Results 41 to 50 of about 1,231,611 (370)

Determinants of relapse periodicity in Plasmodium vivax malaria

Malaria Journal, 2011
Plasmodium vivax is a major cause of febrile illness in endemic areas of Asia, Central and South America, and the horn of Africa. Plasmodium vivax infections are characterized by relapses of malaria arising from persistent liver stages of the parasite ...
N. White
semanticscholar   +1 more source

Applicability of Evapotranspiration Models and Water Consumption Characteristics Across Different Croplands

Agronomy
Estimating the actual evapotranspiration (ETc act) of cropland in arid areas, exploring the time trend, and analyzing periodic variation are the key to long-term assessment of water resource availability and regional drought.
Jing Zhang, Li Wang, Gong Cheng, Liangliang Jia   +3 more
doaj   +1 more source

Periodicity: A Characteristic of Heart Rate Variability Modified by the Type of Mechanical Ventilation After Acute Lung Injury

Frontiers in Physiology, 2018
We present a novel approach to quantify heart rate variability (HRV) and the results of applying this approach to synthetic and original data sets. Our approach evaluates the periodicity of heart rate by calculating the transform of Relative Shannon ...
Anurak Thungtong, Anurak Thungtong, Matthew F. Knoch, Frank J. Jacono, Frank J. Jacono, Thomas E. Dick, Thomas E. Dick, Kenneth A. Loparo   +7 more
doaj   +1 more source

Rieger-type periodicity during solar cycles 14-24: estimation of dynamo magnetic field strength in the solar interior

, 2016
Solar activity undergoes a variation over time scales of several months known as Rieger-type periodicity, which usually occurs near maxima of sunspot cycles.
Ballester, Jose Luis, Gurgenashvili, Eka, Hanslmeier, Arnold, Kukhianidze, Vasil, Oliver, Ramon, Poedts, Stefaan, Ramishvili, Giorgi, Shergelashvili, Bidzina, Zaqarashvili, Teimuraz   +8 more
core   +1 more source

Parallel and Perpendicular Lamellae on Corrugated Surfaces

, 2003
We consider the relative stability of parallel and perpendicular lamellar layers on corrugated surfaces. The model can be applied to smectic phases of liquid crystals, to lamellar phases of short-chain amphiphiles and to lamellar phases of long-chain ...
Andelman, David, Tsori, Yoav
core   +1 more source

Nonlinear Behavior Characterization of a 3-Layer Laminated Cantilever Beam System

Nonlinear Engineering, 2014
This research aims to characterize the nonlinear responses of a 3-layer laminated composite cantilever beam systemsubjected to evenly distributed dynamic excitations, with the employment of the Periodicity Ratio (PR) method.
Dai Liming, Huang Kai, Huang Tousheng, Sun Lin   +3 more
doaj   +1 more source

Effect of Out-Of-Hour Admission on Fluid Treatment of Emergency Department Patients with Suspected Infection; a Multicenter Post-Hoc Analysis

Archives of Academic Emergency Medicine, 2023
Introduction: Sepsis is a life-threatening and common cause of Emergency department (ED) referrals. Out-of-hour staffing is limited in ED, which may potentially affect fluid administration.
Marie Kristine Jessen, Anna Drescher Petersen, Hans Kirkegaard   +2 more
doaj   +1 more source

Re-parameterization Invariance in Fractional Flux Periodicity

, 2004
We analyze a common feature of a nontrivial fractional flux periodicity in two-dimensional systems. We demonstrate that an addition of fractional flux can be absorbed into re-parameterization of quantum numbers.
Aharonov Y., Bachtold A., Byers N., Büttiker M., Chandrasekhar V., Cheung H. F., Cheung H. F., Choi M. Y., Fujiwara A., Iso S., Lévy L. P., Mailly D., Manton N. S., Roche S., Roche S., Sasaki K., Sasaki K., Tonomura A.   +17 more
core   +1 more source

Free-space propagation of optical coherence lattices and periodicity reciprocity.

Optics Express, 2015
We examine paraxial propagation of recently introduced optical coherence lattices in free space and demonstrate a novel phenomenon of periodicity reciprocity between their intensity and coherence properties.
Liyuan Ma, S. A. Ponomarenko
semanticscholar   +1 more source

Harmony perception by periodicity detection [PDF]

arXiv.org, 2013
The perception of consonance/dissonance of musical harmonies is strongly correlated with their periodicity. This is shown in this article by consistently applying recent results from psychophysics and neuroacoustics, namely that the just noticeable ...
Frieder Stolzenburg
semanticscholar   +1 more source