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73 Newest Publications about the topic calibration standards

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Resurrecting dirty atomic force microscopy calibration standards

28-May-2010 | Donald A. Chernoff and Robert Sherman, Journal of Vacuum Science & Technology B, 2010

Cleanliness of atomic force microscopy samples before imaging has always posed questions for users. The same is true for height calibration standards. In this shop note, the authors discuss using CO2 snow cleaning as a way to clean heavily contaminated standards and show its effectiveness in ...

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In vitro antioxidant activity of tocopherols and tocotrienols and comparison of vitamin E concentration and lipophilic antioxidant capacity in human plasma

01-May-2010 | Müller, Lars; Theile, Kathleen; Böhm, Volker, Molecular Nutrition & Food Research, 2010

A comparative study investigated four tocopherols, four tocotrienols, and [alpha]-tocopheryl acetate on their antioxidative activities in five different popular assays, which were adapted to non-polar antioxidants. [alpha]-Tocopherol, used as calibration standard, showed the highest ferric ...

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Diffraction gratings as small-angle X-ray scattering calibration standards

15-Mar-2010 | Journal of Applied Crystallography, 2010

It is shown that diffraction gratings can be used as accurate momentum-transfer calibration standards in small-angle X-ray scattering experiments. For demonstration purposes, a silicon diffraction grating with a period of 400 nm is used. The data exhibit 50 diffraction peaks evenly distributed ...

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