Results 81 to 90 of about 513,317 (192)
Wood wasp inspired space and earth drill [PDF]
, 2010 In this chapter, we explain why the low gravity encountered on Mars or on the Moon and the low mass of the probes, landers and rovers that carry drilling devices limit classical drilling techniques.
Coste, Pierre +3 more
core
نشریه 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
Drill/borescope System for the Mars Polar Pathfinder [PDF]
The primary goals of the Mars Polar Pathfinder (MPP) Discovery Mission are to characterize the composition and structure of Mars' north polar ice cap, and to determine whether a climate record may be preserved in layers of ice and dust.
Paige, D. A. +2 more
core +1 more source
Automatic Fastening Large Structures: a New Approach [PDF]
, 1985 The external tank (ET) intertank structure for the space shuttle, a 27.5 ft diameter 22.5 ft long externally stiffened mechanically fastened skin-stringer-frame structure, was a labor intensitive manual structure built on a modified Saturn tooling ...
Lumley, D. F.
core +1 more source
Study of sample drilling techniques for Mars sample return missions [PDF]
To demonstrate the feasibility of acquiring various surface samples for a Mars sample return mission the following tasks were performed: (1) design of a Mars rover-mounted drill system capable of acquiring crystalline rock cores; prediction of ...
Harris, P. T., Mitchell, D. C.
core +1 more source
PENGARUH METODE LATIHAN LOOSE HANDS DRILL DAN STEP BACK DRILL TERHADAP SPEED BAT HASIL PUKULAN UNTUK CABANG OLAHRAGA SOFTBALL [PDF]
, 2017 Penelitian ini menguraikan pengamatan tentang metode latihan loosehands drill dan step back drill terhadap speed bat pada atlet atau pemain softball. Masalah dalam penelitian ini adalah masih rendahnya atlet atau pemain softball saat memukul bola dengan ...
Fitriani, Febina
core
Core break-off mechanism [PDF]
, 2003 A mechanism for breaking off and retaining a core sample of a drill drilled into a ground substrate has an outer drill tube and an inner core break-off tube sleeved inside the drill tube.
Myrick, Thomas M.
core +1 more source
, 2009 In the oil and gas industry, an underreamer is a tool used to extend and enlarge the diameter of a previously-drilled bore. The problem proposed to the Study Group is to obtain appropriate mathematical models of underreamer dynamics, in forms that will ...
Barton, David +8 more
core
Active noise control on high frequency narrow band dental drill noise: Preliminary results [PDF]
, 2007 Dental drills produce a characteristic noise that is uncomfortable for patients and is also known to be harmful to dentists under prolonged exposure. It is therefore desirable to protect the patient and dentist whilst allowing two-way communication.
Atherton, MA +3 more
core