Results 241 to 250 of about 4,892,908 (297)
Some of the next articles are maybe not open access.
Journal of Theoretical Biology, 2008
Metabolic control analysis (MCA) has become what it is, largely because the special organization of living cells led to rather specific questions. These questions focused on the role of enzymes, genes, and, in subsequent generalizations, on well-defined process activities.
openaire +3 more sources
Metabolic control analysis (MCA) has become what it is, largely because the special organization of living cells led to rather specific questions. These questions focused on the role of enzymes, genes, and, in subsequent generalizations, on well-defined process activities.
openaire +3 more sources
Psychological Reports, 1988
In previous signal-control experiments, several types of stimuli elicited pecking when paired with peck-contingent grain. Here, we compared the effectiveness of an auditory stimulus and five visual stimuli. For 12 pigeons, the first keypeck to follow the offset of a 4-sec. signal was reinforced with grain.
Richard O. Shellenberger, Paul Lewis
openaire +1 more source
In previous signal-control experiments, several types of stimuli elicited pecking when paired with peck-contingent grain. Here, we compared the effectiveness of an auditory stimulus and five visual stimuli. For 12 pigeons, the first keypeck to follow the offset of a 4-sec. signal was reinforced with grain.
Richard O. Shellenberger, Paul Lewis
openaire +1 more source
MicroRNA control of Nodal signalling
Nature, 2007MicroRNAs are crucial modulators of gene expression, yet their involvement as effectors of growth factor signalling is largely unknown. Ligands of the transforming growth factor-beta superfamily are essential for development and adult tissue homeostasis. In early Xenopus embryos, signalling by the transforming growth factor-beta ligand Nodal is crucial
MARTELLO, GRAZIANO +12 more
openaire +2 more sources
Nature Methods, 2013
Molecular assemblies on magnetic nanoparticles enable localized activation of signaling pathways inside cells.
openaire +2 more sources
Molecular assemblies on magnetic nanoparticles enable localized activation of signaling pathways inside cells.
openaire +2 more sources
CONTROLLING CHAOS WITHOUT FEEDBACK AND CONTROL SIGNALS
International Journal of Bifurcation and Chaos, 1993We describe an effective method for controlling chaos by coupling a main chaotic system to a new but simple system with easily changeable parameters. The method is applied to Duffing’s oscillator (numerical and analytical study) and to Chua’s circuit (experimental study).
Kapitaniak, T. +2 more
openaire +1 more source
Controlling Signals, Signal Propagation and Signal Transduction
2014When thousands and billions of cells have to fulfil the task to collectively construct an organism with its complex tissues and organs a manifold of mutual agreements are necessary. Controlling cells, for example organizing centres in early embryos, must emit coordinating signals. In order to respond to the signals cells must have the correct equipment
Werner A. Mueller +2 more
openaire +1 more source
Controlling Immunological Signaling
Science, 2003Activation and nuclear translocation of the immune-response transcription factor nuclear factor-κB (NF-κB) depends on signals that emanate from a variety of cell-surface receptors. Two membrane-proximal caspase-recruitment proteins, CARMA1 and Bcl10, form part of the chain of signaling events, but other critical remaining steps in the ...
openaire +2 more sources
Transactions of the American Institute of Electrical Engineers, Part II: Applications and Industry, 1952
THE PROPOSED AIEE SYMBOLS and definitions for feedback control systems are employed. The term “signal component control” (scc), is used to designate the control method, and the term “scc device” to specify the particular associated equipment. The primary objective of the method is to shape the reference input so either the indirectly or the directly ...
D. J. Gimpel, J. F. Calvert
openaire +1 more source
THE PROPOSED AIEE SYMBOLS and definitions for feedback control systems are employed. The term “signal component control” (scc), is used to designate the control method, and the term “scc device” to specify the particular associated equipment. The primary objective of the method is to shape the reference input so either the indirectly or the directly ...
D. J. Gimpel, J. F. Calvert
openaire +1 more source
The Journal of the Acoustical Society of America, 1986
An electronic signal X can have its envelope shaped by an electronic control signal Y. For music purposes, signal X can be an electronically generated note and control signal Y can be derived from the musician's voice. The signal shape controller exponentially modifies the control signal Y and multiplies signal X by the exponentially modified control ...
openaire +1 more source
An electronic signal X can have its envelope shaped by an electronic control signal Y. For music purposes, signal X can be an electronically generated note and control signal Y can be derived from the musician's voice. The signal shape controller exponentially modifies the control signal Y and multiplies signal X by the exponentially modified control ...
openaire +1 more source
PML control of cytokine signaling
Cytokine & Growth Factor Reviews, 2014The promyelocytic leukemia (PML) protein is a tumor suppressor acting as the organizer of nuclear matrix-associated structures named nuclear bodies (NBs). The involvement of PML in various cell processes, including cell death, senescence or antiviral defense underlines the multiple functions of PML due to its ability to interact with various partners ...
Ghizlane, Maarifi +2 more
openaire +2 more sources