Articles by Author: Wanxia Yang

Search results for Wanxia Yang

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  1. Genotypic variation in tree growth and selected flavonoids in leaves of <em>Cyclocarya paliurus</em>

    Genotypic variation in tree growth and selected flavonoids in leaves of <em>Cyclocarya paliurus</em>

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Cyclocarya paliurus is a valuable medicinal tree species in China. However, limited information is available on its genotype selection and cultivation for improvement of growth and health-promoting phytochemicals. To contribute to improved knowledge of the potential use of the species,...
  2. HOMOLOGICAL DIMENSIONS OF INVARIANTS FOR HOPF ALGEBRA ACTIONS

    HOMOLOGICAL DIMENSIONS OF INVARIANTS FOR HOPF ALGEBRA ACTIONS

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    Let H be a Hopf algebra acting on a ring A, and let A H denote the invariant subring of A. It is shown that if H is semisimple and A is a finitely generated projective right A H—module then...
  3. On the solutions of the exponential Diophantine equation <em>a</em>
               <sup>
                  <em>x</em>
               </sup> + <em>b</em>
               <sup>
                  <em>y</em>
               </sup> = (<em>m</em>
               <sup>2</sup> + 1)<sup>
                  <em>z</em>
               </sup>

    On the solutions of the exponential Diophantine equation <em>a</em> <sup> <em>x</em> </sup> + <em>b</em> <sup> <em>y</em> </sup> = (<em>m</em> <sup>2</sup> + 1)<sup> <em>z</em> </sup>

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    In this paper, we consider the Diophantine equation a x + b y = c z . Combining Laurent's result on lower bounds for linear forms in two logarithms, Bugeaud's result on upper bounds for the p-adic...
  4. Comparative study of the primary healthcare systems in China and Mali

    Comparative study of the primary healthcare systems in China and Mali

    Item type: Journal Article • Journal: South African Family Practice
    Background: Community health centres (CHCs) are an important component of the health system in Mali and China. Despite patient support and commitment from the authorities, the management and the quality of care of these structures need to be improved. This...
  5. Melham's Conjecture on Odd Power Sums of Fibonacci Numbers

    Melham's Conjecture on Odd Power Sums of Fibonacci Numbers

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    Ozeki and Prodinger showed that the odd power sum of the first several consecutive Fibonacci numbers of even order is equal to a polynomial evaluated at a certain Fibonacci number of odd order. We prove that this polynomial and its...
  6. Prevalence of HIV and malaria: a cross-sectional study on Bioko Island, Equatorial Guinea

    Prevalence of HIV and malaria: a cross-sectional study on Bioko Island, Equatorial Guinea

    Item type: Journal Article • Journal: African Journal of AIDS Research
    Malaria and HIV are two of the most severe public health problems in Africa. However, epidemiological data on Bioko Island is scarce. To investigate the prevalence of malaria and HIV infections and assess association of malaria and HIV infections and...
  7. Investor sentiment, asset returns and firm characteristics: Evidence from the Korean Stock Market

    Investor sentiment, asset returns and firm characteristics: Evidence from the Korean Stock Market

    Item type: Journal Article • Journal: Investment Analysts Journal
    This study investigates the effects of investor sentiment on asset returns with respect to firm characteristics. By analysing a unique stock trading dataset of the Korean Stock Market that contains rich information on investor types and sentiment, we confirm that...