Sentences with phrase «beat frequency»

The final value for the tail - beat frequency of live fish was calculated as the average of the six distinct main frequencies.

The note given off by the wing - beat frequency attracts males at specific mating times.

Further details on the fish tail - beat frequency analysis are in Material S1.

When fresh air was passed into the chamber, the researchers observed a 3 per cent drop in cilia beating frequency relative to the baseline value.

The free version has 36 high - quality ambient sounds, including 3 binaural beats frequencies for brainwave entrainment.

In contrast, when air mixed with 0.5 milligrams per cubic meter of formaldehyde was passed through the chamber, they observed a 7.4 per cent increase in cilia beating frequency relative to the baseline value.

The Penn researchers found that the fungal toxins activate protein kinase C (PKC), which decreases ciliary beat frequency and thus decreases MCC.

Brain Sync brainwave technology blends advanced meditation techniques with harmonically layered binaural beat frequencies.

The cilia beating frequency varied across samples but the difference was typically within a few hertz.

While flow cues created by tail - beat frequency proved to be a critical trigger for shoaling behavior, coloration proved slightly dominant.

To gain more insights, Weimerskirch and his colleagues outfitted dozens of frigates with solar - powered transmitters, or data - loggers, to measure the birds» heart rate, wing beat frequency, acceleration, altitude, and GPS coordinates.

Furthermore, at this tail beat frequency, we also find that fish vary their speed to match the robot speed, while exhibiting the maximum disparity between the average and the minimum distance from it.

Citation: Polverino G, Phamduy P, Porfiri M (2013) Fish and Robots Swimming Together in a Water Tunnel: Robot Color and Tail - Beat Frequency Influence Fish Behavior.

In addition, PIV analyses were performed for all the tail - beat frequencies used in the behavioral study in each of the focal compartments.

I vaguely rember a Carl Winsch talk where he noted that if you take two signals with 365 and 365.25 day periods, the resulting beat frequency would have a 1460 year period!

The results indicate that, obtained with a tail - beat frequency of, is a critical speed for the robotic fish, with increases above or below this threshold differentially affecting zebrafish collective response.

The tail - beat frequency for golden shiners was measured as 3.32 Hz.

In laboratory imaging experiments with human upper airway cells, researchers showed that acute exposure to aflatoxins slowed down and impaired key defense mechanisms in the airways, including mucosal ciliary clearance (MCC) and ciliary beat frequency (CBF).

Further increasing the formaldehyde concentration to 1 milligram per cubic meter led to a dramatic increase — up to 136.4 per cent — in cilia beating frequency relative to the baseline value.

At even higher formaldehyde concentrations of 3.0 milligrams per cubic meter, however, the researchers observed an unexpected decrease in cilia beating frequency, possibly due to irreversible cell damage caused by the formaldehyde.

Wei Wang and Zhi Ping Wang at the A * STAR Singapore Institute of Manufacturing Technology, De Yun Wang at the National University of Singapore and co-workers have now developed the first microfluidic device that enables the direct observation of cilia and their beating frequency on a polyester membrane [1].

«This new chip enables us to perform live electrophysiological measurements to assess the integrity of the endothelial barrier in the heart using TEER measurements, while simultaneously quantifying the beating frequency of the heart cells using MEA.

By enabling the observation of cilia beating frequency, the experimental model described in this work provides more realism for clinical applications.

The beat frequency is a direct measure of the rotation that causes it, and C - II was able to measure Earth's rotation rate to one part in a million.

In collaboration with doctoral candidate Paul Phamduy and NYU - Poly research scholar Giovanni Polverino, Porfiri designed an experiment to examine the interplay of visual cues and flow cues — changes in the water current as a result of tail - beat frequency — in triggering a live golden shiner fish to either approach or ignore a robotic fish.

As the robot's tail - beat frequency increased, it had a profound impact on the group's collective behavior, causing a spike in the cohesion and a small but detectable decrease in polarization — the fish largely milled together and even matched their speeds to that of the robot as it reached a certain tail - beat frequency.

The team used a remote control to drive the robot in a circular swimming pattern, while varying its tail - beat frequency.

Next, the unknown laser light is combined with the comb's light to get the beat frequency (that is, the difference in frequency) between it and the nearest comb line.

In the absence of such a wave meter, you can systematically vary the repetition rate and the offset frequency to monitor how the beat frequency changes in response.

Both the offset frequency and the beat frequency are also within range to be measured by the cesium clock because they must be smaller than the comb spacing.

In electronics and optics, this procedure of combining signals to get the beat frequency is called heterodyne detection.

No constant motion, no beat frequency and no coffee spilt.

«When the fish encountered a robot that mimicked both the coloration and mean tail - beat frequency for the species, it was likeliest to spend the most time in the nearest proximity to it,» Porfiri said.

«Even at tail - beat frequencies that were less than optimal for the live fish, the shiners were always more drawn to the naturally colored robot,» Porfiri added.

While the robot's position remained static, the researchers experimented with several different tail - beat frequencies.

In other words, for a tail - beat frequency matching the spontaneous tail - beat frequency of live fish, the naturally colored robotic fish was more attractive than the red replica.

Furthermore, post-hoc comparisons revealed that fish spent significantly more time in the vicinity of the bioinspired robotic fish as its tail - beat frequency was set to 3 Hz (185.8 s) as compared to the case when the robot tail - beat frequency was 0 Hz or 2 Hz (121.3 s or 132.7 s, respectively).

The time spent by fish in the front compartment was not affected by the tail - beat frequency of the Gray robot, that is, the time spent in the front compartment did not significantly vary across experimental conditions.

Specifically, in this series of works it is demonstrated that the behavioral response of zebrafish individuals and small shoals varies as the aspect ratio, color pattern, and tail - beat frequency of a robotic fish is changed.

Specifically, when considering the Gray robot, the time spent by fish in each compartment of the focal region was a function of the robot tail - beat frequency, while no significant variations were observed in the Red robot, see Figure 7.