5,657 research outputs found

    Loop homology of spheres and complex projective spaces

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    In his Inventiones paper, Ziller (Invent. Math: 1-22, 1977) computed the integral homology as a graded abelian group of the free loop space of compact, globally symmetric spaces of rank 1. Chas and Sullivan (String Topology, 1999)showed that the homology of the free loop space of a compact closed orientable manifold can be equipped with a loop product and a BV-operator making it a Batalin-Vilkovisky algebra. Cohen, Jones and Yan (The loop homology algebra of spheres and projective spaces, 2004) developed a spectral sequence which converges to the loop homology as a spectral sequence of algebras. They computed the algebra structure of the loop homology of spheres and complex projective spaces by using Ziller's results and the method of Brown-Shih (Ann. of Math. 69:223-246, 1959, Publ. Math. Inst. Hautes \'Etudes Sci. 3: 93-176, 1962). In this note we compute the loop homology algebra by using only spectral sequences and the technique of universal examples. We therefore not only obtain Zillers' and Brown-Shihs' results in an elementary way, we also replace the roundabout computations of Cohen, Jones and Yan (The loop homology algebra of spheres and projective spaces, 2004) making them independent of Ziller's and Brown-Shihs' work. Moreover we offer an elementary technique which we expect can easily be generalized and applied to a wider family of spaces, not only the globally symmetric ones.Comment: 10 pages, 8 figure

    Hamster leukemia virus: lack of endogenous DNA synthesis and unique structure of its DNA polymerase

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    Infectious hamster leukemia virus (HaLV) contains a DNA polymerase different from those of murine and avian viruses. No endogenous reaction directed by the 60 to 70S RNA of HaLV could be demonstrated in detergenttreated HaLV virions, nor could the purified DNA polymerase copy added viral RNA. The virion RNA could, however, act as template for added avian myeloblastosis virus DNA polymerase and the HaLV DNA polymerase could efficiently utilize homopolymers as templates. The HaLV enzyme was like other reverse transcriptases in that certain ribohomopolymers were much better templates than the homologous deoxyribohomopolymers. No ribonuclease H activity could be shown in the HaLV enzyme, but neither could activity be found in the murine leukemia virus DNA polymerase. The hamster enzyme was unique in that poly(A) ·oligo(dT) was a poor template, and globin mRNA primed with oligo(dT) was totally inactive as a template. Its uniqueness was also indicated by its subunit composition; electrophoresis of the HaLV DNA polymerase in sodium dodecyl sulfate-containing polyacrylamide gels revealed equimolar amounts of two polypeptides of molecular weight 68,000 and 53,000. The sedimentation rate of the enzyme in glycerol gradients was consistent with a structure containing one each of the two polypeptides. The enzyme thus appears to be structurally distinct from other known virion DNA polymerases. Its inability to carry out an endogenous reaction in vitro might result from an inability to utilize certain primers

    Proposals to Reinstate the Voluntary Recognition Bar and Rein in Captive Audience Speeches: A Rationale for Change at the National Labor Relations Board

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    Labor and Employment Law Under the Obama Administration: A Time for Hope and Change? Symposium held November 12-13, 2010, Indiana University Maurer School of Law, Bloomington, Indiana

    Proposals to Reinstate the Voluntary Recognition Bar and Rein in Captive Audience Speeches: A Rationale for Change at the National Labor Relations Board

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    Labor and Employment Law Under the Obama Administration: A Time for Hope and Change? Symposium held November 12-13, 2010, Indiana University Maurer School of Law, Bloomington, Indiana

    Telling the Whole Story: Voices of Ethnic Volunteers in America

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    Compiles focus group reports about volunteerism in communities of color and immigrant communities; how ethnicity, gender, age, country of origin, class background, and upbringing shape community work; common themes; and guidance for nonprofits

    Alien Registration- Kelly, Nora L. (Dover-Foxcroft, Piscataquis County)

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    https://digitalmaine.com/alien_docs/10373/thumbnail.jp

    The three-quark static potential in perturbation theory

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    We study the three-quark static potential in perturbation theory in QCD. A complete next-to-leading order calculation is performed in the singlet, octets and decuplet channels and the potential exponentiation is demonstrated. The mixing of the octet representations is calculated. At next-to-next-to-leading order, the subset of diagrams producing three-body forces is identified in Coulomb gauge and its contribution to the potential calculated. Combining it with the contribution of the two-body forces, which may be extracted from the quark-antiquark static potential, we obtain the complete next-to-next-to-leading order three-quark static potential in the colour-singlet channel.Comment: 36 pages, 11 figures, version published in Phys.Rev.

    The Role of Product Knowledge and Attitudes toward Purchasing Intentions: The Moderating Effect of Religiosity on Halal Cosmetics

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    This study aimed to explore the influence of the product knowledge, attitude on consumer, purchase intention and the moderating effect of religiosity on halal cosmetics. The samples of this research paper were halal cosmetics consumers. The research used purposive sampling. There were 96 respondents participating in this research. Data were analyzed by using SEM with Warp PLS 4.0. The result indicated that product knowledge and attitude had significant and positive value on the purchase intention. This study proved religiosity as the influence moderation of product knowledge towards purchase intention. However, it cannot be the influence moderation of the attitude towards the purchase intention. The Implication of this study showed that Muslim became smarter and selective on choosing the products to be consumed. Thus, one’s religiosity determined the shaping of consumer intentionbehavior. The high level of religiosity of people would make them to be more selective on using a product. On the other hand, the low level of religiosity of people would make them to be ignorant with the information of halal product. Keywords: Product     Knowledge; Attitude; Purchase Intention; Religiosity; Halal Cosmetic, JEL Code:M3
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