Unit Gain Frequency
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. A High Gain Super Wideband Metamaterial Based Antenna
Abstract The paper proposes a high gain, metamaterial based super wideband (SWB) antenna. The SWB antenna has two inverted U slots which are responsible for two notches at 3.5 GHz and 5.5 GHz frequencies. A flower-shaped slot is etched from the radiator to obtain the SWB characteristics. The super wideband antenna has dimensions of 30×35 ×1.5 mm3 with FR4
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2021-06
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2. Combined index of genomic prediction methods applied to productivity
RESUMO: A cultura do arroz tem grande importância nacional e mundial por ser um dos cereais mais produzidos e consumidos no mundo, caracterizando-se como o principal alimento de mais da metade da população mundial. Em função de sua importância alimentar, desenvolver métodos eficientes que visam a predição e a seleção de indivíduos geneticamente
Cienc. Rural. Publicado em: 19/06/2019
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3. Dual-band X/Ku Reflectarray Antenna Using a Novel FSS-Backed Unit-Cell with Quasi-Spiral Phase Delay Line
Abstract A novel FSS-Backed reflectarray unit cell is introduced to design a dual-band X/Ku Reflectarray Antenna (RA). A Ku-band RA based on this FSS-Backed cell element is designed and located on the top of a conventional X-band RA. Actually, the band-stop Frequency Selective Surface (FSS) property is applied to a wideband element to create isolation betwee
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2016-09
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4. Análise dos parâmetros analógicos do dispositivo SOI DTMOS. / Analog performance of dynamic threshold voltage SOI MOSFET.
This work presents the study of analog performance parameters of PDSOI (Partially-depleted) transistor in comparison with a Dynamic Threshold MOS transistor (DTMOS). The DTMOS is a partially-depleted device with dynamic threshold voltage. This variation of threshold voltage is obtained when the gate is connected to the silicon film (channel) of the PDSOI dev
Publicado em: 2009
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5. Resfriamento do piso da maternidade para porcas em lactação no verão / Floor cooling in farrowing room to lactating sows in the summer
This study was realized to evaluate the effect of cooling the cage floor under the lactating sows on productive performance receiving different amounts of feed in the summer. Forty two sows with different parturition orders were used (1 to 5), distributed in three treatments (floor not cooled and free intake; floor cooled and 5,5 kg/day of intake; floor cool
Publicado em: 2008
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6. Microdosimetric studies using a filtered fast neutron irradiation system of research reactor to application in radiation biology / Estudos microdosimétricos usando um sistema de irradiação de nêutrons rápidos filtrados de reator de pesquisa para aplicação de radiobiologia
In this work, microdosimetric measurements were performed using a Wall-less Tissue Equivalent Proportional Counter - TEPC was filled with spherical cavity with an inner diameter of 1.27 cm. The TEPC was tilled with pure propane gas, C3H8 at 5.6 kPa (42 Torr) pressure, which is equi\\alent to 1.3μm in diameter of unit density tissue. The microdosimetric me
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/06/2007
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7. Behavior of piglets in function of the protein source in the diet after the weaning / Comportamento de leitões em função da fonte protéica na dieta e idade ao desmame
Two experiments were conduced, the first using 48 piglets, weaned to the 21 days of age, and with initial weight of 5,60 0,75 kg, distributed at random in three treatments and sixteen repetitions with an animal for experimental unit, with the objective of evaluating the behavior after the weaning fed with diets containing different protein sources. The treat
Publicado em: 2007
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8. Avaliação clinica e estudo eletromiografico dos musculos masseter e porção anterior do temporal em individuos portadores de disfunção temporomandibular / Clinical assessment and electromyographic study in masseter and anterior portion of temporal muscles in patients with temporomandibular disorder
Temporomandibular dysfunction (TMD) affects muscles and bones and is frequently associated with the presence of para-functional habits. Frequent signs and symptoms include limited mandibular movements, noise, masticatory and speaking difficulty, headaches, facial and cervical pain, and muscle pain in temporomandibular articulation (TMA). Pain is a common exp
Publicado em: 2007
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9. Spindle and motoneuronal contributions to the phase advance of the human stretch reflex and the reduction of tremor.
1. The human stretch reflex is known to produce a phase advance in the EMG reflexly evoked by sinusoidal stretching, after allowing for the phase lag introduced by simple conduction. Such phase advance counteracts the tendency to tremor introduced by the combined effect of the conduction delay and the slowness of muscle contraction. The present experiments c
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10. Basilar Membrane Responses to Noise at a Basal Site of the Chinchilla Cochlea: Quasi-Linear Filtering
Basilar membrane responses to clicks and to white noise were recorded using laser velocimetry at basal sites of the chinchilla cochlea with characteristic frequencies near 10 kHz. Responses to noise grew at compressive rates and their instantaneous frequencies decreased with increasing stimulus level. First-order Wiener kernels were computed by cross-correl
Springer-Verlag.
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11. Rapid resetting of rabbit aortic baroreceptors and reflex heart rate responses by directional changes in blood pressure.
In both anaesthetized and conscious rabbits, perivascular balloon inflations slowly raised or lowered mean arterial pressure (M.A.P.), at 1-2 mmHg/s, from resting to various plateau pressures. Deflations then returned the M.A.P. to resting. 'Steady-state' curves relating M.A.P. to unitary aortic baroreceptor firing, integrated aortic nerve activity and heart
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12. Selection of colony, plasmid, and virulence variants of Staphylococcus epidermidis NRC853 during growth in continuous cultures exposed to erythromycin.
A continuous-culture system was developed to study changes in the structure of Staphylococcus epidermidis populations exposed to subminimum inhibitory concentrations of erythromycin. Continuous-culture experiments were carried out in a dextrose-free, tryptic soy broth medium supplemented with lactic acid and sodium lactate (MTSB-D). The multiresistant (penic