In the present work, ribosomes assembled in bacterial cells in the absence of essential ribosomal protein L5 were obtained. After arresting L5 synthesis, Escherichia coli cells divide a limited number of times. During this time, accumulation of defective large ribosomal subunits occurs. These 45S particles lack most of the central protuberance (CP) components (5S rRNA and proteins L5, L16, L18,...

Department of Physics and Astronomy. Louisiana State University, Baton RougeL, ouisiana 70803 Center for Advanced hficrostructures and Devices, Louisiana State University. Baton Rouge, Louisiana 70803 Department of Chemistry. Louisiana State University. Baton Rouge, Louisiana 70803 Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 9l l25 ...

Wal-Mart is the largest company in the world, yet little is known about its economic impact. This essay discusses what is known about Wal-Mart’s competitive advantage and its economic impact on local communities, as well as the national and global economy, and highlights the open questions to be addressed by future research. JEL Codes: L11, L25, L81

Recent work drawing on data for large and small firms has shown a Pareto distribution of firm size. We mix a Gibrat-type growth process among incumbents with an exponential distribution of firm’s age, to obtain the empirical Pareto distribution. JEL codes: L20, L25

It has been argued that the most likely explanation for the result that earnings rise with firm size is that large firms employ high-ability individuals. In this paper we use matched employer-employee panel data from Ghana and Kenya and test for firm size effects in earnings regressions whilst controlling for unobserved ability in the form of worker fixed effects. For both countries we obtain a...