cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Inflammatory breast carcinoma and its differential diagnosis: a pictorial review
Creators: name: Missumi, Larissa
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Cancer
subject: Biopsy
subject: Ultrasound
subject: MR
subject: Mammography
subject: Breast

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: The objective of the study is to describe the epidemiological, clinical aspects and imaging findings of inflammatory breast carcinoma (IBC), emphasizing the differences between IBC and its differential diagnosis, such as locally advanced breast...
Effects of Boundary Conditions on Single-File Pedestrian Flow
Creators: name: Zhang, Jun
name: Tordeux, Antoine
name: Seyfried, Armin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: In this paper we investigate effects of boundary conditions on one dimensional pedestrian flow which involves purely longitudinal interactions. Qualitatively, stop-and-go waves are observed under closed boundary condition and dissolve when the boundary is open. To get more detailed information the fundamental diagrams of the open and closed systems are compared using Voronoi-based measurement method. Higher maximal specific flow is observed from the pedestrian movement at open boundary condition.
Synergistic Effect of Elevated Device Temperature and Excess Charge Carriers on the Rapid Light-Induced Degradation of Perovskite Solar Cells
Creators: name: Liu, Y.
name: Song, J.
name: Huang, J.
name: Chen, B.
name: Dai, X.
name: Rudd, P.N.
name: Hong, X.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: With power conversion efficiencies now reaching 24.2%, the major factor limiting efficient electricity generation using perovskite solar cells (PSCs) is their long‐term stability. In particular, PSCs have demonstrated rapid degradation under illumination, the driving mechanism of which is yet to be understood. It is shown that elevated device temperature coupled with excess charge carriers due to constant illumination is the dominant force in the rapid degradation of encapsulated perovskite solar cells under illumination. Cooling the device to 20 °C and operating at the maximum power point improves the stability of CH3NH3PbI3 solar cells over 100× compared to operation under open circuit conditions at 60 °C. Light‐induced strain originating from photothermal‐induced expansion is also observed in CH3NH3PbI3, which excludes other light‐induced‐strain mechanisms. However, strain and electric field do not appear to play any role in the initial rapid degradation of CH3NH3PbI3 solar cells under illumination. It is revealed that the formation of additional recombination centers in PSCs facilitated by elevated temperature and excess charge carriers ultimately results in rapid light‐induced degradation. Guidance on the best methods for measuring the stability of PSCs is also given.
Depression, Anxiety and Stress and Job-Related Factors Among Healthcare Workers in a Tertiary Government Hospital in the Philippines During the COVID-19 Pandemic
Creators: name: Cabungcal, Ana Melissa Hilvano
Publisher: name: Zenodo
Year: 2023
Subjects: Depression, Anxiety, Stress, COVID-19

description: Background and Objectives: Ensuring the total well-being of healthcare workers (HCW), including their mental health and psychological well-being, is an essential aspect in the delivery of safe care to patients and the preservation of the health workforce. The WHO has identified depressive and anxiety disorders and stress as the three most common mental health problems in the workplace. It also stated substantial increase in the global burden of disease for 2020 as a result of the pandemic (WHO 2022). Factors in the workplace played a significant role in increasing mental health strain of HCWs during the COVID 19 pandemic. This study aimed to determine the level of mental well-being and emotional state of HCWs in terms of depression, anxiety, and stress in a tertiary hospital during the COVID-19 pandemic in the Philippines and to identify the factors that may be associated with depression, anxiety and stress. Methodology: This is a cross-sectional study among healthcare workers (HCW) involved in direct patient care in a single tertiary government hospital in the Philippines during the COVID-19 pandemic. It made use of an on-line self-administered questionnaire that was sent thru pertinent social media groups (i.e. Viber, WhatsApp, Telegram, Facebook Messenger) of doctors, nurses and allied medical professionals actively working in the clinical areas. Stratified sampling method was used and was based on the estimated percentage by category of healthcare workers working in the clinical areas of the hospital. Data collection was conducted from February to March 2022. Results: Three hundred sixty-four healthcare workers agreed to participate and submitted their responses to the questionnaire and met the inclusion criteria. The mean age was 35, with 251 females and 113 males. Majority of the respondents are single (62.62%), living with immediate family (50.82%) and work in a COVID designated area (62.09%). This study showed high prevalence of depression (49.18%), anxiety (61.54%) and stress (30.22%) among the HCWs. It also showed that work in high infection/COVID designated areas is significantly associated with anxiety and stress and that high-job demand is significantly associated with all three mental health states of depression, anxiety and stress. Factors such as job-control and job-support are not significantly associated with depression, anxiety, and stress. Conclusion: Focus should be placed on modifying the condition of high job-demand among healthcare workers working in hospitals, particularly those involved in direct patient care and working in high infection areas, to be able to attenuate its effects on the states of depression, anxiety and stress.
description: Master's Thesis
Bilateral alkylamine for suppressing charge recombination and improving stability in blade-coated perovskite solar cells
Creators: name: Huang, J.
name: Xiao, X.
name: Zhao, J.
name: Shao, Y.
name: Wang, Q.
name: Rudd, P.N.
name: Wei, H.
name: Fang, Y.
name: Feng, Y.
name: Wu, W.-Q.
name: Deng, Y.
name: Yang, Z.
name: Liu, Y.
name: Dai, X.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: The power conversion efficiencies (PCEs) of perovskite solar cells (PSCs) are already higher than that of other thin film technologies, but laboratory cell-fabrication methods are not scalable. Here, we report an additive strategy to enhance the efficiency and stability of PSCs made by scalable blading. Blade-coated PSCs incorporating bilateral alkylamine (BAA) additives achieve PCEs of 21.5 (aperture, 0.08 cm2) and 20.0% (aperture, 1.1 cm2), with a record-small open-circuit voltage deficit of 0.35 V under AM1.5G illumination. The stabilized PCE reaches 22.6% under 0.3 sun. Anchoring monolayer bilateral amino groups passivates the defects at the perovskite surface and enhances perovskite stability by exposing the linking hydrophobic alkyl chain. Grain boundaries are reinforced by BAA and are more resistant to mechanical bending and electron beam damage. BAA improves the device shelf lifetime to >1000 hours and operation stability to >500 hours under light, with 90% of the initial efficiency retained.
title: Diagnosis of an eye socket pseodutumor through mr 3.0T, without intravenous contrast
Creators: name: VILLANUEVA ANGUITA, MIRIAM
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Pathology
subject: Imaging sequences
subject: MR
subject: Neuroradiology brain
subject: Eyes

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Show the MRI anatomy of the eye and orbit. To provide a MR protocol to evaluate orbital pseudotumor without the need of using intravenous contrast...
Activity from the Be/X-ray binary system V0332+53 during its intermediate-luminosity outburst in 2008
Creators: name: Caballero-Garcia, M. D.
name: Camero-Arranz, A.
name: Arabaci, M. Ozbey
name: Zurita, C.
name: Suso, J.
name: Gutierrez-Soto, J.
name: Beklen, E.
name: Kiaeerad, F.
name: Garrido, R.
name: Hudec, R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Aims: We present a study of the Be/X-ray binary system V 0332+53 with the main goal of characterizing its behavior mainly during the intermediate-luminosity X-ray event on 2008. In addition, we aim to contribute to the understanding of the global behavior of the donor companion by including optical data from our dedicated campaign starting on 2006. Methods: V 0332+53 was observed by RXTE and Swift during the decay of the intermediate-luminosity X-ray outburst of 2008, as well as with Suzaku before the rising of the third normal outburst of the 2010 series. In addition, we present recent data from the Spanish ground-based astronomical observatories of El Teide (Tenerife), Roque de los Muchachos (La Palma), and Sierra Nevada (Granada), and since 2006 from the Turkish TUBITAK National Observatory (Antalya). We have performed temporal analyses to investigate the transient behaviour of this system during several outbursts. Results: Our optical study revealed that continuous mass ejection episodes from the Be star have been taking place since 2006 and another one is currently ongoing. The broad-band 1-60 keV X-ray spectrum of the neutron star during the decay of the 2008 outburst was well fitted with standard phenomenological models, enhanced by an absorption feature of unknown origin at about 10 keV and a narrow iron K-alpha fluorescence line at 6.4 keV. For the first time in V 0332+53 we tentatively see an increase of the cyclotron line energy with increasing flux (although further and more sensitive observations are needed to confirm this). Regarding the fast aperiodic variability, we detect a Quasi-Periodic Oscillation (QPO) at 227+-9 mHz only during the lowest luminosities. The latter fact might indicate that the inner regions surrounding the magnetosphere are more visible during the lowest flux states.
description: Accepted for publication in A&A (13/01/16)
Depression, Anxiety and Stress and Job-Related Factors Among Healthcare Workers in a Tertiary Government Hospital in the Philippines During the COVID-19 Pandemic
Creators: name: Cabungcal, Ana Melissa Hilvano
Publisher: name: Zenodo
Year: 2023
Subjects: Depression, Anxiety, Stress, COVID-19

description: Background and Objectives: Ensuring the total well-being of healthcare workers (HCW), including their mental health and psychological well-being, is an essential aspect in the delivery of safe care to patients and the preservation of the health workforce. The WHO has identified depressive and anxiety disorders and stress as the three most common mental health problems in the workplace. It also stated substantial increase in the global burden of disease for 2020 as a result of the pandemic (WHO 2022). Factors in the workplace played a significant role in increasing mental health strain of HCWs during the COVID 19 pandemic. This study aimed to determine the level of mental well-being and emotional state of HCWs in terms of depression, anxiety, and stress in a tertiary hospital during the COVID-19 pandemic in the Philippines and to identify the factors that may be associated with depression, anxiety and stress.

Methodology: This is a cross-sectional study among healthcare workers (HCW) involved in direct patient care in a single tertiary government hospital in the Philippines during the COVID-19 pandemic.  It made use of an on-line self-administered questionnaire that was sent thru pertinent social media groups (i.e. Viber, WhatsApp, Telegram, Facebook Messenger) of doctors, nurses and allied medical professionals actively working in the clinical areas. Stratified sampling method was used and was based on the estimated percentage by category of healthcare workers working in the clinical areas of the hospital. Data collection was conducted from February to March 2022.

 

Results: Three hundred sixty-four healthcare workers agreed to participate and submitted their responses to the questionnaire and met the inclusion criteria. The mean age was 35, with 251 females and 113 males. Majority of the respondents are single (62.62%), living with immediate family (50.82%) and work in a COVID designated area (62.09%). This study showed high prevalence of depression (49.18%), anxiety (61.54%) and stress (30.22%) among the HCWs. It also showed that work in high infection/COVID designated areas is significantly associated with anxiety and stress and that high-job demand is significantly associated with all three mental health states of depression, anxiety and stress. Factors such as job-control and job-support are not significantly associated with depression, anxiety, and stress.

Conclusion: Focus should be placed on modifying the condition of high job-demand among healthcare workers working in hospitals, particularly those involved in direct patient care and working in high infection areas, to be able to attenuate its effects on the states of depression, anxiety and stress.
description: Master's Thesis
Tailoring Passivation Molecular Structures for Extremely Small Open-Circuit Voltage Loss in Perovskite Solar Cells
Creators: name: Huang, J.
name: Yu, Z.
name: Dai, J.
name: Zhou, Y.
name: Shao, Y.
name: Zeng, X.C.
name: Yang, S.
name: Xiao, X.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: Passivation of electronic defects at the surface and grain boundaries of perovskite materials has become one of the most important strategies to suppress charge recombination in both polycrystalline and single-crystalline perovskite solar cells. Although many passivation molecules have been reported, it remains very unclear regarding the passivation mechanisms of various functional groups. Here, we systematically engineer the structures of passivation molecular functional groups, including carboxyl, amine, isopropyl, phenethyl, and tert-butylphenethyl groups, and study their passivation capability to perovskites. It reveals the carboxyl and amine groups would heal charged defects via electrostatic interactions, and the neutral iodine related defects can be reduced by the aromatic structures. The judicious control of the interaction between perovskite and molecules can further realize grain boundary passivation, including those that are deep toward substrates. Understanding of the underlining mechanisms allows us to design a new passivation molecule, D-4-tert-butylphenylalanine, yielding high-performance p-i-structure solar cells with a stabilized efficiency of 21.4%. The open-circuit voltage (VOC) of a device with an optical bandgap of 1.57 eV for the perovskite layer reaches 1.23 V, corresponding to a record small VOC deficit of 0.34 V. Our findings provide a guidance for future design of new passivation molecules to realize multiple facets applications in perovskite electronics.
title: Imaging aspects of a rare invasive breast carcinoma: the medullary subtype
Creators: name: Souza, Pedro
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Neoplasia
subject: Cancer
subject: Biopsy
subject: Ultrasound
subject: MR
subject: Mammography
subject: Oncology
subject: Lymph nodes
subject: Breast

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: The objectives of this educational exhibit are: to describe the most common imaging findings of breast carcinoma with medullary features; to describe the diagnostic histological criteria of medullary carcinomas; to correlate the imaging features...
Fast Growth of Thin MAPbI3 Crystal Wafers on Aqueous Solution Surface for Efficient Lateral-Structure Perovskite Solar Cells
Creators: name: Huang, J.
name: Liu, Y.
name: Lin, Y.
name: Fang, Y.
name: Dong, Q.
name: Deng, Y.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: Solar‐grade single or multiple crystalline wafers are needed in large quantities in the solar cell industry, and are generally formed by a top‐down process from crystal ingots, which causes a significant waste of materials and energy during slicing, polishing, and other processing. Here, a bottom‐up technique that allows the growth of wafer‐size hybrid perovskite multiple crystals directly from aqueous solution is reported. Single‐crystalline hybrid perovskite wafers with centimeter size are grown at the top surface of a perovskite precursor solution. As well as saving raw materials, this method provides unprecedented advantages such as easily tunable thickness and rapid growth of the crystals. These crystalline wafers show high crystallinity, broader light absorption, and a long carrier recombination lifetime, comparable with those of bulk single crystals. Lateral‐structure perovskite solar cells made of these crystals demonstrate a record power conversion efficiency of 5.9%.
Semipredictable dynamical systems
Creators: name: García-Morales, Vladimir
Publisher: name: arXiv
Year: 2015
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Mathematical Physics (math-ph)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: FOS: Physical sciences

description: A new class of deterministic dynamical systems, termed semipredictable dynamical systems, is presented. The spatiotemporal evolution of these systems have both predictable and unpredictable traits, as found in natural complex systems. We prove a general result: The dynamics of any deterministic nonlinear cellular automaton (CA) with $p$ possible dynamical states can be decomposed at each instant of time in a superposition of $N$ layers involving $p_{0}$, $p_{1}$,... $p_{N-1}$ dynamical states each, where the $p_{k\in \mathbb{N}}$, $k \in [0, N-1]$ are divisors of $p$. If the divisors coincide with the prime factors of $p$ this decomposition is unique. Conversely, we also prove that $N$ CA working on symbols $p_{0}$, $p_{1}$,... $p_{N-1}$ can be composed to create a graded CA rule with $N$ different layers. We then show that, even when the full spatiotemporal evolution can be unpredictable, certain traits (layers) can exactly be predicted. We present explicit examples of such systems involving compositions of Wolfram's 256 elementary CA and a more complex CA rule acting on a neighborhood of two sites and 12 symbols and whose rule table corresponds to the smallest Moufang loop $M_{12}(S_{3},2)$.
description: 25 pages, 5 figures. Accepted to Commun. Nonlinear Sci. Numer. Simulat. Minor corrections introduced to match the final, accepted version
Unveiling the operation mechanism of layered perovskite solar cells
Creators: name: Nahid, M.M.
name: Stuard, S.J.
name: Huang, J.
name: Moran, A.M.
name: Wang, Q.
name: Zhao, J.
name: Lin, Y.
name: Shao, Y.
name: Fang, Y.
name: Ade, H.
name: Shield, J.E.
name: Zhou, N.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: Layered perovskites have been shown to improve the stability of perovskite solar cells while its operation mechanism remains unclear. Here we investigate the process for the conversion of light to electrical current in high performance layered perovskite solar cells by examining its real morphology. The layered perovskite films in this study are found to be a mixture of layered and three dimensional (3D)-like phases with phase separations at micrometer and nanometer scale in both vertical and lateral directions. This phase separation is explained by the surface initiated crystallization process and the competition of the crystallization between 3D-like and layered perovskites. We further propose that the working mechanisms of the layered perovskite solar cells involve energy transfer from layered to 3D-like perovskite network. The impact of morphology on efficiency and stability of the hot-cast layered perovskite solar cells are also discussed to provide guidelines for the future improvement.
A bounded transform approach to self-adjoint operators: Functional calculus and affiliated von Neumann algebras
Creators: name: Budde, Christian
name: Landsman, Klaas
Publisher: name: arXiv
Year: 2015
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47C15

description: Spectral theory and functional calculus for unbounded self-adjoint operators on a Hilbert space are usually treated through von Neumann's Cayley transform. Based on ideas of Woronowicz, we redevelop this theory from the point of view of multiplier algebras and the so-called bounded transform (which establishes a bijective correspondence between closed operators and pure contractions). This also leads to a simple account of the affiliation relation between von Neumann algebras and self-adjoint operators.
description: 10 pages
title: Very low left atrial volume on CT pulmonary angiography is associated with higher mortality
Creators: name: Aviram, Galit
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Outcomes
subject: Computer Applications-General
subject: CT-Angiography
subject: Thorax
subject: Cardiovascular system

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: The left atrium (LA)functions as a conduit for pulmonary venous return during early ventricular diastole, andpartakes an important role in left ventricular filling [1]. The LAsize is known to be a marker of cardiovascular risk:large LA size have...
Additional file 1 of Efficient gene delivery into the embryonic chicken brain using neuron-specific promoters and in ovo electroporation
Creators: name: Jung, Kyung Min
name: Park, Kyung Je
name: Kim, Young Min
name: Han, Jae Yong
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Table S1. List of primers used for research.
(101965) Cecilia Hall Byng
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.
Anomalous Spin Response and Virtual-Carrier-Mediated Magnetism in a Topological Insulator
Creators: name: Kernreiter, T.
name: Governale, M.
name: Zülicke, U.
name: Hankiewicz, E. M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a comprehensive theoretical study of the static spin response in HgTe quantum wells, revealing distinctive behavior for the topologically nontrivial inverted structure. Most strikingly, the q=0 (long-wave-length) spin susceptibility of the undoped topological-insulator system is constant and equal to the value found for the gapless Dirac-like structure, whereas the same quantity shows the typical decrease with increasing band gap in the normal-insulator regime. We discuss ramifications for the ordering of localized magnetic moments present in the quantum well, both in the insulating and electron-doped situations. The spin response of edge states is also considered, and we extract effective Lande g-factors for the bulk and edge electrons. The variety of counter-intuitive spin-response properties revealed in our study arises from the system's versatility in accessing situations where the charge-carrier dynamics can be governed by ordinary Schrodinger-type physics, mimics the behavior of chiral Dirac fermions, or reflects the material's symmetry-protected topological order.
description: 15 pages, 8 figures, RevTex4.1; v2: extended and expanded results and presentation
Halide lead perovskites for ionizing radiation detection
Creators: name: Wei, H.
name:  Huang, J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: Halide lead perovskites have attracted increasing attention in recent years for ionizing radiation detection due to their strong stopping power, defect-tolerance, large mobility-lifetime (μτ) product, tunable bandgap and simple single crystal growth from low-cost solution processes. In this review, we start with the requirement of material properties for high performance ionizing radiation detection based on direct detection mechanisms for applications in X-ray imaging and γ-ray energy spectroscopy. By comparing the performances of halide perovskites radiation detectors with current state-of-the-art ionizing radiation detectors, we show the promising features and challenges of halide perovskites as promising radiation detectors.
Boundary Operators of BCFW Recursion Relation
Creators: name: Jin, Qingjun
name: Feng, Bo
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that boundary contributions of BCFW recursions can be interpreted as the form factors of some composite operators which we call 'boundary operators'. The boundary operators can be extracted from the operator product expansion of deformed fields. We also present an algorithm to compute the boundary operators using path integral.
description: 20 pages, 2 figures
Ranking by pairwise comparisons for Swiss-system tournaments
Creators: name: Csató, László
Publisher: name: arXiv
Year: 2015
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: 15A06, 91B14

description: Pairwise comparison matrices are widely used in Multicriteria Decision Making. This article applies incomplete pairwise comparison matrices in the area of sport tournaments, namely proposing alternative rankings for the 2010 Chess Olympiad Open tournament. It is shown that results are robust regarding scaling technique. In order to compare different rankings, a distance function is introduced with the aim of taking into account the subjective nature of human perception. Analysis of the weight vectors implies that methods based on pairwise comparisons have common roots. Visualization of the results is provided by Multidimensional Scaling on the basis of the defined distance. The proposed rankings give in some cases intuitively better outcome than currently used lexicographical orders.
title: MDCT after Hybrid Repair of Thoracic Aorta: a Brainteaser.
Creators: name: Otero Muinelo, Susana Altea
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Arteries / Aorta
subject: CT
subject: CT-Angiography
subject: Angioplasty
subject: Stents
subject: Surgery
subject: Aneurysms
subject: Dissection

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To introduce hybrid procedures -combination of endovascular approach and surgery- performed for the treatment of aneurysms, dissections and ulcers at the thoracic aorta. To show normal post-procedure tomographic findings. Insist on challenging...
(101967) Philip Limborch Tillbrook
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.
Enhancing electron diffusion length in narrow-bandgap perovskites for efficient monolithic perovskite tandem solar cells
Creators: name: Ni, Z.
name: Huang, J.
name: Zhao, J.
name: Chen, B.
name: Rudd, P.N.
name: Wei, H.
name: Yang, Z.
name: Xiao, X.
name: Wang, K.
name: Berry, J.J.
name: Beard, M.C.
name: Yu, Z.
name: Deng, Y.
name: Habisreutinger, S.N.
name: Chen, X.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: Developing multijunction perovskite solar cells (PSCs) is an attractive route to boost PSC efficiencies to above the single-junction Shockley-Queisser limit. However, commonly used tin-based narrow-bandgap perovskites have shorter carrier diffusion lengths and lower absorption coefficient than lead-based perovskites, limiting the efficiency of perovskite-perovskite tandem solar cells. In this work, we discover that the charge collection efficiency in tin-based PSCs is limited by a short diffusion length of electrons. Adding 0.03 molar percent of cadmium ions into tin-perovskite precursors reduce the background free hole concentration and electron trap density, yielding a long electron diffusion length of 2.72 ± 0.15 µm. It increases the optimized thickness of narrow-bandgap perovskite films to 1000 nm, yielding exceptional stabilized efficiencies of 20.2 and 22.7% for single junction narrow-bandgap PSCs and monolithic perovskite-perovskite tandem cells, respectively. This work provides a promising method to enhance the optoelectronic properties of narrow-bandgap perovskites and unleash the potential of perovskite-perovskite tandem solar cells.
Accurate characterization of next-generation thin-film photodetectors
Creators: name: Meredith, P.
name: Huang, J.
name: Fang, Y.
name: Armin, A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: The performance of photodetectors fabricated from emerging semiconductors such as perovskites, quantum dots, two-dimensional materials or organics, for example, can be prone to misinterpretation. This Comment exposes the problems and proposes some guidelines for accurate characterization.
Physical Aspects of Unitary evolution of Bianchi-I Quantum Cosmological Model
Creators: name: Pal, Sridip
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work, we study some physical aspects of unitary evolution of Bianchi-I model. In particular, we study the behavior of the volume and the scale factor as a function of time for the Bianchi-I universe with ultra-relativistic fluid ($α=1$). The expectation value of volume is shown not to hit any singularity. We elucidate on the anisotropic nature of the solution and physically interpret the wavefunction as a superposition of collapsing universe and expanding universe mimicking Hartle-Hawking type wavefunction. The same analysis has been done for $α\neq 1$ as well. The work also comments on how to obtain Vilenkin type wavefunction representing an expanding universe without that being superposed with a solution representing a collapsing universe. We also point at a possible phase transition phenomenon for $α\neq1$ case with existence of a critical parameter.
description: 11 pages, 3 figures
title: Histopathology findings in ex-vivo specimens after transarterial chemoembolization with 70-150 µm and 100-30 µm drug eluting embolics in liver transplant patients
Creators: name: Heithaus, Robert Evans
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Oncology
subject: Fluoroscopy
subject: Chemoembolisation
subject: Pathology

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: A great deal of work has been done in recent years attempting to find the perfectly sized embolic agent for use in the treatment of drug eluting embolic transarterial chemoembolization (DEE-TACE, also known as DEBDOX or DEB-TACE) in the treatment of...
Additional file 2 of Efficient gene delivery into the embryonic chicken brain using neuron-specific promoters and in ovo electroporation
Creators: name: Jung, Kyung Min
name: Park, Kyung Je
name: Kim, Young Min
name: Han, Jae Yong
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Fig S1. RT-PCR analysis of cultured embryonic brain cells. Expression of PAX6 and SYP were analyzed in primary cultured brain cells. Whole brain was used as a positive control and DF1 fibroblast cells were used as a negative control. DW, distilled water. The parts shown in Fig. 1B are indicated by black dashed lines.
Organohalide Lead Perovskites: More Stable than Glass under Gamma-Ray Radiation
Creators: name: Kandlakunta, P.
name: Xu, Z.
name: Cao, L.
name: Yang, S.
name: Xue, S.
name: Huang, J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: Organohalide metal perovskites have emerged as promising semiconductor materials for use as space solar cells and radiation detectors. However, there is a lack of study of their stability under operational conditions. Here a stability study of perovskite solar cells under gamma‐rays and visible light simultaneously is reported. The perovskite active layers are shown to retain 96.8% of their initial power conversion efficiency under continuous irradiation of gamma‐rays and light for 1535 h, where gamma‐rays have an accumulated dose of 2.3 Mrad. In striking contrast, a glass substrate shows obvious loss of transmittance under the same irradiation conditions. The excellent stability of the perovskite solar cells benefits from the self‐healing behavior to recover its efficiency loss from the early degradation induced by gamma‐ray irradiation. Defect density characterization reveals that gamma‐ray irradiation does not induce electronic trap states. These observations demonstrate the prospects of perovskite materials in applications of radiation detectors and space solar cells.
title: Lumbosacral Transition Vertebra -The Holy Grail in Spine Imaging-Survival Mantras for the resident.
Creators: name: Vadapalli, Ram Mohan
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Anatomy
subject: Musculoskeletal bone
subject: Musculoskeletal spine
subject: Conventional radiography
subject: CT
subject: MR
subject: Diagnostic procedure
subject: Developmental disease
subject: Inflammation

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: 1.To Elucidate Imaging features of Lumbo sacral Transition vertebra(LSTV) and its various sub types and classification. 2.To highlight various morphologicaal and localization mantras for loxcalization of L5. 3.Illustrate the CT and MR Imaging...
Additional file 3 of Efficient gene delivery into the embryonic chicken brain using neuron-specific promoters and in ovo electroporation
Creators: name: Jung, Kyung Min
name: Park, Kyung Je
name: Kim, Young Min
name: Han, Jae Yong
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 3: Fig S2. Gene structure and promoter sequences of chicken CaMII and Nestin. Dark blue bars indicate promoter regions and light blue bars indicate exon regions. Black bars indicate adjacent genes. TSS, transcription start site.
Testing models of vacuum energy interacting with cold dark matter
Creators: name: Li, Yun-He
name: Zhang, Jing-Fei
name: Zhang, Xin
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We test the models of vacuum energy interacting with cold dark matter and try to probe the possible deviation from the $Λ$CDM model using current observations. We focus on two specific models, $Q=3βHρ_Λ$ and $Q=3βHρ_c$. The data combinations come from the Planck 2013 data, the baryon acoustic oscillations measurements, the type-Ia supernovae data, the Hubble constant measurement, the redshift space distortions data and the galaxy weak lensing data. For the $Q=3βHρ_c$ model, we find that it can be tightly constrained by all the data combinations, while for the $Q=3βHρ_Λ$ model, there still exist significant degeneracies between parameters. The tightest constraints for the coupling constant are $β=-0.026^{+0.036}_{-0.053}$ (for $Q=3βHρ_Λ$) and $β=-0.00045\pm0.00069$ (for $Q=3βHρ_c$) at the $1σ$ level. For all the fit results, we find that the null interaction $β=0$ is always consistent with data. Our work completes the discussion on the interacting dark energy model in the recent Planck 2015 papers. Considering this work together with the Planck 2015 results, it is believed that there is no evidence for the models beyond the standard $Λ$CDM model from the point of view of possible interaction.
description: 7 pages, 2 figures; final version published in Physical Review D
Environmental Surface Stability of the MAPbBr(3) Single Crystal
Creators: name: Gao, Y.
name: Huang, J.
name: Ecker, B.R.
name: Wei, H.
name: Wang, C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: Organic–inorganic halide perovskites have emerged as a promising semiconductor family because of their remarkable performance in optoelectronic devices. On the other hand, the stability of perovskites remains a critical issue. In this work, we report a quantitative and systematic investigation of in situ cleaved MAPbBr3 single-crystal degradation processes in X-ray, N2, O2, and H2O environments. The high-quality crystals were monitored by high-resolution X-ray photoelectron spectroscopy with careful control of the exposure time and pressure. The detailed electronic structure and compositional changes of the crystal were tracked throughout the different exposures, and these studies provided insights into the various degradation mechanisms. We identified that ∼10% of the surface MAPbBr3 degraded to metallic lead under X-rays in vacuum, while N2 could protect the sample from the degradation for 9 h under the same condition. Other measurements showed that while the surface was not sensitive to pure O2, it was susceptible to H2O exposure within the top 0.37 nm and a reaction threshold of ∼108 Langmuir was found. Below the threshold, H2O acted only as an n-type dopant; above it, the surface began to decompose. These observations highlight possible future directions to improve the material stability by environmental control.
title: Radiological differences between tuberculous and pyogenic spondylitis
Creators: name: Deresh, Nataliya
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Musculoskeletal spine
subject: CT
subject: MR
subject: Diagnostic procedure
subject: Inflammation
subject: Infection

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Differentiation of tuberculous and pyogenic spondylitis is important, because timely and correctly chosen the type of treatment can reduce the rate of disability and functional impairment. The purpose of our study was to highlight the radiological...
title: Gastric carcinoma with lymphoid stroma: Morphological characteristics on CT and Histopathological findings
Creators: name: Kurokawa, Hiroaki
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Gastrointestinal tract
subject: CT
subject: Staging
subject: Cancer

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Introduction In the diagnosis of gastric cancer, evaluation of local invasion depth of the tumor is important in the strategy of treatment. CT is useful as a method for diagnosis of invasion depth in the diagnosis of gastric cancer (1). In common...
Quantum teleportation of propagating quantum microwaves
Creators: name: Di Candia, R.
name: Fedorov, K. G.
name: Zhong, L.
name: Felicetti, S.
name: Menzel, E. P.
name: Sanz, M.
name: Deppe, F.
name: Marx, A.
name: Gross, R.
name: Solano, E.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Propagating quantum microwaves have been proposed and successfully implemented to generate entanglement, thereby establishing a promising platform for the realisation of a quantum communication channel. However, the implementation of quantum teleportation with photons in the microwave regime is still absent. At the same time, recent developments in the field show that this key protocol could be feasible with current technology, which would pave the way to boost the field of microwave quantum communication. Here, we discuss the feasibility of a possible implementation of microwave quantum teleportation in a realistic scenario with losses. Furthermore, we propose how to implement quantum repeaters in the microwave regime without using photodetection, a key prerequisite to achieve long distance entanglement distribution.
description: 14 pages
Suppressed Ion Migration along the In-Plane Direction in Layered Perovskites
Creators: name: Zheng, X.
name: Fang, Y.
name: Xiao, X.
name: Rudd, P.N.
name: Zeng, X.C.
name: Huang, J.
name: Zhao, J.
name: Dai, J.
name: Tang, S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: Ion migration in a three-dimensional (3D) perovskite is the source of many unique phenomena such as photocurrent hysteresis and a giant switchable photovoltaic effect and can also accelerate the degradation of perovskite-based electronic devices. Here we report the observation of suppressed ion migration along the in-plane direction of layered perovskites by studying the conductivity of layered single-crystal perovskites at varied temperatures. Large-area layered perovskite thin single crystals are synthesized by the space-confined method. The absence of ion migration in these layered perovskites can be explained by an increase in the energy required to form an ion vacancy, compared to 3D perovskites. The suppressed ion migration in layered perovskites indicates that they have intrinsically better stability under an electric field and may contribute to the improved perovskite stability in devices made of layered perovskite through the reduction of ion diffusion-induced perovskite degradation or corrosion of charge transport layers and electrodes.
title: Differential diagnosis of diffuse T2-hypointense infiltrative lesions of the orbit.
Creators: name: Hammachin, Amin
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Diagnostic procedure
subject: MR
subject: Eyes
subject: Tissue characterisation

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: -Review the orbit anatomy -Briefly review the principal entities that manifest as diffuse T2-hypointense orbital infiltration and their radiologic presentation. -Elaborate a differential diagnosis when confronted with a diffuse T2-hypointense...
title: Volume and Mass Doubling Times: The Early Indicators of Growth of Pulmonary Nodules Detected in LDCT Screening Population in Different Risk Status
Creators: name: Sun, Qi
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Screening
subject: CT
subject: Lymph nodes
subject: Cancer

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: To evaluate and compare volume doubling time (VDT) and mass doubling time (MDT) of persistent pulmonary nodules (PNs) detected with low-dose computed tomography (LDCT) in screening population in different risk...
Molecular doping enabled scalable blading of efficient hole-transport-layer-free perovskite solar cells
Creators: name: Gruverman, A.
name: Shao, Y.
name: Liu, Y.
name: Yang, Z.
name: Fang, Y.
name: Li, T.
name: Deng, Y.
name: Lu, H.
name: Wang, Q.
name: Huang, J.
name: Tang, S.
name: Wu, W.-Q.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: The efficiencies of perovskite solar cells (PSCs) are now reaching such consistently high levels that scalable manufacturing at low cost is becoming critical. However, this remains challenging due to the expensive hole-transporting materials usually employed, and difficulties associated with the scalable deposition of other functional layers. By simplifying the device architecture, hole-transport-layer-free PSCs with improved photovoltaic performance are fabricated via a scalable doctor-blading process. Molecular doping of halide perovskite films improved the conductivity of the films and their electronic contact with the conductive substrate, resulting in a reduced series resistance. It facilitates the extraction of photoexcited holes from perovskite directly to the conductive substrate. The bladed hole-transport-layer-free PSCs showed a stabilized power conversion efficiency above 20.0%. This work represents a significant step towards the scalable, cost-effective manufacturing of PSCs with both high performance and simple fabrication processes.
title: Determination of adequate breast tissue visualization using an automated posterior nipple line measure
Creators: name: Hill, Melissa
Publisher: name: European Congress of Radiology
Year: 2017
Subjects: subject: Breast
subject: Mammography
subject: Screening
subject: Quality assurance

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Optimal patient positioning allows for the maximal inclusion of breast tissue seen on a mammogram and even marginal exclusion of tissue can impact the clinical effectiveness of screening mammography (1,2). Because this variability in patient...
Additional file 1 of Somatic copy number alteration and fragmentation analysis in circulating tumor DNA for cancer screening and treatment monitoring in colorectal cancer patients
Creators: name: Hallermayr, Ariane
name: Wohlfrom, Tobias
name: Steinke-Lange, Verena
name: Benet-Pagès, Anna
name: Scharf, Florentine
name: Heitzer, Ellen
name: Mansmann, Ulrich
name: Haberl, Christopher
name: de Wit, Maike
name: Vogelsang, Holger
name: Rentsch, Markus
name: Holinski-Feder, Elke
name: Pickl, Julia M. A.
Publisher: name: figshare
Year: 2022
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 1: Methods and Data including Table S1 and Figures S1–S54. Methods contain more detailed information about the study cohort and methods required to reproduce the experiments. Data contain detailed information on results not shown in the main document and results obtained for each individual patient analyzed for residual disease detection or treatment monitoring.