排序方式： 共有14条查询结果，搜索用时 281 毫秒
1.
2.
Eugénie Lisitzin 《Pure and Applied Geophysics》1958,40(1):120-126
Résumé Dans l'article est examinée la question de l'analogie du niveau moyen mensuel de la mer pour un nombre de stations marégraphiques sur les côtes italiennes ct françaises de la Méditerranean. On peut constater que la variation de la quantité de l'eau dans la mer est le facteur principal à ce rapport, mais qu'on doit aussi tenir compte de la distance reciproque entre les stations, de l'influence de la force de Coriolis et de l'effet des éléments météorologiques.
Summary In the paper it is studied the question of the analogy between the average monthly sea-levels for a few tide gauge stations on the Italian and French coasts of the Mediterranean. It could be established that the variation of the water amount in the sea is the principal factor in this regard, but that the distance between the stations, the influence of the Coriolis force and the effect of meteorological elements must be considered, too.相似文献
3.
4.
Sander Wijnhoven Vincent Escaravage Eugène Daemen Herman Hummel 《Estuaries and Coasts》2010,33(6):1261-1278
The former tidal inlet Lake Veere was turned into a stagnant brackish lake in 1961. Ever since, the system has shown a continuous
degradation. The current study shows the monitoring results for the macrozoobenthic communities and the abiotic conditions
for the period 1990–2008. This includes the first step to remediation, the restoration of the exchange between the tidal marine
Eastern Scheldt and Lake Veere in 2004. A continuous decline in water clearance co-occurring with decreasing macrofauna densities
and richness was observed till 2004. Water quality (e.g., secchi depth, nutrient levels, and oxygen conditions) improved significantly
after the measure at a higher salinity level with less variation. But the macrofauna densities, biomass, and diversity did
not improve yet. First indications of changes in the benthic communities by arrival of new and returning species are however
observed and show that restoration at macrofauna level follows the improved abiotic conditions with a delay of several years. 相似文献
5.
Suzan Pantaroto de Vasconcellos Elaine Crespim Georgiana Feitosa da Cruz Diego Barbosa Senatore Karen Christina Marques Simioni Eugênio Vaz dos Santos Neto Anita Jocelyne Marsaioli Valéria Maia de Oliveira 《Organic Geochemistry》2009,40(5):574-588
The detection of microorganisms with potential for biodeterioration and biodegradation in petroleum fields is of great relevance, since these organisms may be related to a decrease in petroleum quality in the reservoirs or damage in the production facilities. In this sense, petroleum formation water and oil samples were collected from the Campos Basin, Brazil, with the aim of isolating microorganisms and evaluating their ability to degrade distinct classes of hydrocarbon biomarkers (9,10-dihydrophenanthrene, phytane, nonadecanoic acid and 5α-cholestane). Twenty eight bacterial isolates were recovered and identified by sequencing their 16S rRNA genes. Biodegradation assays revealed that bacterial metabolism of hydrocarbons occurred through reactions based on oxidation, carbon–carbon bond cleavage and generation of new bonds or by the physical incorporation of hydrocarbons into microbial cell walls. Based on the biodegradation results, selective PCR-based systems were developed for direct detection in petroleum samples of bacterial groups of interest, namely Bacillus spp., Micrococcus spp., Achromobacter xylosoxidans, Dietzia spp. and Bacillus pumilus. Primer sets targeting 16S rRNA genes were designed and their specificity was confirmed in silico (i.e. computational analysis) and in PCR reactions using DNA from reference strains as positive and negative controls. Total DNA from oil was purified and the amplification tests revealed the presence of the target bacteria in the samples, unraveling a significant potential for petroleum deterioration in the reservoirs sampled, once proper conditions are present for hydrocarbon degradation. The application of molecular methods for rapid detection of specific microorganisms in environmental samples would be valuable as a supporting tool for the evaluation of oil quality in production reservoirs. 相似文献
6.
Geoenvironmental site investigation using different techniques in a municipal solid waste disposal site in Brazil 总被引：3，自引：0，他引：3
Giulliana Mondelli Heraldo Luiz Giacheti Maria Eugênia Gimenez Boscov Vagner Roberto Elis Jorge Hamada 《Environmental Geology》2007,52(5):871-887
Different geoenvironmental site investigation techniques to assess contamination from a municipal solid waste disposal site
in Brazil are presented here. Superficial geophysical investigation (geoelectrical survey), resistivity piezocone penetration
tests (RCPTU), soil samples collected with direct-push samplers and water samples collected from monitoring wells were applied
in this study. The application of the geoelectrical method was indispensable to identify the presence and flow direction of
contamination plumes (leachate) as well as to indicate the most suitable locations for RCPTU tests and soil and water sampling.
Chemical analyses of groundwater samples contributed to a better understanding of the flow of the contaminated plume. The
piezocone presented some limitations for tropical soils, since the groundwater level is sometimes deeper than the layer which
is impenetrable to the cone, and the soil genesis and unsaturated conditions affect soil behavior. The combined interpretation
of geoelectrical measurements and soil and water samplings underpinned the interpretation of RCPTU tests. The interpretation
of all the test results indicates that the contamination plume has already overreached the landfill’s west-northwest borders.
Geoenvironmental laboratory test results suggest that contamination from the solid waste disposal site has been developing
gradually, indicating the need for continuous monitoring of the groundwater. 相似文献
7.
Marc Peipoch Esperança Gacia Alba Blesa Miquel Ribot Joan L. Riera Eugènia Martí 《Aquatic Sciences - Research Across Boundaries》2014,76(2):203-215
We examined the relevance of dissolved inorganic nitrogen (DIN) forms (nitrate and ammonium) in stream water as N sources for different macrophyte species. To do this, we investigated the variability and relationships between 15N natural abundance of DIN forms and of four different macrophyte species in five different streams influenced by inputs from wastewater treatment plants and over time within one of these streams. Results showed that 15N signatures were similar in species of submersed and amphibious macrophytes and in stream water DIN, whereas 15N signatures of the riparian species were not. 15N signatures of macrophytes were generally closer to 15N signatures of nitrate, regardless of the species considered. Our results showed significant relationships between 15N signatures of DIN and those of submersed Callitriche stagnalis and amphibious Veronica beccabunga and Apium nodiflorum, suggesting stream water DIN as a relevant N source for these two functional groups. Moreover, results from a mixing model suggested that stream water DIN taken up by the submersed and amphibious species was mostly in the form of nitrate. Together, these results suggest different contribution to in-stream N uptake among the spatially-segregated species of macrophytes. While submersed and amphibious species can contribute to in-stream N uptake by assimilation of DIN, macrophyte species located at stream channel edges do not seem to rely on stream water DIN as an N source. Ultimately, these results add a functional dimension to the current use of macrophytes for the restoration of stream channel morphology, indicating that they can also contribute to reduce excess DIN in streams. 相似文献
8.
9.
Eugénie Joltreau 《Climate Policy》2019,19(4):453-471
Environmental policies may have important consequences for firms’ competitiveness or profitability. For the European Union Emissions Trading System (EU ETS) the empirical literature documents that significant emissions reductions have resulted from it. Surprisingly, however, the literature shows that there have been hardly any concurrent negative effects on firms’ competitiveness during the first two phases of the scheme (2005–2012). We show that the main explanations for the absence of negative impacts on competitiveness are a large over-allocation of emissions allowances leading to a price drop and the ability of firms to pass costs onto consumers in some sectors. Cost pass-through combined with free allocation, in turn, partly generated windfall profits. In addition, the relatively low importance of energy costs indicated by their average share in the budgets of most manufacturing industries may have limited the impact of the EU ETS. Finally, small but significant stimulating effects on innovation have been found so far. Several factors suggest that over-allocation is likely to remain substantial in the upcoming periods of the scheme. Therefore, we expect to see no negative competitiveness effects from the EU ETS in Phases III and IV (2013–2030).
Key policy insights
Empirical literature on the EU ETS shows that there have been hardly any effects on firms’ competitiveness or profitability.
One main explanation is a large over-allocation of emissions allowances leading to a price drop. This reduced incentives for innovation.
Moreover, firms were able to pass costs on to consumers in some sectors which partly generated windfall profits.
Innovation effects have so far been small but positive.
We expect to see no negative competitiveness effects on regulated firms in the near future suggesting that no further reliefs for regulated firms are required.
10.
Eugène J. L. Dietvorst 《International Journal of Earth Sciences》1982,71(1):245-262
The metamorphism of the Svecofennides in southwestern Finland has been studied in pelitic gneisses from the Kemiö region. Three metamorphic zones have been distinguished which are characterized, in order of increasing grade, by the parageneses muscovite + quartz, biotite + sillimanite + K feldspar, and cordierite + K feldspar. Temperature and load pressure estimates of metamorphism range from 560±25° C, 3±0.5 kb for the upper boundary of the muscovite + quartz zone to 670±25° C, 4±0.5 kb for the cordierite + K feldspar zone at a partial water pressure of 0.4±0.1 Ptotal
Postmetamorphic tectonic activity has formed major fault or shear zones along which pegmatitic and granitic intrusive bodies have been emplaced. It is inferred that at least part of the zone boundaries represent tectonic contacts rather than isograds.
Zusammenfassung Die Metamorphose der Svecofenniden in Südwest-Finnland ist an pelitischen Gneissen des Kemiö-Gebietes untersucht worden. Drei metamorphe Zonen lassen sich unterscheiden mit zunehmendem Grad der Metamorphose, mit den Paragenesen Muskovit + Quarz, Biotit + Sillimanit + K Feldspat und Cordierit + K Feldspat. Abschätzungen der Temperatur und des Gebirgsdruckes der Metamorphose reichen von 560±25° C, 3±0.5 kb für die Obergrenze der Muskovit + Quarz-Zone bis zu 670±25° C, 4±0.5 kb für die Cordierit + K Feldspat-Zone bei einem Wasserdruck von 0.4±0.1 Ptotal Postmetamorphe tektonische Bewegungen haben mächtige Verschiebungen und Scherzonen zur Folge gehabt, entlang derer sich pegmatitische und granitische Intrusifkörper eingeschaltet haben. Deshalb wird angenommen, daß die Zonengrenzen wenigstens zum Teil tektonischer Kontakte repräsentieren und nicht Isograden.
Resume Le métamorphisme des Svecofennides du Sud Ouest de la Finlande a été étudié dans des gneiss pélitiques de la région de Kemiö. Trois zones métamorphiques ont été distinguées, caractérisées, par ordre de dégré croissant de métamorphisme, par les paragenèses suivantes: muscovite+quartz, biotite+sillimanite+K feldspath, et cordiérite + K feldspath. Les estimations de température et de pression lithostatique du métamorphisme vont de 560±25° C, 3±0.5 kb pour la limite supérieure de la zone à quartz + muscovite à 670±25° C, 4±0.5 kb pour la zone à cordiérite + K feldspath à une pression partielle d'H2O de 0,4 Ptotal.Une activité tectonique postmétamorphique a formé des failles majeures ou des zones de cisaillement le long desquelles se sont mis en place des pegmatites et des corps granitiques. On suppose que certaines parties des limites de zones au moins représentent des contacts tectoniques plutôt que des isogrades.
Kemiö . , - — , - - . 560±25°, 3±0,5 - 670±25 °, 4±0,5 - 0,4±0,1 .- , . , - , , .相似文献