interference

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interference

 [in″ter-fēr´ens]
1. opposition to or hampering of some activity.
2. impairment of cardiac impulse conduction due to refractoriness of the tissue; the refractoriness is a physiological response to passage of a preceding impulse.
3. a premature contact point on the occlusal surface of the teeth.
electromagnetic interference electrical signals of nonphysiological origin that may affect pacemaker function; they can either inappropriately inhibit pacemaker output or trigger unnecessary pulses. Pacemakers with bipolar leads are less sensitive to this.
occlusal i's areas of interference on teeth that hamper proper occlusion and smooth, gliding, harmonious jaw movements.

in·ter·fer·ence

(in'tĕr-fēr'ens),
1. The coming together of waves in various media in such a way that the crests of one series correspond to the hollows of the other, the two thus neutralizing each other; or so that the crests of the two series correspond, thus increasing the excursions of the waves.
2. Collision within the myocardium of two waves of excitation at the junction of territories controlled by each, as is seen in atrioventricular (AV) dissociation.
3. Also in AV dissociation, the disturbance of the regular rhythm of the ventricles by a conducted impulse from the atria, for example, by a ventricular capture (interference beat).
4. The condition in which infection of a cell by one virus prevents superinfection by another virus, or in which superinfection prevents effects that would result from infection by either virus alone, even though both viruses persist.
[inter- + L. ferio, to strike]

interference

Lab medicine The effect that unmeasured components in a specimen or system have on the accuracy of a component being measured. See Electromagnetic interference, Matrix, Matrix interference, Matrix effect, Nerve interference.

in·ter·fer·ence

(in'tĕr-fēr'ĕns)
1. The coming together of waves in various media in such a way that the crests of one series correspond to the hollows of the other, the two thus neutralizing each other; or so that the crests of the two series correspond, thus increasing the excursions of the waves.
2. Collision within the myocardium of two waves of excitation at the junction of territories controlled by each, as is seen in atrioventricular dissociation.
3. Also, in atrioventricular dissociation, the disturbance of the regular rhythm of the ventricles by a conducted impulse from the atria, e.g., by a ventricular capture (interference beat).
4. The condition in which infection of a cell by one virus prevents superinfection by another virus, or in which superinfection prevents effects that would result from infection by either virus alone, even though both viruses persist.
5. Effect of a component on the accuracy of measurement of the desired analyte.
[inter- + L. ferio, to strike]

interference

see CHROMATID INTERFERENCE.

interference

Modification of light intensity arising from the joint effects of two or more coherent trains of light waves superimposed at the same point in space and arriving at the same instant. The waves may either reinforce each other, being in phase (constructive interference) or cancel each other, being out of phase (destructive interference). See coherent sources; Young's experiment; holography; phase; optical coherence tomography.

in·ter·fer·ence

(in'tĕr-fēr'ĕns)
1. The coming together of waves in various media in such a way that the crests of one series correspond to the hollows of the other, the two thus neutralizing each other; or so that the crests of the two series correspond, thus increasing the excursions of the waves.
2. Condition in which infection of a cell by one virus prevents superinfection by another virus, or in which superinfection prevents effects that would result from infection by either virus alone, even though both viruses persist.
[inter- + L. ferio, to strike]

Patient discussion about interference

Q. Does omega-3 interfere with diabetes treatment? I’m a 55 years old man, and was diagnosed with diabetes mellitus, along with high lipid levels several years ago. A couple of months ago I read that omega-3 can protect your heart and brain, so I started to take omega-3 pills every day. Yesterday I read in some website that omega-3 can interfere with the drugs I take to treat my diabetes- Is that right?

A. Omega-3 doesn’t influence the treatment of your diabetes, and since you have high lipids, that can contribute to some of the damage diabetes does to your body, omega-3, that may lower the lipid level in your may actually help you treat yourself overall better. However - consult your doctor. Better be safe than sorry...

Q. Will my bipolar meds (lamictal and depakote) interfere with my birth control pills? We have been married for the past 12 yrs but we don’t have a child because I am paranoid of delivery. But it doesn’t affect our intimacy. I am using birth control pills for the past few years and I could rely on it. Now the new problem is that I was recently diagnosed as bipolar-II. The Doctor prescribed some medicines for me. Will my bipolar meds (Lamictal and Depakote) interfere with my birth control pills?

A. there are interactions, birth control pills can reduce the amount of Lamictal in the blood, causing it to be less affective. the drug level in plasma should be monitored. ask both your therapists about it- your gynecologist and the psychiatrist.

More discussions about interference
References in periodicals archive ?
Therefore, the increment in the optical path difference is monotone similar to [theta], leading to a change in the interference fringe spacing.
In addition, with this kind of plasmon fields, it is possible to induce arrays of particles whose distributions depend on the interference fringes and the plasmon polarization effects are capable of inducing the particles tunable dipole moments.
When an etalon sample is illuminated with white light, one observes a set of interference fringes in the spectrum of the transmitted light.
Therefore, the information of interference fringes can be obtained by the sifting process of the hologram.
As only qualitative assessment of the obtained results (deformation character of the page and its relative value are defined by location shape and density of interference fringes on the page surface) was carried out direction of the page deflection (convexity) was not determined.
Spectral averaging over the wavelength region is not acceptable since the interference fringes from thin layers should not be averaged.
Figure 2 shows results of interference fringes within a PANDA ring wave guide InGaAsP/InP, where the radius [R.sub.1] = 1.550 [micro]m, [R.sub.2] is varying from 1.552 to 1.558 [micro]m, [R.sub.3] = 3.10 [micro]m, [A.sub.eff] = 0.3 [micro][m.sup.2], [n.sub.eff] = 3.14, [n.sub.2] = 1.3 x [10.sup.-13] [cm.sup.2]/W, [[kappa].sub.1] = [[kappa].sub.2] = 0.5, [gamma] = 0.01, and [[lambda].sub.0] = 1.550 nm.
Photoelastic analysis is a visual measurement based on the property of some transparent materials to exhibit interference fringes when stressed in a polarized light field.
This represents a significant improvement over conventional TIRF as it removes interference fringes and allows fast multi-angle illumination to correct for chromatic differences and 3D illumination of the cell cortex, as well as a modality for fast photoactivation or FRAP.
The geometry of the interference fringes' indicate the uniformity of measured Si/Si[O.sub.2] structures (Figure 2).
included a grid of thin absorbing wires located in the interference fringes plane.
Meanwhile, on 10 December 2009, it was announced that MeerKAT Precursor, KAT 7, had seen its first interference fringes from a celestial source.

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