46 research outputs found
Exact prefactors in static and dynamic correlation functions of 1D quantum integrable models: applications to the Calogero-Sutherland, Lieb-Liniger and XXZ models
In this article we demonstrate a recently developed technique which addresses
the problem of obtaining non-universal prefactors of the correlation functions
of 1D systems at zero temperature. Our approach combines the effective field
theory description of generic 1D quantum liquids with the finite size scaling
of form factors (matrix elements) which are obtained using microscopic
techniques developed in the context of integrable models. We thus establish
exact analytic forms for the prefactors of the long-distance behavior of equal
time correlation functions as well as prefactors of singularities of dynamic
response functions. In this article our focus is on three specific integrable
models: the Calogero-Sutherland, Lieb-Liniger, and XXZ models.Comment: 95 pages and 8 figure
Assessing circadian rhythms in propofol PK and PD during prolonged infusion in ICU patients
This study evaluates possible circadian rhythms during prolonged propofol infusion in patients in the intensive care unit. Eleven patients were sedated with a constant propofol infusion. The blood samples for the propofol assay were collected every hour during the second day, the third day, and after the termination of the propofol infusion. Values of electroencephalographic bispectral index (BIS), arterial blood pressure, heart rate, blood oxygen saturation and body temperature were recorded every hour at the blood collection time points. A two-compartment model was used to describe propofol pharmacokinetics. Typical values of the central and peripheral volume of distribution and inter-compartmental clearance were VC = 27.7 l, VT = 801 l, and CLD = 2.73 l/min. The systolic blood pressure (SBP) was found to influence the propofol metabolic clearance according to Cl (l/min) = 2.65·(1 â 0.00714·(SBP â 135)). There was no significant circadian rhythm detected with respect to propofol pharmacokinetics. The BIS score was assessed as a direct effect model with EC50 equal 1.98 mg/l. There was no significant circadian rhythm detected within the BIS scores. We concluded that the lightâdark cycle did not influence propofol pharmacokinetics and pharmacodynamics in intensive care units patients. The lack of nightâday differences was also noted for systolic blood pressure, diastolic blood pressure and blood oxygenation. Circadian rhythms were detected for heart rate and body temperature, however they were severely disturbed from the pattern of healthy patients
Does Diabetes Accelerate the Progression of Aortic Stenosis through Enhanced Inflammatory Response within Aortic valves?
Diabetes predisposes to aortic stenosis (AS). We aimed to investigate if diabetes affects the expression of selected coagulation proteins and inflammatory markers in AS valves. Twenty patients with severe AS and concomitant type 2 diabetes mellitus (DM) and 40 well-matched patients without DM scheduled for valve replacement were recruited. Valvular tissue factor (TF), TF pathway inhibitor (TFPI), prothrombin, C-reactive protein (CRP) expression were evaluated by immunostaining and TF, prothrombin, and CRP transcripts were analyzed by real-time PCR. DM patients had elevated plasma CRP (9.2 [0.74â51.9] mg/l vs. 4.7 [0.59â23.14] mg/l, pâ=â0.009) and TF (293.06 [192.32â386.12] pg/ml vs. 140 [104.17â177.76] pg/ml, pâ=â0.003) compared to non-DM patients. In DM group, TFâ, TFPIâ, and prothrombin expression within valves was not related to demographics, body mass index, and concomitant diseases, whereas increased expression related to DM was found for CRP on both protein (2.87 [0.5â9]% vs. 0.94 [0â4]%, pâ=â0.01) and transcript levels (1.3â±â0.61 vs. 0.22â±â0.43, pâ=â0.009). CRP-positive areas were positively correlated with mRNA TF (râ=â0.84, pâ=â0.036). Diabetes mellitus is associated with enhanced inflammation within AS valves, measured by CRP expression, which may contribute to faster AS progression
The Memory Politics of Becoming European: The East European Subalterns and the Collective Memory of Europe
The situation in collective memory studies that share a nexus with
the discipline of International Relations (IR) is currently reflective
of the traditionally West-centric writing of European history. This
order of things has become increasingly challenged after the eastern
enlargement of the European Union (EU). This article examines
Polandâs and the Balticsâ recent attempts to enlarge the mnemonic
vision of âthe united Europeâ by placing their âsubaltern pastsâ in contest
with the conventionally Western European-bent understanding of the
consequences of World War II in Europe. I argue that their endeavours
to wrench the âEuropean mnemonical mapâ apart in order to become
more congruent with the different historical experiences within the
enlarged EU encapsulate the curious trademark of Polish and Baltic
post-Cold War politics of becoming European: their combination of
simultaneously seeking recognition from and resisting the hegemonic
âcore Europeanâ narrative of what âEuropeâ is all about
Embedding carbon impact assessment in multi-criteria supplier segmentation using ELECTRE TRI-rC
Travels without a donkey : the adventures of Bruno Latour
The writings of Bruno Latour have invigorated empirical inquiry in the social sciences and in the process helped to redefine their character. In recent years the philosophy of social science that made this inquiry possible has been deployed to a different end, namely that of rethinking the character of politics. Here I suggest that in the pursuit of this goal, inflated claims are made about that philosophy, and some basic theoretical tools are asked to do a job for which they may not be best equipped