Results 101 to 110 of about 11,944 (302)

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

open access: yesFEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson   +6 more
wiley   +1 more source

Composite Adaptive Antidisturbance Control for Discrete-Time Switched System

open access: yesDiscrete Dynamics in Nature and Society, 2016
A novel composite adaptive antidisturbance controller is developed for a class of discrete-time switched system. First, two composite adaptive observers are proposed to estimate the external disturbances and unknown parameters, respectively.
Haibin Sun, Qiang Lu, Linlin Hou
doaj   +1 more source

Maximal subgroups of prime index in a finite solvable group

open access: yes, 1978
In this note we show that a maximal subgroup of a finite solvable group has prime index if and only if it admits a cyclic supplement which permutes with one of its Sylow systems. In particular, a finite solvable group is supersolvable if and only if each
Paul Venzke
core   +1 more source

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

Breather and Rogue Wave Solutions of a New Three-Component System of Exactly Solvable NLEEs

open access: yesDynamics
We derive a new exactly solvable multi-component system of non-linear evolution equations (NLEEs). The system consists of three 1+1-dimensional evolution equations—one first-order and two second-order in the spatial variable.
Aleksander Stefanov, Stanislav Varbev
doaj   +1 more source

Mid-knot cubic non-polynomial spline for a system of second-order boundary value problems

open access: yesBoundary Value Problems, 2018
In this paper, a mid-knot cubic non-polynomial spline is applied to obtain the numerical solution of a system of second-order boundary value problems. The numerical method is proved to be uniquely solvable and it is of second-order accuracy.
Qinxu Ding, Patricia J. Y. Wong
doaj   +1 more source

Classes of globally solvable involutive systems

open access: yes, 2017
We study a linear operator associated with a real smooth closed non-exact 1-form b defined on a closed orientable surface. Locally the operator can be seen as an overdetermined system of first order linear partial differential equations.
PARMEGGIANI, ALBERTO   +7 more
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

Realization of controllable open system with NMR

open access: yesNew Journal of Physics, 2019
An open quantum system is now attracting much attention because a quantum device such as quantum computers and quantum sensors is an emerging technology. Here, we present a model of the open system that shows either time-homogeneous Markovian relaxations
Le Bin Ho   +3 more
doaj   +1 more source

Exactly solvable quantum Sturm-Liouville problems [PDF]

open access: yes, 2009
The harmonic oscillator with time-dependent parameters covers a broad spectrum of physical problems from quantum transport, quantum optics, and quantum information to cosmology.
Oktay K. Pashaev   +8 more
core   +1 more source

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