Results 91 to 100 of about 565,672 (242)

Ultrasonic Planetary Core Drill: Overview and Results from Field Trial [PDF]

open access: yes, 2017
In the effort to explore the subsurface of terrestrial bodies, we seek to obtain better samples from ever greater depths. Many organisations are working towards technologies that can achieve this goal whilst ensuring compatibility with the likely ...
Harkness, Patrick   +4 more
core  

Hand drill adapter limits holes to desired depth [PDF]

open access: yes, 1966
Adjustable adapter fastened to the shank of a drill bit limits the depth of bored holes.

core   +1 more source

Universal router concept [PDF]

open access: yes, 1970
Portable universal router can cut holes of large diameter and irregular shapes, machine recesses, and drill holes with certain edge-distance limitations.
Pesch, W. A.
core   +1 more source

Iris-leaf core retainer for a surface drill [PDF]

open access: yes, 1969
Iris-leaf core retainer insures retention of a complete sample within the drill string. Individual overlapping leaves will not rupture or tear out when they come in contact with the oncoming ...
Olivari, H.
core   +1 more source

The Effect of a Disaster Nursing Education Program on Nurses’ Preparedness for Responding to Probable Natural Disasters

open access: yesنشریه پرستاری ایران, 2011
Background & Aims: Nurses, as the pioneers of healthcare in societies, play an important role before, during, and after disasters. Enhancement of their professional skills for the purpose of helping the injured is one of the basic principles in health ...
Ghanbari V   +4 more
doaj  

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