Results 141 to 150 of about 70,002 (285)

Determination Method of Vanadium and Titanium Phases for Chengde Vanadium Titanium Magnetite

Yankuang ceshi, 2013
According to characteristics of the Damiao type vanadic-titanomagnetite deposit in the Chengde area, the mineral compositions of the deposit were studied by using artificial heavy sands separation, single mineral chemical analysis, electron probe and ...
WANG Li-ping, YANG Ming-ling, ZHAO Hai-zhen, ZHANG Li, YANG Yi-min, WU Di, YIN Jian-fei   +6 more
doaj  

Toward Silica‐Free Compliance: A Low‐Viscosity Sample Pretreatment Methodology for Crystalline Quartz Quantification in Viscous Pastes

X-Ray Spectrometry, EarlyView.
ABSTRACT Crystalline quartz, the most common crystalline silica polymorph, is widely found in industrial products. It is of high regulatory relevance, because its fine fraction, a form of respirable crystalline silica, is classified as an occupational carcinogen, with product‐content thresholds (e.g., 0.1% (w/w) in the European Union) and stringent ...
Giacomo Siviero, Michelle Buoso, Diego Andreola, Giulia Moro   +3 more
wiley   +1 more source

Neural Networks and Multivariate Analysis Based on Geochemical Data to Determine Stone Provenance From Ancient Calabrian Quarries (Southern Italy)

Archaeometry, EarlyView.
ABSTRACT This study shows an innovative approach to determine the origin of some Calabrian rocks quarried used in ancient times. Twenty‐five quarries, distributed in all the Calabrian provinces (Southern Italy), were studied and sampled. Ten samples were taken from each quarry, for a total of 250 samples.
Domenico Miriello, Stefano Columbu, Raffaella De Luca, Marco Lezzerini, Mirco Taranto, Fabrizio Antonelli   +5 more
wiley   +1 more source

Controlled composition of Zn-doped iron oxide nanoparticles for optimised MPI performance. [PDF]

Nanoscale Adv
Pragasam DL, Brotherton EE, Poerwoprajitno AR, Ramadhan ZR, Lee B, Bongers A, Wardhani K, Huber DL, Tilley RD.   +8 more
europepmc   +1 more source

Talc‐Tempered Pottery From Bala Hissar, Kabul: An Analytical Study

Archaeometry, EarlyView.
ABSTRACT Potsherds of cooking ware excavated at Bala Hissar archaeological site in Kabul were studied using X‐ray fluorescence (XRF), scanning electron microscope‐energy dispersive X‐ray spectrometry (SEM‐EDS), Raman spectroscopy, X‐ray powder diffraction (XRPD), thermogravimetric analysis (TGA) and optical microscopy.
Parviz Holakooei, Babak Rafiei‐Alavi, Hafizullah Hazim, Hasti Pezeshkanjalili, Lara Maritan   +4 more
wiley   +1 more source

Simultaneous <i>in situ</i> synthesis and loading of magnetite for dye wastewater remediation: adsorption study and DFT calculations. [PDF]

RSC Adv
Farghal HH, Mohamed MS, Abokifa AA, El-Sayed MMH.   +3 more
europepmc   +1 more source

Crossing Ceramic Decoration Boundaries: Compositional and Morphological Analyses of the Mortuary Assemblage From Maridíaz (Nariño, Colombia)

Archaeometry, EarlyView.
ABSTRACT This paper examines the interaction of two ware traditions in the Maridíaz mortuary assemblage (Pasto, Nariño, Colombia), a rare, well‐documented cemetery context in which Piartal, Tuza, and hybrid vessels co‐occur. Using portable X‐ray fluorescence (n = 39) and 3D geometric morphometrics (n = 25), we find shared ceramic compositions ...
Catherine Klesner, Felipe Cárdenas‐Arroyo, Rosie Crawford, Faith‐Lyn Hay, Marcos Martinón‐Torres   +4 more
wiley   +1 more source

Synthesis, Characterization and In Vitro Bioactivity of Magnetite Nanoparticles Obtained by Co-Precipitation. [PDF]

J Funct Biomater
Rascov M, Spoiala A, Motelica L, Trusca RD, Chircov C, Popescu RC, Radacina OR, Surdu VA, Ficai D, Oprea OC, Ficai A, Andronescu E, Turculet CS.   +12 more
europepmc   +1 more source

Phylogenomic analysis of ultraconserved elements clarifies relationships and morphological evolution in Cryptoplacoidea (Mollusca: Polyplacophora)

Cladistics, EarlyView.
Abstract Targeted enrichment of ultraconserved elements (UCEs) is a powerful tool for resolving phylogeny in groups with limited morphological or molecular data. Here, we use UCEs to reconstruct the first comprehensive phylogeny of the chiton superfamily Cryptoplacoidea, including museum material up to 133 years old.
Katarzyna Vončina, Zeyuan Chen, Enrico Schwabe, Anna K. Hundsdoerfer, Julia D. Sigwart   +4 more
wiley   +1 more source

Experimental Investigation of Mechanical Performance and Gamma Radiation Shielding of Hybrid Magnetite-Dolomite High-Density Concrete. [PDF]

Materials (Basel)
Waseem MB, Aleem A, Ali MI, Naeem A, Rafiq W, Alturki R, Khan MI.   +6 more
europepmc   +1 more source