On the support shrinking with a delay phenomenon and on extinction in finite

2021 ◽  
Vol 212 (2) ◽  
Author(s):  
Sergey Petrovich Degtyarev
Keyword(s):  
Delay Phenomenon

Transmissivity to reflectivity change delay phenomenon observed in GeTe thin films at laser-induced reamorphization

2021 ◽  
Vol 143 ◽  
pp. 107305
Author(s):  
A.V. Kiselev ◽  
V.A. Mikhalevsky ◽  
A.A. Burtsev ◽  
V.V. Ionin ◽  
N.N. Eliseev ◽  
...  
Keyword(s):  
Thin Films ◽  
Delay Phenomenon

scholarly journals The Delay Phenomenon

2017 ◽  
Vol 5 (10) ◽  
pp. e1519 ◽  
Author(s):  
Robert P. Gersch ◽  
Mitchell S. Fourman ◽  
Cristina Dracea ◽  
Duc T. Bui ◽  
Alexander B. Dagum
Keyword(s):  
Delay Phenomenon

scholarly journals The venous delay phenomenon in computed tomography angiography: a novel imaging outcome predictor for poor cerebral perfusion after severe aneurysmal subarachnoid hemorrhage

2018 ◽  
Vol 129 (4) ◽  
pp. 876-882 ◽  
Author(s):  
Po-Chuan Hsieh ◽  
Yi-Ming Wu ◽  
Alvin Yi-Chou Wang ◽  
Ching-Chang Chen ◽  
Chien-Hung Chang ◽  
...  
Keyword(s):  
Subarachnoid Hemorrhage ◽  
Cerebral Perfusion ◽  
Aneurysmal Subarachnoid Hemorrhage ◽  
Multivariable Analysis ◽  
Outcome Predictor ◽  
Treatment Results ◽  
Tertiary Referral Center ◽  
Poor Grade ◽  
Poor Outcome ◽  
Delay Phenomenon

OBJECTIVEDiverse treatment results are observed in patients with poor-grade aneurysmal subarachnoid hemorrhage (aSAH). Significant initial perfusion compromise is thought to predict a worse treatment outcome, but this has scant support in the literature. In this cohort study, the authors correlate the treatment outcomes with a novel poor-outcome imaging predictor representing impaired cerebral perfusion on initial CT angiography (CTA).METHODSThe authors reviewed the treatment results of 148 patients with poor-grade aSAH treated at a single tertiary referral center between 2007 and 2016. Patients with the “venous delay” phenomenon on initial CTA were identified. The outcome assessments used the modified Rankin Scale (mRS) at the 3rd month after aSAH. Factors that may have had an impact on outcome were retrospectively analyzed.RESULTSCompared with previously identified outcome predictors, the venous delay phenomenon on initial CTA was found to have the strongest correlation with posttreatment outcomes on both univariable (p < 0.0001) and multivariable analysis (OR 4.480, 95% CI 1.565–12.826; p = 0.0052). Older age and a higher Hunt and Hess grade at presentation were other factors that were associated with poor outcome, defined as an mRS score of 3 to 6.CONCLUSIONSThe venous delay phenomenon on initial CTA can serve as an imaging predictor for worse functional outcome and may aid in decision making when treating patients with poor-grade aSAH.

scholarly journals Limit cycles in models of circular gene networks regulated by negative feedback loops

2020 ◽  
Vol 21 (S11) ◽  
Author(s):  
Vitaly A. Likhoshvai ◽  
Vladimir P. Golubyatnikov ◽  
Tamara M. Khlebodarova
Keyword(s):  
Negative Feedback ◽  
Gene Networks ◽  
Functional Organization ◽  
Molecular Genetic ◽  
Feedback Loops ◽  
System Structure ◽  
Signal Delay ◽  
Negative Feedback Loops ◽  
Regulatory Signal ◽  
Delay Phenomenon

Abstract Background The regulatory feedback loops that present in structural and functional organization of molecular-genetic systems and the phenomenon of the regulatory signal delay, a time period between the moment of signal reception and its implementation, provide natural conditions for complicated dynamic regimes in these systems. The delay phenomenon at the intracellular level is a consequence of the matrix principle of data transmission, implemented through the rather complex processes of transcription and translation.However, the rules of the influence of system structure on system dynamics are not clearly understood. Knowledge of these rules is particularly important for construction of synthetic gene networks with predetermined properties. Results We study dynamical properties of models of simplest circular gene networks regulated by negative feedback mechanisms. We have shown existence and stability of oscillating trajectories (cycles) in these models. Two algorithms of construction and localization of these cycles have been proposed. For one of these models, we have solved an inverse problem of parameters identification. Conclusions The modeling results demonstrate that non-stationary dynamics in the models of circular gene networks with negative feedback loops is achieved by a high degree of non-linearity of the mechanism of the autorepressor influence on its own expression, by the presence of regulatory signal delay, the value of which must exceed a certain critical value, and transcription/translation should be initiated from a sufficiently strong promoter/Shine-Dalgarno site. We believe that the identified patterns are key elements of the oscillating construction design.

Boiling delay phenomenon in a thermosyphon heat sink and its effect on device performance

1994 ◽  
Vol 3 (3) ◽  
pp. 183-186
Author(s):  
Weilin Hu ◽  
Yihui Zhou ◽  
Aijun Wang
Keyword(s):  
Heat Sink ◽  
Device Performance ◽  
Delay Phenomenon
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