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The 8494B model provides a calibrated attenuation level from 0 to 11 dB with an attenuation step of 1 dB.
Similarly, the range and attenuation step of the 8496B model are [0-110 dB] and 10 dB, respectively.
Purification and potential pathogen-attenuation steps include cryoprecipitation, which concentrates the FVIII; ion exchange or gel permeation chromatography which purifies the FVIII from the plasma and immunoaffinity chromatography, which has the added benefit of reducing viruses such as hepatitis A and parvovirus B19.
The change in signal amplitude at the steady state (that leads to amplification or attenuation) at step i is given by the ratio of the effective rate constants for activation and deactivation k i + k i −. k i + k i − > 1 results in signal amplification and k i + k i − < 1 leads to attenuation of the signal at step i [ 13, 14].
Section 5.3 describes two tuning step attenuation techniques in order to obtain sub-megahertz frequency resolution.
Importantly, the filtering capabilities are determined by the presence of feedback as well as the amplification and attenuation properties at different steps in the cascade that are set by the differences in phosphatase activities at different stages along the cascade.
In mammalian systems, the response to ER stress involves four major steps: (1) attenuation of protein synthesis; (2) transcriptional induction of UPR target genes, including chaperones and foldases; (3) transcriptional induction of ERAD components, and in case these three steps are not sufficient, (4) induction of apoptosis (reviewed in Yoshida 2007).
With an upward luminance step, the attenuation effect was almost purely subtractive in the contrast range from 0.1 or 0.2 up to 0.45.
Finally, there appeared to be a general trend that for a given step direction, attenuation was more persistent for the stimulus type which modulates to the same direction as the mean luminance, i.e., for the increment bars when presented with an upward luminance step and for the decrement bars when presented with a downward step.
We postulate that this VSG-induced attenuation represents the initiation step of an antigenic in situ switch.
In a follow-up step, the attenuation coefficient for the OCT signal within such a fractal-identified region of interest could be extracted.
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