Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Andrea Held"'
Autor:
Carlo Giussani, Andrea Trezza, Vittorio Ricciuti, Andrea Di Cristofori, Andrea Held, Valeria Isella, Maura Massimino
Publikováno v:
Child's Nervous System. 38:1445-1454
Purpose: The extent of brain tumor resection (EOR) is a fundamental prognostic factor in pediatric neuro-oncology in association with the histology. In general, resection aims at gross total resection (GTR). Intraoperative imaging like intraoperative
Autor:
Ulf Jacobsson, Rita La Spina, Claudia Cella, Douglas Gilliland, John Seghers, Dora Mehn, Andrea Held, Elzbieta Stefaniak, Håkan Emteborg
Publikováno v:
Analytical and Bioanalytical Chemistry
Validation of analytical methods for measurements of microplastics (MP) is severely hampered because of a general lack of reference materials, RM. There is a great need to develop such reference materials. This study presents a concept of three-compo
Publikováno v:
Analytical and Bioanalytical Chemistry
The existing Air Quality Directive 2008/50/EC establishes within the European Union (EU) member states limit values for fine air particulate matter (PM2.5) including the possibility to discount natural sources of pollution when assessing compliance w
Autor:
John Seghers, Håkan Emteborg, Marie-France Tumba-Tshilumba, Andrea Held, James Snell, Giovanni Emma, Jean Charoud-Got, Anna Santoro
Publikováno v:
Analytical and Bioanalytical Chemistry. 409:7121-7131
A reference material of a PM2.5-like atmospheric dust material has been prepared using a newly developed method. It is intended to certify values for the mass fraction of SO4 2−, NO3 −, Cl− (anions) and Na+, K+, NH4 +, Ca2+, Mg2+ (cations) in t
Autor:
Annarita Baldan, R. Hearn, Paul J. Brewer, Andrea Held, Manuela Ulberth-Buchgraber, Adriaan M. H. van der Veen, Hugo Ent, Richard J. C. Brown, Romeu J. Daroda, Michele M. Schantz, Brian E. Lang, Valnei S. Cunha
Publikováno v:
Accreditation and Quality Assurance. 18:41-50
The main objective of the reference materials for biofuel specifications (BIOREMA) project is the development of two test materials (one bio-ethanol material and one biodiesel material) with well-established reference values. Of a series of three pap
Autor:
Stephen A. Wise, Annarita Baldan, Valnei S. Cunha, Paul J. Brewer, Adriaan M. H. van der Veen, Richard J. C. Brown, Hugo Ent, Romeu J. Daroda, Michele M. Schantz, Andrea Held, Gavin O'Connor, Manuela Ulberth-Buchgraber
Publikováno v:
Accreditation and Quality Assurance. 18:19-28
There is an increasing demand to accurately measure the quality of biofuel products (e.g. biodiesel and bio-ethanol). This demand is driven in Europe by directives promoting the use of renewable sources of energy and worldwide by national and interna
Autor:
Gert Roebben, Andrea Held, Guy Auclair, Katarzyna Drozdzewska, Thomas P. J. Linsinger, Vikram Kestens
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 99:245-261
In this study, the use of differential scanning calorimetry (DSC) is demonstrated as a powerful technique that can provide accurate thermodynamic property values of environmental contaminants such as polycyclic aromatic hydrocarbons (PAHs). In total,
Publikováno v:
Accreditation and Quality Assurance. 14:529-540
An alternative approach for the reliable quantification of short-chain chlorinated paraffins (SCCPs) in sediment and soil, based on the existing method of carbon skeleton gas chromatography is presented. The method is proposed to establish an operati
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 88:757-762
The application of differential scanning calorimetry (DSC) for purity determination is well documented in literature and is used amongst others in the analysis of pure organic crystalline compounds. The aim of this work is to examine whether the DSC
Autor:
Gaida Lapitajs, Gert Roebben, Håkan Emteborg, Thomas P. J. Linsinger, Philippe Corbisier, Andrée Lamberty, Alexander Bernreuther, Hendrik Emons, Stefanie Trapmann, Marta Dabrio, Andrea Held, Franz Ulberth, Marina Ricci
Publikováno v:
Accreditation and Quality Assurance. 12:167-174
The potential approaches for third-party assessment of reference material producers are revisited and the activities of the Reference Materials (RM) Unit of the Institute for Reference Materials and Measurements (IRMM) to obtain accreditation to ISO