Effects of numbers of repetitions, repetition rate, frequency separation, and frequency range on auditory streaming in budgerigars (Melopsittacus undulatus)

2018 ◽  
Vol 144 (3) ◽  
pp. 1742-1742
Author(s):  
Huaizhen Cai ◽  
Laurel A. Screven ◽  
Micheal L. Dent
Keyword(s):  
Repetition Rate ◽  
Frequency Separation ◽  
Melopsittacus Undulatus ◽  
Frequency Range ◽  
Auditory Streaming ◽  
Rate Frequency

Generation of femtosecond pulses based on efficient frequency doubling of erbium fiber oscillator-amplifier laser

2014 ◽  
Vol 23 (02) ◽  
pp. 1450016 ◽  
Author(s):  
Guanyu Liu ◽  
Zhiqiang Lv ◽  
Zibo Gong ◽  
Kebin Shi
Keyword(s):  
Conversion Efficiency ◽  
Repetition Rate ◽  
Nonlinear Crystal ◽  
Average Power ◽  
Frequency Doubling ◽  
Single Mode ◽  
Fiber Amplifier ◽  
Femtosecond Pulses ◽  
Rate Frequency

We report on frequency doubling of 1.55-μm fiber oscillator-amplifier laser with conversion efficiency of 27% by using off-the-shelf nonlinear crystal. The system generates 135-femto-second (fs) pulses with average power of 110 mW at 80 MHz repetition rate. Frequency doubling efficiency as a function of pulse pre-chirp in front of a single mode erbium fiber amplifier was investigated.

High-cut characteristics of the baroreflex neural arc preserve baroreflex gain against pulsatile pressure

2002 ◽  
Vol 282 (3) ◽  
pp. H1149-H1156 ◽  
Author(s):  
Toru Kawada ◽  
Can Zheng ◽  
Yusuke Yanagiya ◽  
Kazunori Uemura ◽  
Tadayoshi Miyamoto ◽  
...  
Keyword(s):  
Heart Rate ◽  
Transfer Function ◽  
Sympathetic Nerve Activity ◽  
Dynamic Range ◽  
Open Loop ◽  
Loop Gain ◽  
Frequency Range ◽  
Nerve Activity ◽  
Pulsatile Pressure ◽  
Rate Frequency

A transfer function from baroreceptor pressure input to sympathetic nerve activity (SNA) shows derivative characteristics in the frequency range below 0.8 Hz in rabbits. These derivative characteristics contribute to a quick and stable arterial pressure (AP) regulation. However, if the derivative characteristics hold up to heart rate frequency, the pulsatile pressure input will yield a markedly augmented SNA signal. Such a signal would saturate the baroreflex signal transduction, thereby disabling the baroreflex regulation of AP. We hypothesized that the transfer gain at heart rate frequency would be much smaller than that predicted from extrapolating the derivative characteristics. In anesthetized rabbits ( n = 6), we estimated the neural arc transfer function in the frequency range up to 10 Hz. The transfer gain was lost at a rate of −20 dB/decade when the input frequency exceeded 0.8 Hz. A numerical simulation indicated that the high-cut characteristics above 0.8 Hz were effective to attenuate the pulsatile signal and preserve the open-loop gain when the baroreflex dynamic range was finite.

1-GHz repetition-rate frequency-modulation mode-locked neodymium lasers at 13 μm

1991 ◽  
Vol 16 (14) ◽  
pp. 1101 ◽  
Author(s):  
Feng Zhou ◽  
G. P. A. Malcolm ◽  
A. I. Ferguson
Keyword(s):  
Frequency Modulation ◽  
Repetition Rate ◽  
Neodymium Lasers ◽  
Modulation Mode ◽  
Rate Frequency

High repetition rate frequency-doubled Nd:YAG laser for airborne bathymetry

1981 ◽  
Vol 20 (6) ◽  
pp. 968 ◽  
Author(s):  
Donna B. Northam ◽  
M. A. Guerra ◽  
M. E. Mack ◽  
I. Itzkan ◽  
C. Deradourian
Keyword(s):  
Nd:Yag Laser ◽  
Repetition Rate ◽  
High Repetition Rate ◽  
High Repetition ◽  
Rate Frequency
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