Results 41 to 50 of about 26,665,874 (251)

Homogenization for Time-periodic KPP Reactions [PDF]

open access: yes, 2022
We prove homogenization for reaction-advection-diffusion equations with KPP reactions, in the time-periodic spatially stationary ergodic setting, and find an explicit formula for the homogenized dynamic. We also extend this result to models with non-local diffusion and KPP reactions.
arxiv   +1 more source

Effect of handedness on visual, auditory and cutaneous reaction times in normal subjects [PDF]

open access: yesAl Ameen Journal of Medical Sciences, 2013
Background & Objective: Simple reaction time is the time interval between stimulus and response. In this study the impact of handedness on auditory, visual and cutaneous simple reaction time have been investigated. Methods: 100 healthy male volunteers of
Sunita B. Kalyanshetti, B.C. Vastrad
doaj  

Antiepileptic Drugs, Reaction Time, and Impulsivity

open access: yesPediatric Neurology Briefs, 1993
The effects of antiepileptic drugs (AED) on reaction time, attention, and impulsivity in 111 epileptic children, aged 5 to 13 years, are reported from the Children’s Hospital of Los Angeles and University of Southern California School of Medicine.
J Gordon Millichap
doaj   +1 more source

Absolute quantification of mRNA using real-time reverse transcription polymerase chain reaction assays.

open access: yesJournal of Molecular Endocrinology, 2000
The reverse transcription polymerase chain reaction (RT-PCR) is the most sensitive method for the detection of low-abundance mRNA, often obtained from limited tissue samples.
S. Bustin
semanticscholar   +1 more source

Universal kinetics of imperfect reactions in confinement [PDF]

open access: yesarXiv, 2021
Chemical reactions generically require that particles come into contact. In practice, reaction is often imperfect and can necessitate multiple random encounters between reactants. In confined geometries, despite notable recent advances, there is to date no general analytical treatment of such imperfect transport-limited reaction kinetics.
arxiv  

Propagation phenomena for time heterogeneous KPP reaction-diffusion equations [PDF]

open access: yes, 2011
We investigate in this paper propagation phenomena for the heterogeneous reaction-diffusion equation $\partial_t u -\Delta u = f(t,u)$, $x\in R^N$, $t\in\R$, where f=f(t,u) is a KPP monostable nonlinearity which depends in a general way on t. A typical f
Alikakos   +22 more
core   +6 more sources

Reaction Time and Attention in Epilepsy

open access: yesPediatric Neurology Briefs, 1992
Reaction time, attention and impulsivity in 112 children with epilepsy (4.5-13 years) were studied using a computerized test at the Division of Neurology, Children’s Hospital Los Angeles, Los Angeles, CA.
J Gordon Millichap
doaj   +1 more source

The effect of different types of physical activity on cognitive reaction time in older adults in China

open access: yesFrontiers in Public Health, 2022
IntroductionAging is not only reflected in the degeneration of physiological functions but is also embodied in the decline of psychological and cognitive functions.
Yujie Liu   +7 more
doaj   +1 more source

A Query-Response Causal Analysis of Reaction Events in Biochemical Reaction Networks [PDF]

open access: yesarXiv, 2022
The stochastic kinetics of BRN are described by a chemical master equation (CME) and the underlying laws of mass action. The CME must be usually solved numerically by generating enough traces of random reaction events. The resulting event-time series can be evaluated statistically to identify, for example, the reaction clusters, rare reaction events ...
arxiv  

Modelling Chemical Reasoning to Predict Reactions [PDF]

open access: yesChem. Eur. J. 2017, 23, 6118-6128, 2016
The ability to reason beyond established knowledge allows Organic Chemists to solve synthetic problems and to invent novel transformations. Here, we propose a model which mimics chemical reasoning and formalises reaction prediction as finding missing links in a knowledge graph. We have constructed a knowledge graph containing 14.4 million molecules and
arxiv   +1 more source

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