Results 1 to 10 of about 2,147,145 (253)

Intermethod Characterization of Commercially Available Extracellular Vesicles as Reference Materials [PDF]

Biomolecules
The National Institute of Standards and Technology (NIST) is developing analytical methods to characterize extracellular vesicles (EVs) to support the urgent need for standardized EV reference materials (RMs).
Sumeet Poudel, Diane L. Nelson, James H. Yen, Yuefan Wang, Hui Zhang, Zhiyong He, Ashley Beasley Green, Wyatt N. Veerland, Thomas E. Cleveland IV, Sean E. Lehman, Kurt D. Benkstein, Bryant C. Nelson, Lili Wang   +12 more
doaj   +2 more sources

Preparation and Certification of a Soil Total Organic Carbon Reference Material

Yankuang ceshi, 2021
BACKGROUND Soil environmental reference materials are important technical tools for the quality control of soil environmental monitoring. However, there is no self-developed environmental matrix reference material with total organic carbon (TOC).
WANG Yao, TIAN Kan, FENG Yue-peng, WANG Wei   +3 more
doaj   +1 more source

Development of a Water Matrix Certified Reference Material for Volatile Organic Compounds Analysis in Water

Molecules, 2021
Water matrix certified reference material (MCRM) of volatile organic compounds (VOCs) is used to provide quality assurance and quality control (QA/QC) during the analysis of VOCs in water.
Liping Fang, Linyan Huang, Gang Yang, Yang Jiang, Haiping Liu, Bingwen Lu, Yaxian Zhao, Wen Tian   +7 more
doaj   +1 more source

Discussion onthe Data Drift Correction Method in Homogeneity Assessment of Environmental Reference Materials

Yankuang ceshi, 2020
BACKGROUND Assessment of homogeneity of Environmental Reference Material (ERM) is one of the most important steps for the development of an ERM. The data drift has a serious negative effect on the assessment of homogeneity and uncertainty of ERM ...
TIAN Kan, HE Yan-tao, ZHANG Qin, GUO Wei-chen, ZHAO Ya-xian, YUE Ya-ping, YANG Yong   +6 more
doaj   +1 more source

Relativistic material reference systems [PDF]

Physical Review D, 1996
18 pages ...
Brown, J. David, Marolf, Donald
openaire   +3 more sources

Gauging innovation and health impact from biomedical research: survey results and interviews with recipients of EU-funding in the fields of Alzheimer’s disease, breast cancer and prostate cancer

Health Research Policy and Systems, 2023
Biomedical research on Alzheimer’s disease (AD), breast cancer (BC) and prostate cancer (PC) has globally improved our understanding of the etiopathological mechanisms underlying the onset of these diseases, often with the goal to identify associated ...
Francesca Pistollato, Ivana Campia, Evangelos P. Daskalopoulos, Camilla Bernasconi, Christian Desaintes, Sergio Di Virgilio, Christina Kyriakopoulou, Maurice Whelan, Pierre Deceuninck   +8 more
doaj   +1 more source

A study of AlSi5Cu3Mg alloy produced by laser powder bed fusion: porosity assessment, microstructure, mechanical properties

Mechanics & Industry, 2023
After having determined the LPBF additive manufacturing parameters for the AlSi5Cu3Mg alloy by means of a design of experiment method, three tempers are studied on the manufactured test pieces: as built, direct aging and T6.
Mauduit Arnold, Gransac Hervé, Pillot Sébastien, Auguste Pierre   +3 more
doaj   +1 more source

Persistence against benzalkonium chloride promotes rapid evolution of tolerance during periodic disinfection

Nature Communications, 2021
Phenotypically tolerant, persister bacterial subpopulations can survive transient antibiotic treatment and facilitate resistance evolution. Here, Nordholt et al. show that E.
Niclas Nordholt, Orestis Kanaris, Selina B. I. Schmidt, Frank Schreiber   +3 more
doaj   +1 more source

A fluorescently labelled quaternary ammonium compound (NBD-DDA) to study resistance mechanisms in bacteria

Frontiers in Microbiology, 2022
Quaternary ammonium compounds (QACs) are widely used as active agents in disinfectants, antiseptics, and preservatives. Despite being in use since the 1940s, there remain multiple open questions regarding their detailed mode-of-action and the mechanisms,
Niclas Nordholt, Kate O'Hara, Kate O'Hara, Ute Resch-Genger, Mark A. T. Blaskovich, Bastian Rühle, Frank Schreiber   +6 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