Results 111 to 120 of about 207,867 (261)

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Path integral measures and diffeomorphism invariance

open access: yesJournal of High Energy Physics
Much like the action, diffeomorphism invariance can be used to fix the form of the path integral measure in quantum gravity. Moreover, since there is a redundancy between what constitutes “the action” and what constitutes “the measure” one can always ...
Alfio Bonanno   +2 more
doaj   +1 more source

Least-action principle and path-integral for classical mechanics

open access: yes, 2013
In this paper we show how the equations of motion of a superfield, which makes its appearance in a path-integral approach to classical mechanics, can be derived without the need of the least-action ...
A. F. Neto, E. Cattaruzza, GOZZI, ENNIO
core   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

open access: yesFEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

Non-monotone Incentives in a Model of Coexisting Hidden Action and Hidden Information [PDF]

open access: yes
In this paper I consider a model of coexisting moral hazard and adverse selection, similar to one considered by Guesnerie, Picard, and Rey (1989). I provide an explicit solution for the optimal incentive scheme in the case, when the effort is observed ...
Suren Basov
core  

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

open access: yesFEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa   +2 more
wiley   +1 more source

Motion control tuning for time-delayed systems with integral action

open access: yes
Mechatronic systems often present integral actions and time delay. The Smith Predictor scheme is a common way to deal with time delay in control systems.
Oomen, Tom A.E.   +5 more
core   +1 more source

Antagonistic regulation with a unique setpoint, integral and double integral action

open access: yes, 2018
Several biochemical species are in organisms controlled in a pairwise manner i.e., two different species (e.g., hormone, enzyme, transporter protein) work to control the concentration of a third chemical species.
Tormod Drengstig   +2 more
core   +1 more source

PARK(ing) time–How park deficiency affects the biological clock in a Drosophila model of Parkinson's disease

open access: yesFEBS Letters, EarlyView.
Drosophila park mutants serve as a model for Parkinson's disease. We used this strain to investigate the connection between oxidative stress and the circadian clock mechanism. We showed that increased oxidative stress affects the physiology of pacemaker cells, disrupting their daily structural plasticity. Lack of rhythmic signaling from pacemaker cells
Kamila Zientara   +3 more
wiley   +1 more source

General fractional integral operators do not preserve periodicity

open access: yesExamples and Counterexamples
If a periodic real function is differentiable, its derivative is also periodic with the same period. The primitive of a periodic function is periodic if the mean value of the function, over a period, is zero.It is well known that the fractional integral ...
Hamza Al-Shdaifat   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy