Results 101 to 110 of about 207,867 (261)

Integral Ecology Panel

open access: yes, 2012
Integral Ecology panel The gravity and complexity of the global ecological crisis calls for integral approaches to ecology. Such approaches are concerned with the transformation of human conceptual, psychological, and cultural patterns that have become ...
Robbert, Adam   +2 more
core  

The ubiquitin‐proteasome system and autophagy as guardians of the cellular proteome

open access: yesFEBS Letters, EarlyView.
This Perspective covers the three principles governing the crosstalk between the ubiquitin‐proteasome system and autophagy in cellular proteostasis: (1) a shared ubiquitin code routing substrates via shuttle factors or autophagy receptors; (2) spatial compartmentalization into phase‐separated degradation hubs and organelle‐specific modules (exemplified
Ivan Dikic
wiley   +1 more source

How much integral action can a control system tolerate?

open access: yes, 1994
A closed formula is derived for the largest amount of integral action that an integral controllable system can tolerate without losing closed-loop stability. A block- structured guardian-map approach is used. A connection is obtained with the calculation
Mustafa, Denis
core   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

open access: yesFEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Fuzzy Integral and Cuckoo Search Based Classifier Fusion for Human Action Recognition

open access: yesAdvances in Electrical and Computer Engineering, 2018
The human activity recognition is an important issue for sports analysis and health monitoring. The early recognition of human actions is used in areas such as detection of criminal activities, fall detection, and action recognition in rehabilitation ...
AYDIN, I.
doaj   +1 more source

Robust control design with integral action and limited rate control

open access: yes, 1999
In this paper, by means of singular perturbation methods, the authors propose two dynamical feedback controls in order to solve control tracking problems involving sliding manifolds.
DE MARIA, Giuseppe   +5 more
core   +1 more source

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

Equivariance, Variational Principles, and the Feynman Integral

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2008
We argue that the variational calculus leading to Euler's equations and Noether's theorem can be replaced by equivariance and invariance conditions avoiding the action integral.
George Svetlichny
doaj  

A generalized formulation of dual radiation action [PDF]

open access: yes, 1978
Dual radiation action is a process in which cellular lesions are produced as a result of the interaction of pairs of sublesions that are molecular alterations produced by ionizing radiation.Previous formulations of this process have employed a number of ...
Rossi, H. H., Kellerer, Albrecht M.
core  

Electron transfer between complexes III and IV in S. cerevisiae mitochondrial membranes

open access: yesFEBS Letters, EarlyView.
Mitochondrial oxidative phosphorylation in S. cerevisiae mitoplasts is limited by complex IV catalytic capacity, rather than two‐dimensional cytochrome c diffusion. At physiological cytochrome c : supercomplex ratios at salinity equivalent to that of 20 mm monovalent salt, activity is maximized, indicating that this low ionic strength accurately mimics
Ana Paula Lobez   +2 more
wiley   +1 more source

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