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Search Results: 1 - 10 of 226382 matches for " Axel R Heller "
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n-3 fatty acid-enriched parenteral nutrition regimens in elective surgical and ICU patients: a meta-analysis
Lorenzo Pradelli, Konstantin Mayer, Maurizio Muscaritoli, Axel R Heller
Critical Care , 2012, DOI: 10.1186/cc11668
Abstract: Medline was searched for randomized controlled trials comparing n-3 PUFA-enriched lipid emulsions with standard non-enriched lipid emulsions (i.e. soybean oil, MCT/LCT or olive/soybean oil emulsions) in surgical and ICU patients receiving parenteral nutrition. Extracted data were pooled by means of both random and fixed effects models, and subgroup analyses were carried forward to compare findings in ICU versus non-ICU patients.A total of 23 studies (n = 1502 patients: n = 762 admitted to the ICU) were included. No statistically significant difference in mortality rate was found between patients receiving n-3 PUFA-enriched lipid emulsions and those receiving standard lipid emulsions (RR= 0.89; 0.59, 1.33), possibly reflecting a relatively low underlying mortality risk. However, n-3 PUFA-enriched emulsions are associated with a statistically and clinically significant reduction in the infection rate (RR =0.61; 0.45, 0.84) and the lengths of stay, both in the ICU (-1.92; -3.27, -0.58) and in hospital overall (-3.29; -5.13, -1.45). Other beneficial effects included reduced markers of inflammation, improved lung gas exchange, liver function, antioxidant status and fatty acid composition of plasma phospholipids, and a trend towards less impairment of kidney function.These results confirm and extend previous findings, indicating that n-3 PUFAs-enriched parenteral nutrition regimens are safe and effective in reducing the infection rate and hospital/ICU stay in surgical and ICU patients.The role of polyunsaturated fatty acids (PUFA) in the modulation of biologic activities was identified some decades ago, starting from the first studies on the lower cardiovascular risk found in populations with an extremely high intake of n-3 PUFA such as eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA) [1,2]. In addition to being structural constituents of cell membranes, PUFA are precursors of biological mediators involved in the regulation of many physiological functions, incl
Correction: n-3 fatty acid-enriched parenteral nutrition regimens in elective surgical and ICU patients: a meta-analysis
Lorenzo Pradelli, Konstantin Mayer, Maurizio Muscaritoli, Axel R Heller
Critical Care , 2013, DOI: 10.1186/cc11909
Abstract: - For the study Barbosa 2010 [7], this column should read SO/MCT- For the study Berger 2008 [8], this column should read SO/MCT- For the study Friesecke 2008 [9], this column should read SO/MCT- For the study Wachtler 1997 [15], this column should read SO/MCT- For the study Klek 2005 [22], this column should read SO/MCT- For the study Senkal 2007 [28], this column should read SO/MCTThe correct version of the table appears overleaf.The authors declare that they have no competing interests.
The SDSS White Dwarf - M Star Library
René Heller,Axel D. Schwope,Roy H. ?stensen
Physics , 2011,
Abstract: The Sloan Digital Sky Survey (SDSS), originally targeted at quasi-stellar objects, has provided us with a wealth of astronomical byproducts through the last decade. Since then, the number of white dwarfs (WDs) with physically bound main-sequence star companions (mostly dM stars) has increased radically, allowing for fundamentally new insights into stellar physics. Different methods for the retrieval and follow-up analysis of SDSS WD-dM binaries have been applied in the literature, leading to a rising number of WD-dM catalogs. Here we present a detailed literature search, coupled with our own hunting for SDSS WD-dMs by color selection, the outcome being named the "SDSS White Dwarf - M Star Library". We also explain improvements of our automated spectral analysis method.
Staatschuld, Verfassung und Revolutionspr vention: Friedrich Buchholz und der Beginn der Sozialwissenschaft
Axel Rüdiger
Behemoth : a Journal on Civilisation , 2011,
Abstract: From within the environment of the Prussian reforms at the beginning of the 19th century, FriedrichBuchholz developed the social-scientific concept of Zukunftspolitik, which deals with the constitutionalsafeguard of public credit and the prevention of destructive revolution through targetedpolitical reforms. In contrast to political romanticism (Adam Müller and others), Buchholz orientshimself not toward the English system of representation, but toward the French model, to combinerevolutionary popular sovereignty with representative government. Using the example of Englishpublic debt in the 18th century, he develops the political dialectic of materialist necessity and arbitrarycontingency. Whereas sovereignty without representation in the maintenance of public creditinevitably leads to Jacobin Terror, parliamentarian representation without sovereignty leads to, inthe English model, a general state of war. Europe’s future, according to Buchholz, thus depends onthe reform of English Parliamentarianism.
Social Policy and Welfare Reform in the United States — An Introduction
Axel R. Sch?fer
American Studies Journal , 2007,
Abstract: Reforming the welfare state is a prominent topic on the public policy agendas in both the United States and Germany. Critics of European systems of social provision frequently implore us to look to the U. S. for models of change in order to adjust to new global economic challenges. Defenders of European-style social provision argue that the very existence of social safety nets allows people to be flexible and innovative without fear of falling through the cracks. Admonitions about the pitfalls of the 'Standort Deutschland' are countered by warnings about 'amerikanische Verh ltnisse.'
Traffic exposure and medication - a GIS based study on prescription of medicines in the Tyrolean Wipptal
Johannes Rüdisserc,Peter Lercher,Armin Heller
Italian Journal of Public Health , 2008, DOI: 10.2427/5814
Abstract: Background: Environmental health studies often deal with health problems that are influenced by factors with a strong spatial component. However, most analyses of routinely collected health data (cancer register, medication data etc.) are performed at a spatially higher aggregated level. Analyses based on administrative units are frequently subject to confounding by different exposures or other factors and therefore possible effects may remain uncovered or effect estimates distorted. Methods: A medication prevalence study in the Tyrolean Wipptal, is presented as example for an address based analysis of public health data. To assess whether road or rail exposure is associated with the prescription of medicines the study population was divided in subgroups based on traffic source exposure levels at each address (exposure groups). The medication prevalence proportion for each exposure group was estimated using health insurance data. Results: Significant differences in medication for various exposure groups could be found. Mainly the railway and main road exposure groups showed higher medication prevalence in some age and medication groups. Conclusions: Address based spatial analysis of health register data is still an underutilized Public healthtechnique. A persistent problem is the availability of important covariates (education, income etc.) on a more detailed level than municipalities. This situation might be improved if national statistics agencies provide such statistical data on the basis of the European wide raster system
Domain Wall Fermions with Exact Chiral Symmetry
R. G. Edwards,U. M. Heller
Physics , 2000, DOI: 10.1103/PhysRevD.63.094505
Abstract: We show how the standard domain wall action can be simply modified to allow arbitrarily exact chiral symmetry at finite fifth dimensional extent. We note that the method can be used for both quenched and dynamical calculations. We test the method using smooth and thermalized gauge field configurations. We also make comparisons of the performance (cost) of the domain wall operator for spectroscopy compared to other methods such as the overlap-Dirac operator and find both methods are comparable in cost.
Statistical Properties of Many Particle Eigenfunctions
Eric J. Heller,Brian R. Landry
Physics , 2007, DOI: 10.1088/1751-8113/40/31/006
Abstract: Wavefunction correlations and density matrices for few or many particles are derived from the properties of semiclassical energy Green functions. Universal features of fixed energy (microcanonical) random wavefunction correlation functions appear which reflect the emergence of the canonical ensemble as the number of particles approaches infinity. This arises through a little known asymptotic limit of Bessel functions. Constraints due to symmetries, boundaries, and collisions between particles can be included.
The effect of hyperdiffusivity on turbulent dynamos with helicity
Axel Brandenburg,Graeme R. Sarson
Physics , 2001, DOI: 10.1103/PhysRevLett.88.055003
Abstract: In numerical studies of turbulence, hyperviscosity is often used as a tool to extend the inertial subrange and to reduce the dissipative subrange. By analogy, hyperdiffusivity (or hyperresistivity) is sometimes used in magnetohydrodynamics. The underlying assumption is that only the small scales are affected by this manipulation. In the present paper, possible side effects on the evolution of the large scale magnetic field are investigated. It is found that for turbulent flows with helicity, hyperdiffusivity causes the dynamo-generated magnetic field to saturate at a higher level than normal diffusivity. This result is successfully interpreted in terms of magnetic helicity conservation, which also predicts that full saturation is only reached after a time comparable to the large scale magnetic (hyper)diffusion time.
The Schr?dinger Functional and Non-Perturbative Improvement
R. G. Edwards,U. M. Heller,T. R. Klassen
Physics , 1997, DOI: 10.1016/S0920-5632(97)00918-3
Abstract: After describing the Schr\"odinger functional for standard and improved gluon and quark actions we present results for the non-perturbative clover coefficients of the SW quark action coupled to the Wilson plaquette action for $\beta \geq 5.7$, as well as the L\"uscher-Weisz one-loop tadpole improved gauge action, both in the quenched approximation.
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