Pin Hole
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Improvement of power efficiency of hybrid white OLEDs based on p-i-n structures
ABSTRACT In this article, hybrid white organic light-emitting diodes (WOLEDs) under p-i-n structures have been investigated in terms of power efficiency. By using tris(8-hydroxy quinolinato) aluminum (Alq3) doped with 8-hydroxy-quinolinato lithium (Liq) as an n-type and WHI112 doped with molybdenum trioxide (MoO3) as a p-type, the typical device structure of
Matéria (Rio J.). Publicado em: 05/03/2018
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2. Investigação da Difusão de Portadores em Pontos Quânticos Sob Campo Elétrico Externo Por Meio da Varredura da Microluminescência
In this work, we present the study of energy transfer processes between self-assembled quantum dots (QDs) of InAs in GaAs layers within an intrinsic region of a p-i-n device. These p-i-n structures are assembled with electrical contacts providing the application of an electrical potential. The three samples used have diferent layer spacing and barrier size b
Publicado em: 2009
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3. Perfil morfofuncional de pacientes com retinopatia diabética som baixa acuidade visual severa em hospital público de referência em diabetes no Brasil
Objective: To demonstrate the morpho-functional profile of the evaluation of patients with diabetic retinopathy without low severe visual acuity in a public hospital of reference in endocrinology, determining in this sample, the relation between the time of diabetes, age and visual acuity with the retinal thickness measured by the optical Coherence tomograph
Publicado em: 2008
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4. Avaliação da susceptibilidade de solos gnaissicos à erosão subsuperficial
As áreas com rochas do embasamento cristalino da bacia do rio Maracujá apresentam grande incidência de voçorocas de grandes dimensões. O presente trabalho objetivou investigar a influência dos processos erosivos subsuperficiais na evolução destas formas de erosão, além de compreender quais os fatores mineralógicos e texturais que poderiam influenc
Sociedade & Natureza. Publicado em: 2007-12
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5. Education and photograph contributions to the perception of ambient problems / Educação e fotografia contribuições à percepção de problemas ambientais
This research aims to contribute to the production of knowledge on educational processes directed to the understanding of the social-enviroment problems and increase the performance of natural systems protection and improvement of life quality.The study is on the ambient degradation and the youth alienation in relation to the conditions of its environments -
Publicado em: 2004
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6. Neutron anisotropy and X-ray production of the FN-II dense plasma focus device
The FN-II Dense Plasma Focus is a small (< 5kJ ) Mather type device, where the dependence of neutron yield and its anisotropy, in terms of deuterium filling pressure, and the neutron emission angular distribution have been studied. Two diferent electrode configurations have been tested, showing that their geometry plays an important role both on neutron yiel
Brazilian Journal of Physics. Publicado em: 2002-03
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7. X-ray and neutron emission studies in a new Filippov type plasma focus
We have performed experimental comparative studies of the x-ray and neutron emission generated by the new Filippov-type plasma focus "Dena", (90 kJ, 25 kV, 288muF) in the pressure range of 0.6-1 torr. Time-integrated and time-resolved detectors, together with an x-ray pin-hole camera, along with a Be filter of 10mum thickness have been used. For a working ga
Brazilian Journal of Physics. Publicado em: 2002-03
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8. Pin-Hole Array Correlation Imaging: Highly Parallel Fluorescence Correlation Spectroscopy
In this work, we describe pin-hole array correlation imaging, a multipoint version of fluorescence correlation spectroscopy, based upon a stationary Nipkow disk and a high-speed electron multiplying charged coupled detector. We characterize the system and test its performance on a variety of samples, including 40 nm colloids, a fluorescent protein complex, a
The Biophysical Society.
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9. Study of electrical characterization of 2-methyl-9, 10-di(2-naphthyl)anthracene doped with tungsten oxide as hole-transport layer
An efficient p-doped transport layer composed of an ambipolar material, 2-methyl-9,10-di(2-naphthyl)anthracene (MADN) and tungsten oxide (WO3) has been developed. The admittance spectroscopy studies show that the incorporation of WO3 into MADN can greatly improve the hole injection and the conductivity of the device. Moreover, when this p-doped layer was inc
American Institute of Physics.
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10. Importance of right ventricular outflow tract angiography in distinguishing critical pulmonary stenosis from pulmonary atresia.
OBJECTIVE: To investigate the spectrum of pulmonary atresia and critical pulmonary stenosis using right ventricular outflow tract angiography and explore its implications for catheter interventional treatment. DESIGN: Prospective clinical study. SETTING: Two paediatric cardiology centres. SUBJECTS: 11 neonates or infants (aged 1 day to 8 months; weighing 2.3