Infestación experimental de Cernuella (Xeromagna) cespitum arigonis (Mollusca) por Dicrocoelium dendriticum (Trematoda)

1 página.-- Trabajo presentado a la X Reunión anual de la Asociación de Parasitólogos Españoles ( Sitges, Barcelona, 23 al 24 de septiembre, 1994).Para contribuir al entendimiento de los datos obtenidos en la naturaleza, sobre la transmisión parasitaria de Dicrocoelium dendriticum (Rudolphi, 1819) en los moluscos primeros hospedadores intermediarios, se siguió el desarrollo experimental del parásito en Cernuella (Xeromagna) cespitum arigonis (Schmidt, 1853), especie importante en la epidemiología de la dicroceliosis...Estudio financiado por la Junta de Castilla y León Proyecto n° 0701/89 por la CICYT Proyecto n° AGF92-0588.Peer reviewe

Pollen classification based on geometrical, descriptors and colour features using decorrelation stretching method

Abstract. Saving earth's biodiversity for future generations is an important global task, where automatic recognition of pollen species by means of computer vision represents a highly prioritized issue. This work focuses on analysis and classification stages. A combination of geometrical measures, Fourier descriptors of morphological details using Discrete Cosine Transform (DCT) in order to select their most significant values, and colour information over decorrelated stretched images are proposed as pollen grains discriminative features. A MultiLayer neural network was used as classifier applying scores fusion techniques. 17 tropical honey plant species have been classified achieving a mean of 96.49% 1.16 of success

Symptomatic subsegmental versus more central pulmonary embolism: Clinical outcomes during anticoagulation

Background: The optimal therapy of patients with acute subsegmental pulmonary embolism (PE) is controversial. Methods: We used the RIETE (Registro Informatizado Enfermedad TromboEmb\uf3lica) database to compare the rate of symptomatic PE recurrences during anticoagulation in patients with subsegmental, segmental, or more central PEs. Results: Among 15 963 patients with a first episode of symptomatic PE, 834 (5.2%) had subsegmental PE, 3797 (24%) segmental, and 11 332 (71%) more central PE. Most patients in all subgroups received initial therapy with low-molecular-weight heparin, and then most switched to vitamin K antagonists. Median duration of therapy was 179, 185, and 204 days, respectively. During anticoagulation, 183 patients developed PE recurrences, 131 developed deep vein thrombosis (DVT), 543 bled, and 1718 died (fatal PE, 135). The rate of PE recurrences was twofold higher in patients with subsegmental PE than in those with segmental (hazard ratio [HR], 2.13; 95% confidence interval [CI], 1.16-3.85) or more central PE (HR, 1.89; 95% CI, 1.12-3.13). On multivariable analysis, patients with subsegmental PE had a higher risk for PE recurrences than those with central PE (adjusted HR, 1.75; 95% CI, 1.02-3.03). After stratifying patients with subsegmental PE according to ultrasound imaging in the lower limbs, the rate of PE recurrences was similar in patients with DVT, in patients without DVT, and in those with no ultrasound imaging. Conclusions: Our study reveals that the risk for PE recurrences in patients with segmental PE is not lower than in those with more central PE, thus suggesting that the risk of PE recurrences is not influenced by the anatomic location of PE