cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Docosahexaenoic acid in plasma phosphatidylcholine may be a potential marker for in vivo phosphatidylethanolamine N-methyltransferase activity in humans
Creators: name: Da Costa, Kerry Ann
name: Fischer, Leslie M.
name: Zeisel, Steven H.
name: Sanders, Lisa M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: Background: Choline is an essential nutrient for humans, and part of this requirement is met by endogenous synthesis catalyzed by hepatic phosphatidylethanolamine N-methyltransferase (PEMT). PEMT activity is difficult to estimate in humans because it requires a liver biopsy. Previously, we showed that mice that lack functional PEMT have dramatically reduced concentrations of docosahexaenoic acid (DHA; 22:6n−3) in plasma and of liver phosphatidylcholine (PtdCho)—a phospholipid formed by PEMT.
Surface modification of MWCNT and its influence on properties of paraffin/MWCNT nanocomposites as phase change material
Creators: name: Avid, Arezoo
name: Jafari, Seyed Hassan
name: Khonakdar, Hossein Ali
name: Ghaffari, Mehdi
name: Krause, Beate
name: Pötschke, Petra
Publisher: name: Hoboken, NJ [u.a.] : Wiley InterScience
Year: 2020
Subjects: subject: differential scanning calorimetry (DSC)
subject: microscopy
subject: structure-property relationships
subject: thermal properties
subject: thermoplastics
subject: 540

description: Multiwalled carbon nanotubes (MWCNTs) were modified by an organo-silane in order to improve their dispersion state and stability in paraffin wax. A family of paraffin-based phase change material (PCM) composites filled with MWCNTs was prepared with different loadings (0, 0.1, 0.5, and 1 wt%) of pristine MWCNTs and organo-silane modified MWCNTs (Si-MWCNT). Structural analyses were performed by means of Fourier transform infrared (FTIR), scanning electron microscopy (SEM), and rheological studies using temperature sweeps. Moreover, phase change transition temperatures and heat of fusion as well as thermal and electrical conductivities of the developed PCM nanocomposites were determined. The SEM micrographs and FTIR absorption bands appearing at approximately 1038 and 1112 cm−1 confirmed the silane modification. Differential scanning calorimetery (DSC) results indicate that the presence of Si-MWCNTs leads to slightly favorable enhancement in the energy storage capacity at the maximum loading. It was also shown that the thermal conductivity of the PCM nanocomposites, in both solid and liquid phases, increased with increasing the MWCNT content independent of the kind of MWCNTs by up to about 30% at the maximum loading of MWCNTs. In addition, the modification of MWCNTs made the samples completely electrically nonconductive, and the electrical surface resistivity of the PCMs containing pristine MWCNTs decreased with increasing MWCNTs loading. Furthermore, the rheological assessment under consecutive cyclic phase change demonstrated that the samples containing modified MWCNTs are more stable compared to the PCM containing pristine MWCNTs. © 2019 Wiley
New readout and data-acquisition system in an electron-tracking Compton camera for MeV gamma-ray astronomy (SMILE-II)
Creators: name: Mizumoto, Tetsuya
name: Matsuoka, Yoshihiro
name: Mizumura, Yoshitaka
name: Tanimori, Toru
name: Kubo, Hidetoshi
name: Takada, Atsushi
name: Iwaki, Satoru
name: Sawano, Tatsuya
name: Nakamura, Kiseki
name: Komura, Shotaro
name: Nakamura, Shogo
name: Kishimoto, Tetsuro
name: Oda, Makoto
name: Miyamoto, Shohei
name: Takemura, Taito
name: Parker, Joseph D.
name: Tomono, Dai
name: Sonoda, Shinya
name: Miuchi, Kentaro
name: Kurosawa, Shunsuke
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: For MeV gamma-ray astronomy, we have developed an electron-tracking Compton camera (ETCC) as a MeV gamma-ray telescope capable of rejecting the radiation background and attaining the high sensitivity of near 1 mCrab in space. Our ETCC comprises a gaseous time-projection chamber (TPC) with a micro pattern gas detector for tracking recoil electrons and a position-sensitive scintillation camera for detecting scattered gamma rays. After the success of a first balloon experiment in 2006 with a small ETCC (using a 10$\times$10$\times$15 cm$^3$ TPC) for measuring diffuse cosmic and atmospheric sub-MeV gamma rays (Sub-MeV gamma-ray Imaging Loaded-on-balloon Experiment I; SMILE-I), a (30 cm)$^{3}$ medium-sized ETCC was developed to measure MeV gamma-ray spectra from celestial sources, such as the Crab Nebula, with single-day balloon flights (SMILE-II). To achieve this goal, a 100-times-larger detection area compared with that of SMILE-I is required without changing the weight or power consumption of the detector system. In addition, the event rate is also expected to dramatically increase during observation. Here, we describe both the concept and the performance of the new data-acquisition system with this (30 cm)$^{3}$ ETCC to manage 100 times more data while satisfying the severe restrictions regarding the weight and power consumption imposed by a balloon-borne observation. In particular, to improve the detection efficiency of the fine tracks in the TPC from $\sim$10\% to $\sim$100\%, we introduce a new data-handling algorithm in the TPC. Therefore, for efficient management of such large amounts of data, we developed a data-acquisition system with parallel data flow.
description: 11 pages, 24 figures
Increased portion sizes from energy-dense foods affect total energy intake at eating occasions in US children and adolescents: patterns and trends by age group and sociodemographic characteristics, 1977–2006
Creators: name: Piernas, Carmen
name: Popkin, Barry M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: Background: Larger portion sizes of foods and beverages could affect overall energy intake at meals and promote overeating.
(100865) Sarah Carnick
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Characterization of the state of dispersion of carbon nanotubes in polymer nanocomposites
Creators: name: Buschhorn, Samuel T.
name: Wichmann, Malte H. G.
name: Sumfleth, Jan
name: Schulte, Karl
name: Pegel, Sven
name: Kasaliwal, Gaurav R.
name: Villmow, Tobias
name: Krause, Beate
name: Göldel, Andreas
name: Pötschke, Petra
Publisher: name: Weinheim : Wiley-VCH Verl.
Year: 2011
Subjects: subject: Carbon
subject: Dispersion
subject: Nanoparticle
subject: Polymer
subject: 540
subject: 660

description: A practical overview of possibilities and limits to characterize the state of dispersion of carbon nanotubes (CNT) in polymer based nanocomposites is given. The most important and widely available methods are discussed with practical employment in mind. One focus is the quantitative characterization of the state of dispersion in solid samples using microscopy techniques such as optical microscopy or transmission electron microscopy. For dispersions of CNTs in aqueous media, solvents or monomers a sedimentation analysis is presented. This way dispersability and dispersion state of CNTs can be assessed. Indirect methods such as electrical conductivity measurements and rheological tests, dynamic differential scanning calorimetry and mechanical test are discussed. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Methods to characterize the dispersability of carbon nanotubes and their length distribution
Creators: name: Krause, Beate
name: Mende, Mandy
name: Petzold, Gudrun
name: Boldt, Regine
name: Pötschke, Petra
Publisher: name: Weinheim : Wiley-VCH Verl.
Year: 2012
Subjects: subject: Carbon nanotubes
subject: Compounding
subject: Dispersion
subject: Morphology
subject: Nanoparticles
subject: Polymer
subject: 540
subject: 660

description: Two main properties of carbon nanotube (CNT) materials are discussed in this contribution. First, a method to characterize the dispersability of CNT materials in aqueous surfactant solutions in presented, which also allows conclusions towards the dispersability in other media, like polymer melts. On the other hand it is shown, how the length of CNTs before and after processing, e.g., after melt mixing with thermoplastics, can be quantified. Both methods are illustrated with examples and the practical relevance is shown. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Phase diagram and critical properties of Yukawa bilayers
Creators: name: Travenec, Igor
name: Samaj, Ladislav
Publisher: name: arXiv
Year: 2015
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study the ground-state Wigner bilayers of pointlike particles with Yukawa pairwise interactions, confined to the surface of two parallel hard walls at dimensionless distance $η$. The model involves as limiting cases the unscreened Coulomb potential and hard spheres. The phase diagram of Yukawa particles, studied numerically by Messina and Löwen [Phys. Rev. Lett. 91 (2003) 146101], exhibits five different staggered phases as $η$ varies from 0 to intermediate values. We present a lattice summation method using the generalized Misra functions which permits us to calculate the energy per particle of the phases with a precision much higher than usual in computer simulations. This allows us to address some tiny details of the phase diagram. Going from the hexagonal phase I to phase II is shown to occur at $η=0$, which resolves a longtime controversy. We find a tricritical point where Messina and Löwen suggested a coexistence domain of several phases which was suggested to divide the staggered rhombic phase into two separate regions. Our calculations reveal one continuous region for this rhombic phase with a very narrow connecting channel. Further we show that all second-order phase transitions are of mean-field type. We also derive the asymptotic shape of critical lines close to the Coulomb and hard-spheres limits. In and close to the hard-spheres limit, the dependence of the internal parameters of the present phases on $η$ is determined exactly.
$A_4$ Modular Flavour Model of Quark Mass Hierarchies close to the Fixed Point $τ= ω$
Creators: name: Petcov, S. T.
name: Tanimoto, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the possibility to describe the quark mass hierarchies as well as the CKM quark mixing matrix without fine-tuning in a quark flavour model with modular $A_4$ symmetry. The quark mass hierarchies are considered in the vicinity of the fixed point $τ= ω\equiv \exp({i\,2π/3})$ (the left cusp of the fundamental domain of the modular group), $τ$ being the VEV of the modulus. The model involves modular forms of level 3 and weights 6, 4 and 2, and contains eight constants, only two of which, $g_u$ and $g_d$, can be a source of CP violation in addition to the VEV of the modulus, $τ= ω+ ε$, $(ε)^* \neq ε$, $|ε|\ll 1$. We find that in the case of real (CP-conserving) $g_u$ and $g_d$ and common $τ$ ($ε$) in the down-quark and up-quark sectors, the down-type quark mass hierarchies can be reproduced without fine tuning with $|ε| \cong 0.03$, all other constants being of ${\cal O}(1)$, and correspond approximately to $1 : |ε| : |ε|^2$. The up-type quark mass hierarchies can be achieved with the same $|ε| \cong 0.03$ but allowing $g_u\sim {\cal O}(10)$ and correspond to $1 : |ε|/|g_u| : |ε|^2/|g_u|^2$. In this setting, we discuss the CKM quark mixing and CP violation.
description: 36 pages, no figure. arXiv admin note: text overlap with arXiv:2102.07488
A lipid-based nutrient supplement mitigates weight loss among HIV-infected women in a factorial randomized trial to prevent mother-to-child transmission during exclusive breastfeeding
Creators: name: Chitsulo, Phindile
name: Ellington, Sascha
name: Chigwenembe, Maggie
name: Kayira, Dumbani
name: Tohill, Beth
name: Jamieson, Denise J.
name: Mkhomawanthu, Chimwemwe
name: King, Caroline C.
name: Piwoz, Ellen G.
name: Wiener, Jeffrey
name: Tembo, Martin
name: Chasela, Charles
name: Hosseinipour, Mina C.
name: Adair, Linda
name: Bentley, Margaret E.
name: Der Van Horst, Charles
name: Kourtis, Athena P.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Background: Breastfeeding increases metabolic demands on the mother, and excessive postnatal weight loss increases maternal mortality.
Dietary patterns matter: diet beverages and cardiometabolic risks in the longitudinal Coronary Artery Risk Development in Young Adults (CARDIA) Study
Creators: name: Jacobs Jr., David R.
name: Steffen, Lyn M.
name: Popkin, Barry M.
name: Van Horn, Linda
name: Duffey, Kiyah J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Background: Although diet beverages are typically consumed to promote weight control, positive associations with increased cardiometabolic risk have been reported.
Chiral electric field in relativistic heavy-ion collisions at energies available at the BNL Relativistic Heavy Ion Collider and at the CERN Large Hadron Collider
Creators: name: Zhong, Yang
name: Yang, Chun-Bin
name: Cai, Xu
name: Feng, Sheng-Qin
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: It was proposed that the electric fields may lead to chiral separation in QGP, which is called the chiral electric separation effect. The strong electromagnetic field and the QCD vacuum can both completely be produced in the off-central nuclear-nuclear collision. We used the Wood-Saxon nucleon distribution to calculate the electric field distributions of the off-central collisions. The chiral electro field spatial distribution at Relativistic Heavy-Ion Collider (RHIC) and Large Hadron Collider (LHC) energy regions are systematically studied in this paper. Compared with magnetic field spatial distribution, electric field shows some different features in relativistic heavy-ion collisions. The dependence of the electric field produced by the thermal quark in the central position with different impact parameters on the proper time with different collision energies in the RHIC and LHC energy region are studied in this paper.
description: 12 pages,6 figures
Symmetry Protected Topological Phases and Majorana Mode in One-dimensional Quantum Walk with Boundary
Creators: name: Lam, Ho Tat
name: Yu, Yue
name: Szeto, Kwok Yip
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The topological phases in one-dimensional quantum walk can be classified by the coin parameters. By solving for the general exact solutions of bound states in one-dimensional quantum walk with boundaries specified by different coin parameters, we show that these bound states are Majorana modes with quasi-energy $E=0,π$. These modes are qualitatively different for different boundary conditions used. For two-boundary system with symmetric boundary conditions, the interaction energy between two Majorana bound states can be computed, as in the case of a finite wire. Suggestion of observing these modes are provided.
description: 6 pages, 3 pages
An Unbroken Axial Vector Current Conservation Law
Creators: name: Sharafiddinov, Rasulkhozha S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The mass, energy and momentum of the neutrino of a true flavor have an axial-vector nature. As a consequence, the left-handed truly neutral neutrino in an axial-vector field of emission can be converted into a right-handed one and vice versa. This predicts the unidenticality of masses, energies and momenta of neutrinos of the different components. Recognizing such a difference in masses, energies, momenta and accepting that the left-handed axial-vector neutrino and the right-handed antineutrino of true neutrality refer to long-lived C-odd leptons, and the right-handed truly neutral neutrino and the left-handed axial-vector antineutrino are of short-lived fermions of C-oddity, we would write a new CP-even Dirac equation taking into account the flavor symmetrical axial-vector mass, energy and momentum matrices. Their presence explains the spontaneous mirror symmetry violation, confirming that an axial-vector current conservation law has never violated. They reflect the availability of a mirror Minkowski space in which a neutrino is characterized by left as well as by right space-time coordinates. Therefore, it is not surprising that whatever the main purposes experiments about a quasielastic axial-vector mass say in favor of an axial-vector mirror Minkowski space-time.
description: 9 pages, LaTex, Published version in IJTP
Conformal Galilean Spin-3 Gravity in 3d
Creators: name: Lovrekovic, I.
name: Schaefer, K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider Galilean limit of conformal algebra for spin-2 and spin-3 fields, and study the gauge theory of these algebras. We analyze the equations of motion and obtain the spectra of the theories.
description: 20 pages
Achieving electrical conductive tracks by laser treatment of non-conductive polypropylene/polycarbonate blends filled with MWCNTs
Creators: name: Liebscher, Marco
name: Krause, Beate
name: Pötschke, Petra
name: Barz, Andrea
name: Bliedtner, Jens
name: Möhwald, Michael
name: Letzsch, Alexander
Publisher: name: Weinheim : Wiley-VCH
Year: 2014
Subjects: subject: carbon nanotubes
subject: conductivity
subject: laser treatment
subject: mid
subject: polymer blends
subject: 540

description: Electrical non-conductive polymer blends consisting of a polypropylene (PP) matrix and dispersed particles of polycarbonate (PC) were melt compounded with 3 wt.% multiwalled carbon nanotubes (MWCNTs) loading and processed into plates by injection molding. The morphological analysis confirmed the selective localization of the MWCNTs in the PC component. By local irradiation with a CO2 laser beam, depending on the laser conditions, conductive tracks with dimensions of about 2 mm width, 80 to 370 μm depth and line resistances as low as 1.5 kΩ · cm-1 were created on the surface of the non-conductive plates. The factors affecting the line resistance are the PC content, the laser speed and laser power, as well as laser direction with respect to the melt flow direction. After the irradiation an enrichment of MWCNTs in the laser lines was detected indicating that conductive paths were generated by percolation of nanotubes selectively within these lines in otherwise non-conductive plates. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
(100866) Isabella Carnick
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Energy Transport for Thick Holographic Branes
Creators: name: Bachas, Constantin
name: Baiguera, Stefano
name: Chapman, Shira
name: Policastro, Giuseppe
name: Schwartzman, Tal
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Universal properties of two-dimensional conformal interfaces are encoded by the flux of energy transmitted and reflected during a scattering process. We develop an innovative method that allows us to use results for the energy transmission in thin-brane holographic models to find the energy transmission for general smooth domain-wall solutions of three-dimensional gravity. Our method is based on treating the continuous geometry as a discrete set of branes. As an application, we compute the transmission coefficient of a Janus interface in terms of its deformation parameter.
description: 7 pages, 3 figures; v2: journal version
Energy intake and expenditure during sedentary screen time and motion-controlled video gaming
Creators: name: Lyons, Elizabeth J.
name: Tate, Deborah F.
name: Ward, Dianne S.
name: Wang, Xiaoshan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Background: Television watching and playing of video games (VGs) are associated with higher energy intakes. Motion-controlled video games (MC) may be a healthier alternative to sedentary screen-based activities because of higher energy expenditures, but little is known about the effects of these games on energy intakes.
"O`ZBEKISTON TEMIR YO`LLARI" A.J YUQORI TEZLIK TEMIR YO`LLARDA HOSIL BO`LADIGAN TO`LQINLARNI TAHLIL QILISH
Creators: name: Samandarov, Xushnudbek
name: Choriyev, Rustam
Publisher: name: Zenodo
Year: 2023

description: Maqolada yuqori tezlikka mo`ljallangan temir yo`llarda vaqt o`tishi bilan hosil bo`ladigan to`lqinlarni o`rganish va ularni bartaraf etish vazifalari haqida bayon qilingan.
Hybrid conductive filler/polycarbonate composites with enhanced electrical and thermal conductivities for bipolar plate applications
Creators: name: Naji, Ahmed
name: Krause, Beate
name: Pötschke, Petra
name: Ameli, Amir
Publisher: name: Manchester, NH : Wiley
Year: 2019
Subjects: subject: Carbon fibers
subject: Carbon nanotubes
subject: Compression molding
subject: Conducting polymers
subject: Electric conductivity
subject: Fillers
subject: Fuel cells
subject: Percolation (computer storage)
subject: Percolation (fluids)
subject: Plastic products
subject: Solvents
subject: 540
subject: 660

description: Conductive polymer composites (CPCs) with high electrical and thermal conductivities are demanded for bipolar plates of fuel cells. In this work, CPCs of polycarbonate (PC) filled with carbon nanotube (CNT), carbon fiber (CF), graphite (G), and their double and triple hybrids were prepared using solution casting method followed by compression molding. The results showed that the electrical percolation thresholds for the PC-CNT and PC-CF were ~1 wt% and ~10 wt%, respectively, while no clear threshold was found for PC-G composites. Addition of 3–5 wt% CNT improved the electrical conductivity of PC-CF and PC-G systems up to 6 orders of magnitude and enhanced the thermal conductivity as much as 65%. The results of triple hybrid CPCs (with constant loading of 63 wt%) indicated that the combination of highest electrical and thermal conductivities is achieved when the CF and CNT loadings were near their percolation thresholds. Therefore, a triple filler system of 3 wt% CNT, 10 wt% CF, and 50 wt% G resulted in a composite with the through-plane and in-plane electrical conductivity, and thermal conductivity values of 12.8 S/cm, 8.3 S/cm, and 1.7 W/m•K, respectively. The results offer a combination of properties surpassing the existing values and suitable for high-conductivity applications such as bipolar plates. POLYM. COMPOS., 40:3189–3198, 2019. © 2018 Society of Plastics Engineers.
Folate intake and incidence of hypertension among American young adults: a 20-y follow-up study
Creators: name: Liu, Kiang
name: Bujnowski, Deborah
name: Schreiner, Pamela J.
name: Sidney, Stephen
name: He, Ka
name: Xun, Pengcheng
name: Shikany, James M.
name: Loria, Catherine M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Background: Laboratory studies suggest that folate intake may decrease blood pressure (BP) through increasing nitric oxide synthesis in endothelial cells and/or reducing plasma homocysteine concentrations. However, human studies, particularly longitudinal data, are limited.
title: Local DRL of paediatric CT examinations in according to PiDRL Guidelines: experience of a dedicated Italian referral center
Creators: name: Magistrelli, Andrea
Publisher: name: ESR EuroSafe Imaging
Year: 2017
Subjects: subject: Dosimetric comparison
subject: Radiation safety
subject: Dosimetry
subject: CT-Angiography
subject: CT
subject: Thorax
subject: Head and neck
subject: Abdomen
subject: Action 2 - Clinical diagnostic reference levels (DRLs)
subject: Action 3 - Optimisation, diagnostic reference levels, image quality
subject: Quality assurance

description: Background/Introduction Description of activity and work performed Conclusion and Recommendations Personal/Organisational information References
description: Background/Introduction: Diagnostic Reference Levels (DRL) of procedures involving ionizing radiation are important tools to optimizing radiation doses delivered to patients and in identifying cases where the levels of doses are unusually high. This is particularly...
Asteroseismology of Ruprecht 147
Creators: name: Lund, Mikkel N.
name: Curtis, Jason L.
name: Bieryla, Allyson
name: Casagrande, Luca
name: Latham, David
name: Brogaard, Karsten F.
name: Miglio, Andrea
name: Basu, Sarbani
name: Ong, J. M. Joel
name: Serenelli, Aldo
Publisher: name: Zenodo
Year: 2024

description: Ruprecht 147 (NGC 6774) is the nearest old open cluster, located at a distance of approximately 300 pc and with an age of around 2.5 Gyr. Initially discovered by Ruprecht in 1966, the cluster remained largely unnoticed for decades until it was “re-discovered” by Curtis et al. in 2013. Since then, it has been the focus of several studies, particularly on the calibration of gyrochronology. During Campaign 7 of the K2 mission, many known members of Ruprecht 147 were targeted for 1-min cadence observations. In the study presented here, we have extracted asteroseismic parameters for 33 members of Ruprecht 147. What sets Ruprecht 147 apart from other clusters studied using asteroseismology is that oscillations can be analyzed for stars ranging from the main sequence (MS) to the red-giant branch (RGB). Importantly, several asteroseismic stars reside near the cluster turn-off, where isochrones are most distinguishable.
Influence of talc with different particle sizes in melt-mixed LLDPE/MWCNT composites
Creators: name: Müller, Michael Thomas
name: Dreyße, Janine
name: Häußler, Liane
name: Krause, Beate
name: Pötschke, Petra
Publisher: name: Hoboken, NJ [u.a.] : Wiley
Year: 2013
Subjects: subject: carbon nanotubes
subject: dispersion
subject: electrical properties
subject: melt
subject: mixing
subject: nanocomposites
subject: polyethylene
subject: 530
subject: 660

description: Linear low-density polyethylene (LLDPE) was melt-mixed with multiwalled carbon nanotubes (MWCNTs) and varying amounts of three different kinds of talc (phyllo silicate), each with a different particle size distribution, to examine the effect of these filler combinations with regards to the electrical percolation behavior. The state of the filler dispersion was assessed using transmission light microscopy and electron microscopy. The use of talc as a second filler during the melt mixing of LLDPE/MWCNT composites resulted in an improvement in the dispersion of the MWCNTs and a decrease of the electrical percolation threshold. Talc with lower particle sizes showed a more pronounced effect than talc with larger particle sizes. However, the improvement in dispersion was not reflected in the mechanical properties. Modulus and stress values increase with both, MWCNT and talc addition, but not in a synergistic manner. The crystallization behavior of the composites was studied by differential scanning calorimetry to determine its potential influence on the electrical percolation threshold. It was found that the crystallinity of the matrix increased slightly with the addition of talc but no further increments were observed with the incorporation of the MWCNTs. © 2013 Wiley Periodicals, Inc.
title: Have protective shields the potential to decrease patient radiation doses from CT?
Creators: name: Damilakis, John
Publisher: name: ESR EuroSafe Imaging
Year: 2017
Subjects: subject: Physics
subject: CT
subject: Radioprotection / Radiation dose
subject: Action 2 - Clinical diagnostic reference levels (DRLs)
subject: Action 3 - Optimisation, diagnostic reference levels, image quality
subject: Quality assurance

description: Background/Introduction Description of activity and work performed Conclusion and Recommendations Personal/Organisational information References
description: Background/Introduction: Normal 0 false false false EL X-NONE X-NONE MicrosoftInternetExplorer4 CT is a valuable imaging method that can be used to examine organs and tissues, detect abnormalities, guide procedures and perform biopsies. However, the clinical usefulness of...
Measuring alcohol consumption for genomic meta-analyses of alcohol intake: opportunities and challenges
Creators: name: Schuckit, Marc
name: Bennett, Siiri
name: Cole, John W.
name: Sun, Qi
name: DeSensi, Rebecca S.
name: Van Dam, Rob M.
name: Pasquale, Louis R.
name: Cheng, Yu Ching
name: Hu, Frank
name: Heiss, Gerardo
name: Taylor, Kira
name: Shaffer, John R.
name: Bierut, Laura J.
name: O'Connell, Jeffrey
name: Rice, John P.
name: Kang, Jae H.
name: Yaspan, Brian
name: Caporaso, Neil
name: Kittner, Steven
name: Mitchell, Braxton D.
name: Boerwinkle, Eric
name: Bookman, Ebony
name: Kramer, John
name: Lin, Peng
name: Cornelis, Marilyn C.
name: Crout, Richard
name: Marazita, Mary
name: Bucholz, Kathleen K.
name: Fitzpatrick, Annette
name: Qi, Lu
name: Edenberg, Howard J.
name: Goate, Alison
name: Freedman, Neal D.
name: Dick, Danielle M.
name: Hesselbrock, Victor
name: Agrawal, Arpana
name: Levy, Steven
name: Nurnberger Jr., John I.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Whereas moderate drinking may have health benefits, excessive alcohol consumption causes many important acute and chronic diseases and is the third leading contributor to preventable death in the United States. Twin studies suggest that alcohol-consumption patterns are heritable (50%); however, multiple genetic variants of modest effect size are likely to contribute to this heritable variation. Genome-wide association studies provide a tool for discovering genetic loci that contribute to variations in alcohol consumption. Opportunities exist to identify susceptibility loci with modest effect by meta-analyzing together multiple studies. However, existing studies assessed many different aspects of alcohol use, such as typical compared with heavy drinking, and these different assessments can be difficult to reconcile. In addition, many studies lack the ability to distinguish between lifetime and recent abstention or to assess the pattern of drinking during the week, and a variety of such concerns surround the appropriateness of developing a common summary measure of alcohol intake. Combining such measures of alcohol intake can cause heterogeneity and exposure misclassification, cause a reduction in power, and affect the magnitude of genetic association signals. In this review, we discuss the challenges associated with harmonizing alcohol-consumption data from studies with widely different assessment instruments, with a particular focus on large-scale genetic studies.
Phosphatidylcholine supplementation in pregnant women consuming moderate-choline diets does not enhance infant cognitive function: a randomized, double-blind, placebo-controlled trial
Creators: name: Fischer, Leslie M.
name: Cheatham, Carol L.
name: Goldman, Barbara Davis
name: Da Costa, Kerry Ann
name: Reznick, J. Steven
name: Zeisel, Steven H.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Background: Choline is essential for fetal brain development, and it is not known whether a typical American diet contains enough choline to ensure optimal brain development.
Aspect ratio effects of multi-walled carbon nanotubes on electrical, mechanical, and thermal properties of polycarbonate/MWCNT composites
Creators: name: Guo, Jiaxi
name: Liu, Yanjun
name: Prada-Silvy, Ricardo
name: Tan, Yongqiang
name: Azad, Samina
name: Krause, Beate
name: Pötschke, Petra
name: Grady, Brian P.
Publisher: name: Hoboken, NJ [u.a.] : Wiley
Year: 2014
Subjects: subject: aspect ratio
subject: carbon nanotubes
subject: electrical conductivity
subject: nanocomposites
subject: percolation threshold
subject: polycarbonates
subject: processing
subject: 530
subject: 660

description: Two multi-walled carbon nanotubes (MWCNTs) having relatively high aspect ratios of 313 and 474 with approximately the same diameter were melt mixed with polycarbonate (PC) in a twin-screw conical micro compounder. The effects of aspect ratio on the electrical, mechanical, and thermal properties of the PC/MWCNT composites were investigated. Electrical conductivities and storage moduli of the filled samples are found to be independent of the starting aspect ratio for these high aspect ratio tubes; although the conductivities and storage moduli are still significantly higher than values of composites made with nanotubes having more commercially common aspect ratios of ∼100. Transmission electron microscopy results suggest that melt-mixing reduces these longer nanotubes to the same length, but still approximately two times longer than the length of commercially common aspect ratio tubes after melt-mixing. Molecular weight measurements show that during melt-mixing the longer nanotubes significantly degrade the molecular weight of the polymer as compared to very similar nanotubes with aspect ratio ∼100. Because of the molecular weight reduction glass transition temperatures predictably show a large decrease with increasing nanotube concentration. © 2013 Wiley Periodicals, Inc.
title: Ultra Low-Dose CT Imaging of inflammatory sinonasal diseases
Creators: name: Traykova, Nikoleta
Publisher: name: ESR EuroSafe Imaging
Year: 2017
Subjects: subject: Dosimetry
subject: CT-High Resolution
subject: CT
subject: Head and neck
subject: Ear / Nose / Throat
subject: Action 5 - Performance indicators for radiation protection management
subject: Action 8 - Radiation protection training and learning material
subject: Action 2 - Clinical diagnostic reference levels (DRLs)
subject: Action 9 - Development of criteria for safe imaging procedures
subject: Action 6 - Education and training in medical radiation protection
subject: Action 3 - Optimisation, diagnostic reference levels, image quality
subject: Safety
subject: Inflammation
subject: Kv imaging

description: Background/Introduction Description of activity and work performed Conclusion and Recommendations Personal/Organisational information References
description: Background/Introduction: Rhinosinusitis is the most commonly diagnosedillnesses of the paranasal sinuses. It is defined as an inflammation of the nasal cavity and the mucous membranes of the sinuses, sometimes with involving the underlying bone. On the basis of the duration...
Chi-square approximation by Stein's method with application to Pearson's statistic
Creators: name: Gaunt, Robert E.
name: Pickett, Alastair
name: Reinert, Gesine
Publisher: name: arXiv
Year: 2015
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60F05, 62G10, 62G20

description: This paper concerns the development of Stein's method for chi-square approximation and its application to problems in statistics. New bounds for the derivatives of the solution of the gamma Stein equation are obtained. These bounds involve both the shape parameter and the order of the derivative. Subsequently Stein's method for chi-square approximation is applied to bound the distributional distance between Pearson's statistic and its limiting chi-square distribution, measured using smooth test functions. In combination with the use of symmetry arguments, Stein' method yields explicit bounds on this distributional distance of order $n^{-1}$.
description: 39 pages. Final version. To appear in Annals of Applied Probability
Tick size regulation and the liquidity of UK venues: Three market microstructure essays
Creators: name: Nuzzo, Maria Francesca
Publisher: name: Universit� degli studi di Trento
Year: 2020

description: This dissertation contributes to the research in the applied market micro-structure ?eld, aiming to investigate the impact of a speci?c article of the MiFID II enforced on the 3rd of January 2018: the so-called tick size regime. It is constituted by three papers that see in the market regulators and policy-makers their optimal target. The ?rst paper evaluates the consequences of the new regulation on UK minor venues in terms of liquidity and price discovery and highlights minor unintended consequences in the implementation of the new grid. The second paper builds on these conclusions and promotes an alternative to ESMA grid, a recalibration of the tick size that might lead to a greater orderliness of UK order books. Thethirdpaperendogenouslyinvestigatesthebehaviourofthemarketparticipants in the time frame around the MiFID II enforcement, simulating liquidity breakdowns thus providing the regulators with new simple metrics to detect and monitor abnormal market participants interactions.
Randomized controlled trial of meat compared with multimicronutrient-fortified cereal in infants and toddlers with high stunting rates in diverse settings
Creators: name: Garces, Ana
name: Koso-Thomas, Marion
name: Lokangaka, Adrien
name: Imenda, Edna
name: Manasyan, Albert
name: Goldenberg, Robert L.
name: Sami, Neelofar
name: Bose, Carl L.
name: Goco, Norman
name: Kindem, Mark
name: Wright, Linda L.
name: Mazariegos, Manolo
name: Westcott, Jamie
name: Hartwell, Tyler D.
name: Chomba, Elwyn
name: Pasha, Omrana
name: McClure, Elizabeth M.
name: Hambidge, K. Michael
name: Tshefu, Antoinette
name: Carlo, Waldemar A.
name: Krebs, Nancy F.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Background: Improved complementary feeding is cited as a critical factor for reducing stunting. Consumption of meats has been advocated, but its efficacy in low-resource settings has not been tested.
An Efficient Inexact Symmetric Gauss-Seidel Based Majorized ADMM for High-Dimensional Convex Composite Conic Programming
Creators: name: Chen, Liang
name: Sun, Defeng
name: Toh, Kim-Chuan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 90C25, 90C22, 90C06, 65K05

description: In this paper, we propose an inexact multi-block ADMM-type first-order method for solving a class of high-dimensional convex composite conic optimization problems to moderate accuracy. The design of this method combines an inexact 2-block majorized semi-proximal ADMM and the recent advances in the inexact symmetric Gauss-Seidel (sGS) technique for solving a multi-block convex composite quadratic programming whose objective contains a nonsmooth term involving only the first block-variable. One distinctive feature of our proposed method (the sGS-imsPADMM) is that it only needs one cycle of an inexact sGS method, instead of an unknown number of cycles, to solve each of the subproblems involved.With some simple and implementable error tolerance criteria, the cost for solving the subproblems can be greatly reduced, and many steps in the forward sweep of each sGS cycle can often be skipped, which further contributes to the efficiency of the proposed method. Global convergence as well as the iteration complexity in the non-ergodic sense is established.Preliminary numerical experiments on some high-dimensional linear and convex quadratic SDP problems with a large number of linear equality and inequality constraints are also provided. The results show that for the vast majority of the tested problems, the sGS-imsPADMM is 2 to 3 times faster than the directly extended multi-block ADMM with the aggressive step-length of 1.618, which is currently the benchmark among first-order methods for solving multi-block linear and quadratic SDP problems though its convergence is not guaranteed.
description: 25 pages, 8 figures, 1 table
Electrical and melt rheological characterization of PC and co-continuous PC/SAN blends filled with CNTs: Relationship between melt-mixing parameters, filler dispersion, and filler aspect ratio
Creators: name: Liebscher, Marco
name: Domurath, Jan
name: Krause, Beate
name: Saphiannikova, Marina
name: Heinrich, Gert
name: Pötschke, Petra
Publisher: name: Hoboken, NJ [u.a.] : Wiley
Year: 2018
Subjects: subject: carbon nanotubes
subject: electrical properties
subject: morphology
subject: nanocomposites
subject: rheology
subject: 530
subject: 660

description: Electrical and melt rheological properties of melt-mixed polycarbonate (PC) and co-continuous PC/poly(styrene–acrylonitrile) (SAN) blends with carbon nanotubes (CNTs) are investigated. Using two sets of mixing parameters, different states of filler dispersion are obtained. With increasing CNT dispersion, an increase in electrical resistivity near the percolation threshold of PC–CNT composites and (PC + CNT)/SAN blends is observed. This suggests that the higher mixing energies required for better dispersion also result in a more severe reduction of the CNT aspect ratio; this effect was proven by CNT length measurements. Melt rheological studies show higher reinforcing effects for composites with worse dispersion. The Eilers equation, describing the melt viscosity as function of filler content, was used to fit the data and to obtain information about an apparent aspect ratio change, which was in accordance with measured CNT length reduction. Such fitting could be also transferred to the blends and serves for a qualitatively based discussion. © 2017 Wiley Periodicals
DNA methylation potential: dietary intake and blood concentrations of one-carbon metabolites and cofactors in rural African women
Creators: name: Prentice, Andrew M.
name: Innis, Sheila M.
name: Cole, Darren
name: Waterland, Robert A.
name: Hennig, Branwen J.
name: Fulford, Anthony J.C.
name: Moore, Sophie E.
name: Dominguez-Salas, Paula
name: Cox, Sharon E.
name: Zeisel, Steven H.
name: Da Costa, Kerry Ann
name: Dyer, Roger A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: BACKGROUND: Animal models show that periconceptional supplementation with folic acid, vitamin B-12, choline, and betaine can induce differences in offspring phenotype mediated by epigenetic changes in DNA. In humans, altered DNA methylation patterns have been observed in offspring whose mothers were exposed to famine or who conceived in the Gambian rainy season.

OBJECTIVE: The objective was to understand the seasonality of DNA methylation patterns in rural Gambian women. We studied natural variations in dietary intake of nutrients involved in methyl-donor pathways and their effect on the respective metabolic biomarkers.

DESIGN: In 30 women of reproductive age (18-45 y), we monitored diets monthly for 1 y by using 48-h weighed records to measure intakes of choline, betaine, folate, methionine, riboflavin, and vitamins B-6 and B-12. Blood biomarkers of these nutrients, S-adenosylhomocysteine (SAH), S-adenosylmethionine (SAM), homocysteine, cysteine, and dimethylglycine were also assessed monthly.

RESULTS: Dietary intakes of riboflavin, folate, choline, and betaine varied significantly by season; the most dramatic variation was seen for betaine. All metabolic biomarkers showed significant seasonality, and vitamin B-6 and folate had the highest fluctuations. Correlations between dietary intakes and blood biomarkers were found for riboflavin, vitamin B-6, active vitamin B-12 (holotranscobalamin), and betaine. We observed a seasonal switch between the betaine and folate pathways and a probable limiting role of riboflavin in these processes and a higher SAM/SAH ratio during the rainy season.

CONCLUSIONS: Naturally occurring seasonal variations in food-consumption patterns have a profound effect on methyl-donor biomarker status. The direction of these changes was consistent with previously reported differences in methylation of metastable epialleles. This trial was registered at www.clinicaltrials.gov as NCT01811641.
Does diet-beverage intake affect dietary consumption patterns? Results from the Choose Healthy Options Consciously Everyday (CHOICE) randomized clinical trial1-3
Creators: name: Wang, Xiaoshan
name: Popkin, Barry M.
name: Tate, Deborah F.
name: Piernas, Carmen
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Background: Little is understood about the effect of increased consumption of low-calorie sweeteners in diet beverages on dietary patterns and energy intake.
(100867) James Jackson Carnick
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Recueil des édits, ordonnances, déclarations, traitez et concordats du règne de Léopold I. De glorieuse mémoire, Duc de Lorraine et de Bar. Tome IV
Creators: name: Léopold I (Duc De Lorraine ; 1679-1729)
name: Lorraine (Duché)
Publisher: name: A Nancy, chez la Veuve de Jean-Baptiste Cusson, Imprimeur-Libraire Ordinaire de S. A. R. sur la Place, au Nom de Jesus. Avec privilège.
Year: 1734

description: Alphabet du titre : latin
description: Années 1698-1729
description: Bandeau gravé sur bois aux armes ducales ; Armes ducales gravées sur bois au titre
Un' artistica rappresentazione di Esmoreit, figlio del re di Sicilia
Creators: name: Ferrari, Fulvio
Publisher: name: Universit� degli Studi di Trento
Year: 2001

description: Un saggio mago d?oriente legge nelle stelle che un principe siciliano, nato quella stessa notte, costituisce un pericolo mortale per il suo signore. Nello stesso momento, in Sicilia, il cugino del principe neonato, furente nel vedersi sfuggire la successione al trono del re ormai vecchio, trama la sua morte. Ha cos� inizio l?artistica rappresentazione di Esmoreit, uno dei pi� antichi testi teatrali d?Europa a carattere profano, che non si propone d?indurre gli spettatori al riso, ma li guida nel mondo rarefatto della fiaba e del romanzo cavalleresco. Un interessante frutto della civilt� nederlandese del XIV secolo, e una sorprendente testimonianza della variet� del testro medievale europeo.