Frequency Multiplication
Mostrando 1-12 de 40 artigos, teses e dissertações.
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1. In vitro adventitious shoot regeneration from leaf explants of some apricot cultivars
RESUMO O damasco é considerado uma das frutas mais valiosas comercialmente. A propagação in vitro de damasco é muito importante para a multiplicação de cultivares com características desejáveis, saudáveis e livres de vírus. O fator limitante para a propagação por métodos convencionais é a baixa frequência na multiplicação. Nesse contexto, o
Ciênc. agrotec.. Publicado em: 03/06/2019
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2. Influence of Benzyladenine and Thidiazuron on Shoot Regeneration from Leaf and Shoot tip Explants of Sedum sarmentosum Bunge
Effects of N6-benzyladenine (BA) or thidiazuron (TDZ) on adventitious shoot regeneration and axillary shoot multiplication of Sedum sarmentosum was investigated. Leaf and shoot tip explants obtained from in vitro-grown shoots of S. sarmentosum were cultured on Murashige and Skoog (MS) medium supplemented with 0, 2.0, 4.0 or 8.0 µM BA or TDZ. Of the two cyto
Braz. arch. biol. technol.. Publicado em: 06/05/2016
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3. In vitro callus induction and micropropagation of Thymus persicus (Lamiaceae), an endangered medicinal plant
Abstract This is the first attempt towards an efficient regeneration protocol for an endangered and valuable medicinal plant, Thymus persicus using in vitro callus induction and indirect organogenesis. Callus induction was performed on MS medium supplemented with different concentrations of NAA and 2,4-D, alone or in combination with BAP and KN. Maximum cal
Crop Breed. Appl. Biotechnol.. Publicado em: 2016-03
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4. A simple approach to calculate active power of electrosurgical units
Abstract Introduction: Despite of more than a hundred years of electrosurgery, only a few electrosurgical equipment manufacturers have developed methods to regulate the active power delivered to the patient, usually around an arbitrary setpoint. In fact, no manufacturer has a method to measure the active power actually delivered to the load. Measuring the d
Res. Biomed. Eng.. Publicado em: 05/02/2016
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5. Micropropagation of an elite F1 watermelon (Citrullus lanatus) hybrid from the shoot tip of field grown plants
The aim of this work was to develop a protocol for rapid micropropagation of an elite F1 hybrid watermelon cultivar using shoot tip of field-grown plants. Maximum frequency (73%) of shoot tip showed growth response in MS medium supplemented with 5 mg l-1 benzyl adenine (BA) and 0.1 mg l-1 indole-3 acetic acid (IAA). Upon transfer to cytokinin-enriched medium
Braz. arch. biol. technol.. Publicado em: 2012-06
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6. Excretion of Brucella abortus vaccine B19 strain during a reproductive cycle in dairy cows
This paper aimed to determine the excretion period of B19 vaccine strain during a complete reproductive cycle (from estrus synchronization, artificial insemination, pregnancy and until 30 days after parturition) of dairy cows from 3 to 9 years old that were previously vaccinated from 3 to 8 months. Three groups were monitored with monthly milk and urine coll
Brazilian Journal of Microbiology. Publicado em: 2012-06
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7. Detecção e isolamento de anelovírus em suínos e cultivos celulares. / Detection and isolation of anelloviruses in pigs and in cell lineages
Preliminary studies aiming the identification of possible viral agents associated with the postweaning multisystemic wasting syndrome (PMWS) revealed a possible negative association between TTSuV1 and occurrence of PMWS. Based on this finding was hypothesized that TTSuV1 might be able to inhibit the PCV2 multiplication, preventing the development of PMWS. To
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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8. Extensiometria óptica por Moiré geométrico digital para anãlise de tensões no plano / Optical extensometry by digital geometric Moiré for in-plane stress analysis
The study of the behavior of building structures pass through the determination of the strain and stresses to evaluate the level of local and global security against the active actions. In the last years in Brazil, the extensometers have been commonly used to measure the strain at a specific single point. The optical extensometry presents itself as an altern
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/06/2011
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9. Effect of warm ionized plasma medium on radiation properties of four elements microstrip antenna array printed on ferrite substrate
This paper describes theoretically the radiation properties of four element microstrip antenna array printed upon a typical ferrite substrate Ni1.062Co0.o2Fe1.948O4 in the presence of normal dc magnetic bias field. In loss-less isotropic warm plasma, this array antenna geometry excites both electromagnetic (EM) and electroacoustic plasma (P) waves in additio
Brazilian Journal of Physics. Publicado em: 2010-03
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10. Conversor CC/CA de alta freqüência baseado em inversores ressonantes com comutação seqüencial para excitação de uma tocha indutiva a plasma térmico
This work describes the study, the analysis, the project methodology and the constructive details of a high frequency DC/AC resonant series converter using sequential commutation techniques for the excitation of an inductive coupled thermal plasma torch. The aim of this thesis is to show the new modulation technique potentialities and to present a technologi
Publicado em: 2010
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11. Vegetation mapping of Serra do Cipo National Park (MG, Brasil) and its relation with morphometrical variables. / Classificação da vegetação do Parque Nacional da Serra do Cipó (MG) e sua relação com variáveis morfométricas
The following work maps the vegetation cover of Serra do Cipó National Park, Minas Gerais, Brazil, and correlates the flora distribution to the occurrence of the local morphometric variables: altitude, slope and face orientation, vertical and horizontal curvatures. Its objective is to provide some environment conditional information to the Park and to devel
Publicado em: 2009
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12. Perception and production of speech in a hearing impaired child during therapy / Percepção e produção de sons de fala em uma criança com deficiência auditiva em terapia fonoaudiológica
Introduction: Very few studies discuss speech development in hearing impaired children in the first years of life due to methodological difficulties and the number of variables involved. Acoustic inspection of articulatory adjustments and attempts to imitate a model made by the infant in different contexts can be a method to comprehend the manner in which fi
Publicado em: 2008