cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Lorentz-diffeomorphism Conserved Charges And Virasoro Algebra In Chern-Simons-Like Theories Of Gravity
Creators: name: Setare, M. R.
name: Adami, H.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Chern-Simons-like theories of gravity (CSLTG) are formulated at first order formalism. In this formalism, the derivation of the entropy of a black hole on bifurcation surface, as a quasi-local conserved charge is problematic. In this paper we overcome to these problems by considering the concept of total variation and the Lorentz-Lie derivative. We firstly find an expression for the ADT conserved current in the context of the CSLTG which is based on the concept of the Killing vector fields. Then, we generalize it to be conserved for all diffeomorphism generators. Thus, we can extract an off-shell conserved charge for any vector field which generates a diffeomorphism. The formalism presented here is based on the concept of quasi-local conserved charges which are off-shell. The charges can be calculated on any codimension two space-like surface surrounding a black hole and the results are independent of the chosen surface. By using the off-shell quasi-local conserved charge, we investigate the Virasoro algebra and find a formula to calculate the central extension term. We apply the formalism to the BTZ black hole solution in the context of the Einstein gravity and the Generalized massive gravity, then we find the eigenvalues of their Virasoro generators as well as the corresponding central charges. Eventually, we calculate the entropy of the BTZ black hole by the Cardy formula and we show that the result exactly matches with the one obtained by the concept of the off-shell conserved charges.
description: 19 pages. In Press by Nucl. Phys. B (2016). doi:10.1016/j.nuclphysb.2016.05.020
title: Functional MRI imaging for precise target determination and results evaluation in liver Stereotactic Body Radiotherapy.
Creators: name: Nemiro, Ineta
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Abdomen
subject: Liver
subject: MR-Functional imaging
subject: Radiation therapy / Oncology
subject: Cancer

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To evaluate Diffusion-Weighted (DW)-MRI in liver Stereotactic Body Radiotherapy (SBRT) for 16 patients with 24 malignant...
Additional file 2 of Uncovering the key working mechanisms of a complex community-based obesity prevention programme in the Netherlands using ripple effects mapping
Creators: name: Huiberts, Irma
name: Collard, Dorine
name: Singh, Amika
name: Hendriks, Mara
name: Chinapaw, Mai J. M.
Publisher: name: figshare
Year: 2024
Subjects: subject: Sociology
subject: FOS: Sociology

description: Additional file 2.
An Evaluation of Methods for Predicting Total Trihalomethane Concentrations in Exposure Assessment Studies
Creators: name: Kachur, Stephen B.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1994

description: This research project was undertaken to evaluate the capacity of a model based on the THM predictive equations developed by Harrington et al (1992) to provide a useful tool in the preparation of exposure assessments in epidemiologic studies. The application of a water distribution network model capable of predicting residence times was evaluated as a supplement to the THM predictive model. In a parallel effort, the project included the preparation and evaluation of a model based on chlorine consumption as a surrogate for the factors affecting THM formation. The Orange Water and Sewer Authority (OWASA) water system, which serves Chapel Hill and Carrboro, North Carolina, was used to develop and test the models. In each case, model predictions were compared to field measurements of THM concentrations in the OWASA distribution system. Results from each modeling effort were compared to the customary methods of estimating THM exposures in epidemiologic studies. The models developed were assessed to determine their suitability for use in both prospective and retrospective studies.
Temperature dependence of alpha-induced scintillation in the 1,1,4,4-tetraphenyl-1,3-butadiene wavelength shifter
Creators: name: Veloce, L. M.
name: Kuźniak, M.
name: Di Stefano, P. C. F.
name: Noble, A. J.
name: Boulay, M. G.
name: Nadeau, P.
name: Pollmann, T.
name: Clark, M.
name: Piquemal, M.
name: Schreiner, K.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Liquid noble based particle detectors often use the organic wavelength shifter 1,1,4,4- tetraphenyl-1,3-butadiene (TPB) which shifts UV scintillation light to the visible regime, facilitating its detection, but which also can scintillate on its own. Dark matter searches based on this type of detector commonly rely on pulse-shape discrimination (PSD) for background mitigation. Alpha-induced scintillation therefore represents a possible background source in dark matter searches. The timing characteristics of this scintillation determine whether this background can be mitigated through PSD. We have therefore characterized the pulse shape and light yield of alpha induced TPB scintillation at temperatures ranging from 300 K down to 4 K, with special attention given to liquid noble gas temperatures. We find that the pulse shapes and light yield depend strongly on temperature. In addition, the significant contribution of long time constants above ~50 K provides an avenue for discrimination between alpha decay events in TPB and nuclear-recoil events in noble liquid detectors.
RRR - Dijksterhuis - ÖZDOĞRU
Creators: name: Özdoğru, Asil
name: Balatekin, Nursena
name: Yücebaş, Saliha
name: Özbek, Gizem
Publisher: name: Open Science Framework
Year: 2022

description: Our laboratory's Implementation of the Dijksterhuis RRR protocol
Housekeeping Entropy in Continuous Stochastic Dynamics with Odd-Parity Variables
Creators: name: Yeo, Joonhyun
name: Kwon, Chulan
name: Lee, Hyun Keun
name: Park, Hyunggyu
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the decomposition of the total entropy production in continuous stochastic dynamics when there are odd-parity variables that change their signs under time reversal. The first component of the entropy production, which satisfies the fluctuation theorem, is associated with the usual excess heat that appears during transitions between stationary states. The remaining housekeeping part of the entropy production can be further split into two parts. We show that this decomposition can be achieved in infinitely many ways characterized by a single parameter σ. For an arbitrary value of σ, one of the two parts contributing to the housekeeping entropy production satisfies the fluctuation theorem. We show that for a range of σ values this part can be associated with the breakage of the detailed balance in the steady state, and can be regarded as a continuous version of the corresponding entropy production that has been obtained previously for discrete state variables. The other part of the housekeeping entropy does not satisfy the fluctuation theorem and is related to the parity asymmetry of the stationary state distribution. We discuss our results in connection with the difference between continuous and discrete variable cases especially in the conditions for the detailed balance and the parity symmetry of the stationary state distribution.
title: US-guided splenic interventional procedures in pediatric patients: How to do it and what to expect
Creators: name: Arroyo, Marta
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Interventional non-vascular
subject: Spleen
subject: Paediatric
subject: Ultrasound
subject: Percutaneous
subject: Biopsy
subject: Drainage
subject: Puncture
subject: Abscess
subject: Lymphoma
subject: Infection

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: - Revise all ultrasound (US) guided splenic interventional procedures performed in children from 2002 to 2013 (n=10). - Describe the different techniques emphasizing the peculiarities of pediatric patients, common indications and techniques...
Assessment of OWASA's Water Rationing Policy using a Linear Programming Model
Creators: name: Nelson, Angelique M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1996

description: OWASA adopted its first rationing policy in July 1977 and revised it in October 1984. The rationing policy is based upon the amount of water stored in University Lake. The years 1985 through 1988 were very dry, with low in flows to University Lake. Consequently, OWASA was forced to invoke a great deal of rationing during these years. These circumstances provided a case for developing a linear programming model in this report for determining the optimal amount of rationing. The linear programming model was formulated using amounts of water in storage in University Lake at the end of each month, shortfalls in meeting demands each month, and excess spillages from the reservoir each month as unknown decision variables. Constraints on continuity, maximum demand reduction due to rationing, maximum reservoir capacity, and desirable target volumes to have in storage were included in the model. Parameters such as inflows, demands, and demand reductions via rationing were evaluated from historical data. A set of input parameters was chosen for a baseline solution, which was used to compare OWASA's historical operation with the optimization model. From the results, the OWASA rationing policy appears to be too simplistic; it is probably insufficient to minimize the amount of required rationing by using a policy that is based only on the amount of water in storage. A more sophisticated policy is needed and a model such as the one developed in this report could provide a means for constructing a more effective policy.
A New Concept for Dual Water Distribution Systems to Ensure Safe Drinking Water
Creators: name: Weaver, Christopher C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: Since their inception 200 years ago, water distribution systems have been designed for fire protection. Today's practice is presented in AWWA's Manual M31 which is driven by the insurance industry. A minimum pipe diameter of 6 inches or 8 inches more recently is required. Much research and many publications have shown that large diameter pipes produce excessive water residence times within the distribution system, resulting in poor drinking water quality at the consumer's tap. Some of the major health impacts can be caused by continued formation of disinfection by-products within the distribution system and by loss of disinfectant residual. The viability of a dual distribution system that incorporates fire protection into the non-potable system was investigated for the new, master planned community of Briar Chapel that is to be constructed in Chatham County, N.C. and will have a projected population of about 6,000. Costs of a dual distribution system were compared with the conventional infastructure in the current design. Water main sizes along with pumping and storage requirements for fire protection were determined using EPANET software. Two different extents of water reclamation in addition to fire demand were simulated: Option A - irrigation (common green spaces and individual lawns) and Option B - irrigation and toilet flushing. The length-averaged pipe diameter was reduced from 8.6 to 3.4 in. for Option A and to 2.8in. for Option B. While cost for the potable water lines was reduced, the analysis showed a net cost increase by addition of the new reclaimed water network (inclusive of water storage tanks for fire protection) that ranged depending on choice of pipe material from $312,000 to $678,000 for Reuse Option A and from $285,000 to $592,000 for Reuse Option B. These costs were offset by reduction in spray irrigation equipment for land disposal of $190,000 in Reuse Option A and $370,000 in Reuse Option B. In addition, the reduction land area needed for land disposal was 28% in Reuse Option A and 52% in Reuse Option B. The savings translates potentially into a large offset in infrastructure costs if this land can be developed.
title: Predisposing factors in posterior circulation infarcts: A vascular morphological assessment
Creators: name: Coban, Gökçen
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Neuroradiology brain
subject: Vascular
subject: MR
subject: Outcomes analysis
subject: Ischaemia / Infarction

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The term dolichoectasia is used for dilated, tortuous, and elongated arteries. Dilatation is the most striking feature and therefore it is also called dilatative arteriopathy. Dilatative arteriopathy is most commonly observed in intracranial...
The clustering and halo occupation distribution of Lyman-break galaxies at $z\sim4$
Creators: name: Park, Jaehong
name: Kim, Han-Seek
name: Wyithe, J. Stuart B.
name: Lacey, C. G.
name: Baugh, C. M.
name: Barone-Nugent, R. L.
name: Trenti, M.
name: Bouwens, R. J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the clustering of Lyman-break galaxies (LBGs) at $z\sim4$. Using the hierarchical galaxy formation model GALFORM, we predict, for the first time using a semi-analytical model with feedback from active galactic nuclei (AGN), the angular correlation function (ACF) of LBGs and find agreement within $3\,σ$ with new measurements of the ACF from surveys including the Hubble eXtreme Deep Field (XDF) and CANDELS field. Our simulations confirm the conclusion reached using independent models that although the predicted ACFs reproduce the trend of increased clustering with luminosity, the dependence is less strong than observed. We find that for the detection limits of the XDF field central LBGs at $z\sim 4$ predominantly reside in haloes of mass $\sim 10^{11}-10^{12}h^{-1}M_{\rm \odot}$ and that satellites reside in larger haloes of mass $\sim 10^{12}-10^{13}h^{-1}M_{\rm \odot}$. The model predicts fewer bright satellite LBGs at $z\sim4$ than is inferred from measurements of the ACF at small scales. By analysing the halo occupation distribution (HOD) predicted by the model, we find evidence that AGN feedback affects the HOD of central LBGs in massive haloes. This is a new high-redshift test of this important feedback mechanism. We investigate the effect of photometric errors in the observations on the ACF predictions. We find that the observational uncertainty in the galaxy luminosity reduces the clustering amplitude and that this effect increases towards faint galaxies, particularly on small scales. To compare properties of model with observed LBGs this uncertainty must be considered.
description: 16 pages, 13 figures, accepted for publication in MNRAS
title: Doppler ultrasound in Budd-Chiari syndrome.
Creators: name: Oliveira, Catarina
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Education and training
subject: Diagnostic procedure
subject: Ultrasound-Spectral Doppler
subject: Ultrasound-Power Doppler
subject: Ultrasound-Colour Doppler
subject: Liver

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To review Budd-Chiari Syndromephysiopathology. To describe the Doppler ultrasoundimaging findings in Budd-Chiari...
Additional file 2 of Communication during telemedicine consultations in general practice: perspectives from general practitioners and their patients
Creators: name: Nguyen, Amy D
name: White, Sarah J.
name: Tse, Tim
name: Cartmill, John A.
name: Roger, Peter
name: Hatem, Sarah
name: Willcock, Simon M.
Publisher: name: figshare
Year: 2024
Subjects: Cell Biology
Biological Sciences not elsewhere classified
Science Policy
Mental Health

description: Supplementary Material 2
Adjunctive Treatments to Office-Based Buprenorphine for Addiction-Related Outcomes: A Systematic Review of the Evidence
Creators: name: Wyse, Jessica
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: adjunctive interventions
subject: buprenorphine
subject: opioid use disorder
subject: primary care

description: This is a registration for a systematic review in process.
Toeplitz flows and model sets
Creators: name: Baake, Michael
name: Jaeger, Tobias
name: Lenz, Daniel
Publisher: name: arXiv
Year: 2015
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 52C23, 37B50, 37B10

description: We show that binary Toeplitz flows can be interpreted as Delone dynamical systems induced by model sets and analyse the quantitative relations between the respective system parameters. This has a number of immediate consequences for the theory of model sets. In particular, we use our results in combination with special examples of irregular Toeplitz flows from the literature to demonstrate that irregular proper model sets may be uniquely ergodic and do not need to have positive entropy. This answers questions by Schlottmann and Moody.
description: 9 pages, slightly updated version
BRAINLINKS – Families: Functional connectome similarity within families
Creators: name: Crone, Eveline
name: Klapwijk, Eduard
name: van de Groep, Suzanne
name: Brandner, Philip
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Cognitive Neuroscience
subject: Life Sciences
subject: Neuroscience and Neurobiology
subject: Social and Behavioral Sciences
subject: Systems Neuroscience
subject: Psychology
subject: FOS: Psychology
subject: adolescence
subject: brain development
subject: fMRI
subject: social neuroscience

description: Individual resting-state fMRI data can be used to create a functional connectome. These connectome fingerprints are robust across time and within individuals. In this study, we are investigating functional connectome similarity within 51 Dutch families.
The Galois Action and a Spin Invariant for Prym-Teichmüller Curves in Genus 3
Creators: name: Zachhuber, Jonathan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Algebraic Geometry (math.AG)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: Given a Prym-Teichmüller curve in $\mathcal{M}_3$, this note provides an invariant that sorts the cusp prototypes of Lanneau and Nguyen by component. This can be seen as an analogue of McMullen's genus $2$ spin invariant, although the source of this invariant is different. Moreover, we describe the Galois action on the cusps of these Teichmüller curves, extending the results of Bouw and Möller in genus $2$. We use this to show that the components of the genus $3$ Prym-Teichmüller curves are homeomorphic.
description: 10 pages, 1 figure; v2: Minor improvements
title: The Prognostic and Diagnostic Value of Whole-Body Diffusion-Weighted MRI and 18F-FDG PET/CT in Lymphoma Patients
Creators: name: Mosavi, Firas
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: PET-CT
subject: MR
subject: Molecular imaging
subject: Lymph nodes
subject: Outcomes analysis
subject: Cancer

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Positron emission tomography/computed tomography (PET/CT), with 18 F-fluorodeoxyglucose ( 18 F-FDG), combines the metabolic information of PET with anatomical details of CT. It is proven to be more accurate than CT and PET, taken alone, in the...
Predicting Effects of Urban Design on Public Health: A Case Study in Raleigh, North Carolina
Creators: name: Dennerlein, Taylor L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: The rise in obesity and chronic diseases in the United States has been partially attributed to decreased physical activity from lack of pedestrian-friendly urban designs. This project presents a framework to measure the health benefits of neighborhood designs that increase physical activity. We constructed a model to simulate pedestrian behavior under a new small-area plan intended to promote non-motorized transportation in a neighborhood (population 10,400) in Raleigh, North Carolina. We estimate that proposed built environment modifications would increase the time neighborhood residents spend walking for transportation by 27 (95% Cl: 6-75) minutes per day and decrease the number of premature deaths by 6 (95% Cl: 1-13) and the cases of four chronic diseases by 680 (95% Cl: 170-1400) annually by 2040. This project is the first to quantify health impacts of urban design in North Carolina and shows that simple urban design changes can significantly improve the health of communities.
The partial captivity condition for U(1) extensions of expanding maps on the circle
Creators: name: Nakano, Yushi
name: Tsujii, Masato
name: Wittsten, Jens
Publisher: name: arXiv
Year: 2015
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37D30, 37C20

description: This paper concerns the compact group extension \[ f:\mathbb{T}^2\to \mathbb{T}^2,\quad f (x,s)= (E(x), s+τ(x)\ \text{mod }1) \] of an expanding map $E:\mathbb{S}^1\to \mathbb{S}^1$. The dynamics of $f$ and its stochastic perturbations have previously been studied under the so-called partial captivity condition. Here we prove a supplementary result that shows that partial captivity is a $\mathscr{C}^r$ generic condition on $τ$, once we fix $E$.
description: 9 pages; minor changes
title: To evaluate the geometrical variation of liver stiffness in MR Elastography
Creators: name: Li, Wing Wa
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Cirrhosis
subject: Diagnostic procedure
subject: Elastography
subject: MR
subject: Liver

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The management of chronic liver disease depends on the degree of liver fibrosis, and therefore, the assessment of the degree of liver fibrosis is important for choosing a therapeutic strategy and for determining the prognosis (1-3). Measurement of...
ATLAS Diboson Excess from Stueckelberg Mechanism
Creators: name: Feng, Wan-Zhe
name: Liu, Zuowei
name: Nath, Pran
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We discuss the diboson excess seen by the ATLAS detector around 2 TeV in the LHC run I at $\sqrt{s}=8$ TeV. We explore the possibility that such an excess can arise from a $Z'$ boson which acquires mass through a $U(1)_X$ Stueckelberg extension. The corresponding $Z'$ gauge boson is leptophobic with a mass of around 2 TeV and has interactions with $SU(2)_L$ Yang-Mills fields and gauge fields of the hypercharge. The analysis predicts $Z'$ decays into $WW$ and $ZZ$ as well as into $Zγ$. Further three-body as well as four-body decays of the $Z'$ such as $WWZ, WWγ, WWZZ$ etc are predicted. In the analysis we use the helicity formalism which allows us to exhibit the helicity structure of the $Z'$ decay processes in an transparent manner. In particular, we are able to show the set of vanishing helicity amplitudes in the decay of the massive $Z'$ into two vector bosons due to angular momentum conservation with a special choice of the reference momenta. The residual set of non-vanishing helicity amplitudes are identified. The parameter space of the model compatible with the diboson excess seen by the ATLAS experiment at $\sqrt s=8$ TeV is exhibited. Estimate of the diboson excess expected at $\sqrt s= 13$ TeV with 20 fb$^{-1}$ of integrated luminosity at LHC run II is also given. It is shown that the $WW$, $ZZ$ and $Zγ$ modes are predicted to be in the approximate ratio $1:\cos^2θ_W (1+ α\tan^2θ_W)^2/2: (1-α)^2\sin^2θ_W/2$ where $α$ is the relative strength of the couplings of hypercharge gauge fields to the couplings of the Yang-Mills gauge fields. Thus observation of the $Zγ$ mode as well as three-body and four-body decay modes of the $Z'$ will provide a definite test of the model and of a possible new source of interaction beyond the standard model.
description: 12 pages, 6 figures
title: Foraminal steroid injections performed under CT control: a retrospective study
Creators: name: Alberti, Nicolas
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Interventional non-vascular
subject: Musculoskeletal spine
subject: Neuroradiology spine
subject: CT
subject: Complications
subject: Inflammation
subject: Ischaemia / Infarction

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: 12 cases of paraplegia of acute onset following image-guided selective steroid injection of the lumbar epidural space have been reported since 2002 in the English literature. Among these cases, six come from Paris area centers. This also raises the...
Models of the Thermal Evolution of the Intergalactic Medium After Reionization
Creators: name: Sanderbeck, Phoebe R. Upton
name: D'Aloisio, Anson
name: McQuinn, Matthew J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Recent years have brought more precise temperature measurements of the low-density intergalactic medium (IGM). These new measurements constrain the processes that heated the IGM, such as the reionization of H I and of He II. We present a semi-analytical model for the thermal history of the IGM that follows the photoheating history of primordial gas. Our model adopts a multizone approach that, compared to previous models, more accurately captures the inhomogeneous heating and cooling of the IGM during patchy reionization. We compare our model with recent temperature measurements spanning z = 1.6-4.8, finding that these measurements are consistent with scenarios in which the He II was reionized at z = 3-4 by quasars. Significantly longer duration or higher redshift He II reionization scenarios are ruled out by the measurements. For hydrogen reionization, we find that only low-redshift and high-temperature scenarios are excluded. For example, a model in which the IGM was heated to 30 000 K when an ionization front passed, and with hydrogen reionization occurring over 6 < z < 9, is ruled out. Finally, we place constraints on how much heating could owe to TeV blazars, cosmic rays, and other non-standard mechanisms. We find that by z = 2, a maximum of 1 eV of additional heat could be injected per baryon over standard photoheating-only models, with this limit becoming 3.
description: 13 pages, 11 figures, published
title: Atherosclerotic middle cerebral artery plaque and subsequent stroke: a high-resolution MRI study
Creators: name: YANG, WANQUN
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Vascular
subject: Neuroradiology brain
subject: MR-Angiography
subject: Imaging sequences
subject: Technology assessment
subject: Ischaemia / Infarction

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To assess the reproducibility of HR-MRI for the identification of MCA atherosclerotic plaque components and quantification of stenosis; To compare the plaque characterization and vessel wall properties between symptomatic and asymptomatic...
Inactivation of Hepatitis A Virus and Other Model Viruses by Free Chlorine and Monochloramine
Creators: name: Fuji, Takashi
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1988

description: The kinetics and extent of inactivation of two strains of Hepatitis A Virus (HAV HM175 and HAV MD1) as well as three other viruses, Coxsackievirus B5 (CB5) and Coliphage MS2 and ΦX174, by 0.5 mg/l free chlorine at pH 6.0, 8.0 and 10.0 and by 10 mg/l monochloramine, pH 8.0, at 5°C in 0.01M phosphate buffer were determined. Both strains of HAV were relatively sensitive 0.5 mg/l free chlorine but relatively resistant to 10 mg/l monochloramine. Compared to the HAV strains, CB5 was quite resistant to inactivation by free chlorine but similar in resistance to inactivation by monochloramine. The coliphages were, in general, more sensitive to inactivation by free chlorine than the enteric viruses at pH 6.0 and 8.0. ΦX174 was inactivated the most rapidly of all the viruses tested and showed a sensitivity to inactivation at pH 10.0 intermediate between that of HAV and CBS. MS2 was more sensitive to inactivation by free chlorine at pH 6.0 than the HAV strains, but at the higher pH's, was inactivated at similar or slightly slower rates than that of the HAV. ΦX174 was inactivated most rapidly of all viruses tested by 10 mg/1 monochloramine, pH 8,0, while MS2 was the most resistant to inactivation under these conditions. KEY WORDS: Hepatitis A Virus, Coxsackievirus, Enterovirus, Coliphages, Disinfection, Inactivation, Free Chlorine, Monochloramine, Water.
title: Artery specific non-contrast enhanced magnetic resonance angiography of the cerebral vasculature using pseudo-continuous arterial spin labeling
Creators: name: Lindner, Thomas
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Haemodynamics / Flow dynamics
subject: Physics
subject: Imaging sequences
subject: Experimental investigations
subject: MR-Angiography
subject: Vascular
subject: Neuroradiology brain
subject: MR physics

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: As the development of nephrogenic systemic fibrosis is strongly associated with the use of Gadolinium contrast agents [1, 2, 3] in contrast enhanced MR imaging, it is desired to develop MR angiographic methods without the need of any external...
title: PV patency and integrity problem percutaneal management by stenting, endoluminal RFA and angioplasty or endoluminal RFA and stenting
Creators: name: Mizandari, Malkhaz
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Interventional vascular
subject: Liver
subject: Vascular
subject: Percutaneous
subject: Ultrasound
subject: Fluoroscopy
subject: Ablation procedures
subject: Angioplasty
subject: Stents

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: PV angioplasty by balloon dilatation and stenting is accepted low-invasive technique for recanalization of portal vein strictures, caused by pancreatic and biliary neoplasms (1, 2,7,10), benign stenosis (5,6), postsurgery complications (9). Few...
Analysis of a heterogeneous kinetic model for traffic flow
Creators: name: Puppo, Gabriella
name: Semplice, Matteo
name: Tosin, Andrea
name: Visconti, Giuseppe
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 35Q20, 65Z05, 90B20

description: In this work we extend a recent kinetic traffic model to the case of more than one class of vehicles, each of which is characterized by few different microscopic features. We consider a Boltzmann-like framework with only binary interactions, which take place among vehicles belonging to the various classes. Our approach differs from the multi-population kinetic model based on a lattice of speeds because here we assume continuous velocity spaces and we introduce a parameter describing the physical velocity jump performed by a vehicle that increases its speed after an interaction. The model is discretized in order to investigate numerically the structure of the resulting fundamental diagrams and the system of equations is analyzed by studying well posedness. Moreover, we compute the equilibria of the discretized model and we show that the exact asymptotic kinetic distributions can be obtained with a small number of velocities in the grid. Finally, we introduce a new probability law in order to attenuate the sharp capacity drop occurring in the diagrams of traffic.
description: 31 pages
title: Long Term Follow-up Results of T1 Hyperintense Nodules in Cirrhoic Livers
Creators: name: Haliloglu, Nuray
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Abdomen
subject: Liver
subject: MR
subject: Comparative studies
subject: Imaging sequences
subject: Cirrhosis

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Cirrhotic livers are characterized by advanced hepatic fibrosis and the formation of hepatocellular nodules such as regenerative nodules, low grade and high grade dysplastic nodules and hepatocellular cancer (HCC). Patients with cirrhotic livers...
Settling Characteristics of Modified Rectangular Prisms
Creators: name: Sheaffer, Alan W.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1985

description: Numerous researchers have attempted to develop a general expression to predict drag forces on orthotropic shapes. In a recent doctoral project, David Johnson developed an empirical equation to estimate the shape resistance factor, K, for rectangular prisms. In this study, Johnson's equation is tested using orthotropic shapes different from those in the developmental data set. Prisms with truncated corners, perforated prisms, and prisms with length-to-width ratios > 5 were settled in viscous oil to obtain observed K values for comparison with values estimated by the equation. For the prisms with truncated corners and perforated prisms, the estimated K values were within 9% of observed values. Experiments using elongated prisms showed that differences between observed and estimated K values increased proportionally to a shape number, [A2/(BC)]2, where A is the vertical dimension, and B and C are horizontal dimensions of the prism.
title: Translumbar haemodialyisis catheter placement. Single center 54 months experience at hospital universitario San Ignacio
Creators: name: Romero Jaramillo, Alejandro
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Interventional vascular
subject: Vascular
subject: Catheter arteriography
subject: Venous access
subject: Education and training

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The aims and objectives of the present study were to review literature, describe the technique and report the experience of 54 months in the making of this procedure. Introduction The patients has exhausted traditional venous access is a challenge...
Quantum Monte Carlo Calculations for Carbon Nanotubes
Creators: name: Luu, Thomas
name: Lähde, Timo A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We show how lattice Quantum Monte Carlo can be applied to the electronic properties of carbon nanotubes in the presence of strong electron-electron correlations. We employ the path-integral formalism and use methods developed within the lattice QCD community for our numerical work. Our lattice Hamiltonian is closely related to the hexagonal Hubbard model augmented by a long-range electron-electron interaction. We apply our method to the single-quasiparticle spectrum of the (3,3) armchair nanotube configuration, and consider the effects of strong electron-electron correlations. Our approach is equally applicable to other nanotubes, as well as to other carbon nanostructures. We benchmark our Monte Carlo calculations against the two- and four-site Hubbard models, where a direct numerical solution is feasible.
description: 54 pages, 16 figures, published in Physical Review B
title: Contrast-enhanced ultrasound in the study of liver abscesses
Creators: name: Revert Espí, Rafael
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Abscess
subject: Diagnostic procedure
subject: Abscess delineation
subject: Ultrasound
subject: Liver
subject: Abdomen

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The purpose of the study is the description of the findings in patients with liver abscess by ultrasound after administration of contrast and evaluate the usefulness of its...
Additional file 1 of A gender and size specific evaluation of Grammont-type inlay versus lateralizing onlay stem designs in achieving lateralization and distalization in reverse shoulder arthroplasty
Creators: name: Imiolczyk, Jan-Phillip
name: Zeid, Paula-Nevin Abu
name: Eckl, Larissa
name: Imiolczyk, Tankred
name: Gohlke, Frank
Publisher: name: figshare
Year: 2024
Subjects: Biophysics
Medicine
Biotechnology
Biological Sciences not elsewhere classified
Science Policy

description: Supplementary Material 1
title: Endovascular treatment of superior vena cava syndrome: What to be aware off.
Creators: name: Sykora, Jan
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Interventional vascular
subject: Thorax
subject: Veins / Vena cava
subject: Catheter venography
subject: CT-Angiography
subject: Angioplasty
subject: Thrombolysis
subject: Stents
subject: Outcomes
subject: Obstruction / Occlusion
subject: Neoplasia

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Stenting of the superior vena cava (SVC) for obstruction was first described by Charnsangavej et al. in 1986 [1]. Endovascular treatment (EVT) of superior vena cava syndrome (SVCS) offers simple, rapid, and safe palliation of a distressing and...
Methicillin Resistant Staphylococcus aureus in Gyms: Evaluation of Swabbing-Based Sampling Methodologies and the Levels of MSSA/MRSA on Environmental Surfaces within Recreational Exercise Facilities
Creators: name: Hatch, Joseph Everette
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: Methicillin-resistant Staphylococcus aureus (MRSA) is an emerging infectious bacterial pathogen which is a leader in the causes of nosocomial infections. Overtime, this pathogen has transitioned from association primarily with healthcare settings to association with community-acquired infections (CA-MRSA) as well. As CA-MRSA prevalence has risen, its outbreaks have been linked to common environmental sources; prompting interest in the environment as a potential means of its dissemination. To investigate this risk in gyms, four types of sampling devices were evaluated. The findings were used to create an environmental sampling protocol, with the goal of estimating the prevalence of MRSA. Sampling was by swabbing a surface area with a moistened gauze wipe, enrichment culture of recovered wipe fluid, platting of enrichment cultures on differential/selective media and colony isolation and identification. Of 8 facilities sampled, 5 had MRSA (1.69-10% prevalence) and the overall MRSA prevalence for all samples was 4.5%.
Additional file 1 of Information behaviours of people with type 2 diabetes in Kuwait: a grounded theory study
Creators: name: Meer, Zainab
name: Al-Ozairi, Ebaa
name: Fernandes, Genevie
name: Ranganathan, Sruthi
name: Patel, Jay
Publisher: name: figshare
Year: 2024
Subjects: Biological Sciences not elsewhere classified
Science Policy

description: Supplementary Material 1
Two Transiting Low Density Sub-Saturns from K2
Creators: name: Petigura, Erik A.
name: Howard, Andrew W.
name: Lopez, Eric D.
name: Deck, Katherine M.
name: Fulton, Benjamin J.
name: Crossfield, Ian J. M.
name: Ciardi, David R.
name: Chiang, Eugene
name: Lee, Eve J.
name: Isaacson, Howard
name: Beichman, Charles A.
name: Hansen, Brad M. S.
name: Schlieder, Joshua E.
name: Sinukoff, Evan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report the discovery and confirmation of two sub-Saturn planets orbiting a bright (V = 11.3), metal-rich ([Fe/H] = 0.42 $\pm$ 0.04 dex) G3 dwarf in the K2 Campaign 2 field. The planets are 5.68 $\pm$ 0.56 Earth-radii and 7.82 $\pm$ 0.72 Earth-radii and have orbital periods of 20.8851 $\pm$ 0.0003 d and 42.3633$\pm$0.0006 d, near to the 2:1 mean-motion resonance. We obtained 32 radial velocities (RVs) with Keck/HIRES and detected the reflex motion due to EPIC-203771098b and c. These planets have masses of 21.0 $\pm$ 5.4 Earth-masses and 27.0 $\pm$ 6.9 Earth-masses, respectively. With low densities of 0.63 $\pm$ 0.25 g/cc and 0.31 $\pm$ 0.12 g/cc, respectively, the planets require thick envelopes of H/He to explain their large sizes and low masses. Interior structure models predict that the planets have fairly massive cores of 17.6 $\pm$ 4.3 Earth-masses and 16.1 $\pm$ 4.2 Earth-masses, respectively. They may have formed exterior to their present locations, accreted their H/He envelopes at large orbital distances, and migrated in as a resonant pair. The proximity to resonance, large transit depths, and host star brightness offer rich opportunities for TTV follow-up. Finally, the low surface gravities of the EPIC-203771098 planets make them favorable targets for transmission spectroscopy by HST, Spitzer, and JWST.
description: 12 pages, 6 figures, 3 tables, published in ApJ. v2: text updated to ApJ version, replaced EPIC-2037 with K2-24
Secular dynamics of hierarchical multiple systems composed of nested binaries, with an arbitrary number of bodies and arbitrary hierarchical structure. First applications to multiplanet and multistar systems
Creators: name: Hamers, Adrian S.
name: Zwart, Simon F. Portegies
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present a method for studying the secular gravitational dynamics of hierarchical multiple systems consisting of nested binaries, which is valid for an arbitrary number of bodies and arbitrary hierarchical structure. We derive the Hamiltonian of the system and expand it in terms of the -- assumed to be -- small ratios $x_i$ of binary separations. At the lowest nontrivial expansion order (quadrupole order, second order in $x_i$), the Hamiltonian consists of terms which, individually, depend on binary pairs. At higher orders, in addition to terms depending on binary pairs, we also find terms which, individually, depend on more than two binaries. In general, at order $n$ in $x_i$, individual terms depend on at most $n-1$ binaries. We explicitly derive the Hamiltonian including all terms up and including third order in $x_i$ (octupole order), and including the binary pairwise terms up and including fifth order in $x_i$. These terms are orbit averaged, and we present a new algorithm for efficiently solving the equations of motion. This algorithm is highly suitable for studying the secular evolution of hierarchical systems with complex hierarchies, making long-term integrations of such systems feasible. We show that accurate results are obtained for multiplanet systems with semimajor axis ratios as large as $\approx 0.4$, provided that high-order terms are included. In addition to multiplanet systems with a single star, we apply our results to multistar systems with multiple planets.
description: Revised to match MNRAS publication. 48 pages, 36 figures
Resonant Rydberg Dressing of Alkaline-Earth Atoms via Electromagnetically Induced Transparency
Creators: name: Gaul, C.
name: DeSalvo, B. J.
name: Aman, J. A.
name: Dunning, F. B.
name: Killian, T. C.
name: Pohl, T.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We develop an approach to generate finite-range atomic interactions via optical Rydberg-state excitation and study the underlying excitation dynamics in theory and experiment. In contrast to previous work, the proposed scheme is based on resonant optical driving and the establishment of a dark state under conditions of electromagnetically induced transparency (EIT). Analyzing the driven dissipative dynamics of the atomic gas, we show that the interplay between coherent light coupling, radiative decay and strong Rydberg-Rydberg atom interactions leads to the emergence of sizeable effective interactions while providing remarkably long coherence times. The latter are studied experimentally in a cold gas of strontium atoms for which the proposed scheme is most efficient. Our measured atom loss is in agreement with the theoretical prediction based on binary effective interactions between the driven atoms.
Effect of Size Distribution in Estimating b[ext], b[scat], and b[abs] from Atmospheric Pollutant Measurements
Creators: name: Refik, Alp M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1996

description: Coefficients of extinction, scattering, and absorption are calculated using an arbritratry size distribution and physical and chemical aerosol data from the Interagency Monitoring of Protected Visual Environments (IMPROVE) and the Eastern Fine Particulate Visibility Network (EFPVN)data systems. Calculated results are compared with the measured values using linear regression analysis and correlation coefficient. The results from both data sets indicate that fairly accurate (±50%)estimates of the coefficients are possible when the size distribution is in the range of mean diameter 0.2-0.4 with geometric standard deviation 1.2-1.5
On a discretization of confocal quadrics. I. An integrable systems approach
Creators: name: Bobenko, Alexander I.
name: Schief, Wolfgang K.
name: Suris, Yuri B.
name: Techter, Jan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Differential Geometry (math.DG)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Confocal quadrics lie at the heart of the system of confocal coordinates (also called elliptic coordinates, after Jacobi). We suggest a discretization which respects two crucial properties of confocal coordinates: separability and all two-dimensional coordinate subnets being isothermic surfaces (that is, allowing a conformal parametrization along curvature lines, or, equivalently, supporting orthogonal Koenigs nets). Our construction is based on an integrable discretization of the Euler-Poisson-Darboux equation and leads to discrete nets with the separability property, with all two-dimensional subnets being Koenigs nets, and with an additional novel discrete analog of the orthogonality property. The coordinate functions of our discrete nets are given explicitly in terms of gamma functions.
description: 37 pp., 9 figures. V2 is a completely reworked and extended version, with a lot of new material
title: Small Bowel Tumors: The big five. Key imaging features using CT and MR.
Creators: name: Kramer, Gerdien
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Lymphoma
subject: Cancer
subject: Diagnostic procedure
subject: MR
subject: CT
subject: Abdomen

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To learn to differentiate the five most common small bowel tumors and its mimickers using CT and MR imaging features. To get acquainted with risk factors and clinical syndromes associated with small bowel...