Search results for "Microanalysis"
showing 9 items of 59 documents
Sublimable Single Ion Magnets Based on Lanthanoid Quinolinate Complexes: The Role of Intermolecular Interactions on Their Thermal Stability
2018
We report the design, preparation, and characterization of two families of thermally robust coordination complexes based on lanthanoid quinolinate compounds: [Ln(5,7-Br2q)4]− and [Ln(5,7-ClIq)4]−, where q = 8-hydroquinolinate anion and Ln = DyIII, TbIII, ErIII, and HoIII. The sodium salt of [Dy(5,7-Br2q)4]− decomposes upon sublimation, whereas the sodium salt of [Dy(5,7- ClIq)4]−, which displays subtly different crystalline interactions, is sublimable under gentle conditions. The resulting film presents low roughness with high coverage, and the molecular integrity of the coordination complex is verified through AFM, MALDI-TOF, FT-IR, and microanalysis. Crucially, the single-molecule magnet …
<title>Holographic recording in polymer composites of organic photochromes and chalcogenides</title>
2008
Recently a number of organic and inorganic materials have been studied for direct surface-relief formation during the exposure process by a light or e-beam. It is very promising for practical application enabling the possibility to simplify the surface-relief formation technology. In this report the method of preparation of thin polymer-chalcogenide and polymer-azobenzene composite films is described, and some features of photoinduced changes of optical properties and holographic recording of these materials are studied. Films of composites were obtained from solution of arsenic sulphide, Disperse red 1 and polymers in organic solvents. The solution was spread on glass substrate and dried. …
Nano‐Powdered Calcium Carbonate Reference Materials: Significant Progress for Microanalysis?
2019
Sequential identification of organic dyes using the voltammetry of microparticles approach
2009
An electrochemical method for identifying indigoid, anthraquinonic, naphtoquinonic, flavonoid, pyrone, pyran, and other related dyes in microsamples from works of art is reported using the voltammetry of microparticles methodology. Products of solid state oxidation/reduction of dyes form a layer on the lateral faces of the dye crystals as suggested by ATR-FTIR and AFM data. This method is based on the sequential application of oxidative and reductive constant-potential polarization steps coupled with the record of square wave voltammograms to solid microsamples of dyes in contact with aqueous electrolytes.
Electrochemical Characterization of Corrosion Products in Leaded Bronze Sculptures Considering Ohmic Drop Effects on Tafel Analysis
2015
[EN] The characterization of corrosion products in leaded bronze based on the voltammetry of immobilized particles methodology is described. Voltammetric data, supported by Fourier transform infra-red spectroscopy, field emission scanning electron microscopy-energy dispersive X-ray microanalysis (FESEM-EDX) and scanning electrochemical microscopy (SECM) allow the identification of copper and lead corrosion materials. The mutual influence of such products is modeled upon considering uncompensated ohmic drops in the Tafel analysis of the rising portion of the respective voltammetric signals for their electrochemical reduction.
Implementing improvisation and songwriting to aid the transition to adulthood for adolelescents with special needs : a case study
2016
Adolescence is a transitional period with many developmental tasks. The adolescents need to resolve the specific question of career choice and establishing authentic friendships. Transition to adulthood is often challenging to the adolescents with special education needs. Research has shown that music can serve as a medium for adolescents’ emotional self-regulation, peer-group affiliation and identity formation. The aim of this case study was to investigate a group music therapy process in which creative music making was utilized. Five adolescents with special education needs participated the sessions during which a group composition was produced. The sessions and the music were recorded an…
My emotions expressed by music
2014
Improvisational psychodynamic music therapy (IPMT) has been demonstrated by Erkkilä et al. (2011) to be effective in the treatment for people suffering from depression. For the purpose of a mixed methods research design all musical improvisations have been captured electronically, the therapist’s notes have been standardized, and the sessions have been recorded and saved. Furthermore, the research team of the university of Jyväskylä has developed a computational analysis software, called Music Therapy Toolbox (MTTB). The purpose of this master’s thesis was to investigate two improvisations from one case in-depth, through the use of the MTTB software. The findings are presented, as well as t…
Clinical, Microscopic and Ultrastructural Findings in a Case of Short Anagen Syndrome
2017
Short anagen syndrome is an uncommon and recently described disease characterized by many telogen hairs and short maximum hair length. We report here the case of a 3-year-old girl whose short, sparse, fine hair since birth was consistent with short anagen syndrome. X-ray microanalysis demonstrated normal composition of the main bioelements of her hairs.
Translation as a Multimodal Negotiation Process
2018
The research presented in this paper aims to render more visible the negotiation process of beginners in German as a foreign language (level A1 and A2) at university, while they translate previously simplified texts from Italian into German using Google Translator. The study belongs in the field of classroom research focusing on the learner´s use of online resources during translating activities. The approach used for the empirical analysis is a multimodal method which is exemplified by analysis of a video sequence. The paper then discusses and evaluates the value of Google Translator as a teaching aid in foreign language classes.