282 research outputs found
Suspected viral erythrocytic necrosis (VEN) in the intertidal fish Mauligobius maderensis from Madeira, Portugal
Suspected viral erythrocytic necrosis (VEN) was detected in two specimens of the
intertidal fish Mauligobius maderensis (Teleostei: Gobiidae) from Madeira, Portugal. While
one host was lightly infected, the other showed intraerythrocytic cytoplasmic inclusions
within all mature erythrocytes examined. The inclusions were round to oval, 0-8-2-0 |im in
diameter, and most were associated with dense eosinophilic granular areas of various
sizes and shapes. Up to three of these granular regions accompanied each inclusion body,
but they were sometimes widely separated from it. In a number of infected erythrocytes,
a granular halo was observed surrounding the nucleus. The cytoplasm enclosed by the
halo often had a different refringence from that outside. None of the 120 other fishes
examined from Madeira, representing 43 species of intertidal, pelagic, and deep-sea
origin, had detectable infections.info:eu-repo/semantics/publishedVersio
Trypanosoma nupelianus sp. n. (Protozoa, Kinetoplastida) parasitizing rhinelepis aspera (Osteichthyes, Loricariidae) from Paraná river, Brazil
Trypanosoma guairaensis sp. n. (Protozoa, Kinetoplastida) parasita de megaloancistrus aculeatus (Perugia, 1891) (Pisces, Loricariidae)
Infection of Oxydoras kneri Bleecker, 1862 (Pisces, Doradidae) by the acanthocephalan Paracavisoma impudica (Diesing, 1851) Kritcher, 1957
The monoclinic phase of PZT ceramics: Raman and phenomenological theory studies
This work reports on the first Raman detection of the tetragonal to
monoclinic phase transition in PZT ceramics near morphotropic phase boundary at
low temperatures. The transition is characterized by changes in the frequency
of lattice modes with the temperature. The results presented here confirm the
previous one recently reported by Noheda et al. using high-resolution
synchrotron X-ray powder diffraction technique and dielectric measurements. The
stability of the new phase is discussed within the framework of
phenomenological Landau-Devonshire Theory.Comment: 6 pages including 4 figures, Latex, submitted to Applied Physics
Letter
- …