Results 11 to 20 of about 18,697,629 (340)

The use of ASH-15 flowstone as a matrix-matched reference material for laser-ablation U − Pb geochronology of calcite

Geochronology, 2020
. Latest advances in laser ablation inductively coupled plasma mass spectrometer (LA-ICPMS) allow for accurate in situ U−Pb dating of carbonate material, with final age uncertainties usually >3 % 2σ.
P. Nuriel, J. Wotzlaw, M. Ovtcharova, A. Vaks, C. Stremtan, Martin Šala, N. Roberts, A. Kylander‐Clark   +7 more
semanticscholar   +1 more source

Preparation and certification of wheat flour reference material for tenuazonic acid and tentoxin using isotope dilution- liquid chromatography-tandem mass spectrometry

Zhongguo shipin weisheng zazhi, 2021
ObjectiveA method for the preparation and certification of the reference material of tenuazonic acid(TeA) and tentoxin (TEN) in wheat flour was developed.MethodsThe reference material of TeA and TEN in wheat flour was prepared from grain which naturally ...
XIE Ji'an, LIU Bolin, ZHAO Ziwei, YANG Xin, ZHANG Lei, YANG Dajin, ZHAO Yunfeng   +6 more
doaj   +1 more source

Types, Production and Validation of Reference Materials for Viral Genetic Testing

Annals of Clinical Microbiology, 2020
Molecular diagnostic techniques are used for the diagnosis and monitoring of viral infections. The performance of the in vitro diagnostic assays is important for an accurate and prompt diagnosis. Positive clinical samples or reference materials (RMs) are
Eun-Jung Cho, Eun Jin Lee, Younggil Cha, Nuri Lee, Ki Ho Hong, Hee Jin Huh, Young Joo Cha, Hyun Soo Kim   +7 more
doaj   +1 more source

Reference Materials [PDF]

Clinical Chemistry and Laboratory Medicine, 1991
This paper summarizes the practical experience gained in the Federal Republic of Germany in connection with the development and implementation of a national reference system. The National Reference System is set forth in: 1. the New Calibration Act 1986 (Neufassung des Eichgesetzes vom 22. Februar 1985. Bundesgesetzblatt 1985, Teil I, 410-422); 2.
openaire   +3 more sources

Plurilinguisme des élèves en classe ordinaire dans le premier degré : que trouve-t-on dans la « boite à outils » des enseignants ?

Repères, 2022
We examine the “toolbox” which pre-service and in-service primary school teachers have at their disposal for incorporating multilingualism as an aid to learning French, particularly in mainstream classes.
Lucile Cadet, Nacéra Aifi, Joanna Chischportich, Laurence Corny, Prisca Fenoglio, Frédérique Masson   +5 more
doaj   +1 more source

The generation and use of recombinant extracellular vesicles as biological reference material

Nature Communications, 2019
Recent years have seen an increase of extracellular vesicle (EV) research geared towards biological understanding, diagnostics and therapy. However, EV data interpretation remains challenging owing to complexity of biofluids and technical variation ...
E. Geeurickx, Joeri Tulkens, Bert Dhondt, J. Van Deun, L. Lippens, Glenn Vergauwen, Elizabeth Heyrman, Delphine De Sutter, K. Gevaert, Francis Impens, I. Miinalainen, P. Van Bockstal, T. De Beer, M. Wauben, Esther N M Nolte-'t-Hoen, Katarzyna Bloch, J. Swinnen, Edwin van der Pol, R. Nieuwland, G. Braems, N. Callewaert, P. Mestdagh, J. Vandesompele, H. Denys, S. Eyckerman, O. De Wever, A. Hendrix   +26 more
semanticscholar   +1 more source

Direct Calibration Method for LA-HR-ICP-MS Apatite U-Pb Dating

Yankuang ceshi, 2022
BACKGROUND Apatite is a common U-bearing accessory mineral with a U-Pb closure temperature of ~500℃, making U-Pb dating of apatite a potentially valuable thermochronometer.
ZHAO Linghao, ZHAN Xiuchun, ZENG Lingsen, HU Mingyue, SUN Dongyang, YUAN Jihai   +5 more
doaj   +1 more source

Chlorophylls and Bacteriochlorophylls: Biochemistry, Biophysics, Functions and Applications [PDF]

, 2005
Supplementary material to this book contains the following Adobe-Writer (.pdf) files: an overview of the material, the color coding for the map on the title page), and supporting information for chapter 1, 14, 20, 22 and 30.
Grimm, Bernhard, Porra, Robert J., Rüdiger, Wolfhart, Scheer, Hugo   +3 more
core   +2 more sources

Preparation of Standard Material for Composition Analysis of Manganese Ore

Yankuang ceshi, 2022
BACKGROUND The toxic and hazardous elements in manganese ore not only affect manganese purification, production environment and product quality, but have also always been a technical problem in the manganese industry and particularly in experimental ...
WANG Ganzhen, PENG Jun, LI Li, QIN Yi, CAO Jian, TIAN Zongping   +5 more
doaj   +1 more source

Optimisation of imaging flow cytometry for the analysis of single extracellular vesicles by using fluorescence-tagged vesicles as biological reference material

Journal of Extracellular Vesicles, 2019
Extracellular vesicles (EVs) mediate targeted cellular interactions in normal and pathophysiological conditions and are increasingly recognised as potential biomarkers, therapeutic agents and drug delivery vehicles.
A. Görgens, Michel Bremer, Rita Ferrer-Tur, Florian Murke, T. Tertel, P. Horn, S. Thalmann, J. Welsh, C. Probst, C. Guerin, C. Boulanger, Jennifer C. Jones, H. Hanenberg, U. Erdbrügger, J. Lannigan, F. Ricklefs, S. El-Andaloussi, B. Giebel   +17 more
semanticscholar   +1 more source