Results 11 to 20 of about 1,529,236 (269)
Nitrogen isotopes reveal a particulate-matter-driven biogeochemical reactor in a temperate estuary [PDF]
Biogeosciences, 2022 Estuaries and rivers are important biogeochemical reactors that act to modify the loads and composition of nutrients in the coastal zone. In a case study during July 2013, we sampled an 80 km transect along the Elbe Estuary under low-oxygen conditions ...
K. Dähnke +3 more
doaj +1 more source
Alkalinity and nitrate dynamics reveal dominance of anammox in a hyper-turbid estuary [PDF]
Biogeosciences, 2023 Total alkalinity (TA) regulates the oceanic storage capacity of atmospheric CO2. In heterotrophic temperate estuaries, anaerobic respiration of organic matter, e.g., by denitrification, can be an important source of TA.
M. Norbisrath +8 more
doaj +1 more source
Suspended particulate matter drives the spatial segregation of nitrogen turnover along the hyper-turbid Ems estuary [PDF]
Biogeosciences, 2022 Estuaries are nutrient filters and change riverine nutrient loads before they reach coastal oceans. Their morphology have been extensively changed by anthropogenic activities like draining, deepening and dredging to meet economic and social demand ...
G. Schulz +7 more
doaj +1 more source
Long cycles, heavy cycles and cycle decompositions in digraphs [PDF]
Journal of Combinatorial Theory, Series B, 2021 Hajós conjectured in 1968 that every Eulerian \(n\)-vertex graph can be decomposed into at most $\lfloor (n-1)/2\rfloor$ edge-disjoint cycles. This has been confirmed for some special graph classes, but the general case remains open. In a sequence of papers by Bienia and Meyniel (1986), Dean (1986), and Bollobás and Scott (1996) it was analogously ...
Charlotte Knierim +3 more
openaire +2 more sources
Mesoscale Advective and Biological Processes Alter Carbon Uptake Capacity in a Shelf Sea
Frontiers in Marine Science, 2022 Marine uptake of carbon dioxide reduces the accumulation of carbon dioxide in the atmosphere. Continental shelf seas are essential for carbon uptake from the atmosphere, but are also highly variable environments, for which uncertainties of carbon budget ...
Vlad A. Macovei +3 more
doaj +1 more source
LIFE CYCLE OF PRODUCTS AND CYCLES [PDF]
Macroeconomic Dynamics, 2010 The aim of this paper is to examine whether the development of waste recycling activities can be a source of economic fluctuations. We assume that the recycling sector has four fundamental characteristics. (i) The production factors are restricted by the production of the last period.
de Beir, Jean +2 more
openaire +5 more sources
Correction of inter-mission inconsistencies in merged ocean colour satellite data
Frontiers in Remote Sensing, 2022 Consistency in a time series of ocean colour satellite data is essential when determining long-term trends and statistics in Essential Climate Variables.
Marit van Oostende +4 more
doaj +1 more source
Monetary Cycles, Financial Cycles and the Business Cycle [PDF]
SSRN Electronic Journal, 2010 One of the most robust stylized facts in macroeconomics is the forecasting power of the term spread for future real activity. The economic rationale for this forecasting power usually appeals to expectations of future interest rates, which affect the slope of the term structure.
Tobias Adrian +2 more
openaire +3 more sources
Nature Communications, 2022 A new study finds supply-side efforts alone are unlikely to lead to net-zero emissions across the cement and concrete cycle by 2050, advocating for more efficient use of cement and concrete in the built environment and more strategic options for ...
Takuma Watari +3 more
doaj +1 more source
Clustering Cycles into Cycles of Clusters [PDF]
Journal of Graph Algorithms and Applications, 2005 Summary: We study simple families of clustered graphs that are highly unconnected. We start by studying 3-cluster cycles, which are clustered graphs such that the underlying graph is a simple cycle and there are three clusters all at the same level. We show that in this case, testing the c-planarity can be done efficiently and give an efficient drawing
Pier Francesco Cortese +3 more
openaire +3 more sources