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Basal Sliding and the Mechanics of Oscillation in a Mammalian Sperm Flagellum
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ABSTRACT
The mechanism of oscillation in cilia and flagella has been a long-standing mystery. This article raises the possibility of a mechanical explanation based on new findings relating to where in the flagellum microtubule sliding can occur-and where it cannot occur. All theoretical analyses of flagellar bending have until now made the assumption that sliding displacements at the base of the flagellum cannot occur. One consequence of this has been the need to accept that sliding must be transmitted through propagating bends, an idea that has been tolerated even though it becomes ...
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That's entrainment
; ...about 64 Hz (cycles per second) and a beat frequency of eight beats per second. The throbbing...third frequency known as a binaural beat frequency. Suppose we hear a tone of 200 Hz in...right ear. The brain will perceive a beat frequency of 4 Hz, the difference between these...
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Birefringence measurements of the actin bundle in the acrosomal processes of Limulus sperm.
; ...actin filaments (80 filaments in the basal region) (2). The actin bundle is discharged...retardance, was almost constant in the basal region (0.85 [+ or -] 0.11nm, mean [+ or...number of actin fibers contained in the basal region is almost constant. Because electron...
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Exposure to 200 PPM of methanol increases the concentrations of interleukin-1(beta) and interleukin-8 in nasal secretions of healthy volunteers
; ...microscopy was used to determine the ciliary beat frequency of nasal epithelial cells. Subjective...versus 13.4 pg/mL), nor did the ciliary beat frequency or the saccharin transport time. Both...respiratory mucosa. KEY WORDS - ciliary beat frequency, interleukin, methanol, ...
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A new approach to pharmacological effects on ciliary beat frequency in cell cultures--exemplary measurements under Pelargonium sidoides extract (EPs 7630).
; Abstract The ciliary beat frequency (CBF) is an important parameter...epithelium; Ciliated cells; Ciliary beat frequency; Pelargonium sidoides root extract...purpose of cleaning is the ciliary beat frequency (CBF) of ciliated cells (Boek...
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Let's solve your problem
; ...Ingersoll Rand Centac air compressor. This motor has a loud beat frequency that we have been able to reduce but not eliminate.The highest...0.133 in/s PK. The highest vibration peak appears at the beat frequency, which is 7200 CPM. The vibration at 7200 CPM modulates...
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A model of calcium waves in pancreatic and parotid acinar cells
; ...and are actively propagated across the basal region by Ca^sup 2+^ release through ryanodine...coupled Ca^sup 2+^ oscillators, with the basal region partially entrained to the apical region...waves that travel from the apical to the basal region (Ashby et al., 2002). Thus, ...
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Effect of Oxymetazoline on Healthy Human Nasal Ciliary Beat Frequency Measured With High-Speed Digital Microscopy and Mucociliary Transport Time
; ...regulation of healthy human nasal ciliary beat frequency (CBF) and its influence on nasal mucociliary...the normal range. Key Words: ciliary beat frequency, microscopy, mucociliary transport...tract and is influenced by ciliary beat frequency (CBF), as well as the properties of...
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Effects of nitric oxide on blood flow and mucociliary activity in the human nose
; ...mucociliary activity in vivo and ciliary beat frequency in vitro. The aim of the present study...L-arginine was found to increase ciliary beat frequency in vitro, and the NO donor sodium nitroprusside...shown to reduce the increased ciliary beat frequency of cultured bovine bronchial ...
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Incidence of primary ciliary dyskinesia in children with recurrent respiratory diseases
; ...6 2.5 years) with RRIs. The ciliary beat frequency (CBF) was measured with a stroboscopic...children. KEY WORDS -- child, ciliary beat frequency, ciliary ultrastructure, recurrent...a two-step protocol with a ciliary beat frequency (CBF) study and then ultrastructural...
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USING GUITARS TO TEACH VIBRATIONS AND ACOUSTICS: ARTICLE 4: PSYCHOACOUSTICS AND SOUND QUALITY
; ...is a beat. String tension can be adjusted to reduce the beat frequency. When it reaches zero, the strings are in tune with respect...Bringing the two strings back in tune clearly reduces the beat frequency. Playing through a small amplifier makes the demonstration...
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