10,220 research outputs found
Thermal Fluctuations in a Charged AdS Black Hole
In this paper, we will analyze the effects of thermal fluctuations on a
charged AdS black hole. This will be done by analyzing the corrections to black
hole thermodynamics due to these thermal fluctuations. We will demonstrate that
the entropy of this black hole get corrected by logarithmic term. We will also
calculate other corrections to other important thermodynamic quantities for
this black hole. Finally, we will use the corrected value of the specific heat
to analyze the phase transition in this system.Comment: 11 pages, Accepted for publication in EP
ECONOMICS OF WHEAT-FALLOW CROPPING SYSTEMS IN WESTERN NORTH DAKOTA
Income and risk aspects of wheat-fallow cropping systems are analyzed in western North Dakota. A wheat yield trend estimation model based on county yields (1950-77) is developed using independent variables of year, annual precipitation, acres of nonfallowed wheat and a dummy variable for fallow and nonfallow practices. The year-to-year change in wheat yields on fallowed and nonfallowed land indicates that summer fallow is becoming less desirable economically. Based on 1980 costs and yields, summer fallow maximizes returns to land at low yields, low wheat prices, and high nitrogen prices. Income variability is reduced under summer fallow.Crop Production/Industries,
Quintessential Quartic Quasi-topological Quartet
We construct the quartic version of generalized quasi-topological gravity,
which was recently constructed to cubic order in arXiv: 1703.01631. This class
of theories includes Lovelock gravity and a known form of quartic
quasi-topological gravity as special cases and possess a number of remarkable
properties: (i) In vacuum, or in the presence of suitable matter, there is a
single independent field equation which is a total derivative. (ii) At the
linearized level, the equations of motion on a maximally symmetric background
are second order, coinciding with the linearized Einstein equations up to a
redefinition of Newton's constant. Therefore, these theories propagate only the
massless, transverse graviton on a maximally symmetric background. (iii) While
the Lovelock and quasi-topological terms are trivial in four dimensions, there
exist four new generalized quasi-topological terms (the quartet) that are
nontrivial, leading to interesting higher curvature theories in
dimensions that appear well suited for holographic study. We construct four
dimensional black hole solutions to the theory and study their properties. A
study of black brane solutions in arbitrary dimensions reveals that these
solutions are modified from the `universal' properties these solutions have.
This result may lead to interesting consequences for the dual CFTs.Comment: 46 pages, 1 figure. Discussion of black branes added to section
Charged Dilatonic Black Holes in Gravity's Rainbow
In this paper, we present charged dilatonic black holes in gravity's rainbow.
We study geometric and thermodynamic properties of black hole solutions. We
also investigate the effects of rainbow functions on different thermodynamic
quantities for these charged black holes in dilatonic gravity's rainbow. Then,
we demonstrate that first law of thermodynamics is valid for these solutions.
After that, we investigate thermal stability of the solutions using canonical
ensemble and analyze the effects of different rainbow functions on thermal
stability. In addition, we present some arguments regarding the bound and phase
transition points in context of geometrical thermodynamics. We also study the
phase transition in extended phase space in which cosmological constant is
treated as the thermodynamic pressure. Finally, we use another approach to
calculate and demonstrate that obtained critical points in extended phase space
are representing a second order phase transition for these black holes.Comment: 17 pages with 9 captioned figures: Accepted in EPJ
Performance Factors and Management Practices Related to Earnings of East Central North Dakota Crop Farms
Agricultural Finance, Farm Management,
Path length distribution in two-dimensional causal sets
We study the distribution of maximal-chain lengths between two elements of a
causal set and its relationship with the embeddability of the causal set in a
region of flat spacetime. We start with causal sets obtained from uniformly
distributed points in Minkowski space. After some general considerations we
focus on the 2-dimensional case and derive a recursion relation for the
expected number of maximal chains as a function of their length and
the total number of points between the maximal and minimal elements. By
studying these theoretical distributions as well as ones generated from
simulated sprinklings in Minkowski space we identify two features, the most
probable path length or peak of the distribution and its width ,
which can be used both to provide a measure of the embeddability of the causal
set as a uniform distribution of points in Minkowski space and to determine its
dimensionality, if the causal set is manifoldlike in that sense. We end with a
few simple examples of distributions for non-manifoldlike causal sets.Comment: 9 pages, 5 figure
Economic Impact of North Dakota Laws that Permit Delayed or Partial Repayment of Agricultural Debt � July 1, 1986
Agricultural Finance,
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Dynamic multifactor hubs interact transiently with sites of active transcription in Drosophila embryos.
The regulation of transcription requires the coordination of numerous activities on DNA, yet how transcription factors mediate these activities remains poorly understood. Here, we use lattice light-sheet microscopy to integrate single-molecule and high-speed 4D imaging in developing Drosophila embryos to study the nuclear organization and interactions of the key transcription factors Zelda and Bicoid. In contrast to previous studies suggesting stable, cooperative binding, we show that both factors interact with DNA with surprisingly high off-rates. We find that both factors form dynamic subnuclear hubs, and that Bicoid binding is enriched within Zelda hubs. Remarkably, these hubs are both short lived and interact only transiently with sites of active Bicoid-dependent transcription. Based on our observations, we hypothesize that, beyond simply forming bridges between DNA and the transcription machinery, transcription factors can organize other proteins into hubs that transiently drive multiple activities at their gene targets.Editorial noteThis article has been through an editorial process in which the authors decide how to respond to the issues raised during peer review. The Reviewing Editor's assessment is that all the issues have been addressed (see decision letter)
CRT-101.10 Outcomes of Underlying Infiltrative Cardiomyopathy in Percutaneous Coronary Intervention
Background: Evidence on the prognosis of infiltrative cardiomyopathy in patients undergoing percutaneous coronary intervention (PCI) has not been well established. Our objective was to assess the prevalence of infiltrative cardiomyopathy including amyloidosis, sarcoidosis and hemochromatosis in PCI patients and its effect on mortality.
Methods: National Inpatient Sample 2016-2019 was used to conduct a retrospective analysis by identifying a cohort of patients who underwent PCI with infiltrative cardiomyopathy using respective ICD-10 codes. Primary outcome was the effect of infiltrative cardiomyopathy on mortality in patients undergoing PCI. Secondary outcomes were the independent predictors of mortality. Multivariate logistic regression model was used for analysis.
Results: 1.93 million patients were hospitalized for undergoing PCI, out of which 6270 patients had infiltrative cardiomyopathy (prevalence 0.33%). Subgroup analysis showed that 710 patients had underlying amyloidosis (prevalence 0.04%), 4300 patients had sarcoidosis (prevalence 0.23%) and 1280 patients had hemochromatosis (prevalence 0.07%). Mean age of patients undergoing PCI with infiltrative cardiomyopathy was 61 years, 54% were females and 53.5% were white. Patients undergoing PCI were predominantly males (67%) but patient with infiltrative cardiomyopathy who underwent PCI were predominantly females (54%). Underlying amyloidosis was associated with two fold increased odds of mortality in patients undergoing PCI (OR 2.13, 95% CI 1.08-4.23, p=0.029). While sarcoidosis (OR 1.11, 95% CI 0.73-1.7, p=0.6) and hemochromatosis (OR 0.79, 95% CI 0.32-1.92, p=0.6) were not significantly associated with mortality in patients undergoing PCI. The independent predictors of mortality in patients undergoing PCI with infiltrative cardiomyopathy are arrhythmias (OR 2.59, OR 1.14-5.9, p=0.02), cardiac arrest (OR 10.3, CI 3.8-27.6, p=0.00), pulmonary embolism (OR 5.8, CI 1.06-32.4, p=0.04), kidney disease (OR 4.5, CI 1.99-10.3, p=0.00) and liver disease OR 3.5, CI 1.34-9.1, p=0.01).
Conclusion: Prevalence of infiltrative cardiomyopathy in patients undergoing PCI is 0.33%. Amyloidosis is associated with significantly increased odds of mortality in patients undergoing PCI while sarcoidosis and hemochromatosis are not significantly associated with mortality. Arrhythmias, cardiac arrest, pulmonary embolism, kidney and liver disease are independently associated with increased mortality in infiltrative cardiomyopathy patients undergoing PCI
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