Results 51 to 60 of about 9,161 (139)

Large Deployable Reflector (LDR) system concept and technology definition study. Volume 2: Technology assessment and technology development plan [PDF]

open access: yes
A study was conducted to define reasonable and representative LDR system concepts for the purpose of defining a technology development program aimed at providing the requisite technological capability necessary to start LDR development by the end of 1991.
Agnew, Donald L., Jones, Peter A.
core   +1 more source

A study of the possible preventive effects of muscular exercises and intermittent venous occlusion on the cardiovascular deconditioning observed after 10 days bed recumbency - Experimental design [PDF]

open access: yes
Experiment designed to study preventive effects of muscular exercises on intermittent venous occlusion on cardiovascular deconditioning observed after 10 days bed ...
Beasley, W. C., Cardus, D., Vogt, F. B.
core   +1 more source

Fresh and residual phosphorus uptake by ryegrass from soils with different fertilization histories [PDF]

open access: yes, 2018
Organic farming largely depends on animal manure as a source of phosphorus (P) and the recycling of animal manure globally is becoming increasingly important.
Dubois, David   +5 more
core  

The effect of bedrest on various parameters of physiological function. Part XIII - A review of possible mechanisms of orthostatic intolerance to passive tilt [PDF]

open access: yes
Possible mechanisms of orthostatic intolerance to passive tilt - bed rest and water immersion effects on various parameters of physiological ...
Cardus, D.   +3 more
core   +1 more source

An investigation of the agronomic value of fine grinding and granulating reactive phosphate rocks : a thesis presented in partial fulfilment of the requirements for the degree of Master of Horticultural Science in soil science at Massey University, New Zealand [PDF]

open access: yes, 1990
The future trends in the use of reactive phosphate rocks in New Zealand may be dependent on improving the handling characteristics of these fine sand- and powder-like materials. Granulation of these materials has been suggested as one option.
Officer, Sally Jane
core  

Tracer Applications of Noble Gas Radionuclides in the Geosciences

open access: yes, 2013
The noble gas radionuclides, including 81Kr (half-life = 229,000 yr), 85Kr (11 yr), and 39Ar (269 yr), possess nearly ideal chemical and physical properties for studies of earth and environmental processes.
Fischer, T. P.   +10 more
core   +3 more sources

A proposed method for regeneration of neutron producing targets, within an accelerator, by ion sputtering techniques [PDF]

open access: yes
Sputtering electrode system design for regeneration of targets within ...
Alger, D. L., Steinberg, R.
core   +1 more source

Enzyme-free release of adhered cells from standard culture dishes using intermittent ultrasonic traveling waves. [PDF]

open access: yes, 2019
Cell detachment is essential in culturing adherent cells. Trypsinization is the most popular detachment technique, even though it reduces viability due to the damage to the membrane and extracellular matrix.
Friend, James   +7 more
core   +1 more source

Water system virus detection [PDF]

open access: yes
A monitoring system developed to test the capability of a water recovery system to reject the passage of viruses into the recovered water is described.
Fraser, A. S.   +2 more
core   +1 more source

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