Race and sex differentials in labor market outcomes in Brazil appear substantial, phenomena often tied to occupational segregation. This paper presents an array of Duncan indices of dissimilarity to investigate the magnitude and contours of occupational differentiation in Brazil, as well as changes in the recent past, constructed from Pesquisa Nacional por Amostra de Domicilios (PNAD) microdata for 1989 and 2001. Findings include the facts that measurable occupational differentation by sex is over twice as high as that by race and that differentiation on both counts is highest among people 35 and older and outside the Northeastern region. Occupational differentiation by race appears comparable among women and men, but may be higher among women if accurately measured. Racial differentiation grows with education, while sexual segregation declines. Differentiation has declined modestly since 1989 in almost all categories except by race among younger people, men and the most educated.
Most economists have not yet grappled with the demands of intersectional scholarship, which recognizes the intertwined nature of gender, race, class, caste and other influences on the economic situation of individuals and groups. Among economists, feminist economists may have made the most progress and be best positioned to break further ground, though we can do better and much remains to be done. This article synthesizes the case for intersectional work, reviews the state of the economic literature, describes the contributions of the articles in this special issue of Feminist Economics on "gender, color, caste and class," and sketches directions for the future.Race, Gender, Caste, Class, Intersectionality, Feminist Economics,
A facile method for the formation of zero-length covalent cross-links between protein molecules in the lyophilized state without the use of chemical reagents has been developed. The cross-linking process is performed by simply sealing lyophilized protein under vacuum in a glass vessel and heating at 85°C for 24 h. Under these conditions, approximately one-third of the total protein present becomes cross-linked, and dimer is the major product. Chemical and mass spectroscopic evidence obtained shows that zero-length cross-links are formed as a result of the condensation of interacting ammonium and carboxylate groups to form amide bonds between adjacent molecules. For the protein examined in the most detail, RNase A, the cross-linked dimer has only one amide cross-link and retains the enzymatic activity of the monomer. The in vacuo cross-linking procedure appears to be general in its applicability because five different proteins tested gave substantial cross-linking, and co-lyophilization of lysozyme and RNase A also gave a heterogeneous covalently cross-linked dimer.
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