1,721,032 research outputs found
Variability of fluxes of particulate material in a submarine cave with chemolithoautotrophic inputs of organic carbon
Full text linkSources and biochemical composition of suspended particulate material in a submarine cave with sulphur water springs
No full textSources, biochemical composition and nutritional value of suspended particulate material were investigated from February 1994 to February 1995 in a submarine cave (Grotta Azzurra, Cape Palinuro, southwestern Italy) with hot sulphur springs and associated mats of chemolithoautotrophic bacteria in its innermost dark part (Snow Hall). Concentrations of total suspended material (TSM), particulate inorganic material (PIM), organic carbon (POC), organic nitrogen (PEN), chlorophyll a (Chl a), phacopigments (Phaeo), carbohydrates (TCH), proteins (TPR) and lipids (TLI) were measured at four stations along an outside inside transect, in order to address whether the quantity and quality of suspended particles varied over time with increasing distance from the entrance of the cave and estimate the relative contribution of chemosynthesis versus photosynthesis in supplying POC to cave heterotrophs. The abundance and biochemical composition of suspended material available to filter-feeders varied ove..
Effects of sedimentation on subtidal macroalgal assemblages: an experimental study from a Mediterranean rocky shore
No full textStructure of a subtidal algal assemblage dominated by Polysiphonia setacea Hollenberg in Western Mediterranean
No full textSediment deposition and movement over a turf assemblage in a shallow rocky coastal area of the Ligurian Sea
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Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Interazioni competitive tra alghe incrostanti ed a feltro in un habitat infralitorale roccioso del litorale livornese
No full textSpatial and temporal variability of recruitment of Dictyota dichotoma (Hudson) Lamouroux
No full textA VHDL model and Implementation of a Coarse-Grain Reconfigurable Coprocessor for a RISC Core
No full textThis paper presents a coarse-grain reconfigurable machine used as a coprocessor to speed up the execution of computationally demanding tasks, which would be too heavy for a generic RISC core stand alone. A VHDL model of the proposed architecture has been created for simulation and implementation. Some common algorithms for signal processing and multimedia applications have been mapped over our design, to benchmark it and compare the results against another existing architecture. Synthesis results indicate that the area occupation and the operating frequency of our design are reasonable, guaranteeing the physical feasibility of our approach. The amount of clock cycles required to perform the considered algorithms on the proposed architecture is far smaller than the one needed by a RISC core alone running the same software, demonstrating the effectiveness of the proposed solution
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