123,381 research outputs found
Urban-Rural Inequality in Living Standards in Africa
welfare, poverty, growth, income distribution
Lindstedt Series Solutions of the Fermi-Pasta-Ulam Lattice
We apply the Lindstedt method to the one dimensional Fermi-Pasta-Ulam
lattice to find fully general solutions to the complete set of equations of
motion. The pertubative scheme employed uses as the expansion
parameter, where is the coefficient of the quartic coupling between
nearest neighbors. We compare our non-secular perturbative solutions to
numerical solutions and find striking agreement.Comment: 17 pages, 10 figures. To appear in the Journal of Mathematical
Physic
Selected Characteristics of Savings and Thrift Plans for Private Industry Workers
[Excerpt] This issue of Beyond the Numbers looks at the growth in the prevalence and at selected characteristics of employer-provided savings and thrift plans in private industry in the United States. The data for this article come from the National Compensation Survey: Health and Retirement Plan Provisions in Private Industry in the United States, 2012. In some instances, comparisons of 2012 data are made to 2009 data, which came from National Compensation Survey: Health and Retirement Plan Provisions in Private Industry in the United States, 2009
Domain interactions within Fzo1 oligomers are essential for mitochondrial fusion
Mitofusins are conserved GTPases essential for the fusion of mitochondria. These mitochondrial outer membrane proteins contain a GTPase domain and two or three regions with hydrophobic heptad repeats, but little is known about how these domains interact to mediate mitochondrial fusion. To address this issue, we have analyzed the yeast mitofusin Fzo1p and find that mutation of any of the three heptad repeat regions (HRN, HR1, and HR2) leads to a null allele. Specific pairs of null alleles show robust complementation, indicating that functional domains need not exist on the same molecule. Biochemical analysis indicates that this complementation is due to Fzo1p oligomerization mediated by multiple domain interactions. Moreover, we find that two non-overlapping protein fragments, one consisting of HRN/GTPase and the other consisting of HR1/HR2, can form a complex that reconstitutes Fzo1p fusion activity. Each of the null alleles disrupts the interaction of these two fragments, suggesting that we have identified a key interaction involving the GTPase domain and heptad repeats essential for fusion
Angry expressions strengthen the encoding and maintenance of face identity representations in visual working memory
This work was funded by a BBSRC grant (BB/G021538/2) to all authors.Peer reviewedPreprin
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