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Thematische Bibliographien / Physico-chemical characterization by fluorescence / Zeitschriftenartikel

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Zeitschriftenartikel zum Thema „Physico-chemical characterization by fluorescence“

Autor: Grafiati

Veröffentlicht am 25. Mai 2024

Zuletzt aktualisiert am 31. Juli 2025

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1

Igor, B.A., AKODEDJROHOUN, et al. "Physico-chemical characterization of marble from Assiyo (Dassa-Zoumè) in Benin." Pharmaceutical and Chemical Journal 10, no. 3 (2023): 6–15. https://doi.org/10.5281/zenodo.13983918.

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The valorization of the natural resources located in Benin Republic, in particular, marble obtained from Assiyo (Dassa-Zoumè) was the purpose of this study. It was characterized to elucidate its properties for industrial applications. The results of the analysis by X-ray diffraction, infrared spectroscopy, X-ray fluorescence and thermal analysis showed that Assiyo marble is dolomitic limestone. This marble sample is basic with pH ≈ 8.6. The particle size analysis of the powder particles of these marbles showed two major size fractions: 35 % of the particles have a size between 250

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Igor, B.A. AKODEDJROHOUN, V. SAGBO Etienne, and DODOO-ARHIN David. "Physico-chemical Characterization of Calcitic Marble from Idadjo (Ouèssè) in Benin Republic." Chemistry Research Journal 8, no. 3 (2023): 35–44. https://doi.org/10.5281/zenodo.11304301.

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<strong>Abstract </strong>The objective of this study was to valorize the natural resources located in the Republic of Benin, in particular, marble obtained from Idadjo (Ouèssè). It was characterized to elucidate its properties for industrial applications. The results of the analysis by X-ray diffraction, infrared spectroscopy, chemical analysis by X-ray fluorescence and thermal analysis showed that the marble of Idadjo is pure calcite. This marble sample is very white and basic with pH ≈ 8.5. The particle size analysis of the powder particles of this marble showed two majo

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Daou, Claude, Mervat El Hoz, Amine Kassouf, and Bernard Legube. "Multivariate Monitoring of Surface Water Quality: Physico-Chemical, Microbiological and 3D Fluorescence Characterization." Water 12, no. 6 (2020): 1673. http://dx.doi.org/10.3390/w12061673.

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The primary objective of this study is to explore a water quality database on two Mediterranean rivers (the Kadisha-Abou Ali and El Jaouz rivers—located in north Lebanon), considering their physicochemical, microbiological and fluorescence characteristics. Principal Component Analysis (PCA) was applied to the matrix gathering physicochemical and microbiological data while the Common Components and Specific Weight Analysis (CCSWA) or ComDim was used for fluorescence excitation-emission matrices (EEMs). This approach provided complementary and valuable information regarding water quality in such

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Staninski, Krzysztof, and Stefan Lis. "Photophysical characterization of chosen Ln(III) macromolecular complexes." International Journal of Photoenergy 7, no. 3 (2005): 147–51. http://dx.doi.org/10.1155/s1110662x0500022x.

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Spectral characterization of N,N′-Bis(2,4-dihydroxobenzylidene)1,2-diaminobenzene (DHDA) complexes with chosen f- and d-metal ions are described. Physico-chemical properties of a series of complexes were studied in methanol solution using UV-VIS, IR and fluorescence spectroscopy. It was found that the excitation and fluorescence spectra of DHDA in water and methanol after being exposed to ultraviolet radiation, show very obvious photochromism. The formation of 1 : 1 complexes between4,4′,4″,4‴-(porphine-5,10,15,20-tetrayl)-tetrakis benzoic acid, (TCPPH2) and La(III), Eu(III) and Yb(III) in met

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Rabilou, Souley Moussa, Mahamadou Zeinabou, Sanda Mamane Ousmaila, Habou Issa, Mousbahou Malam Alma Maman, and Natatou Ibrahim. "Physico-chemical, mineralogical and structural characterization of a clay of Tanout (Zinder-Niger)." World Journal of Advanced Research and Reviews 16, no. 2 (2022): 1077–92. https://doi.org/10.5281/zenodo.7790630.

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The objective of this study is to identify the different mineral phases, the structural and textural properties of natural clay of Tanout in Zinder region (Niger) in order to have mineralogical data allowing its valuation. The methodology is based on a physicochemical characterization by coupling several analysis techniques (preliminary analyses, X-ray fluorescence, X-ray diffraction, thermos- gravimetric analysis, scanning electron microscopy, Brunauer-Emmett-Teller by adsorption of N<sub>2</sub> at 77 K). The results from these analyzes show that this clay has a low humidity rate, a low

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Bujor, Alexandru, Victorita Tecuceanu, Anamaria Hanganu, and Petre Ionita. "Synthesis and Structural Analysis of a Nitrobenzofurazan Derivative of Dibenzo-18-Crown-6 Ether." Chemistry 4, no. 4 (2022): 1696–701. http://dx.doi.org/10.3390/chemistry4040110.

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Nitrobenzofurazan derivatives are well known for their fluorescence, whilst crown ethers are known for their complexing capacity toward cationic species. In this study, we present the synthesis and structural characterization of a new derivative containing both nitrobenzofurazan moieties and a crown ether core. The new compound was obtained from dibenzo-18-crown-6 ether, which was first nitrated, reduced to the corresponding amine, and subsequently derivatized with NBD. Structural analyses performed by IR, NMR, UV–Vis, and MS confirmed its structure and physico-chemical behavior toward the com

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Rabilou Souley Moussa, Zeinabou Mahamadou, Ousmaila Sanda Mamane, Issa Habou, Maman Mousbahou Malam Alma, and Ibrahim Natatou. "Physico-chemical, mineralogical and structural characterization of a clay of Tanout (Zinder-Niger)." World Journal of Advanced Research and Reviews 16, no. 2 (2022): 1077–92. http://dx.doi.org/10.30574/wjarr.2022.16.2.1272.

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The objective of this study is to identify the different mineral phases, the structural and textural properties of natural clay of Tanout in Zinder region (Niger) in order to have mineralogical data allowing its valuation. The methodology is based on a physicochemical characterization by coupling several analysis techniques (preliminary analyses, X-ray fluorescence, X-ray diffraction, thermos- gravimetric analysis, scanning electron microscopy, Brunauer-Emmett-Teller by adsorption of N2 at 77 K). The results from these analyzes show that this clay has a low humidity rate, a low density, a slig

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Popa, Cristina L., Simona I. Dontu, Dan Savastru, and Elfrida M. Carstea. "Changes in Fluorescence of Aquatic Dissolved Organic Matter Induced by Plastic Debris." Materials 18, no. 7 (2025): 1602. https://doi.org/10.3390/ma18071602.

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Water contamination with plastic materials represents one of the most pressing environmental problems that the modern world is facing. In this context, the present paper aims to investigate the influence of fluorescent dissolved organic matter (FDOM) released by plastic materials on the aquatic bacterial fraction and evaluate the efficiency of fluorescence spectroscopy in identifying plastic FDOM in freshwater. To this purpose, river and tap water samples were contaminated in a controlled manner in the laboratory, and the water quality parameters and bacterial occurrence for these samples were

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Maravelaki, Pagona-Noni, Antonis Theologitis, Meral Budak Unaler, Chrysi Kapridaki, Kali Kapetanaki, and James Wright. "Characterization of Ancient Mortars from Minoan City of Kommos in Crete." Heritage 4, no. 4 (2021): 3908–18. http://dx.doi.org/10.3390/heritage4040214.

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This work characterizes ancient mortars used in construction of the Bronze Age Minoan port at Kommos in Crete. The port dates from c. 1850 BCE with port facilities at the harbor and residences on the Central hillside and the Hilltop. A Greek, Phoenician, and Roman sanctuary overlies the administrative center. The first step collected representative samples from the different construction phases, previous conservation interventions, exposure to different environmental factors, and different material composition. From these 10 mortar samples were analyzed using stereo- and digital microscopy, X-

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Sousa, F. K. A., I. A. Silva, W. S. Cavalcanti, Gelmires Araújo Neves, and Heber Carlos Ferreira. "Physico-Mineralogical Characterization: Bentonitic Clays Recently Found in Olivedos, Paraíba, Brazil." Materials Science Forum 820 (June 2015): 56–59. http://dx.doi.org/10.4028/www.scientific.net/msf.820.56.

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Used in various branches of the industry, bentonitic clays are considered a valuable mineral, used specially in the petroleum industry for manufacturing of fluids used the drilling of petroleum wells in long depth. Recently, a deposit of this valuable mineral was discovered in the town of Olivedos-PB. There are data that prove that this is a very poor and underdeveloped town. So, this work aims at the physico-mineralogical characterization of clays recently discovered and, this way, verify if they present similar characteristics which allow them to replace the clays from Boa Vista-PB, and if t

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Dadi, Nitin Chandra teja, Matúš Dohál, Veronika Medvecká, et al. "Physico-Chemical Characterization and Antimicrobial Properties of Hybrid Film Based on Saponite and Phloxine B." Molecules 26, no. 2 (2021): 325. http://dx.doi.org/10.3390/molecules26020325.

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This research was aimed at the preparation of a hybrid film based on a layered silicate saponite (Sap) with the immobilized photosensitizer phloxine B (PhB). Sap was selected because of its high cation exchange capacity, ability to exfoliate into nanolayers, and to modify different surfaces. The X-ray diffraction of the films confirmed the intercalation of both the surfactant and PhB molecules in the Sap film. The photosensitizer retained its photoactivity in the hybrid films, as shown by fluorescence spectra measurements. The water contact angles and the measurement of surface free energy dem

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Dadi, Nitin Chandra teja, Matúš Dohál, Veronika Medvecká, et al. "Physico-Chemical Characterization and Antimicrobial Properties of Hybrid Film Based on Saponite and Phloxine B." Molecules 26, no. 2 (2021): 325. http://dx.doi.org/10.3390/molecules26020325.

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This research was aimed at the preparation of a hybrid film based on a layered silicate saponite (Sap) with the immobilized photosensitizer phloxine B (PhB). Sap was selected because of its high cation exchange capacity, ability to exfoliate into nanolayers, and to modify different surfaces. The X-ray diffraction of the films confirmed the intercalation of both the surfactant and PhB molecules in the Sap film. The photosensitizer retained its photoactivity in the hybrid films, as shown by fluorescence spectra measurements. The water contact angles and the measurement of surface free energy dem

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Fadayini, O., N.A. Amenaghawon, and E.O. Aluyor. "Physico-Chemical and Mineralogical Characterization of Barite-Bearing Ores from Selected Locations in Nigeria." Nigerian Research Journal of Engineering and Environmental Sciences 7, no. 1 (2022): 125–35. https://doi.org/10.5281/zenodo.6722193.

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<em>Nigeria is naturally endowed with solid mineral reserves and must do everything necessary to harness and maximize these resources and unlock their potential. Hence, the research on Nigerian barites was examined in this study.  Barite-bearing ores were sourced from Azare (Bauchi State), Obi (Nasarawa State), and Obubra (Cross River State) in Nigeria and characterized to determine their properties. The physico-chemical characteristics revealed specific gravity of 4.02, 4.14, and 3.95, moisture content of 0.94%, 0.68%, and 0.57%, density of 4.60 g/cm<sup>3</sup>, 4.82 g/cm<sup>3</sup>, a

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Sena, Andressa S., Bacus Nahime, Elton C. Lima, Fausto A. Lobo, Jorge L. Akasaki, and Igor S. dos Santos. "Characterization of briquettes produced from eucalyptus wood waste generated in agro-industries." Revista Brasileira de Engenharia Agrícola e Ambiental 25, no. 11 (2021): 794–98. http://dx.doi.org/10.1590/1807-1929/agriambi.v25n11p794-798.

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ABSTRACT Boilers are widely used by industries and thermoelectric plants to generate renewable energy. However, when biomass is consumed, residues are generated, which for the most part cannot be discarded appropriately. This study investigated the reuse of eucalyptus wood waste with the goal of transforming the residue into resistant and durable briquettes for reuse in furnaces and boilers. The physico-chemical properties of the residue were studied in terms of chemical composition by X-ray fluorescence, and its crystalline structure was evaluated by X-ray diffraction. Both thermogravimetric

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Ayanda, Fatai Arolu, Mohd Firdaus Mohd Anuar, Syaharudin Zaibon, and Shamshuddin Jusop. "The Physico-Chemical and Mineralogical Characterization of Mg-Rich Synthetic Gypsum Produced in a Rare Earth Refining Plant." Sustainability 13, no. 9 (2021): 4840. http://dx.doi.org/10.3390/su13094840.

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The physical, chemical and mineralogical characterization of the constituents of magnesium-rich synthetic gypsum produced in a rare earth-refining plant located in Gebeng, Pahang, Malaysia was conducted through elemental chemical analysis, scanning electron microscopy with Energy Dispersive X-ray (EDX)-analyzer, thermal analysis, X-ray fluorescence and X-ray diffraction. The crystalline nature of the by-product was studied using FTIR spectroscopy. Elemental analysis confirmed the presence of Ca and Mg, which are essential macronutrients required by plants and this Ca alongside the high pH (9.1

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Chung, Chih Kit, Jomarien García-Couce, Yaima Campos, et al. "Doxorubicin Loaded Poloxamer Thermosensitive Hydrogels: Chemical, Pharmacological and Biological Evaluation." Molecules 25, no. 9 (2020): 2219. http://dx.doi.org/10.3390/molecules25092219.

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(1) Background: doxorubicin is a potent chemotherapeutic agent, but it has limitations regarding its side effects and therapy resistance. Hydrogels potentially deal with these problems, but several characterizations need to be optimized to better understand how hydrogel assisted chemotherapy works. Poloxamer 407 (P407) hydrogels were mixed with doxorubicin and physico-chemical, biological, and pharmacological characterizations were considered. (2) Methods: hydrogels were prepared by mixing P407 in PBS at 4 °C. Doxorubicin was added upon solutions became clear. Time-to-gelation, hydrogel morpho

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Benmehdi, Abdelilah, El Hassania Loukili, Mohamed Taibi, et al. "Comprehensive Characterization of Moroccan Honey Varieties (cedar, euphorbia, eucalyptus, carob, and thyme): Insights into Phytochemical and Physico-chemical Properties." ASEAN Journal of Science and Engineering 4, no. 3 (2024): 489–510. https://doi.org/10.17509/ajse.v4i3.75415.

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We analyzed five Moroccan honey varieties: cedar, euphorbia, eucalyptus, carob, and thyme, focusing on their physicochemical and phytochemical properties. Using gas chromatography-mass spectrometry, high-performance liquid chromatography, and X-ray fluorescence, we measured key parameters like pH, refractive index, moisture content, and Brix degree, comparing them to Codex Alimentarius standards. The chemical composition varied significantly between samples. We also evaluated antioxidant capacity through DPPH and total antioxidant assays. Methyl hepta-2,4-dienoate was predominant in euphorbia

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Ion, Rodica Mariana, Lorena Iancu, Madalina Elena David, et al. "Multi-Analytical Characterization of Corvins’ Castle—Deserted Tower. Construction Materials and Conservation Tests." Heritage 3, no. 3 (2020): 941–64. http://dx.doi.org/10.3390/heritage3030051.

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The aim of this paper is to analyze the construction materials (mortars) of an architectural monument (Deserted Tower (Lilly Tower) from Corvins’ Castle, Romania). The mortars were characterized following a multidisciplinary approach, combining macroscopic observation with petrographic microscopy, mineralogical analysis (X-ray diffraction) and elemental analysis (X-ray fluorescence), hydric properties, and color of representative samples of the monument. The results revealed the use of gypsum mortars (produced by lumps with higher Fe content), with minor concentrations of crystalline dolomites

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CHHURIA, MAMATA, and MALAYA RANJAN MAHANANDA. "CHARACTERIZATION OF FLY ASH AND ITS POTENTIAL SOURCE IN AGRICULTURAL SOIL AMENDMENT AS AN INTEGRATED NUTRIENT SUPPLEMENT FOR RICE PLANT." Pollution Research 44, no. 3-4 (2025): 321–34. https://doi.org/10.53550/pr.2025.v44i03-04.025.

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Fly ash, a byproduct of coal combustion in thermal power plants, holds promising potential as a sustainable soil amendment, especially in the agricultural sector. This study investigates the physico-chemical characterization of fly ash and evaluates its viability as an integrated nutrient supplement for rice (Oryza sativa) cultivation. A controlled pot experiment was conducted with four treatment levels of fly ash 10 g, 20 g and 30 g per pot alongside a control group. Photosynthetic pigments including chlorophyll a, chlorophyll b, total chlorophyll, and carotenoids, were measured at five inter

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Sarika, Raj, and Dhesingh Ravi Shankaran. "Fabrication and Characterization of Multifunctional Curcumin Loaded Poly(methyl methacrylate) Fluorescent Nanofiber Membrane." Journal of Nanoscience and Nanotechnology 21, no. 4 (2021): 2246–53. http://dx.doi.org/10.1166/jnn.2021.19070.

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This work aims at the development of curcumin loaded poly(methyl methacrylate) (CC-PMMA) fluorescent nanofiber membrane and the evaluation of its multifunctional characteristics. The nanofibers were created by electrospinning method. The conditions of the spinning were optimized to obtain beadless and smooth nanofibers. The physico-chemical characteristics of the nanofibers were studied by various techniques including, polarizing light microscope, FT-IR, inverted epi fluorescence microscope and HR-TEM. The HR-TEM results confirm the formation of nanofibers with the diameter in the range of 90–

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Uspenskaya, Elena V., Anton V. Syroeshkin, Tatiana V. Pleteneva, et al. "Nanodispersions of Polyelectrolytes Based on Humic Substances: Isolation, Physico-Chemical Characterization and Evaluation of Biological Activity." Pharmaceutics 13, no. 11 (2021): 1954. http://dx.doi.org/10.3390/pharmaceutics13111954.

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Natural polyelectrolytes, including in the form of complexes with colloidal particles, are increasingly used in pharmacy due to the possibility of regulated attachment of medicinal substances and their targeted delivery to the target organ. However, the formation, stability, and molecular-mass characteristics of polyelectrolyte nanodispersions (ND) vary depending on the nature and composition of the medium of their origin. This is due to the lack of standardized approaches to quality control and regulatory documentation for most natural ND. In this paper, we first introduced the isolation, fol

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Moacă, Elena-Alina, Claudia Geanina Watz, Daniela Flondor (Ionescu), et al. "Biosynthesis of Iron Oxide Nanoparticles: Physico-Chemical Characterization and Their In Vitro Cytotoxicity on Healthy and Tumorigenic Cell Lines." Nanomaterials 12, no. 12 (2022): 2012. http://dx.doi.org/10.3390/nano12122012.

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Iron oxide nanoparticles were synthesized starting from two aqueous extracts based on Artemisia absinthium L. leaf and stems, employing a simplest, eco-friendliness and low toxicity method—green synthesis. The nanoparticles were characterized by powder X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FT-IR), X-ray fluorescence analysis (XRF), thermal analysis (TG/DSC), and scanning electron microscopy (SEM). Lack of magnetic properties and the reddish-brown color of all the samples confirms the presence of hematite as majority phase. The FTIR bands located at 435 cm−1 and 59

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Yuan, Ju Long, Fei Yan Lou, Zhao Zhong Zhou, Zhi Wei Wang, and Bing Hai Lv. "Visualized Characterization of Slurry during CMP Based on LIF." Key Engineering Materials 315-316 (July 2006): 279–83. http://dx.doi.org/10.4028/www.scientific.net/kem.315-316.279.

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Chemical mechanical polishing has emerged recently as an indispensable processing technique in large scale integration. In chemical and mechanical polishing process, chemical and mechanical principle is the vital factor in the removal process. Little is known about what is occurring beneath a wafer during Chemical Mechanical Polishing (CMP) processes. The paper provides a LIF technology to visualize the fluid flow between the wafer and pad. In this paper, the experiment setup is built. And then, the images of fluorescence intensity excited by LIF have been obtained from CCD. Finally, the relat

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Noun, Farah, Evelyne Anastasia Jury, and Rafik Naccache. "Elucidating the Quenching Mechanism in Carbon Dot-Metal Interactions–Designing Sensitive and Selective Optical Probes." Sensors 21, no. 4 (2021): 1391. http://dx.doi.org/10.3390/s21041391.

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Overexposure to metals has significant adverse effects on human and animal health coupled with nefarious consequences to the environment. Sensitive tools to measure low contaminant levels exist, but often come at a high cost and require tedious procedures. Thus, there exists a need for the development of affordable metal sensors that can offer high sensitivity and selectivity while being accessible on a global scale. Here, carbon dots, prepared in a one-pot synthesis using glutathione and formamide, have been developed as dual fluorescent metal sensing probes. Following extensive characterizat

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Mansuriya, Bhargav D., and Zeynep Altintas. "Carbon Dots: Classification, Properties, Synthesis, Characterization, and Applications in Health Care—An Updated Review (2018–2021)." Nanomaterials 11, no. 10 (2021): 2525. http://dx.doi.org/10.3390/nano11102525.

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Carbon dots (CDs) are usually smaller than 10 nm in size, and are meticulously formulated and recently introduced nanomaterials, among the other types of carbon-based nanomaterials. They have gained significant attention and an incredible interest in the field of nanotechnology and biomedical science, which is merely due to their considerable and exclusive attributes; including their enhanced electron transferability, photobleaching and photo-blinking effects, high photoluminescent quantum yield, fluorescence property, resistance to photo-decomposition, increased electrocatalytic activity, goo

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Kama, M., A. Thiam, K. Faye, and B. Ndiaye. "Effect of roasting temperature and duration on the physico-chemical and sensory properties of the coffee-guinea pepper roasted blend." African Journal of Food, Agriculture, Nutrition and Development 25, no. 1 (2025): 25466–81. https://doi.org/10.18697/ajfand.138.24965.

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Coffee is one of the most widely consumed products in the world. In Senegal, coffee-Guinea pepper roasted blend is consumed by over 70% of the population, making it the most widely consumed type of coffee. In view of its high consumption, coffee-Guinea pepper roasted blend is increasingly being marketed. The products on the Senegalese market often lack taste and aroma. Although the taste and aroma of the coffee-Guinea pepper roasted blend vary according to the species and origins of the coffee-Guinea pepper, an unmitigated roasting temperature and duration can alter their physico-chemical char

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Khan, MAA, MS Saha, S. Sultana, and AN Ahmed. "Preparation and Characterization of White Carbon Black From Rice Husk." Journal of Environmental Science and Natural Resources 9, no. 2 (2017): 1–7. http://dx.doi.org/10.3329/jesnr.v9i2.32135.

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Generally white carbon black in a form of silica is used instead of carbon black as reinforcing filler for rubber compounding. In the present research white carbon black was prepared from rice husks in cost effective method with direct incineration of acid leaching rice husk. The physico-chemical properties of rice husk and the product of white carbon black obtained from rice husk were investigated by Thermogravimetry, Particle size analyzer, Scanning electron microscope; Fourier transformed infrared radiation (FTIR), X-ray fluorescence and X-ray difractometry analyses. It was found that the d

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Šuňovská, Anna, Miroslav Horník, Martin Pipíška, Juraj Lesný, Jozef Augustín, and Stanislav Hostin. "CHARACTERIZATION OF SOIL ADDITIVE DERIVED FROM SEWAGE SLUDGE." Nova Biotechnologica et Chimica 12, no. 2 (2013): 141–53. http://dx.doi.org/10.2478/nbec-2013-0016.

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Abstract The aim of the present work is to characterize the soil additive derived from sewage sludge as potentially economically acceptable material for agricultural production as well as for soil and environment protection. The soil additive consisting of sewage sludge obtained from the wastewater treatment plant Pannon-Víz Zrt. (Győr, Hungary) and agricultural byproducts represented by wastes from grain mill industry and crushed corn cobs was prepared using the low-capacity granulator equipment constructed by Energy Agency Public Nonprofit Ltd. (Hungary). The characterization of sewage sludg

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Martin, Georgianna L., Justin A. Ross, Shelley D. Minteer, David M. Jameson, and Michael J. Cooney. "Fluorescence characterization of chemical microenvironments in hydrophobically modified chitosan." Carbohydrate Polymers 77, no. 4 (2009): 695–702. http://dx.doi.org/10.1016/j.carbpol.2009.02.021.

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Mesrar, Laila, Mariam Akdim, Mohamed Lakrim, Omar El Aroussi, Iatimad Akhrif, and Raouf Jabrane. "The Physico-Mechanical Characteristics of the Clays in and After Doping With Metal Oxide Al2O3 in the Region of Fez (Morocco)." Present Environment and Sustainable Development 9, no. 1 (2015): 103–10. http://dx.doi.org/10.1515/pesd-2015-0006.

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Abstract Miocene marl is one of the widespread geological substrates in Fez vicinity (Central Morocco). In this study we proceed by a physicochemical characterization of the marl after doping with metal oxides, by various analytical techniques, namely the X-ray fluorescence, the mineralogical analysis, and dielectric property. The doping of these marl was conducted by solid oxides of Al2O3 at different percentages (5%, 10% and 15%). The results of chemical analysis showed the Al2O3 increase during doping. So, the mineralogical analysis of doped clays shows peaks' increases for kaolin. The marl

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Sakurai, Kenji, and Atsuo lida. "Near-Surface Chemical Characterization Using Grazing Incidence X-ray Fluorescence." Advances in X-ray Analysis 33 (1989): 205–11. http://dx.doi.org/10.1154/s0376030800019601.

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External X-ray total reflection occurs when collimated X-ray beams impinge on a smooth, flat surface of matter at a small glancing angle, typically a few mrad. With respect to the X-ray fluorescence technique, total reflection experiments have allowed the trace determination of solution samples using an X-ray mirror as a sample support. The grazing incidence X-ray fluorescence technique (GIF) is also suitable for near-surface element analysis of the material, because the penetration depth of X-rays is 10-1000 Å around the critical angle.

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Havrilla, George J., and Thomasin Miller. "Micro X-ray fluorescence in materials characterization." Powder Diffraction 19, no. 2 (2004): 119–26. http://dx.doi.org/10.1154/1.1752947.

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Micro X-ray fluorescence (MXRF) offers the analyst a new approach to materials characterization. The range of applications is expanding rapidly. Single point analysis has been demonstrated for nanoliter volumes with detection limits at the 0.5 ng level. MXRF can be used as an element specific detector for capillary electrophoresis. Elemental imaging applications include analysis of sample corrosion and polymers, use as a combinatorial chemistry screening tool, and integration with molecular spectroscopic imaging methods to provide a more comprehensive characterization. Three-dimensional elemen

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Hadfi, Abdallah, Said Ben Aazza, M'barek Belattar, Said Mohareb, and Ali Driouiche. "Study of the physico-chemical quality of the water of irrigation in Biougra circle along with highlighting the effectiveness of an inhibitor of calcium carbonate precipitation." Mediterranean Journal of Chemistry 7, no. 4 (2018): 272–85. http://dx.doi.org/10.13171/mjc74181121-hadfi.

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Localized irrigation is characterized by localized frequent and continuous water supply. It ensures the efficient use of water. However, this fertigation system suffers from the problem of clogging of the distributors. The present study aims to study the physico-chemical quality of the water of irrigation within the Biougra circle; analyze of the type of scale deposited in the water pipes and the highlight of the effectiveness of an inhibitor of calcium carbonate precipitation. This study was carried out at a temperature of 25°C, using the technical "LCGE". Indeed, the classification of irriga

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Boutarfa, Fares, Abdelaziz Idres, Zohir Mekti, et al. "Airborne dust pollution emitted by El Hadjar Metallurgical Complex: quantification, characterization, and occupational health hazards." Technology audit and production reserves 5, no. 3(73) (2023): 20–28. http://dx.doi.org/10.15587/2706-5448.2023.289353.

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The iron deposits of Ouenza and Boukhadra represent one of the main sources of iron ore supply for the Algerian steel industry. Being a fundamental wealth available to Algeria, the exploitation of iron ores and its use causes strong negative consequences on the environment, mainly by the expansion of dust, which will be a source of environmental degradation. The metallurgical industry is an integral part of the Algerian economy. Environmental problems that negatively affect the health of people and the environment is air pollution. These issues are relevant to the site and the town of Annaba,

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Mahesh, K. Singh, Sutradhar Sanjit, Paul Bijaya, Barman D., and Das Arijit. "Synthesis, characterization, luminescent properties and biological activity studies of mixed ligand complexes of nickei(II) with sulphur and some nitrogen donors." Journal of Indian Chemical Society, Feb 2013 (February 28, 2013): 163–68. https://doi.org/10.5281/zenodo.5764700.

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Department of Chemistry, Tripura University, Suryamaninagar-799 022, Tripura, India Department of Microbiology, Agartala Govt. Medical College, Agartala-799 006, Tripura (West), India Department of Chemistry, Govt. Degree College, Dharmanagar-799 251, Tripura (North), India <em>E-mail</em> : arijitdas_chem@rediffmail.com <em>Manuscript received online 23 March 2012, revised 18 April 2012, accepted 19 April 2012</em> Mixed ligand complexes of Ni<sup>ll</sup> ion with 1-cyano-1-carboethoxyethylene-2,2-dithiolate {CED<sup>2</sup>- = [S<sub>2</sub>C=C(COOC<sub>2</sub>H<sub>5</sub>)(CN)]<sup>2-</su

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Rabilou Souley Moussa, Ousmaila Sanda Mamane, Issa Habou, Maman Mousbahou Malam Alma, and Ibrahim Natatou. "Textural, mineralogical and physico-chemical characterization of red clay of Tanout (Zinder-Niger) with a view to its valorization in water treatment." GSC Advanced Research and Reviews 13, no. 3 (2022): 039–53. http://dx.doi.org/10.30574/gscarr.2022.13.3.0339.

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This study aims to determine the textural (specific surface, pore volume and pore size) and mineralogical characteristics of Tanout red clay of Zinder region (Niger) in order to have textural data allowing its use as an adsorbent. The methodology is based on textural analyzes (adsorption of N2 at 77 K by the Brunauer-Emmett-Teller method), mineralogical (X-ray fluorescence, X-ray diffraction, thermo-gravimetric analysis, scanning electron microscopy) and physicochemical (preliminary analyses). The results obtained show that the red clay has a specific surface of 418.4 m2.g-1 and 967.7 m2.g-1 c

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Konale, Ram Ashok, Nilesh Keshavrao Mahale, and Sopan Tukaram Ingle. "Nano-zeolite-graphene oxide composite for calcium hardness removal: isotherm and kinetic study." Water Practice and Technology 15, no. 4 (2020): 1011–31. http://dx.doi.org/10.2166/wpt.2020.079.

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Abstract The present study is an attempt to synthesize and explore the applications of the synthetic nano-zeolites (nZ) and its composites with graphene oxide (GO) for water purification. The modified Hummer's method and hydrothermal methods were applied for the synthesis of the graphene oxide and nano zeolites respectively, followed by the preparation of the composite with the ultrasonic method. Scanning electron microscopy, energy dispersive analysis of X-rays, Fourier transform infrared spectroscopy and X-ray fluorescence were used for physico-chemical characterization of the composite. The

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Pouroutzidou, Georgia K., Liliana Liverani, Anna Theocharidou, et al. "Synthesis and Characterization of Mesoporous Mg- and Sr-Doped Nanoparticles for Moxifloxacin Drug Delivery in Promising Tissue Engineering Applications." International Journal of Molecular Sciences 22, no. 2 (2021): 577. http://dx.doi.org/10.3390/ijms22020577.

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Mesoporous silica-based nanoparticles (MSNs) are considered promising drug carriers because of their ordered pore structure, which permits high drug loading and release capacity. The dissolution of Si and Ca from MSNs can trigger osteogenic differentiation of stem cells towards extracellular matrix calcification, while Mg and Sr constitute key elements of bone biology and metabolism. The aim of this study was the synthesis and characterization of sol–gel-derived MSNs co-doped with Ca, Mg and Sr. Their physico-chemical properties were investigated by X-ray diffraction (XRD), scanning electron m

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Pouroutzidou, Georgia K., Liliana Liverani, Anna Theocharidou, et al. "Synthesis and Characterization of Mesoporous Mg- and Sr-Doped Nanoparticles for Moxifloxacin Drug Delivery in Promising Tissue Engineering Applications." International Journal of Molecular Sciences 22, no. 2 (2021): 577. http://dx.doi.org/10.3390/ijms22020577.

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Mesoporous silica-based nanoparticles (MSNs) are considered promising drug carriers because of their ordered pore structure, which permits high drug loading and release capacity. The dissolution of Si and Ca from MSNs can trigger osteogenic differentiation of stem cells towards extracellular matrix calcification, while Mg and Sr constitute key elements of bone biology and metabolism. The aim of this study was the synthesis and characterization of sol–gel-derived MSNs co-doped with Ca, Mg and Sr. Their physico-chemical properties were investigated by X-ray diffraction (XRD), scanning electron m

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Dorozhkin, P., E. Kuznetsov, A. Schokin, S. Timofeev, and V. Bykov. "AFM + Raman Microscopy + SNOM + Tip-Enhanced Raman: Instrumentation and Applications." Microscopy Today 18, no. 6 (2010): 28–32. http://dx.doi.org/10.1017/s1551929510000982.

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Atomic Force Microscopy (AFM) has developed into a very powerful tool for characterization of surfaces and nanoscale objects. Many physical properties of an object can be studied by AFM with nanometer-scale resolution. Local stiffness, elasticity, conductivity, capacitance, magnetization, surface potential and work function, friction, piezo response—these and many other physical properties can be studied with over 30 AFM modes. What is typically lacking in information provided by AFM studies is the chemical composition of the sample and information about its crystal structure. To obtain this i

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Rabilou, Souley Moussa, Sanda Mamane Ousmaila, Habou Issa, Mousbahou Malam Alma Maman, and Natatou Ibrahim. "Textural, mineralogical and physico-chemical characterization of red clay of Tanout (Zinder-Niger) with a view to its valorization in water treatment." GSC Advanced Research and Reviews 13, no. 3 (2022): 039–53. https://doi.org/10.5281/zenodo.7676395.

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This study aims to determine the textural (specific surface, pore volume and pore size) and mineralogical characteristics of Tanout red clay of Zinder region (Niger) in order to have textural data allowing its use as an adsorbent. The methodology is based on textural analyzes (adsorption of N<sub>2</sub> at 77 K by the Brunauer-Emmett-Teller method), mineralogical (X-ray fluorescence, X-ray diffraction, thermo-gravimetric analysis, scanning electron microscopy) and physicochemical (preliminary analyses). The results obtained show that the red clay has a specific surface of 418.4 m<sup>2</

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Keller, Rob C. A., and Wolf Frits A. de. "Physical-chemical characterization of thermoreversible gelatin helices." Industrial Proteins 4 (January 1, 1997): 14–15. https://doi.org/10.5281/zenodo.3229208.

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The testing of new gelatin batches for photographic purposes is a frequently recurring and tedious task that would benefit from efficient new methods for quality assessment. One of the quality parameters is the efficiency of gelation and the stability and strength of the gel and final photographic matrix. The objective of the present IOP-Industrial Proteins project was to contribute to the rationalization of the working mechanism of gelatin gelation. By studying the unique structural features of gelatin. The structure of the thermoreversible physical crosslinks (“junction zones”) a

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Gouisset, E., G. Rioland, F. Bourcier, D. Faye, P. Walter, and F. Infante. "Detection and characterization of contamination with fluorescence spectroscopy." IOP Conference Series: Materials Science and Engineering 1287, no. 1 (2023): 012025. http://dx.doi.org/10.1088/1757-899x/1287/1/012025.

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Abstract In the field of failure analysis and in particular molecular and particulate contamination, being able to detect any trace of contaminants during the integration of an orbital spacecraft is crucial. In this context, fluorescence allows not only to detect but also to discriminate contaminants. We studied the fluorescence response of two epoxy adhesives, typical sources of spacecraft contamination in orbit with a portable broadband hyperspectral instrument (UV-Vis-NIR) developed in collaboration with the CNES and Intraspec Technologies, but also with a commercial spectrofluorometer. The

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Dal Fovo, Alice, Claudia Gagliardi, Marco Fioravanti, Riccardo Cicchi, and Raffaella Fontana. "Characterization of degradation effects on wood ultrastructure by non-linear imaging." EPJ Web of Conferences 309 (2024): 14003. http://dx.doi.org/10.1051/epjconf/202430914003.

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The characterization of deterioration processes in wooden artifacts is crucial for assessing their state of conservation and ensuring their preservation. Advanced imaging techniques are currently being explored to study the effect of chemical changes on the structural and mechanical properties of wood. Combined second harmonic generation and two-photon excited fluorescence (SHG/TPEF) imaging is a recently introduced non-destructive method for the analysis of cellulose-based samples. The study of age-related wood degradation based on nonlinear signal variation is a promising avenue. This work i

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Mesboua, N., K. Benyounes, S. Kennouche, Y. Ammar, A. Benmounah, and H. Kemer. "Calcinated Bentonite as Supplementary Cementitious Materials in Cement-Based Mortar." Journal of Applied Engineering Sciences 11, no. 1 (2021): 23–32. http://dx.doi.org/10.2478/jaes-2021-0004.

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Abstract The construction industry consumes a large quantity of cement, which therefore leads to a high CO2 emission due to the cement manufacture. The partial replacement of cement by supplementary cementations materials (SCMs) is considered as the most promising alternative to reduce the environmental impact of this industry. This investigation aims to evaluate the performance of calcinated clay (calcined bentonite at 850 °C) used as partial replacement of cement in cement-based mortar. The evaluated performances include the physico-chemical and mechanical properties, as well as microstructu

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Itoua, Prince Igor, Daquan Sun, Ping Li, and Shihui Shen. "Influence of Waste Toner on Asphalt Binder: Chemical and Rheological Characterization." Molecules 28, no. 6 (2023): 2794. http://dx.doi.org/10.3390/molecules28062794.

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The growing amount of waste toner (WT) has posed a significant environmental challenge. Meanwhile, researchers are interested in the feasibility of utilizing waste toner as an asphalt binder modifier because its primary chemical components (Styrene-acrylic copolymer and carbon black) are known to improve asphalt properties. The objective of this study was to evaluate the chemical and rheological properties of the waste-toner-modified asphalt binder and hence determine the suitability of integrating waste toner for asphalt modification. The waste-toner-modified asphalt (TMA) binders were produc

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Laucks, M. L., and E. J. Davis. "Chemical characterization of single pollen particles via fluorescence and Raman spectroscopy." Journal of Aerosol Science 29 (September 1998): S603—S604. http://dx.doi.org/10.1016/s0021-8502(98)00423-6.

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Chotirach, Maslin, Supawan Tantayanon, Duangamol Nuntasri Tungasmita, Junliang Sun, and Sukkaneste Tungasmita. "Synthesis and characterizations of TiN–SBA-15 mesoporous materials for CO2 dry reforming enhancement." Pure and Applied Chemistry 92, no. 4 (2020): 545–56. http://dx.doi.org/10.1515/pac-2019-0806.

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AbstractA novel approach of titanium nitride (TiN) incorporated into SBA-15 framework was developed using one-step hydrothermal synthesis method. TiN contents up to ~18 wt% were directly dispersed in a synthetic gel under a typical strong acidic condition. The physico-chemical characteristics and the surface properties were investigated by means of X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), N2 adsorption-desorption, field emission scanning electron microscope (FESEM) equipped with energy dispersive X-ray spectroscopy (EDS),

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Colegial-Gutiérrez, Juan Diego, María Camila Forero-Quintero, María Alejandra Fuentes-Rueda, and Sully Gomez Isidro. "Characterization of weathering profiles of the crystal rocks of eastern Bucaramanga and definition of hydrogeological properties." Boletín de Ciencias de la Tierra, no. 41 (January 1, 2017): 16–30. http://dx.doi.org/10.15446/rbct.n41.59347.

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In the process of improving the knowledge of the hydrogeological potential of weathered zones in crystalline rocks and compounds that can behave as aquifers, this article is performed whose area of study is located east of the metropolitan area of Bucaramanga, Santander Massif consists of two main lithological units; the Neis of Bucaramanga and Santander Group plutonic (diorite, granodiorite-tonalite gray quartz monzonite and monzogranite). These rocks have undergone brittle deformation, physico-chemical weathering mainly influenced by the tropical atmosphere of the area also are jointed and f

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Paul, Paola, Essia Belhaj, Cécile Diliberto, Komla Lolonyo Apedo, and Françoise Feugeas. "Comprehensive Characterization of Spent Chemical Foundry Sand for Use in Concrete." Sustainability 13, no. 22 (2021): 12881. http://dx.doi.org/10.3390/su132212881.

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The foundry industry generates large amounts of spent foundry sands, which are stored, available for recovery in other industrial sectors but unfortunately poorly exploited. Different authors have studied the possibility of recovering them in concretes, which would also allow production of more sustainable cementitious materials. The variability of their results highlights the importance of a better understanding of the potential influential parameters of the by-products. Unfortunately, exhaustive characterizations of the materials are rarely performed, especially for chemically bound foundry

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