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The most widely used definition was developed in 1964 by D. U. Deere. It is the borehole core recovery percentage incorporating only pieces of solid core that are longer than 100 mm in length measured along the centerline of the core. In this respect pieces of core that are not hard and sound should not be counted though they are 100 mm in length.
Continuous functions and a software "QuickRMR" for RMR89 and RMR14 have also been proposed by Kundu. [3] RMR combines the most significant geologic parameters of influence and represents them with one overall comprehensive index of rock mass quality, which is used for the design and construction of excavations in rock, such as tunnels, mines ...
Nowadays the classification system itself is not very often used, but the determination of the RQD as index for rock core quality is standard practice in any geotechnical rock drilling, and is used in many, more recent, rock mass classification systems, such as RMR and Q-system (see above). Rock Structure Rating (RSR)
Redo Rescue, formerly Redo Backup and Recovery, is a free backup and disaster recovery software. It runs from a live CD, a bootable Linux CD image, features a GUI that is a front end to the Partclone command line utility, and is capable of bare-metal backup and recovery of disk partitions. It can use external hard drives and network shares.
An example of an Intel Upgrade Card. The Intel Upgrade Service was a relatively short-lived and controversial program of Intel that allowed some low-end processors to have additional features unlocked by paying a fee and obtaining an activation code that was then entered in a software program, which ran on Windows 7.
The Space Launch System core stage, or simply core stage, is the main stage of the American Space Launch System (SLS) rocket, built by The Boeing Company in the NASA Michoud Assembly Facility. At 65 m (212 ft) tall and 8.4 m (27.6 ft) in diameter, the core stage contains approximately 987 t (2,177,000 lb) of its liquid hydrogen and liquid ...
Image source: The Motley Fool. Yum! Brands (NYSE: YUM) Q4 2024 Earnings Call Feb 06, 2025, 8:15 a.m. ET. Contents: Prepared Remarks. Questions and Answers. Call ...
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