您搜索了: 250 hz to 5 khz, peaking chs 17–20: (英语 - 葡萄牙语)

a. pure tone thresholds air conduction over 25 dbhl at 250 hz to 8 khz
a. limiares tonais por via aérea melhores que 25db na nas frequências de 250hz a 8khz

the measurement was done from 250 hz to 6000 hz.
o sinal foi mensurado nas frequências de 250 hz a 6000 hz.

the determination of hearing thresholds was performed at frequencies of 250 hz to 8 khz.
a pesquisa dos limiares de audibilidade foi realizada nas frequências de 250 hz a 8 khz.

in 2013, filipo et al. investigated 50 patients affected by moderate shl, involving all frequencies from 250 hz to 8 khz a flat audiogram.
filipo et al. 2013 investigaram 50 pacientes afetados por psa moderada e envolvendo todas as frequências de 250 hz a 8 khz audiograma plano.

ardic et al. 1998 studied 29 subjects with vitiligo compared with a 41-subject control group, applying audiometry from 250 hz to 16 khz.
ardic et al. estudaram 29 indivíduos com vitiligo e 41 no grupo controle com audiometria de 250 hz a 16khz, encontrando limiares tonais, de 4000 a 10000hz, no grupo com vitiligo, significativamente piores que no grupo controle.

frequencies ranging from 250 hz to 8000 hz were tested with the subjects placed with their backs to the audiometer;
foram avaliadas as frequências de 250 hz a 8000 hz com os sujeitos posicionados de costas para o audiômetro;

air conduction audiometry was done for frequencies ranging from 250 hz to 8 khz, and when the threshold was above 25 db the analysis was carried out via bone conduction audiometry using frequencies from 500 hz to 4 khz.
as freqüências avaliadas por via aérea foram de 250 a 8 khz e, quando o limiar encontrado fosse superior a 25 db, realizou-se a pesquisa por via óssea de 500 a 4 khz.

however, only 37 children of both genders and age range between 7 and 12 years met the following inclusion criteria: no hearing complaints, no middle ear impairment, and hearing thresholds within the normal range less than or equal to 15 dbhl at frequencies from 250 hz to 8 khz.
contudo, apenas 37 crianças de ambos os gêneros e idades entre 7 e 12 anos preencheram os critérios para inclusão na amostra: ausência de queixas auditivas e de comprometimento de orelha média, bem como limiares de audibilidade dentro da normalidade menores ou iguais a 15 dbna nas frequências de 250 hz a 8 khz.

furthermore, people should present normal otoscopy and auditory thresholds under or equal 25 db na in the frequencies from 250 hz to 8 khz. all individuals reported to work from four to eight hours every day exposed to the substance.
além disso, como critério de inclusão, os indivíduos deveriam apresentar meatoscopia normal e limiares auditivos menores ou iguais a 25 db na nas frequências de 250 hz a 8 khz.todos os indivíduos relataram trabalhar de quatro a oito horas, todos os dias, expostos à substância.

presents a complete descriptive analysis about the comparison of the performance on the sound lateralization test of the seven subjects that presented normal audiometric results in all frequencies 250 hz to 8k hz and of the 23 subjects that presented normal hearing on the frequencies of 500 hz, 1 and 2 khz, but with threshold droppings on the frequencies above 3 khz.
corresponde a uma análise descritiva completa, segundo a comparação entre o desempenho no teste de lateralização sonora, dos sete indivíduos que apresentavam audiometria com resultados normais em todas as freqüências 250 até 8 khz e dos 23 indivíduos que apresentavam audição normal nas freqüências de 500, 1k e 2khz, mas com rebaixamento do limiar, nas freqüências a partir de 3khz tabela 4.

it was considered individuals with hearing evaluation within normal standards those with pure tone thresholds by air conduction to 25 dbna, in the frequencies of 250 hz to 8 khz, and pure tone thresholds by bone conduction to 15 dbna, in the frequencies of de 500 hz to 4 khz, with difference between the thresholds of air conduction and bone conduction less or equal to 10 db, tympanometric curve type a and presence of acoustic reflexes in the frequencies of 500 hz, 1, 2 and 4 khz.
considerou-se indivíduos com avaliação audiológica dentro dos padrões de normalidade aqueles que apresentaram limiares tonais por via aérea até 25 dbna nas frequências de 250 a 8000 hz e limiares tonais por via óssea até 15 dbna nas frequências de 500 a 4000 hz com diferença entre os limiares de via aérea e via óssea menor ou igual a 10 db, curva timpanométrica do tipo a e presença de reflexos acústicos nas frequências de 500, 1000, 2000 e 4000 hz.

to evaluate the peripheral hearing was held to pure tone audiometry by air in the sound frequencies from 250 hz to 8000 hz, made in a soundproof booth and having been based on the criteria of normality of the american speech-language-hearing association asha thresholds tonal smaller or equal to 20 dbhl.
para avaliar a audição periférica foi realizada a audiometria tonal liminar, por via aérea nas frequências sonoras de 250 hz a 8000 hz, feita em cabina acústica e tendo sido adotado o critério de normalidade da american speech-language-hearing association asha de limiares tonais menores ou iguais a 20 dbna.

vibration test systems employing feedback or closed loop techniques and incorporating a digital controller, capable of vibrating a system at 10 g rms or more over the entire range 20 hz to 2000 hz and imparting forces of 50 kn, measured 'bare table', or greater; b. digital controllers, combined with specially designed vibration test software, with a "real time bandwidth" greater than 5 khz designed for use with vibration test systems specified in 2b116.a.; c. vibration thrusters (shaker units), with or without associated amplifiers, capable of imparting a force of 50 kn, measured 'bare table', or greater and usable in vibration test systems specified in 2b116.a.; d. test piece support structures and electronic units designed to combine multiple shaker units in a system capable of providing an effective combined force of 50 kn, measured 'bare table', or greater, and usable in vibration systems specified in 2b116.a. technical note: in 2b116, 'bare table' means a flat table, or surface, with no fixture or fittings. 2b117 equipment and process controls, other than those specified in 2b004, 2b005.a., 2b104 or 2b105, designed or modified for densification and pyrolysis of structural composite rocket nozzles and re-entry vehicle nose tips. 2b119 balancing machines and related equipment, as follows: n.b.: see also 2b219. a. balancing machines having all the following characteristics: 1. not capable of balancing rotors/assemblies having a mass greater than 3 kg; 2. capable of balancing rotors/assemblies at speeds greater than 12500 rpm; 3. capable of correcting unbalance in two planes or more; and 4. capable of balancing to a residual specific unbalance of 0,2 g mm per kg of rotor mass; note: 2b119.a. does not control balancing machines designed or modified for dental or other medical equipment.
sistemas para ensaios de vibrações que utilizem técnicas de realimentação negativa ou de ciclo fechado e disponham de um controlador digital, capazes de fazer vibrar um sistema a 10 g rms ou mais em toda a gama de frequências compreendida entre 20 hz e 2000 hz e de transmitir forças iguais ou superiores a 50 kn, medidas "em mesa nua";