From the tragedy of the space shuttle Columbia disaster in 2003 to the now-routine return of commercial spacecraft, heat shields—formally called thermal protection systems—are critical for protecting ...

Internet of Things (IoT)-based safety equipment system can enhance the working conditions and safeguard. Working environment for sanitary workers can be improvised through IoT. The system makes use of ...

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48.2 x 32.4 cm. (19 x 12.8 in.) Subscribe now to view details for this work, and gain access to over 18 million auction results. Purchase One-Day Pass ...