Results 111 to 120 of about 18,849 (217)

Definition of a resistojet control system for the Manned Orbital Research Laboratory. Volume 3 - Biowaste utilization Final report [PDF]

open access: yes
Biowaste utilization analysis for defining resistojet control system for Manned Orbital Research ...
Byke, R. M.   +2 more
core   +1 more source

Organic residues - a resource for arable soils [PDF]

open access: yes, 2005
An increased recirculation of urban organic residues to arable soils has several environmental benefits, but there is a need for reliable test systems to ensure that soil quality is maintained.
Odlare, Monica
core  

Gravity sensitivity of a resistojet water vaporizer [PDF]

open access: yes
A laboratory model of a water vaporizer for resistojet applications was designed, fabricated, and steady and transient characteristics were measured. Vaporizer operation was not impacted by rotation about a horizontal axis normal to its own.
Morren, W. Earl
core   +1 more source

Editorial: Biowaste valorization utilizing microbial systems

open access: yesFrontiers in Microbiology, 2023
Debarati Paul   +3 more
openaire   +3 more sources

Synthesis of Lignin Nanoparticles: Top-Down and Bottom-Up Approaches

open access: yesMedical Sciences Forum
Lignin, a main byproduct from paper manufacturing and biorefineries, is now emerging as a new low-cost, renewable starting material for new product development. Its biocompatibility and safety make it valuable for creating novel and value-added products.
Rossella Grappa   +4 more
doaj   +1 more source

Waste composts as nitrogen fertilizers for forage leys

open access: yesAgricultural and Food Science, 2008
Two field experiments, conventional grass ley and organic grass-clover ley, were established with barley as a nurse crop in spring 2000 and given either low or high fertilization with mineral fertilizer (Mineral) or composts.
T. TONTTI, A. NYKÄNEN, M. KUISMA
doaj  

Microwave-assisted green synthesis, characterization, and in vitro antibacterial activity of NiO nanoparticles obtained from lemon peel extract

open access: yesGreen Processing and Synthesis
In the realm of nanotechnology, the synthesis of nanoparticles using environmentally benign methods, such as using plant extracts, has garnered significant attention.
Heng Mei Hsuan   +10 more
doaj   +1 more source

Power needs for electric propulsion [PDF]

open access: yes
Power supplies for spacecraft electric propulsion ...
Mickelsen, W. R.
core   +1 more source

The promotion of renewable energy sources: European experiences and steps forward [PDF]

open access: yes
This study investigates the instruments used by governments in order to support renewable energy sources in the European Union. The findings of this study reveal that policy goals could be achieved by using a large variety of instruments and renewable ...
Andreea ZAMFIR
core  

Automated biowaste sampling system urine subsystem operating model, part 1 [PDF]

open access: yes
The urine subsystem automatically provides for the collection, volume sensing, and sampling of urine from six subjects during space flight. Verification of the subsystem design was a primary objective of the current effort which was accomplished thru the
Fogal, G. L.   +2 more
core   +1 more source

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