cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Buckling transitions and clock order of two-dimensional Coulomb crystals
Creators: name: Podolsky, Daniel
name: Shimshoni, Efrat
name: Morigi, Giovanna
name: Fishman, Shmuel
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Crystals of repulsively interacting ions in planar traps form hexagonal lattices, which undergo a buckling instability towards a multi-layer structure as the transverse trap frequency is reduced. Numerical and experimental results indicate that the new structure is composed of three planes, whose separation increases continuously from zero. We study the effects of thermal and quantum fluctuations by mapping this structural instability to the six-state clock model. A prominent implication of this mapping is that at finite temperature, fluctuations split the buckling instability into two thermal transitions, accompanied by the appearance of an intermediate critical phase. This phase is characterized by quasi-long-range order in the spatial tripartite pattern. It is manifested by broadened Bragg peaks at new wave vectors, whose line-shape provides a direct measurement of the temperature dependent exponent $η(T)$ characteristic of the power-law correlations in the critical phase. A quantum phase transition is found at the largest value of the critical transverse frequency: here the critical intermediate phase shrinks to zero. Moreover, within the ordered phase, we predict a crossover from classical to quantum behavior, signifying the emergence of an additional characteristic scale for clock order. We discuss experimental realizations with trapped ions and polarized dipolar gases, and propose that within accessible technology, such experiments can provide a direct probe of the rich phase diagram of the quantum clock model, not easily observable in condensed matter analogues. Therefore, this works highlights the potential for ionic and dipolar systems to serve as simulators for complex models in statistical mechanics and condensed matter physics.
description: 18 pages, 3 figures
An Evaluation of Employee Exposures to Organic Solvents at a Printing Facility
Creators: name: Jin, Wei
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1998

description: Employee exposures to four organic solvents (toluene, methylethylketone, isopropylacetate and n- propylacetate) were sampled at a printing facility in Durham, North Carolina. Workers were divided into four groups by their job title, job function, and the chemical exposure similarities. Each group was sampled twice over 8 hour long shifts. Two strategies were used to compare the employee exposures to the Occupational Exposure Limits(OEL). The first one is the conventional method, commonly used for regulatory compliance verification, which evaluates each individual exposure against the OEL, for each organic solvent and for the solvent mixture. The second strategy is to determine, for a group of workers in any given day, whether the probability of overexposure is acceptable. Here overexposure is defined as the likelihood that a randomly selected worker's true mean exposure exceeds the OEL. Though both strategies indicate that workers' exposures are acceptable, the later statistical method does provide more information with which to evaluate the hazard.
Adaptive Affinity Matrix for Unsupervised Metric Learning
Creators: name: Li, Yaoyi
name: Chen, Junxuan
name: Lu, Hongtao
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Spectral clustering is one of the most popular clustering approaches with the capability to handle some challenging clustering problems. Most spectral clustering methods provide a nonlinear map from the data manifold to a subspace. Only a little work focuses on the explicit linear map which can be viewed as the unsupervised distance metric learning. In practice, the selection of the affinity matrix exhibits a tremendous impact on the unsupervised learning. While much success of affinity learning has been achieved in recent years, some issues such as noise reduction remain to be addressed. In this paper, we propose a novel method, dubbed Adaptive Affinity Matrix (AdaAM), to learn an adaptive affinity matrix and derive a distance metric from the affinity. We assume the affinity matrix to be positive semidefinite with ability to quantify the pairwise dissimilarity. Our method is based on posing the optimization of objective function as a spectral decomposition problem. We yield the affinity from both the original data distribution and the widely-used heat kernel. The provided matrix can be regarded as the optimal representation of pairwise relationship on the manifold. Extensive experiments on a number of real-world data sets show the effectiveness and efficiency of AdaAM.
title: Purification of the water contaminated by radioactive cesium using a scallop block.
Creators: name: Ohtani, Hi-Rocky
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Experimental
subject: Radioprotection / Radiation dose
subject: Dosimetry
subject: Dosimetric comparison

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The purpose of this research is to develop the scallop block for decontaminating radioactive cesium in the raceway for agriculture. And it is a target to do the actual proof examination of the decontamination effect. The radioactive cesium emitted...
Enhancing Water Softening By Heterogeneous Nucleation
Creators: name: Mercer, Kenneth L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2002

description: The purpose of this research was to evaluate the effects of adding Procter and Gamble calcium carbonate seed crystals during water softening by chemical precipitation. The Procter and Gamble seed crystals were originally designed to improve the effectiveness of detergents. Heterogeneous nucleation, or the presence of nucleating agents such as seed crystals, lowers the free energy of crystallization in comparison to the absence of nucleating surfaces, or homogeneous nucleation. Heterogeneous nucleation can also increase the size of the precipitate, allowing it to settle more effectively from solution. Synthetic and real hard waters were used to explore the effects of adding seed crystals when softening by the addition of lime (CaO) or caustic soda(NaOH). The seed crystals used in these experiments were reagent-grade calcium carbonate, calcium carbonate prepared by a proprietary process of Procter and Gamble, and the dried softening sludge solids from two municipal water treatment facilities. On the basis of specific surface area, there was no significant difference between the performances of the Procter and Gamble seed and the reagent-grade calcite in removing calcium hardness, while the performance of the dried sludge solids differed between locations. In tests with real waters, the presence of seed crystals helped to increase the precipitation of calcium carbonate when softening with caustic soda. Natural organic matter appeared to inhibit the precipitation and removal of calcium from synthetic hard water during heterogeneous nucleation, but had no significant effect on the softening of real waters.
Intertextual, literary and intercultural influences in the poetry of Perveen Shakir
Creators: name: Peters, Katherine
Publisher: name: University of Derby
Year: 2017
Subjects: intertextual
literary and intercultural influences
Urdu poetry

description: This thesis explores the Urdu poetry of Perveen Shakir, a Pakistani, third-world, Muslim, female poet, in her socio-cultural, religious and political context. The entire four collections written between 1977 and 1990 are analysed in order to depict the stages of her life: girl, woman, mother and poet. The collections were written during extreme political pressure of martial law, dictatorship and the Islamisation of General Zia’s regime (1977-1988). The thesis argues that Shakir, an educated self-aware Pakistani Muslim woman, is formulating new feminist ideas and concepts of individual freedom through her unconventional love poetry; in that way crossing the limits of her traditional ‘feminine’ nisvani demands, whilst she is also struggling under the extreme cultural, political and religious pressure of a Muslim society which conflicts with her liberal ‘feminist’ thinking. Shakir is constantly shifting between two positions: a traditional ‘feminine’ nisvani and a ‘feminist’ position. Influenced by her Eastern culture she clings to the traditional identity, sometimes due to her own personal choice, and sometimes under her cultural pressure, unwilling to alienate her traditional self which understands that a husband is a symbol of respect and security for a Pakistani woman. Influenced by western culture she reveals her liberal feminist voice openly writing about her sexual needs and also writing about her marginalised position from which she criticises the politics of patriarchy. This intercultural influence in the Urdu poetry of Shakir is reflected through these overlapping and co-existing positions, where she is neither a true feminist poet by western standards (anti-sexist and anti-patriarchal) nor a clear traditional ‘feminine’ nisvani. In the end, she compromises in order to survive in her Islamic culture, re-adjusting and rethinking her liberal feminist ideas. The main concern of the thesis is to explain the complex and multi-layered meanings of the term ‘woman’ in the Pakistani cultural context. The analysis has shown that in Pakistani culture the concept of self or individual freedom for a Pakistani Muslim woman is not a simple question. This study focuses on various stages of Shakir’s biographical journey employing the theoretical framework of dialogism which reveals the development of feminisms, and how they balance in the end. No critical study on Shakir from a third-world postcolonial Pakistani perspective, analysing her poetry within a theoretical framework, has been written so far, and therefore this study is an invaluable contribution to current scholarly knowledge of the discipline. This study also contributes in another way, as it is the first work in English at this level.
title: Prognostic evaluation of small-size peripheral lung cancers by fluorine-18-fluorodeoxyglucose positron emission tomography and thin-section computed tomography
Creators: name: Kishimoto, Mariko
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Cancer
subject: Outcomes analysis
subject: PET-CT
subject: CT
subject: Thorax

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The first treatment choice for early stage lung cancer is surgery. In recent years, sublobar resection (pulmonary segmentation or wide wedge resection) has been increasingly used as a substitute for traditional lobectomy because of advances in...
QCD and Jets at Hadron Colliders
Creators: name: Sapeta, Sebastian
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We review various aspects of jet physics in the context of hadron colliders. We start by discussing the definitions and properties of jets and recent development in this area. We then consider the question of factorization for processes with jets, in particular for cases in which jets are produced in special configurations, like for example in the region of forward rapidities. We review numerous perturbative methods for calculating predictions for jet processes, including the fixed-order calculations as well as various matching and merging techniques. We also discuss the questions related to non-perturbative effects and the role they play in precision jet studies. We describe the status of calculations for processes with jet vetoes and we also elaborate on production of jets in forward direction. Throughout the article, we present selected comparisons between state-of-the-art theoretical predictions and the data from the LHC.
description: 77 pages, 37 figures; v2: text developments in several places, references added, version published in Prog. Part. Nucl. Phys. 2016
The Effect of Exercise on the Nasal Absorption of Ozone in Healthy Human Adults
Creators: name: Musgrove-Wesley, Keegan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2002

description: Exercise is known to reduce nasal resistance and nitric oxide production. These changes may influence nasal uptake of ozone. Nasal ozone uptake was measured in ten healthy volunteers before and after 15 minutes of moderate, bicycle exercise. A nasal exposure system was used in which a constant airflow and constant ozone concentration (0.2 ppm) was pulled through both nostrils and out of the mouth while the subject closed their epiglottis. Nasal uptake, as a percent of ozone entering the nose, was determined by comparing a sample of ozone concentration entering the nostrils to a sample of ozone concentration exiting the mouth. Average pre-exercise uptake of ozone was 56% (±7.8) and 37% (±4.9) at 10 and 20 l/min respectively. These averages did not differ significantly from those immediately post-exercise (55% and 37%). Nasal ozone uptake increased significantly (p<0.001) with decreasing flow rate, but intersubject variability in nasal uptake could not be predicted by nasal volume, cross-sectional areas (as measured by acoustic rhinometry), or endogenous nitric oxide production. However, the percent change in ozone uptake after exercise, within an individual, was positively correlated with both 1) percent changes in nasal volume (r=0.70 at 10 l/min) and 2) percent change in the ratio of the second minimum cross-sectional area to the minimum cross-sectional area (r=0.82 at 10 l/min). These results may be useful for assessing human risk associated with ozone exposure during exercise.
title: Accuracy of hybrid iterative reconstruction for liver volumetry on computed tomography
Creators: name: Matsuura, Noriaki
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: CT
subject: Abdomen
subject: Imaging sequences
subject: Cirrhosis

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To avoid the postoperative hepatic failure, preoperative evaluation of the liver volume is essential for hepatic surgery such as living donor transplantation [1-5] and hepatic resection in cases with malignant liver tumors [6]. For approximately...
Approximating Optimal Bounds in Prompt-LTL Realizability in Doubly-exponential Time
Creators: name: Tentrup, Leander
name: Weinert, Alexander
name: Zimmermann, Martin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Computer and information sciences

description: We consider the optimization variant of the realizability problem for Prompt Linear Temporal Logic, an extension of Linear Temporal Logic (LTL) by the prompt eventually operator whose scope is bounded by some parameter. In the realizability optimization problem, one is interested in computing the minimal such bound that allows to realize a given specification. It is known that this problem is solvable in triply-exponential time, but not whether it can be done in doubly-exponential time, i.e., whether it is just as hard as solving LTL realizability. We take a step towards resolving this problem by showing that the optimum can be approximated within a factor of two in doubly-exponential time. Also, we report on a proof-of-concept implementation of the algorithm based on bounded LTL synthesis, which computes the smallest implementation of a given specification. In our experiments, we observe a tradeoff between the size of the implementation and the bound it realizes. We investigate this tradeoff in the general case and prove upper bounds, which reduce the search space for the algorithm, and matching lower bounds.
description: In Proceedings GandALF 2016, arXiv:1609.03648
Analogies in electronic properties of graphene wormhole and perturbed nanocylinder
Creators: name: Smotlacha, J.
name: Pincak, R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The electronic properties of the wormhole and the perturbed nanocylinder will be investigated using two different methods: the continuum gauge field-theory model which deals with the contin- uum approximation of the surface and the Haydock recursion method which transforms the surface into simplier structure and deals with the nearest-neighbor interactions. Furthermore, the changes of the electronic properties will be investigated for the case of enclosing the appropriate structure and possible substitutes for the encloser will be derived. Finally, possible character of the electron flux will be derived from the model based on the multiwalled nanotubes.
description: 12 pages, 9 figures, 3 tables
On the redshift distribution and physical properties of ACT-selected DSFGs
Creators: name: Su, T.
name: Marriage, T. A.
name: Asboth, V.
name: Baker, A. J.
name: Bond, J. R.
name: Crichton, D.
name: Devlin, M. J.
name: Dunner, R.
name: Farrah, D.
name: Frayer, D. T.
name: Gralla, M. B.
name: Hall, K.
name: Halpern, M.
name: Harris, A. I.
name: Hilton, M.
name: Hincks, A. D.
name: Hughes, J. P.
name: Niemack, M. D.
name: Page, L. A.
name: Partridge, B.
name: Rivera, J.
name: Scott, D.
name: Sievers, J. L.
name: Thornton, R. J.
name: Viero, M. P.
name: Wang, L.
name: Wollack, E. J.
name: Zemcov, M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present multi-wavelength detections of nine candidate gravitationally-lensed dusty star-forming galaxies (DSFGs) selected at 218GHz (1.4mm) from the ACT equatorial survey. Among the brightest ACT sources, these represent the subset of the total ACT sample lying in Herschel SPIRE fields, and all nine of the 218GHz detections were found to have bright Herschel counterparts. By fitting their spectral energy distributions (SEDs) with a modified blackbody model with power-law temperature distribution, we find the sample has a median redshift of $z=4.1^{+1.1}_{-1.0}$ (68 per cent confidence interval), as expected for 218GHz selection, and an apparent total infrared luminosity of $\log_{10}(μL_{\rm IR}/{\rm L}_\odot) = 13.86^{+0.33}_{-0.30}$, which suggests that they are either strongly lensed sources or unresolved collections of unlensed DSFGs. The effective apparent diameter of the sample is $\sqrtμd= 4.2^{+1.7}_{-1.0}$kpc, further evidence of strong lensing or multiplicity, since the typical diameter of dusty star-forming galaxies is $1.0$--$2.5$ kpc. We emphasize that the effective apparent diameter derives from SED modelling without the assumption of optically thin dust (as opposed to image morphology). We find that the sources have substantial optical depth ($τ= 4.2^{+3.7}_{-1.9}$) to dust around the peak in the modified blackbody spectrum ($λ_{\rm obs} \le 500$ $μ$m), a result that is robust to model choice.
description: 18 pages, 9 figures. Accepted to MNRAS
title: Cruveilhier-Baumgarten syndrome: anatomical and pathologic imaging of periumbilical venous network
Creators: name: Isogai, Jun
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Veins / Vena cava
subject: CT-Angiography
subject: MR-Angiography
subject: Shunts
subject: Varices

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: 1. To demonstrate normal variants of the periumbilical venous system in macroscopic anatomy based on 20 dissected cadavers. 2. To discuss and illustrate various imaging of Cruveilhier-Baumgarten syndrome observed in 20 patients on reformatted CT or...
Effects and Effectiveness of Proposed and Adopted Phase II Stormwater Management Policies in North Carolina
Creators: name: Mundt, Jennifer
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: To comply with federal regulatory requirements and to protect the quality and integrity of its surface waters, the State of North Carolina enacted legislation in August 2004 to expand the regulations on stormwater runoff. Under this law, the installation of post-construction best management practices (BMPs) is required only for development in and around 123 federally-designated municipalities. The law specifies the category of BMP that is necessary to manage increased stormwater runoff based upon the amount of impervious surface area on a developed site. Research has shown that receiving water impairments such as decreased channel stability, loss of biodiversity, and decreased water quality occur when roughly 10 percent or more of a contributing watershed is covered in impervious surfaces. There has been ongoing debate over whether this 2004 North Carolina stormwater law protects surface waters of the State. This research focuses on two specific issues of the debate: 1) the application of the law beyond the federally-designated municipalities to include whole county coverage as was recommended by the North Carolina Environmental Management Commission; and 2) the percent of impervious surface area that triggers BMP installation. This study used Geographic Information Systems (GIS) applications to investigate these issues both Statewide and in selected counties with projected population growth rates in excess of the State average. Initial analyses reveal that the 2004 Phase II stormwater legislation is most effective in protecting surface water quality from polluted runoff in counties that are already built out vis-a-vis counties undergoing increased growth and subsequent development.
title: Major Salivary Glands: Sonographic Anatomy and Pathologic Conditions
Creators: name: Papadaki, Evangelia
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Salivary glands
subject: Ultrasound
subject: Diagnostic procedure
subject: Neoplasia
subject: Inflammation
subject: Congenital

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: 1. To provide a comprehensive review of the anatomy of the salivary glands, as studied by us. 2. To overview the spectrum of thepathologic conditions that may affect the salivary glands , with emphasis on the role of...
Enhancement of Rydberg-mediated single-photon nonlinearities by electrically tuned Förster Resonances
Creators: name: Gorniaczyk, H.
name: Tresp, C.
name: Bienias, P.
name: Paris-Mandoki, A.
name: Li, W.
name: Mirgorodskiy, I.
name: Büchler, H. P.
name: Lesanovsky, I.
name: Hofferberth, S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Mapping the strong interaction between Rydberg atoms onto single photons via electromagnetically induced transparency enables manipulation of light on the single photon level and novel few-photon devices such as all-optical switches and transistors operated by individual photons. Here, we demonstrate experimentally that Stark-tuned Förster resonances can substantially increase this effective interaction between individual photons. This technique boosts the gain of a single-photon transistor to over 100, enhances the non-destructive detection of single Rydberg atoms to a fidelity beyond 0.8, and enables high precision spectroscopy on Rydberg pair states. On top, we achieve a gain larger than 2 with gate photon read-out after the transistor operation. Theory models for Rydberg polariton propagation on Förster resonance and for the projection of the stored spin-wave yield excellent agreement to our data and successfully identify the main decoherence mechanism of the Rydberg transistor, paving the way towards photonic quantum gates.
description: 7 pages main text, 3 figures, 2 pages supplemental material
The Influence of Adding Alum on Biological Phosphorus Removal and Nitrification in Sequencing Batch Reactors
Creators: name: Deng, Fei-Wen
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1987

description: One of the approach for improving reliability of biological phosphorus removal could be adding alum to activated sludge mixed liquor. Other studies of limited scope had suggested that such additions might adversely affect nitrification in the treatment system. In many plants that must meet a stringent effluent ammonia limit, that situation could cause serious problems in meeting permit requirements. A bench-scale sequencing batch reactor (SBR) experiment was conducted, using a control unit without alum addition and three units that received different dosages of alum. The results showed that: 1) Adding alum seems have no adverse effect on biological phosphorus removal, 2) the addition of alum may exert adverse effects on nitrification, and 3) acetate plays an important role in biological phosphorus removal.
title: Firs TIPS experients in the Republic of Belarus.
Creators: name: Yurlevich, Dmitriy
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Abdomen
subject: Catheter venography
subject: Angioplasty
subject: Shunts
subject: Venous access
subject: Transplantation

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Aims: Currently, the procedure of endovascular placement of intrahepatic portosystemic shunt through jugular vein called Transjugular Intrahepatic Portosystemis Shunt (TIPS) is the one of the modern methods of treatment in case of complicated liver...
Skyrmion-induced bound states in a superconductor
Creators: name: Pershoguba, Sergey S.
name: Nakosai, Sho
name: Balatsky, Alexander V.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider a superconductor proximity coupled to a two-dimensional ferromagnetic film with a skyrmion texture. Using the T-matrix calculations and numerical modeling we calculate the spin-polarized local density of states in the superconductor in the vicinity of the skyrmion. We predict the skyrmion bound states (SBS) that are induced in the superconductor, similar to the well-known Yu-Shiba-Rusinov (YSR) states. The SBS wavefunctions have spatial power law decay. Presence of the SBS suggests the mechanism by which superconductivity could facilitate an effective long-range interaction between skyrmions when their SBS wavefunctions overlap.
description: 9 pages, 5 figures; Corresponds to published version
title: ”Now you see it, now you don`t!” - A pictorial review of ultrasound artifacts
Creators: name: Calin, Adriana
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Education and training
subject: Artifacts
subject: Technical aspects
subject: Physics
subject: Education
subject: Ultrasound-Colour Doppler
subject: Ultrasound
subject: Ultrasound physics

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To enlist the assumptions of the ultrasound beam To depict the most commonly encountered artifacts To explain the physical principles that lead to development of...
Status and Trends of State Park Funding in North Carolina and the Southeast
Creators: name: Puterbaugh, Parke E.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1996

description: North Carolina's state parks system has been chronically underfunded since its creation in 1916. Systemwide plans identify nearly $250 million in capital improvements and land acquisition needs in existing parks. Until 1993, state parks received inconsistent and usually meager appropriations from the General Assembly. Nationally, North Carolina has for decades ranked at or near the bottom in terms of per capita spending for state parks. Compared to 12 other Southeast states over the period 1989-1994, North Carolina finished at or near the bottom on all funding-related indices. A $35 million bond issue in 1993 and the approval of a dedicated source of funding in 1995 - the state's share of the real-estate transfer tax - will remedy the parks system's most pressing needs and provide a dependable revenue stream. Yet North Carolina will still rank low in per capita spending, partly because that statistic is computed from operating expenditures and North Carolina's parks are geared toward natural-resource preservation rather than providing costly, resort-style amenities.
title: Radiofrequency thermal ablation (RTA) is a highly effective therapeutic approach in the treatment of nodular goiter
Creators: name: Spiezia, Stefano
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Endocrine disorders
subject: Ablation procedures
subject: Percutaneous
subject: Thyroid / Parathyroids

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Thyroid nodular goiter is very common in the general population. The treatment for this condition involves levothyroxine, radioiodine as well as surgery for large goiters in patients with compressive symptoms. In recent years, a new therapeutic...
Linear response to leadership, effective temperature and decision making in flocks
Creators: name: Pearce, D. J. G.
name: Giomi, L.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Large collections of autonomously moving agents, such as animals or micro-organisms, are able to 'flock' coherently in space even in the absence of a central control mechanism. While the direction of the flock resulting from this critical behavior is random, this can be controlled by a small subset of informed individuals acting as leaders of the group. In this article we use the Vicsek model to investigate how flocks respond to leadership and make decisions. Using a combination of numerical simulations and continuous modeling we demonstrate that flocks display a linear response to leadership that can be cast in the framework of the fluctuation-dissipation theorem, identifying an 'effective temperature' reflecting how promptly the flock reacts to the initiative of the leaders. The linear response to leadership also holds in the presence of two groups of informed individuals with competing interests, indicating that the flock's behavioral decision is determined by both the number of leaders and their degree of influence.
description: 8 pages (incl. supplementary information), 8 figures, Supplementary movies can be found at http://wwwhome.lorentz.leidenuniv.nl/~giomi/sup_mat/20151108/
Orbital support and evolution of flat bar profiles (shoulders)
Creators: name: Beraldo e Silva, Leandro
name: Debattista, Victor P.
name: Anderson, Stuart
name: Valluri, Monica
name: Erwin, Peter
name: Daniel, Kathryne
name: Deg, Nathan
Publisher: name: Zenodo
Year: 2023

description: Many barred galaxies exhibit upturns (shoulders) in their bar major-axis density profile. In this talk, I show the results of an investigation of the orbital support and evolution of shoulders via frequency analyses of orbits in simulations, confirming that x1-looped orbits are the main shoulder-supporting orbits. I also show that these orbits appear at the ILR, $(\Omega_\varphi - \Omega_P)/\Omega_R=1/2$, with vertical-to-radial frequency ratios $1 \lesssim\Omega_z/\Omega_R \lesssim 3/2$ (vertically warm orbits). Finally, I also discuss the role of vertical resonances (mainly the vILR, $(\Omega_\varphi - \Omega_P)/\Omega_z=1/2$) in perturbing the x1-looped orbits, making them less shoulder-supporting, and how this perturbation is important to the evolution of, not only shoulders, but also bars in general. [Seminar presented in the conference "Galactic bars: driving and decoding galaxy evolution", Granada, 3 - 7 July, 2023]
title: Abdominal CT: Intra-individual comparison between virtual monochromatic spectral and conventional polychromatic 120-kVp images obtained during the same examination
Creators: name: Yamada, Yoshitake
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Artifacts
subject: Diagnostic procedure
subject: CT
subject: Abdomen

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Introduction Polychromatic 120 kVp x-rays have been widely used as the standard acquisition condition in computed tomography (CT) ever since the introduction of CT in clinical diagnostics. The recently developed fast kVp-switching dual-energy CT...
Dermal and Inhalation Exposure to Propiconazole Among Farm Workers in North Carolina
Creators: name: Flack, Sheila
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: The purpose of this study was to assess dermal and inhalation exposure to propiconazole among farmer workers during pesticide handling (i.e., mixing, loading and crop application) and to understand which factors (e.g., environmental and behavioral) may contribute to propiconazole exposure. Dermal exposure was assessed using tape-strips applied to the skin after pesticide application. Inhalation exposure was measured using OSHA Versatile Samplers placed in the workers' breathing-zone during pesticide mixing, loading and application. The samples were quantified by gas chromatography-mass spectrometry in electron impact ionization mode and the amount of propiconazole removed by the tape strip was normalized by keratin content. Dermal exposure amounts among the participants ranged from non-detectable to 32. 1±22.6 ng/μg keratin. The breathing-zone concentrations ranged from 0.2 to 2.2 μg/m^3, and did not correlate with dermal exposure concentrations. A positive correlation was observed between ambient temperature and breathing-zone concentration (r^2=0.87). The formulation concentrations collected from spray tanks ranged from 0.2 to 1.1 g/L and these values did not correlate with the amounts detected on the skin and breathing-zone concentrations. The type of personal protective equipment and application equipment used was associated with the amount of propiconazole detected on the skin; propiconazole levels were below the limit of detection on sampled skin sites when chemical-resistant gloves, coveralls, and full face-mask were implemented. Rinsing of hands with water did not completely remove the pesticide from the skin of one individual's hand (72.1 ng/μg keratin). These results emphasize the importance of wearing chemical-resistant gloves in addition to other protective clothing such as long sleeves or coveralls.
title: Difference in signal-to-noise-ratio (SNR) from vertical to horizontal scanner position using a 0,25 Tesla Weight-bearing scanner
Creators: name: Mortensen, Frederik
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: MR physics
subject: MR
subject: Technical aspects
subject: Experimental investigations
subject: Physics
subject: Image registration

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: One obvious advantage with a weight-bearing MRI scanner is the possibility to visualise positional dependent pathology, which might be difficult to diagnose in conventional supine MRI scanners. In example supine and weight-bearing MRI of the lumbar...
title: Application of thyroid imaging reporting and data system (TI-RADS) in thyroid ultrasonography interpretation by less experienced physicians
Creators: name: Ko, Su Yeon
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Neoplasia
subject: Efficacy studies
subject: Ultrasound
subject: Thyroid / Parathyroids

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The number of diagnosed nonpalpable thyroid nodules is increasing as a consequence of the widespread use of ultrasonography (US) in health surveilance and an increase in the number of US-guided fine needle aspiration (US-FNA) being performed...
Invariant distributions and the geodesic ray transform
Creators: name: Paternain, Gabriel P.
name: Zhou, Hanming
Publisher: name: arXiv
Year: 2015
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We establish an equivalence principle between the solenoidal injectivity of the geodesic ray transform acting on symmetric $m$-tensors and the existence of invariant distributions or smooth first integrals with prescribed projection over the set of solenoidal $m$-tensors. We work with compact simple manifolds, but several of our results apply to non-trapping manifolds with strictly convex boundary.
description: 27 pages; final version, to appear in Analysis & PDE
Indicators of Non-Point Source Pollution in Surface Waters Originating from Biosolids
Creators: name: Parks, Ashley Grace
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: The primary cause of non-point source surface water pollution in the United States is agricultural runoff. Almost 50% of biosolids produced from domestic sludge are applied to agricultural fields. These biosolids hold many organic contaminants that have sorbed and accumulated into the solids from the wastewater stream during treatment. Of the many organic contaminants found in wastewater streams, nonylphenol isomers and triclosan are likely to concentrate in the biosolids due to their affinity for organic matter. Nonylphenol isomers are a biodegradation product from nonylphenol-polyethoxylates which are the major ingredients of non-ionic surfactants used in industrial and domestic settings as detergents, emulsifiers, and wetting agents. Triclosan is an antibacterial and antifungal that can be found in personal care products, children's toys, garbage bags, clothing, and kitchen utensils. Concentrations of nonylphenol isomers and triclosan in biosolids are reported from 5-1840 mg/kg and 3.6-7.4 mg/kg, respectively. This research shows the potential for these contaminants to transport as they are released into the environment through land application of biosolids and their potential to travel into nearby surface waters. Levels of nonylphenol isomers and triclosan were measured in biosolids from two wastewater treatment plants with different treatment methods and production rates of biosolids. The potential for biosolids to release the contaminants in a worst-case scenario was studied in the laboratory using batch isotherm experiments to determine the rate and quantity of partitioning from biosolids into rainwater. The rate at which the contaminants left the biosolids followed zero-order kinetics, at 14.3 mg/kg-hour for nonylphenol and 2.1 mg/kg-hour for triclosan. A field study was also conducted on a surface water body running adjacent to a site of land-applied biosolids to determine the extent of the contaminant transport after a rain event. After a short rain event, approximately 2.0 μg/L of nonylphenols were found downstream of the field application site although none were found at any sampling location upstream thus indicating their potential as an indicator of nonpoint source pollution from biosolids. In addition to examining the potential for specific organic contaminants to migrate from land-applied biosolids, the total estrogenicity of biosolids that are land-applied and the potential for estrogenicity to migrate into nearby surface waters was also examined using the Yeast Estrogen Screen. This study revealed high levels of estrogenic activity in biosolids (0.17-1.93 mg/kg) and also concentrations of estrogenicity in rainwater exposed to biosolids that increased with contact time. Consequently, organics bound to biosolids, some of which have estrogenic activity, have the potential to leach into their surrounding environment which could include surface waters during major storm events.
Meta-Analysis of Carbapenem Resistance in Acinetobacter baumannii: A Comparative Study of Community-Acquired and Hospital-Acquired Strains
Creators: name: Bernaitis L*
name: Menaka M
name: Nanditha Sree E L A
name: Ramya Bharathi M
name: Dharani S R
name: Pavithra M
Publisher: name: Zenodo
Year: 2024
Subjects: Carbapenem resistance, Acinetobacter baumannii, Community-acquired infections, Hospital-acquired infections, Meta-analysis, Resistance mechanisms.

description: Abstract: This meta-analysis investigates the prevalence and mechanisms of carbapenem resistance in Acinetobacter baumannii, comparing strains acquired in community settings to those from hospital environments. Analyzing data from multiple studies, the review identifies a notable difference in resistance patterns between community-acquired and hospital-acquired strains. Hospital-acquired strains exhibit a higher prevalence of resistance, attributed to factors such as prolonged antibiotic use and inadequate infection control measures. Mechanisms of resistance, including the production of carbapenemases and alterations in membrane permeability, are more common in hospital-acquired strains. The findings highlight the need for targeted surveillance and tailored infection control strategies in healthcare settings to address this growing threat. Recommendations for future research include exploring novel therapeutic approaches and improving resistance monitoring frameworks.
title: Eosinophilic lung diseases - what the radiologist needs to know
Creators: name: Heursen, Eva-Marie
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Pathology
subject: Laboratory tests
subject: Diagnostic procedure
subject: CT-High Resolution
subject: Conventional radiography
subject: Thorax

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To know the most important imaging findings on conventional chest radiography and High Resolution CT (HRCT) in eosinophilic lung diseases, their radiologic-pathologic correlation and the additional analytic...
MPEC 2023-O77 : DAILY ORBIT UPDATE (2023 July 25)
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Optimal Pricing to Manage Electric Vehicles in Coupled Power and Transportation Networks
Creators: name: Alizadeh, Mahnoosh
name: Wai, Hoi-To
name: Chowdhury, Mainak
name: Goldsmith, Andrea
name: Scaglione, Anna
name: Javidi, Tara
Publisher: name: arXiv
Year: 2015
Subjects: subject: Systems and Control (eess.SY)
subject: Multiagent Systems (cs.MA)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: We study the system-level effects of the introduction of large populations of Electric Vehicles on the power and transportation networks. We assume that each EV owner solves a decision problem to pick a cost-minimizing charge and travel plan. This individual decision takes into account traffic congestion in the transportation network, affecting travel times, as well as as congestion in the power grid, resulting in spatial variations in electricity prices for battery charging. We show that this decision problem is equivalent to finding the shortest path on an "extended" transportation graph, with virtual arcs that represent charging options. Using this extended graph, we study the collective effects of a large number of EV owners individually solving this path planning problem. We propose a scheme in which independent power and transportation system operators can collaborate to manage each network towards a socially optimum operating point while keeping the operational data of each system private. We further study the optimal reserve capacity requirements for pricing in the absence of such collaboration. We showcase numerically that a lack of attention to interdependencies between the two infrastructures can have adverse operational effects.
description: Submitted to IEEE Transactions on Control of Network Systems on June 1st 2015
title: Prevalence of Deep Vein Thrombosis diagnosed by Ultrasound Doppler examination in patients referred from the Emergency Department
Creators: name: Gaitini, Diana
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Veins / Vena cava
subject: Ultrasound
subject: Ultrasound-Colour Doppler
subject: Ultrasound-Spectral Doppler
subject: Diagnostic procedure
subject: Safety
subject: Embolism / Thrombosis

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The management of patients with suspected deep vein thrombosis (DVT) raises a dilemma since symptoms and signs of DVT are not specific, and other pathologies may mimic DVT (1). Ultrasound Doppler (USD) is considered the first line test for the...
[F.08.1.008.] La campagne présidentielle - Tixier-Vignancour parle
Creators: name: Le Pen, Jean-Marie (1928-....)
Publisher: name: École des Hautes Études en Sciences Sociales; Société d'études et de relations publiques
Year: 2023
Subjects: http://www.idref.fr/027299031/id
http://www.idref.fr/027439232/id
http://www.idref.fr/03470499X/id

description: ""@fr
Characterization of Particulate Emissions from Burning Incense and Comparison of Measurement Methods
Creators: name: Jetter, James J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2002

description: Burning incense emits fine particulate matter that may be harmful to human health. Emissions of particulate matter were measured for 23 different types of incense using a cyclone/filter method. Emission rates for PM[25] (particulate matter less than 2.5 μm in aerodynamic diameter) ranged from 7 to 202 mg/hr, and PM[25] emission factors ranged from 5 to 56 mg/g of incense burned. Particle size distributions by mass measured with an ELPI (electrical low pressure impactor) typically ranged from approximately 0.06 to 2.5 μm in aerodynamic diameter, with peak values between 0.26 and 0.65 μm. An indoor air quality model showed that indoor concentrations of PM[25] can far exceed the outdoor concentrations specified by the U.S. EPA's NAAQS (National Ambient Air Quality Standards). Incense smoke contains semi-volatile particulate matter that may be measured more effectively using an ESP (electrostatic precipitator) method. A comparison of methods showed that semi volatile PM concentrations measured using the ESP method were significantly higher than those measured using the filter method.
title: CT evaluation of gastrointestinal tract perforation by ingested fish bone.
Creators: name: Muñoz Carrasco, Rafaela
Publisher: name: European Congress of Radiology
Year: 2014
Subjects: subject: Foreign bodies
subject: Diagnostic procedure
subject: CT
subject: Abdomen

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To review the CT findings of gastrointestinal perforations by ingested fish bones. To become familiar with the CT appearance of fish bones. To increase the level of awareness that allows a correct preoperative...