776 research outputs found
Synthesis of hollow silica spheres with mesostructured shell using cationic-anionic-neutral block copolymer ternary surfactants
No full textTHEORETICAL CALCULATIONS OF HYPERFINE INTERACTIONS OF THE JAHN-TELLER DISTORTED SINGLE VACANCY IN SILICON
No full textPhysics, Condensed MatterSCI(E)1ARTICLE52605-26123
Relativistic charged balls
No full textIt is proven that the relativistic charged ball with its charge less than its mass (in natural units) cannot have a nonsingular static configuration while its radius approaches its external horizon size. This conclusion does not depend on the details of charge distribution and the equation of state. The involved assumptions are (i) the ball is made of perfect fluid; (ii) the energy density is everywhere non-negative.Physics, MultidisciplinarySCI(E)中国科学引文数据库(CSCD)7ARTICLE4571-5763
Radiation-induced root surface caries restored with glass-ionomer cement placed in conventional and ART cavity preparations: Results at two years
Full text linkThe document attached has been archived with permission from the Australian Dental Association (8th Jan 2008). An external link to the publisher’s copy is included.Background: There are no published studies comparing the clinical performances of more-viscous glass-ionomer cement (GIC) restorations when placed using conventional and atraumatic restorative treatment (ART) cavity preparation methods to restore root surface caries. Methods: One dentist used encapsulated Fuji IX GP and Ketac-Molar to restore 72 conventional and 74 ART cavity preparations for 15 patients who had received cervicofacial radiation therapy. Two assessors evaluated the restorations at six, 12, and 24 months for retention, marginal defects and surface wear, and recurrent caries. Results: After two years, the cumulative restoration successes were 65.2 per cent for the conventional and 66.2 per cent for the ART cavity preparations, without statistical or clinical significance (P>0.50). Restoration dislodgement accounted for 82.8 per cent and marginal defects for 17.2 per cent of all failures. There were no instances of unsatisfactory restoration wear or recurrent caries observed. Teeth with three or more restored cervical surfaces accounted for 79.3 per cent of all failures (P<0.0001). Conclusions: For root surface caries restored with GIC, the use of hand instruments only with the ART method was an equally effective alternative to conventional rotary instrumentation for cavity preparation. Larger restorations had higher failures, usually from dislodgement.JY Hu, XC Chen, YQ Li, RJ Smales and KH Yi
Qualitative analysis for a model of forest with diffusion and nonlocal effects
No full textThis study addresses an integro-differential system with a given time delay. The equation to this problem is reduced to a lower-dimensional reaction-cross-diffusion model to study travelling wave solutions. Both the decoupling method and invariant rectangle are used to prove the global existence and boundedness of solution. In addition, based on some differential inequality, the global stability of zero solution is proven.Mathematics, AppliedMathematicsSCI(E)EI2ARTICLE2217-2293
Pseudoautosomal abnormalities in terminal AZFb+c deletions are associated with isochromosomes Yp and may lead to abnormal growth and neuropsychiatric function
Full text link© The Author 2016. Published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology. All rights reserved. STUDY QUESTION: Are copy number variations (CNVs) in the pseudoautosomal regions (PARs) frequent in subjects with Y-chromosome microdeletions and can they lead to abnormal stature and/or neuropsychiatric disorders? SUMMARY ANSWER: Only subjects diagnosed with azoospermia factor (AZF)b+c deletions spanning to the end of the Y chromosome (i.e. terminal deletions) harbor Y isochromosomes and/or cells 45, X that lead to pseudoautosomal gene CNVs, which were associated with abnormal stature and/or neuropsychiatric disorders. WHAT IS KNOWN ALREADY: The microdeletions in the long arm of the Y chromosome (Yq) that include the loss of one to three AZF regions, referred to as Yq microdeletions, constitute the most important known etiological factor for primary spermatogenic failure. Recently, controversy has arisen about whether Yq microdeletions a
Magnetohydrodynamic tidal waves on a spinning magnetic compact star
No full textIn an X-ray binary system, the companion star feeds the compact neutron star with plasma material via accretion. The spinning neutron star is likely covered with a thin "magnetized ocean" and may support magnetohydrodynamic (MHD) tidal waves. While modulating the thermal properties of the ocean, MHD tidal waves periodically shake the base of the stellar magnetosphere that traps energetic particles, including radiating relativistic electrons. For a radio pulsar, MHD tidal waves in the stellar surface layer may modulate radio emission processes and leave indelible signatures on timescales different from the spin period. Accretion activities are capable of exciting these waves, but may also meanwhile obstruct or obscure their detection. Under fortuitous conditions, MHD tidal waves might be detectable and offer valuable means to probe properties of the underlying neutron star. Similar situations may also occur for a cataclysmic variable-an accretion binary system that contains a rotating magnetic white dwarf. This Letter presents the theory for MHD tidal waves in the magnetized ocean of a rotating degenerate star and emphasizes their potential diagnostics in X-ray and radio emissions.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000172853000013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Astronomy & AstrophysicsSCI(E)11ARTICLE2L147-L15056
Realization of the long-term continuous output for an atom laser: A proposal
No full textWe propose a scheme for realizing the long-term continuous output of an atom laser. The process of the phase unification of the new entered BEC atoms with the remaining atoms in the main BEC trap, the coupling of the atoms from the subsidiary BEC to the main BEC and the time rates of all the different processes are discussed in this scheme. The duration of the continuous output of the atom laser beam is actually unlimited and thus creates the possibilities of their practical application.OpticsPhysics, AppliedCPCI-S(ISTP)
Global periodic attractor for a model of forest with diffusion and seasonal effects
No full textMathematics, AppliedMathematicsSCI(E)EI11ARTICLE11-123
Generalized Apostol-type polynomial matrix and its algebraic properties
No full textThe work of the first author (YQ) has been supported by Decanato de Investigaci on y Desarrollo, Universidad Sim on Bol var, Venezuela, grant DID-USB (S1-IC-CB-003-16). Also, the first author thanks the hospitality of Coordinación de Matem aticas of Universidad del Atl antico during her visit for the Fall Semester 2016. The work of the second author (WR) has been supported by Universidad del Atlántico, Colombia, grant Impacto Caribe (IC-002627-2015). The work of the third author (AU) has been partially supported by Universidad del Atl antico, Colombia, grant Impacto Caribe (IC-002627-2015)
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