Two-photon collisions at electron positron storage rings are a good laboratory to investigate the properties of meson resonances and play a crucial role in glueball searches. A resonant state R can be formed by the collision of two photons via the reaction e+e− → e+e−R (fig. 1). The outgoing electron and positron are usually scattered at very small angles and are not detected (no-tag mode). In ...

Cyclical Movements in Unemployment and Informality in Developing Countries This paper analyzes the cyclical properties of worker flows in Brazil and Mexico, two important developing countries with large unregulated or “informal” sectors. It generates three stylized facts that are critical to the accurate modeling of the sector and which suggest the need to rethink the approaches to date. First,...

OBJECTIVE Short-term neurectomy-induced disuse (SN) has been shown to restore load responses in aged mice. We examined whether this restoration was further enhanced in both cortical and trabecular bone by simply extending the SN. METHODS Following load:strain calibration, tibiae in female C57BL/J6 mice at 8, 14 and 20 weeks and 18 months (n=8/group) were loaded and bone changes measured. Effe...

The percentage of S&P500 firms that offer ex-ante severance agreements to their CEOs grew from 20% in 1993 to more than 55% in 2007 despite controversial discussions on executive severance contracts in the media and academic studies. In addition, about 40% of firms offer their CEOs severance contracts with cash-only payouts. Our paper focuses on this recent spread of ex-ante CEO severance agree...

Trade and Labor Reallocation with Heterogeneous Enforcement of Labor Regulations This paper revisits the question of how trade openness affects labor market outcomes in a developing country setting. We explore the fact that plants face varying degrees of exposure to global markets and to the enforcement of labor market regulations, and rely on Brazil’s currency crisis in 1999 as an exogenous so...

Phosphorylation at serine 235 (S235) of the hepatitis C virus (HCV) non-structural protein 5A (NS5A) plays a critical role in the viral life cycle. For medical and virological interests, we exploited the HEK293T kidney cells to test 3 candidate protein kinases on NS5A S235 phosphorylation. Inhibitors that inhibit casein kinase I α (CKIα), polo-like kinase I (PlKI) or calmodulin-dependent kinase...

There is substantial evidence in the literature that elevated plasma free fatty acids (FFA) play a role in the pathogenesis of type 2 diabetes. CVT-3619 is a selective partial A(1) adenosine receptor agonist that inhibits lipolysis and lowers circulating FFA. The present study was undertaken to determine the effect of CVT-3619 on insulin resistance induced by high-fat (HF) diet in rodents. HF d...

This paper empirically explores the idea that the labor market for academic economists is possibly monopsonistic whereby employers can exploit the heterogeneity of employees to lower the returns to seniority. We estimate the returns to seniority in wage equations from censored salary data generated by grant applications submitted to the National Science Foundation Economics Program. Our results...

The influence of social networks on housing tenure choice remains conspicuously unexplored despite the fact that social networks are crucial in information dissemination. Social networks can encourage the attainment and retention of homeownership by channeling important knowledge and information regarding household finance, wealth management, home maintenance, etc. Social networks also provide ...

The 2008-2009 crisis created large dislocations in the U.S. labor market: some sectors, locations, and occupations were more affected than others. As a result, researchers have been looking at the possibility of structural changes in labor market functioning, which may have created mismatches between available labor and employment opportunities; thus raising equilibrium levels of unemployment. ...