Abstract:
:Spatially extended dynamical systems exhibit complex behaviour in both space and time--spatiotemporal chaos. Analysis of dynamical quantities (such as fractal dimensions and Lyapunov exponents) has provided insights into low-dimensional systems; but it has proven more difficult to understand spatiotemporal chaos in high-dimensional systems, despite abundant data describing its statistical properties. Initial attempts have been made to extend the dynamical approach to higher-dimensional systems, demonstrating numerically that the spatiotemporal chaos in several simple models is extensive (the number of dynamical degrees of freedom scales with the system volume). Here we report a computational investigation of a phenomenon found in nature, 'spiral defect' chaos in Rayleigh-Benard convection, in which we find that the spatiotemporal chaos in this state is extensive and characterized by about a hundred dynamical degrees of freedom. By studying the detailed space-time evolution of the dynamical degrees of freedom, we find that the mechanism for the generation of chaotic disorder is spatially and temporally localized to events associated with the creation and annihilation of defects.
journal_name
Naturejournal_title
Natureauthors
Egolf DA,Melnikov IV IV,Pesch W,Ecke REdoi
10.1038/35008013keywords:
subject
Has Abstractpub_date
2000-04-13 00:00:00pages
733-6issue
6779eissn
0028-0836issn
1476-4687journal_volume
404pub_type
杂志文章相关文献
NATURE文献大全abstract::The Gakkel ridge, which extends under the Arctic ice cap for approximately 1,800 km, is the slowest spreading ocean ridge on Earth. Its spreading created the Eurasian basin, which is isolated from the rest of the oceanic mantle by North America, Eurasia and the Lomonosov ridge. The Gakkel ridge thus provides unique op...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature06919
更新日期:2008-05-01 00:00:00
abstract::Accurate chromosome segregation requires timely dissolution of chromosome cohesion after chromosomes are properly attached to the mitotic spindle. Separase is absolutely essential for cohesion dissolution in organisms from yeast to man. It cleaves the kleisin subunit of cohesin and opens the cohesin ring to allow chro...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature17402
更新日期:2016-04-07 00:00:00
abstract::The type 1 human immunodeficiency virus (HIV-1) contains a conical capsid comprising approximately 1,500 CA protein subunits, which organizes the viral RNA genome for uncoating and replication in a new host cell. In vitro, CA spontaneously assembles into helical tubes and cones that resemble authentic viral capsids. H...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/35030177
更新日期:2000-09-21 00:00:00
abstract::DNA repair by homologous recombination is highly suppressed in G1 cells to ensure that mitotic recombination occurs solely between sister chromatids. Although many homologous recombination factors are cell-cycle regulated, the identity of the events that are both necessary and sufficient to suppress recombination in G...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature16142
更新日期:2015-12-17 00:00:00
abstract::Sudden cardiac death is the leading cause of death in the industrialized world, with the majority of such tragedies being due to ventricular fibrillation. Ventricular fibrillation is a frenzied and irregular disturbance of the heart rhythm that quickly renders the heart incapable of sustaining life. Rotors, electrophy...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/32170
更新日期:1998-03-05 00:00:00
abstract::The thymus has two important roles in controlling the specificity of T lymphocytes. First, T cells differentiating in the thymus are rendered tolerant of 'self' antigens, particularly antigens encoded by the major histocompatibility complex, the H-2 complex in mice. Second, the thymus imbues T cells with the property ...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/319672a0
更新日期:1986-02-20 00:00:00
abstract::Nature's high-performance polymer, spider silk, consists of specific proteins, spidroins, with repetitive segments flanked by conserved non-repetitive domains. Spidroins are stored as a highly concentrated fluid dope. On silk formation, intermolecular interactions between repeat regions are established that provide st...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature08962
更新日期:2010-05-13 00:00:00
abstract::Apoptosis is a highly regulated process that is crucial for normal development and homeostasis of multicellular organisms. The p35 protein from baculoviruses effectively prevents apoptosis by its broad-spectrum caspase inhibition. Here we report the crystal structure of p35 in complex with human caspase-8 at 3.0 A res...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/35068604
更新日期:2001-03-22 00:00:00
abstract::Piwi proteins and Piwi-interacting RNAs (piRNAs) have conserved functions in transposon silencing. The murine Piwi proteins Mili and Miwi2 (also called Piwil2 and Piwil4, respectively) direct epigenetic LINE1 and intracisternal A particle transposon silencing during genome reprogramming in the embryonic male germ line...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature10547
更新日期:2011-10-23 00:00:00
abstract::In the budding yeast Saccharomyces cerevisiae, the process of conjugation of haploid cells of genotype MATa and MAT alpha to form MATa/alpha diploids is triggered by pheromones produced by each mating type. These pheromones stimulate a cellular response by interaction with receptors linked to a heterotrimeric G protei...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/376702a0
更新日期:1995-08-24 00:00:00
abstract::The heat-shock protein Hsp90 supports diverse but specific signal transducers and lies at the interface of several developmental pathways. We report here that when Drosophila Hsp90 is mutant or pharmacologically impaired, phenotypic variation affecting nearly any adult structure is produced, with specific variants dep...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/24550
更新日期:1998-11-26 00:00:00
abstract::The Earth has distinctive convective behaviour, described by the plate tectonics model, in which lateral motion of the oceanic lithosphere of basaltic crust and peridotitic uppermost mantle is decoupled from the underlying mechanically weaker upper mantle (asthenosphere). The reason for differentiation at the lithosph...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature09369
更新日期:2010-09-23 00:00:00
abstract::Molluscs (snails, octopuses, clams and their relatives) have a great disparity of body plans and, among the animals, only arthropods surpass them in species number. This diversity has made Mollusca one of the best-studied groups of animals, yet their evolutionary relationships remain poorly resolved. Open questions ha...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature10526
更新日期:2011-10-26 00:00:00
abstract::Yeast phosphatidylinositol transfer protein (Sec14p) is required for the production of secretory vesicles from the Golgi. This requirement can be relieved by inactivation of the cytosine 5'-diphosphate (CDP)-choline pathway for phosphatidylcholine biosynthesis, indicating that Sec14p is an essential component of a reg...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/387101a0
更新日期:1997-05-01 00:00:00
abstract::The fundus of the guinea-pig stomach actively dilates in response to low increases in intragastric pressure. This physiological response, now called adaptive relaxation, accommodates the intake of liquid or food. It is independent of external innervation, resistant to ganglion blockade, but reflex in origin. The nerve...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/351477a0
更新日期:1991-06-06 00:00:00
abstract::There is a pressing need to develop alternatives to annual influenza vaccines and antiviral agents licensed for mitigating influenza infection. Previous studies reported that acute lung injury caused by chemical or microbial insults is secondary to the generation of host-derived, oxidized phospholipid that potently st...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature12118
更新日期:2013-05-23 00:00:00
abstract::A pathological hallmark of Alzheimer's disease is the deposition of amyloid fibrils in the brain. The principal component of amyloid fibrils is beta/A4 amyloid protein, which can be generated by the aberrant processing of a large membrane-bound glycoprotein, the beta/A4 amyloid protein precursor (APP)3. To test whethe...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/359064a0
更新日期:1992-09-03 00:00:00
abstract::Heritable epigenetic polymorphisms, such as differential cytosine methylation, can underlie phenotypic variation. Moreover, wild strains of the plant Arabidopsis thaliana differ in many epialleles, and these can influence the expression of nearby genes. However, to understand their role in evolution, it is imperative ...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature10555
更新日期:2011-09-20 00:00:00
abstract::We have designed a bacterial system that is switched between different states by red light. The system consists of a synthetic sensor kinase that allows a lawn of bacteria to function as a biological film, such that the projection of a pattern of light on to the bacteria produces a high-definition (about 100 megapixel...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature04405
更新日期:2005-11-24 00:00:00
abstract::Learning through trial-and-error interactions allows animals to adapt innate behavioural ‘rules of thumb’ to the local environment, improving their prospects for survival and reproduction. Naive Drosophila melanogaster males, for example, court both virgin and mated females, but learn through experience to selectively...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature11345
更新日期:2012-09-06 00:00:00
abstract::When mountains form through the collision of lithospheric plates, uplift of the Earth's surface is accompanied by thickening of the crust, and the buoyancy of these deep crustal roots (relative to the surrounding mantle) is thought to contribute to the support of mountain topography. Once active tectonism ceases, cont...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature00855
更新日期:2002-06-27 00:00:00
abstract::Leukaemia inhibitory factor (LIF) has a variety of effects on different cell types in vitro, inhibiting the differentiation of embryonic stem cells and promoting the survival and/or proliferation of primitive haematopoietic precursors and primordial germ cells. Here we show that LIF-deficient mice derived by gene targ...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/363361a0
更新日期:1993-05-27 00:00:00
abstract::Monoclonal antibodies were raised against antibodies to distinct carboxy-terminal KDEL sequences of two soluble, resident endoplasmic reticulum proteins. These anti-idiotype reagents recognize an intrinsic membrane protein with characteristics expected of a receptor responsible for the recognition and return of reside...
journal_title:Nature
pub_type: 杂志文章,收录出版
doi:10.1038/345495a0
更新日期:1990-06-07 00:00:00
abstract::Tectal polarity for retinal connections remains reversible long after the anatomical pattern of neural structures has been determined. Cells in the diencephalon seem to control this polarity. Following certain embryonic operations, the diencephalon developed behind the tectum. In such cases, the polarity of the retino...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/258126a0
更新日期:1975-11-13 00:00:00
abstract::Pollinators are declining worldwide and this has raised concerns for a parallel decline in the essential pollination service they provide to both crops and wild plants. Anthropogenic drivers linked to this decline include habitat changes, intensive agriculture, pesticides, invasive alien species, spread of pathogens a...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature23288
更新日期:2017-08-10 00:00:00
abstract::Inhibition of the TOR signalling pathway by genetic or pharmacological intervention extends lifespan in invertebrates, including yeast, nematodes and fruitflies; however, whether inhibition of mTOR signalling can extend lifespan in a mammalian species was unknown. Here we report that rapamycin, an inhibitor of the mTO...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature08221
更新日期:2009-07-16 00:00:00
abstract::Neurons develop a highly polarized morphology consisting of dendrites and a long axon. Both axons and dendrites contain microtubules and microtubule-associated proteins (MAPs) with characteristic structures. Among MAPs, MAP2 is specifically expressed in dendrites whereas MAP2C and tau are abundant in the axon. But the...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/360674a0
更新日期:1992-12-17 00:00:00
abstract::Cells deficient in the Brca1 and Brca2 genes have reduced capacity to repair DNA double-strand breaks by homologous recombination and consequently are hypersensitive to DNA-damaging agents, including cisplatin and poly(ADP-ribose) polymerase (PARP) inhibitors. Here we show that loss of the MLL3/4 complex protein, PTIP...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature18325
更新日期:2016-07-21 00:00:00
abstract::Megakaryocytopoiesis is the cellular developmental process that leads to platelet production. At least two humoral growth factors may be necessary for megakaryocyte proliferation and maturation. One is a megakaryocyte-colony stimulating factor (MK-CSF) which induces the proliferation and differentiation of megakaryocy...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/369571a0
更新日期:1994-06-16 00:00:00
abstract::Cryptosporidium species cause acute gastroenteritis and diarrhoea worldwide. They are members of the Apicomplexa--protozoan pathogens that invade host cells by using a specialized apical complex and are usually transmitted by an invertebrate vector or intermediate host. In contrast to other Apicomplexans, Cryptosporid...
journal_title:Nature
pub_type: 杂志文章
doi:10.1038/nature02977
更新日期:2004-10-28 00:00:00