Search results for "Penn"
showing 10 items of 568 documents
Measurement of the g Factor of the Bound Electron in Hydrogen-like Oxygen 16O7+
2003
The measurement of the g factor of the electron bound in a hydrogen-like ion is a high- accuracy test of the theory of Quantum Electrodynamics (QED) in strong fields. Here we report on the measurement of the g factor of the bound electron in hydrogen-like oxygen 16O7+. In our experiment a single 16O7+ ion is stored in a Penning trap. Quantum jumps between the two spin states (spin up and spin down) are induced by a microwave field at the spin precession frequency of the bound electron. The g factor of the bound electron is obtained by varying the microwave frequency and counting the number of spin flips. Our experimental value for the g factor of the bound electron is gexp(16O7+) = 2.000 04…
Data from: Not only for egg yolk - functional and evolutionary insights from expression, selection and structural analyses of Formica ant vitellogeni…
2015
Vitellogenin, a storage protein, has been extensively studied for its egg-yolk precursor role, and it has been suggested to be fundamentally involved in caste differences in social insects. More than one vitellogenin copy has been reported in several oviparous species, including ants. However, the number and function of different vitellogenins, their phylogenetic relatedness and their role in reproductive queens and non-reproductive workers has been studied in few species only. We studied caste biased expression of vitellogenins in seven Formica ant species. Only one copy of conventional vitellogenin was identified in Formica species, and three vitellogenin homologues, derived from ancient …
Is translation an autopoietic system?
2010
Translation is analyzed from the standpoint of its systemic properties. Translation is shown to have the capacity to observe itself and its difference from the environment. Observation being a major autopoietic factor, translation may be considered as an autopoietic system. Doubts about this hypothesis arise because of the peculiarities of communicative properties of translation. Translation plays the role of the mediating party in complex translation communication events and its communicative behavior is ‘defective’ in that translation does not act upon source messages because its communicative function is passing messages on to the target party. As a system, translation may be studied aga…
The amide of galacturonic acid with lysine as an immunodominant component of the lipopolysaccharide core region from Proteus penneri 42 strain
2014
Most Proteus lipopolysaccharides (LPSs) contain uronic acids or their amides with different amino acids, which together with other negatively charged components account for the acidic character of such LPS molecules. Previous studies have shown the significance of an amide of galacturonic acid with lysine [D-GalA(L-Lys)] for serological specificity of O-antigens from few P. mirabilis strains. In this work, the immunodominant role of GalALys was indicated for the P. penneri 42 LPS core region. The studies also showed the serological identity of core oligosaccharides from P. penneri 42 (O71), P. mirabilis 51/57 (O28) and R14/S1959 strains. from P. penneri 42 (O71), P. mirabilis 51/57 (O28) an…
The role of personality traits in leisure time physical activity during COVID-19 pandemic
2021
The COVID-19 pandemic has affected everyday life, including physical activity behavior. This study examined the role of the five factor model of personality traits on leisure time physical activity during the pandemic in a sample (n=168) of 61 year-old Finnish men and women, participating in a larger longitudinal study, between April 2020 and April 2021. Frequency of participation and changes in leisure time physical activity were self-reported. Personality traits and facets were assessed with the 181-item NEO-PI. Openness was the only factor positively associated with leisure time physical activity frequency. Participants scoring higher in extraversion (particularly the activity-facet) and…
Superconducting Solenoid System with Adjustable Shielding Factor for Precision Measurements of the Properties of the Antiproton
2019
Physical review applied 12(4), 044012 (2019). doi:10.1103/PhysRevApplied.12.044012
Country size and business cycle volatility: Scale really matters
2007
Abstract In a recent study Andrew Rose found that country size does not matter for several economic outcomes [Rose, A.K., 2006. Size really doesn't matter: In search of a national scale effect. J. Japanese Int. Economies 4, 482–507]. However, he did not consider the effect that country size may have on business-cycle volatility. To investigate the empirical relationship between business cycle volatility and country size, we use a panel data set that includes 167 countries from 1960 to 2000. The results suggest very strongly that the relationship between country size and business cycle volatility is negative and statistically significant. This implies that smaller countries are subject to mo…
Tax Design in the OECD: A Test of the Hines-Summers Hypothesis
2011
This paper investigates the effects of economic size and trade openness on tax design in the OECD. Using data for 30 OECD countries over the 1965–2007 period, we test the recently proposed Hines-Summers [2009] Hypothesis, according to which the smaller the size and the greater the openness of the economy, the more it will rely on expenditure taxes and the less on income taxes. Our findings show that the Hines-Summers Hypothesis can claim broad, statistically significant, and robust empirical support in the OECD data sets we examined.
How best to measure discretionary fiscal policy? Assessing its impact on private spending
2013
We develop a novel empirical approach to assess the effect of discretionary fiscal policy on private spending consisting of three stages: 1) extract the discretionary component of fiscal policy by estimating a fiscal policy rule; 2) use the residuals of the first-stage regression to investigate the existence of crowding-in and/or crowding-out effects both in the short and the medium term; and 3) condition the response of private spending on a set of country characteristics. We find that an expansion in discretionary fiscal policy boosts growth in the short term, but is detrimental in the medium term. In addition, the empirical findings suggest that the effect of discretionary fiscal policy …
FINANCIAL MARKETS' SHUTDOWN AND REACCESS
2017
We employ a discrete-time parametric duration model on a group of 121 countries over the period 1970–2011 and find that the probability of the end of financial markets' shutdown and reaccess falls as these events become longer. We also show that: (1) shutdown episodes are longer when economic prospects are poor and the degree of financial openness falls, the chief executive has been in office for long periods, and the country has a default history and (2) spells of reaccess tend to be longer when economic growth improves and financial openness increases, there are neither government crises nor government instability, and the country did not default in the past. (JEL C41, G15)