2011. http://hdl.handle.net/10889/5106.

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Με σκοπό τη μελέτη της χημείας ένταξης του υποκαταστάτη δι-2,6-(2-πυριδυλοκαρβονυλο) πυριδίνη (dpcp) με μέταλλα μετάπτωσης 3d, παρασκευάστηκαν οι τετραπυρηνικές πλειάδες [Cu4(N3)2{pyCO(OMe)pyCO(OMe)py}2(MeOH)2](ClO4)∙2MeOH (1∙2MeOH) και [Co4(N3)2(NO3)2{pyCO(OMe)pyCO(OMe)py}2]∙0.5MeOH (2∙0.5MeOH), η εξαπυρηνική πλειάδα [Ni6(CO3)(N3)6{pyCOpyC(O)(OMe)py}3(MeOH)2(H2O)][Ni6(CO3)(N3)6 {pyCOpyC(O)(OMe)py}3(MeOH)3](ClO4)2 (3∙1.8MeOH) και η διπυρηνική πλειάδα [Fe2{pyCO(OMe)py(Η)CO(OMe)py}2(MeO)2](ClO4)2∙(4∙MeOH). Στην συνέχεια μελετήθηκε η χημεία ένταξης του ίδιου υποκαταστάτη με μέταλλα 3d και 4f και
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Book chapters on the topic "Spectral studies of lanthanide( III)"

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"Case III The Spectral Analysis of the Visual Evoked Potentials of Normal and Congenital Dull Children (Down’s disease)." In Case Studies in Time Series Analysis. WORLD SCIENTIFIC, 1993. http://dx.doi.org/10.1142/9789812796516_0006.

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van Wesemael, Bas. "Spectral mapping of soil organic carbon." In Advances in measuring soil health. Burleigh Dodds Science Publishing, 2021. http://dx.doi.org/10.19103/as.2020.0079.18.

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This chapter first reviews recent pilot studies covering limited areas often with exposed bare soils. Then we focus on the challenges for large-scale application of spectral mapping when the soil and parent material are heterogeneous and surface conditions are unknown. In order to deal with these constraints we discuss i) calibration of spectral models based on large spectral libraries, ii) surface conditions that disturb the soil signal, and iii) time series of images in order to delimit cropland fields and increase the extent of bare soil that can be mapped. Finally, a case study deals with
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Chaudhary, Vishrut. "STRUCTURAL AND THERMAL DECOMPOSITION STUDIES OF Co(III) AND Ni(II) METAL COMPLEXES OF SCHIFF BASES." In Advances in Chemical Science: Exploring New Frontiers. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/nbennurch151.

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In this paper two types of complexes of Co(III) and Ni(II) with Schiff bases are studied. The synthesis of complexes of above metal ion with 2;4 dihydroxy benzaldehyde isoicotinic acid hydrazide, 4-methyl2, 6 diformyl phenol isonicotic acidhydrazide as primary and thiosalicylic acid (TSA), 2 aminothiophenol (2-ATP) and 2- thiophene acitic acid (2-TPA) as coligand have been reported. The mixed ligand complexes are characterized on basis andlytical spectral and thermal decomposition
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"Antifungal and Spectral Studies of Cr(III) and Mn(II) Complexes Derived from 3,3'-Thiodipropionic Acid Derivative." In Inorganic Chemistry. Apple Academic Press, 2011. http://dx.doi.org/10.1201/b12873-20.

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Plastino, A., and M. T. Martin. "Generalized Information Measures and the Analysis of Brain Electrical Signals." In Nonextensive Entropy. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780195159769.003.0020.

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The traditional way of analyzing brain electrical activity, on the basis of electroencephalogram (EEG) records, relies mainly on visual inspection and years of training. Although it is quite useful, of course, one has to acknowledge its subjective nature that hardly allows for a systematic protocol. In order to overcome this undesirable feature, a quantitative EEG analysis has been developed over the years that introduces objective measures. These reflect not only characteristics of the brain activity itself, but also clues concerning the underlying associated neural dynamics. The processing o
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"NIR emission in sol-gel glass-ceramic materials singly- and doubly-doped with RE3+ ions." In Book of Abstracts - RAD 2025 Conference. RAD Centre, Niš, Serbia, 2025. https://doi.org/10.21175/rad.abstr.book.2025.47.10.

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Due to the rapid development of telecommunication technologies, there is currently significant interest in materials exhibiting ultra-broadband near-infrared emission, which could be used as optical amplifiers. The optical properties of Nd3+ ions have been widely investigated considering their efficient emission in the NIR spectral range. Co-doping with rare-earth ions (RE3+) is one of several strategies to improve the luminescent performance of optical materials due to the possibility of energy transfers between them. Systems doubly-doped with Nd3+ and Pr3+ ions could be predisposed to be use
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Conference papers on the topic "Spectral studies of lanthanide( III)"

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Kostova, I., N. Trendafilova, I. Georgieva, et al. "Experimental and Theoretical Studies on Biologically Active Lanthanide (III) Complexes." In PERSPECTIVES IN VIBRATIONAL SPECTROSCOPY: Proceedings of the 2nd International Conference on Perspectives in Vibrational Spectroscopy (ICOPVS 2008). AIP, 2008. http://dx.doi.org/10.1063/1.3046225.

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Lakshman, S. V. J. "Spectral Studies Of Pr(III), Nd(III), Er(III), And Tm(III) Ions In Certain Phosphate And Sulphate Glasses." In 1989 Intl Congress on Optical Science and Engineering, edited by Giancarlo C. Righini. SPIE, 1989. http://dx.doi.org/10.1117/12.961479.

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Kachhawa, Chanchal, Kanika Solanki, and H. S. Bhandari. "Electronic absorption spectral studies of Pr(III) chelates with some amino acids." In 2ND INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5032843.

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Bajaj, Annu, and Sushma Jain. "Studies on electronic spectral parameters of doped Nd(III) ion with therapeutically important ligands in dioxane solvent." In INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2015): Proceeding of International Conference on Condensed Matter and Applied Physics. Author(s), 2016. http://dx.doi.org/10.1063/1.4946657.

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Bhardwaj, Chandra Kant, Kapil Ghai, and Abhilasha Mishra. "Synthesis, spectral, elemental analysis & antimicrobial studies of manganese (II) and iron (III) metal complexes with alprazolam drug as ligand." In INTERNATIONAL SCIENTIFIC AND PRACTICAL CONFERENCE “TECHNOLOGY IN AGRICULTURE, ENERGY AND ECOLOGY” (TAEE2022). AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0104887.

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Shakir Hanna, Safwat H., and B. Girmay-Gwahid. "Spectral characterization of water stress impact on some agricultural crops: III. Studies on Sudan grass and other different crops using handheld radiometer." In Remote Sensing, edited by Giovanna Cecchi, Edwin T. Engman, and Eugenio Zilioli. SPIE, 1999. http://dx.doi.org/10.1117/12.373091.

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Kurtz, Steven R. "InAsSb structures for III–V based infrared optoelectronics." In OSA Annual Meeting. Optica Publishing Group, 1992. http://dx.doi.org/10.1364/oam.1992.mhh2.

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The electronic properties of InAsSb structures have been characterized by a variety of infrared spectroscopies (absorption, photoluminescence, and magneto-optical) and detector spectral responsivity. In Sb-rich strained-layer superlattices (SLSs), the type II band offset extends the photoresponse to long wavelength when the difference in As composition between SLS layers is 10–20%. Consistent with a type II offset, effective mass measurements reveal that the hole quantum well is located in the biaxially compressed InSb layer of an InAsSb/InSb SLS. As an alternative to Sb-rich, InAsSb SLSs for
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Gallagher, Sarah, Roxana Tiron, and Frederic Dias. "A Detailed Investigation of the Nearshore Wave Climate and the Nearshore Wave Energy Resource on the West Coast of Ireland." In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-10719.

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The western coast of Ireland possesses one of the highest wave energy resources in the world and consequently is a promising location for the future deployment of Wave Energy Converters (WECs). Most wave climate studies for this region have focused primarily on the offshore area since it enjoys higher energy densities. However, recent studies have shown that nearshore locations offer a similar potential for the exploitation of wave energy as offshore sites [13]. Furthermore, the proximity of WEC devices to the shore will likely reduce losses in power transport, and facilitate access for mainte
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Shevchenko, O. V., I. N. Chernenko, E. V. Eliseeva, M. A. Medkov, and V. B. Shumatov. "DEVELOPMENT OF NEW GENERATION PHOTOSENSITIZERS BASED ON CHLORIN E6 WITH RARE EARTH ELEMENTS." In XI МЕЖДУНАРОДНАЯ КОНФЕРЕНЦИЯ МОЛОДЫХ УЧЕНЫХ: БИОИНФОРМАТИКОВ, БИОТЕХНОЛОГОВ, БИОФИЗИКОВ, ВИРУСОЛОГОВ, МОЛЕКУЛЯРНЫХ БИОЛОГОВ И СПЕЦИАЛИСТОВ ФУНДАМЕНТАЛЬНОЙ МЕДИЦИНЫ. IPC NSU, 2024. https://doi.org/10.25205/978-5-4437-1691-6-119.

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Complex of europium (III) with Chlorin e6 (as a widely used photosensitizer in photodynamic therapy, was obtained using targeted synthesis methods. The compounds were studied using infrared, luminescent and photoelectron spectroscopy. The luminescence of the complexes is manifested by emission bands in a wide spectral region from 400 to 700 nm, characteristic of both Eu3+ in complex compounds and Chlorin e6. An increase in the luminescence intensity of the Eu3+ ion in the red region during complex formation with Chlorin e6 was shown. It can be used to target light radiation to Chlorin e6 and,
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Innocenti, Alessio, Gianni Messeri, Miguel Onorato, and Carlo Brandini. "Analysis of Wave Fields During Ship Accidents in the North-Western Mediterranean." In ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/omae2022-78661.

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Abstract The occurrence of extreme waves in real sea conditions and their generation mechanisms are key elements in regional forecasts to improve the safety of navigation, especially in those severe conditions where large ships depart and adapt their routes based only on average wave parameters, as the significant wave height. In the present work we have analyzed a series of accidents occurred in the North-Western Mediterranean Sea to large passengers and cargo ships, involving injured people, damages and partial loss of cargo. We have performed phase-resolving numerical simulations based on t
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