RESUMO
We report a novel class of transmission electron microscope (TEM), the difference-contrast electron microscope (DTEM), which displays nanostructures of thin specimen objects in a topographical manner. Topography obtained by the difference-contrast develops shadowgraphs in pseudo three-dimension, namely volume-like representation of projected objects as if things are illuminated by light from one direction. The specific optical device tomanipulate electron waves for DTEM is the hemicircular π phase-plate, which appears to be quite distinguishable from the Zernike phase plate utilized in Zernike phase-contrast TEM, while both have to be placed onto the back-focal plane of the objective lens. The topographic images obtained with DTEM for ultrathin sections of kidney cells were compared with those obtained with conventional TEM. DTEM confirmed the experimental advantage of high contrast topography by visualizing ultrastructural details inside the cells.
RESUMO
The aims of this study were to investigate the lateralization hypothesis of schizophrenia, comparing chronic schizophrenics with unilateral brain-damaged subjects and normal controls, using attentional tests sensitive to the unilateral brain damage. Three attentional tests with different modes of stimuli, two vigilance tasks that require the self-paced or nonself-paced responses of subjects and one divided attention task, were administered to 28 chronic schizophrenics, 26 right and 24 left unilateral brain-damaged subjects, and 20 normal controls. The results indicated that schizophrenics performed a possible right-hemisphere damages pattern and also a left pattern in part, with failure of all tasks to show either pattern related to a number of differences between the three tasks. Furthermore, the attention deficits of schizophrenics are less than those of brain-damaged subjects but are clearly abnormal compared with the normal controls.
Assuntos
Atenção , Dano Encefálico Crônico/diagnóstico , Lateralidade Funcional , Testes Neuropsicológicos , Esquizofrenia/diagnóstico , Doença Crônica , Transtornos Cognitivos/diagnóstico , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Psicologia do EsquizofrênicoRESUMO
A wireless axial pair resonator consists of two coils coupling inductively with a body coil, which is used as a signal transmitter and receiver. Computer simulations gave signal enhancements of 1.41 and 1.47 for the resonators of 15- and 20-cm diameter, whereas those of phantom studies gave 1.37 and 1.49.
Assuntos
Simulação por Computador , Imageamento por Ressonância Magnética/métodos , Humanos , Aumento da Imagem/métodos , Imageamento por Ressonância Magnética/instrumentação , Modelos EstruturaisAssuntos
Relações Enfermeiro-Paciente , Atitude , Humanos , Comunicação não Verbal , Comportamento VerbalAssuntos
Humanos , Feminino , Maprotilina , Disfunções Sexuais Psicogênicas , Método Duplo-Cego , PlacebosAssuntos
Adolescente , Adulto , Humanos , Masculino , Feminino , Ansiedade , Benzodiazepinonas , Nomifensina , Disfunções Sexuais FisiológicasRESUMO
Apresenta-se programa para reabilitacao da paciente mastectomizada. Foi ele adaptado as condicoes do Hospital das Clinicas da Faculdade de Medicina da Universidade de Sao Paulo, porque a maioria dos usuarios e de baixo estado socio-economico e cultural. Esse programa tem por objetivo alcancar a recuperacao fisica, o reajuste psicossocial e a retomada das atividades domesticas da enferma, o que exigiu a criacao de uma equipe multidisciplinar, formada por medicos, assistentes-sociais, psicologas e enfermeiras. A aplicacao completa do programa varia de caso para caso, em media demorando 8 semanas apos a alta hospitalar