Results 301 to 310 of about 4,306,777 (346)

AN OPTIMAL DYNAMIC DECISION MODEL FOR FOREST BIOMASS EXPLOITATION

IFAC Proceedings Volumes, 2002
Abstract A decision support system for forest biomass exploitation for energy supply is presented. The system allows supporting decisions on a finite time horizon, concerning the localization, sizing, and setting of a number of biomass-to-energy conversion plants in a small-medium region.
Freppaz, Davide, Minciardi, Riccardo, Robba, Michela, Sacile, Roberto   +3 more
openaire   +2 more sources

The cause of Barents Sea biomass dynamics

Journal of Marine Systems, 2004
The fluctuations of the biomasses in the Barents Sea have been poorly understood and caused problems in biomass management. Better long-term forecasting is thus crucial for an economical and sustainable utilization of the biomass. The present paper presents a wavelet analysis of the Kola temperature series and the biomass time series of Barents Sea ...
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Dynamics of artificially immobilizedNitrosomonas europaea: Effect of biomass decay

Biotechnology and Bioengineering, 1997
The dynamics of growth and death of immobilized Nitrosomonas europaea were studied. For this, the death rate of suspended cells was determined in the absence of ammonium or oxygen by following the loss of respiration activity and by fluorescein-diacetate (FDA)/lissamine-green staining techniques.
Leenen, E.J.T.M., Boogert, A.A., van Lammeren, A.A.M., Tramper, J., Wijffels, R.H.   +4 more
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The RAINFOR database: monitoring forest biomass and dynamics

Journal of Vegetation Science, 2007
AbstractProblem: Data from over 100 permanent sample plots which have been studied for 10–20 years need a suitable system for storage which allows simple data manipulation and retrieval for analysis.Methods: A relational database linking tree records, taxonomic nomenclature and corresponding environmental data has been built in MS Access as part of ...
J. Peacock, T.R. Baker, S.L. Lewis, G. Lopez‐Gonzalez, O.L. Phillips   +4 more
openaire   +1 more source

Long-term dynamics and drivers of phytoplankton biomass in eutrophic Lake Taihu.

Science of the Total Environment, 2018
Understanding the relative effect sizes of climate-related environmental variables and nutrients on the high annual variation in the phytoplankton biomass in eutrophic lakes is important for lake management efforts.
M. Zhang, Xiaoli Shi, Zhen Yang, Yang Yu, Limei Shi, B. Qin   +5 more
semanticscholar   +1 more source

Behavior of integral models of biomass dynamics

Cybernetics, 1991
Summary: We investigate the properties of the integral model of the dynamics of biomass density. We show that boundedness of the solutions in the integral model is determined by the properties of the local model. We examine the conditions for the appearance of stable nonhomogeneous distributions under homogeneous and stationary external conditions.
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Productivity, Biomass, and Population Dynamics in Amazonian Water Bodies

1975
The rain forest area of Amazonia, although topographically and climatically only slightly differentiated, is inhomogeneous in its ecological structure. According to its geological makeup it is divided into several regions that are defined geochemically and can be characterized ecologically (Fittkau, 1969, 1970, 1971).
Fittkau, E., Irmler, U., Junk, W., Reiss, F., Schmidt, G.   +4 more
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The Dynamic Model of Willow Biomass Production

2018
The paper presents methods and tools for building computer simulation models for supporting decision-making activities. The cultivation of energy crops for biomass production is a continuous process in which delays are very important along with other factors the values of which may denote a function of many parameters. The harvest of energy plants is a
Artur Wójcik, Krzysztof Krupa, Bogusława Łapczyńska-Kondon, Sławomir Francik, Dariusz Kwaśniewski   +4 more
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Biomass and Nutrient Dynamics of Restored Neotropical Forests

Water, Air and Soil Pollution: Focus, 2004
Restoring species-rich tropical forests is an important activity because it helps mitigate land deforestation and degradation. However, scientific understanding of the ecological processes responsible for forest restoration is poor. We review the literature to synthesize the current state of understanding of tropical forest restoration from a ...
Ariel E. Lugo, Whendee L. Silver, Sandra Molina Colón   +2 more
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Feeding of Biomass into Gasifiers and Pyrolysis Units, Using a Dynamic Biomass Seal

1993
A seal was established in a biomass feeder able to feed up to 100 kg straw per hour. The seal was tested with 3 different orifices. Leak rates were measured and found to be between 0–10 litres per minute with a pressure difference from −10 to 40 mbar over the seal, and energy consumption of 3 to 10 W per kg straw per hour.
Thomas Koch, Thomas Koch Energi, Reto Michael Hummelshøj, Knud Kristiansen   +3 more
openaire   +1 more source