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In order to understand the structural basis for the high thermostability of phytase from Aspergillus fumigatus, its crystal structure was determined at 1.5 A resolution. The overall fold resembles the structure of other phytase enzymes. Aspergillus niger phytase shares 66% sequence identity, however, it is much less heat-resistant. A superimposition of(More)
A parallel-aware program MPI_FSEARCH has been implemented to perform molecular replacement using an exhaustive six-dimensional search. In particular, the program can be used to deal with diffraction data at very low resolution (d > 10 A) that would normally not be appropriate for other molecular-replacement programs such as AMoRe and CNS. Although an(More)
Genotype imputation is commonly used as an initial step in genomic selection since the accuracy of genomic selection does not decline if accurately imputed genotypes are used instead of actual genotypes but for a lower cost. Performance of imputation has rarely been investigated in crossbred animals and, in particular, in pigs. The extent and pattern of(More)
Improved performance of crossbred animals is partly due to heterosis. One of the major genetic bases of heterosis is dominance, but it is seldom used in pedigree-based genetic evaluation of livestock. Recently, a trivariate genomic best linear unbiased prediction (GBLUP) model including dominance was developed, which can distinguish purebreds from crossbred(More)
This paper develops a formal theory of the endogenous process of the introduction of high quality products in developing countries. Initial differences in income and capital and transaction costs are shown to affect the emergence of and the size of the high quality economy. Initial differences in the production structure and the nature of transaction costs(More)
Using a general equilibrium model this paper analyses the overall process through which high standards production and consumption affect development. Market imperfections are so critical in modeling the real effects of high standards that we have to take into account four kinds of them: labor market segmentation, labor migration costs, credit constraints(More)
Industrial concentration and industrial agglomeration are both hot phenomena in industrial development. The former focuses on the scale of individual enterprises. And the latter cares about the scale of specific industry in a named place. Researches on the two respective topics are numerous. However, researches on the relations between them are seldom seen(More)
We analyze the effects of high standards food chains on household welfare taking into account general equilibrium effects and market imperfections. To measure structural production changes and welfare effects on rural and urban households, our model has two types of agents, five kinds of products and four types of factors. We calibrate the model using(More)
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