Results 251 to 260 of about 29,439,894 (304)
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Science of The Total Environment, 2021
In the attempt to close nutrient cycles, organic fertilizers and soil improvers are getting interest as renewable P sources for crops. However, both the P availability of these compounds for crops and the underlying mechanisms are not fully understood. In this study composts (n = 8), biochars (n = 5), animal manure and processed animal manure (n = 13),
Vanden Nest, Thijs +5 more
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In the attempt to close nutrient cycles, organic fertilizers and soil improvers are getting interest as renewable P sources for crops. However, both the P availability of these compounds for crops and the underlying mechanisms are not fully understood. In this study composts (n = 8), biochars (n = 5), animal manure and processed animal manure (n = 13),
Vanden Nest, Thijs +5 more
openaire +3 more sources
Investigations into Improving Dewaterability at a Bio‐P/Anaerobic Digestion Plant
Water Environment Research, 2016ABSTRACT: Metropolitan Council Environmental Services has observed poorer than expected dewatering performance at its Empire Plant. This plant has both anaerobic digestion and enhanced biological phosphorus removal in its treatment train. A research program using pilot‐scale anaerobic digesters investigated potential solutions to the plant's poor ...
Rebecca, Alm +3 more
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Substance P Distribution in the Digestive Tract.
Acta Physiologica Scandinavica, 1951Summary.1. Substance P is found in the small intestine in the greatest concentration in the duodenum and the jejunum. In colon and rectum the amount of the substance is high.2. The highest concentration of substance P is found in the muscular coat of the mucous membrane.
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Effect of variation in the C/[N+P] ratio on anaerobic digestion
Environmental Progress & Sustainable Energy, 2018The importance of the balance between the nutrients in the anaerobic digestion process was assessed at laboratory scale. A soluble synthetic solution was used as substrate. The variable used to monitor the proportion of nutrients in the substrate was the [C]/[N + P] ratio expressed as equivalents of each element.
Aida Gil +4 more
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Verteerbaar P in de varkensvoeding : Digestible P in the feeding of pigs
1988Tot nu toe werd de voedingswaarde van fosfor in veevoeders voor varkens uitgedrukt in het gehalte aan beschikbaar P, waarbij geen rekening werd gehouden met de chemische bindingsvorm van het anorganisch gebonden P, noch met specifieke eigenschappen van de grondstof zelf.
Jongbloed, A.W. +2 more
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NAD(P)H and F420 Fluorescence Monitoring in Anaerobic Digestion
IFAC Proceedings Volumes, 1992Abstract Anaerobic digesters are frequently upset by changes in the feed strength, changes in environmental conditions and toxic feed components. These can cause reactor failures and lead to lengthy and costly start-ups. Real-time on-line measurements are needed to assess the state of the digester and guide effective process control strategies.
J.M. Owens +3 more
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The Journal of Agricultural Science, 1974
SummarySheep prepared either with a rumen cannula, or with a rumen cannula plus re-entrant cannulae in the duodenum and ileum were fed fresh ‘Ruanui’ perennial ryegrass (R), ‘Manawa’ short-rotation ryegrass (M) and white clover (C) at dry-matter intakes ranging from 450 to 1000 g/24 h.
N. D. Grace, M. J. Ulyatt, J. C. Macrae
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SummarySheep prepared either with a rumen cannula, or with a rumen cannula plus re-entrant cannulae in the duodenum and ileum were fed fresh ‘Ruanui’ perennial ryegrass (R), ‘Manawa’ short-rotation ryegrass (M) and white clover (C) at dry-matter intakes ranging from 450 to 1000 g/24 h.
N. D. Grace, M. J. Ulyatt, J. C. Macrae
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Ontogeny of substance P in the digestive tract, spinal cord and hypothalamus of the human fetus
Regulatory Peptides, 1986The time of appearance and tissue concentrations of substance P-like immunoreactivity (SP-LI) were studied in 53 human fetuses aged 8-21 weeks. Detectable amounts were present at 8 weeks of gestation in available fragments of spinal cord and intestine.
C, Paulin +4 more
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Biogas digestates affect crop P uptake and soil microbial community composition
Science of The Total Environment, 2016Fermentation residues from biogas production are known as valuable organic fertilisers. This study deals with the effect of cattle slurry, co-digested cattle slurry, co-digested energy crops and mineral fertilisers on the activity and composition of soil microbiota.
Sebastian, Hupfauf +4 more
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