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| Registros recuperados: 127 | |
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| Nouze, Herve; Henry, P; Noble, M; Martin, V; Pascal, G. |
| Previous studies have revealed the presence of a widespread Bottom Simulating Reflector (BSR) on the eastern Nankai slope, as well as the occurrence of enigmatic high amplitude reflections that extend well above the BSR. New high-resolution 2-D seismic data were collected on the eastern Nankai slope, during the French-Japanese SFJ cruise in year 2000 and AVA analyses of the enigmatic reflectors are conducted. At the studied location, these analyses suggest that high amplitude anomalies above the BSR delineate the top of gas hydrate rich sediments. Several tens % of the sediment porosity would be filled with gas hydrates between the BSR and a sharp boundary 30 to 60 m above. To account for these observations, we propose that an invasion by free gas of the... |
| Tipo: Text |
Palavras-chave: Zone; Model; Ridge; Methane gas; Marine sediments. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/publication-510.pdf |
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| Lassus, Patrick; Amzil, Zouher; Baron, Regis; Sechet, Veronique; Barille, Laurent; Abadie, Eric; Bardouil, Michele; Sibat, Manoella; Truquet, Philippe; Berard, Jean-baptiste; Gueguen, Marielle. |
| In October and November 2003 a bloom of the toxic dinoflagellate Alexandrium catenella was observed in the North-east zone of Thau lagoon (French Mediterranean coast). Sea water samples were collected every hours to evaluate time-related variations of phytoplankton concentrations and to compare the relative ratio of A. catenella versus other phytoplankton species during the outbreak. From these observations, trials using recirculated sea water systems were performed to: i) evaluate the physiological effects on oyster of increasing proportions of A. catenella within a mixed microalgal diet where the non-toxic diatom Thalassiosira weissflogii was present at concentration: 1500 cells ml(-1), ii) compare the effect of two temperatures (12 degrees C and 18... |
| Tipo: Text |
Palavras-chave: Mediterranean Sea; Alexandrium catenella; Toxin content; Model; Crassostrea gigas; Paralytic shellfish poisoning. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2624.pdf |
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| Hammen, L. van der. |
| The present paper constitutes an introduction to taxonomic methodology. After an analysis of taxonomic practice, and a brief survey of kinds of attributes, the paper deals with observation, description, comparison, arrangement and classification, hypothesis construction, deduction, model, experiment, abstraction, and synthesis. The methodological aspects of the species-concept and of biological classification are dealt with in two final sections. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Abstraction; Classification; Comparison; Deduction; Description; Experiment; Hypothesis; Methodology; Model; Observation; Species-concept; Synthesis; Systematics; Taxonomy; 42.03; 42.70. |
| Ano: 1986 |
URL: http://www.repository.naturalis.nl/record/318283 |
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| Mahmoud, M.A.; Ammar, M.S.A.. |
| A novel and cheep approach for building artificial reefs was designed in such a way that sediments in an area of high sedimentation rate will be utilized in building the artificial substrate with no further sediment accumulation afterwards. The model consists of several steel cylinders which are soldered together in such a way to form a reef flat, a gentle slope and a steep slope, with two layers of narrow opening meshes (a lower plastic and an upper metallic one). Within a short periode (3 months), a substrate layer of a total of ~ 1 cm was formed between the two meshes, this layer increased to ~2 cm after 9 months. Transplants of the three species Stylophora pistillata, Echinopora gemmacea and Montipora spongiosa grow better when the attaching surface is... |
| Tipo: Journal Contribution |
Palavras-chave: Coral reefs; Artificial coral reefs; Transplantation; Substrate; Model; Sedimentation Sediment transport Artificial reefs. |
| Ano: 2005 |
URL: http://hdl.handle.net/1834/1298 |
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| Meysman, F.. |
| Within the natural sciences, it has long been recognized that biological activity can modify the texture, structure and composition of surface sediments. Darwin (1881) already examined the stirring of soils by burrowing earthworms and made detailed observations on how these organisms affect soil processes. A similar phenomenon can be observed in aquatic sediments, which are inhabited by a diverse biological community, supported by the flux of organic matter and oxygen from the overlying water column. Surface sediments of oceans, estuaries, lakes and rivers are highly active biogeochemical environments and an effective way to generate insight in the complexity of the interactions is by means of so-called general early diagenetic models (e.g. Soetaert et al,... |
| Tipo: Info:eu-repo/semantics/doctoralThesis |
Palavras-chave: Chemistry; Ecology; Hydrology; Model; Sediment; Water. |
| Ano: 2001 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=8063 |
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| Silva, Helton Damin da; Ferreira, Carlos Alberto; Corrêa, Robson Schaff; Bellote, Antonio Francisco Jurado; Tussolini, Elson Luiz. |
| This paper presents the results of the adjustment of equations for estimating biomass of aerial compartments of Eucalyptus benthamii trees. The percentile allocation of biomass, in the compartments wood, bark, leaves and branches is also presented. The trees of Eucalyptus benthamii were sampled from stands of 12, 24, 36 and 48 months of age, planted at the spacing 3 m x 2 m, in the region of Guarapuava-PR. For the compartments considered, the generalized logarithmic model gave better indices of adjustment for branches and, together with logarithmic combined variable, the minor error for bark variable. Leaves and wood had minor error with model lnY=b0 +b1*lnDBH and logarithmic combined variable, respectively. The allocation of biomass in the different... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Age; Model; Variable Idade; Modelos; Variável. |
| Ano: 2004 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1588 |
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| Langley, Suchada V.; Blayney, Donald P.; Stout, Jim; Somwaru, Agapi; Normile, Mary Anne; Miller, James J.; Stillman, Richard. |
| International dairy industries remain among the most distorted agricultural sectors. Dairy average bound tariffs remain among the highest of all agricultural commodities, and dairy trade is characterized by a large number of megatariffs and tariff-rate quotas (TRQs). The objective of our study is to examine how the international dairy markets might respond to policy changes under various assumptions, using a partial equilibrium, multiple-commodity, multiple-region model of agricultural policy and trade. Our results indicate that liberalization will reduce supplies, increase dairy trade, and raise world prices. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Dairy Markets; Trade Liberalization; Model; Policy; International Relations/Trade. |
| Ano: 2003 |
URL: http://purl.umn.edu/21997 |
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| Muncan, Mihajlo. |
| The full use of resource capacities of agricultural enterprises favorably affects the general increase in economic efficiency and rational production making them more competitive in the market. This creates the need for constant improvement of business strategies that uses all available resources to create the most profitable production. The main objective of this study was to find the ideal structure of production in agricultural enterprise and to enable the realization of maximum profit using the available production resources (land, mechanization, labor forces). As the basic method of planning, this study used the simplex method of linear programming which gives the most profitable sowing structure after detailed analysis of resources and achieved... |
| Tipo: Thesis or Dissertation |
Palavras-chave: Model; Agricultural enterprises; Resources; Profit; Crop Production/Industries; Research Methods/ Statistical Methods. |
| Ano: 2010 |
URL: http://purl.umn.edu/91118 |
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| Yu, Yun-bo; Yu, Lin. |
| Firstly, the paper establishes a brand-extension size model and adopts the marginal analysis to analyze the optimal solution of it. Secondly, research the brand-extension condition of G brand by questionnaire survey. There are 240 questionnaires handed out, with 211 withdrawing and 187 valid, by doing this to test the influencing degree of each factor in brand-extension size model; At the same time, use analytic hierarchy process to analyze the size of brand extension and principal component analysis to find out the main factors that influence brand extension of G brand. Finally, the paper makes an empirical analysis on brand extension size model based on ecological characteristics, the results show that the order of the total information reflected by each... |
| Tipo: Journal Article |
Palavras-chave: Model; Size; Demonstration; Brand extension; Ecological characteristics; China; Agribusiness. |
| Ano: 2009 |
URL: http://purl.umn.edu/93462 |
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| Rafajlovic, Juanita; Cardwell, Ryan T.. |
| Current Doha Development Agenda (DDA) World Trade Organisation negotiations include proposals that would affect the trade barriers that protect Canada’s chicken producers from foreign competition. This research analyses the effects of the most recent proposals to emerge from the DDA negotiation on Canada’s chicken industry. We develop a partial-equilibrium model that generates welfare effects for the Canadian chicken industry supply chain. We also introduce stochastic prices to evaluate the effects of world price instability on the Canadian chicken industry. The model is also adapted to represent chicken as two distinct products; white meat and dark meat. Simulation results suggest that the welfare effects of the DDA proposals on the Canadian chicken... |
| Tipo: Report |
Palavras-chave: WTO; Chicken; Canada; Model; Trade; Agricultural and Food Policy; Demand and Price Analysis; International Relations/Trade. |
| Ano: 2010 |
URL: http://purl.umn.edu/95814 |
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| Yu, Yang. |
| Concept of rural elite in China is introduced. And rural elites are classified into governing elite, economic elite, social elite and cultural elite with phenomenon of overlapping among the four types. Definitions of science nationalization and elite politicalization are introduced. Based on the review of previous research results, meaning of elite nationalization is defined: the state guides elites to join in its operation by means of controlling the elites’ occupation, promoting their status, improving their warfare, assimilating their thought and so on, so that elites may serve the political objectives of the state. Predicaments of rural elites are analyzed. Firstly, some rural governing elites and economic elites are high combined, or they use each... |
| Tipo: Thesis or Dissertation |
Palavras-chave: Rural elites in China; Nationalization of elites; Necessity; Model; Labor and Human Capital. |
| Ano: 2009 |
URL: http://purl.umn.edu/54035 |
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| Parnell, Peter F.; Clark, Richard A.; Timms, Janice. |
| The purpose of the Project System Improvement and Innovation Strategy is to ensure regular and frequent improvement and innovation of the design, leadership and performance of the project system and its component elements, and to manage the interaction between the project system and the broader meta-system. The importance of this strategy has become more apparent over the past year. Initially it was treated as a 'supporting' strategy, but with time, recognition of its importance is growing. This strategy will require greater ingenuity and attention over the next two years to ensure project success, efficiency and sustainability. |
| Tipo: Article |
Palavras-chave: Sustainable improvement and innovation; Model; System; Strategy; Farm Management. |
| Ano: 2008 |
URL: http://purl.umn.edu/121991 |
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| Muncan, Mihajlo. |
| The full use of resource capacities of agricultural enterprises favorably affects the general increase in economic efficiency and rational production making them more competitive in the market. This creates the need for constant improvement of business strategies that uses all available resources to create the most profitable production. The main objective of this study was to find the ideal structure of production in agricultural enterprise and to enable the realization of maximum profit using the available production resources (land, mechanization, labor forces). As the basic method of planning, this study used the simplex method of linear programming which gives the most profitable sowing structure after detailed analysis of resources and achieved... |
| Tipo: Journal Article |
Palavras-chave: Model; Agricultural enterprises; Resources; Profit; Agribusiness. |
| Ano: 2011 |
URL: http://purl.umn.edu/104681 |
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| Registros recuperados: 127 | |
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