352 research outputs found

    Software for the analysis of mutations at the human hprt gene

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    A computerized database containing DNA sequence information regarding human HPRT mutants has been created. The database itself is in the dBASE format and contains information on about 1500 mutants. In addition, an IBM PC compatible software package to analyze the information in the database has been developed. Both the database and software are freely available via the Internet

    Fidelity of Thermococcus litoralis DNA polymerase (Vent TM ) in PCR determined by denaturing gradient gel electrophoresis

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    DNA synthesis fidelities of two thermostable DNA polymerases, Thermus aquaticus (Taq) and Thermococcus litoralis (Tli, also known as Ven

    Phomopsis bougainvilleicola prepatellar bursitis in a renal transplant recipient

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    Prepatellar bursitis is typically a monomicrobial bacterial infection. A fungal cause is rarely identified. We describe a 61-year-old man who had received a renal transplant 21 months prior to presentation whose synovial fluid and surgical specimens grew Phomopsis bougainvilleicola, a pycnidial coelomycete

    Meromorphic traveling wave solutions of the complex cubic-quintic Ginzburg-Landau equation

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    We look for singlevalued solutions of the squared modulus M of the traveling wave reduction of the complex cubic-quintic Ginzburg-Landau equation. Using Clunie's lemma, we first prove that any meromorphic solution M is necessarily elliptic or degenerate elliptic. We then give the two canonical decompositions of the new elliptic solution recently obtained by the subequation method.Comment: 14 pages, no figure, to appear, Acta Applicandae Mathematica

    On elliptic solutions of the cubic complex one-dimensional Ginzburg-Landau equation

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    The cubic complex one-dimensional Ginzburg-Landau equation is considered. Using the Hone's method, based on the use of the Laurent-series solutions and the residue theorem, we have proved that this equation has neither elliptic standing wave nor elliptic travelling wave solutions. This result amplifies the Hone's result, that this equation has no elliptic travelling wave solutions.Comment: LaTeX, 12 page

    Solitary waves of nonlinear nonintegrable equations

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    Our goal is to find closed form analytic expressions for the solitary waves of nonlinear nonintegrable partial differential equations. The suitable methods, which can only be nonperturbative, are classified in two classes. In the first class, which includes the well known so-called truncation methods, one \textit{a priori} assumes a given class of expressions (polynomials, etc) for the unknown solution; the involved work can easily be done by hand but all solutions outside the given class are surely missed. In the second class, instead of searching an expression for the solution, one builds an intermediate, equivalent information, namely the \textit{first order} autonomous ODE satisfied by the solitary wave; in principle, no solution can be missed, but the involved work requires computer algebra. We present the application to the cubic and quintic complex one-dimensional Ginzburg-Landau equations, and to the Kuramoto-Sivashinsky equation.Comment: 28 pages, chapter in book "Dissipative solitons", ed. Akhmediev, to appea
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