نتایج جستجو برای: burst effect
تعداد نتایج: 1665961 فیلتر نتایج به سال:
Practice and theory research proved the “square effect” during longwall mining with hard–thick strata lying on coal seam, which could cause severe underground pressure even dynamic disasters, such as burst; therefore, it became a key area stage that need special attention. The combined active–passive seismic computed tomography (CT) was introduced to detect abutment stress concentration in seam...
A 2-year vineyard survey failed to the provide evidence that Uncinula necator (Schw.) Burr. survived winter as mycelium in dormant infected buds in Khorassan province. Ascospores of U. necator, were collected by a volumetric spore trap operating constantly in a vineyard for 55 days after the bud burst. The first powdery mildew colonies were consistently found on the leaves of the shoots (7.30 c...
Differentiated Services (Diffserv) which was proposed by Internet Engineering Task Force (IETF), is a scalable and robust model for providing the end-to-end QoS. In the Diffserv networks, metering mechanisms are used to measure traffic stream. The single rate Three Color Meter (srTCM) [1],which was proposed by IETF, meters an IP packet stream and marks its packets either green, yellow, or red....
To assess the role of protein kinase C (Ca2+/phospholipid-dependent enzyme) in the activation of the human neutrophil respiratory burst, we have utilized an ether lipid of the type 1-O-alkyl-2-O-methylglycerol (AMG), recently shown to be an inhibitor of this kinase. AMG-C16 (with an hexadecyl chain at the sn-1 position) was found to inhibit the respiratory burst induced by sub-optimal concentra...
PURPOSE The effect of isoflurane on the subcortical P14 component of the median nerve somatosensory evoked potential (SEP) is poorly known. We studied whether the P14 wave from the upper brainstem, recorded with a nasopharyngeal electrode, was attenuated at the isoflurane-induced EEG burst-suppression level. We also compared the effect of isoflurane on the P14, cervical N13 and cortical N20, N3...
OBJECT Tinnitus is an auditory phantom percept related to tonic and burst hyperactivity of the auditory system. Two parallel pathways supply auditory information to the cerebral cortex: the tonotopically organized lemniscal system, and the nontonotopic extralemniscal system, which fire in tonic and burst mode, respectively. Electrical cortex stimulation is a method capable of modulating activit...
OBJECTIVES The purpose of this study was to determine if burst atrial pacing would have an effect on terminating atrial fibrillation. BACKGROUND We hypothesized that frequency domain analysis of a filtered wide bipolar atrial electrogram describes the global organization of atrial fibrillation (AF) and should vary over time. Timing burst pacing to periods of high organization of AF should pro...
We previously observed that dopamine D2-like receptor blockade in rats licking for sucrose produced a within-session decrement of the emission of licking bursts similar to the effect of either reward devaluation, or neuroleptics, on operant responding for different rewards, which, accordingly, we interpreted as an extinction-like effect. This implies that exposing animals to reward devaluation ...
A comparative study of real-time kinetics of respiratory burst, monitored by H2O2-dependent chemiluminescence, and phospholipase D (PLD)-mediated phosphatidylcholine breakdown has been undertaken on human neutrophils stimulated by N-formylmethionyl-leucylphenylalanine in the absence of cytochalasin B. The fungal metabolite 17-hydroxywortmannin (HWT), an inhibitor of NADPH oxidase activation, de...
OBJECTIVE Spinal cord stimulation is commonly used to treat medically intractable pain. Different stimulation designs are used to obtain pain suppression such as tonic stimulation, high frequency stimulation, and burst stimulation. Preliminary analysis of the same data used in this study demonstrated that burst stimulation likely modulates the medial pain pathways in contrast to tonic stimulati...
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