Engineering topics

Ziegler, Michael

Publications and source records attributed to Ziegler, Michael.

2 records

NASA NTRS2015

2014 Cardiovascular Risks SRP Evidence Review Final Report

The 2014 Cardiovascular Risks Standing Review Panel (from here on referred to as the SRP) met for a site visit in Houston, TX on December 17-18, 2014. The SRP reviewed the updated evidence report for The Risk of Orthostatic Intolerance During re-Exposure to Gravity (OI Risk). The SRP found the 2014 OI Evidence Report to be a well written, comprehensive overview of the OI risk; that clearly documents the key scientific evidence relevant for both mechanistic understanding and countermeasure development. The 2014 OI Evidence Report could be further strengthened by addressing the points discussed below.

Steinberg, Susan↗

NASA NTRS1990

Radiation damage in a Tektronix 512 CCD

A Tektronix CCD was subjected to a proton beam. Comparisons were made of the CCD characteristics before, during, and after radiation. Gain and readout noise were not affected and charge transfer efficiency, full well, and dark current were. Permanent CTE damage resulted immediately upon radiation, but full well damage developed two days after radiation, while the dark current showed signs of recovery before permanent damage occurred. Histogram analysis showed that the most spiky-type behavior resulted from damage to defects existing in the CCD before radiation.

Brown, Larry W.↗