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Article
Open AccessAnatase TiO2 deposited at low temperature by pulsing an electron cyclotron wave resonance plasma source
Photocatalytic surfaces have the potentiality to respond to many of nowadays societal concerns such as clean H2 generation, CO2 conversion, organic pollutant removal or virus inactivation. Despite its numerous su...
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Article
Microstructure and Photocatalytic Properties of TiO2–Reduced Graphene Oxide Nanocomposites Prepared by Solvothermal Method
TiO2–reduced graphene oxide (RGO) nanocomposites have been prepared by a solvothermal method using Ti(SO4)2 and graphene oxide (GO) in aqueous/ethanol suspension and their microstructure and optical and photocata...
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Article
Annealing and biasing effects on the structural and optical properties of PECVD-grown TiO2 films from TTIP/O2 plasma
This work presents a study of the structural, morphological, and optical properties of titanium dioxide thin films prepared via plasma enhanced chemical vapour deposition at the floating potential (Vf) or substra...
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Article
Estimation of autotrophic and heterotrophic components of soil respiration by trenching is sensitive to corrections for root decomposition and changes in soil water content
This study aims to assess the effects of corrections for disturbances such as an increased amount of dead roots and an increase in volumetric soil water content on the calculation of soil CO2 efflux partitioning....
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Article
Plasticity in hydraulic architecture of Scots pine across Eurasia
Widespread tree species must show physiological and structural plasticity to deal with contrasting water balance conditions. To investigate these plasticity mechanisms, a meta-analysis of Pinus sylvestris L. sap ...
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Article
Study of magnetic field influence on charged species in a low pressure helicon reactor
The variation of electron density (n e), ion flux and emission of argon lines were investigated in a rf helicon reactor for different static magnetic field amplitude and rf power using Langmuir pr...
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Article
Europe-wide reduction in primary productivity caused by the heat and drought in 2003
The European heatwave in the summer of 2003 was probably the hottest in the region since AD 1500. Its immediate effects are well documented: the Earth Policy Institute has estimated that it caused at least 35,000...
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Article
Comparing CO2 Storage and Advection Conditions at Night at Different Carboeuroflux Sites
Anemometer and CO2 concentration data from temporary campaigns performed at six CARBOEUROFLUX forest sites were used to estimate the importance of non-turbulent fluxes in nighttime conditions. While storage was o...
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Article
Predicting the onset of net carbon uptake by deciduous forests with soil temperature and climate data: a synthesis of FLUXNET data
We tested the hypothesis that the date of the onset of net carbon uptake by temperate deciduous forest canopies corresponds with the time when the mean daily soil temperature equals the mean annual air tempera...
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Article
Climate-tree-growth relationships of European beech (Fagus sylvatica L.) in the French Permanent Plot Network (RENECOFOR)
The influence of climate on the radial growth of Fagus sylvatica was investigated using 15 chronologies developed from mature stands of the French Permanent Plot Network (RENECOFOR) growing under different climat...
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Article
Quality analysis applied on eddy covariance measurements at complex forest sites using footprint modelling
Measuring turbulent fluxes with the eddy covariance method has become a widely accepted and powerful tool for the determination of long term data sets for the exchange of momentum, sensible and latent heat, an...
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Article
Long-term variations in leaf area index and light extinction in a Fagus sylvatica stand as estimated from global radiation profiles
The paper presents a model that estimates leaf area index (LAI) from above- and below-canopy global radiation measurements. The approach is based on a detailed description of radiation regime above and below t...
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Chapter
Deciduous Forests: Carbon and Water Fluxes, Balances and Ecophysiological Determinants
Among the five EUROFLUX broad-leaved sites, four are beech stands and one is a poplar plantation. These sites are spread over a wide range of climatic conditions: mid-oceanic (France), continental (Germany) an...
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Chapter
A Model-Based Study of Carbon Fluxes at Ten European Forest Sites
During the International Biological Program (IBP), systematic investigations of carbon flow through ecosystems and the structuring of carbon pools within ecosystems were carried out for the first time across t...
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Article
Analysis of Low-k Organosilicon and Low-Density Silica Films Deposited in HMDSO Plasmas
Low-dielectric constant (low-k) films have been prepared by plasma-enhanced chemical vapor deposition from hexamethyldisiloxane (HMDSO). The films are analyzed by ellipsometry, infrared absorption spectroscopy wh...
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Article
Carbon nanotubes and nanostructures grown from diamond-like carbon and polyethylene
We report a simple way to synthesize carbon nanotubes and nanostructures from the solid phase. Vacuum annealing of diamond-like carbon (DLC) films or polyethylene mixed with catalyst in argon atmosphere leads ...
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Article
Respiration as the main determinant of carbon balance in European forests
Carbon exchange between the terrestrial biosphere and the atmosphere is one of the key processes that need to be assessed in the context of the Kyoto Protocol1. Several studies suggest that the terrestrial biosph...
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Article
Comparisons of xylem sap flow and water vapour flux at the stand level and derivation of canopy conductance for Scots pine
Simultaneous measurements of xylem sap flow and water vapour flux over a Scots pine (Pinus sylvestris) forest (Hartheim, Germany), were carried out during the Hartheim Experiment (HartX), an intensive observation...
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Article
Estimates of water vapor flux and canopy conductance of Scots pine at the tree level utilizing different xylem sap flow methods
During the Hartheim Experiment (HartX) 1992 conducted in the upper Rhine Valley, Germany, three different methods were used to measure sap flow in Scots pine trees via heating of water transported in the xylem...
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Article
The HartX-synthesis: An experimental approach to water and carbon exchange of a Scots pine plantation
In May 1992 during the interdisciplinary measurement campaign HartX (Hartheim eXperiment), several independent estimates of stand water vapor flux were compared at a 12-m high Scots pine (Pinus silvestris) planta...
