Relevant bibliographies by topics / Autocatalytic

Academic literature on the topic 'Autocatalytic'

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Published: 4 June 2021
Last updated: 20 February 2023

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Journal articles on the topic "Autocatalytic"

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Blokhuis, Alex, David Lacoste, and Philippe Nghe. "Universal motifs and the diversity of autocatalytic systems." Proceedings of the National Academy of Sciences 117, no. 41 (September 28, 2020): 25230–36. http://dx.doi.org/10.1073/pnas.2013527117.

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Autocatalysis is essential for the origin of life and chemical evolution. However, the lack of a unified framework so far prevents a systematic study of autocatalysis. Here, we derive, from basic principles, general stoichiometric conditions for catalysis and autocatalysis in chemical reaction networks. This allows for a classification of minimal autocatalytic motifs called cores. While all known autocatalytic systems indeed contain minimal motifs, the classification also reveals hitherto unidentified motifs. We further examine conditions for kinetic viability of such networks, which depends on the autocatalytic motifs they contain and is notably increased by internal catalytic cycles. Finally, we show how this framework extends the range of conceivable autocatalytic systems, by applying our stoichiometric and kinetic analysis to autocatalysis emerging from coupled compartments. The unified approach to autocatalysis presented in this work lays a foundation toward the building of a systems-level theory of chemical evolution.
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Fedotov, Vladislav Kh, Nikolay I. Kol'tsov, and Petr M. Kosianov. "INFLUENCE OF THE AUTOCATALYTIC STAGES ON THE DYNAMICS OF CONJUGATED CHEMICAL REACTIONS." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 63, no. 2 (February 8, 2020): 14–20. http://dx.doi.org/10.6060/ivkkt.20206302.6053.

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Chemical reactions occurring on nonlinear mechanisms, containing the stage of interaction of various reagents (feedback), can exhibit unusual kinetic properties - the multiplicity of equilibria (hysteresis of different shape dependency on the «velocity-parameter»), change the time of the motion to the equilibrium (slow or fast relaxation), sustained oscillations (regular, irregular), etc. All these critical phenomena are usually associated with the appearance of unstable equilibria in the reactions under study. From the kinetic point of view, one of the main causes of instability is the presence of autocatalytic stages in the reaction mechanism. Therefore, it is interesting to study the effect of autocatalytic stages on the kinetics of chemical reactions, especially far from equilibrium. In this regard, the dynamic characteristics of typical conjugate reactions occurring by non-autocatalytic and autocatalytic mechanisms in an isothermal reactor of ideal mixing under the same conditions are compared in this paper. It is shown that the kinetics of these reactions is different: autocatalysis can shift the equilibrium, change the relaxation time and the rate of reactions. In an irreversible consecutive reaction (far from equilibrium) autocatalysis shifts the equilibrium in the direction of increasing the proportion occupied by the surface of the catalyst and the reaction rate dominated by positive autocatalysis. As the reversible processes increase, the balance shifts to the other side, the reaction slows down and autoinhibition begins to prevail. In parallel conjugate reactions, negative autocatalysis is not observed. In both types of the considered conjugate reactions, the maximum positive change in concentrations and velocity due to autocatalysis observed when these reactions are irreversible.
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Qi, Yuanwei, and Yi Zhu. "Computational Study of Traveling Wave Solutions of Isothermal Chemical Systems." Communications in Computational Physics 19, no. 5 (May 2016): 1461–72. http://dx.doi.org/10.4208/cicp.scpde14.38s.

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AbstractThis article studies propagating traveling waves in a class of reaction-diffusion systems which model isothermal autocatalytic chemical reactions as well as microbial growth and competition in a flow reactor. In the context of isothermal autocatalytic systems, two different cases will be studied. The first is autocatalytic chemical reaction of order m without decay. The second is chemical reaction of order m with a decay of order n, where m and n are positive integers and m>n≥1. A typical system in autocatalysis is A+2B→3B and B→C involving two chemical species, a reactant A and an auto-catalyst B and C an inert chemical species.The numerical computation gives more accurate estimates on minimum speed of traveling waves for autocatalytic reaction without decay, providing useful insight in the study of stability of traveling waves.For autocatalytic reaction of order m = 2 with linear decay n = 1, which has a particular important role in chemical waves, it is shown numerically that there exist multiple traveling waves with 1, 2 and 3 peaks with certain choices of parameters.
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Kumar, Rajeev, Zening Liu, Brad Lokitz, Jihua Chen, Jan-Michael Carrillo, Jacek Jakowski, C. Patrick Collier, Scott Retterer, and Rigoberto Advincula. "Harnessing autocatalytic reactions in polymerization and depolymerization." MRS Communications 11, no. 4 (July 12, 2021): 377–90. http://dx.doi.org/10.1557/s43579-021-00061-9.

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Abstract Autocatalysis and its relevance to various polymeric systems are discussed by taking inspiration from biology. A number of research directions related to synthesis, characterization, and multi-scale modeling are discussed in order to harness autocatalytic reactions in a useful manner for different applications ranging from chemical upcycling of polymers (depolymerization and reconstruction after depolymerization), self-generating micelles and vesicles, and polymer membranes. Overall, a concerted effort involving in situ experiments, multi-scale modeling, and machine learning algorithms is proposed to understand the mechanisms of physical and chemical autocatalysis. It is argued that a control of the autocatalytic behavior in polymeric systems can revolutionize areas such as kinetic control of the self-assembly of polymeric materials, synthesis of self-healing and self-immolative polymers, as next generation of materials for a sustainable circular economy. Graphic Abstract
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Skorb, Ekaterina V., and Sergey N. Semenov. "Mathematical Analysis of a Prototypical Autocatalytic Reaction Network." Life 9, no. 2 (May 20, 2019): 42. http://dx.doi.org/10.3390/life9020042.

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Network autocatalysis, which is autocatalysis whereby a catalyst is not directly produced in a catalytic cycle, is likely to be more common in chemistry than direct autocatalysis is. Nevertheless, the kinetics of autocatalytic networks often does not exactly follow simple quadratic or cubic rate laws and largely depends on the structure of the network. In this article, we analyzed one of the simplest and most chemically plausible autocatalytic networks where a catalytic cycle is coupled to an ancillary reaction that produces the catalyst. We analytically analyzed deviations in the kinetics of this network from its exponential growth and numerically studied the competition between two networks for common substrates. Our results showed that when quasi-steady-state approximation is applicable for at least one of the components, the deviation from the exponential growth is small. Numerical simulations showed that competition between networks results in the mutual exclusion of autocatalysts; however, the presence of a substantial noncatalytic conversion of substrates will create broad regions where autocatalysts can coexist. Thus, we should avoid the accumulation of intermediates and the noncatalytic conversion of the substrate when designing experimental systems that need autocatalysis as a source of positive feedback or as a source of evolutionary pressure.
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Plasson, Raphaël, Axel Brandenburg, Ludovic Jullien, and Hugues Bersini. "Autocatalysis: At the Root of Self-Replication." Artificial Life 17, no. 3 (July 2011): 219–36. http://dx.doi.org/10.1162/artl_a_00033.

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Autocatalysis is a fundamental concept, used in a wide range of domains. From its most general definition, that is, a process in which a chemical compound is able to catalyze its own formation, several different systems can be described. We detail the different categories of autocatalyses, and compare them on the basis of their mechanistic, kinetic, and dynamic properties. It is shown how autocatalytic patterns can be generated by different systems of chemical reactions. The notion of autocatalysis covers a large variety of mechanistic realizations with very similar behaviors; it is proposed that its key signature is its kinetic pattern expressed in a mathematical form. This notion, while describing dynamic behaviors at the most fundamental level, is at the basis for developing higher-level concepts towards life: autocatalytic sets, and autopoietic systems.
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Baier, Gerold, and Sven Sahle. "Spatio-temporal patterns with hyperchaotic dynamics in diffusively coupled biochemical oscillators." Discrete Dynamics in Nature and Society 1, no. 2 (1997): 161–67. http://dx.doi.org/10.1155/s1026022697000162.

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We present three examples how complex spatio-temporal patterns can be linked to hyperchaotic attractors in dynamical systems consisting of nonlinear biochemical oscillators coupled linearly with diffusion terms. The systems involved are: (a) a two-variable oscillator with two consecutive autocatalytic reactions derived from the Lotka–Volterra scheme; (b) a minimal two-variable oscillator with one first-order autocatalytic reaction; (c) a three-variable oscillator with first-order feedback lacking autocatalysis. The dynamics of a finite number of coupled biochemical oscillators may account for complex patterns in compartmentalized living systems like cells or tissue, and may be tested experimentally in coupled microreactors.
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Ribó, Josep M., and David Hochberg. "Spontaneous mirror symmetry breaking: an entropy production survey of the racemate instability and the emergence of stable scalemic stationary states." Physical Chemistry Chemical Physics 22, no. 25 (2020): 14013–25. http://dx.doi.org/10.1039/d0cp02280b.

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Stability of non-equilibrium stationary states and spontaneous mirror symmetry breaking, provoked by the destabilization of the racemic thermodynamic branch, is studied for enantioselective autocatalysis in an open flow system, and for a continuous range n of autocatalytic orders.
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Canepa, Carlo. "The role of autocatalysis on the chemical diversity of the prebiotic ocean of early Earth." International Journal of Astrobiology 15, no. 1 (May 5, 2015): 57–64. http://dx.doi.org/10.1017/s1473550415000099.

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AbstractThe spontaneous formation of catalytic polypeptides of various lengths in a primordial ocean endowed with a source of amino acids from micrometeorites was investigated and found to be sufficient to induce the transformation of potential substrates under the assumption of a high propensity of the environment to catalyse the formation of the peptide bond. This work aims to include in this picture the effect of autocatalysis, i.e. the ability of a polypeptide with a specific length to promote the formation of the peptide bond. Once the formation of an autocatalytic species is attained, the concentrations of the polypeptides, substrates and products of reaction exhibit a time-dependent rate of formation and undergo a catastrophic change. While in the absence of autocatalysis the concentrations of polypeptides are stationary and the formation of reaction products is limited by the proper frequency λ, autocatalysis induces a steady growth of the concentrations of polypeptides and a 100 − 105-fold increase of reaction products at t = ω−1<0.46 Gyr, with a subsequent linear growth in time according to the law u/z0 = 1+s(ω−1+t)/z0, provided the autocatalytic species be active with length fewer than 70 amino acid units. A relationship was found between the catalytic ability of the environment (expressed by the ratio η/ηh of the rate coefficient for peptide bond formation to the corresponding rate coefficient for hydrolysis) and the time of the sharp increase of the concentration of both the polypeptides and their products of transformation. Although the formation of autocatalytic polypeptides is able to rapidly induce a sharp increase in the concentration of both polypeptides and their products of transformation, the crucial formation of the first autocatalytic polypeptides relies on the ability of the environment to promote the formation of the peptide bond. The value of the ratio η/ηh, constrained by the available time for chemical evolution to values bordering the catalytic activity of present-day enzymes, suggests that the correlation between the presence of water and the formation of a complex chemistry should be taken with caution.
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Xu, Zhongmin, Guodong Cheng, Robert E. Ulanowicz, Xiaoyu Song, Xiaohong Deng, and Fanglei Zhong. "The common developmental road: tensions among centripetal and centrifugal dynamics." National Science Review 5, no. 3 (April 4, 2017): 417–26. http://dx.doi.org/10.1093/nsr/nwx033.

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Abstract Western thought since the Enlightenment has been predominantly linear in scope, while Eastern philosophy has focused mostly on the cyclical. Recent advances in complex systems, however, have highlighted the importance of cycles in nature, thereby opening an avenue for new common endeavors. This analysis centers on the role of autocatalytic loops and addresses the evolutionary relationship between competition and cooperation. It posits an evolutionary chain running from individual competition, to individual cooperation, to collective competition, to deep cooperation. We identify the centripetality that is consequent to autocatalysis and define three types of centrifugalities. Development is defined in the context of the tension between these opposing directions. Finally, we propose an evolutionary process consisting of four stages: (i) autognosis, (ii) autocatalytic loop formation, (iii) self-control and (iv) self-realization (sensu Taoism). The developmental narrative promises to become a useful tool for facilitating communication between Eastern and Western cultures.
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Dissertations / Theses on the topic "Autocatalytic"

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Izzard, Michael. "Autocatalytic deposition of composite coatings." Thesis, Aston University, 1987. http://publications.aston.ac.uk/11907/.

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The deposition and properties of electroless nickel composite coatings containing graphite, PTFE and chromium were investigated. Solutions were developed for the codeposition of graphite and chromium with electroless nickel. Solutions for the deposition of graphite contained heavy metal ions for stability, with non-ionic and anionic surfactants to provide wetting and dispersion of the particles. Stability for the codeposition of chromium particles was achieved by oxidation of the chromium. Thin oxide layers of 200 nm thick prevented initiation of the electroless reaction onto the chromium. A mechanism for the formation of electroless composite coatings was considered based on the physical adsorption of particles and as a function of the adsorption of charged surfactants and metal cations from solution. The influence of variables such as particle concentration in solution, particle size, temperature, pH, and agitation on the volume percentage of particles codeposited was studied. The volume percentage of graphite codeposited was found to increase with concentration in solution and playing rate. An increase in particle size and agitation reduced the volume percentage codeposited. The hardness of nickel-graphite deposits was found to decrease with graphite content in the as-deposited and heat treated condition. The frictional and wear properties of electroless nickel-graphite were studied and compared to those of electroless nickel-PTFE. The self-lubricating nature of both coatings was found to be dependent on the ratio of coated area to uncoated area, the size and content of lubricating material in the deposit, and the load between contacting surfaces. The mechanism of self-lubrication was considered, concluding that graphite only produced an initial lubricating surface due to the orientation of flakes, unlike PTFE, which produced true self-lubrication throughout the coating life. Heat treatment of electroless nickel chromium deposits at 850oC for 8 and 16 hours produced nickel-iron-chromium alloy deposits with a phosphorus rich surface of high hardness. Coefficients of friction and wear rates were intially moderate for the phosphorus rich layer but increased for the nickel-iron-chromium region of the coating.
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Sullivan, Anne M. "Autocatalytic electroless gold deposition at low pH." Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/10079.

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Agliari, Elena, Raffaella Burioni, Davide Cassi, and Franco M. Neri. "Autocatalytic reaction-diffusion processes in restricted geometries." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-192966.

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Agliari, Elena, Raffaella Burioni, Davide Cassi, and Franco M. Neri. "Autocatalytic reaction-diffusion processes in restricted geometries." Diffusion fundamentals 7 (2007) 1, S. 1-8, 2007. https://ul.qucosa.de/id/qucosa%3A14157.

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Arsene, Simon. "Pre-evolutionary dynamics in autocatalytic RNA networks." Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCC156/document.

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Les réseaux de molécules interdépendantes sont depuis quelque temps considérés comme de potentiels candidats pour avoir amorcé la transition de la biologie à la chimie. Bien qu'ils aient été intensivement examinés en théorie, il n'existe toujours aucune preuve expérimentale pour confirmer ou infirmer leur supposé rôle crucial dans les origines de la vie. En particulier, il nous manque encore une démonstration empirique des trois ingrédients habituellement présentés comme requis pour l'évolution darwinienne: l'hérédité, la variation et la sélection. Un système qui posséderait les trois tout en étant couplé à un processus de réplication en compartiments serait théoriquement capable d’évoluer au sens darwinien du terme. Par exemple, cela a été montré théoriquement pour les Ensembles Collectivement Autocatalytiques (CAS pour Collectively Aucatalytic Sets en anglais) où chaque molécule de l'ensemble est formée catalytiquement par un autre membre de l'ensemble. Ici, nous utilisons le système de ribozyme Azoarcus, qui catalysent des réactions de recombinaisons, pour former expérimentalement des CASs structurellement divers afin d’explorer leurs propriétés évolutives. Dans ce système, les ribozymes peuvent catalyser la formation d'autres ribozymes à partir de fragments plus petits, présents dans l'environnement. Nous utilisons un dispositif de microfluidique en gouttes associé au séquençage haut-débit pour mener une étude à grande échelle sur des milliers de CASs Azoarcus. Nous développons une approche perturbative pour identifier les paramètres topologiques importants contrôlant les variations observées dans les CAS à la suite de perturbations de l’environnement, ici l'ajout d'une nouvelle espèce. Nous déterminons ensuite l’ensemble restreint de caractéristiques du réseau régissant la mémoire des conditions initiales dans les CASs Azoarcus, un prérequis pour l'hérédité, en utilisant un modèle théorique validé par des données expérimentales. Enfin, nous démontrons qu’il existe dans les CASs Azoarcus des processus cataboliques qui les rendent robustes aux perturbations des fragments qui composent leur substrat et donc plus pertinent d’un point de vue prébiotique. Ces résultats démontrent le rôle crucial des CASs à base d’ARN dans les origines de la vie et illustrent comment la structure de leur réseau peut être adaptée pour obtenir des CASs avec des propriétés intéressantes d’un point de vue évolutif, ouvrant la voie à une démonstration expérimentale de l'évolution darwinienne avec système purement moléculaire
Networks of interdependent molecules are considered plausible candidates for initiating the transition from biology to chemistry. Though they have been intensively scrutinized theoretically, there is still no experimental evidence for confirming or denying their supposed crucial role in the origins of life. In particular, we are still lacking experimental proofs of any of the three ingredients usually presented as required for Darwinian evolution: heredity, variation and selection. A system that would possess the three while being coupled to some sort of encapsulated replication process would theoretically be able to undergo Darwinian evolution. As a matter of fact, this has been shown theoretically for Collectively Autocatalytic Sets (CAS) where each molecule of the set is catalytically formed by another member of the ensemble. Here we use the Azoarcus recombination ribozyme system to experimentally form structurally diverse CASs to explore their evolutionary properties. In this system, the ribozymes can catalyze the assembly of other ribozymes from smaller fragments, present in the food set. We first use a droplet microfluidics set-up coupled with next-generation sequencing to conduct a large scale study on thousands of Azoarcus CASs. We develop a perturbative approach to identify the important topological parameters that control variations in CASs as a result of environmental perturbations, here the addition of a new species. We then determine the small set of network features governing memory of the initial conditions in Azoarcus CAS, a pre-requisite for heredity, by using a computational model validated by experimental data. Finally, we demonstrate that Azoarcus CAS possess catabolic processes which make them robust to perturbations in the food set and thus more prebiotic relevant. These results provide evidence for the crucial role of RNA CASs in the origins of life and illustrate how the network structure can be tailored to obtain CASs with properties interesting from an evolutionary point of view, paving the way to an experimental demonstration of Darwinian evolution with a purely molecular system
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Eden-Jones, Kym Denys. "Kinetic Monte Carlo simulations of autocatalytic protein aggregation." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/9365.

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The self-assembly of proteins into filamentous structures underpins many aspects of biology, from dynamic cell scaffolding proteins such as actin, to the amyloid plaques responsible for a number of degenerative diseases. Typically, these self-assembly processes have been treated as nucleated, reversible polymerisation reactions, where dynamic fluctuations in a population of monomers eventually overcome an energy barrier, forming a stable aggregate that can then grow and shrink by the addition and loss of more protein from its ends. The nucleated, reversible polymerisation framework is very successful in describing a variety of protein systems such as the cell scaffolds actin and tubulin, and the aggregation of haemoglobin. Historically, amyloid fibrils were also thought to be described by this model, but measurements of their aggregation kinetics failed to match the model's predictions. Instead, recent work indicates that autocatalytic polymerisation - a process by which the number of growth competent species is increased through secondary nucleation, in proportion to the amount already present - is better at describing their formation. In this thesis, I will extend the predictions made in this mean-field, autocatalytic polymerisation model through use of kinetic Monte Carlo simulations. The ubiquitous sigmoid-like growth curve of amyloid fibril formation often possesses a notable quiescent lag phase which has been variously attributed to primary and secondary nucleation processes. Substantial variability in the length of this lag phase is often seen in replicate experimental growth curves, and naively may be attributed to fluctuations in one or both of these nucleation processes. By comparing analytic waiting-time distributions, to those produced by kinetic Monte Carlo simulation of the processes thought to be involved, I will demonstrate that this cannot be the case in sample volumes comparable with typical laboratory experiments. Experimentally, the length of the lag phase, or "lag time", is often found to scale with the total protein concentration, according to a power law with exponent γ. The models of nucleated polymerisation and autocatalytic polymerisation predict different values for this scaling exponent, and these are sometimes used to identify which of the models best describes a given protein system. I show that this approach is likely to result in a misidentification of the dominant mechanisms under conditions where the lag phase is dominated by a different process to the rest of the growth curve. Furthermore, I demonstrate that a change of the dominant mechanism associated with total protein concentration will produce "kinks" in the scaling of lag time with total protein concentration, and that these may be used to greater effect in identifying the dominant mechanisms from experimental kinetic data. Experimental data for bovine insulin aggregation, which is well described by the autocatalytic polymerisation model for low total protein concentrations, displays an intriguing departure from the predicted behaviour at higher protein concentrations. Additionally, the protein concentration at which the transition occurs, appears to be affected by the presence of salt. Coincident with this, an apparent change in the fibril structure indicates that different aggregation mechanisms may operate at different total protein concentrations. I demonstrate that a transition whereby the self-assembly mechanisms change once a critical concentration of fibrils or fibrillar protein is reached, can explain the observed behaviour and that this predicts a substantially higher abundance of shorter laments - which are thought to be pathogenic - at lower total protein concentrations than if self-assembly were consistently autocatalytic at all protein concentration. Amyloid-like loops have been observed in electron and atomic-force microscographs, together with non-looped fibrils, for a number of different proteins including ovalbumin. This implies that fibrils formed of these proteins are able to grow by fibrillar end-joining, and not only monomer addition as is more commonly assumed. I develop a simple analytic expression for polymerisation by monomer addition and fibrillar end-joining, (without autocatalysis) and show that this is not sufficient to explain the growth curves obtained experimentally for ovalbumin. I then demonstrate that the same data can be explained by combining fibrillar end-joining and fragmentation. Through the use of an analytic expression, I estimate the kinetic rates from the experimental growth curves and, via simulation, investigate the distribution of lament and loop lengths. Together, my findings demonstrate the relative importance of different molecular mechanisms in amyloid fibril formation, how these might be affected by various environmental parameters, and characteristic behaviour by which their involvement might be detected experimentally.
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Evans, Robert. "The effect of magnetic fields on autocatalytic chemical reactions." Thesis, University of Oxford, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.444929.

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Quaranta, Michela. "Mechanistic study of asymmetric amplification in the Soai autocatalytic reaction." Thesis, Imperial College London, 2010. http://hdl.handle.net/10044/1/6202.

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Soai’s discovery of chiral amplification in the autocatalytic alkylation of pyrimidine-5-carbaldehyde with diisopropylzinc is one of the most noteworthy findings of the last decade of the 20th century. This is the first experimental confirmation of an early theoretical rationalisation of autocatalysis as a mechanism for the evolution of biological homochirality from a racemic environment (Frank, 1953). This thesis describes kinetic and spectroscopic investigations that were conducted with the aim of better understanding the mechanism under which chiral amplification is achieved in the Soai system. The methodology used to perform the kinetic studies that are presented in this thesis focuses on the use of reaction calorimetry as in-situ tool coupled with the appropriate analytical technique for enantiomeric excess measurements. Observations of an unusual temperature effect on the reaction rate and a profound induction period are reported together with extensive kinetic investigations. Kinetic experiments were designed and carried out following Reaction Progress Kinetic Analysis methodology, which is described in detail. These experiments were carried out in order to ascertain the concentration dependence of the substrates and the reaction product, and revealed a 1.6 order in pyrimidyl aldehyde, a zero order in diisopropylzinc and a first order in the reaction product. Meticulous NMR studies of the alkoxide product at low temperature demonstrated its tendency to form tetrameric complexes, which could be either directly involved in the autocatalysis or be the precursors of the active catalytic species. Possible mechanisms that involve tetramers formation are proposed and supported by simulations carried out using COPASI simulation software. This thesis also includes a separate Chapter on the MIB mediated alkylation of benzaldehyde with diethylzinc, a system characterised by a marked nonlinear effect. Kinetic studies demonstrate how the high degree of chiral amplification comes at the expense of the reaction rate.
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Al-Mannai, Muna. "Finite-difference methods for some non-linear reaction-diffusion systems in chemistry." Thesis, Brunel University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390219.

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Baer, Brian R. "Autocatalytic mechanism and functional consequences of covalent heme attachment in CYP4B1 /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/8176.

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Books on the topic "Autocatalytic"

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Izzard, Michael. Autocatalytic deposition of composite coatings. Birmingham: Aston University. Department of Mechanical and Production Engineering, 1987.

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Zi cui hua qi xiang sheng zhang yu yi wei na mi jie gou. Beijing: Ke xue chu ban she, 2013.

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service), SpringerLink (Online, ed. Amplification of chirality. Berlin: Springer, 2008.

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Billlingham, John. Travelling waves and clock reactions in quadratic and cubic autocatalysis. Norwich: University of East Anglia, 1991.

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A, Malliakos, U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Systems Technology., and Sandia National Laboratories, eds. Performance testing of passive autocatalytic recombiners. Washington, DC: Division of Systems Technology, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1998.

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Seaborg, David. Organisms Amplify Diversity: An Autocatalytic Hypothesis. Taylor & Francis Group, 2023.

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Seaborg, David. Organisms Amplify Diversity: An Autocatalytic Hypothesis. Taylor & Francis Group, 2023.

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A, Malliakos, U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Systems Technology., and Sandia National Laboratories, eds. Performance testing of passive autocatalytic recombiners. Washington, DC: Division of Systems Technology, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1998.

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Seaborg, David. Organisms Amplify Diversity: An Autocatalytic Hypothesis. Taylor & Francis Group, 2023.

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Padgett, John F. The Emergence of Organizations and States. Edited by Jennifer Nicoll Victor, Alexander H. Montgomery, and Mark Lubell. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780190228217.013.2.

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Organizations and states emerge, exist, and evolve through dynamic processes operating across multiple network domains (e.g., political, economic, kinship, religion, and war). Autocatalytic networks—sets of nodes that reproduce themselves through ties—create and sustain organizations, but also contain the seeds of their evolution and destruction. Change occurs through novelty, which can take the form of innovation (transposition of ties or feedback among network domains) or invention (when innovation spills over to alter organizations across an entire domain). Equilibrium (through autocatalysis) and change (through novelty) are not different phenomena in this process-oriented view; they are distinct moments in the same underlying cycle. This chapter first develops a multiple-network perspective about the emergence of organizational novelty and autocatalysis, then applies this perspective to the comparative analysis of communist reform transitions in the Soviet Union under Stalin and Gorbachev, and in China under Mao and Deng Xiaoping.
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Book chapters on the topic "Autocatalytic"

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Gooch, Jan W. "Autocatalytic." In Encyclopedic Dictionary of Polymers, 876. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_13197.

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Gooch, Jan W. "Autocatalytic Degradation." In Encyclopedic Dictionary of Polymers, 56. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_905.

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Summerbell, Dennis. "Retinoic Acid: An Autocatalytic Morphogen." In Experimental and Theoretical Advances in Biological Pattern Formation, 339–44. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-2433-5_29.

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Mamat, Siti Salwana, Tahir Ahmad, Siti Rahmah Awang, and Muhammad Zilullah Mukaram. "Ranking by Fuzzy Weak Autocatalytic Set." In Communications in Computer and Information Science, 161–72. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-3441-2_13.

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Giver, Lori, Susan Lato, and Andrew Ellington. "Models for the Autocatalytic Replication of RNA." In Self-Production of Supramolecular Structures, 137–46. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0754-9_12.

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Gabora, Liane, and Mike Steel. "From Uncertainty to Insight: An Autocatalytic Framework." In Uncertainty: A Catalyst for Creativity, Learning and Development, 125–56. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-98729-9_8.

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Shnerb, Nadav. "Adaptation of Autocatalytic Reactants to Discrete Catalysts." In Continuum Models and Discrete Systems, 295. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-1-4020-2316-3_49.

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Buhse, Thomas, María E. Noble-Terán, David Hochberg, Josep M. Ribó, and Jean-claude Micheau. "Chapter 7. Spontaneous Emergence of Chirality in Autocatalytic Cycle Models of the Soai Reaction." In Asymmetric Autocatalysis, 129–55. Cambridge: Royal Society of Chemistry, 2022. http://dx.doi.org/10.1039/9781839166273-00129.

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Wächtershäuser, Günter. "Origin of Life: RNA World Versus Autocatalytic Anabolist." In The Prokaryotes, 81–88. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-30194-0_12.

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Jain, Sanjay, and Sandeep Krishna. "Graph theory and the evolution of autocatalytic networks." In Handbook of Graphs and Networks, 355–95. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2004. http://dx.doi.org/10.1002/3527602755.ch16.

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Conference papers on the topic "Autocatalytic"

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Nawaz, Rab, Shahid Waqas Khan, and Kamran Rasheed Qureshi. "CFD Analysis of Passive Autocatalytic Recombiners." In 2018 International Conference on Power Generation Systems and Renewable Energy Technologies (PGSRET). IEEE, 2018. http://dx.doi.org/10.1109/pgsret.2018.8685945.

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Kuklja, M. M., Sergey N. Rashkeev, Mark Elert, Michael D. Furnish, William W. Anderson, William G. Proud, and William T. Butler. "AUTOCATALYTIC DECOMPOSITION AT SHEAR-STRAIN INTERFACES." In SHOCK COMPRESSION OF CONDENSED MATTER 2009: Proceedings of the American Physical Society Topical Group on Shock Compression of Condensed Matter. AIP, 2009. http://dx.doi.org/10.1063/1.3295145.

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Buzi, Gentian, and John Doyle. "Topological tradeoffs in autocatalytic metabolic pathways." In 2010 49th IEEE Conference on Decision and Control (CDC). IEEE, 2010. http://dx.doi.org/10.1109/cdc.2010.5717490.

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Gordon-Smith, Chris. "SimSoup: Molecules Designed for Switchable Autocatalytic Memory." In European Conference on Artificial Life 2013. MIT Press, 2013. http://dx.doi.org/10.7551/978-0-262-31709-2-ch189.

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He, Hong, and Sheng-zhong Yuan. "Autocatalytic-Based Service Locating Algorithm on Grid." In 2008 Fifth International Conference on Fuzzy Systems and Knowledge Discovery (FSKD). IEEE, 2008. http://dx.doi.org/10.1109/fskd.2008.147.

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Buzi, Gentian, Ufuk Topcu, and John C. Doyle. "Compositional analysis of autocatalytic networks in biology." In 2010 American Control Conference (ACC 2010). IEEE, 2010. http://dx.doi.org/10.1109/acc.2010.5531233.

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Motee, Nader, Fiona Chandra, Bassam Bamieh, Mustafa Khammash, and John C. Doyle. "Performance limitations in autocatalytic networks in biology." In 2010 49th IEEE Conference on Decision and Control (CDC). IEEE, 2010. http://dx.doi.org/10.1109/cdc.2010.5717362.

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Suzuki, Haruki, Taichi Takii, and Shingo Oda. "The Study for Installation of the Autocatalytic Flammability Control System in New ABWR Plants." In 17th International Conference on Nuclear Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/icone17-75836.

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As a measure to prevent the generation of combustible hydrogen/oxygen gases expected in an ABWR accident, a flammability control system (FCS) needs to be installed. The autocatalytic FCS, which has been introduced mainly in Europe and the US, is composed of multiple passive autocatalytic recombiners (PARs) and is capable of recombining hydrogen and oxygen at room temperature (low activation energy) by catalysis. Unlike conventional forced-circulation and heating FCS, the autocatalytic FCS is a passive system that does not need operator startup; it also has a simple structure, without components requiring power supplies, such as blowers and heaters. Thus, it is superior in terms of reliability and operability. This system is considerably smaller than a conventional FCS, and can be installed in portions within the pressure containment vessel (PCV); conventional FCSs are installed inside the reactor building (outside the PCV). So autocatalytic FCS makes it possible to reduce the size of the building, and construction costs as well. Though multiple tests have been performed in Europe and the US on the autocatalytic FCS for product development and to check performance[1],[2],[3],[4], before introducing this FCS to a new ABWR plants, some additional tests have been performed with consideration for Japanese BWR accident conditions like PCV spray, influence of low oxygen condition and reaction inhibition in the collaborative research by Japanese electric power companies. These include examining the influences of low-oxygen conditions and reaction inhibitors. This paper presents the details of additional studies made after considering results of the additional tests performed in Japan to install the autocatalytic FCS instead of the thermo-reactive FCS.
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Schafsteller, B., G. Ramos, K. Tuna, and S. Nelle. "Characterization of thick tin deposits by autocatalytic reaction and electrochemical investigations of autocatalytic tin electrolytes and their reaction mechanisms." In 2019 IEEE CPMT Symposium Japan (ICSJ). IEEE, 2019. http://dx.doi.org/10.1109/icsj47124.2019.8998646.

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Chandra, Fiona A., Gentian Buzi, and John C. Doyle. "Linear control analysis of the autocatalytic glycolysis system." In 2009 American Control Conference. IEEE, 2009. http://dx.doi.org/10.1109/acc.2009.5159925.

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Reports on the topic "Autocatalytic"

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Eberle, C. S., R. C. Singleterry, Jr, K. Olsen, and D. Henderson. A re-examination of the autocatalytic criticality phenomena. Office of Scientific and Technical Information (OSTI), May 1996. http://dx.doi.org/10.2172/229418.

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Anthony H. McDaniel and M. D. Allendorf. The Autocatalytic Behavior of Trimethylindium During Thermal Decomposition. Office of Scientific and Technical Information (OSTI), February 2000. http://dx.doi.org/10.2172/750896.

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Fusion, Joe. The Role of Environmental Dynamics in the Emergence of Autocatalytic Networks. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.2456.

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Hallman, D. F. Input to Resin Column Structural Analysis if Autocatalytic Resin Reaction Occurs in HB-Line Phase II. Office of Scientific and Technical Information (OSTI), July 2001. http://dx.doi.org/10.2172/783009.

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O'Neill, Sharman, Abraham Halevy, and Amihud Borochov. Molecular Genetic Analysis of Pollination-Induced Senescence in Phalaenopsis Orchids. United States Department of Agriculture, 1991. http://dx.doi.org/10.32747/1991.7612837.bard.

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The project investigated the molecular genetic and biochemical basis of pollination-induced senescence of Phalaenopsis flowers. This experimental system offered unique advantages in that senescence is strictly regulated by pollination, providing the basis to experimentally initiate and synchronize senescence in populations of flowers. The postpollination syndrome in the Phalaenopsis orchid system was dissected by investigating the temporal and spatial regulation of ACC synthase gene expression. In the stigma, pollen-borne auxin induces the expression of the auxin-regulated ACC synthase (PS-ACS2) gene, resulting in ACC synthesis within 1 h following pollination. Newly formed ACC is oxidized by basal constitutive ACC oxidase to ethylene, which then induces the expression of the ethylene-regulated ACC synthase(PS-ACS1) and oxidase (ACO1) genes for further autocatalytic production of ethylene. It is speculated that during the 6-h period following pollination, emasculation leads to the production or release of a sensitivity factor that sensitizes the cells of the stigma to ethylene. ACC and ethylene molecules are translocated from the stigma to the labellum and perianth where ethylene induces the expression of PS-ACS1 and ACO1 resulting in an increased production of ACC and ethylene. Organ-localized ethylene is responsible for inrolling and senescence of the labellum and perianth. The regulation of ethylene sensitivity and signal transduction events in pollinated flowers was also investigated. The increase in ethylene sensitivity appeared in both the flower column and the perianth, and was detected as early as 4 h after pollination. The increase in ethylene sensitivity following pollination was not dependent on endogenous ethylene production. Application of linoleic and linoleic acids to Phalaenopsis and Dendrobium flowers enhanced their senescence and promoted ethylene production. Several major lipoxygenase pathway products including JA-ME, traumatic acid, trans-2-hexenal and cis-3-hexenol, also enhanced flower senescence. However, lipoxygenase appears to not be directly involved in the endogenous regulation of pollination-induced Phalaenopsis and Dendrobium flower senescence. The data suggest that short-chain saturated fatty acids may be the ethylene "sensitivity factors" produced following pollination, and that their mode of action involves a decrease in the order of specific regions i the membrane lipid bilayer, consequently altering ethylene action. Examination of potential signal transduction intermediates indicate a direct involvement of GTP-binding proteins, calcium ions and protein phosphorylation in the cellular signal transduction response to ethylene following pollination. Modulations of cytosolic calcium levels allowed us to modify the flowers responsiveness to ethylene.
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Wang, Chi-Jen. Analysis of discrete reaction-diffusion equations for autocatalysis and continuum diffusion equations for transport. Office of Scientific and Technical Information (OSTI), January 2013. http://dx.doi.org/10.2172/1226552.

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