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AbstractAbstract
[en] Neutrinos play an essential role in determining the outcome of formation of nuclei in core-collapse supernovae or in the neutrino-driven winds of neutron star mergers. It has been shown in recent years that neutrino oscillations among active flavors or between the active and a possible sterile state may happen in these astrophysical environments to influence the result of nucleosynthesis. We have examined in detail the effect of neutrino oscillations on different nucleosynthesis processes in these astrophysical environments, and the results are discussed.
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DPG Spring meeting of the section on atomic, molecular, and plasma physics and quantum optics (SAMOP) together with the divisions hadronic and nuclear physics, environmental physics and working groups industry business, young DPG; Heidelberg (Germany); 23-27 Mar 2015; Available from http://www.dpg-verhandlungen.de; Session: HK 58.3 Do 17:30; No further information available; Also available as printed version: Verhandlungen der Deutschen Physikalischen Gesellschaft v. 50(4)
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Journal Article
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Conference
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Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195;
; CODEN VDPEAZ; (Heidelberg 2015 issue); [1 p.]

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Mazumdar, Anupam; Sheikh-Jabbari, Mohammad M.
Funding organisation: (United States)
arXiv e-print [ PDF ]2001
Funding organisation: (United States)
arXiv e-print [ PDF ]2001
AbstractAbstract
[en] In this paper we show that noncommutativity in spatial coordinates can generate magnetic field in the early Universe on a horizon scale. The strength of such a magnetic field depends on the number density of massive charged particles present at a given moment. This allows us to trace back the temperature dependence of the noncommutativity scale from the bounds on primordial magnetic field coming from nucleosynthesis
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Source
Othernumber: PRLTAO000087000001011301000001; 047124PRL; The American Physical Society
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Journal Article
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Physical Review Letters; ISSN 0031-9007;
; v. 87(1); p. 011301-011301.4

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AbstractAbstract
[en] A short overview and the present status of charged particle capture reaction measurements by activation method related to p-process are given here.
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International conference on nuclear physics and astrophysics: From stable beams to exotic nuclei; Cappadocia (Turkey); 25-30 Jun 2008; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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AbstractAbstract
[en] The data on the synthesis, structure and chemical transformations of 2-(het)arylhydrazono-1,3-dicarbonyl compounds is surveyed. The synthetic potential and possible applications of the title compounds are analyzed.
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Available from http://dx.doi.org/10.1070/RC2010v079n01ABEH004048; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
Journal
Russian Chemical Reviews (Print); ISSN 0036-021X;
; v. 79(1); p. 31-61

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AbstractAbstract
[en] Experimental evidence on the existence of AB2X4 compounds in A-B-X systems (A and B are any elements of the periodic system, in particular, rare earth elements, X is S or Se) and the data on the properties of elements and simple sulphides (selenides) were used for an attempt to find the probability of formation of AB2X4 compounds as a function of the component properties. The experimental evidence was analyzed by a computer employing algorithms of concept formation training. The results were used to predict new AB2X4 compounds. The computer training method proved an efficient means of revealing the connection between probability of spinel type compounds existence with the component properties. Certain compounds of general formula AB2X4 were predicted and the probability that they possess spinel structure was evaluated
Original Title
Prognozirovanie khal'kogenidnykh shpinelej obshchej formuly AB2X4 s primeneniem metoda obucheniya EhVM
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For English translation see the journal Russian Journal of Inorganic Chemistry (UK).
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Journal Article
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Zhurnal Neorganicheskoj Khimii; ISSN 0044-457X;
; v. 24(6); p. 1427-1429

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AbstractAbstract
[en] Ca-Al refractory inclusions with characteristic chemical and mineralogical compositions show an enhanced occurrence of 20 pct of isotope anomalies reflecting unknown nucleosynthetic effects for O and Mg. The anomalies are characterized by large isotope fractionation in Mg, apparent deficits in Mg-26/Mg-24, and large correlated effects for isotopes of Ca, Ti, and Cr. These isotope patterns define exotic components depleted in the most neutron-rich isotopes of Ca, Ti, and Cr, or components depleted in isotopes produced in explosive O and Si burning. An opaque assemblage within one of the inclusions yields isotope anomalies in Cr similar to the bulk inclusion and must be intrinsically part of the inclusion and not a trapped, foreign grain aggregate. 23 refs
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L37-L40.
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Chang, Chih-Hung; Paul, Brian K.; Remcho, Vincent T.; Atre, Sundar; Hutchison, James E., E-mail: changch@engr.orst.edu, E-mail: vincent.remcho@oregonstate.edu2008
AbstractAbstract
[en] A critical barrier to the routine use of nanomaterials is the tedious, expensive means of their synthesis. Microreaction technology takes advantage of the large surface area-to-volume ratios within microchannel structures to accelerate heat and mass transport. This accelerated transport allows for rapid changes in reaction temperatures and concentrations leading to more uniform heating and mixing which can have dramatic impacts on macromolecular yields and nanoparticle size distributions. Benefits of microreaction technology include higher yield and reactant conversion, better energy efficiency and less by-product generation. Microreactors can help minimize the environmental impact of nanoproduction by enabling solvent free mixing, integrated separation techniques and reagent recycling. The possibility of synthesizing nanomaterials in the required volumes at the point-of-use eliminates the need to store and transport potentially hazardous materials and provides the flexibility for tailoring complex functional nanomaterials. Recognizing these benefits for nanosynthesis, continuous flow microreactors have been used by several research groups to synthesize and characterize nanomaterials. An overview of these efforts and issues related to scale up and other post synthesis processes such as separation and deposition are presented in this paper.
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Source
Copyright (c) 2008 Springer Science+Business Media B.V.; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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Journal of Nanoparticle Research; ISSN 1388-0764;
; v. 10(6); p. 965-980

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Belyaev, V S; Zagreev, B V; Kedrov, A Yu; Kovkov, D V; Lobanov, A V; Matafonov, A P; Savel’ev, A B; Mordvincev, I M; Tsymbalov, I N; Shulyapov, S A; Paskhalov, A A; Eremin, N V; Krainov, V P, E-mail: belyaev@tsniimash.ru2017
AbstractAbstract
[en] The processes and problems of big bang nucleosynthesis are considered. Powerful laser pulses allow us to obtain high energy density in matter. Thus, laboratory modeling of big bang nucleosynthesis becomes feasible. Results of experiments on the picosecond laser facility ‘Neodymium’ and on the femtosecond terawatt laser are reported. Further investigations of this topic are discussed. (paper)
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Source
Available from http://dx.doi.org/10.1088/1555-6611/aa684e; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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Laser Physics (Online); ISSN 1555-6611;
; v. 27(6); [8 p.]

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Chang, Aram; Singh, Shanteri; Bingman, Craig A.; Thorson, Jon S.; Phillips, George N. Jr, E-mail: jsthorson@pharmacy.wisc.edu, E-mail: jsthorson@pharmacy.wisc.edu2011
AbstractAbstract
[en] The structural characterization of CalO1 is reported. The X-ray structure determination at 2.4 Å resolution of the putative orsellinic acid C3 O-methyltransferase (CalO1) involved in calicheamicin biosynthesis is reported. Comparison of CalO1 with a homology model of the functionally related calicheamicin orsellinic acid C2 O-methyltransferase (CalO6) implicates several residues that are likely to contribute to the regiospecificity of alkylation. Consistent with the proposed requirement of an acyl-carrier-protein-bound substrate, this structural study also reveals structural determinants within CalO1 that are anticipated to accommodate an association with an acyl carrier protein
Source
S090744491100360X; Available from http://dx.doi.org/10.1107/S090744491100360X; Available from http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3046457; PMCID: PMC3046457; PMID: 21358050; PUBLISHER-ID: yt5031; OAI: oai:pubmedcentral.nih.gov:3046457; Copyright (c) International Union of Crystallography 2011; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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Acta Crystallographica. Section D: Biological Crystallography; ISSN 0907-4449;
; CODEN ABCRE6; v. 67(Pt 3); p. 197-203

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AbstractAbstract
[en] Using techniques from singular perturbation theory, we explicitly calculate the cosmological evolution in a class of modified gravity models. By considering both the CDTT and modified CDTT (mCDTT) models, which aims to explain the current acceleration of the universe with a modification of gravity, we show that Einstein evolution can be recovered for most of cosmic history in at least one f(R) model. We show that a standard epoch of matter domination can be obtained in the mCDTT model, providing a sufficiently long epoch to satisfy observations. We note that the additional inverse term will not significantly alter standard evolution until today and that the solution lies well within present constraints from big bang nucleosynthesis. For the CDTT model, we analyze the 'recent radiation epoch' behavior (a∝t1/2) found by previous authors. We finally generalize our findings to the class of inverse power-law models. Even in this class of models, we expect a standard cosmological evolution, with a sufficient matter domination era, although the sign of the additional term is crucial.
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(c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
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