Results 151 to 160 of about 2,571,636 (343)

A Ground Water Quality Summary for Alaska: a Termination Report [PDF]

open access: yes, 1969
The expanding economic activity throughout the State of Alaska has created an urgent demand for water resource data. Ground water quality information is of particular interest since this is the most used source for domestic and industrial supplies ...
Johnson, Phillip R.   +2 more
core  

From Damage to Functionality: Remanufacturing of Thrust Roller Bearings by Tailored Forming

open access: yesAdvanced Engineering Materials, EarlyView.
Herein, the wear and fatigue behavior of repaired bearing raceways with a new powder alloy is investigated using a FE8 test‐rig and an oscillating tribometer. The tests are compared with industrial manufactured bearings to evaluate the repair quality. The repair can extend the service life of the repaired bearing to that of a new bearing and improves ...
Felix Saure   +3 more
wiley   +1 more source

Millimeter-wave atmospheric loss prediction method [PDF]

open access: yes, 1969
Relationship between atmospheric attenuation and the ground temperature and humidity provides a reference from which changes in temperature and humidity will produce a corresponding atmospheric loss figure.
Stelzried, C. T.
core   +1 more source

Application of seismic refraction tomography for determining ground water potential zone in the Qularaisi area, Sulaimaniyah city, NE Iraq

open access: yesContributions to Geophysics and Geodesy
Delineating zones with the potential groundwater contains is a crucial for the effective exploration and extraction of this resource. Six seismic refraction traverses for measuring compressional wave velocities (vp) were conducted in the Qularaisi area ...
Abdulla K. AMIN   +2 more
doaj   +1 more source

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