,s.BsTRAcT, The prevalence of CtJ.aietla hurnetii infection in 207 cattle with repreductive disorders was studied by using an indireet immunofiuorescence <IF) tcst, nested polymerase chain reaction {PCR) and isolatien, IF antibodies te phase I and phase II antigens ef C, httrnetii were found in l22 (58.9%) and I25 <60.4%) of the sefa. respeclivcly, and PCR-positives svere found in 8 (3.9%) of t...

plant dry matter accumulation has a linear relation with accumulative photosynthetically active radiation (par). intercropping could be a strategy for increasing light absorption in agronomic systems and it may improve radiation use efficiency (rue). thus this study was conducted in order to evaluate radiation absorption and use efficiency in potato (solanum tuberosum l.) –corn (zea mays l.) in...

It is widely argued that declining fertility slows the pace of economic growth through its negative effect on labor supply. There are, however, theoretical arguments suggesting that the effect of falling fertility on effective labor supply can be offset by the associated behavioral changes. We formalize these arguments by setting forth a dynamic consumer optimization model that incorporates end...

This paper explores how language policy affects the socio-economic development of nation states through two channels: the individual’s exposure to and (in reference to an individual’s mother tongue) linguistic distance from the official language. In a cross-country framework the paper first establishes a robust and sizeable negative relationship between an official language that is distant from...

It is widely argued that declining fertility slows the pace of economic growth through its negative effect on labor supply. There are, however, theoretical arguments suggesting that the effect of falling fertility on effective labor supply can be offset by the associated behavioral changes. We formalize these arguments by setting forth a dynamic consumer optimization model that incorporates end...

We generalize a trade model with firm-specific heterogeneity and R&D-based growth to allow for an endogenous education decision of households and an endogenously evolving population. Our framework is able to explain cross-country differences in living standards and trade intensities by the differential pace of human capital accumulation among industrialized countries. Consistent with the empiri...

The emergence of collaborative approaches in innovation policy and regional governance has increased expectations for universities to engage strategy making assume broader roles responsibilities. Nonetheless, complexities inherent the process, context universities’ own institutional organisational capacity are often ignored or under-explained when framing roles. Although these frequently introd...

Using ethanol as a solvent, heterocyclic hexagonal rings for 2-amino-pyran derivatives (I33-I40) were produced by reacting mole of chalcones with malononitrile. Physical properties such melting point, colour, and molecular weight spectroscopic measurements the infrared spectrum, [1H-NMR], [13C-NMR] spectrum used to confirm accuracy prepared compounds' compositions. The biological activity vario...