estuary it appeared sporadically a kind of iron oxide rather uncommon in a weathering steel rust layer: akaganeite (β-FeO(OH), Figure 4, Raman bands at 312 and 391 cm-1). This iron oxide appears in seaside environments with high amount of NaCl air-borne . Thus, akaganeite is often observed as a corrosion .
conservation treatment using ethynediamine as a corrosion inhibitor for wrought iron objects found at terrestrial archaeological sites. James and James Scientific Publishers Ltd. .
Results of exploratory in situ analyses with a portable X-Ray Fluorescence (XRF) applied to six rock painting sites, located from Lluta to Camarones coastal valleys in the Atacama Desert, northern Chile, are presented. The results indicate the use of iron oxide as a main component in all paintings, alone or combined with aluminum silicate.
ABSTRACT: Zinc oxide and organic polymer (poly-ethylene oxide) based nanocomposite membranes were prepared and their phase relationship investigated. The composites were characterized by XRD, Raman scattering, DSC, and impedance spectroscopy analysis. It was found that embedding inorganic nanoparticles of ZnO into the polymer matrix of PEO allowed for some crystallinity formation, and .
PhD thesis, Murdoch University. Abdulah, Sait (2018) Militarised masculinity and the rise of a new local political elite in post conflict Aceh. PhD thesis, Murdoch University. Abdulhameed, Mohanad Faris (2018) The epidemiology and impact of cystic echinococcosis in humans and .
In the world of pigments and art history, the term "ochre" generally refers to iron oxide and oxide hydroxide rich powders with variable amounts of manganese oxides (Eastaugh et al. and references therein). Red ochres are dominated by hematite and yellow ochres are typically dominated by goethite, though jarosite group mineral-rich yellow ochres are of local importance.
which were clearly identified as iron gall ink by Raman spectroscopy; • for the black color in the margins in the miniature painting, carbon black was applied, as confirmed by Raman spectroscopy; • in the text ink areas, calcium oxalate was detected by rFTIR, probably indicating fungal degradation; 103 mc o n 11 manuscript cultures
LinkedIn is the world''s largest business network, helping professionals like Emanuela Sara Leite Fragoso discover inside connections to recommended job candidates, industry experts, and business ...
Jun 15, 2016· Senior Research Chemist Gretchen Shearer uses Raman to analyze a sample. So it is a complementary technique to infrared spectroscopy in the in the sense that in the infrared system there may be some materials that are not very sensitive to the .
more I am a Docent of organic chemistry at the University of Helsinki and a Docent of conservation and cultural heritage material research at the University of Jyväskylä doing research with CH ( Cultural Heritage) materials for example, painting materials: pigments, paint media. Research is not focused only in basic case studies, but I am highly interested in
Dr Raju had the great privilege to join in the CSIR-NGRI (National Geophysical Research Institute) as a Scientist under Dr S.M. Naqvi and obtained PhD under his guidance. He carried out Postdoctoral work in Canada, Finland, South Africa and Australia under prestigious scholarships both national ( BOYSCAST & RAMAN ) and international ( Indo ...
Specialization: Nanomaterials research – iron, iron oxide, noble metal and carbon-based (graphene derivatives, carbon dots) nanostructures, magnetic nanoparticles, hybrid systems. Their advanced nano-architecture and applications in water treatment, energy materials, antimicrobial technologies, catalysis, biosensing, medicine (MRI, drug delivery) and biotechnologies.
300K up to the melting point . In this work, we applied the Raman spectroscopy to study of ReF 3 crystals at low temperature. The aim of this study is to investigate possible structural changes associated with phase transitions or anion disordering.
ABSTRACT Novel Engineering Approaches for DNA Sequencing and Analysis Mirkó Palla DNA sequencing is a fundamental tool in biological and medical research. DNA molecules contain t
The effect of fire on the mechanical properties of cement pastes admixed with nano-iron oxide (NF) fired at 275oC can be studied by the determination of the weight loss, apparent porosity, bulk density, and compressive strength of hardened cement pastes treated up to 800ÂºC.
Apr 01, 2010· Micro-Raman spectrometry. In the case of varnishes from three Stradivari instruments, neither in situ EDXRF nor scanning electron microscopy/EDX spectroscopy (SEM/EDX) on micro-samples were able to precisely answer the nature of the two types of red pigments observed. EDX spot analyses of specific grains showed that the first type was Fe-rich, possibly indicating an iron oxide.
In each of these, pigment is prepared and applied as painting, ie, as a mixture containing at least one pigment and a binder. The pigment consist in manganese oxide for black color 20, iron oxide for red 22, copper oxides for green 23, different sorts of clay for white or grey 24.
Raman spectroscopy is established as technique to perform non-destructive and quick analysis, with micrometric resolution, able to give the composition in terms of Mg/(Mg + Fe2+) ratio. To exploit the method, a preliminary characterization is performed by Scanning Electron Microscopy coupled with Energy-dispersed X-ray Spectroscopy (SEM-EDS).
Francesco Grazzi, Consiglio Nazionale delle Ricerche (CNR), Istituto dei sistemi complessi Department, Faculty Member. Studies Neutron Diffraction, Pitt Rivers, and Damascus steel.
View Dr. James Howard, Ph.D.''s profile on LinkedIn, the world''s largest professional community. Dr. James has 6 jobs listed on their profile. See the complete profile on LinkedIn and discover Dr ...
ARCHAEOMETRICAL STUDY OF THE USED MATERIALS IN QAJAR EASEL PAINTING USING XRD, XRF, PLM AND FTIR TECHNIQUES: ... yellow: ochre yellow, iron oxide, brown: combination of iron and carbon dioxide, black: black iron oxide compound. Naserabadi stated that he has used chemical ... red micro-spectroscopy supported by micro-Raman spectroscopy and ...
May 23, 2012· Let''s face it, ketchup bottles suck. When you get down to an almost empty the bottle, plastic ones burp and splat all over your clothes, and glass ones have you awkwardly whacki
Surface Area Analysis, X-Ray Diffraction, X-Ray Photoelectron Spectroscopy, Raman Spectroscopy and Scanning and Transmission Electron Microscopy were used. In the first part of this thesis, catalysts based on metal oxides (MnO x, CuO) and/or a low amount of noble metals (Pt, Pd) supported on alumina washcoat were selected. It was shown that Pt ...
rock art. 1.1. Constraints and methods Pigment (or dye) for painting is produced using an array of mined or quarried organic and inorganic substances (Burgio & Clark 2001; Gomes et al. 2013). The majority of pigments identified within prehistoric rock art are constructed from .
Art Class of 2017 Senior Art Thesis . Maraina Adams, Carol Chao, Merisa Dion, Max Freedman, Julie Lin, Araseli Mendez, Minh Nguyen, Ellison Sherrill, Katherine Wang ... Fabrication of Silver Dendrites for Surface Enhanced Raman Spectroscopy; ... Nanocrystalline Iron Oxide Electrodes for Water Oxidation; Rich Wenner, Examining the Binding ...
Title: Gold subnano-structures on iron oxide surfaces and their interaction with CO. Professor Adam Kiejna is full professor and head of the Materials Physics and Surface Processes Group at the Institute of Experimental Physics, University of Wroclaw, Poland. He obtained his PhD at the University of Wroclaw in 1981 and habilitation in 1991.
A theoretical model based on the momentum conservation principle was developed and applied for describing the dependence of the core and shell diameters to their solvent combinations. Different concentrations of core and shell were also investigated in the coaxial electrospinning of PMMA/PS.
An evaluation of portable X-Ray fluorescence on applied blue faience glazes: A study using replicate glazes of the Late, Ptolemaic and Roman period in Egypt. .
High refractive index (RI) glasses prepared from local quartz sand and compounds of heavy elements, such as, barium carbonate, lead oxide, and bismuth oxide as major ingredients were investigated using Raman spectroscopy. The results showed changes in glass structures of different doping elements, namely, Ba, Pb, and Bi.
Research Article Raman Study on Pompeii Potteries: The Role of Calcium Hydroxide on the Surface Treatment DanieleChiriu, 1 PierCarloRicci, 1 AndreaPolcaro, 2 PaoloBraconi, 2 DavidLanzi, 2 andDavideNadali 3 Dipartimento di Fisica, Universit `adiCagliari,s.p.nKm., Monserrato,Cagliari,Italy
The analyses of micro-samples of paintings by E. Munch and F. Kupka showed that micro-Raman spectroscopy identified pigments which would remain unidentified if analyzed only by SEM-EDS (zinc yellow, Prussian blue). On the other hand, chromium oxide green and ultramarine were not detected together in a sample due to overlap of their main bands.
The present paper provides an overview of the ATR-FTIR spectra of iron-silicate slags and IP made therefrom. The considered slags are not applied in cementitious applications today: copper slag7,8,9, plasmastone10,11, treated bauxite residue12. The overview aims to expose similarities and differences between particular slags, which
The aim of this project was to develop a practical conservation treatment for the removal of residual iron from platinum prints using the chelating agent ethylene diamine tetra acetic acid (EDTA) in conjunction with sodium dithionite (Na 2 S 2 O 4) solution. Sodium dithionite, as well as enhancing the effectiveness of the EDTA, acts as a mild ...