Results 11 to 20 of about 389,286 (287)

Eight-year periodical outbreaks of the train millipede [PDF]

open access: yesRoyal Society Open Science, 2021
Periodical cicadas are the only confirmed periodical animals with long life cycles. In Japan, however, 8-year periodicity had been suggested in a species of train millipedes that had frequently obstructed trains in the central mountainous region of ...
Keiko Niijima   +2 more
doaj   +1 more source

Understanding Periodic and Non-periodic Chemistry in Periodic Tables [PDF]

open access: yesFrontiers in Chemistry, 2021
The chemical elements are the “conserved principles” or “kernels” of chemistry that are retained when substances are altered. Comprehensive overviews of the chemistry of the elements and their compounds are needed in chemical science. To this end, a graphical display of the chemical properties of the elements, in the form of a Periodic Table, is the ...
Changsu Cao   +5 more
openaire   +3 more sources

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

open access: yesArchives 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   +2 more
doaj   +1 more source

On the dynamical behaviors and periodicity of difference equation of order three

open access: yesJournal of New Results in Science, 2022
The major target of our research paper is to demonstrate the boundedness, stability and periodicity of the solutions of the following third- order difference equation $$ w_{n+1} = \alpha w_{n} +\frac {\beta+ \gamma w_{n_-2} }{\delta+\zeta w_{n-2}} , \;\;
Elsayed Elsayed, Ibraheem Alsulami
doaj   +1 more source

State Transition Analysis of GSM Encryption Algorithm A5/1

open access: yesJournal of Communications Software and Systems, 2022
A5/1 stream cipher is used in Global System for Mobile Communication(GSM) phones for secure communication. A5/1 encrypts the message transferred from a mobile user.
Praveen Kumar Gundaram   +2 more
doaj   +1 more source

Periodic Behaviors [PDF]

open access: yesSIAM Journal on Control and Optimization, 2010
This paper studies behaviors that are defined on a torus, or equivalently, behaviors defined in spaces of periodic functions, and establishes their basic properties analogous to classical results of Malgrange, Palamodov, Oberst et al. for behaviors on R^n. These properties - in particular the Nullstellensatz describing the Willems closure - are closely
Napp, Diego   +2 more
openaire   +2 more sources

Global dynamics of a dengue fever model incorporating transmission seasonality

open access: yesNonlinear Analysis, 2023
The changes of seasons cause that the transmission of dengue fever is characterized by periodicity. We develop a dengue fever transmission model incorporating seasonal periodicity and spatial heterogeneity.
Min Zhu   +3 more
doaj   +1 more source

Numerical Study on Single-Bubble Contraction–Rebound Characteristics in Cryogenic Fluids

open access: yesApplied Sciences, 2022
In cryogenic fluid storage and delivery, the rapid contraction and rebound of bubbles are prone to occur during bubble collapse due to the pressure saltation.
Shaohang Yan   +7 more
doaj   +1 more source

Energy Harvesting in a System with a Two-Stage Flexible Cantilever Beam

open access: yesSensors, 2022
The subject of the research contained in this paper is a new design solution for an energy harvesting system resulting from the combination of a quasi-zero-stiffness energy harvester and a two-stage flexible cantilever beam.
Jerzy Margielewicz   +4 more
doaj   +1 more source

Evidence for Solar Modulation on the Millennial-Scale Climate Change of Earth

open access: yesUniverse, 2020
In this study, we use available reconstructed data to investigate periodicities of solar activity (i.e., sunspot number) and the Earth’s climate change (temperatures of Lake Qinghai in China and Vostok in Antarctica, the GISP δ18O climate record of ...
Xinhua Zhao   +2 more
doaj   +1 more source

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