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Journal articles on the topic 'Quartz Titanium Analysis'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Wertich, Vojtěch, Jaromír Leichmann, Marek Dosbaba, and Jens Götze. "Multi-Stage Evolution of Gold-Bearing Hydrothermal Quartz Veins at the Mokrsko Gold Deposit (Czech Republic) Based on Cathodoluminescence, Spectroscopic, and Trace Elements Analyses." Minerals 8, no. 8 (2018): 335. http://dx.doi.org/10.3390/min8080335.

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We performed a detailed analysis of hydrothermal quartz at the Mokrsko gold deposit (Čelina, Mokrsko-East, and Mokrsko-West deposits). Twenty-one samples were studied by scanning electron microscopy cathodoluminescence (CL) imagining, CL emission spectra and trace elements were measured on six selected samples. Four quartz growth generations Q1 to Q4 were described. Homogeneous early blue CL Q1 with initial emission spectra at 380 and 500 nm was observed at the Čelina deposit with typical titanium concentrations in the range of 20–50 ppm. Hydrothermal quartz at Mokrsko-West, which also include

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2

Tashiro, Yuichiro, Satoshi Komasa, Akiko Miyake, Hiroshi Nishizaki, and Joji Okazaki. "Analysis of Titania Nanosheet Adsorption Behavior Using a Quartz Crystal Microbalance Sensor." Advances in Materials Science and Engineering 2018 (2018): 1–10. http://dx.doi.org/10.1155/2018/7461245.

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We investigated the adsorption of albumin and fibronectin on a titania nanosheet- (TNS-) modified quartz crystal microbalance (QCM) sensor. A Ti QCM sensor was fabricated by reactive magnetron sputtering. A thin layer of Ti was deposited on the QCM sensor. This sensor was then alkali-modified by treatment with NaOH at room temperature to fabricate the titania nanosheets. Scanning probe microscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy were performed to investigate the surface topology and chemical components of each sensor. The TNS had a titanium oxide film exhibit

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3

Uttiya, Sureeporn, Ornella Cavalleri, Michele Biasotti, et al. "Mesoporous Titanium Dioxide Thin Films on Quartz via Electrochemical Anodisation Process." Advanced Materials Research 1119 (July 2015): 456–60. http://dx.doi.org/10.4028/www.scientific.net/amr.1119.456.

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Titanium dioxide (TiO2) thin films were prepared by means of electrochemical anodisation or anodic spark deposition (ASD) from thin and flat metallic titanium (Ti) films pre-deposited on high quality quartz substrates by electron beam evaporation. AFM analysis indicates the formation of uniform mesoporous layers and a definite increase about 50% of the film thickness upon anodisation and about 90% upon annealing. Anodised mesoporous TiO2films have been characterized by Raman spectroscopy, which indicates the presence of well-defined peaks related to anatase structure. Phase transformation from

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4

Leeman, William P., Colin M. MacRae, Nick C. Wilson, et al. "A Study of Cathodoluminescence and Trace Element Compositional Zoning in Natural Quartz from Volcanic Rocks: Mapping Titanium Content in Quartz." Microscopy and Microanalysis 18, no. 6 (2012): 1322–41. http://dx.doi.org/10.1017/s1431927612013426.

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AbstractThis article concerns application of cathodoluminescence (CL) spectroscopy to volcanic quartz and its utility in assessing variation in trace quantities of Ti within individual crystals. CL spectroscopy provides useful details of intragrain compositional variability and structure but generally limited quantitative information on element abundances. Microbeam analysis can provide such information but is time-consuming and costly, particularly if large numbers of analyses are required. To maximize advantages of both approaches, natural and synthetic quartz crystals were studied using hig

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5

Buthelezi, M., L. D. Ashwal, and P. Horváth. "Application of titanium-in-quartz geothermometry to magmatic quartz in evolved rocks from the Bushveld Complex, South Africa." South African Journal of Geology 120, no. 2 (2017): 241–50. http://dx.doi.org/10.25131/gssajg.120.2.241.

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Abstract We report concentration data for the trace element titanium (Ti) in magmatic quartz in eight samples of leucogabbronorite, anorthosite, olivine ferrodiorite and quartz anorthosite from the Main and Upper Zones of the Bushveld Complex. The results, obtained by electron microprobe analysis, were used with Ti-in-quartz geothermometers (TitaniQ) to constrain the solidus temperatures of these rocks. Magmatic quartz is present sporadically in the mafic cumulate rocks of the 2950 m Bellevue borehole (Northern Limb), and commonly occurs as intercumulus, triangular patches, typically between c

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6

Wang, Jinxin, Jun Li, Yan Gao, Zhongyuan Lu, and Li Hou. "Mechanical and Drying Shrinkage Performance Study of Ultra-High-Performance Concrete Prepared from Titanium Slag under Different Curing Conditions." Materials 17, no. 17 (2024): 4201. http://dx.doi.org/10.3390/ma17174201.

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This research investigates the effects of various curing regimes, the incorporation of titanium slag, and the utilization of quartz sand on the strength properties and shrinkage behavior of ultra-high-performance concrete (UHPC). By using low-heat silicate cement to prepare UHPC, this study conducted standard curing and steam curing, and comprehensively analyzed the macro and micro performance of UHPC under different curing conditions. The findings indicate that the application of steam curing markedly enhances the mechanical attributes of UHPC while efficiently decreasing its drying shrinkage

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7

Mykola, Plemyannikov. "ANALYSIS OF THE PHOTOCATALYTIC ACTIVITY OF TIO2 COATING ON A GLASS AS A CRITERION OF ITS ABILITY TO SELF-CLEANING." Technology audit and production reserves 6, no. 1 (50) (2019): 14–17. https://doi.org/10.15587/2312-8372.2019.188072.

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<em>The object of research is the process of photocatalytic degradation of methylene blue on glass coated with titanium oxide under the influence of ultraviolet radiation (UV radiation). The study aims to indirectly assess the ability of glasses to self-clean. An axiomatic assumption is made about the correlation between self-cleaning ability and photocatalytic activity.</em> <em>The proprietary photocatalytic reactor is used. This is a cylindrical quartz glass cavity in the form of a glass, on the inner surface of which a photocatalytic coating of titanium oxide is preliminarily applied. The

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8

Iobidze, G. "CHARACTERISTICS OF INTERMEDIATE SULFIDATION IN THE BEKTAKARI–BNELIKHEVI ORE KNOT BASED ON COMPOSITIONAL ANALYSIS." Znanstvena misel journal, no. 102 (May 29, 2025): 9–23. https://doi.org/10.5281/zenodo.15548269.

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The conducted research demonstrates one of the strongest applications of EDS - its ability to produce elemental maps that reveal the spatial distribution of specific elements within a sample. The combination of these methods provides detailed, high-resolution information regarding both surface morphology and elemental composition, which is crucial for the thorough characterization of a given geological object. We also performed studies using BSE and SE methodologies. Spatial Analysis of Samples (EDX – Energy Dispersive X-ray Spect-roscopy), Quantitative Titanium Analysis in Quartz, Quant

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Díaz Pace, Diego, Alfredo Caggianelli, Olga De Pascale, and Giorgio S. Senesi. "Rapid Determination of Ti in Quartz Using a Portable/Handheld Laser-Induced Breakdown Spectroscopy (LIBS) Instrumentation: A Case Study on Quartz Veinlets in Hornfels from Italy." Minerals 14, no. 12 (2024): 1257. https://doi.org/10.3390/min14121257.

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Recent advances in the use of portable/handheld laser-induced breakdown spectroscopy (LIBS) instrumentation have allowed its use directly in the field. In this study, a portable/handheld LIBS demo kit was tested to detect the titanium (Ti) content in some quartz veinlets hosted by hornfels collected from the contact aureole of a Pliocene granite from Italy. Results of the present study demonstrate the promising potential of LIBS in the rapid detection of low and very variable Ti contents in quartz, which can be used as a preliminary test for the estimation of the temperature of quartz crystall

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10

Pyatykh, A., A. Tikhonov, and N. Ulakhanov. "Comparative structural analysis of samples of transpedicular screws from titanium alloys." Journal of Physics: Conference Series 2697, no. 1 (2024): 012062. http://dx.doi.org/10.1088/1742-6596/2697/1/012062.

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Abstract The article presents studies of transpedicular screws made of titanium alloy BT6. A metallographic and microstructural analysis of screw blanks, prototypes of transpedicular screws made of BT6 alloy and commercially produced screws made of Ti-6Al-4V was performed. Specimens of transpedicular screws were manufactured using the vortex thread cutting method on a CITIZEN Cincom K16E-VII automatic lathe. The microgeometry of the screw surface was created by sandblasting using quartz sand as an abrasive material. Studies have shown that experimental and foreign samples of transpedicular scr

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11

Kumar, Jatinder. "Analysis of Surface Topography under Varied Conditions of Energy Input Rate in Ultrasonic Machining of Pure Titanium." Applied Mechanics and Materials 467 (December 2013): 221–26. http://dx.doi.org/10.4028/www.scientific.net/amm.467.221.

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Ultrasonic machining is used for machining hard and brittle materials: semiconductors, glass, quartz, ceramics, silicon, germanium, ferrites etc. Titanium and its alloys are alternative for many engineering applications due to their superior properties such as chemical inertness, high tenacity, high specific strength, excellent corrosion resistance and oxidation resistance. In the present investigation, the effect of energy input rate on the surface topography has been evaluated, under controlled experimental conditions. It has been found that the mode of material removal may change from britt

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12

Makeyev, Alexander B., Sergey G. Skublov, Olga L. Galankina, Evgeny A. Vasiliev, and Anna O. Krasotkina. "Pseudorutile-leucoxene-quartz ores of Timan ‒ a new genetic type of titanium raw materials: prospects for industrial development." Georesursy 25, no. 3 (2023): 163–74. http://dx.doi.org/10.18599/grs.2023.3.10.

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The two largest deposits of Russia – Yaregskoye and Pizhemskoye belong to the same genetic type; hydrothermal-metamorphic indigenous deposits. They are located in the same Timan structure at a distance of no more than 230 km from each other. According to the total approved reserves and forecast resources of titanium dioxide, they are approaching 60% of the all-Russian and will form the basis of industrial titanium raw materials used in Russia in the near future. In the interests of technological mineralogy, morphological features, internal structure, chemical composition of grains of the two m

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13

Jiang, Chen, and Cho. "A Three-Dimensional Finite Element Analysis Model for SH-SAW Torque Sensors." Sensors 19, no. 19 (2019): 4290. http://dx.doi.org/10.3390/s19194290.

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In this paper, a three-dimensional finite element analysis (3D-FEA) model for shear horizontal surface acoustic wave (SH-SAW) torque sensors is presented. Torque sensors play a significant role in various fields to ensure a reliable torque transmission in drivelines. Featured with the advantages of high propagation velocity, large Q-value, and good power capacity, SH-SAW based torque sensors are promising but very few studies have been carried out. In order to develop a successful sensor, understanding the characteristics of SH-SAWs produced on piezoelectric substrates and torque sensing modes

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14

Nyamukamba, P., L. Tichagwa, S. Mamphweli, and L. Petrik. "Silver/Carbon Codoped Titanium Dioxide Photocatalyst for Improved Dye Degradation under Visible Light." International Journal of Photoenergy 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/3079276.

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Herein, we report the synthesis of quartz supported TiO2 photocatalysts codoped with carbon and silver through the hydrolysis of titanium tetrachloride followed by calcination at 500°C. The prepared samples were characterized by UV-Vis diffuse reflectance spectroscopy, high resolution scanning electron microscopy (HRSEM), Raman spectroscopy, thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD). Codoping of TiO2 with Ag and carbon resulted in an increase in the surface area of the photocatalyst and altered the ratio of the anatase to rutile phase

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15

Nikolaev, A. A. "Separation of titanium and silicon oxides during plasma-arc melting of quartz-leucoxene concentrate." Physics and Chemistry of Materials Treatment 5 (2021): 30–36. http://dx.doi.org/10.30791/0015-3214-2021-5-30-36.

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The aim of the work was investigation of separation of titanium’s and silicon’s oxides during plasma-arc melting of quartz-leucoxene concentrate from Yarega deposit. The melting was proceeded in laboratory plasma-arc furnace in graphite crucible at 16 – 40 kW of arc power. The microstructure and R-x phase analysis of solidified melt were investigated after arc melting. The melt separated on two layers. The upper layer consisted mainly of SiO2 in the form of glass, the lower layer — mainly of cemented titanium oxide particles ≈ 100 μm in dimension. TiO2, Ti8O15, Ti6O11, Fe3TiO3O10, Ti3O5 were o

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16

Ryemshak, Solomon A., Aliyu Jauro, Istifanus Y. Chindo, and Eno O. Ekanem. "Mineral Matter in Nigerian Coals and Tar Sand and Their Implications in Binary Blend Formulation and Co-Carbonisation." Hungarian Journal of Industry and Chemistry 43, no. 2 (2015): 91–95. http://dx.doi.org/10.1515/hjic-2015-0015.

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Abstract In blend simulation for metallurgical applications, the knowledge of the type and amount of mineral matter in coal and other additives, as well as their derivatives as a result of combustion is important in assessing the coke quality and blast furnace efficiency. X-ray diffraction (XRD) and X-ray fluorescence (XRF) techniques were used in assessing the mineral matter contents and oxides produced up on combustion of the following Nigerian coals: Afuze (AFZ), Garin-Maiganga (GMG), Lamza (LMZ), Shankodi-Jangwa (SKJ), and Chikila (CHK) in addition to a tar sand from Ondo (OTS). Coal sampl

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17

Yoshida, Eiji, and Tohru Hayakawa. "Adsorption Analysis of Lactoferrin to Titanium, Stainless Steel, Zirconia, and Polymethyl Methacrylate Using the Quartz Crystal Microbalance Method." BioMed Research International 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/3961286.

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It is postulated that biofilm formation in the oral cavity causes some oral diseases. Lactoferrin is an antibacterial protein in saliva and an important defense factor against biofilm development. We analyzed the adsorbed amount of lactoferrin and the dissociation constant (Kd) of lactoferrin to the surface of different dental materials using an equilibrium analysis technique in a 27 MHz quartz crystal microbalance (QCM) measurement. Four different materials, titanium (Ti), stainless steel (SUS), zirconia (ZrO2) and polymethyl methacrylate (PMMA), were evaluated. These materials were coated on

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18

Otgon-Uul, Enkh-Uyanga, Munkhtsetseg Baatar, Ulziijargal Nanzad, and Jargalsaikhan Lkhamsuren. "Preparation of Titanium Dioxide (TiO<sub>2</sub>) from Waste of Polymetallic Ore Processing <i>via</i> Sulfurization Treatment." Indonesian Journal of Chemistry 24, no. 5 (2024): 1563. http://dx.doi.org/10.22146/ijc.89992.

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Various experimental conditions were applied to extract titanium oxide from the waste of polymetallic ore. X-ray diffraction (XRD) analysis confirms that the waste of polymetallic ore contains including various minerals such as almandine (Fe,Mg,Ca)3Al2Si3O12, brownmillerite (FeAlO3(CaO)2), quartz (SiO2), magnetite (Fe3O4). Using H2SO4 acid with a concentration of 93% in the S/L mass ratio of 1:1.5 at 140 °C is suggested as an optimum reaction condition. Its hydrolysis subsequently leads to the formation of the titanyl sulfate (TiOSO4), and relatively pure titanium oxide is obtained through pre

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19

Silalahi, Imelda Hotmarisi, Nikmatun Khasanah, and Titin Anita Zaharah. "KOMPOSISI UNSUR DAN MINERAL DALAM PASIR BESI, RESIDU BAUKSIT DI PT. INDONESIA CHEMICAL ALUMINA (ICA) (ELEMENTAL COMPOSITION AND MINERALS IN IRON SAND, BAUXITE RESIDUE AT PT. INDONESIA CHEMICAL ALUMINA (ICA)." Indonesian Journal of Pure and Applied Chemistry 4, no. 3 (2021): 132. http://dx.doi.org/10.26418/indonesian.v4i3.48986.

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Iron sand is obtained from one of the waste treatments stages of bauxite residue called red mud, operated at PT. Indonesia Chemical Alumina (PT. ICA). Preliminary analysis of the sand indicates that the main element contained in the sand is iron with a percentage of up to 60% and titanium at 10%. This study aims to determine the elemental composition and mineral characteristics of sand that was separated magnetically from the iron sand. Magnetic separation was carried out in two stages, namely separation using a weak magnets and strong magnets. The separation resulted in approximately 71% of s

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Silalahi, Imelda Hotmarisi, Nikmatun Khasanah, and Titin Anita Zaharah. "KOMPOSISI UNSUR DAN MINERAL DALAM PASIR BESI, RESIDU BAUKSIT DI PT. INDONESIA CHEMICAL ALUMINA (ICA) (ELEMENTAL COMPOSITION AND MINERALS IN IRON SAND, BAUXITE RESIDUE AT PT. INDONESIA CHEMICAL ALUMINA (ICA)." Indonesian Journal of Pure and Applied Chemistry 4, no. 3 (2021): 132. http://dx.doi.org/10.26418/ijopac.v4i3.48986.

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Iron sand is obtained from one of the waste treatments stages of bauxite residue called red mud, operated at PT. Indonesia Chemical Alumina (PT. ICA). Preliminary analysis of the sand indicates that the main element contained in the sand is iron with a percentage of up to 60% and titanium at 10%. This study aims to determine the elemental composition and mineral characteristics of sand that was separated magnetically from the iron sand. Magnetic separation was carried out in two stages, namely separation using a weak magnets and strong magnets. The separation resulted in approximately 71% of s

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21

Rothpan, Matthew, Nitin Chandra Teja Dadi, Geoffrey McKay, et al. "Titanium-Dioxide-Nanoparticle-Embedded Polyelectrolyte Multilayer as an Osteoconductive and Antimicrobial Surface Coating." Materials 16, no. 21 (2023): 7026. http://dx.doi.org/10.3390/ma16217026.

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Bioactive surface coatings have retained the attention of researchers and physicians due to their versatility and range of applications in orthopedics, particularly in infection prevention. Antibacterial metal nanoparticles (mNPs) are a promising therapeutic, with vast application opportunities on orthopedic implants. The current research aimed to construct a polyelectrolyte multilayer on a highly porous titanium implant using alternating thin film coatings of chitosan and alginate via the layer-by-layer (LbL) self-assembly technique, along with the incorporation of silver nanoparticles (AgNPs

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22

Serikov, T. M. "The effect of electric transport properties of titanium dioxide nanostructures on their photocatalytic activity." Bulletin of the Karaganda University. "Physics" Series 99, no. 3 (2020): 13–21. http://dx.doi.org/10.31489/2020ph3/13-21.

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. Films formed by nanoparticles, nanorods and nanotubes of titanium dioxide with a thickness of 3.9, 4.0 and 4.1 μm, respectively, with an area of 2 cm2 were obtained by various methods. Nanostructures were characterized by X-ray phase analysis, scanning electron microscopy (SEM), BET (Brunauer–Emmett–Teller), BJH (Barrett–Joyner–Halenda). The electric transport properties of the films were studied by impedance pectroscopy. The photocatalytic activity of the samples was evaluated by the photocurrent and degradation of the methylene blue dye under xenon lamp illumination. The concentration of h

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23

Thalmaier, György, Ioan Vida-Simiti, N. Jumate, et al. "Thermal Stability of Ni40Ti40Nb20 and Ni32Ti48Nb20 Tapes Obtained by Rapid Solidification Technique." Solid State Phenomena 188 (May 2012): 41–45. http://dx.doi.org/10.4028/www.scientific.net/ssp.188.41.

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Nickel–titanium- group 5A metal (V, Nb, Ta, Zr) alloys are known as promising hydrogen-selective membrane materials. They can potentially be used in membrane reactors, which can produce high-purity H2 and CO2 streams from coal-derived syngas at elevated temperatures. The master alloys were prepared by arc melting using high purity metals in a Ti-gettered argon atmosphere. The alloys were melted several times in order to improve homogeneity. The ingots were induction-melted under a high-purity argon atmosphere in a quartz tube and graphite crucible injected through a nozzle onto a Cu wheel to p

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24

Joseph, ATTOUGBRE Koffi, DIARRA Moussa, N’GUETTIA Kossonou Roland, TRAORE Karim Sory, and DIBI Brou. "Physico-chemical and Morphological Characterization of Clay Extracted from the Subsoil of the City of Daloa, West of Ivory Coast." Asian Journal of Chemical Sciences 15, no. 3 (2025): 1–9. https://doi.org/10.9734/ajocs/2025/v15i3368.

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This work is part of the valorization of clay, one of the natural and abundant resources in the regions of Ivory Coast, particularly in Daloa. The objective of this work was to characterize a clay from the city of Daloa for its future use in the field of liquid effluent treatment. Analysis were carried out using X – ray diffraction and scanning electron microscopy (SEM) coupled with energy dispersive X – ray spectroscopy (EDX). The results reveal that this clay is compose of dickite – 2M1 and halloysite – 7 Å, with significant quantities of quartz, and traces of titanium dioxide, iron oxide an

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Dmitriev, A. N., G. Yu Vit’kina, R. V. Petukhov, S. A. Petrova, and Yu A. Chesnokov. "Estimation of indices of BF heat of titanium-magnetite concentrates with different titanium dioxide content." Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information 75, no. 2 (2019): 154–65. http://dx.doi.org/10.32339/0135-5910-2019-2-154-165.

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Russia owns world largest reserves of titanium- magnetite and ilmenite- titanium- magnetite ores. Following the stepby-step inclusion into metallurgical processing of titanium- magnetite raw materials, the matter of maximum extraction of iron, vanadium and titanium becomes more and more actual. Kachkanar group of deposits of titanium- magnetite ores consists of two deposits: Gusevgoskoe and Sobstvenno-Kachkanar. At present JSC EVRAZ NTMK uses titanium- magnetite sinter and pellets, produced of Gusevgorskoe deposit ores. To make up the dropped out capacities and to keep the volume of mined ore

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Yoshida, Eiji, and Tohru Hayakawa. "Quantitative Analysis of Apatite Formation on Titanium and Zirconia in a Simulated Body Fluid Solution Using the Quartz Crystal Microbalance Method." Advances in Materials Science and Engineering 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/7928379.

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The bone-bonding ability of a material is evaluated by examining apatite formation on its surface in simulated body fluid (SBF). Partially stabilized zirconia (ZrO2) is currently attractive as an alternative to titanium (Ti) implants; however, no quantitative analysis of apatite formation between Ti and ZrO2 in SBF has been reported. In the present study, we quantitatively evaluated apatite formation onto Ti or ZrO2 in SBF using the 27 MHz quartz crystal microbalance method (QCM). In the QCM measurements, apatite formation was detected as a frequency decrease in the Ti or ZrO2 sensor. Frequenc

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Mykhailov, V., S. Vyzhva, and S. Paiuk. "SYSTEM ANALYSIS OF THE MINERAL RAW MATERIAL BASE OF STRATEGIC MINERALS OF UKRAINE." Visnyk of Taras Shevchenko National University of Kyiv. Geology, no. 4 (99) (2022): 36–44. http://dx.doi.org/10.17721/1728-2713.99.05.

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A systematic analysis of the mineral resource base (MRB) of strategically important minerals for the Ukrainian economy is carried out. Four categories of strategic minerals from the point of view of their investment attractiveness are identified: traditional (iron, manganese, titanium, uranium, kaolin, sand molding, building stones, quartz raw materials, refractory clay); highly promising (rare earths, zirconium and hafnium, lithium, scandium, germanium, graphite, potassium salts, abrasive raw materials, piezooptical raw materials); promising (nickel, cobalt, chromium, aluminum, copper, tantal

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Jafar, N., S. R. Nurhawaisyah, S. Widodo, C. A. Chalik, and M. H. Wakila. "Mineralogical Study of Bauxite of Kenco Area, Landak District, West Kalimantan Province, Indonesia." IOP Conference Series: Earth and Environmental Science 1134, no. 1 (2023): 012025. http://dx.doi.org/10.1088/1755-1315/1134/1/012025.

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Abstract Indonesia is a country with a tropical climate that allows for high levels of weathering. Bauxite is the result of weathering rocks that have high aluminum content, low iron content, and little quartz content. The formation of bauxite deposits is controlled by source rock which is rich in Al element, tropical climatic conditions, and geomorphological conditions that allow the formation of the accumulation of weathered source rock products. The altered silicate minerals due to weathering result in the silica element being released from the crystal bonds and some iron are released so th

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Okuo, James M., and Timothy I. Agho. "A Preliminary Survey of the Lithochemistry of Tantalite Mineral from Granitic Pegmatite Deposits in the Okpella Area, Northern Edo State, Nigeria." Journal of Materials & Environmental Sustainability Research 4, no. 2 (2024): 39–46. http://dx.doi.org/10.55455/jmesr.2024.007.

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This study investigates the lithochemistry of tantalite mineral from granitic pegmatite deposits in the Okpella area, Northern Edo State, Nigeria. Tantalite, a valuable mineral containing tantalum and niobium, was identified within these pegmatites. It has been assessed through a comprehensive evaluation of the mineral, including determination of its composition, physical characteristics and anionic behaviour employing standard analytical techniques. The X-ray fluorescence (XRF) analysis revealed a significant presence of tantalum oxide, Ta2O5 (41.72%) and other useful oxides of niobium, Nb2O5

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Okuo, James M., and Timothy I. Agho. "A Preliminary Survey of the Lithochemistry of Tantalite Mineral from Granitic Pegmatite Deposits in the Okpella Area, Northern Edo State, Nigeria." Journal of Materials & Environmental Sustainability Research 4, no. 2 (2024): 39–46. http://dx.doi.org/10.55455/jmesr.2021.007.

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This study investigates the lithochemistry of tantalite mineral from granitic pegmatite deposits in the Okpella area, Northern Edo State, Nigeria. Tantalite, a valuable mineral containing tantalum and niobium, was identified within these pegmatites. It has been assessed through a comprehensive evaluation of the mineral, including determination of its composition, physical characteristics and anionic behaviour employing standard analytical techniques. The X-ray fluorescence (XRF) analysis revealed a significant presence of tantalum oxide, Ta2O5 (41.72%) and other useful oxides of niobium, Nb2O5

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Hirota, Masatsugu, and Tohru Hayakawa. "QCM Analysis for Two-Step Adsorption of Albumin and Fibronectin on Zirconia Surface." Advances in Materials Science and Engineering 2021 (August 18, 2021): 1–8. http://dx.doi.org/10.1155/2021/2492387.

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The adsorption of proteins on the dental implant surface is the first step in the key role of osseointegration. Many types of proteins exist in the living body and compete for adsorption on the material surface. As an implant material, partially stabilized zirconia (ZrO2) is currently an attractive alternative to titanium to overcome the shortcomings of titanium implants. In this study, we investigated the two-step adsorption of fibronectin (Fn) and bovine serum albumin (Alb) on the ZrO2 surface using a 27-MHz quartz crystal microbalance (QCM) method. A ZrO2 sensor was employed for the QCM mea

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Stradioto, Marcia Regina, and Hung Kiang Chang. "Diagênese de Arenitos do Grupo Bauru no Estado de São Paulo." Ciência e Natura 42 (December 30, 2020): e88. http://dx.doi.org/10.5902/2179460x42694.

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In the state of São Paulo, the Bauru Group units cover about 47% of the territory, constituting an aquifer of great interest, in particular for public watersupply. In this study, core samples were taken for petrographic and diagenetic characterization of different units, seeking to improve the knowledge of the Bauru Aquifer System. The samples were submitted to analysis by optical microscopy and scanning electron microscopy. The units of this aquifer system are mostly subarkoses (67% of the samples), except the Marilia Formation, which is composed of sublitharenite and quartzarenite. These san

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Behnajady, Mohammad A., Sadegh Amirmohammadi-Sorkhabi, Nasser Modirshahla, and Mohammad Shokri. "Investigation of the efficiency of a tubular continuous-flow photoreactor with supported titanium dioxide nanoparticles in the removal of 4-nitrophenol: operational parameters, kinetics analysis and mineralization studies." Water Science and Technology 64, no. 1 (2011): 56–62. http://dx.doi.org/10.2166/wst.2011.666.

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In this study, to investigate the application of heterogeneous photocatalysis in the removal of organic contaminants from aqueous media a novel tubular continuous-flow photoreactor with supported TiO2-P25 on glass plates was designed and constructed. The photoreactor comprises six quartz tubes and a UV lamp which was placed in the center of the quartz tubes. 4-nitrophenol (4-NP) as a most refractory pollutant was chosen as a probe pollutant to examine the photoreactor efficiency for environmental cleaning applications. Results of experiments show that the removal efficiency of 4-NP in this pho

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Mubashir, Muhammad, Raza Mutahir, and Muhammad Shoaib Ur Rehman. "Design and Analysis of Hollow Catenoidal Horn Profile for Ultrasonic Machining of Composite Materials." Journal of Studies in Science and Engineering 2, no. 2 (2022): 18–32. http://dx.doi.org/10.53898/josse2022222.

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The composite materials Si/AlC, crystal quartz, and ceramic glass are becoming an important part of the present society in many engineering and non-engineering fields. Conventional methods available for machining these materials have many flaws due to which their application on large scale is restricted. A non-conventional process known as ultrasonic machining (USM), can be implemented for machining of these materials effectively. Anyhow machining efficiency of USM greatly depends upon its horn design and therefore in the present study a horn based on a catenoidal profile with aluminum and tit

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Ezeani, Uchechukwu Stephanie, Onyinye Lisa Eze, Gordian Chuks Obi, and Ositadimma Igwebuike Chiaghanam. "Silica Sand Potential of the Ebenebe Sandstone, Anambra State, Nigeria." International Journal of Research and Scientific Innovation XII, no. VI (2025): 345–57. https://doi.org/10.51244/ijrsi.2025.12060029.

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The Ebenebe Sandstone is a component of the Paleocene Imo Formation in south-eastern Nigeria. The deposit in Anambra State was subjected to textural and chemical analyses to establish the silica sand potential, and suitability for various industrial applications. The research is a contribution to government’s effort toward solid mineral exploration and exploitation to support industrialization of the State. The research strategy involved (i) detailed sampling of outcrops of the Ebenebe Sandstone deposit in Anambra State, (ii) grain size analysis to evaluate the textural parameters critical for

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Hayden, Leslie, James M. Lightner, Stacy Strausborger, Teri J. Franks, Nora L. Watson, and Michael R. Lewin-Smith. "Particle analysis of surgical lung biopsies from deployed and non-deployed US service members during the Global War on Terrorism." PLOS ONE 19, no. 4 (2024): e0301868. http://dx.doi.org/10.1371/journal.pone.0301868.

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The role that inhaled particulate matter plays in the development of post-deployment lung disease among US service members deployed to Southwest Asia during the Global War on Terrorism has been difficult to define. There is a persistent gap in data addressing the relationship between relatively short-term (months to a few years) exposures to high levels of particulate matter during deployment and the subsequent development of adverse pulmonary outcomes. Surgical lung biopsies from deployed service members and veterans (DSMs) and non-deployed service members and veterans (NDSMs) who develop lun

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Amar, Abdelouahed, Ilyasse Loulidi, Abderrahim Kali, Fatima Boukhlifi, Chaimaa Hadey, and Maria Jabri. "Physicochemical Characterization of Regional Clay: Application to Phenol Adsorption." Applied and Environmental Soil Science 2021 (May 3, 2021): 1–9. http://dx.doi.org/10.1155/2021/8826063.

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Phenol is one of the most toxic pollutants found in industrial waste. This work focuses on the removal of phenol using clay from the Sale region. Adsorbent was characterized by X-ray fluorescence spectroscopy, X-ray diffraction, infrared spectroscopy, and scanning electron microscopy. The chemical analysis of this clay shows that the percentage of silicon and aluminium is quite high, and the percentage of calcium and iron is relatively high, so this material is rich in muscovite, quartz, and calcite. In addition to the presence of titanium dioxide (TiO2), which can give it a property of degrad

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Wang, Gang, Runbo Zhang, Xiangyu Xu, Ren Yuan, Xuteng Lv, and Chenglei Fan. "Effects of Defocus Distance and Weld Spacing on Microstructure and Properties of Femtosecond Laser Welded Quartz Glass-TC4 Alloy Joints with Residual Stress Analysis." Materials 18, no. 14 (2025): 3390. https://doi.org/10.3390/ma18143390.

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This study develops an optimized femtosecond laser welding process for joining quartz glass and TC4 titanium alloy (Ti-6Al-4V) under non-optical contact conditions, specifically addressing the manufacturing needs of specialized photoelectric effect research containers. The joint primarily consists of parallel laser-welded zones (WZ) interspersed with base material. The defocus distance of the femtosecond laser predominantly influences the depth and phase composition of the WZ, while the weld spacing influences the crack distribution in the joint region. The maximum shear strength of 14.4 MPa w

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Helali, Saloua. "TiO2/SWCNts: Linear and Nonlinear Optical Studies for Environmental Applications." C 11, no. 1 (2025): 11. https://doi.org/10.3390/c11010011.

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A series of single-walled carbon nanotube/titanium dioxide (SWCNTs/TiO2) composites were prepared by the incorporation of various concentrations (0, 5, 10, 20 V.%) of SWCNTs in TiO2. The prepared solutions were successfully formed on silicon and quartz substrates using the sol–gel spin-coating approach at 600 °C in ambient air. The X-ray diffraction method was used to investigate the structure of the samples. The absorbance and transmittance data of the samples were measured using a UV–vis spectrophotometer. Through the analysis of these data, both the linear and nonlinear optical properties o

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Allen, Kathryn, Stephen Roberts, and John W. Murray. "Marginal marine agglutinated foraminifera: affinities for mineral phases." Journal of Micropalaeontology 18, no. 2 (1999): 183–91. http://dx.doi.org/10.1144/jm.18.2.183.

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Abstract. The major agglutinated constituents in test material of marginal marine foraminifera are identified as α-quartz and clay particles using complementary spectroscopic techniques. Electron dispersive scattering analysis, micro-laser Raman and Fourier transform infrared (FTIR) spectroscopic techniques revealed detail about elemental and mineral polymorph constituents in test walls. Additionally, FTIR identifies the existence of organic cements and lining materials in wall structures. Micro-laser Raman specifically characterized the titanium oxide mineral, anatase, as a distinctive fracti

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Arutyunyan, A. A., N. D. Malyutin, G. A. Malyutin, S. N. Podzyvalov, and N. N. Yudin. "Frequency characteristics of strip modules of the quasi-chaotic signals formation based on bulk nonlinear optical crystals." Ural Radio Engineering Journal 7, no. 3 (2023): 227–49. http://dx.doi.org/10.15826/urej.2023.7.3.001.

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In this paper the experimental study of frequency dependences of scattering matrix coefficients of strip modules based on a coplanar strip line with partial dielectric filling in the form of bulk non-linear optical crystals of quartz, potassium titanium phosphate (KTP), zinc germanium diphosphide, lithium niobate has been performed. The appearance of the effect of forming quasi- chaotic oscillations in modules containing KTiOPO4, ZnGeP2, LiNbO3 bulk crystals when LFM signals are fed at fast switching of incident wave direction in the receiving and transmitting tract of the vector network analy

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Shelke, Pandit, Meghmala Waghmode, Ravindra Mene, et al. "Morphological and elemental analysis of termite mound and ant nest in agriculturally prominent area." Nepal Journal of Environmental Science 11, no. 1 (2023): 1–10. http://dx.doi.org/10.3126/njes.v11i1.49170.

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Soil management is important for the farmers to improve the crop yield. In nature some invertebrates serve as bioindicators and biomonitors. Biogenic structure built by insects is important for controlling soil erosion and water reserves. Ants and termites nest architecture along with the elemental analysis was studied to evaluate soil health and possible threats imposed by heavy metals in the area. The soil samples were collected and analyzed for various parameters. Systematic study of porosity, composition, and nutritional values of soil in ant nest and termite mound were done. The Atomic Ab

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Brownfield, Michael E. "Characterization of feed coals and coal combustion byproducts from the Wyodak-Anderson coal zone, Powder River Basin, Wyoming." Mountain Geologist 57, no. 3 (2020): 199–240. http://dx.doi.org/10.31582/rmag.mg.57.3.199.

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The U.S. Geological Survey (USGS) determined the physical and chemical properties of more than 260 feed coal and coal combustion byproducts from two coal-fired power plants. These plants utilized a low-sulfur (0.23-0.47 wt. % S) and low ash (4.9-6.3 wt. % ash) subbituminous coal from the Wyodak-Anderson coal zone in the Tongue River Member of the Paleocene Fort Union Formation, Powder River Basin, Wyoming. Fifty-three samples of bituminous coal were collected and analyzed from a Kentucky power plant, which used several sources of bituminous coals from the Appalachian and Illinois Basins. Based

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Lewicka, Ewa, and Anita Trenczek-Zajac. "Investigations of Feldspar-Quartz Raw Materials After Firing: Effect of Various Na2O/K2O Ratio and Synthetic Pigments Addition." Minerals 10, no. 7 (2020): 646. http://dx.doi.org/10.3390/min10070646.

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Different techniques (chemical analysis, X-ray diffraction, Mössbauer spectroscopy, UV-Vis-NIR spectrophotometry and chromaticity measurements) were used to study the color variation of feldspathic raw materials after firing at 1200 °C. Two varieties of feldspar-quartz grits (with Na2O or K2O prevalence) doped with synthetic pigments (hematite and rutile) were heat-treated in an oxidizing atmosphere. The results obtained indicate that the color of the ceramic body after firing may not only depend on the presence and analytical content of coloring elements (such as iron and titanium), but on th

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El Abdouni, Aouatif, Kadri Taoufiq, Khadija Haboubi, et al. "Evaluation of slay composition in the sediments of the Mohamed Ben Abdelkrim El Khattabi Dam, Beni Bouayach, Northern Morocco." E3S Web of Conferences 527 (2024): 01007. http://dx.doi.org/10.1051/e3sconf/202452701007.

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This research analyses and identifies clays from the Mohamed Ben Abdelkrim El Khattabi dam in Beni Bouayach, northern Morocco, to assess their suitability for various applications. The study employed X-ray diffraction (XRD), X-ray fluorescence, infrared spectroscopy, and physicochemical methods. Elemental analysis revealed high silicon and calcium levels alongside iron, aluminum, potassium, titanium, sulfur, manganese, and trace amounts of zinc, nickel, and chromium. These components suggest a clay composed mainly of montmorillonite, calcite, and quartz. The physicochemical characteristics inc

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Eliaz, Noam, William Kopelovitch, Larisa Burstein, Equo Kobayashi, and Takao Hanawa. "Electrochemical processes of nucleation and growth of calcium phosphate on titanium supported by real-time quartz crystal microbalance measurements and X-ray photoelectron spectroscopy analysis." Journal of Biomedical Materials Research Part A 89A, no. 1 (2009): 270–80. http://dx.doi.org/10.1002/jbm.a.32129.

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Mohamed, Hamdy Mohamed. "A Comparison Study of Titanium Dioxide and Zinc Oxide Nanoparticles for Cleaning Archaeological Pottery." Journal of Nano Research 76 (November 21, 2022): 61–77. http://dx.doi.org/10.4028/p-2zntbv.

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Many excavations contain potsherds that have suffered from different aspects of deterioration, including salt crystallization, dirt deposition, and soot. The different stains play an important role in the deterioration of archaeological pottery, such as the disappearance of the original surface and discoloration. The present study aims to evaluate some nanoparticles in an innovative poultice form to be used to clean archaeological pottery. In this study, the nanoparticles (NPs) of titanium dioxide (TiO2) and zinc oxide (ZnO) have been prepared at 5% and in the poultice form to be used for the

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Vilakazi, Amanda Qinisile, Alan Shemi, and Sehliselo Ndlovu. "Dry Magnetic Separation and the Leaching Behaviour of Aluminium, Iron, Titanium, and Selected Rare Earth Elements (REEs) from Coal Fly Ash." Minerals 15, no. 2 (2025): 119. https://doi.org/10.3390/min15020119.

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Coal fly ash (CFA) is a commercially viable source of alumina comparable to traditional bauxite deposits. Due to its high silica content and alumina in the refractory mullite phase, the most suitable processing technique is the sinter-H2SO4 leach process. However, this process is energy-intensive, has low selectivity for Al, and generates a secondary solid waste residue. To develop a sustainable process that is economically attractive, Al can be extracted with REEs, Ti, and Fe as saleable products, while secondary solid waste is regenerated for further applications to achieve high-value and hi

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Duderija, Belma, Alejandro González-Orive, Christoph Ebbert, Vanessa Neßlinger, Adrian Keller, and Guido Grundmeier. "Electrode Potential-Dependent Studies of Protein Adsorption on Ti6Al4V Alloy." Molecules 28, no. 13 (2023): 5109. http://dx.doi.org/10.3390/molecules28135109.

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This article presents the potential-dependent adsorption of two proteins, bovine serum albumin (BSA) and lysozyme (LYZ), on Ti6Al4V alloy at pH 7.4 and 37 °C. The adsorption process was studied on an electropolished alloy under cathodic and anodic overpotentials, compared to the open circuit potential (OCP). To analyze the adsorption process, various complementary interface analytical techniques were employed, including PM-IRRAS (polarization-modulation infrared reflection-absorption spectroscopy), AFM (atomic force microscopy), XPS (X-ray photoelectron spectroscopy), and E-QCM (electrochemica

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White, R. Thomas. "Closed Vessel Sample Decomposition by Microprocessor Controlled High Temperature/ Pressure Asher for Elemental Analysis by Inductively Coupled Argon Plasma Emission Spectrometer." Journal of AOAC INTERNATIONAL 72, no. 2 (1989): 387–93. http://dx.doi.org/10.1093/jaoac/72.2.387.

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Abstract A safe, reliable, and efficient method is described for automated acid decomposition of biological samples, agricultural food products, and environmental material under high temperature and pressure. A high temperature/pressure asher that provides temperatures up to 320°C and pressures up to 100 bars (1450 psi) is used to heat 5 mL of ultrapure acid 4 h for complete sample decomposition. The unit is microprocessor-controlled with up to 5 programmable temperature levels and ramp time intervals. These levels and intervals are displayed on a CRT screen. Both temperature and pressure prog

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