Results 11 to 20 of about 4,184,881 (309)

The nature and behavior of unstable variants of tobacco necrosis virus

open access: yesVirology, 1963
Abstract Highly infective preparations of unstable variants of two strains of tobacco necrosis virus were prepared by grinding 1 g of infected leaf in 6 ml of 0.06 M pH 8 phosphate buffer containing 25 mg bentonite per millilitre and centrifuging the extracts at 10,000 rpm.
Kassanis, B., Welkie, G. W.
openaire   +3 more sources

Constitutive material law improvements for metals that manifest an unstable behavior in dynamic condition [PDF]

open access: yes, 2023
Numerical analysis is regularly used in engineering practice as useful mean to study component behavior in service, especially when an experimental campaign is too expensive or not practicable.
Amodio D.   +3 more
core   +1 more source

A Novel Solution for the Elimination of Mode Switching in Pump-Controlled Single-Rod Cylinders

open access: yesActuators, 2020
This paper concerns the stability issue of pump-controlled single-rod cylinders, known as mode switching. First, a review of the topic is provided. Thereafter, the most recently proposed solution for the elimination of mode switching is investigated and ...
Petter H. Gøytil   +2 more
doaj   +1 more source

Unstable neurons underlie a stable learned behavior [PDF]

open access: yesNature Neuroscience, 2016
Motor skills can be maintained for decades, but the biological basis of this memory persistence remains largely unknown. The zebra finch, for example, sings a highly stereotyped song that is stable for years, but it is not known whether the precise neural patterns underlying song are stable or shift from day to day.
Liberti III, William A   +9 more
openaire   +3 more sources

Numerical investigation on unstable behaviors of cellular premixed flames at low Lewis numbers based on the diffusive-thermal model and compressible Navier-Stokes equations

open access: yesJournal of Thermal Science and Technology, 2018
Two dimensional unsteady calculations of reactive flows were performed in large domain to investigate the unstable behaviors of cellular premixed flames at low Lewis numbers based on the diffusive-thermal (D-T) model and compressible Navier-Stokes (N-S ...
Thwe Thwe Aung   +2 more
doaj   +1 more source

Saving behavior of the Russian population in the unstable socioeconomic conditions [PDF]

open access: yesСоциологический журнал, 2013
The article deals with some peculiarities of the saving behavior of the Russian population in terms of socio-economic instability. The materials of socio-economic monitoring of Russian Public Opinion Research Center (VCIOM) are analyzed.
M. S. Scherbal
doaj   +1 more source

Numerical simulation of the behavior of kinematically unstable slopes under dynamic influences

open access: yesAdvanced Engineering Research, 2022
Introduction. The concept of estimating the dynamic parameters of the “base — weakened layer — block” system is proposed, taking into account the physical nonlinearity of the material and the kinematic method of excitation of vibrations.
P. P Gaidzhurov   +2 more
doaj   +1 more source

The Effects of the Activation Energy on the Intrinsic Instability of Adiabatic and Non-Adiabatic Premixed Flames

open access: yesJournal of Fluid Science and Technology, 2008
The effects of the activation energy on the intrinsic instability of adiabatic and non-adiabatic premixed flames were studied by two-dimensional unsteady calculations of reactive flows based on the compressible Navier-Stokes equation.
Amornrat KAEWPRADAP, Satoshi KADOWAKI
doaj   +1 more source

“Himalayan Bridge”: A New Unstable Suspended Bridge to Investigate Rodents' Venturesome Behavior

open access: yesFrontiers in Behavioral Neuroscience, 2021
While both risk-taking and avoidant behaviors are necessary for survival, their imbalanced expression can lead to impulse-control and anxiety disorders, respectively.
Fabiana Festucci   +8 more
doaj   +1 more source

Asymptotic inference for nearly unstable AR(p) processes [PDF]

open access: yes, 1999
In this paper nearly unstable AR( p) processes (in other words, models with characteristic roots near the unit circle) are studied. Our main aim is to describe the asymptotic behavior of the least-squares estimators of the coefficients.
van Zuijlen, Martien C. A.   +2 more
core   +1 more source

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