Cristian Segura

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In this paper, an automatic system to locate frontispieces in ancient scores is presented. The system is able to identify images containing two pages and separate them. Then, the algorithm performs a correction of the rotation. The next step is to delimit the area of interest which will be used along the next steps. After that, a mask containing the shape(More)
This study describes the physiological performance of two populations of the razor clam Tagelus dombeii from two geographic areas with different histories of exposure to paralytic shellfish poisoning (PSP) linked to the toxic dinoflagellate Alexandrium catenella. Clams from Melinka-Aysén, which are frequently exposed to PSP, were not affected by the(More)
Organisms that encounter stressful situations in nature often cope using behavioral (e.g., avoidance) or physiological tactics. In sessile mollusks, the only available behavioral option in dealing with salinity stress is to “clam up”, isolating their tissues from the environment. Though effective in the short term, prolonged isolation can have detrimental(More)
The estuarine slipper limpet Crepipatella dilatata is a gastropod that can survive prolonged periods of low salinities (< 24 PSU) caused by tidal changes and/or prolonged periods of rain. During low salinity events, C. dilatata can isolate its body from the outside environment, by sealing its shell against the substrate on which it grows. Prolonged(More)
Because the physical and mechanical properties of vital and devitalized teeth differ, a variety of complexities can occur during the reconstruction of endodontically treated teeth. The three products described are recommended to help overcome some of the shortcomings encountered in present-day rehabilitation.
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