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Topic: Phase response

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Phase matter

phase transitions

Lunar phase

phase locked loop

phase space

phase modulation

three phase

phase shifts

Three phase electric power

moon phase

phase velocity

Gibbs phase rule

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	CTM: Frequency Response Tutorial
		The frequency response is defined as the magnitude and phase differences between the input and output sinusoids.
		The frequency is on a logarithmic scale, the phase is given in degrees, and the magnitude is given as the gain in decibels.
		The phase margin is the difference in phase between the phase curve and -180 deg at the point corresponding to the frequency that gives us a gain of 0dB (the gain cross over frequency, Wgc).
	www.engin.umich.edu /group/ctm/freq/freq.html (2446 words)

	Phase Response
		The phase of the frequency response is called the phase response.
		The phase response is a good way to look at short filter delays which are not directly perceivable as causing an ``echo''.
		We will show later that the impulse response is also given by the inverse z transform of the filter transfer function (or, equivalently, the inverse Fourier transform of the filter frequency response).
	ccrma-www.stanford.edu /~jos/filters/Phase_Response_I.html (225 words)

	Zero-Phase Filters (Site not responding. Last check: 2007-10-16)
		Figure 10.1: Impulse response and frequency response of a length 11 zero-phase FIR lowpass filter.
		Figure 10.1 shows the impulse response and frequency response of a length 11 zero-phase FIR lowpass filter designed using the Remez exchange algorithm.
		Figure 10.2: Amplitude response and phase response of the length 11 zero-phase FIR lowpass filter.
	ccrma-www.stanford.edu /~jos/filters/Zero_Phase_Filters.html (557 words)

	Modulation of the acute phase response by altered expression of the IL-1 type 1 receptor or IL-1ra -- Josephs et al. ...
		and the hepatic acute phase response to a turpentine abscess are
		blockade on the magnitude of the inflammatory response to a turpentine abscess remains controversial.
		the nonspecific inflammatory response to a turpentine abscess.
	ajpregu.physiology.org /cgi/content/full/278/4/R824 (4378 words)

	A Bessel Filter Crossover, and Its Relation to Others
		The phase quadrature that is characteristic of odd-order crossovers results in a moderate shift in the polar response lobe.
		In fact, the phase response is so close to a time delay that Bessel low-pass and all-pass filters may be used solely to produce a time delay, as described in [10].
		The phase of the low-pass typically drops near the cutoff frequency from an asymptote of zero as the frequency is increased, and asymptotically approaches a negative value.
	www.rane.com /note147.html (2761 words)

	Phase Distortion article (Site not responding. Last check: 2007-10-16)
		In this typical phase-inaccurate loudspeaker step response that is a measurement summing tweeter and woofer response, we see the tweeter initially rising with the input voltage (figure 4), but the woofer that is lagging by 180 degrees contributes the rapid falling immediately afterwards (figure 4), resulting in a totally mangled step response.
		Phase is easily audible as it is being changed, such as with a component frequency in a complex waveform.
		A phase alteration of 180 degrees in high frequencies from a 2nd order crossover would not seem to have any effect on the angle of location, as both sound sources (loudspeakers) are equally effected, yielding no differences in phase between the two ears.
	www.ocf.berkeley.edu /~ashon/audio/phase/phaseaud2.htm (3024 words)

	Audibility of Phase Distortion
		In a correspondence with Dr Lipshitz he pointed out that it the phase of the second tone is 0-degrees instead of 90-degrees, that the asymmetry in the positive and negative directions is greater.
		I interpret this result to mean that a flat phase response is a meaningful goal for a sound system, even if it may not be the most important goal.
		Note: If the phase of the 400 Hz tone is shifted by 180 degrees, after one cycle of the 400 Hz tone it just repeats, but the 200 Hz tone has undergone a 180 degree phase shift.
	www.silcom.com /~aludwig/Phase_audibility.htm (1717 words)

	Production of Granulocyte Colony-Stimulating Factor in the Nonspecific Acute Phase Response Enhances Host Resistance to ...
		and mediates the nonspecific acute phase response (2).
		The effect of reduction in acute phase protein concentrations on protection against infection conferred by the acute phase response.
		Differences in the acute phase responses of serum amyloid P component (SAP) and C3 to injections of casein or bovine serum albumin in amyloid-susceptible and resistant mouse strains.
	www.jimmunol.org /cgi/content/full/169/2/913 (3745 words)

	Controlling the phase response of a diffusive wave phased array system
		Previous phased array research using anti-phase sources has shown that the phase response to an object scanned through a heavily scattering medium provides information about object position but none about size.
		The consequence of this is that the phase response is dependent on the size of an object whilst still maintaining localization information.
		Furthermore, it is demonstrated that the phase response can be tuned to be most sensitive to the object size under investigation.
	www.opticsexpress.org /oearchive/source/26842.htm (454 words)

	Regulation of Plasminogen Gene Expression by Interleukin-6 -- Jenkins et al. 89 (7): 2394 -- Blood
		Induction of the acute phase response causes release of the acute phase mediator, interleukin-6 (IL-6),
		Glucocorticoids are mediators of the acute phase response
		Thus, the response of the Hep3B cells transfected with pGL2/hPLPR to rhIL-6 is consistent with transcriptional regulation of plasminogen gene expression by rhIL-6.
	www.bloodjournal.org /cgi/content/full/89/7/2394 (6961 words)

	The acute phase response and exercise: court and field sports -- Fallon et al. 35 (3): 170 -- British Journal of Sports ...
		The acute phase response is a common reaction to a range of
		assessed the response to a 160 km triathlon.
		Kushner I. The phenomenon of the acute phase response.
	bjsm.bmjjournals.com /cgi/content/full/35/3/170 (2389 words)

	Arthritis Research & Therapy \| Full text \| An association between the acute phase response and patterns of antigen ... (Site not responding. Last check: 2007-10-16)
		Two distinct patterns of proliferative response were found in the majority of patients: a diverse pattern, in which synovial fluid responses were greater than peripheral blood responses for all antigens tested; and a restricted pattern, in which peripheral blood responses to some antigens were more vigorous than those in the synovial fluid compartment.
		Additionally, increased responses to enteric bacteria and the presence of αEβ7 T cells in synovial fluid may reflect accumulation of gut associated T cells in the synovial compartment, even in the absence of an elevated acute phase response.
		This pattern of response would be expected if the synovial fluid memory T cells were recruited to the inflamed joint as a consequence of their memory phenotype rather than specific antigens.
	arthritis-research.com /content/5/5/R277 (3459 words)

	Acute-phase response (from immune system) -- Encyclopædia Britannica
		For example, the reference position for the hands of a clock is at the numeral 12, and the minute hand has a period of one hour.
		The three fundamental phases of matter are solid, liquid, and gas (vapour), but others are considered to exist, including crystalline, colloidal,...
		Earth, as seen from the Moon, shows the same phases in opposite order; e.g., Earth is full when the Moon is new.
	www.britannica.com /eb/article?tocId=215550 (992 words)

	Essential Role of STAT3 in the Control of the Acute-Phase Response as Revealed by Inducible Gene Activation in the ...
		The type II hemopexin interleukin-6 response element predominates the transcriptional regulation of the hemopexin acute phase responsiveness.
		Acute-phase response factor, a nuclear factor binding to acute-phase response elements, is rapidly activated by interleukin-6 at the posttranslational level.
		The cytokine response element of the rat alpha 1-acid glycoprotein gene is a complex of several interacting regulatory sequences.
	mcb.asm.org /cgi/content/full/21/5/1621 (7745 words)

	Minimum Phase Response Modeler (Site not responding. Last check: 2007-10-16)
		The purpose of Minimum Phase Response Modeler is allow the user to create and save modeled frequency and impedance files (.frd and.zda) for use in other software, such as crossover design programs.
		You can adjust response or impedance up or down any amount you choose as well, or you can modify the response using five Minimum Phase Equalization Modules that are adjustable to any frequency, bandwidth Q, or gain that you choose.
		Once completed, this modeled impedance response can also be saved out as a zda file containing both impedance magnitude and phase.
	www.pvconsultants.com /audio/targetgen/mprm.htm (359 words)

	DPS (Site not responding. Last check: 2007-10-16)
		Altering the phase response of a signal without changing its amplitude characteristics is commonly performed using an allpass filter, as in Figure 1.
		With this circuit, optimized for phase-shifting over the audio range, the phase at a given frequency is now under control of a digital signal.
		Several of these phase shift sections can be cascaded to realize greater phase shifts.
	www.web-ee.com /Schematics/Digital_Phase_Shifter/dps.htm (565 words)

	[No title]
		The phase variance of the amplifier was 13% and 41% for the speaker.
		The gain response is the ration of the output and input amplitudes and the phase response is the variation of the phase shift with respect to frequency.
		The frequency response of the speaker was measured using a function generator and an amplifier line out channel as input and a microphone as an output as shown in Figure 2.
	www.lems.brown.edu /~scp/en52/sample_lab.doc (1273 words)

	Inhaled Technosphere® Mimics the Normally-Occurring First Phase Insulin Response
		Approximating this response helps patients maintain post-meal (called postprandial) glucose control better than when insulin is delivered subcutaneously.
		In individuals without diabetes, there is a normally-occurring rapid and intense first phase insulin secretion in response to a meal.
		The study found that mimicking the first phase insulin release by giving a dose of TI allowed glucose elimination to reach maximum levels much faster than with regular subcutaneous insulin (45 minutes with TI against 240 minutes with subcutaneous insulin), thus facilitating postprandial glucose control.
	www.medicalnewstoday.com /medicalnews.php?newsid=26011&nfid=mnf (808 words)

	Lipopolysaccharide Inhibits the Late-Phase Response to Allergen by Altering Nitric Oxide Synthase Activity and ...
		Lipopolysaccharide Inhibits the Late-Phase Response to Allergen by Altering Nitric Oxide Synthase Activity and Interleukin-10 -- Tulic et al.
		Lipopolysaccharide Inhibits the Late-Phase Response to Allergen by Altering Nitric Oxide Synthase Activity and Interleukin-10
		The IgE-dependent allergic response is induced by IgE crosslinking
	www.ajrcmb.org /cgi/content/full/24/5/640 (4462 words)

	The REL MultiCap^TM - Phase Response versus ESR (Site not responding. Last check: 2007-10-16)
		The second effect of high ESR is that it causes a phase shift away from the expected ideal of 90 degrees between voltage and current at all frequencies.
		The phase response is degraded well below the capacitor's natural or self-resonant frequency when series losses are added.
		In this way, the resonance will be as high as possible, and the phase response will be maintained to the highest possible frequency.
	www.capacitors.com /catalogs/note_6.html (899 words)

	A SAF Binding Site in the Promoter Region of Human {gamma}-Fibrinogen Gene Functions as an IL-6 Response Element -- Ray ...
		A, Sequence of -285/-255, the region responsive to IL-6, is shown along with several mutant derivatives.
		IL-6 response of the mutated construct was evaluated.
		Acute phase response factor, a nuclear factor binding to acute-phase response elements, is rapidly activated by interleukin-6 at the post-translational level.
	www.jimmunol.org /cgi/content/full/165/6/3411 (4235 words)

	Finite Impulse Response FAQ: Properties
		"Linear Phase" refers to the condition where the phase response of the filter is a linear (straight-line) function of frequency (excluding phase wraps at +/- 180 degrees).
		Minimum-phase filters (which might better be called "minimum delay" filters) have less delay than linear-phase filters with the same amplitude response, at the cost of a non-linear phase characteristic, a.k.a.
		(The frequency response in the passband is a cosine shape which has been "raised" by a constant.) See dspGuru's Raised-Cosine FAQ for more information.
	www.dspguru.com /info/faqs/fir/props.htm (1054 words)

	Acute Phase Proteins* (Site not responding. Last check: 2007-10-16)
		response in vivo could lead to the development of new therapeutic strategies aimed at improving the organism's integrated
		Abst: Adult mammals respond to tissue damage by implementing the acute phase response, which comprises a series of specific
		response at the site of injury, the recruitment of the systemic defense mechanisms, the acute phase response of the liver and the
	www.hsc.wvu.edu /micro/IRI/tsld029.htm (241 words)

	The Phase Response
		have to be turned on at a certain instant, thus producing a transient response
		the overall response can be thought of as a sum of two identical sinusoids shifted
		Figure 3: Response of an FIR averaging filter to a causal cosine: input and
	www.faqs.org /docs/sp/sp-31.html (259 words)

	What does Stat3 do? -- Levy and Lee 109 (9): 1143 -- Journal of Clinical Investigation
		Raz, R., Durbin, J.E., and Levy, D.E. Acute phase response factor and additional members of the interferon-stimulated gene factor 3 family integrate diverse signals from cytokines, interferons, and growth factors.
		Disruption of the Jak1 gene demonstrates obligatory and nonredundant roles of the Jaks in cytokine-induced biologic responses.
		Stat3 activation is responsible for IL-6-dependent T cell proliferation through preventing apoptosis: generation and characterization of T cell- specific Stat3-deficient mice.
	www.jci.org /cgi/content/full/109/9/1143 (4415 words)

	Involvement of the Acute Phase Protein alpha 1-Acid Glycoprotein in Nonspecific Resistance to a Lethal Gram-negative ...
		Involvement of the Acute Phase Protein alpha 1-Acid Glycoprotein in Nonspecific Resistance to a Lethal Gram-negative Infection -- Hochepied et al.
		Because turpentine is a strong inducer of the acute phase response,
		Kushner, I., and Mackiewicz, A. in Acute Phase Proteins: Molecular Biology, Biochemistry, and Clinical Applications (Mackiewicz, A., Kushner, I., and Baumann, H., eds), pp.
	www.jbc.org /cgi/content/full/275/20/14903 (4508 words)

	Tissue-specific gene expression of prolactin receptor in the acute-phase response induced by lipopolysaccharides -- ...
		Tissue-specific gene expression of prolactin receptor in the acute-phase response induced by lipopolysaccharides -- Corbacho et al.
		Articles by Corbacho, A. Articles by Cross, C. Tissue-specific gene expression of prolactin receptor in the acute-phase response induced by lipopolysaccharides
		acute-phase response (APR) that is crucial for reestablishing
	ajpendo.physiology.org /cgi/content/abstract/287/4/E750 (264 words)

	C-reactive protein and cardiovascular disease: new insights from an old molecule -- Hirschfield and Pepys 96 (11): 793 ... (Site not responding. Last check: 2007-10-16)
		The major acute phase reactants: C-reactive protein, serum amyloid P component and serum amyloid A protein.
		Protamine-induced consumption of complement in acute phase sera.
		C-reactive protein, amyloidosis and the acute phase response.
	qjmed.oupjournals.org /cgi/content/full/96/11/793 (6982 words)

	Essential Role of STAT3 in the Control of the Acute-Phase Response as Revealed by Inducible Gene Activation in the ...
		Essential Role of STAT3 in the Control of the Acute-Phase Response as Revealed by Inducible Gene Activation in the Liver -- Alonzi et al.
		Gervois, P., Kleemann, R., Pilon, A., Percevault, F., Koenig, W., Staels, B., Kooistra, T. Global Suppression of IL-6-induced Acute Phase Response Gene Expression after Chronic in Vivo Treatment with the Peroxisome Proliferator-activated Receptor-{alpha} Activator Fenofibrate.
		Seshadri, V., Fox, P. L., Mukhopadhyay, C. Dual Role of Insulin in Transcriptional Regulation of the Acute Phase Reactant Ceruloplasmin.
	mcb.asm.org /cgi/content/abstract/21/5/1621 (1068 words)

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