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Relevant bibliographies by topics / Uv Spectroscopic Method

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Academic literature on the topic 'Uv Spectroscopic Method'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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Journal articles on the topic "Uv Spectroscopic Method"

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Ganesh, Tiwari* Viral Maheshwari Rohan Shakywanshi Rukhsar khan Dr. Bhoomi Patel. "Development of UV Spectroscopic Method of Dapagliflozin with Some Validation Parameter." International Journal of Pharmaceutical Sciences 3, no. 5 (2025): 42–54. https://doi.org/10.5281/zenodo.15317978.

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This research compiles information on the development of analytical methods for estimating Dapagliflozin, which will be valuable for future research on this drug and its impurities. The literature survey covers various analytical methods such as UV, RP-HPLC, HPTLC, and other techniques reported for Dapagliflozin, both alone and in combination with other drugs. The analysis of published data indicates that only a UV spectroscopic method (calibration curve method) has been reported for estimating Dapagliflozin in fixed-dose combination. Each technique is evaluated for its sensitivity, specificit

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*Harini, Uppada, Boddapu Divya, and Bonula Harshini. "DEVELOPMENT AND VALIDATION OF A UV SPECTROSCOPIC METHOD FOR DETERMINATION OF SOTAGLIFLOZIN." World Journal of Pharmaceutical Science and Research 4, no. 3 (2025): 114–20. https://doi.org/10.5281/zenodo.15561449.

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<strong>Background and Objective:</strong><strong> </strong>Sotagliflozin is recommended for patients to reduce the risk of heart failure, type 2 diabetes and chronic kidney diseases. Since there were no analytical methods reported for the estimation of Sotagliflozin till date, the present work aims to develop and validate a UV spectrophotometric method for the evaluation of Sotagliflozin in bulk. <strong>Method: </strong>By using Lab India UV spectrophotometer, the standard solution was scanned against blank in the range of 200-400 nm and the λ max was determined using UV Analyst softw

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Jyothsna, Modugula 1. *. Dr. Manohar Babu. S. 2. Manohar reddy. J. 1. and Sushma R. 1. "A STABILITY INDICATING METHOD DEVELOPMENT AND VALIDATION OF CLOZAPINE BY UV SPECTROSCOPIC METHOD IN BULK AND TABLET DOSAGE FORM." Journal of Scientific Research in Pharmacy 8, no. 5 (2019): 48–53. https://doi.org/10.5281/zenodo.2677994.

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<strong><em>ABSTRACT</em></strong> <strong><em>Objective:</em></strong><em> To develop a stability indicating method development and validation of Clozapine by UV spectroscopic method in bulk and tablet dosage form and validate a simple, precise and cost-effective UV spectrophotometric method for the estimation of Clozapine according to the ICH Q2 (R1) guideline. </em> <strong><em>Methods:</em></strong><em> standard Clozapine solution was scanned over UV-Visible range for its wavelength of maximum absorbance. Various calibration standards of Clozapine were prepared and absorbance was recorded

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Tiainen, Eija, Torbjörn Drakenberg, Tarja Tamminen, Kirsi Kataja, and Anneli Hase. "Determination of Phenolic Hydroxyl Groups in Lignin by Combined Use of 1H NMR and UV Spectroscopy." Holzforschung 53, no. 5 (1999): 529–33. http://dx.doi.org/10.1515/hf.1999.087.

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Summary Two independent spectroscopic methods are presented and compared for the quantitation of the phenolic hydroxyl groups in lignins. The combined information is used to further elucidate the character of the lignin samples examined. The UV method is based on the difference of the spectroscopic properties of the ionised and the nonionised phenol. The method using 1H NMR spectroscopy is based on the exchange of phenolic protons in D2O. The difference in integrated proton intensities in the sample dissolved in DMSO and the sample with additional 20% D2O is proportional to the phenolic proton

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Basavaiah, K., and A. V. Prasada Rao. "Preparation and Characterization of P-TSA Doped Tetraaniline NanorodsviaMicellar-Assisted Method." E-Journal of Chemistry 9, no. 3 (2012): 1175–80. http://dx.doi.org/10.1155/2012/679462.

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In this work, we report preparation and characterization of P-toluene sulphonic acid (P-TSA) doped tetraaniline nanorods by micellar assisted method using ammonium per sulphate (APS) as an oxidant. Here, PTSA acts as dopant as well as template for tetraaniline nanostructures. The synthesized tetraaniline nanorods have been well characterized by Fourier transform infrared spectroscopy (FTIR), FT Raman spectroscopy, UV-Visible spectroscopy (UV-Visible), Scanning electron microscopy (SEM) and thermogravimetry. The morphologies of tetraaniline were found to be dependent on molar ratios of N-phenyl

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Nguyen, Tho Truong, Thi Minh Cao, Hieu Van Le, and Viet Van Pham. "Investigation of Some Characterizations of Black TiO\(_2\) Nanotubes Via Spectroscopic Methods." Communications in Physics 29, no. 2 (2019): 189. http://dx.doi.org/10.15625/0868-3166/29/2/13762.

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The black TiO\(_2\) with substantial Ti\(^3+\) and oxygen vacancies exhibit an excellent photoelectrochemical water-splitting performance due to the improved charge transport the extended visible light response. In this study, black TiO\(_2\) nanotube arrays synthesized by the anodization method, and then, they have been investigated some characterizations by spectroscopic methods such as UV-visible reflectance (UV-vis DRS), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, and photoluminescence spectrum. The results showed that some highlighted properties of the black TiO2 n

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Guan, Li, Yifei Tong, Jingwei Li, Shaofeng Wu, and Dongbo Li. "An online surface water COD measurement method based on multi-source spectral feature-level fusion." RSC Advances 9, no. 20 (2019): 11296–304. http://dx.doi.org/10.1039/c8ra10089f.

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To overcome the shortcomings of UV-Vis absorbance spectroscopic methods, fluorescence spectroscopic methods or wet chemistry methods for COD measurement, an online detection method was developed and evaluated.

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Jyoti, Chourasiya* Archana Tiwari Aarti Nandwana. "Simultaneous Estimation of Fluconazole and Zinc Pyrithione By Uv Spectroscopy." International Journal of Pharmaceutical Sciences 3, no. 5 (2025): 1334–49. https://doi.org/10.5281/zenodo.15374756.

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Analytical method development is an approach to select an appropriate assay procedure to determine the composition of various formulations, to prove that particular analytical method is acceptable for use in pharmaceutical laboratories. By keeping all the major questions in mind present methodical evolution of analytical method development and validation is done, in which UV-spectroscopic methods are elaborated. Method development for simultaneous estimation of Zinc Pyrithione and Fluconazole was done in the present study. Literature review revealed that not a single method is reported for the

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Pellerin, S., J. M. Cormier, F. Richard, K. Musiol, and J. Chapelle. "A spectroscopic diagnostic method using UV OH band spectrum." Journal of Physics D: Applied Physics 29, no. 3 (1996): 726–39. http://dx.doi.org/10.1088/0022-3727/29/3/034.

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Nurani, Laela Hayu, Citra Ariani Edityaningrum, Irnawati Irnawati, et al. "Chemometrics-Assisted UV-Vis Spectrophotometry for Quality Control of Pharmaceuticals: A Review." Indonesian Journal of Chemistry 23, no. 2 (2023): 542. http://dx.doi.org/10.22146/ijc.74329.

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Spectroscopic method in the UV-Vis region is considered the most molecular spectrometric method for content determination of a single component. However, a lot of pharmaceutical dosage forms comprise two or more components which lead to peak overlapping. Moreover, in the chemical stability test, active pharmaceutical ingredient (API) was also found along with the degradation products, impurities, and adulterant compounds. UV-Vis spectroscopy is one of the methods of choice for the determination or quantification of a single component in pharmaceutical preparations. The pharmaceutical products

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Dissertations / Theses on the topic "Uv Spectroscopic Method"

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Wiberg, Kent. "Multivariate spectroscopic methods for the analysis of solutions." Doctoral thesis, Stockholm : Institutionen för analytisk kemi, Univ, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-110.

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Widemann, Thomas. "Spectroscopie uv-visible de l'atmosphere des planetes telluriques : mesures absorptives in-situ et par la methode des occultations stellaires." Paris 7, 1991. http://www.theses.fr/1991PA077098.

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Le travail qui constitue ma these de doctorat se repartit en deux grands volets, relatifs a trois experiences embarquees a bord de sondes d'exploration du systeme solaire, consacrees a l'etude des atmospheres des planetes telluriques: isav, pour l'etude in-situ de l'atmosphere de venus (chapitre 2), gomos, pour l'atmosphere de la terre (chapitre 4), et spicam, pour l'atmosphere de mars (chapitre 5). Ces deux dernieres experiences utilisent l'absorption due aux constituants atmospheriques par une methode d'occultation au limbe (occultations stellaires ou egalement solaires dans le cas de spicam

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De, Bock Veerle. "Analysis and interpretation of Aerosol Optical Depth values retrieved from a Brewer spectrophotometer at Uccle, Belgium." Doctoral thesis, Universite Libre de Bruxelles, 2018. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/277633.

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Aerosols are particles in the solid or liquid phase that are suspended in the atmosphere. They have an important influence on the atmospheric chemistry and physics, affect the tropospheric chemical composition, can reduce visibility and have important impacts on human health. Aerosols also influence the Earth’s radiation budget. Although a lot of research has been done to investigate the influence of aerosols on the climate, they remain key contributors to the uncertainties in current climate studies due to the lack of information concerning their temporal and spatial distribution. One of the

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Valverde, Juan. "Study of the modifications induced by various culinary and industrial treatments of pigment systems from immature pods of green beans (Phaseolus vulgaris L. ) : introduction of new analytical methods for the study of these systems." Paris 6, 2008. http://www.theses.fr/2008PA066677.

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La couleur des végétaux verts est un des critères importants d’appréciation de la qualité des aliments. Elle est due notamment aux chlorophylles, aux caroténoïdes et à leurs dérivés, molécules au rôle nutritionnel important. Les procédés culinaires ou de l’industrie alimentaire conduisent à des modifications des molécules qui composent les systèmes pigmentaires. Des études scientifiques récentes n’ayant pas retrouvé, dans certains conditions, de corrélation entre la couleur (déterminée par colorimétrie) et le contenue en pigments, on a étudié les modifications de la couleur et du contenu en pi

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Obolenskaya, L. N., E. V. Savinkina, and G. M. Kuzmicheva. "One-stage Synthesis of Thermally Stable Nano-anatase with High Photocatalytic Activity." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35154.

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Anatase nano-powder (TSP) was synthesized by annealing of peroxide-treated titanyl sulfate hydrate at 800°C. The product and intermediates (prepared at lower temperatures) were characterized by X-ray powder diffraction and IR spectroscopy. Their photocatalytic activity was studied in the model reaction of Methyl Orange degradation under UV irradiation. The properties of so-made samples were compared to the properties of the products of annealing naked titanyl sulfate hydrate under similar conditions (TS). Photocatalytic activity of the TSP samples is higher than photocatalytic activity of

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Tokode, Oluwatosin. "Photocatalytic destruction of volatile organic compounds from the oil and gas industry." Thesis, Robert Gordon University, 2014. http://hdl.handle.net/10059/1134.

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Heterogeneous photocatalysis is an advanced oxidation technology widely applied in environmental remediation processes. It is a relatively safe and affordable technology with a low impact on the environment and has found applications in a number of fields from chemical engineering, construction and microbiology to medicine. It is not catalysis in the real sense of the word as the photons which initiate the desired photocatalytic reaction are consumed in the process. The cost of these photons is by far the limiting economic factor in its application. From a technical standpoint, the inefficient

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HOOSHYARI, MARYAM. "Chemometrics Methods Applied to Non-Selective Signals in Order to Address Mainly Food, Industrial and Environmental Problems." Doctoral thesis, Università degli studi di Genova, 2020. http://hdl.handle.net/11567/999673.

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Chemometrics is a chemical discipline that uses mathematical and statistical methods in order to extract useful information from multivariate chemical data. Moreover, chemometrics is applied to correlate quality parameters or physical properties to analytical instrument data such as calculating pH from a measurement of hydrogen ion activity or a Fourier transform interpolation of a spectrum. Aim of this thesis project is to develop chemometrical strategies for the elaboration and the interpretation of non-selective complex data in order to solve real problems in food, industry and environmenta

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Szotkowski, Radek. "Gelové polymerní elektrolyty s nanočásticemi." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-319296.

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This master‘s thesis concerns gel polymer electrolytes formed on a methyl methacrylate base with selected types of nanoparticles. In the thesis are also analyzed the methods for measuring electrochemical properties. The practical portion deals with sample preparations of gel polymer electrolytes with different contents of alkaline salt in a solvent, creating gels with different nanoparticle content and comparing gel polymer electrolytes polymerized with heat and UV radiation. The thesis deals with the evaluation of these samples from the viewpoint of electrical conductivity and potential windo

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Selig-Parthey, Ulrike. "Methods of Nonlinear Femtosecond Spectroscopy in the Visible and Ultraviolet Regime and their Application to Coupled Multichromophore Systems." Doctoral thesis, 2012. https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-74356.

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Time-resolved spectroscopic studies of energy transfer between molecules in solution form a basis for both, our understanding of fundamental natural processes like photosynthesis as well as directed synthetic approaches to optimize organic opto-electronic devices. Here, coherent two-dimensional (2D) spectroscopy opens up new possibilities, as it reveals the correlation between absorption and emission frequency and hence the full cause-and-effect chain. In this thesis two optical setups were developed and implemented, permitting the recording of electronic 2D spectra in the visible and in the h

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Alves, Ana Rita Ribeira. "Bioremediation : validation of spectroscopic methods for the analysis of Cr 6+ internalisation and reduction of Cr 6+ to Cr 3+ by Pseudomonas alcaliphila." Master's thesis, 2015. http://hdl.handle.net/10451/26746.

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Trabalho Final de Mestrado Integrado, Ciências Farmacêuticas, Universidade de Lisboa, Faculdade de Farmácia, 2014<br>Hexavalent chromium is a toxic by-product of several industries. Contamination of soil and water with Cr(VI) is prevalent all over the world, but conventional processes used to remove heavy metals from the environment are expensive and often not as effective as desired. Bioremediation with heavy metal-resistant microorganisms is a cheaper and promising approach to removal of toxic metals from soil and water. In this thesis the Cr(VI)-reducing capabilities of Pseudomonas alcaliph

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Books on the topic "Uv Spectroscopic Method"

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O, George W., Willis H. A, Royal Society of Chemistry (Great Britain), and Polytechnic of Wales, eds. Computer methods in UV, visible, and IR spectroscopy. Royal Society of Chemistry, 1990.

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O, George W., and Willis H. A, eds. Computer methods in UV, visible, and IR spectroscopy. Royal Society of Chemistry, 1990.

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(Editor), H. A. Willis, ed. Computer Methods in Uv, Visible, and Ir Spectroscopy. Royal Society of Chemistry, 1991.

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Panigrahi, Muktikanta, and Arpan Kumar Nayak. Polyaniline based Composite for Gas Sensors. IOR PRESS, 2021. http://dx.doi.org/10.34256/ioriip212.

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In this research work, we have demonstrated the synthesis, spectroscopic characteristics, thermal behaviour and DC conductivity of a few nanostructured composites, substituted conducting polymers (ICPs) and composites of ICPs. The physical properties of aforementioned composites are significantly changed by the doping with HCl, H2SO4, HNO3, H3PO4, or acrylic acid. The charge transport properties of these polymeric materials have been studied in detail because of their potential application in gas sensors. In the current work, varieties of conducting polymer based materials such as PANI-ES/Cloi

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(Editor), I. I. Sobelman, and Vladimir A. Slemzin (Editor), eds. Current Russian Research in Optics & Photonics: New Methods & Instruments for Space & Earth Based Spectroscopy in Xuv, Uv, Ir< & Millimeter Waves (Proceedings ... Russian Research in Optics & Photonics). SPIE-International Society for Optical Engine, 1998.

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Book chapters on the topic "Uv Spectroscopic Method"

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Nixdorf, Suzana Lucy. "UV–Vis Spectroscopy." In Spectroscopic Methods in Food Analysis. CRC Press, 2017. http://dx.doi.org/10.1201/9781315152769-2.

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Braun, M., J. Y. Fan, W. Fuß, K. L. Kompa, G. Müller, and W. E. Schmid. "UV Laser Ionization Spectroscopy and Ion Photochemistry." In Methods of Laser Spectroscopy. Springer US, 1986. http://dx.doi.org/10.1007/978-1-4615-9459-8_48.

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Mennucci, Benedetta. "The Simulation of UV-Vis Spectroscopy with Computational Methods." In Computational Spectroscopy. Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527633272.ch5.

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Soloviov, Dmytro, Valentin Borshchevskiy, and Igor Chizhov. "Time-Resolved UV-VIS Spectroscopy of Microbial Rhodopsins." In Methods in Molecular Biology. Springer US, 2022. http://dx.doi.org/10.1007/978-1-0716-2329-9_8.

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Handen, Joseph D., and Igor K. Lednev. "Deep UV Resonance Raman Spectroscopy for Characterizing Amyloid Aggregation." In Methods in Molecular Biology. Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4939-2978-8_6.

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Chen, Yan. "Drug-to-Antibody Ratio (DAR) by UV/Vis Spectroscopy." In Methods in Molecular Biology. Humana Press, 2013. http://dx.doi.org/10.1007/978-1-62703-541-5_16.

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Leigh, Brian S., Diana E. Schlamadinger, and Judy E. Kim. "Structures and Dynamics of Proteins Probed by UV Resonance Raman Spectroscopy." In Biophysical Methods for Biotherapeutics. John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118354698.ch9.

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Improta, Roberto. "UV-Visible Absorption and Emission Energies in Condensed Phase by PCM/TD-DFT Methods." In Computational Strategies for Spectroscopy. John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118008720.ch1.

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Minyuk, Galina S., and Alexei E. Solovchenko. "Express Analysis of Microalgal Secondary Carotenoids by TLC and UV-Vis Spectroscopy." In Methods in Molecular Biology. Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-8742-9_4.

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Permyakov, Eugene A. "The Use of UV–Vis Absorption Spectroscopy for Studies of Natively Disordered Proteins." In Methods in Molecular Biology. Humana Press, 2012. http://dx.doi.org/10.1007/978-1-61779-927-3_24.

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Conference papers on the topic "Uv Spectroscopic Method"

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Si, Ganshang, Zhengang Li, Junfang Miao, Dongliang Xie, Zhenyun Zhang, and Yanchun Wang. "A close-range powder sample detection method based on UV Raman-fluorescence combined spectroscopy." In Advanced Fiber Laser Conference (AFL 2024), edited by Yan Feng and Guoqing Chang. SPIE, 2025. https://doi.org/10.1117/12.3059699.

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Lawson, Donald C. "The Effect of Extender Pigments on Corrosion Resistance and Gloss Retention of Topcoats." In CONFERENCE 2024. AMPP, 2024. https://doi.org/10.5006/c2024-20969.

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Abstract This study evaluates the gloss retention and corrosion resistance of different particle sized extender pigments via dispersion with various milling techniques. We examined high speed dispersion, planetary mixing, and media milling. Gloss retention and corrosion resistance were measured after accelerated testing methods that included cyclic salt fog with UV exposure (ASTM D5894) and EIS (electrochemical impedance spectroscopy) over steel and aluminum substrates. The dispersion blends were incorporated in a solvent-borne fluoroethylene vinyl ether (FEVE) resin and evaluated against comm

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Azizah, Ninna Arifatun Nurul, Sentot Budi Rahardjo, Witri Wahyu Lestari, and Soerya Dewi Marliyana. "Synthesis and Characterization of Copper Complex Chelated with Phenobarbital Ligand." In 8th International Conference on Advanced Material for Better Future. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-n2rlar.

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The research is intended to synthesize copper(II) with Phenobarbital (PB) complex in 1 : 4 mole ratio. The sole reflux method is designated to synthesize reactant within methanol solvent. Cu(II) complex is characterized using Atomic Absorption Spectrophotometry (AAS), UV-Vis Spectrophotometer, Fourier-transform Infrared Spectroscopy (FTIR), Thermogravimetric Analysis (TGA), Conductivity meter, and Magnetic Susceptibility Balance (MSB). The Cu(II)-PB complex signified 1 absorption peak at 517.5 nm with 2Eg → 2T2g transition. Complex is then composed by 6 electron donors of Cu ion-bound ligand,

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Melancon, Michael, Steve Hourcade, Amal Al-Borno, et al. "The Effect of Four Commercially Available Steel Decontamination Processes on the Performance of External Coatings." In CORROSION 2014. NACE International, 2014. https://doi.org/10.5006/c2014-4391.

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Abstract External coatings used for corrosion protection often have to perform under severely corrosive environments. One major concern regarding coating performance is the negative effect of soluble salts on the steel substrate at the time of coating application, particularly for marine maintenance coating applications. These salts impact the ability of the applied coating systems to protect the steel in several ways including osmotic coating blistering, promotion of under-film metallic corrosion and coating disbondment. This paper focuses on removal of soluble salts contamination by commerci

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Smith, Doug, and John M. Bronk. "Wet TG: Understanding the Effect of Hot, Distilled Water on the Glass Transition Temperature, Barrier Properties, and Performance of Fusion Bonded Epoxy Coatings." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-19470.

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Abstract Fusion-Bonded Epoxy (FBEs) coatings are a durable, dependable approach to corrosion-prevention for both inner-diameter and outer-diameter pipeline coatings. One attribute of an FBE that plays a significant role in the coating performance and operating temperature is the glass transition temperature (Tg). However, when a coating is subject to environmental conditions (water, chemicals, UV ((Ultraviolet) light, elevated temperatures, etc.) the glass transition temperature can be depressed from its applied state. This paper explores how to monitor the glass transition temperature depress

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Pan, Mengqiu, Maryam Eslami, Yuan Ding, Zineb Belarbi, David Young, and Marc Singer. "Methodology of Batch Inhibition Applied for Top and Bottom of the Line Corrosion Mitigation." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16751.

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Abstract Quaternary ammonium compounds that exist as a waxy solid at low temperatures typically exhibit excellent persistency when applied in batch corrosion inhibitors (BCI), which are one of the mainstays of corrosion protection for many integrity management strategies worldwide. The performance of these type of corrosion inhibitor is often evaluated in laboratory conditions, prior to field application. The most common laboratory method to characterize BCI involves the filming procedure called the dip and drip method, where the steel specimen is immersed in neat BCI for a few seconds before

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Forney, L. S., C. Thierolf, B. Toleno, and G. Parks. "UV Reflectance Spectroscopy of the Copper/Copper Oxide System for Assessment of Solderability." In ISTFA 2000. ASM International, 2000. http://dx.doi.org/10.31399/asm.cp.istfa2000p0147.

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Abstract Surface changes of copper and copper coupons coated with organic solderability preservative (OSP) after accelerated aging were measured using UV Differential Reflectance Spectroscopy. A chemometric method has been developed that allows correlation of the spectroscopic results with independent measurements of the solderability of the copper and copper/OSP coupons using a wetting balance or sequential electrochemical reduction analysis (SERA). Based on the results of this study, a versatile instrument for the assessment of the solderability of printed wiring boards has been demonstrated

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Wang, Liang-guo, and Glen Sachse. "Molecular Oxygen Detection Using Frequency Modulation Diode Laser Spectroscopy." In Laser Applications to Chemical Analysis. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/laca.1990.wa8.

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There are a variety of industrial and research applications for molecular oxygen (O2) sensors. Most existing oxygen sensors, however, are either intrusive and have slow response (e.g. electrochemical methods and mass spectrometry) or are expensive (e.g. UV laser-induced fluorescence). An attractive method for detecting O2 that is both non-intrusive and relatively inexpensive was first demonstrated by Kroll et al1 and involves the use of wavelength modulation (at 5 KHz) spectroscopy techniques with a GaAlAs diode laser. In this paper we extend this earlier work by making spectroscopic measureme

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Nassirzadehsaleh, Amirhossein, and Ahmet Aykaç. "A Comparative Study on Production of Graphene Quantum Dots from Coffee Beans and Tea Leaves Extract." In 8th International Students Science Congress. ULUSLARARASI ÖĞRENCİ DERNEKLERİ FEDERASYONU (UDEF), 2024. https://doi.org/10.52460/issc.2024.053.

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In recent years, the importance of nanoparticle synthesis and application has increased, and as a result, more research has been conducted on nanoscience and nanotechnology. In particular, research on the production of environmentally friendly, less wasteful, low-cost, and multifunctional nanomaterials has increased dramatically. Some studies have been conducted on natural organic waste materials such as coconut husk, nutmeg seed, mint leaves, coffee beans, and tea leaves for producing nanostructures. Using organic waste materials as a source of nanostructures helps us save on disposal costs a

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Druta, Alexandrina, Ion Lungu, Ana Popusoi, Tamara Potlog, Petru Bulmaga, and Roman Rusnac. "Spectroscopic properties of ZnPc(Cooh)4/Ch/Fe3O4 supramolecular architectures." In Conferința științifică națională cu participare internațională "Integrare prin cercetare și inovare", dedicată Zilei Internaționale a Științei pentru Pace și Dezvoltare. Moldova State University, 2025. https://doi.org/10.59295/spd2024n.79.

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This paper presents the synthesis of ZnPc(COOH)4/Ch/Fe3O4 supramolecular architectures at various ZnPc(COOH)4 and Ch/Fe3O4 concentrations explored in the synthesis process. Ch/Fe3O4 composite was prepared by a simple solution mixing-evaporation method. The validation of the synthesis was achieved through FTIR analysis and UV-Vis spectroscopy. FTIR of composite indicated an interaction between chitosan and Fe3O4 NPs. The chemical interaction of ZnPc(COOH)4 with Ch/F3O4 composite is confirmed by the shift of the signal from v(C=O)) of protonated COOH groups in the FTIR spectrum of ZnPc(COOH)4, a

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